WO2003058534A1 - Method and system for targeted content distribution using tagged data streams - Google Patents

Method and system for targeted content distribution using tagged data streams Download PDF

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Publication number
WO2003058534A1
WO2003058534A1 PCT/US2002/041774 US0241774W WO03058534A1 WO 2003058534 A1 WO2003058534 A1 WO 2003058534A1 US 0241774 W US0241774 W US 0241774W WO 03058534 A1 WO03058534 A1 WO 03058534A1
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WO
WIPO (PCT)
Prior art keywords
content
user
tag
tagged
module
Prior art date
Application number
PCT/US2002/041774
Other languages
French (fr)
Inventor
William R. Matz
Scott R. Swix
Original Assignee
Bellsouth Intellectual Property Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Bellsouth Intellectual Property Corporation filed Critical Bellsouth Intellectual Property Corporation
Priority to AU2002361906A priority Critical patent/AU2002361906A1/en
Publication of WO2003058534A1 publication Critical patent/WO2003058534A1/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00Commerce
    • G06Q30/02Marketing; Price estimation or determination; Fundraising
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00Commerce
    • G06Q30/02Marketing; Price estimation or determination; Fundraising
    • G06Q30/0241Advertisements
    • G06Q30/0251Targeted advertisements
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00Commerce
    • G06Q30/02Marketing; Price estimation or determination; Fundraising
    • G06Q30/0241Advertisements
    • G06Q30/0251Targeted advertisements
    • G06Q30/0269Targeted advertisements based on user profile or attribute

Definitions

  • the present invention generally relates to networked media delivery systems. More particularly, the present invention relates to a method and system for targeting content to specific users.
  • Computer and television networks have become the predominant communications means by which product vendors communicate information about products to users. Such information may involve advertising, as well as other content such as titles, descriptions, and prices of products such as movies, games, and books for presentation to a user.
  • an on-line mall may provide a list of such content items (e.g., books) that is presented to the user so that the user may select items in the list to purchase.
  • the book titles, authors, and brief descriptions are the content items.
  • Advertisements relate to another type of content that may be transmitted to users.
  • a server device typically transmits the content to a client device where the content is presented to the user. Examples of server devices are the "head-end" of a cable service provider or a server computer on the Internet.
  • the client device may be a television set-top-box (STB) or a client computer.
  • STB television set-top-box
  • targeting advertisements With respect to targeting advertisements, traditional targeting techniques focus on reaching as large an audience as possible; i.e., mass media advertising. This mass media advertising strategy seeks to reach the most number of viewers to increase the odds of contacting the ones most likely to purchase the advertised product or service. Since mass media targeting is expensive, other techniques have been developed in an attempt to not only narrow the audience but also target specific users based on an evaluation of related items. For instance, targeting techniques focus on an analysis of the readers of a particular magazine or viewers of a particular television (TV) program. Then advertisers choose whether or not to advertise in conjunction with the related item; i.e., the magazine or the TV program.
  • TV television
  • More recent methods of targeting content to users have typically involved the server device keeping track of what content a client device uses most and transmitting that type of content to the client device.
  • various mechanisms are used to record the viewing habits of a user at a particular client computer.
  • the content of the pages viewed is typically analyzed by a server computer to determine what topics are of interest to the user.
  • the server places content, such as advertisements or links to other web sites, on the pages viewed by the user based on these particular topics of interest. These advertisements or links are often placed around the primary text or image in a web page and are commonly referred to as "banner ads.”
  • the STB records content that is viewed by the user.
  • the head-end of the cable service provider polls the STB to determine what topics are of interest to the user of the STB. Based on these topics, the head-end transmits related content; e.g., specific advertisements and the like.
  • these methods involve the client device providing the server device with information about the user of the client device. For instance, in the television environment, STBs provide personal user information to the head-end of the cable service provider. Moreover, in order to target the most likely consumer, the server device should be given as much information about the user as possible. Requiring the user's private information to be sent across a network to the server device renders the private information vulnerable to theft and resale to unknown third parties. The moment a user's private information is sent from the client device, how the information is used is essentially out of the user's control. As a result, in typical advertising systems, in order for the user to receive advertisements appropriate for the user, the user must give up some portion of his/her privacy, which is not acceptable to many users.
  • the personal information is gleaned via a two-way data communication method that involves multiple polling events. These polling events consume significant server resources and processing time, as well as bandwidth over the communications network. Consequently, the server interaction with the client in order to provide the user with appropriate content is inefficient.
  • the present invention relates to a system and method of targeting content, such as advertisements and other content items, to particular types of users without the users divulging any private information over a network server system.
  • the system and method involves a server device that tags content based on predetermined criteria and then sends the tagged content to a client device.
  • the client device receives the tagged content and uses the tags to filter the content locally based on a predetermined user profile.
  • the invention relates to a method of targeting content to a user based on a user profile and content tags.
  • Content is delivered to the user's client device.
  • Each content item has a tag identifying a classification of the content.
  • the client device recognizes and evaluates the tags to score each content item based on a local user profile.
  • the content that has a score meeting a predetermined threshold is identified as being appropriate for presentation to the user.
  • Appropriate content may then be selected and presented to the user.
  • the user profile is a set of tags describing the classifications of content that are most appropriate for the user.
  • the profile may be developed based on usage history or demographic information.
  • the client device may also have a tag dictionary that may be updated to correspond to a common set of tags utilized by advertisers and/or server devices.
  • the invention may be implemented as a computer process, a computing system or as an article of manufacture such as a computer program product.
  • the computer program product may be a computer storage medium readable by a computer system and encoding a computer program of instructions for executing a computer process.
  • the computer program product may also be a propagated signal on a carrier readable by a computing system and encoding a computer program of instructions for executing a computer process.
  • Figure 1 is an exemplary operating environment implementing an embodiment of the present invention.
  • Figure 2 is a computer system suitable for implementing an embodiment of the present invention.
  • Figure 3 is module diagram illustrating exemplary software, hardware, or firmware modules running in the computer system of Figure 2.
  • Figure 4 illustrates an exemplary tagged data stream that may be received and processed by the computer system of Figure 2 and modules of Figure 3.
  • Figure 5 illustrates an exemplary portion of tagged content that may be used in an embodiment of the present invention.
  • Figure 6 illustrates another exemplary portion of tagged advertisement content that may be used in an embodiment of the present invention.
  • FIG. 7 is a flow diagram illustrating operations carried out in a targeted content distribution system in accordance with an embodiment of the present invention.
  • Figure 8 illustrates an exemplary user interface that may be presented to a user of a client device in an embodiment of the present invention.
  • Figure 9 is a flow diagram illustrating exemplary operations that may be employed by a profile generator for maintaining a user profile, such as the profile shown in Figure 4.
  • Figure 10 is a flow diagram illustrating exemplary operations that may be implemented by a filtering module, such as the filtering module shown in Figure 4.
  • Figure 11 is a flow diagram illustrating a particular embodiment of correlating, selecting, and notifying operations, such as those shown in Figure 10.
  • Figure 12 is a flow diagram illustrating an exemplary process of scoring or correlating tags in accordance with an embodiment of the present invention.
  • FIG. 1 illustrates an exemplary operating environment 100 employing an embodiment of the present invention.
  • a server device 102 communicates with one or more client devices, such as client device 104 and/or client device 105, via a communication network 106.
  • Server device 102 transmits media content, such as, but not limited to, video, audio, text, or executable programs, over the communication network 106 to be used by the client devices 104 and/or 105.
  • Each of the client devices 104 and/or 105 has an output device, such as a computer monitor 114, or a television screen 116, for presenting user-appropriate media content to the user.
  • the server device 102 has memory 108 that stores media content in the form of data streams 110, 134, and 136.
  • the server device 102 also stores an associated tag, such as tags 112, 130, and 132, with each data stream 110, 134, and 136, respectively.
  • Each of the tags 112, 130, and 132 may be unique from the others and may further be associated with user classifications such as user demographics or usage patterns.
  • the tags are used by client devices 104 and 105 to filter content; i.e., to determine which data stream to provide to users at the client devices, such as 104 and 105.
  • two or more data streams are transmitted with the tags to the client devices.
  • Client devices determine which of the received data streams are appropriate for the user of the client device 104 by analyzing the tag information.
  • the client devices 104 and 105 have access to a user profile, such as user profile 118 and 120 that is further used to analyze the tag information to determine which content should be presented.
  • the client device 104 is a computer system.
  • the communication network 106 may be the Internet communicating Extensible Markup Language (XML) or Hypertext Markup Language (HTML) data to the client device 104.
  • the server device 102 is a web server or an e-commerce application server.
  • the user profile 118 comprises tags corresponding to user preferences for content received from the Internet.
  • the desktop computer client 104 evaluates the tag 112 and the user profile 118 to determine which data stream 110, 134, or 136 is most appropriate for the user.
  • the tag 112 is highly correlated with or matches a tag in the user profile 118, the associated data stream 110 is identified as being appropriate for presentation to the user of the desktop computer client device 104.
  • the client device 105 is a set-top-box (STB).
  • the communication network 106 may be a satellite television broadcast network and the server 102 may be a head-end of a cable service provider.
  • the cable service provider generally broadcasts programming, advertising, "walled garden" merchandising offers, and other content.
  • the media content is broadcasted in the form of data streams 110, 134, and 136 and associated tags 112, 130, and 132 to the STB 105.
  • the STB 105 evaluates the tags 112, 130, and 132 and the STB user profile 120 to determine which of the data streams 110,134, or 136 is most appropriate for the user of the STB 105.
  • the STB 105 presents to the user the data stream(s) that are appropriate to the user based on the user profile 120.
  • Figure 1 depicts two types of client devices 104, a personal desktop computer, and 105, a television set top box (STB), it is to be understood that the client devices 104 and 105 may be any device operable to communicate via the communications network 106, and operable to receive data streams 110 and tags 112.
  • the client device 104 may be a personal digital assistant (PDA), a laptop computer, or a cellular telephone, among others.
  • the communication network 106 may be wireless network, an Ethernet, a local area network (LAN), a wide area network (WAN), or a television broadcast network, among others.
  • FIG. 2 illustrates an exemplary system for implementing the invention with a computing device 200.
  • computing device 200 typically includes at least one processing unit 202 and memory 204.
  • memory 204 may be volatile (such as RAM), non-volatile (such as ROM, flash memory, etc.) or some combination of the two.
  • This most basic configuration is illustrated in Figure 2 by dashed line 206.
  • device 200 may also have additional features/functionality.
  • device 200 may also include additional storage (removable and/or non-removable) including, but not limited to, magnetic or optical disks or tape. Such additional storage is illustrated in Figure 2 by removable storage 208 and non-removable storage 210.
  • Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.
  • the memory 204, removable storage 208 and non-removable storage 210 are all examples of computer storage media.
  • Computer storage media includes, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable ROM (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by device 200. Any such computer storage media may be part of device 200.
  • Device 200 may also contain communications connection(s) 212 that allow the device to communicate with other devices.
  • Communications connection(s) 212 is an example of communication media.
  • Communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
  • modulated data signal means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal.
  • communication media includes any information delivery media.
  • modulated data signal means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal.
  • communication media includes wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, radio frequency (RF), infrared and other wireless media.
  • wireless media such as acoustic, radio frequency (RF), infrared and other wireless media.
  • RF radio frequency
  • computer readable media includes both storage media and communication media.
  • Device 200 may also have input device(s) 214 such as keyboard, mouse, pen, voice input device, touch input device, remote control unit, etc.
