US 20080068519 A1
A portable information device including a frame structure is disclosed herein. The device includes communications circuitry and a core electronics unit supported by the frame structure. The core electronics unit includes memory in which are stored instructions for one or more computer programs received by the communications circuitry and executed by a processor. A user interface in electrical communication with the core electronics unit is disposed to receive user instructions pertinent to execution of the one or more computer programs. The device also includes a flexible housing attached to the frame structure, the flexible housing at least partially defining a compartment containing the core electronics unit.
1. A portable information device comprising:
a frame structure;
a core electronics unit supported by the frame structure, the core electronics unit including memory in which are stored instructions for one or more computer programs received by the communications circuitry and executed by a processor;
a user interface in electrical communication with the core electronics unit, the user interface receiving user instructions pertinent to execution of the one or more computer programs; and
a flexible housing attached to the frame structure, the flexible housing at least partially defining a compartment containing the core electronics unit.
2. The portable information device of
3. The portable information device of
4. The portable information device of
5. The portable information device of
6. The portable information device of
7. The portable information device of
8. The portable information device of
9. The portable information device of
10. The portable information device of
11. The portable information device of
12. The portable information device of
13. A portable information device comprising:
a core electronics unit including a main circuit board and a display, the core electronics unit including memory in which are stored instructions for one or more computer programs executed by a processor;
a flexible housing structure at least partially defining a compartment containing the core electronics unit and an opening within which is positioned the display; and
a resilient fill material interposed between the core electronics unit and the flexible housing.
14. The portable information device of
15. The portable information device of
16. The portable information device of
17. The portable information device of
18. The portable information device of
19. The portable information device of
20. The portable information device of
21. A method for assembling a portable information device, the method comprising:
providing a first electronics sub-assembly;
securing the first electronics sub-assembly using a flexible frame; and
attaching a flexible housing to the flexible frame such that the flexible housing at least partially defines a compartment surrounding the first electronics sub-assembly.
22. The method of
providing a second electronics sub-assembly; and
flexibly connecting the first electronics sub-assembly and the second electronics sub-assembly.
23. The method of
attaching the second electronics sub-assembly to a rigid plate; and
attaching the rigid plate to the flexible housing.
24. The method of
25. The method of
26. The method of
defining an opening in the flexible housing;
attaching a plastic lip to a periphery of the opening.
27. The method of
28. The method of
29. The method of
attaching a display to the first electronics sub-assembly; and
placing thermally conductive material between the first electronics sub-assembly and the display such that heat is conducted from the first electronics sub-assembly to the display.
30. The method of
31. The method of
32. The method of
33. The method of
34. A method for assembling a portable information device, the method comprising:
forming a plastic frame by bending a piece of plastic material into a desired shape;
attaching a first electronics sub-assembly to the plastic frame, the first electronics sub-assembly including a processor and a display; and
sewing a flexible material to the plastic frame.
35. The method of
providing a second electronics sub-assembly; and
flexibly connecting the first electronics sub-assembly and the second electronics sub-assembly.
36. The method of
attaching the second electronics sub-assembly to a rigid plate; and
attaching the rigid plate to the flexible housing.
37. The method of
38. The method of
This application claims priority under 35 U.S.C. §119(e) to co-pending U.S. Provisional Application Ser. No. 60/805,830, entitled CONFIGURABLE PERSONAL AUDIOVISUAL DEVICE FOR USE IN NETWORKED APPLICATION SHARING SYSTEM, to co-pending U.S. Provisional Application Ser. No. 60/823,491, entitled SYSTEM AND METHOD FOR TRANSFERRING ELECTRONIC CONTENT TO NETWORKED PERSONAL AUDIOVISUAL DEVICES, to co-pending U.S. Provisional Application Ser. No. 60/823,493, entitled NETWORKED PERSONAL AUDIOVISUAL DEVICE HAVING FLEXIBLE HOUSING, to co-pending U.S. Provisional Application Ser. No. 60/823,496, entitled SYSTEM AND METHOD FOR AUTOMATICALLY UPDATING THE SOFTWARE OF A NETWORKED PERSONAL AUDIOVISUAL DEVICE, to co-pending U.S. Provisional Application Ser. No. 60/945,900, entitled REGISTRATION SYSTEMS AND METHODS FOR PERSONALIZED PORTABLE DEVICES, and to co-pending U.S. Provisional Application Ser. No. 60/869,297, entitled SYSTEM AND METHODS FOR LOCATION, MOTION, AND CONTACT DETECTION AND TRACKING IN A NETWORKED AUDIOVISUAL DEVICE, each of which is incorporated herein by reference in its entirety. This application is related to U.S. patent application Ser. No. ______, entitled CONFIGURABLE PERSONAL AUDIOVISUAL DEVICE FOR USE IN NETWORKED APPLICATION SHARING SYSTEM, filed on even date herewith, to U.S. patent application Ser. No. ______, entitled SYSTEM AND METHOD FOR TRANSFERRING ELECTRONIC CONTENT TO NETWORKED PERSONAL AUDIOVISUAL DEVICES, filed on even date herewith, and to U.S. patent application Ser. No. ______, entitled SYSTEM AND METHOD FOR AUTOMATICALLY UPDATING THE SOFTWARE OF A NETWORKED PERSONAL AUDIOVISUAL DEVICE, filed on even date herewith, all of which are incorporated by reference in their entirety.
It is well known that broadband Internet connectivity is becoming substantially more pervasive among consumers as a result of competition among service providers utilizing various different technologies (e.g., cable, digital subscriber line (DSL), satellite). In many households personal computers (PCs) constitute the primary users of the bandwidth furnished by these broadband connections. In order to facilitate sharing of the Internet connection among PCs in a given household, a variety of “wired” and “wireless” home networking technologies have been utilized.
As a result of the impracticality of installing Ethernet cable throughout a residence, RF-based wireless networking technology is becoming increasingly commonplace among consumers. Although systems based upon the 802.11b, or “Wi-Fi”, wireless networking standard may currently be the most pervasive, versions of the 802.11 standard offering increased bandwidth have been introduced and yet higher-bandwidth approaches have been proposed.
The increased bandwidth available within the home has increased the usage of a number of different services, such as Internet-based delivery of digital audio, video and graphic content. However, since many of these services are facilitated by a desktop or notebook PC capable of communication over a broadband Internet connection, users are forced to remain proximate to their respective computers in order to utilize such services. Although other strategies to leverage the availability of broadband Internet connectivity within the home are currently being developed, many of these approaches involve creation of a relatively powerful, costly centralized communications “hub” (e.g., a PC with enhanced media capabilities, or a multi-purpose cable set-top box). Unfortunately, this typically requires either the purchase of an expensive hardware device or extended subscription plan, and constrains the extent to which Internet-enabled entertainment or other services are enjoyed outside of the immediate vicinity of the centralized hub device.
Accordingly, the increasing availability of wireless bandwidth within the home and elsewhere creates an opportunity for economically leveraging this bandwidth in a flexible, consumer-friendly manner.
In summary, one aspect of the present invention relates to a portable information device including a frame structure. The device further includes communications circuitry and a core electronics unit supported by the frame structure. The core electronics unit includes memory in which are stored instructions for one or more computer programs received by the communications circuitry and executed by a processor. A user interface in electrical communication with the core electronics unit is disposed to receive user instructions pertinent to execution of the one or more computer programs. The device also includes a flexible housing attached to the frame structure, the flexible housing at least partially defining a compartment containing the core electronics unit. In particular embodiments the portable information device may contain resilient fill material interposed between the core electronics unit and the flexible housing.
In another aspect the present invention relates to a portable information device including a core electronics unit including a main circuit board and a display. The core electronics unit also includes memory in which are stored instructions for one or more computer programs executed by a processor. A flexible housing structure at least partially defines a compartment containing the core electronics unit and an opening within which is positioned the display. The device contains a resilient fill material interposed between the core electronics unit and the flexible housing. In particular embodiments the flexible housing structure includes a flexible frame member and flexible material attached to the frame member.
The present invention also relates to a method for assembling a portable information device. The method includes providing a first electronics sub-assembly and securing the first electronics sub-assembly using a flexible frame. The method further includes attaching a flexible housing to the flexible frame such that the flexible housing at least partially defines a compartment surrounding the first electronics sub-assembly. The method may also include flexibly connecting the first electronics sub-assembly and a second electronics sub-assembly.