  • input device(s) 214 such as keyboard, mouse, pen, voice input device, touch input device, remote control unit, etc.
  • 216 such as a display, speakers, printer, etc. may also be included. All these devices are well known in the art and need not be discussed at length here.
  • the computing device 200 is the set-top box 105.
  • the set-top box 105 provides a control interface through which a subscriber makes viewing selections by, e.g., using a remote control unit, a keyboard, or a control panel.
  • the set-top box 105 performs the following functions: (1) routes traditional broadcast signals to the connected viewing device; (2) converts media content to a selected video format (e.g., NTSC or PAL) and presents the content to the subscriber; (3) for interactive systems, exchanges messages (including display data) with the server device 102 over distribution network 106; (4) receives messages from a subscriber input device, such as a remote control unit; (5) translates video signals from a network-native format into a format that can be used by the viewing device; (6) inserts alphanumeric or graphical information (e.g., program guides, menus, etc.) into the video stream to overlay that information on the video image; and (7) provides graphic or audio feedback to the subscriber.
  • Examples of commercially available set-top boxes 105 that satisfy these functions include an SA Explorer 2000 set-top box by Scientific Atlanta, a DCT-5000 set-top box by Motorola/General Instruments, and a Z12C set-top box by Zenith.
  • FIG. 3 is a functional block diagram of a client-server system 300 employing an embodiment of the present invention.
  • the client-server system 300 provides targeted content to users of the system 300.
  • the content may include advertising and non-advertising content, including, but not limited to, news, games, programming, books, and sports.
  • a server 302 transmits media content to a client 304.
  • Media content sent by the server 302 is in a tagged data stream format.
  • Data streams at the server 302 are tagged with tags corresponding to classifications of users. Classifications include, but are not limited to, demographics, such as viewing preferences, age, gender, location, and income.
  • the tags allow the client device 304 to select among all data received by the client device so that the most appropriate content is provided to the user of the client device 304.
  • the server device 302 includes a retrieving module 306, a receive module 308, and a send module 310.
  • the receive module 308 receives requests from the client.
  • An example of a request from the client 304 is a Hypertext Transport Protocol Request for an Internet page in on the server 302.
  • the server 302 uses a send module 310 to send multiple, tagged data streams of content to the client 304.
  • the available tagged content is retrieved from a tagged data memory 307 by the retrieving module 306.
  • the tagged data memory 307 contains tagged content items.
  • Tagged content items are generally data streams with tags describing predetermined classifications such as demographics categories associated with the data streams.
  • the server device 302 may obtain the tagged content items from content providers (e.g., advertisers) that tag the content based on the type of user targeted by the content providers or the server may tag the items itself.
  • the send module 310 receives the tagged content items from the retrieving module 306 and transmits the tagged content items to the client 304.
  • the server device 302 does not have a receive module 308, for instance, in some cases, the server device 302 primarily broadcasts content onto a broadcast network (e.g., satellite TV).
  • a broadcast network e.g., satellite TV.
  • an STB broadcast network
  • the send module of the client device 302 is not necessary in the broadcast TV/STB implementation.
  • the STB 105 simply receives multiple, tagged data streams of content sent by the server device 302 and filters the content locally.
  • the client device 304 includes a receive module 312, which receives the transmitted tagged data streams from the server device 302.
  • the receive module 312 performs all tasks associated with receiving data from the server 302, including detecting incoming data, and synchronizing to receive the data.
  • the receive module 312 sends the tagged data to a storage module 314, which stores the received tagged data in a tagged data memory 316.
  • the storage module 314 may store the tagged data in any arrangement in the tagged data memory 316 that is suitable for the particular implementation. For example, the storage module 314 may group certain types of content together. The storage module 314 may group advertising content together, games content together, movies content together, etc. Preferably, the tagged data will be organized in the tagged data memory 316 in a way to facilitate quick and efficient access but such organization is not necessary. The storage module 314 may also pass certain content straight through, without storage, to a user input/output module 318.
  • the user input/output module 318 performs tasks associated with conducting media content to an output device such as a display monitor, speakers, or a printer.
  • the user input/output module 318 also performs tasks associated with receiving input from a user, such as mouse clicks, keyboard entry, or remote control entry. While a user inputs data, the user input/output module 318 detects the user input and may transmit the user input to an analysis module 320 for analysis.
  • the analysis module 320 evaluates user input to detect patterns in the user input. Based on the detected usage patterns, the analysis module 320 updates a user profile 322.
  • the analysis module 320 also detects events that prompt output of media content. Events that prompt output of media content are generally referred to as insertion events.
  • the analysis module 320 may receive these events from the storage module 314 or the user input/output module 320.
  • An event from the storage module 314 may be an advertisement insertion event, which indicates that an ad should be displayed to the user at a predetermined time.
  • An advertisement insertion event is a cue tone contained within the network TV broadcast, which may be transmitted along with other media content from the server 302.
  • insertion events that are received from the server 302 may be referred to as external or predetermined events because they arise externally from the client and indicate a predetermined time for display.
  • Another type of insertion event that the analysis module 320 may detect is an internal event that arises on the client side.
  • An internal insertion event is a user initiated menu selection from a STB navigator, such as the user requesting a list of available television shows, a list of games that are available to play online or the books available via the online bookstore.
  • Each list of respective items offered may be tagged by the server system and filtered by the client device so as to optimize the presentation order to the user that would present the item with the highest probability of interest.
  • the initial navigator menu presented on the display may be customized automatically by the client device based upon prior user behavior and profile so as to order the list of available activities or actions (e.g., preferences for television program, games, shopping, news, mail, etc), thereby presenting the user with a list best matching their probable activities.
  • prior user behavior can be implemented by the client device to exhibit content in a predetermined sequence (e.g., preferred content type displayed first upon user initiation of the device).
  • the user when a user turns on the user's television set and STB, the user immediately is presented with content, advertising, programming, etc which matches the user's profile.
  • the user may then select a list of options of a certain type of media content. For example, the user may select that a list of games be shown from which the user can choose.
  • the analysis module 320 would detect the user's selection of a list of games as an insertion event. A menu of a list of games may then be displayed so the user may select the game that he/she wants to play.
  • the analysis module 320 again will receive an insertion event to insert the selected game into the output module.
  • the analysis module 320 upon receiving an insertion event, accesses the storage module 314 to identify the most appropriate media content that should be displayed to the user.
  • the storage module 314 transmits tagged data to the analysis module 320, which filters the tagged data using tag information stored in the user profile 322.
  • the analysis module 320 determines which tagged data in the tagged data memory 316 most closely matches tags or tag information in the user profile 322.
  • the tagged data that most closely matches the information in the profile 322 is transmitted to the user input/output module 318 for presentation to the user.
  • the content that is presented to the user is the content from the server 302 that most closely matches the user profile 322, and is thereby the most appropriate for the user's preferences.
  • the selection of the most appropriate media content to present to the user is made without transmitting to the server device 302 any or substantially little private user information.
  • the media content can be targeted to a user without the user giving up his or her privacy.
  • the client device 304 has a send module 324 for sending data, such as requests, to the server device 302.
  • An example of this embodiment is a client computer communicating to a server computer over the Internet, wherein the client computer sends Hypertext Transport Protocol (HTTP) requests to the server computer to browse web pages.
  • HTTP Hypertext Transport Protocol
  • the client device 304 need not have a send module 324.
  • an example of this embodiment is a STB 105 receiving content from a broadcast TV network.
  • the STB 105 does not send requests for data.
  • the server device 302 e.g., head-end of a cable service provider
  • the server device 302 is constantly broadcasting content on a number of channels that the STB 105 can switch to.
  • the STB 105 employs modules such as those depicted in Figure 3 to complete many intelligent functions, including the collection, storage, exchange, and display of data.
  • the STB 105 has a navigator, an operating system, and a memory buffer.
  • the operating system is a computer program that, after being initially loaded into the STB 105 by a bootstrap program, manages the other programs, or applications, running on the STB 105.
  • the navigator is a software application running on top of the operating system.
  • the navigator is provided by the user I/O module 318 and generates menu screens and accepts viewer menu selections such as movie orders, preview orders, or requests to enter an interactive "walled-garden" environment that may supply news, offer products, etc. Based on these selections, the navigator directs the storage module 314 to deliver the selected program, e.g., the storage module 314 plays the selected movie. In addition, the navigator records viewer selections or event data in memory, such as memory 204. As is discussed below, the recorded viewer selections or event data may be analyzed by the analysis module 320 to detect usage patterns.
  • FIG 4 is a more detailed functional block diagram of an analysis module such as the analysis module 320 in accordance with aspects of a particular embodiment of the invention.
  • the analysis module 320 includes a content insertion engine 402, a filtering module 404, and a profile generator 406.
  • the content insertion engine 402 receives data from the storage module 314 and the user I/O module 318, and determines whether an insertion event occurs.
  • the insertion event may be a network cue-tone. If an insertion event does occur, the content insertion engine 402 transmits an insert command to the filtering module 404 to indicate that media content is to be inserted (i.e., presented to the user).
  • the filtering module 404 accesses tagged data from the storage module 314 and tags from the profile 322 to filter out inappropriate media content stored in the tagged data memory 316.
  • the filtering module 404 determines which data in the tagged data memory 316 is appropriate for presentation to the user based upon the tagged data's level of similarity to the tags in the profile 322. Determining the tagged data's level of similarity may be done by scoring each of the tags stored in the tagged data memory 316. As is discussed below in more detail, scoring the tags in the tagged data memory may involve determining the tags' relative correlation to the tags in the user profile 322.
  • the filtering module 404 transmits a command to the user I/O module 318 to output the appropriate media content.
  • the filtering module 404 may send a message to either the user I/O module 318 to get the appropriate content from the storage module 314. Alternatively, the filtering module 404 may transmit a message to the storage module 314 to instruct the storage module 314 to transmit the appropriate content to the user I/O module 318.
  • the profile generator 406 receives data from the user i/o module 318 and updates the profile 322 according to inputs from the user.
  • the profile generator 406 dynamically updates the profile 322 based on a history of user inputs so that when the filtering module 404 accesses the profile 322, the filtering module 404 will filter the tagged data memory 316 based on the most recent user preferences indicated by the profile 322.
  • profiles are static, and/or predetermined.
  • the information is not organized.
  • the profile generator 406 preferably organizes tags in the profile 322 for fast and efficient access.
  • the user profile 322 is preferably stored in memory accessible by one or more microprocessors of the client device 304.
  • the memory that stores the user profile 322 can be any memory medium known in the art, including, but not limited to, Personal Computer Memory Card International Association (PCMCIA) memory, Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable ROM (EEPROM), or hard disc drive memory.
  • PCMCIA Personal Computer Memory Card International Association
  • RAM Random Access Memory
  • ROM Read Only Memory
  • EEPROM Electrically Erasable Programmable ROM
  • the user profile 322 need not be stored contiguously in memory and may be separated in a memory medium accessible through a file system that maps memory locations to data.
  • one or more of the modules shown in Figures 3-4 may be integrated on a single integrated circuit in any combination. Alternatively, they may be separately implemented in software or hardware.
  • FIG. 5 illustrates a portion of tagged content 500 that may be used in an embodiment of the present invention.
  • the portion of tagged content 500 includes tag/content pairs such as pair 504 including a tag, such as tag 506, and associated content, such as content 508.
  • the content may be any type of content, including, but not limited to, advertisements, and content items containing descriptions (e.g., title, author, price, theme, etc) of content such as books, movies, games, etc.
  • Each tag describes its associated content with predefined information.
  • the tags 506, 510, and 514 have a type identifier 516, a title identifier 518, an age identifier 520, a gender identifier 522, an income identifier 524, a location identifier 526, and a family identifier 528.
  • the identifiers relate to 518, 520, 522, 524, 526 and 528 what type of viewer the content is appropriate for.
  • the tag 510 indicates that the content 512 associated with the tag 510 is an advertisement about Budweiser ® beer.
  • the tag 510 further indicates that the content 512 is targeted for males from the ages 21-55.
  • the tag 510 indicates that the viewer who is targeted may be in any income level, at any location, and have any family characteristics (e.g., kids, married, etc.).
  • the tags 506, 510, and 514, are appended to the content 508, 512, and 515, respectively by the server 302.
  • the client 304 uses the tags to determine whether the content 508, 512, and 515 is appropriate for the user at the client device 304.
  • the client 304 and server 302 utilize a common tag format.
  • providers of content to the server device 304 tag the content before making it available to the server 304.
  • the content providers fill in the identifiers, such as type, title, age, gender, income, location, and family, with the identifying data that the provider determines is the best target audience.
  • the server device 302 appends the tags to the content.
  • the server device 302 is operable to determine what identifying information is most appropriate to the content and fill in each of the identifiers accordingly.
  • the server device 302 has a dictionary of identifiers (e.g., type, title, age, gender, etc.) to select from.
  • the tags that the client device 304 uses in the user profile 322 have the identifiers (e.g., type, title, age, gender, etc) selected from a common set of identifiers.
  • the client device 304 and the server device 302 utilize a common tag format having common identifiers.
  • identifiers may change. For example, another identifier, such as "Education Level", may be added to the tag format.
  • the switch to the new tag format at the server device 302 is preferably synchronized with the switch to the new tag format at the client device 304.
  • Figure 5 illustrates exemplary identifiers in an exemplary format, it is to be understood that any identifiers may be used that effectively target users. It is envisioned, for example, that the "type” identifier may have "subtypes.” This may occur when the type is "movie.” A subtype further classifies the movie into genres such as, but not limited to, westerns, comedy, horror, drama, action, etc.
  • tags may include a weight value associated with each identifier, indicating the relative importance of that identifier to the targeting of the content to users.
  • Figure 6 illustrates another exemplary portion of tagged advertisement content that may be used in an embodiment of the present invention.
  • Three advertisements 608, 612, and 615 are shown with associated tags 606, 610, and 614, respectively.
  • Advertisement 608 is identified by its associated tag 606 to be an advertisement for Clinique ® products and is directed to females of a middle income and from ages 21-50.
  • Advertisement 612 is identified by its associated tag 610 as being an advertisement for Budweiser products and is directed to males of from ages 21-55, of any income, location, or family arrangement.
  • the advertisement 615 is identified by its associated tag 614 as being an advertisement for Blue's Clues ® program for children ages 2-7, and a family arrangement with kids.
  • the logical operations of the client device 304 and the server device 302 may be implemented as a sequence of computer implemented steps or program modules running on a microprocessor, such as, without limitation, a processor in a personal computer or a computer workstation. It will be understood to those skilled in the art that the client device 304 and the server device 302 of the present invention may also be implemented as interconnected machine logic circuits or circuit modules within a computing system. The implementation is a matter of choice dependent on the performance requirements of the computing system implementing the client device 304 and the server device 302.
  • the client device 304 and the server device 302 may be implemented as software modules executed by one or more general purpose computers, such as the general purpose computer 200 illustrated in Figure 2. As described in greater detail below, the client device 304 may be employed to receive, store, filter, and present media content, such as movies, games, and/or advertisements. The client device 304 employs computer-readable media for carrying out the various tasks associated with targeting content to the user of the client device 304.
  • FIG. 7 is a chart illustrating operations carried out in a targeted content distribution system in accordance with an embodiment of the present invention.
  • a tagging operation 704 tags content items that will be transmitted to the user of the client device 304.
  • the server device 302 may perform the tagging operation.
  • an advertiser that provides content to the server device 302 may perform the tagging operation 302.
  • the tagging operation 704 involves associating tags describing relevant classifications with content items.
  • a tag includes identifier information for various classifications, such as demographics.
  • the tagging operation 704 may involve assigning weighting values to tag identifiers, which indicate a relative importance of each identifier.
  • a tag for a beer ad may include age identification information of 21-55, with a relative weight of 1, and an income identification range of $30,000 - $ 100,000, with a relative weight of .5.
  • the tag indicates that targeting users in the identified income range is of less importance than targeting users in the identified age range.
  • an establishing operation 708 establishes a communication connection between a client device 304 and a server device 302.
  • Establishing a communication connection may be carried out using any means known in the art.
  • a client computer typically send a request (e.g., a Hypertext Transport Protocol request) to a server computer to request a particular web page identified by a Universal Resource Locator (URL).
  • a request e.g., a Hypertext Transport Protocol request
  • URL Universal Resource Locator
  • a connection may be established in a cable television environment by a set-top-box switching to a channel or transport frequency.
  • Many other methods of establishing a communication connection are known in the art and will fall within the scope of the establishing operation 708.
  • the server device 302 then sends data to the client device 304 in a sending operation 712.
  • the data includes more than one of the tagged content items that were tagged in the tagging operation 704.
  • the server may send content items using any transmission protocol known in the art, including, but not limited to, a proprietary protocol.
  • Sending the tagged content may include encoding the tagged content items, packetizing and/or formatting the encoded tagged content items, and modulating a carrier frequency with the packetized data.
  • Sending the tagged content may include encoding the tagged content items, packetizing and/or formatting the encoded tagged content items, and modulating a carrier frequency with the packetized data.
  • the server may also append a unique client device identifier to the tagged content data such that a particular client device 304 is associated with the tagged content items.
  • the client computer typically has a unique Internet Protocol (LP) address.
  • LP Internet Protocol
  • each STB has a unique identifier.
  • each client device 304 may be uniquely identified on the network so that the server device 302 may send tagged content items directly to each client device in the sending operation 712.
  • the tagged content items that are sent in the sending operation 712 may be any content, including advertising.
  • the server device 302 may send the content items in any order applicable to the implementation. For example, in one implementation it may be most efficient for the server device 302 to send all advertisements in a group; i.e., sequentially, and then all video content items sequentially, followed by all book content items sequentially, and so on.
  • the client device 304 receives the tagged content items that were sent in the sending operation 712.
  • the client device 304 is detecting data on the communication network 106.
  • the client device 304 detects tagged content items that are directed at the client device 304, demodulate, and decode packetized or formatted tagged content items.
  • the receiving operation 716 may involve synchronizing to a data signal from the server device 302.
  • the client device 304 may present one or more of the tagged content items to the user.
  • the client device 304 may also cache the tagged content items in a caching operation 720.
  • the tagged content items are stored in memory that is accessible by the client device 304 for possible later presentation to the user.
  • the tagged content items may be logically stored in memory in any arrangement in the caching operation 720.
  • the caching operation 720 may involve logically storing the tagged content items contiguously in memory as they are received.
  • the caching operation 720 may logically group certain types of content (e.g., video content) together in memory.
  • the content items are arranged logically in memory, it is to be understood that the physical locations in the memory may not follow the logical arrangement.
  • the client device 304 may recognize an indication to insert one or more content items from the cache in a recognizing operation 724. Inserting a content item generally refers to presenting the content item to the user. The manner in which the content item is presented to the user is generally related either spatially (e.g., on a display monitor) or temporally (e.g., synchronized in time) to other content that is sent to the client device 304.
  • the client device 304 may receive a cue tone from the head-end, which indicates that an advertisement is to be displayed at a designated time.
  • the client device 304 may receive input from the user to display a menu of content items (e.g., games).
  • the input from the user is an indication to insert one or more content items (e.g., game content items) in a menu to the user.
  • the client device 304 After the client device 304 recognizes an indication to insert content, the client device 304 performs a selecting operation 728.
  • the selecting operation 728 the client device 304 evaluates the tags that were stored in the caching operation 720 based on a user profile (e.g., user profile 322), to determine whether one or more of the stored content items is appropriate for presentation to the user. Any method of evaluation may be employed by the client device 304 in the selecting operation 728 to select one or more appropriate content items.
  • a default content item may be presented.
  • An exemplary method of evaluation is discussed in detail below in reference to Figures 10-12.
  • the client device 304 presents to the user the one or more content items that were identified as appropriate in the selecting operation 728.
  • Figure 8 illustrates an exemplary user interface 800 that may be presented to a user of a client device 304 in an embodiment of the present invention.
  • the user interface 800 includes two menus presented to the user allowing the user to make selections.
  • a content type menu 804 presents the user with four types of content from which to choose: movie content 806, games content 808, books content 810, and children's programming content 812.
  • the user may select any of the items listed in the content type menu 804 to obtain a list of content items of the selected content type. As illustrated, the user chooses 816 the games content 808.
  • a games menu 818 is displayed with a list of five available and appropriate games: "Warlords” 820, "BattleZone” 822, “BMX Rally” 824, "Indy Racer” 826, and "Madden NFL” 828.
  • the user may then select one of the games listed on the games menu 818 to get more information about a particular game.
  • Most relevant to the present invention is the process that occurs when the user chooses, at choose operation, 816 one of the games content item 808.
  • a content insertion event arises from the user I/O module 318.
  • the user I/O module 318 sends a message to the content insertion module 402 ( Figure 4)indicating that a list of appropriate games is to be presented to the user. Additionally, the list of games will preferably be sorted in order of user preference.
  • the content insertion engine 402 responds by sending a message to the filtering module 404 notifying the filtering module 404 to filter games content items and provide the most appropriate or preferred game. In one embodiment, the content insertion engine 402 employs the filtering module 404 five times to obtain the five most appropriate game content items available in the tagged data memory 316. The content insertion engine 402 then sends the list of five game content items to the user I/O module 318 for presentation to the user on the games content menu 818.
  • a user profile 322 is established for targeting purposes.
  • Figure 9 describes one exemplary process for establishing the user profile 322.
  • content may be targeted to all users, or all users in a particular category. This is particularly relevant to broadcast TV in which the head-end of the cable service provider may send content to everyone within a particular zip code.
  • Figure 9 is a flow diagram 900 illustrating exemplary steps or operations that may be employed by the profile generator 406 for generating and updating the profile 322 to correspond to user preferences.
  • the user upon initial power-up may be prompted to fill out a survey to provide information about the user to the client device 304.
  • a querying operation 902 it is determined whether a survey mode has been entered.
  • the survey mode may be entered any number of ways, including a determination that a survey has not yet been filled out, or the user manually selecting a survey mode. If it is determined in the querying operation 902 that the survey mode has been entered, an administering operation 904 administers a survey to the user. During the administering operation 904, the user enters demographic or other data that correspond to the user and his/her preferences for content. Importantly, the data entered by the user in the survey is not released from the client device 304. Rather, the client device 304 uses the survey data to maintain the user profile 322 to provide future content to the user.
  • a building operation 906 uses the demographic data entered during the administering operation 904, a building operation 906 generates tags corresponding to the user's selections in the administering operation 904. As discussed above, the tags have identifier information. The identifier information generated in the building operation 906 associates the user's survey data with categories of common identifiers discussed in Figure 5. An updating operation 908, updates the profile 322 with tags that were generated in the building operation 906.