In yet another aspect the present invention pertains to a method for assembling a portable information device. The method includes forming a plastic frame by bending a piece of plastic material into a desired shape. The method also includes attaching a first electronics sub-assembly to the plastic frame, the first electronics sub-assembly including a processor and a display. In addition, the method includes sewing a flexible material to the plastic frame. In particular embodiments the method includes flexibly connecting the first electronics sub-assembly and a second electronics sub-assembly.
For a better understanding of the nature of the features of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings, in which:
The present invention generally relates a system comprised of a set of personalized audiovisual devices in Internet-based communication with a service provider. It is anticipated that the personalized audiovisual devices will be commercially distributed under the trademark CHUMBY™, and may also be referred to herein as “CHUMBY™ devices”. During communication with the service provider, each CHUMBY™ device periodically receives a set of application programs, or “widgets”, which are sequentially executed by the CHUMBY™ device after being received from the service provider or locally from a personal computer (e.g., via a USB connection). Since each CHUMBY™ device is typically Internet-enabled, each may also be remotely configured and otherwise personalized via the CHUMBY™ service provider through a Web browser executed by a remote terminal (e.g., a PC or wireless handset). Such personalization may include, for example, specifying the set of widgets provided to a given CHUMBY™ device as well as their sequence and priority of execution.
As is described hereinafter, it is a feature of embodiments of the invention that a user configuring a CHUMBY™ device via an interface provided by the CHUMBY™ service provider may “drag and drop” icons representative of various widgets onto a rectangular or other portion of the interface representative of the screen of the CHUMBY™ device being configured. Alternatively, a user may select textual and/or graphical representations of widgets and select a button or other graphical representation of a user interface (UI) control to “add” the widget to the CHUMBY™ device being configured. In these ways the “layout” of the screen of the CHUMBY™ device may be remotely configured by the owner of the device. Although each CHUMBY™ device will preferably be capable of being configured in this manner, in certain embodiments each may also come “loaded” with a default set of widgets (e.g., an “alarm clock” widget) disposed to be executed by the CHUMBY™ device upon its registration with the CHUMBY™ service provider. Once a CHUMBY™ device has been configured (i.e., with either a “default” or user-specified configuration), it may execute the widgets defined by the configuration without user intervention. Alternatively, users may opt to “stay” on a given widget by explicitly instantiating the system interface on the device and selecting a “stay” UI control. If a user has explicitly selected a widget to “stay”, the sequential execution of widgets can be continued by terminating the “stay” command via the system interface. If a user interacts with a widget which presents user interface controls to the user through one of a number of alternative input methods, such as via a touchscreen or accelerometer, the currently active widget will continue to execute on the device until some timeout period expires following the cessation of user interaction with the widget.
The configuration of a CHUMBY™ device may also specify the events or conditions under which the sequence of execution of widgets is to be altered or interrupted, and allows certain widgets to be accorded the highest available priority with respect to execution. For example, an “alarm clock” widget could be granted such priority in order to ensure that its alarm function would not be prevented from being actuated at the scheduled time due to contemporaneous execution of another widget. In one embodiment the Web interface provided by the CHUMBY™ service provider is in the form of a “timeline” enabling the sequence of execution of the widgets associated with a given CHUMBY™ device to be controlled in an intuitive manner. In an exemplary implementation the timeline defines the order in which the widgets are to be played in a constantly repeating sequence; that is, the timeline is representative of the complete set of widgets played by a given CHUMBY™ device as well as their relative order and duration of execution. However, certain widgets (e.g., the “alarm clock” widget) can be specified to be actuated at a given time by appropriately setting the applicable configuration element of such widgets.
Although in exemplary embodiments it is not contemplated that more than a single “content-related” widget be operative at any given time, a system configuration widget may be utilized to run concurrently with each such content-related widget in order to, for example, control the relative priority of execution of such content-related widgets and system settings such as loudness, brightness, navigation, and the like.
In one embodiment CHUMBY™ devices are each capable of wireless communication in accordance with an accepted wireless networking standard, such as the 802.11b or 802.11g standard. Accordingly, in homes or other environments containing one or more wireless access points, multiple CHUMBY™ devices may be distributed throughout the coverage area of the access points. Alternatively, a CHUMBY™ device may use a wired connection as a backup to, or in lieu of, a wireless connection to the extent convenient or necessary.
Among the features of the invention is the capability of the interface presented by each CHUMBY™ device to change in accordance with the nature of the widget currently being executed by the device. For example, a “clock radio” widget could be employed to produce audio and visual imagery consistent with a conventional alarm clock at an appointed time in the morning. In exemplary embodiments the clock radio widget would allow for the selection of a standard “wake up” chime or choice of several different audio programs. Later in the day the device interface could be devoted to a rotating selection of several standard information screens such as news headlines, local weather, sports scores, stock market updates, horoscope and the like.
In accordance with another aspect of the invention, users of CHUMBY™ devices may optionally participate in a “CHUMBY™ Network” along with other users by logging on to a Web site (e.g., www.chumby.com) hosted by the CHUMBY™ service provider. At this site (also referred to hereinafter as the “CHUMBY™ site”) a user will be able to register with the CHUMBY™ Network and access services enabling the basic capabilities of the user's CHUMBY™ device. Basic capabilities may comprise, for example, the opportunity to send/receive widgets and other content to/from other CHUMBY™ users, for improved personalization of the device's generic information features, more detailed alarm-setting capabilities, and better selection and configuration of audio capabilities.
Registration with the CHUMBY™ Network, which would potentially require payment of a periodic subscription fee, enables members of the Network to access a wide array of widgets. It is contemplated that certain of such widgets would be developed by the entity operating the CHUMBY™ Network while other widgets would be developed by independent developers. In addition, members of the “CHUMBY™ Network would also be able to communicate with the CHUMBY™ devices of other members, provided that permission for such communication has been authorized by the other members. Such communication could entail, for example, the sending of a widget and corresponding data from the CHUMBY™ service provider to a member of the CHUMBY™ Network (the “receiving member”) in response to a request sent to the CHUMBY™ service provider by another member (the “sending member”). For example, a sending member could, after receiving permission from a receiving member, request the CHUMBY™ service provider to send a “photo-viewer” widget to the receiving member. In addition, the sending member could specify that a link be established between the photo-viewer widget and pictures uploaded by the sending member to the CHUMBY™ service provider. In this way the receiving member could, without any effort other than providing authorization to the sending member, enable their CHUMBY™ device to essentially automatically receive and display a sequence of photos provided by the sending member. Similarly, while traveling a sending member could send a personalized “wake up” message to the CHUMBY™ device of a consenting receiving member. Finally, a sending member could send widgets to a group of receiving members included on a “buddy list” of the sending member, which could be established after the receipt of suitable permissions from those proposed to be included on the list.
In an exemplary embodiment members of the CHUMBY™ Network are enabled to completely configure, through any Web browser, their respective CHUMBY™ devices by specifying a set of “premium” widget programs or content to play or be shown rotationally (or in some other user-defined sequence) on their respective CHUMBY™ devices. Such premium widgets and content may include, for example, webcam shots, RSS readers, filtered news reports, personalized stock performance data, short animations or movies, podcasts or audio files to function as the audio sources for alarms or reminders scheduled to be triggered at different times throughout the day.
As is discussed further below, one exemplary implementation of a CHUMBY™ device is comprised of a malleable housing attached to a rigid “core” structure supporting a display screen and the electrical components of the device. The malleable housing would generally encompass all of the electrical components of the CHUMBY™ device, and will preferably be filled with an appropriate material or otherwise constructed to enable it to be “squeezed” or otherwise deformed by a user. Moreover, the core structure is designed to be capable of being removed from the housing and mated in to a different housing. A set of “squeeze sensors” are enclosed by the malleable housing in order to permit the detection of such a squeezing or similar action by a user. In this way a user is afforded the opportunity of conveying information through physical deformation of the CHUMBY™ device in addition to the more conventional textual and other modes of communication facilitated by the display screen. For example, in one exemplary system a user could initiate the conveying of a “hug” to another user by squeezing the housing of the user's CHUMBY™ device in a particular manner. The electrical signals generated by the sensor array in response to this squeeze would be appropriately interpreted and the user's CHUMBY™ device would communicate, via the CHUMBY™ service provider, a “hug” message to the intended recipient user. At this point the recipient's CHUMBY™ device could register receipt of the hug message by, for example, illuminating an indicator light or sending a message to the display of the device. Significantly, the CHUMBY™ device is not limited to an implementation in a malleable housing; all of the features associated with such a malleable housing may be emulated using a rigid housing in combination with alternative sensors (e.g., force-sensitive or virtually emulated sensors).