  • query operation 910 determines whether a manual tag input mode has been entered. Querying operation 910, determines whether the user has selected an option for manually entering specific tags associated with media content that the user prefers (or does not prefer) to be presented. If it is determined in the querying operation 910 that a manual tag input mode has been entered, flow branches YES to presenting operation 912 which presents tag options to the user that the user may select.
  • the presenting operation 912 may present tags that have been previously compiled based on tags received from the server device 302, or the presenting operation 912 may access a directory of tags that is periodically updated in the client device 304.
  • the updating operation 908 updates the user profile 322 with the tags selected by the user in the presenting operation 912. If, in the querying operation 910, it is determined that the manual tag input mode has not been entered, flow branches NO to detect operation 914 which begins to detect user selections.
  • the detecting operation 914 may detect any selections, such as, but not limited to, mouse clicks, keyboard entry, or remote control data entry.
  • the detecting operation 914 may record the user selections along with other related information such as time of entry, or duration of viewing particular content. For example, in a set-top box implementation, the detecting operation 914 may detect a user selecting a Home Box Office ® (HBO ® ) movie "Band of Brothers" ® .
  • HBO ® Home Box Office ®
  • the detecting operation 914 records when the user begins watching "Band of Brothers” ® as well as when the user changes the channel to another channel, such as a football game on CBS ® .
  • the collection, over time, of viewing patterns and preferences builds a user profile indicating the relative interest in different genres of content programming, such as sports, movies, dramas, education, children, etc. Multiple levels of detail (e.g., subtypes) can be derived, such as specific types of sports.
  • a storing operation stores a tag associated with the user selection.
  • all media content, including programming, from the server device 302 includes a tag descriptive of the type of content.
  • the tag may be stored for analysis, such as determining a pattern in the user's selections.
  • the user profile 322 is then updated in an updating operation 918.
  • the updating operation 918 involves storing the tags of most viewed content in the user profile 322, preferably in such a way that the tags are quickly accessible.
  • operation loops back to the detecting operation 914 wherein subsequent user selections are detected.
  • the detecting operation 914, the storing operation 916, and the updating operation 918 may be iterated indefinitely until the user turns off the client device 304.
  • FIG 10 is a flow diagram 1000 illustrating exemplary steps or operations that may be implemented by the filtering module 404 to filter out media content received from the server device 302 that is less preferred by the user.
  • a receiving operation 1002 receives a command to insert media content from the content insertion engine 402.
  • a correlating operation 1004 then correlates tags in the user profile 322 with tags from the storage module 314 to determine which tagged data from the storage module is most preferred by the user. In the correlating operation 1004 it is determined whether tags in the storage module 314 are similar to tags in the user profile 322. In one embodiment, the correlating operation 1004 may determine a level of correlation or matching for each data stream in the storage module 314.
  • the correlating operation 1004 may determine that two tags sufficiently match if at least three identifiers in the tags are the same, even if some other identifiers are different between the tags. If the level of matching is above a predetermined threshold, the data stream may be presented to the user. A selecting operation 1006 then selects the media content that most closely matches the user profile 322. If the insertion command received in the receiving operation 1002 is an ad insertion command, the selecting operation 1006 preferably selects one advertisement from the storage module to be presented to the user. If more than one advertisement sufficiently matches a tag in the user profile 322, the selecting operation 1006 may select an advertisement that has not been presented to the user recently. In a notifying operation 1008 the user I/O module 318 is notified of the media content to be presented to the user that was selected in the selecting operation 1006.
  • FIG 11 illustrates a detailed embodiment of the correlating, selecting, and notifying operations 1004, 1006, and 1008.
  • the analysis module 320 searches the content in the tagged data memory 316 to determine if content is available that is appropriate for the user of the client device 304.
  • the filter module 404 retrieves a tag from the storage module 314.
  • the storage module 314 reads a tag out of the tagged data memory 316 and keeps track of the order of dispensing tags to the filter module 404.
  • the filter module 404 retrieves a tag out of the user profile 322 in another retrieving operation 1108.
  • the filter module 404 compares the tag from the storage module 314 to the tag from the user profile 322 to determine if the two tags meet a predetermined correlation threshold. Comparing the two tags may be accomplished using any method known in the art and depends on how the tags are encoded in the particular implementation. For example, identifiers in the tags may be encoded as single bits (either on or off). In this example, the comparing operation 1110 may perform a bit-masking operation, which is a computationally efficient way of comparing bits. If it is determined that the two tags retrieved in operations 1104 and 1108 meet the predetermined correlation threshold, the filter module 404 selects the tag retrieved from the storage module 314 in a selecting operation 1114.
  • the filter module requests the content associated with the selected tag from the storage module 314 and delivers the content to the user I/O module 318.
  • the filter module 404 determines whether anymore tags exist in the user profile. In a determining operation 1118, the filter module 404 reads the user profile 322 to determine if another tag is available for comparison. If so, the filter module 404 retrieves the next tag from the user profile 322 in a retrieving operation 1122. After the next tag is retrieved from the user profile 322, the comparing operation 1110 compares the next user profile tag with the tag retrieved from the storage module 314. If, on the other hand, it is determined that no other tags are in the user profile
  • the determining operation 1126 determines whether another tag exists in the tagged data memory 316 for comparison.
  • the filter module 404 may request another tag from the storage module 314. If no more tags are in the tagged data memory 316, the storage module 314 sends back an error message to the filter module 404. If the storage module 314 identifies another tag in tagged data memory 316, the storage module 314 sends the tag to the filter module 404.
  • the filter module 404 thereby retrieves the next tag in a retrieving operation 1130. After the next tag is retrieved from the storage module 314, operation returns to the retrieving operation 1108 wherein the first tag in the user profile is again retrieved, and the sequence of comparison and retrieval begins again.
  • the correlating operation 1004 ends. If the correlating operation 1004 ends without any tags in the tagged data memory 316 meeting the correlation threshold, an error message may be sent to the user I/O module 318.
  • the user I/O module 318 can either display a message that content is not available, or the user I/O module 318 can display predetermined default content.
  • Figure 12 is a flow diagram illustrating an exemplary operations that may be employed in the comparing operation 1110 of Figure 11.
  • Input to the operation is a tag from the tagged content memory 316 and a tag from the user profile 322.
  • the operational flow of Figure 12 iterates through identifiers in the tag from the tagged data memory 316 and associated identifiers in the tag from the user profile 322, determining if the identifying data for the tags matches. After all the identifiers are iterated through, a score is generated that may be used to filter the tag and/or rank the tag in terms of user preference and/or filter the content.
  • a weighted average value is set equal to zero.
  • the weighted average value is used to keep track of the score associated with the tag.
  • an identifier e.g., type identifier 516 of Figure 5
  • its identifying data e.g., "Game”
  • an associated type identifier and its identifying data are retrieved from the user profile tag.
  • a comparing operation 1210 it is determined whether the identifying data for the two associated identifiers match. For example, if the type identifying data is "Game" in both the tags, the identifiers match.
  • a scoring operation 1214 accumulates a running score associated with the tag from the tagged data memory 316.
  • the scoring operation 1214 involves calculating a weighted average of the identifiers. If, in the comparing operation 1210, the identifier data of the tagged data memory tag does not match that of the user profile tag, and after the scoring operation 1214, a determining operation 1226 determines if another identifier remains in the tags to be compared.
  • the retrieving operation 1204 retrieves the identifier and its identifying data from the tagged data memory tag. Processing continues as before to compare the corresponding identifier data of the user profile tag. If no more identifiers remain to be processed in the determining operation 1226, another determining operation 1230 determines if the score computed in the scoring operation 1214 is above a predetermined threshold value. If the score is not above the predete ⁇ nined threshold value, a return no operation 1234 returns an indicator that the tag from the tagged data memory 316 is not sufficiently correlated to the user profile tag.
  • another determining operation 1230 determines if the score computed in the scoring operation 1214 is above a predetermined threshold value. If the score is not above the predete ⁇ nined threshold value, a return no operation 1234 returns an indicator that the tag from the tagged data memory 316 is not sufficiently correlated to the user profile tag.
  • a return yes operation 1238 returns an indication that the tag from the tagged data memory 316 is sufficiently correlated to the user profile tag.
  • the score may be returned along with the indicator. The score may be used by the calling module to sort tagged data memory tags according to preference.
  • the method steps illustrated in Figures. 7-12 may be implemented in firm ware in the disc drive or in a computer connected to a disc drive. Additionally, the logical operations of the various embodiments of the present invention are implemented (1) as a sequence of computer implemented acts or program modules running on a computing system and/or (2) as interconnected machine logic circuits or circuit modules within the computing system. The implementation is a matter of choice dependent on the performance requirements of the computing system implementing the invention. Accordingly, the logical operations making up the embodiments of the present invention described herein are referred to variously as operations, structural devices, acts or modules. It will be recognized by one skilled in the art that these operations, structural devices, acts and modules may be implemented in software, in firmware, in special purpose digital logic, and any combination thereof without deviating from the spirit and scope of the present invention as recited within the claims attached hereto.

Abstract

A method for targeting content (108) to a user (104, 116) based on a user profile (118, 120) and content tags(112, 130, 132). All content (108) is delivered to the user's computer system (104, 116). Each unit of content (110, 134, 136) has a tag (112, 130, 132) uniquely identifying a classification of the content. The receiving computer (104, 116) recognizes and evaluates the tags to match the content with a local user profile (118, 120). The matching content is selected from all the content and displayed. The user profile (118, 120) is a set of data describing the classifications of content that are most appropriate for the user. The profile (118, 120) can be developed based on usage history or demographic information. The user computer system has a tag dictionary that may be updated to correspond to a set of tags utilized by content delivery systems.

Description

METHOD AND SYSTEM FOR TARGETED CONTENT DISTRIBUTION USING TAGGED DATA STREAMS
This application is being filed as a PCT International Patent application in the name of BellSouth Intellectual Property Corporation, a U.S. national corporation, applicant for the designation of all countries except the US, and William R. Matz and Scott R. Swix, both citizens of the U.S., applicants for the designation of the US only.
FIELD OF THE INVENTION
The present invention generally relates to networked media delivery systems. More particularly, the present invention relates to a method and system for targeting content to specific users.
BACKGROUND OF THE INVENTION
Computer and television networks have become the predominant communications means by which product vendors communicate information about products to users. Such information may involve advertising, as well as other content such as titles, descriptions, and prices of products such as movies, games, and books for presentation to a user. For example, an on-line mall may provide a list of such content items (e.g., books) that is presented to the user so that the user may select items in the list to purchase. In this case, the book titles, authors, and brief descriptions are the content items. Advertisements relate to another type of content that may be transmitted to users. A server device typically transmits the content to a client device where the content is presented to the user. Examples of server devices are the "head-end" of a cable service provider or a server computer on the Internet. The client device may be a television set-top-box (STB) or a client computer. Regardless of the particular communications environment, a primary goal of product vendors in providing content to users is to reach or target those users who are most likely to purchase the products.
With respect to targeting advertisements, traditional targeting techniques focus on reaching as large an audience as possible; i.e., mass media advertising. This mass media advertising strategy seeks to reach the most number of viewers to increase the odds of contacting the ones most likely to purchase the advertised product or service. Since mass media targeting is expensive, other techniques have been developed in an attempt to not only narrow the audience but also target specific users based on an evaluation of related items. For instance, targeting techniques focus on an analysis of the readers of a particular magazine or viewers of a particular television (TV) program. Then advertisers choose whether or not to advertise in conjunction with the related item; i.e., the magazine or the TV program. Inherent in these traditional content distribution techniques are the problems of overinclusion (targeting viewers who have no desire to purchase the product or service) and underinclusion (excluding potential consumers). Because these techniques assess consumer interest on the larger scale of program audiences instead of on an individual viewer basis, the techniques will always suffer from the squandered advertising dollars associated with overinclusion and underinclusion.