Referring again to
In the exemplary embodiment a configuration window may be utilized to configure one or more CHUMBY™ devices 102 consistent with the permissions granted by the users of such devices 102. In addition, a user of a given CHUMBY™ device 102 may elect to have the interface of the device 102 “mirror” or otherwise replicate that of another device 102 subject to the requisite permissions being granted. Similarly, one or more CHUMBY™ devices 102 may be configured to mirror the interface for a “virtual” CHUMBY™ device (or vice-versa) defined via a configuration window.
Different users of a given CHUMBY™ device 102 may be accorded different roles or privileges in configuring the device 102. For example, user-granted supervisory privileges could be given the authority to filter or monitor the widgets or content sent to the CHUMBY™ device 102. This would enable, for example, parents to manage and/or monitor the widgets and content executed and displayed by the one or more CHUMBY™ devices 102 used by their children. Moreover, administrators of the system 100 would typically possess an elevated level of privilege relative to users of CHUMBY™ devices 102 within the system 100. Also, if a specific widget performs functions requiring communication with a web site controlled by a third party in order to access content, the developer of the widget may create a hierarchical user model to regulate such access (and perhaps the functions of the widget).
Attention is now directed to
Turning now to
The device may or may not include a Security Module (not shown) If included, the Security Module serves to store secrets and compute authentication algorithms in a fashion that fully isolates core security routines from otherwise unsecured code running on CPU 302. The secret storage and authentication capability may or may not be used by the client-server communication protocol to enable authenticated and encrypted communication capabilities for, among other things, financial transactions. The Security Module is initialized in such a way that there is no default mapping of the secrets contained within the module versus the identity of the hardware of the user. Furthermore, the secrets are revocable and a routine may exist for generating new secrets based upon a master secret that is never associated with a specific user's profile. This enables opt-in policies for privacy and a limited ability to revoke identity information, barring forensic network analysis, thereby enabling anonymity as well. The anonymous trust network can be extended with a variety of client-server protocols to enable a wide range of anonymous transactions, including but not limited to cash and content transactions.
As shown, software comprising widgets 350 or other applications received from the service provider 106 are stored in memory 310 and loaded into SDRAM 306 or non-volatile memory 310 for execution by the CPU 302. In one embodiment widgets are downloaded from the service provider 106 to CHUMBY™ devices in the format of a “Adobe Flash” file, also referred to as a “Flash movie”. As is known by those skilled in the art, Flash movies are usually accorded a “.swf” file extension and may be played by a Flash Player developed and distributed by Adobe Systems. Accordingly, the memory 310 also includes a Flash Player 360 as well as a copy of the operating system 364 executed by the CPU 302. In other embodiments widgets may be developed in accordance with other formats and played by players compatible with such other formats.
In the exemplary embodiment widgets are not “permanently” stored in memory 310 of CHUMBY™ devices. Rather, widgets are executed by the CPU and then either discarded or cached in temporary memory for future use. This enables widgets to be “pushed” from the service provider 106 as necessary to support the sequence of widget execution specified for each CHUMBY™ device. That is, the service provider 106 may operate to provide a “stream” of widgets to each CHUMBY™ device, where the widgets within each such stream are temporarily cached within the memory of the applicable CHUMBY™ device until their execution. This enables the service provider 106 and/or the creator of each widget program to maintain a degree of control over the content and behavior of each widget program, since each such program is typically not permanently downloaded (thereby facilitating modification) but is rather temporarily cached and erased after some predetermined time has passed or a memory use threshold has been reached.
The CHUMBY™ device also includes a liquid crystal display (LCD) 320 controlled by an LCD controller 322, which may or may not be integrated into the CPU 302. The display 320 visually renders iconic representations of the widget programs stored within the CHUMBY™ device and images generated in connection with the execution of such widgets by the CPU 302. In an exemplary implementation a touchscreen 330 overlays the LCD 320 and is responsive to a touchscreen controller 334. In one embodiment a user may induce the CHUMBY™ device to enter a “control panel mode” by touching the a sensor such as the squeeze sensor (not shown in
Selection of the night button 408 places the CHUMBY™ device into a “night mode” in which the screen is dimmed and a low intensity clock is displayed. Selection of the music button 410 instantiates another control panel screen which enables the user to interact with and control various continuous music sources, such as, for example, MP3 players, storage devices, and music services. Such sources may reside on either the local network or on the Internet. Selection of the settings button 412 instantiates another control panel screen which enables the user to configure various CHUMBY™ device settings, such as, for example, wireless network setup, speaker volume and touchscreen calibration. Selection of the clock button 414 instantiates another control panel screen which enables the user to configure the time, date and alarm functions of CHUMBY™ device. Selection of the delete button 418 deletes the currently displayed widget to be deleted, with user confirmation, from the current “channel”. Selection of the rate button 420 instantiates another control panel screen which enables the user to provide a rating on a fixed scale for the currently displayed widget. Selection of the send button icon 422 instantiates another control panel screen which displays a personalized list of other users of CHUMBY™ users to which it may be desired to send widgets or otherwise communicate. Selection of the stay button 424 toggles the “stay” state of the currently selected widget. When the “stay” state of a widget is selected, the widget plays continuously on the CHUMBY™ device. Selection of the right arrow button 426 or left arrow button 428 causes the CHUMBY™ device to display the previous or next widget in the channel, respectively. A user may, from any Web browser 122, access a Web page generated by the service provider 106 and designate a “favorite” widget. Alternatively, a user may press a virtual, touchscreen-based button on his or her CHUMBY™ device 102 to designate the current widget as the new “favorite” widget. When the user then selects the heart-shaped icon (not shown in
Referring again to
In certain embodiments a physical button element (not shown) may be provided proximate the LCD screen 320 to enable navigation through menus and the like presented by the LCD screen 320. In one implementation this button element is cross-shaped in order to facilitate two-dimensional navigation, and may further include a smaller, dedicated button (e.g., in the center of the cross) associated with a specific widget (e.g., clock widget). Pressing this dedicated widget would interrupt the operation of all other widgets.
In implementations in which two-dimensional navigation through the user interface of the CHUMBY™ device is supported, users may be provided with the ability to navigate forward and back in the configured widget timeline. Similarly, users may navigate up and down a stack of related widgets. This function depends on the implementation of the concept of widget categories—i.e., associating widgets into logical categories that can be displayed sequentially, if configured to be displayed. An example of a category could be “News”. Widgets included within this category could include, for example, a local news widget, a sports news widget, an entertainment news widget, a business news widget, and the like. For each category, there would be a default widget, which is designated by the user on the CHUMBY™ web site for each category selected to be displayed by the user's CHUMBY™ device.
If more than one widget in a category is selected, then the widgets are conceptually “stacked” with the default widget being:
on the top of the stack; and
the widget that is displayed as the CHUMBY™ device automatically cycles through configured widgets.
If a widget for a given category (e.g., “News”) is displayed and there exist additional widgets in the category which are also configured for display, then in the exemplary embodiment these additional widgets are “stacked” below the displayed widget. In this case the user may take some predefined action with respect to the user's CHUMBY™ device (e.g., perhaps selecting a control on the touchscreen or accessing a function via the control panel, which is instantiated via actuating the squeeze sensor) in order to cause the next widget in the “stack” for that category to be displayed. The CHUMBY™ device may be configured such that taking further predefined actions of the same type will cause the widgets either above or below in the stack to be displayed, as designated by the user. The last widget that is displayed in the stack for the applicable category when the CHUMBY™ device cycles to the next widget category will be the widget displayed in the next cycle for the just exited category (e.g, News).
The tabular illustration below provides a conceptual layout of exemplary widget stacks in various categories:
The following provides a conceptual representation of the case in which the user has navigated into widget stacks for News, Entertainment and Sports:
In general, the electronics of each assembly are populated onto a printed circuit board, thereby forming a printed circuit board assembly (PCBA). The PCBA is integrated into a hard sub-frame made out of a typically stiff material, such as a plastic (ABS) or a metal (steel or aluminum). The integration of the sub-frame and PCBA is referred to an “electronics sub-assembly”.
Embodiments of the CHUMBY™ device may include one or more electronics sub-assemblies; an exemplary embodiment described herein employs three such sub-assemblies. One such sub-assembly is included within a core electronics unit of the CHUMBY™ device, and contains heat-generating electronics components, an LCD, and a microphone. Another such electronic sub-assembly comprises a WiFi riser containing a WiFi communications module. The third electronics sub-assembly included within the exemplary embodiment of the CHUMBY™ device comprises a “daughtercard sub-assembly”. The daughtercard contains a plurality of external connectors (e.g., USB connectors) and a set of audio transducers. In the exemplary embodiment a mechanical switch is grafted onto the daughtercard sub-assembly facilitates the “squeeze sensing” described below. An accelerometer may also be included upon the daughtercard sub-assembly.
The general subdivision into these three sub-assemblies confers several benefits. By confining the heat generating components to the core electronics unit and WiFi riser, a more cost-effective heat path may be engineered. By confining the connectors and large transducers to the daughtercard, logistical advantages may be conferred to the supply chain. This may add a new level of rapid reconfigurability of the CHUMBY™ device for end user customization. By bridging between the sub-assemblies with flexible connectors, the CHUMBY™ device retains a soft and flexible feel.
Attention is now directed to
In one embodiment the frame 504 is composed of Santoprene™ or Texin, a soft, flexible, tactile, rubber-like material similar to TPE (thermo plastic elastomer). In another embodiment, the frame 504 is composed of a very low durometer PVC (Polyvinyl Chloride). The exact frame composition will generally balance considerations of flexibility, feel, look, and manufacturing properties, namely, the ability to be sewn and to have items tacked onto the side with adhesive to improve production tolerances. The frame 504 provides structure and form to the housing 502 and allows the core electronics unit 512 to be replaced and inserted. The frame 504 will generally be manufactured in a relatively flattened configuration and then manually flexed or curved and stitched to the fabric or other soft material when assembling the housing 502 of the CHUMBY™ device. In another embodiment, the CHUMBY™ frame, fabric, or a combination thereof is created out of molded EVA (Ethylene Vinyl Acetate) foam. The molding process renders a slightly different feel but generally provides greater fidelity to CAD-related artwork.
Turning now to
The division of the circuitry into a core board with greater complexity and cost and a daughtercard which breaks out many of the peripheral connections and features is a significant feature of the design of exemplary embodiments of the CHUMBY™ device. So segregating the design enables quicker adaptation to market and product changes, since the most volatile components of a system are often “on the edge”. The segregation of the core and the peripherals in this manner also provides a key benefit, in that the peripheral card can be customized at a lower cost, which helps enable the growth of an ecosystem of accessories and custom housings around the CHUMBY™ device.
The core electronics unit 512 will generally include, for example, a main circuit board onto which are populated a plurality of electronic components. The main circuit board will generally then be integrated into a hard sub-frame made of a rigid material such as, for example, stiff plastic or metal, thereby yielding an electronics sub-assembly. The core electronics unit 512 will also typically include an LCD display, touchscreen, ambient light sensor, microphone, USB WiFi dongle 610, backup battery 620, and any number of RF shields. This core module is designed to be removable from the frame by the user of the CHUMBY™ device. It is typically connected into the housing CHUMBY™ by the Chumbilical™ connector 2910.
The WiFi dongle 610 is connected to the WiFi riser (not shown) of the core electronics unit and facilitates WiFi wireless networking.
The backup battery 620 may be realized using, for example, a standard 9V alkaline, and is used to provide backup/supplemental power to the CHUMBY™ device in the event of failure of the primary power supply. In one embodiment, the backup battery 620 is mounted onto an RF shield positioned on a back side of the core electronics unit 512 and is intended to be replaceable by the user. In another embodiment, the battery 620 is contained in the soft housing of the CHUMBY™ device and is accessible via a velcro-sealed hole in the exterior material for user service.
In the exemplary embodiment the daughtercard 640 provides connectors available to the user, including power input, headphone output, and external USB-style connectors for future accessories and/or facilitating device upgrades. The daughtercard sub-assembly 640 is clamped to the fabric in between the daughtercard sub-assembly front and rear bezel components 514, which are made of rigid ABS-type plastic. The daughtercard sub-assembly connects to the core electronics 512 via the Chumbilical™ 2910.
In the exemplary embodiment the CHUMBY™ device includes a pair of internally-mounted speakers 630 to provide stereo sound. In one embodiment, the speakers 630 are held in place using square pouches sewn into the interior of the unit. The pouches each have a small drawstring to keep the speakers 630 in a relatively fixed position within the interior of the CHUMBY™ device. In another embodiment, the speakers are retained in the rear bezel molding. Both speakers 630 connect to the daughtercard sub-assembly 640.
As is discussed below, the squeeze sensor 650 may be implemented in a variety of different ways to facilitate sensing of “squeezing” of the CHUMBY™ device. The squeeze sensor 650 is typically connected to the daughtercard sub-assembly 640 and in one particular embodiment comprises a flexible resistive element which varies in resistance based upon the angle of flex of the sensor. Alternatively, the squeeze sensor 650 may be comprised of a canonical snap action switch with a lever protruding into the body of the CHUMBY™ device and buffered by the surrounding fill material to give an overall soft feel. Accordingly, the squeeze sensor 650 is capable of detecting physical “squeezing” of the soft housing of the CHUMBY™ device. Signals from the squeeze sensor 650 are processed (e.g., by the core electronics module 512 or dedicated electronic circuitry) and generally will precipitate performance a defined action, which may be dependent upon characteristics of the currently active widget. The squeeze sensor 650 connects to the daughtercard sub-assembly 640. The squeeze sensor 650 will generally be attached to the inside of the CHUMBY™ bag and oriented parallel to the vertical access of the CHUMBY™ device. In other embodiments, one or more displacement sensors may be used to effect the same function.
The squeeze sensor 650 may be implemented in a variety of different forms to accomplish “squeeze sensing” within a CHUMBY™ device:
Mechanical sensor: As mentioned above, a mechanical switch, such as a “snap action” switch, may be mounted with its actuator lever curled over so that it does not catch on any of the internal fabric seams. Soft fill may be packed between the lever and the bag surface so as to spread the force of the squeeze around, thereby increasing the effective active area of the snap action switch. Soft fill may also be packed between the lever and the switch so as to provide extra restoring force so that the switch does not become stuck in one position.
Force or bend sensitive sensor: A strip, such as a resistive bend sensor, or a force sensor consisting of a resistive material, a spacer, and intercalated electrodes, may be adhered or sewn into the fabric. The deformation of the fabric modulates the resistance of these sensors, which could then be post-processed by the electronics in the bag into a bend signal.
Field sensor: A capacitive field sensor may be used, which creates a sensing field that extends up to the edge of the bag. When the bag is squeezed, the deformation and presence of the fingers will change the dielectric properties of the air within the bag. This change in dielectric property can be detected using a number of techniques, including but not limited to the shift in frequency of a resonant tank.
Acceleration sensor: An accelerometer inside the bag may be used to detect the signature of a deformation event based upon how the sensor moves inside the bag. A set of advanced signal identification primitives may be required, which may take the form of kalman filters, matched filters, and/or hidden markov estimators.
Fabrication of CHUMBY™ Device
As is described hereinafter, a number of process innovations have been developed to address a number of issues pertinent to fabrication of exemplary embodiments of the CHUMBY™ device. For example, challenges exist in ensuring that the soft housing retain each electronics sub-assembly; that is, ensuring that such sub-assemblies remain appropriately positioned within, and do not fall out of, the soft housing of the CHUMBY™ device. In particular, it will generally be desired that the core electronics unit be accessible with a small amount of effort on the part of the end user. A number of methods may be used to ensure a solid mating between the core electronics unit and the soft frame:
First, a plastic lip may be attached to an opening defined by the soft housing in the manner described below. The lip is preferably configured to have a smaller opening than the size of the core electronics sub-assembly. This difference in diameter or relevant dimension prevents the core from easily falling out of the plastic lip.
Second, the soft housing may internally include a set of buttresses that press against the core electronics sub-assembly to keep the housing from being easily pushed inward. The buttresses may take the form of a structural foam or of a rigid mechanical piece attached to the housing.
Third, the lip may have a set of friction-locking points, thus enabling it to engage into the core electronics sub-assembly through mating friction-lock points.