Additionally, traditional targeting techniques leave consumers inadequately informed about products that they might want to purchase. Because of overinclusion, consumers are inundated with advertisements for unwanted products. Due to the inundation, the consumers may miss advertisements for products they actually might want. Similarly, as a result of underinclusion, consumers are simply not informed about products they might want. Thus, overinclusion and underinclusion result in consumers' wasted time and energy in becoming informed about products they are not interested in.
More recent methods of targeting content to users have typically involved the server device keeping track of what content a client device uses most and transmitting that type of content to the client device. For example, on the Internet, various mechanisms are used to record the viewing habits of a user at a particular client computer. The content of the pages viewed is typically analyzed by a server computer to determine what topics are of interest to the user. The server places content, such as advertisements or links to other web sites, on the pages viewed by the user based on these particular topics of interest. These advertisements or links are often placed around the primary text or image in a web page and are commonly referred to as "banner ads." As another example, in a cable television network using a STB, the STB records content that is viewed by the user. Later, the head-end of the cable service provider polls the STB to determine what topics are of interest to the user of the STB. Based on these topics, the head-end transmits related content; e.g., specific advertisements and the like.
Unfortunately, these methods involve the client device providing the server device with information about the user of the client device. For instance, in the television environment, STBs provide personal user information to the head-end of the cable service provider. Moreover, in order to target the most likely consumer, the server device should be given as much information about the user as possible. Requiring the user's private information to be sent across a network to the server device renders the private information vulnerable to theft and resale to unknown third parties. The moment a user's private information is sent from the client device, how the information is used is essentially out of the user's control. As a result, in typical advertising systems, in order for the user to receive advertisements appropriate for the user, the user must give up some portion of his/her privacy, which is not acceptable to many users. Additionally, with respect to many server devices, the personal information is gleaned via a two-way data communication method that involves multiple polling events. These polling events consume significant server resources and processing time, as well as bandwidth over the communications network. Consequently, the server interaction with the client in order to provide the user with appropriate content is inefficient.
It is with respect to these and other considerations that the present invention has been developed.
SUMMARY OF THE INVENTION The present invention relates to a system and method of targeting content, such as advertisements and other content items, to particular types of users without the users divulging any private information over a network server system. The system and method involves a server device that tags content based on predetermined criteria and then sends the tagged content to a client device. The client device receives the tagged content and uses the tags to filter the content locally based on a predetermined user profile.
In one embodiment, the invention relates to a method of targeting content to a user based on a user profile and content tags. Content is delivered to the user's client device. Each content item has a tag identifying a classification of the content. The client device recognizes and evaluates the tags to score each content item based on a local user profile. The content that has a score meeting a predetermined threshold is identified as being appropriate for presentation to the user. Appropriate content may then be selected and presented to the user. Generally, the user profile is a set of tags describing the classifications of content that are most appropriate for the user. The profile may be developed based on usage history or demographic information. The client device may also have a tag dictionary that may be updated to correspond to a common set of tags utilized by advertisers and/or server devices.
The invention may be implemented as a computer process, a computing system or as an article of manufacture such as a computer program product. The computer program product may be a computer storage medium readable by a computer system and encoding a computer program of instructions for executing a computer process. The computer program product may also be a propagated signal on a carrier readable by a computing system and encoding a computer program of instructions for executing a computer process.
A more complete appreciation of the present invention and its improvements can be obtained by reference to the accompanying drawings, which are briefly summarized below, and to the following detailed description of presently preferred embodiments of the invention, and to the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is an exemplary operating environment implementing an embodiment of the present invention.
Figure 2 is a computer system suitable for implementing an embodiment of the present invention.
Figure 3 is module diagram illustrating exemplary software, hardware, or firmware modules running in the computer system of Figure 2. Figure 4 illustrates an exemplary tagged data stream that may be received and processed by the computer system of Figure 2 and modules of Figure 3.
Figure 5 illustrates an exemplary portion of tagged content that may be used in an embodiment of the present invention.
Figure 6 illustrates another exemplary portion of tagged advertisement content that may be used in an embodiment of the present invention.
Figure 7 is a flow diagram illustrating operations carried out in a targeted content distribution system in accordance with an embodiment of the present invention.
Figure 8 illustrates an exemplary user interface that may be presented to a user of a client device in an embodiment of the present invention.
Figure 9 is a flow diagram illustrating exemplary operations that may be employed by a profile generator for maintaining a user profile, such as the profile shown in Figure 4.
Figure 10 is a flow diagram illustrating exemplary operations that may be implemented by a filtering module, such as the filtering module shown in Figure 4. Figure 11 is a flow diagram illustrating a particular embodiment of correlating, selecting, and notifying operations, such as those shown in Figure 10. Figure 12 is a flow diagram illustrating an exemplary process of scoring or correlating tags in accordance with an embodiment of the present invention. DETAILED DESCRIPTION
The invention is described in detail below with reference to the figures. When referring to the figures, like structures and elements shown throughout are indicated with like reference numerals.. Figure 1 illustrates an exemplary operating environment 100 employing an embodiment of the present invention. A server device 102 communicates with one or more client devices, such as client device 104 and/or client device 105, via a communication network 106. Server device 102 transmits media content, such as, but not limited to, video, audio, text, or executable programs, over the communication network 106 to be used by the client devices 104 and/or 105. Each of the client devices 104 and/or 105 has an output device, such as a computer monitor 114, or a television screen 116, for presenting user-appropriate media content to the user.
The server device 102 has memory 108 that stores media content in the form of data streams 110, 134, and 136. The server device 102 also stores an associated tag, such as tags 112, 130, and 132, with each data stream 110, 134, and 136, respectively. Each of the tags 112, 130, and 132 may be unique from the others and may further be associated with user classifications such as user demographics or usage patterns. The tags are used by client devices 104 and 105 to filter content; i.e., to determine which data stream to provide to users at the client devices, such as 104 and 105. In an embodiment, two or more data streams are transmitted with the tags to the client devices. Client devices determine which of the received data streams are appropriate for the user of the client device 104 by analyzing the tag information. The client devices 104 and 105 have access to a user profile, such as user profile 118 and 120 that is further used to analyze the tag information to determine which content should be presented.
In one embodiment, the client device 104 is a computer system. In this embodiment, the communication network 106 may be the Internet communicating Extensible Markup Language (XML) or Hypertext Markup Language (HTML) data to the client device 104. In this embodiment the server device 102 is a web server or an e-commerce application server. The user profile 118 comprises tags corresponding to user preferences for content received from the Internet. Upon receipt of a data stream 110 and its associated tag 112, the desktop computer client 104 evaluates the tag 112 and the user profile 118 to determine which data stream 110, 134, or 136 is most appropriate for the user. In one embodiment, if the tag 112 is highly correlated with or matches a tag in the user profile 118, the associated data stream 110 is identified as being appropriate for presentation to the user of the desktop computer client device 104.
In another embodiment, the client device 105 is a set-top-box (STB). In this embodiment, the communication network 106 may be a satellite television broadcast network and the server 102 may be a head-end of a cable service provider. The cable service provider generally broadcasts programming, advertising, "walled garden" merchandising offers, and other content. As mentioned above, the media content is broadcasted in the form of data streams 110, 134, and 136 and associated tags 112, 130, and 132 to the STB 105. The STB 105 evaluates the tags 112, 130, and 132 and the STB user profile 120 to determine which of the data streams 110,134, or 136 is most appropriate for the user of the STB 105. The STB 105 presents to the user the data stream(s) that are appropriate to the user based on the user profile 120.
While Figure 1 depicts two types of client devices 104, a personal desktop computer, and 105, a television set top box (STB), it is to be understood that the client devices 104 and 105 may be any device operable to communicate via the communications network 106, and operable to receive data streams 110 and tags 112. By way of example, and not limitation, the client device 104 may be a personal digital assistant (PDA), a laptop computer, or a cellular telephone, among others. By way of further example, and not limitation, the communication network 106 may be wireless network, an Ethernet, a local area network (LAN), a wide area network (WAN), or a television broadcast network, among others.
Figure 2 illustrates an exemplary system for implementing the invention with a computing device 200. In its most basic configuration, computing device 200 typically includes at least one processing unit 202 and memory 204. Depending on the exact configuration and type of computing device, memory 204 may be volatile (such as RAM), non-volatile (such as ROM, flash memory, etc.) or some combination of the two. This most basic configuration is illustrated in Figure 2 by dashed line 206. Additionally, device 200 may also have additional features/functionality. For example, device 200 may also include additional storage (removable and/or non-removable) including, but not limited to, magnetic or optical disks or tape. Such additional storage is illustrated in Figure 2 by removable storage 208 and non-removable storage 210.
Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. The memory 204, removable storage 208 and non-removable storage 210 are all examples of computer storage media. Computer storage media includes, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable ROM (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by device 200. Any such computer storage media may be part of device 200.
Device 200 may also contain communications connection(s) 212 that allow the device to communicate with other devices. Communications connection(s) 212 is an example of communication media. Communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media. The term "modulated data signal" means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. By way of example, and not limitation, communication media includes any information delivery media. The term "modulated data signal" means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. By way of example, and not limitation, communication media includes wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, radio frequency (RF), infrared and other wireless media. The term computer readable media as used herein includes both storage media and communication media.
Device 200 may also have input device(s) 214 such as keyboard, mouse, pen, voice input device, touch input device, remote control unit, etc. Output device(s)
216 such as a display, speakers, printer, etc. may also be included. All these devices are well known in the art and need not be discussed at length here.
In one embodiment, the computing device 200 is the set-top box 105. In this particular embodiment, the set-top box 105 provides a control interface through which a subscriber makes viewing selections by, e.g., using a remote control unit, a keyboard, or a control panel. In providing this interface, the set-top box 105 performs the following functions: (1) routes traditional broadcast signals to the connected viewing device; (2) converts media content to a selected video format (e.g., NTSC or PAL) and presents the content to the subscriber; (3) for interactive systems, exchanges messages (including display data) with the server device 102 over distribution network 106; (4) receives messages from a subscriber input device, such as a remote control unit; (5) translates video signals from a network-native format into a format that can be used by the viewing device; (6) inserts alphanumeric or graphical information (e.g., program guides, menus, etc.) into the video stream to overlay that information on the video image; and (7) provides graphic or audio feedback to the subscriber. Examples of commercially available set-top boxes 105 that satisfy these functions include an SA Explorer 2000 set-top box by Scientific Atlanta, a DCT-5000 set-top box by Motorola/General Instruments, and a Z12C set-top box by Zenith.
Figure 3 is a functional block diagram of a client-server system 300 employing an embodiment of the present invention. As discussed in more detail below, the client-server system 300 provides targeted content to users of the system 300. The content may include advertising and non-advertising content, including, but not limited to, news, games, programming, books, and sports. A server 302 transmits media content to a client 304. Media content sent by the server 302 is in a tagged data stream format. Data streams at the server 302 are tagged with tags corresponding to classifications of users. Classifications include, but are not limited to, demographics, such as viewing preferences, age, gender, location, and income. The tags allow the client device 304 to select among all data received by the client device so that the most appropriate content is provided to the user of the client device 304.
In one embodiment, the server device 302 includes a retrieving module 306, a receive module 308, and a send module 310. The receive module 308 receives requests from the client. An example of a request from the client 304 is a Hypertext Transport Protocol Request for an Internet page in on the server 302. In the response to the request, the server 302 uses a send module 310 to send multiple, tagged data streams of content to the client 304. The available tagged content is retrieved from a tagged data memory 307 by the retrieving module 306. The tagged data memory 307 contains tagged content items. Tagged content items are generally data streams with tags describing predetermined classifications such as demographics categories associated with the data streams. The server device 302 may obtain the tagged content items from content providers (e.g., advertisers) that tag the content based on the type of user targeted by the content providers or the server may tag the items itself. The send module 310 receives the tagged content items from the retrieving module 306 and transmits the tagged content items to the client 304.
In another embodiment, the server device 302 does not have a receive module 308, for instance, in some cases, the server device 302 primarily broadcasts content onto a broadcast network (e.g., satellite TV). In this embodiment, an STB
105 connected to the broadcast network receives the broadcasted content, but does not need to send information back to the server device 302. Thus, as is discussed below, the send module of the client device 302 is not necessary in the broadcast TV/STB implementation. In this embodiment, the STB 105 simply receives multiple, tagged data streams of content sent by the server device 302 and filters the content locally. . The client device 304 includes a receive module 312, which receives the transmitted tagged data streams from the server device 302. The receive module 312 performs all tasks associated with receiving data from the server 302, including detecting incoming data, and synchronizing to receive the data. The receive module 312 sends the tagged data to a storage module 314, which stores the received tagged data in a tagged data memory 316. The storage module 314 may store the tagged data in any arrangement in the tagged data memory 316 that is suitable for the particular implementation. For example, the storage module 314 may group certain types of content together. The storage module 314 may group advertising content together, games content together, movies content together, etc. Preferably, the tagged data will be organized in the tagged data memory 316 in a way to facilitate quick and efficient access but such organization is not necessary. The storage module 314 may also pass certain content straight through, without storage, to a user input/output module 318.
The user input/output module 318 performs tasks associated with conducting media content to an output device such as a display monitor, speakers, or a printer. The user input/output module 318 also performs tasks associated with receiving input from a user, such as mouse clicks, keyboard entry, or remote control entry. While a user inputs data, the user input/output module 318 detects the user input and may transmit the user input to an analysis module 320 for analysis. The analysis module 320 evaluates user input to detect patterns in the user input. Based on the detected usage patterns, the analysis module 320 updates a user profile 322.
For one embodiment, the analysis module 320 also detects events that prompt output of media content. Events that prompt output of media content are generally referred to as insertion events. The analysis module 320 may receive these events from the storage module 314 or the user input/output module 320. An event from the storage module 314 may be an advertisement insertion event, which indicates that an ad should be displayed to the user at a predetermined time. One example of an advertisement insertion event is a cue tone contained within the network TV broadcast, which may be transmitted along with other media content from the server 302. In general, insertion events that are received from the server 302 may be referred to as external or predetermined events because they arise externally from the client and indicate a predetermined time for display. Another type of insertion event that the analysis module 320 may detect is an internal event that arises on the client side. One example of an internal insertion event is a user initiated menu selection from a STB navigator, such as the user requesting a list of available television shows, a list of games that are available to play online or the books available via the online bookstore. Each list of respective items offered may be tagged by the server system and filtered by the client device so as to optimize the presentation order to the user that would present the item with the highest probability of interest. Furthermore, the initial navigator menu presented on the display may be customized automatically by the client device based upon prior user behavior and profile so as to order the list of available activities or actions (e.g., preferences for television program, games, shopping, news, mail, etc), thereby presenting the user with a list best matching their probable activities. Additionally, such prior user behavior can be implemented by the client device to exhibit content in a predetermined sequence (e.g., preferred content type displayed first upon user initiation of the device).
As a specific example, when a user turns on the user's television set and STB, the user immediately is presented with content, advertising, programming, etc which matches the user's profile. The user may then select a list of options of a certain type of media content. For example, the user may select that a list of games be shown from which the user can choose. The analysis module 320 would detect the user's selection of a list of games as an insertion event. A menu of a list of games may then be displayed so the user may select the game that he/she wants to play. The analysis module 320 again will receive an insertion event to insert the selected game into the output module. The analysis module 320, upon receiving an insertion event, accesses the storage module 314 to identify the most appropriate media content that should be displayed to the user.
The storage module 314 transmits tagged data to the analysis module 320, which filters the tagged data using tag information stored in the user profile 322. The analysis module 320 determines which tagged data in the tagged data memory 316 most closely matches tags or tag information in the user profile 322. The tagged data that most closely matches the information in the profile 322 is transmitted to the user input/output module 318 for presentation to the user. Thus, the content that is presented to the user is the content from the server 302 that most closely matches the user profile 322, and is thereby the most appropriate for the user's preferences. Advantageously, the selection of the most appropriate media content to present to the user is made without transmitting to the server device 302 any or substantially little private user information. Thus, unlike other systems, the media content can be targeted to a user without the user giving up his or her privacy. In one embodiment, the client device 304 has a send module 324 for sending data, such as requests, to the server device 302. An example of this embodiment is a client computer communicating to a server computer over the Internet, wherein the client computer sends Hypertext Transport Protocol (HTTP) requests to the server computer to browse web pages.
In another embodiment, the client device 304 need not have a send module 324. As discussed above, an example of this embodiment is a STB 105 receiving content from a broadcast TV network. In this embodiment, the STB 105 does not send requests for data. Rather, the server device 302 (e.g., head-end of a cable service provider) is constantly broadcasting content on a number of channels that the STB 105 can switch to.
With specific reference to an embodiment employing the STB 105, the STB 105 employs modules such as those depicted in Figure 3 to complete many intelligent functions, including the collection, storage, exchange, and display of data. To satisfy these functions, the STB 105 has a navigator, an operating system, and a memory buffer. The operating system is a computer program that, after being initially loaded into the STB 105 by a bootstrap program, manages the other programs, or applications, running on the STB 105. The navigator is a software application running on top of the operating system. The navigator is provided by the user I/O module 318 and generates menu screens and accepts viewer menu selections such as movie orders, preview orders, or requests to enter an interactive "walled-garden" environment that may supply news, offer products, etc. Based on these selections, the navigator directs the storage module 314 to deliver the selected program, e.g., the storage module 314 plays the selected movie. In addition, the navigator records viewer selections or event data in memory, such as memory 204. As is discussed below, the recorded viewer selections or event data may be analyzed by the analysis module 320 to detect usage patterns.
Figure 4 is a more detailed functional block diagram of an analysis module such as the analysis module 320 in accordance with aspects of a particular embodiment of the invention.. The analysis module 320 includes a content insertion engine 402, a filtering module 404, and a profile generator 406. The content insertion engine 402 receives data from the storage module 314 and the user I/O module 318, and determines whether an insertion event occurs. By way of example, for video advertising, the insertion event may be a network cue-tone. If an insertion event does occur, the content insertion engine 402 transmits an insert command to the filtering module 404 to indicate that media content is to be inserted (i.e., presented to the user). In response to receiving the insert command, the filtering module 404 accesses tagged data from the storage module 314 and tags from the profile 322 to filter out inappropriate media content stored in the tagged data memory 316. The filtering module 404 determines which data in the tagged data memory 316 is appropriate for presentation to the user based upon the tagged data's level of similarity to the tags in the profile 322. Determining the tagged data's level of similarity may be done by scoring each of the tags stored in the tagged data memory 316. As is discussed below in more detail, scoring the tags in the tagged data memory may involve determining the tags' relative correlation to the tags in the user profile 322. The filtering module 404 transmits a command to the user I/O module 318 to output the appropriate media content. The filtering module 404 may send a message to either the user I/O module 318 to get the appropriate content from the storage module 314. Alternatively, the filtering module 404 may transmit a message to the storage module 314 to instruct the storage module 314 to transmit the appropriate content to the user I/O module 318.
The profile generator 406 receives data from the user i/o module 318 and updates the profile 322 according to inputs from the user. The profile generator 406 dynamically updates the profile 322 based on a history of user inputs so that when the filtering module 404 accesses the profile 322, the filtering module 404 will filter the tagged data memory 316 based on the most recent user preferences indicated by the profile 322. Alternatively profiles are static, and/or predetermined. Alternatively, the information is not organized. The profile generator 406 preferably organizes tags in the profile 322 for fast and efficient access.
The user profile 322 is preferably stored in memory accessible by one or more microprocessors of the client device 304. The memory that stores the user profile 322 can be any memory medium known in the art, including, but not limited to, Personal Computer Memory Card International Association (PCMCIA) memory, Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable ROM (EEPROM), or hard disc drive memory. It should be understood that the user profile 322 need not be stored contiguously in memory and may be separated in a memory medium accessible through a file system that maps memory locations to data. In practice, one or more of the modules shown in Figures 3-4 may be integrated on a single integrated circuit in any combination. Alternatively, they may be separately implemented in software or hardware.
Figure 5 illustrates a portion of tagged content 500 that may be used in an embodiment of the present invention. The portion of tagged content 500 includes tag/content pairs such as pair 504 including a tag, such as tag 506, and associated content, such as content 508. As discussed above, the content may be any type of content, including, but not limited to, advertisements, and content items containing descriptions (e.g., title, author, price, theme, etc) of content such as books, movies, games, etc. Each tag describes its associated content with predefined information. In one embodiment, the tags 506, 510, and 514 have a type identifier 516, a title identifier 518, an age identifier 520, a gender identifier 522, an income identifier 524, a location identifier 526, and a family identifier 528. The identifiers relate to 518, 520, 522, 524, 526 and 528 what type of viewer the content is appropriate for. For example, the tag 510 indicates that the content 512 associated with the tag 510 is an advertisement about Budweiser® beer. The tag 510 further indicates that the content 512 is targeted for males from the ages 21-55. Additionally, the tag 510 indicates that the viewer who is targeted may be in any income level, at any location, and have any family characteristics (e.g., kids, married, etc.). The tags 506, 510, and 514, are appended to the content 508, 512, and 515, respectively by the server 302. The client 304 uses the tags to determine whether the content 508, 512, and 515 is appropriate for the user at the client device 304. The client 304 and server 302 utilize a common tag format. In one embodiment, providers of content to the server device 304 tag the content before making it available to the server 304. The content providers fill in the identifiers, such as type, title, age, gender, income, location, and family, with the identifying data that the provider determines is the best target audience. In another embodiment, the server device 302 appends the tags to the content. In this embodiment the server device 302 is operable to determine what identifying information is most appropriate to the content and fill in each of the identifiers accordingly. The server device 302 has a dictionary of identifiers (e.g., type, title, age, gender, etc.) to select from. The tags that the client device 304 uses in the user profile 322 have the identifiers (e.g., type, title, age, gender, etc) selected from a common set of identifiers. Thus, the client device 304 and the server device 302 utilize a common tag format having common identifiers.
Over time, identifiers may change. For example, another identifier, such as "Education Level", may be added to the tag format. When the tag format changes, the switch to the new tag format at the server device 302 is preferably synchronized with the switch to the new tag format at the client device 304. While Figure 5 illustrates exemplary identifiers in an exemplary format, it is to be understood that any identifiers may be used that effectively target users. It is envisioned, for example, that the "type" identifier may have "subtypes." This may occur when the type is "movie." A subtype further classifies the movie into genres such as, but not limited to, westerns, comedy, horror, drama, action, etc. Another example of subtyping is when the type is "sports." Subtypes of sports may be football, basketball, baseball, hockey, etc. Subtyping further targets users based on narrower classifications because the user profile 322 may be dynamically updated to track a user's selections of subtypes. Additionally, as is discussed in more detail below, tags may include a weight value associated with each identifier, indicating the relative importance of that identifier to the targeting of the content to users.