Fourth, the lip and core electronics sub-assembly may be glued together using a variety of adhesives. Using a brittle drying adhesive (such as a cyanoacrylate) allows the seal to be broken with minimal cosmetic impact.
In addition, the lip of the soft housing may be engineered using a soft but semi-tacky plastic, such as TPE, which inherently provides friction.
With respect to mating of the bezel of the daughtercard sub-assembly to the soft housing, it will typically be desired that the sub-assembly be mounted in place without any visible gapping so as to create a “seamless” look with respect to the remainder of the soft housing. A number of methods may be employed to ensure such a seamless mating:
First, an overmolded soft plastic lip (such as a TPE compound) can be applied to the plastic edge of the bezel for the daughtercard sub-assembly to facilitate blending.
Second, a viscous or semi-solid adhesive (such as VHB) can be applied to the daughtercard bezel prior to mounting to assist with minimizing gapping.
Third, a jig-shaped element may be used to hold the bezel component so as to facilitate alignment of the applicable components.
Fourth, a set of screw holes may be made in the fabric of the soft housing in alignment with mating screw-through pegs in the daughtercard bezel to facilitate both alignment and retention of the fabric.
Fifth, a friction-fit rim consisting of an exterior piece sandwiching an interior piece may be used to enhance the snugness of the seam between the soft housing and the daughtercard bezel.
In exemplary embodiments of the CHUMBY™ device a number of approaches may be used during the fabrication process to reduce the buildup of within the soft housing during operation of the CHUMBY™ device. Since in certain embodiment a CHUMBY™ device may gain its shape and resilience due to air trapped between the fibers of a compound similar to polyfill, the fill material and soft housing collectively act as an insulator around the various electronics sub-assemblies. Strategies for mitigating this potential insulating effect are described below.
One heat dissipation strategy involves filling the soft housing of the CHUMBY™ device with thermally-conductive materials. The materials may be dispersed in whole or in part through the soft fill material interposed between the electronics sub-assemblies and the soft housing. Such thermally-conductive materials may be composed of, for example, hollow aluminum beads or pellets, or plastics having relatively good thermal conduction characteristics. Another embodiment uses a thermally-conductive gel material to conduct the heat from the core electronics sub-assembly to the surface of the soft housing. Alternatively, a heat pipe may be used to conduct heat to a metal plate glued to the surface of the soft housing. Such approaches may advantageously leverage a large surface area and utilize relatively thin fabric material for the soft housing so as to minimize overall heat retention.
Heat dissipation may also be facilitated by “stacking” the various electronic sub-assemblies and other components in such a way that a low-thermal resistance path exists from each heat-generating component within the device to one of the solid structures facing exterior to the CHUMBY™ device (e.g., the daughtercard bezel or LCD display). In this embodiment such solid structures effectively function as heats sinks. Each low-thermal resistance path may be completed by interposing a thermal compound (e.g., in the form of soft, gel-like gap filling pads) between the heat generating electronics sub-assemblies and the externally facing solid structure. For example, in one embodiment the LCD display is held in place with an aluminum heat spreader plate, and a thermal compound is applied between the heat spreader and the LCD. In addition, the PCB of the core electronics sub-assembly may contain thermal vias and copper planes to enhance heat flow.
When the WiFi module is mounted directly to the PCB of the core electronics module, heat conduction may be enhanced using positioning a soft gel-like gap filling between the WiFi module to this PCB and ultimately through the LCD display to the ambient air. In another embodiment, the WiFi module is placed on a WiFi riser in order to enable generation of an improved antenna pattern. In this embodiment the WiFi module is positioned such that a suitably low-resistance thermal path is established between the module and the PCB of the core electronics module through any of the metal connectors or devices exposed on the PCB.
Assembling pieces of a soft, flexible material into the soft housing of CHUMBY™ device poses a number of challenges. One exemplary approach involves first sewing the pieces of flexible material inside out and then “turning” the resultant aggregation into its final bag-like configuration for mating (e.g., sewing) to the flexible frame 504. A number of difficulties which may be potentially encountered during this type manufacturing process and possible resolutions to such difficulties are described below.
Binding of the flexible frame to the sewing machine—In one approach a spray-on lubricant may be applied to a back of the flexible frame 504 to prevent binding of the soft housing to the foot of a sewing machine used to attach the soft housing to the frame 504. Such binding may also be reduced by laminating a piece of smooth paper to the back of the frame 504. Another process improvement that may be employed in combination with any or all of the above is to use a post-style or anvil-style sewing machine rather than a flatbed machine.
Misalignment due to mismatch of fabric and plastic durometer—As the sewing machine feeds the interface between the frame 504 and the fabric of the soft housing, the fabric will tend to stretch more and faster than the plastic frame 504. This may be compensated for by pre-distorting the fabric pattern by an amount matching the amount of distortion introduced by the sewing machine feed.
Misalignment due to operator error—Mismatch of the fabric of the soft housing and the frame 504 may occur due to the compound curves involved in realizing exemplary embodiments of the CHUMBY™ device, thereby making visual alignment difficult. Such mismatch may be reduced by integrating notches, marks, and dots into the plastic frame 504 and flat pattern to act as guides for the operator of the sewing machine.
Fabric puckering—Once a seam is created between the frame 504 and the fabric material of the soft housing, the fabric will tend to pucker away from the seam due to the fabric crushing in the vicinity of the seam. This may be compensated for by gluing the fabric onto the frame 504 prior to sewing. The glue acts both as a scaffolding to hold the fabric in place and to prevent the fabric from lifting off the surface of the frame 504.
Edge finishing—It is anticipated that small errors in sewing will tend to be more apparent or otherwise noticeable if the edges of the fabric of the soft housing are rough. This degradation in appearance may be addressed by treating the edges of the fabric to make them appear finished. The specific process employed depends upon the type of fabric material used. For example, in exemplary embodiments which use leather as the fabric material for the soft housing, the edges may be painted. When woven synthetics are used as the fabric material, the edges may first be heat-treated (either with an open flame or a heated metal die). In particular, when using synthetic fabrics for the soft housing a heated metal die may be utilized create a melted emboss pattern around the area of the die used for cutting the fabric. The melted emboss pattern will act to bind the fibers together and create a finished looking edge. For natural fabrics, the edges may be painted, folded under, or have sewing tape applied.
Height matching—In exemplary embodiments the plastics or other substances forming the frame 504 are pressed in high-precision molds; in contrast, the fabric materials used for the soft housing are the products of imprecise processes. Mismatch in height between the two can create objectionable visual artifacts. When leather is used as the fabric material, these artifacts may be ameliorated by skiving the leather so as to control its height prior to sewing to the frame 504. Also, the plastics or other materials used for the frame 504 will generally be molded such that they rise above the height of the finished leather over anticipated manufacturing tolerances. This reduces the visual impact of any imperfections, particularly when the device is viewed from “head-on”.
The process of initially integrating multiple pieces of flexible material into the soft prior to attachment to the frame 504 also poses a number of challenges. One exemplary process pertinent to a soft housing comprised of leather is described below.
First, the soft housing is assembled with the four leather panels, each of which forms one of the sides of the soft housing. When joining these seams, the leather is flipped over, glued, and pounded flat so as to reduce the profile and puckering of the seams when viewed from the front.
The leather has its thickness skived, at least in the area of any seam, so as to reduce puckering in the area of the seam.
The back of the soft housing is attached at the last stage of the process, and then the device is turned inside out.
In another embodiment, the leather seams are given excess length, and the material is sewn back upon itself to create a triple-stitch.
In other embodiments darts may be used to relieve stress around the curved edges of the soft housing. However, the use of darts may adversely affect the aesthetics of the device. Accordingly, in yet another embodiment a modified flat pattern having sufficient tolerance to handle any stresses that build up around such curved edges is utilized.
Due to the stresses that are stored in the flexible frame 504 and fabric housing, exemplary embodiments of the CHUMBY™ device may develop a permanent, assymetric bias in shape. The following techniques may be applied to limit the impact of these stresses.
First, the effects of friction at the interface between the sewing machine and the materials being sewn may be reduced in the manner described above.
Second, a hot melt may be applied to the frame 504 after the CHUMBY™ device has been assembled. The hot melt is applied on a shaped jig such that the when the hot melt cures it forces the device into a prescribed shape.
A stiffer fabric may be laminated to the back of soft fabrics used in the process. Although not visible from exterior to the CHUMBY™ device, the stiffness allows the natural shape of the fabric (as embodied by the flat pattern) to dominate the forces built into the stitch seams between the frame 504 and the fabric.
Natural fabrics, such as leather, contain defects that can impact the yield of the process. During the die cutting phase, coarser pieces of leather may be cut using the pattern for the bottom and back pieces, so as to lessen the visual impact of these pieces while increasing the overall usage of the leather hide.
The material selection for the frame 504 plays a large role in the manufacturability of the soft housing. The soft frame 504 will preferably comprise a material which is flexible yet does not stretch easily. It will typically be sufficiently soft to permit a sewing needle to penetrate without breaking. One embodiment uses a TPU type of plastic to implement the frame 504. This type of plastic has the advantage that the soft housing may be attached to using glue, but is relatively hard and sewing needles may have trouble penetrating its surface. Another embodiment uses a TPE type of plastic, which is flexible, does not stretch easily, and may be easily penetrated by a needle. However, it is difficult to induce adherence to the surface of TPE. Another embodiment uses a PVC/PU type of plastic, which is flexible, admits the application of glue, and is soft enough for a needle to easily penetrate.
In another embodiment, an EVA foam is used for both the frame 504 and the fabric of the soft housing, or just for the frame. The EVA may be cast over a mold of the desired size and allowed to set. This process may advantageously produce an integrated frame and flexible housing without sewing, and is capable accurately realizing precise geometries. However, the use of an EVA foam for both the frame and housing of a CHUMBY™ device results in the device exhibiting a stiffer feel than other implementations.
Attention is now directed to the exemplary user interface screens of a CHUMBY™ device shown in
Although in certain embodiments the flexible or malleable housing of each CHUMBY™ device is intended to be essentially permanent and not replaced, in other embodiments such housings may comprise interchangeable “skins” designed to be easily detached and replaced at the discretion of the user. In such implementations the CHUMBY™ device may be configured to operate in accordance with various profiles depending upon the particular “skin” currently attached to the underlying hardware “core” of the device. Specifically, one or more sensors could be deployed upon the core of the CHUMBY™ device in order to read electronic identifiers embedded within the various skins disposed to be employed as the housing for the CHUMBY™ device. Each identifier could consist of a persistent (non-volatile) storage module containing unique identifying information, and would be physically configured so as to make electrical or radio contact with a corresponding sensor on the core of the CHUMBY™ device upon its skin becoming attached to the device core. The information read from such embedded identifiers could be used to inform the control system of the CHUMBY™ device of the identity of the skin currently enveloping the core of the device. Certain of such skins could, for example, include characteristics or features suggestive of various applications (e.g., “clock radio”, or “boom box”) or intended operating environments (e.g., “car”, “kitchen”, “workshop”). In another embodiment, an identifier can be written into non-volatile storage integral to a “skin”. When such “skin” is mated to the core, a wired connection is established between the non-volatile storage and the “core” in such a fashion that the identifier can be read directly from such.
Once a new skin has been attached or otherwise secured to the core of a CHUMBY™ device and the information from the embedded identifier has been read, the CHUMBY™ device may send a message to the service provider 106 indicative of its current skin (e.g., “skin #1”). In response, the service provider 106 may reply with a message instructing the CHUMBY™ device to utilize a particular profile (e.g., “profile #3”). It is contemplated that users may elect to define, via a Web browser 122 in communication with the service provider 106, profiles for each of their skins or simply utilize default profiles available from the service provider 106. Each profile could define, for example: (i) the widgets to be executed, (ii) the configuration to be used for executing the widgets, and (iii) the style and theme information (color schemes, control decorations, fonts, backgrounds, etc) utilized in presenting information via the LCD display 320.
CHUMBY™ Service Provider
Referring now to
As shown in
A user account server 714 maintains user account data in the system database 712 and provides authentication services to the other servers depicted in
One or more widget servers 718 are used to serve widgets to CHUMBY™ devices 102. Each widget server 718 will typically be sufficiently powerful to encrypt and sign widgets on demand. In addition, each server 718 will be configured to “store-and-forward” widgets being sent from one user to another.
The service provider 106 may also utilize a number of content servers 724 to provide information (e.g., new, weather, stock market information) to CHUMBY™ devices 102. In an exemplary embodiment all content servers function in a “pull” mode of operation; that is, CHUMBY™ device 102 polls the applicable content server 724 for new data on some periodic basis. Each response from a content server 724 preferably contains the schedule and frequency for subsequent polls. For example, a content server 724 disposed to provide stock market information can change the polling frequency to reflect whether or not the stock market is open. In other implementations a CHUMBY™ device 102 may be provided with the capability to change polling frequencies on the basis of, for example, environmental conditions (e.g., ambient room brightness) or other factors. One or more of the content servers 724 may be used for serving certain types of content uploaded by users for use on their own or other CHUMBY™ devices 102 and stored within the system database 712.
The CHUMBY™ service provider 106 will typically maintain a small number of load-balanced Network Time Protocol (NTP) servers 730 to provide time to CHUMBY™ devices 102. Each such server 730 will be configured to fetch their time from a “primary” NTP server, which fetches time from an upstream external public NTP server. If the primary NTP server 730 is inoperative, secondary NTP servers 730 will synchronize with a random selection of upstream servers. If all servers 730 are unavailable, a CHUMBY™ device 102 will either fetch time information from random public NTP servers or simply have its time adjusted via user input. In one embodiment each CHUMBY™ device 102 requests time upon connecting to the Internet and at jittered intervals thereafter, no more frequently than once a day.
Turning now to
In one embodiment the user registration and account creation process is initiated by a user through submission, via a Web browser 122, of a CHUMBY™ ID so as to identify a particular CHUMBY™ device 102. The act of creating a user account results in the construction of a default profile and one or more widget instances, each of which is automatically assigned to the CHUMBY™ device 102 (as identified by its CHUMBY™ ID) currently being registered. When a user adds a widget to the user's profile, the user is presented with a list of potential categories based upon information within the categories table. The user then selects a category from the categories table, and the user is presented with a list of widgets belonging to the chosen category. After the user chooses a widget, a widget instance is constructed and information is entered into the appropriate fields (e.g., profile id, widget id, index). The user is then presented a user interface via the Web browser 122 for editing the widget-specific parameters associated with the selected widget. In response to the user's parameter selections, records are appropriately updated in the parameters table.
In general, it is contemplated that embodiments of the invention will be implemented such that each CHUMBY™ device 102 will function as a client relative to various servers existing within the CHUMBY™ service provider 106. In these embodiments the CHUMBY™ devices 102 do not engage in direct communication with each other, but may do so via independent client-sever relationships established with the service provider 106. In this way the service provider 106 may facilitate the communication of a variety of different types of executable files (e.g., widgets or other computer programs, audio clips, short “Flash” movies, etc.) among CHUMBY™ devices 102, subject to the permission of the content owner and potential recipient. A user may designate that a widget or other content be sent to another user, or to the members of a user's “buddy list” or the like. This designation may be made via a Web browser 122 in communication with the service provider 106, or directly through the interface of the user's CHUMBY™ device 102.
In one embodiment executable files may be created by users of CHUMBY™ devices 102 or other third parties and loaded within the system database 712 after being approved by the entity operating the service provider 106. Once a widget or other executable file has been created and stored within the system database 712, it is made available for use by all those users of CHUMBY™ devices 102 that have been granted the requisite permission. Various schemes for granting permissions among and between users are possible. For example, one such type of permission could entail that any user X that is given permission by a user Y to send widgets to user Y's CHUMBY™ device may select any widget for which user X has usage rights and “send” such widget to user Y's CHUMBY™ device. Other restrictions could be placed on the transferability of widgets or other files from the service provider 106 to a CHUMBY™ device at the request of another user. For example, a user could be provided with the capability to “lock” certain widgets on only the user's CHUMBY™ device, or a CHUMBY™ device could reach a “full” state and advertise itself as being incapable of receiving any additional widgets.
Although widgets and other executable files could be transferred between the service provider 106 and CHUMBY™ devices 102 in a number of different formats, in one embodiment such transfers will occur in the Flash movie format (i.e., as .swf files, when not signed or encrypted). In this case the process for downloading widgets from the service provider 106 includes receiving a notification at a CHUMBY™ device 102 that a “new” widget is ready for downloading. Since in the exemplary embodiment each CHUMBY™ device 102 acts in a “pull” mode, each device 102 periodically polls the service provider and inquires as to whether any configuration changes are available to load. In the case in which a new widget is available for downloading, the CHUMBY™ device 102 will generally use standard HTTP (or HTTPS) protocols in downloading the applicable widget file.