Figure 6 illustrates another exemplary portion of tagged advertisement content that may be used in an embodiment of the present invention. Three advertisements 608, 612, and 615 are shown with associated tags 606, 610, and 614, respectively. Advertisement 608 is identified by its associated tag 606 to be an advertisement for Clinique® products and is directed to females of a middle income and from ages 21-50. Advertisement 612 is identified by its associated tag 610 as being an advertisement for Budweiser products and is directed to males of from ages 21-55, of any income, location, or family arrangement. The advertisement 615 is identified by its associated tag 614 as being an advertisement for Blue's Clues® program for children ages 2-7, and a family arrangement with kids.
In embodiments described herein, the logical operations of the client device 304 and the server device 302 may be implemented as a sequence of computer implemented steps or program modules running on a microprocessor, such as, without limitation, a processor in a personal computer or a computer workstation. It will be understood to those skilled in the art that the client device 304 and the server device 302 of the present invention may also be implemented as interconnected machine logic circuits or circuit modules within a computing system. The implementation is a matter of choice dependent on the performance requirements of the computing system implementing the client device 304 and the server device 302. The operation, structural devices, acts, and/or modules described herein may be implemented in software, in firmware, in special purpose digital logic, and/or any combination thereof without deviating from the spirit and scope of the present invention as recited within the claims attached hereto. Furthermore, the various software routines or software modules described herein may be implemented by any means known in the art. For example, any number of computer programming languages, such as "C", "C++", Pascal, FORTRAN, assembly language, Java, etc., may be used. By way of further example, and not limitation, any scripting language known in the art may be used, such as Korn shell script. Furthermore, various programming approaches such as procedural, object oriented or artificial intelligence techniques may be employed.
The client device 304 and the server device 302 may be implemented as software modules executed by one or more general purpose computers, such as the general purpose computer 200 illustrated in Figure 2. As described in greater detail below, the client device 304 may be employed to receive, store, filter, and present media content, such as movies, games, and/or advertisements. The client device 304 employs computer-readable media for carrying out the various tasks associated with targeting content to the user of the client device 304.
Figure 7 is a chart illustrating operations carried out in a targeted content distribution system in accordance with an embodiment of the present invention. Initially, a tagging operation 704 tags content items that will be transmitted to the user of the client device 304. The server device 302 may perform the tagging operation. Alternatively, an advertiser that provides content to the server device 302 may perform the tagging operation 302. The tagging operation 704 involves associating tags describing relevant classifications with content items. As discussed with respect to Figure 5, a tag includes identifier information for various classifications, such as demographics. The tagging operation 704 may involve assigning weighting values to tag identifiers, which indicate a relative importance of each identifier. Thus, for example, in the tagging operation 704, a tag for a beer ad may include age identification information of 21-55, with a relative weight of 1, and an income identification range of $30,000 - $ 100,000, with a relative weight of .5. In this example, the tag indicates that targeting users in the identified income range is of less importance than targeting users in the identified age range.
After the content items are tagged, an establishing operation 708 establishes a communication connection between a client device 304 and a server device 302. Establishing a communication connection may be carried out using any means known in the art. By way of example, and not limitation, in an Internet environment a client computer typically send a request (e.g., a Hypertext Transport Protocol request) to a server computer to request a particular web page identified by a Universal Resource Locator (URL). As a further example, a connection may be established in a cable television environment by a set-top-box switching to a channel or transport frequency. Many other methods of establishing a communication connection are known in the art and will fall within the scope of the establishing operation 708.
The server device 302 then sends data to the client device 304 in a sending operation 712. The data includes more than one of the tagged content items that were tagged in the tagging operation 704. The server may send content items using any transmission protocol known in the art, including, but not limited to, a proprietary protocol. Sending the tagged content may include encoding the tagged content items, packetizing and/or formatting the encoded tagged content items, and modulating a carrier frequency with the packetized data. In the sending operation
712, the server may also append a unique client device identifier to the tagged content data such that a particular client device 304 is associated with the tagged content items. In a computer Internet environment, the client computer typically has a unique Internet Protocol (LP) address. In a cable television environment, each STB has a unique identifier. In general, each client device 304 may be uniquely identified on the network so that the server device 302 may send tagged content items directly to each client device in the sending operation 712. As discussed above, the tagged content items that are sent in the sending operation 712 may be any content, including advertising. The server device 302 may send the content items in any order applicable to the implementation. For example, in one implementation it may be most efficient for the server device 302 to send all advertisements in a group; i.e., sequentially, and then all video content items sequentially, followed by all book content items sequentially, and so on.
In a receiving operation 716, the client device 304 receives the tagged content items that were sent in the sending operation 712. Generally, the client device 304 is detecting data on the communication network 106. In the receiving operation 716, the client device 304 detects tagged content items that are directed at the client device 304, demodulate, and decode packetized or formatted tagged content items. Depending on the particular implementation, the receiving operation 716 may involve synchronizing to a data signal from the server device 302. After the client device 304 receives the tagged content items in the receiving operation 716, the client device 304 may present one or more of the tagged content items to the user. The client device 304 may also cache the tagged content items in a caching operation 720.
In the caching operation 720, the tagged content items are stored in memory that is accessible by the client device 304 for possible later presentation to the user. The tagged content items may be logically stored in memory in any arrangement in the caching operation 720. For instance, the caching operation 720 may involve logically storing the tagged content items contiguously in memory as they are received. Alternatively, the caching operation 720 may logically group certain types of content (e.g., video content) together in memory. However the content items are arranged logically in memory, it is to be understood that the physical locations in the memory may not follow the logical arrangement.
During operation, the client device 304 may recognize an indication to insert one or more content items from the cache in a recognizing operation 724. Inserting a content item generally refers to presenting the content item to the user. The manner in which the content item is presented to the user is generally related either spatially (e.g., on a display monitor) or temporally (e.g., synchronized in time) to other content that is sent to the client device 304. In the recognizing operation 714, in a STB/TV environment, the client device 304 may receive a cue tone from the head-end, which indicates that an advertisement is to be displayed at a designated time. Also in the STB/TV environment, the client device 304 may receive input from the user to display a menu of content items (e.g., games). In this case, the input from the user is an indication to insert one or more content items (e.g., game content items) in a menu to the user. After the client device 304 recognizes an indication to insert content, the client device 304 performs a selecting operation 728. In the selecting operation 728, the client device 304 evaluates the tags that were stored in the caching operation 720 based on a user profile (e.g., user profile 322), to determine whether one or more of the stored content items is appropriate for presentation to the user. Any method of evaluation may be employed by the client device 304 in the selecting operation 728 to select one or more appropriate content items. In one embodiment, if none of the stored content items are determined to be appropriate in the selecting operation 728, a default content item may be presented. An exemplary method of evaluation is discussed in detail below in reference to Figures 10-12. In a presenting operation 732, the client device 304 presents to the user the one or more content items that were identified as appropriate in the selecting operation 728.
Figure 8 illustrates an exemplary user interface 800 that may be presented to a user of a client device 304 in an embodiment of the present invention. The user interface 800 includes two menus presented to the user allowing the user to make selections. A content type menu 804 presents the user with four types of content from which to choose: movie content 806, games content 808, books content 810, and children's programming content 812. The user may select any of the items listed in the content type menu 804 to obtain a list of content items of the selected content type. As illustrated, the user chooses 816 the games content 808. When the user chooses 816 the games content 808, a games menu 818 is displayed with a list of five available and appropriate games: "Warlords" 820, "BattleZone" 822, "BMX Rally" 824, "Indy Racer" 826, and "Madden NFL" 828. The user may then select one of the games listed on the games menu 818 to get more information about a particular game. Most relevant to the present invention is the process that occurs when the user chooses, at choose operation, 816 one of the games content item 808. When the user chooses 816 the games content item 808, a content insertion event arises from the user I/O module 318. The user I/O module 318 sends a message to the content insertion module 402 (Figure 4)indicating that a list of appropriate games is to be presented to the user. Additionally, the list of games will preferably be sorted in order of user preference. The content insertion engine 402 responds by sending a message to the filtering module 404 notifying the filtering module 404 to filter games content items and provide the most appropriate or preferred game. In one embodiment, the content insertion engine 402 employs the filtering module 404 five times to obtain the five most appropriate game content items available in the tagged data memory 316. The content insertion engine 402 then sends the list of five game content items to the user I/O module 318 for presentation to the user on the games content menu 818. Generally, prior to filtering content in response to insertion events, a user profile 322 is established for targeting purposes. Figure 9 describes one exemplary process for establishing the user profile 322. However, it is to be understood that in other embodiments, content may be targeted to all users, or all users in a particular category. This is particularly relevant to broadcast TV in which the head-end of the cable service provider may send content to everyone within a particular zip code. Thus, regardless of the user profile 322, everyone in the zip code would be targeted. Figure 9 is a flow diagram 900 illustrating exemplary steps or operations that may be employed by the profile generator 406 for generating and updating the profile 322 to correspond to user preferences. In the embodiment, the user upon initial power-up may be prompted to fill out a survey to provide information about the user to the client device 304. In a querying operation 902, it is determined whether a survey mode has been entered. The survey mode may be entered any number of ways, including a determination that a survey has not yet been filled out, or the user manually selecting a survey mode. If it is determined in the querying operation 902 that the survey mode has been entered, an administering operation 904 administers a survey to the user. During the administering operation 904, the user enters demographic or other data that correspond to the user and his/her preferences for content. Importantly, the data entered by the user in the survey is not released from the client device 304. Rather, the client device 304 uses the survey data to maintain the user profile 322 to provide future content to the user.
Using the demographic data entered during the administering operation 904, a building operation 906 generates tags corresponding to the user's selections in the administering operation 904. As discussed above, the tags have identifier information. The identifier information generated in the building operation 906 associates the user's survey data with categories of common identifiers discussed in Figure 5. An updating operation 908, updates the profile 322 with tags that were generated in the building operation 906.
If it is determined that the survey mode has not been entered in the querying operation 902, flow branches NO to query operation 910, which determines whether a manual tag input mode has been entered. Querying operation 910, determines whether the user has selected an option for manually entering specific tags associated with media content that the user prefers (or does not prefer) to be presented. If it is determined in the querying operation 910 that a manual tag input mode has been entered, flow branches YES to presenting operation 912 which presents tag options to the user that the user may select. The presenting operation 912 may present tags that have been previously compiled based on tags received from the server device 302, or the presenting operation 912 may access a directory of tags that is periodically updated in the client device 304. After the presenting operation presents tag options to the user, the updating operation 908 updates the user profile 322 with the tags selected by the user in the presenting operation 912. If, in the querying operation 910, it is determined that the manual tag input mode has not been entered, flow branches NO to detect operation 914 which begins to detect user selections. The detecting operation 914 may detect any selections, such as, but not limited to, mouse clicks, keyboard entry, or remote control data entry. The detecting operation 914 may record the user selections along with other related information such as time of entry, or duration of viewing particular content. For example, in a set-top box implementation, the detecting operation 914 may detect a user selecting a Home Box Office® (HBO®) movie "Band of Brothers"®. The detecting operation 914 records when the user begins watching "Band of Brothers"® as well as when the user changes the channel to another channel, such as a football game on CBS®. The collection, over time, of viewing patterns and preferences builds a user profile indicating the relative interest in different genres of content programming, such as sports, movies, dramas, education, children, etc. Multiple levels of detail (e.g., subtypes) can be derived, such as specific types of sports.