Attention is now directed to
Each CHUMBY™ device 102 will have a unique GUID. In some embodiments, time codes will be represented in ISO-8061 format.
Requesting a CHUMBY™ Configuration
As shown in
The service provider 106 receives the request (stage 904), and retrieves the requested configuration from the system database 712 (stage 908). If the requested configuration exists, the service provider responds with an XML-based configuration; if not, the service provider 106 responds with an XML-based error message (stage 912). An exemplary XML-based response generated by the service provider 106 is given below:
Requesting a Profile
As shown in
The service provider 106 receives the request (stage 1004), and retrieves the requested profile from the system database 712 (stage 1008). If the requested profile exists, the service provider responds with an XML-based profile; if not, the service provider 106 responds with an XML-based error message (stage 1012). An exemplary XML-based response generated by the service provider 106 is given below:
Each Profile has a name, a description, a skin, and a list of “Widget Instances”. The Profile will be periodically refetched in order to reflect changes made by the owner, for instance, adding and removing Widget Instances. The Profile may also contain a “buddies_of” node, which contains information about users and profiles that have indicated the owner of the Profile to be a “buddy” in order to facilitate the sending of widget instances.
The CHUMBY™ device 102 processes each Widget Instance in turn, fetching the settings for each widget, and the Widget itself, and displays the Widget with the settings encapsulated by the Widget Instance.
A process similar to that described with reference to
An exemplary XML-based response corresponding to such a request which contains the updated profile could be provided by the service provider 106 as follows:
Widget Instance Upload/Download
Turning now to
As shown, the widget instance change operation is initiated when the CHUMBY™ device 102 sends an HTTP POST and an XML request to a widget instance object within the system database 712 maintained by the service provider 106 (stage 1102). This type of “UPLOAD” operation informs the service 106 that the parameters of a specific widget instance have been updated by the applicable user. As shown, the updated parameters are received by the service provider (stage 1104), and are attempted to be written to a corresponding widget instance object within the system database 712 (stage 1108). If this attempted write operation is unsuccessful (stage 1112), the service provider 106 responds with an error message that is processed by the requesting CHUMBY™ device 102 (stage 1120). If the write operation is successful, the newly updated widget instance are retrieved from the system database 712 (stage 1116) and sent to the applicable CHUMBY™ device 102 (stage 1120).
Once received, the widget instance is processed by the CHUMBY™ device 102 (stage 1124). In general, the processing of the parameters contained in a widget instance are dependent upon the characteristics of the particular widget. In certain cases the parameters may be sufficient to enable the widget to display information, while other widgets may use the parameters to fetch content from another service. As an example of the former, consider a “clock” widget capable of displaying information following receipt of a parameter indicating a time zone. In contrast, a “stock widget” may have stock symbols as parameters and use such symbols to fetch quote information.
Referring now to
The service provider 106 receives the request (stage 1204), and retrieves the requested parameters from the system database 712 (stage 1208). If the requested parameters exist, the service provider 106 responds with an XML-based widget instance message (stage 1212). Using the example of a weather widget, which utilizes a zip code to identify the location for which weather is to be retrieved, such a message could comprise:
The CHUMBY™ device 102 uses the GUID in the “widget” tag to fetch the information about the Widget to be displayed. Once the widget has been started, it is passed the name/value pairs in the “widget parameters” section, in order to customize the behavior of the widget. The “mode” tag indicates how long the widget is to be played. A value of “default” in the mode attribute indicates that the timing will be specified by the widget description, an attribute value of “timeout” will use the duration specified in the “time” attribute (in seconds), and the value of “cooperative” will display the widget until the user explicitly commands it to stop through a UI element, or the widget itself indicates that it wishes to discontinue operation. The presence of a “received” node indicates that the widget instance has been “sent” by a buddy. The value of the “accepted” attribute indicates whether or not the widget instance has been accepted by the recipient, which is done either through the web interface or through the UI of the device. The “forward” attribute indicates whether this widget instance can be sent on to another user.
If the requested parameters do not exist, a default widget instance is attempted to be retrieved from the system database 712 (stage 1224). If such a widget instance exists (stage 1228), the service provider 106 responds with an XML-based parameters message that is processed by the CHUMBY™ device 102 upon receipt (stage 1220). If such a default widget instance does not exist, an error message is returned to the CHUMBY™ device 102 (stage 1232).
Downloading a Widget
Referring now to
The service provider 106 receives the request (stage 2704), and attempts to retrieve the requested widget description from the system database 712 or other data source available to the service provider 106 (stage 2708). If the requested widget description is able to be retrieved, the service provider 106 responds with an XML-based widget description message; if not, the service provider 106 responds with an XML-based error message (stage 2712). An exemplary XML-based response generated by the service provider 106 is given below:
Once the requested widget description is received by the CHUMBY™ device 102, the CHUMBY™ device 102 uses the URL referencing the “movie” for the requested widget to download the movie (e.g., .swf) file from the service provider 106. The CHUMBY™ device 102 sends an HTTP GET request containing the GUID of the requested movie to a specific movie object within the system database 712 maintained by the service provider 106 (stage 1320). An example of such a request is provided below:
The service provider 106 receives the request (stage 2724), and attempts to retrieve the requested movie from the system database 712 or other data source available to the service provider 106 (stage 2728). If the requested movie is able to be retrieved, the service provider 106 responds with the .swf file which implements the movie; if not, the service provider 106 responds with an XML-based error message (stage 2732). Once the requested movie is received by the CHUMBY™ device 102, it is loaded by the Master Controller and queued for subsequent execution (stage 2736). If an error is instead received, it is processed accordingly (stage 2740).
Referring now to
The service provider 106 receives the request (stage 1304), and attempts to retrieve the requested content from the system database 712, internal content service, external content service or other data source available to the service provider 106 (stage 1308). If the requested content is able to be retrieved, the service provider 106 responds with an XML-based content message; if not, the service provider 106 responds with an XML-based error message (stage 1312). Once the requested content is received by the CHUMBY™ device 102, corresponding audiovisual output is generated by the device 102 for the benefit of its user (stage 1316). If an error is instead received, it is processed accordingly (stage 1320). An exemplary XML-based response generated by the service provider 106 is given below:
In the case where content is retrieved directly from an external content service provider (i.e., from other than the service provider 106), a series of web-based transactions (most likely HTTP and/or XML-based) defined by such content service provider will take place between the CHUMBY™ device 102 and such provider.
CHUMBY™ Security Protocol
CHUMBY™ devices 102 may optionally include a hardware security module, which in one implementation is accessed via a character driver interface in the operating system (“OS”) of the device 102. The module may or may not be installed. When the module is not installed, the OS preferably virtualizes the hardware security module by emulating it in software. While losing all the tamper-resistance benefits of a hardware module, this feature enables cost reduction savings while maintaining protocol interoperability with a secured system.
The hardware security module of a CHUMBY™ device 102 may be implemented in a number of ways. As an example, the hardware security module may be implemented using a monolithic security processor or a cryptographic Smart Card module. This module, or its emulated counterpart, is capable of at a minimum, the following operations: (1) storage of secret numbers in hardware; (2) the ability to compute public-key signatures; (3) the ability to compute one-way cryptographic hashes; and (4) the ability to generate trusted random numbers.
During the manufacturing process the hardware security module, or its emulated counterpart, is initialized with a set of secret numbers that are only known to the module and to the CHUMBY™ service provider 106. These secret numbers may or may not consist of public and private keys. If the numbers consist of public and private keys, then a mutual key-pair is stored by both the CHUMBY™ service provider 106 and the hardware module, along with a putative, insecure identifier number for the pair. Furthermore, these numbers are preferably not recorded by the CHUMBY™ service provider 106 in association with any other identifying information, such as the MAC address for the WLAN interface, or any other serial numbers that are stored in insecure memory for customer service purposes.