After the detecting operation 914 detects a user selection, a storing operation stores a tag associated with the user selection. As discussed, all media content, including programming, from the server device 302 includes a tag descriptive of the type of content. The tag may be stored for analysis, such as determining a pattern in the user's selections. The user profile 322 is then updated in an updating operation 918. The updating operation 918 involves storing the tags of most viewed content in the user profile 322, preferably in such a way that the tags are quickly accessible. After the user profile 322 is updated by the updating operation 918, operation loops back to the detecting operation 914 wherein subsequent user selections are detected. The detecting operation 914, the storing operation 916, and the updating operation 918 may be iterated indefinitely until the user turns off the client device 304.
Figure 10 is a flow diagram 1000 illustrating exemplary steps or operations that may be implemented by the filtering module 404 to filter out media content received from the server device 302 that is less preferred by the user. A receiving operation 1002 receives a command to insert media content from the content insertion engine 402. A correlating operation 1004 then correlates tags in the user profile 322 with tags from the storage module 314 to determine which tagged data from the storage module is most preferred by the user. In the correlating operation 1004 it is determined whether tags in the storage module 314 are similar to tags in the user profile 322. In one embodiment, the correlating operation 1004 may determine a level of correlation or matching for each data stream in the storage module 314. For example, the correlating operation 1004 may determine that two tags sufficiently match if at least three identifiers in the tags are the same, even if some other identifiers are different between the tags. If the level of matching is above a predetermined threshold, the data stream may be presented to the user. A selecting operation 1006 then selects the media content that most closely matches the user profile 322. If the insertion command received in the receiving operation 1002 is an ad insertion command, the selecting operation 1006 preferably selects one advertisement from the storage module to be presented to the user. If more than one advertisement sufficiently matches a tag in the user profile 322, the selecting operation 1006 may select an advertisement that has not been presented to the user recently. In a notifying operation 1008 the user I/O module 318 is notified of the media content to be presented to the user that was selected in the selecting operation 1006.
Figure 11 illustrates a detailed embodiment of the correlating, selecting, and notifying operations 1004, 1006, and 1008. Upon receipt of an insertion event, the analysis module 320 searches the content in the tagged data memory 316 to determine if content is available that is appropriate for the user of the client device 304. In a retrieving operation 1104, the filter module 404 retrieves a tag from the storage module 314. In this particular embodiment, the storage module 314 reads a tag out of the tagged data memory 316 and keeps track of the order of dispensing tags to the filter module 404. The filter module 404 retrieves a tag out of the user profile 322 in another retrieving operation 1108. In a comparing operation 1110, the filter module 404 compares the tag from the storage module 314 to the tag from the user profile 322 to determine if the two tags meet a predetermined correlation threshold. Comparing the two tags may be accomplished using any method known in the art and depends on how the tags are encoded in the particular implementation. For example, identifiers in the tags may be encoded as single bits (either on or off). In this example, the comparing operation 1110 may perform a bit-masking operation, which is a computationally efficient way of comparing bits. If it is determined that the two tags retrieved in operations 1104 and 1108 meet the predetermined correlation threshold, the filter module 404 selects the tag retrieved from the storage module 314 in a selecting operation 1114. In the selecting operation 1114, the filter module requests the content associated with the selected tag from the storage module 314 and delivers the content to the user I/O module 318. However, if the two tags compared in the comparing operation 1110 do not meet the predetermined correlation threshold, the filter module 404 determines whether anymore tags exist in the user profile. In a determining operation 1118, the filter module 404 reads the user profile 322 to determine if another tag is available for comparison. If so, the filter module 404 retrieves the next tag from the user profile 322 in a retrieving operation 1122. After the next tag is retrieved from the user profile 322, the comparing operation 1110 compares the next user profile tag with the tag retrieved from the storage module 314. If, on the other hand, it is determined that no other tags are in the user profile
322, flow branches NO to determine operation 1126. The determining operation 1126 determines whether another tag exists in the tagged data memory 316 for comparison. In the determining operation 1126, the filter module 404 may request another tag from the storage module 314. If no more tags are in the tagged data memory 316, the storage module 314 sends back an error message to the filter module 404. If the storage module 314 identifies another tag in tagged data memory 316, the storage module 314 sends the tag to the filter module 404. The filter module 404 thereby retrieves the next tag in a retrieving operation 1130. After the next tag is retrieved from the storage module 314, operation returns to the retrieving operation 1108 wherein the first tag in the user profile is again retrieved, and the sequence of comparison and retrieval begins again.
If it is determined that no more tags are available in th,e tagged data memory 316 in the determining operation 1126, or after appropriate content is selected in the selecting operation 1114, the correlating operation 1004 ends. If the correlating operation 1004 ends without any tags in the tagged data memory 316 meeting the correlation threshold, an error message may be sent to the user I/O module 318. The user I/O module 318 can either display a message that content is not available, or the user I/O module 318 can display predetermined default content.
Figure 12 is a flow diagram illustrating an exemplary operations that may be employed in the comparing operation 1110 of Figure 11. Input to the operation is a tag from the tagged content memory 316 and a tag from the user profile 322. In general, the operational flow of Figure 12 iterates through identifiers in the tag from the tagged data memory 316 and associated identifiers in the tag from the user profile 322, determining if the identifying data for the tags matches. After all the identifiers are iterated through, a score is generated that may be used to filter the tag and/or rank the tag in terms of user preference and/or filter the content. In an initializing operation 1202, a weighted average value is set equal to zero. The weighted average value is used to keep track of the score associated with the tag. In a retrieving operation 1204, an identifier (e.g., type identifier 516 of Figure 5) and its identifying data (e.g., "Game") is retrieved from the tag from the tagged data memory 316. In another retrieving operation 1208, an associated type identifier and its identifying data are retrieved from the user profile tag. In a comparing operation 1210 it is determined whether the identifying data for the two associated identifiers match. For example, if the type identifying data is "Game" in both the tags, the identifiers match. When the identifier data matches, a scoring operation 1214 accumulates a running score associated with the tag from the tagged data memory 316. In one embodiment, the scoring operation 1214 involves calculating a weighted average of the identifiers. If, in the comparing operation 1210, the identifier data of the tagged data memory tag does not match that of the user profile tag, and after the scoring operation 1214, a determining operation 1226 determines if another identifier remains in the tags to be compared.
If another identifier (e.g., title identifier 518 of Figure 5) remains for comparison, the retrieving operation 1204 retrieves the identifier and its identifying data from the tagged data memory tag. Processing continues as before to compare the corresponding identifier data of the user profile tag. If no more identifiers remain to be processed in the determining operation 1226, another determining operation 1230 determines if the score computed in the scoring operation 1214 is above a predetermined threshold value. If the score is not above the predeteπnined threshold value, a return no operation 1234 returns an indicator that the tag from the tagged data memory 316 is not sufficiently correlated to the user profile tag. If the score is above the predetermined threshold value, a return yes operation 1238 returns an indication that the tag from the tagged data memory 316 is sufficiently correlated to the user profile tag. In both the return operations 1234 and 1238, the score may be returned along with the indicator. The score may be used by the calling module to sort tagged data memory tags according to preference.
The method steps illustrated in Figures. 7-12 may be implemented in firm ware in the disc drive or in a computer connected to a disc drive. Additionally, the logical operations of the various embodiments of the present invention are implemented (1) as a sequence of computer implemented acts or program modules running on a computing system and/or (2) as interconnected machine logic circuits or circuit modules within the computing system. The implementation is a matter of choice dependent on the performance requirements of the computing system implementing the invention. Accordingly, the logical operations making up the embodiments of the present invention described herein are referred to variously as operations, structural devices, acts or modules. It will be recognized by one skilled in the art that these operations, structural devices, acts and modules may be implemented in software, in firmware, in special purpose digital logic, and any combination thereof without deviating from the spirit and scope of the present invention as recited within the claims attached hereto.

Claims

CLAIMSWhat is claimed is:
1. A method of providing targeted media content in a distributed network, the distributed network having a client device and a server device, the method comprising: storing a user profile having one or more user profile tags corresponding to user classifications; receiving a plurality of tagged content items, each having a targeting tag; evaluating the plurality of tagged content items in view of the user profile; and presenting one of the plurality of tagged content items based on the evaluation.
2. The method of claim 1 wherein storing further comprises defining a user profile based on usage.
3. The method of claim 1 wherein storing further comprises defining a user profile based on manual input.
4. The method of claim 1 wherein the method is performed by a television set-top-box and wherein the distribution network is a television broadcast network.
5. The method of claim 1 wherein the method is performed by a computer device and wherein the distribution network is the Internet.
6. The method of claim 1 wherein the receiving act further comprises storing the tagged content.
7. The method of claim 6 wherein storing the tagged content comprises arranging the content in an organized manner.
8. The method of claim 1 wherein each of the targeting tags comprises a plurality of tag identifiers, the tag identifiers corresponding to user tag identifiers in the user profile tags, and wherein the evaluating act compares corresponding tag identifiers and user tag identifiers to determine a score for the associated tag information.
9. The method of claim 1 further comprising: recognizing a content insertion event; and presenting one or more content items in response to recognizing the content insertion event.
10. The method of claim 9 wherein the recognizing act comprises: receiving an internal content insertion event.
11. The method of claim 9 wherein the recognizing act comprises: receiving an external content insertion event.
12. The method of claim 10 wherein the internal content insertion event is a user initiated menu selection for content.
13. The method of claim 11 wherein the external content insertion event is an advertising insertion event.
14. A client device for providing target content comprising: a user profile having one or more user profile tags associated with user preferences; a tagged content memory storing a plurality of content items, each having and associated tag associated with a classes of targeted users; and a filtering module operable to filter out a content item whose associated tag is not sufficiently similar to any of the one or more user profile tags; and a user input/output module operable to present content to a user of the client device and further operable to detect a content selection from the user;
15. The method of claim 14 further comprising: a profile generator module in operable communication with the user input/output module and the user profile, operable to update the user profile based on the content selection from the user.
16. The method of claim 15 further comprising : a content insertion engine in operable communication with the user input/output module and the filtering module, operable to detect a user initiated insertion event and request from the filtering module an appropriate content item based on the user selection and the user profile.
17. The method of claim 16 further comprising: a receiving module operable to receive tagged content from a communication network; a storage module in operable communication with the receiving module and the filtering module, operable to store the received tagged content and provide the tagged content to the filtering module.
18. A media content distribution network comprising: a server device providing tagged media content; and a client device in operable communication with the server device, operable to receive all tagged media content and select the tagged media content that most closely matches a user profile.
19. The media content distribution network of claim 18 wherein the client device comprises: a receiving module operable to receive the tagged media content; a storage module in operable communication with the receiving module, operable to store the received media content
20. The media content distribution network of claim 19 wherein the client device further comprises: a filtering module in operable communication with the storage module and the user profile, operable to correlate tags in the storage module with tags in the user profile; and a user input/output module in operable communication with the filtering module, operable to receive a presentation request from the filtering module to present content associated with a tag.
21. In a network environment having server device and a client device, a computer program product readable by a computer and having stored thereon a data structure, comprising: a data stream having content that may be presented to a user; and a tag associated with the data stream, the tag comprising information related to the predetermined user classifications.
22. A data structure as defined in claim 21 further comprising a plurality of data stream and a plurality of associated tags, wherein at least one tag comprises different user classification information from one of the other tags.
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