When the user or service wishes to initiate a strong authenticated transaction, the CHUMBY™ device 102 sends the putative insecure key-pair identifier to the service provider 106. The service provider 106 looks up the putative insecure key-pair identifier and issues a challenge to the hardware module, consisting of a random number In particular, the challenge is packetized and sent through the Internet to the CHUMBY™ device 102. The device 102 unpacks the challenge and passes it directly to the hardware module. The hardware module adds another random number to the packet and signs the pair of numbers, along with other transaction information (such as the version number of the protocol) with a private key that is only known to the CHUMBY cryptoprocessor. In addition, an “owner key” may optionally be encrypted to the server public key. Again, this message is packetized and transmitted by the device 102 to the service provider 106 over the Internet. Upon receipt, the service provider 106 verifies the signature of the packet using the device's public key, which was generated and recorded at the time of manufacture and indexed by the hash of the putative insecure key-pair identifier. The CHUMBY device is deemed authentic if the signature is correct and the signed packet contains the exact random number that was generated by the service provider in the first step of the challenge. The service provide 106 also decrypts the owner key, whose purpose is discussed in the next paragraph. At the conclusion of this transaction, the service provider 106 has authenticated the device 102, and can fall back to any number of session keys that can be either dynamically generated or statically stored for further secured transactions. Advantageously, this authentication transaction does not involve uniquely associating the hardware module with user information. Rather, the service provider 106 is simply aware of the existence of the approved hardware module and upon completion of the authentication transaction may safely trust the integrity of the secrets stored therein.
The owner key comprises a random number (or one of a set of random numbers) generated at the time of manufacture and stored only within the cryptographic processor. The owner key is transmitted to the server, encrypted using the server public key, and used as a shared secret to protect any other secrets (user passwords, credit card information, etc.) that may be stored on the server. Once a user decides they no longer wish to continue with the service, or desire to sell or transfer their CHUMBY™ device, or otherwise wish to revoke any secrets entrusted to the server, the user can instruct the cryptographic processor to delete the key from memory, thereby abolishing the server's ability to decrypt the secrets entrusted to it.
A user of the device 102 may opt-out of privacy mode and provide identifying information, as required by some billing services such as credit cards and banks. Optionally, an anonymous cash-based transaction network can be established where accounts are opened and managed only by secrets contained within the hardware module.
To enable limited revocation of user-identifying information, the specific embodiment of the master authentication protocol should operate on a set of clean-room servers with a multiplicity of connections that are trusted by the CHUMBY™ service provider 106, and authenticated session keys are then passed on laterally to the content servers. Thus, the anonymity of the master authentication key is nominally preserved, although it is possible to recreate and correlate transactions from forensic logs and transaction timings. The use of multiple servers and multiple connections, along with network routing randomization techniques, can be used to increase the anonymization resistance to forensic logging (cf. Tor network), but this configuration is in no way essential to the network's operation.
CHUMBY™ Device Calibration, Registration and Account Management
Attention is now directed to
In one embodiment a CHUMBY™ device downloads configuration information from the service provider 106 each time it is powered on or otherwise re-establishes communication with the service provider 106. However, a minimal amount of widget and configuration information may be locally stored on a CHUMBY™ device so that it may continue to function in the absence of network connectivity. For example, a clock widget may be permanently stored on a CHUMBY™ device so that its clock function could remain operational at all times. A CHUMBY™ device will typically include sufficient memory capacity to hold configuration information received from the service provider 106 for all of the widgets to be executed by the device, up to some reasonable number of widgets. If a user changes the configuration for a CHUMBY™ device through the Web site maintained by the service provider 106, a polling function implemented on the corresponding CHUMBY™ device will typically be used to “pull” the modified configuration information from the service provider 106. Alternatively, an operation may be manually initiated via the interface of the corresponding CHUMBY™ device in order to obtain this information (e.g., an “Update My CHUMBY™ Device Now” operation).
Turning now to
Wireless Base Station Selection
Referring now to
In one embodiment user accounts are configured to be capable of hosting and moderating sub-accounts.
Disabling a CHUMBY™ Device
Referring now to
Mirroring a CHUMBY™ Device
Widget Selection, Removal and Configuration
Attention is now directed to
Overview of Widget Management Process
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As shown in
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If the user decides to exit the process of adding widgets to the current configuration, the user may perform one of several actions, including, but not limited to: select another CHUMBY™ device to configure; navigate to another page on the CHUMBY™ site; log out from the CHUMBY™ site; or close the applicable browser window (stage 2316). If the user instead chooses to save the current widget configuration for the applicable CHUMBY™ device (stage 2350), the user selects a “Submit”, “Commit”, “Ok” or similar button to cause any changes made to be recorded in the system database 712 (stage 2354). After either saving the current widget configuration or electing to exit the process, the user may be directed to a predefined page (stage 2360).
If the user decides to exit the process of adding widgets to the current configuration, the user may perform one of several actions, including, but not limited to: select another channel to configure, as is illustrated by
Referring now to
Referring now to
In an exemplary embodiment the service provider 106 populates a corresponding widget and parameters tables within the system database in accordance with the user's parameter selections. In this regard the widget table may include an XML-based “param_desc_×ml” field containing instructions enabling the construction of associated records in parameters table. For example, for a “clock” widget the XML-based instructions could indicate that a time zone should be a valid parameter, and could also be utilized to create appropriate records in the parameters table.
Distribution of Electronic Greetings Among CHUMBY™ Devices
Users of CHUMBY™ devices will have the ability to send electronic greeting cards in the form of rich Flash animations. Upon visiting a predefined web site (e.g., ‘http://greetings.chumby.com’) and optionally being authenticated by presenting appropriate credentials, a user will be presented with a catalog of “CHUMBY™ Greetings”. In one embodiment access to certain “CHUMBY™ Greetings” may be dependent on membership status. Any authenticated user, irrespective of the number of registered CHUMBY™ devices, will have the permission to send CHUMBY™ Greetings to one or more arbitrary email addresses or, alternatively, one or more users registered with the CHUMBY™ network. If a visitor to the web site is aware of the globally and temporally unique email address of an existing CHUMBY™ device, the account name in which the CHUMBY™ device is registered, or other means of identifying individual CHUMBY™ devices, they may specify CHUMBY™ Greetings to be forwarded directly to such a device using the existing widget transfer infrastructure of the service provider 106. Upon receipt at the CHUMBY™ device, the transferred CHUMBY™ Greetings will be added to the channel or profile in which the recipient has designated for receipt of widgets or other delivered content. Once the widget has been delivered to a channel or profile, the recipient will have the option of accepting or rejecting the delivered content. In the event that a user accepts the CHUMBY™, the CHUMBY™ Greeting will be added to the recipient's widget slideshow rotation in accordance with the applicable profile of the device. In one example, a visitor to the web site may choose to assign a certain level of priority to a CHUMBY™ Greeting such that it may be displayed by the recipient CHUMBY™ device immediately following actuation of the device's alarm function. Alternatively, a priority assigned to a CHUMBY™ Greeting may define the placement of the CHUMBY™ Greeting in the recipient's widget rotation.
CHUMBY™ Greetings sent to email addresses that are not bound to physical CHUMBY™ devices will be forwarded as an SMTP email message. This message will originate from, for example, “firstname.lastname@example.org” (or a user supplied email address), and will contain a URL or hyperlink pointing to a temporary web page hosting the Flash movie comprising the CHUMBY™ Greeting in addition to an optional user-defined message. Authenticated users will have the ability to select one or more peers from their CHUMBY™ “Buddy List” as recipients of a preconfigured CHUMBY™ Greeting. In one embodiment of CHUMBY™ Greetings, a subscription may be required for access to certain features such as CHUMBY™ Greetings. In such an embodiment, users subscribing to the CHUMBY™ Network will have access to “premium” CHUMBY™ Greetings. In one embodiment, CHUMBY™ may wish to elect a “pay-per-view” model where the use of a “premium” CHUMBY™ Greetings may be charged as a micro-transaction. In one embodiment, CHUMBY™ Greeting recipients that are not bound to physical CHUMBY™ devices will be presented with an option to forward the CHUMBY™ Greeting to alternate email addresses or physical CHUMBY™ devices.
Content Transfer from Personal Communication Device to CHUMBY™ Device
In one embodiment the infrastructure of the CHUMBY™ service provider will support a service capable of receiving an email message from a mobile communication device (e.g., a cellular phone) containing text and/or an image. The email would be addressed to a given user (e.g., ‘user’@chumby.com) within the “chumby” domain; alternatively, a special email domain may be created for content from mobile devices in order to facilitate its detection (e.g., ‘user’@chumby-mobile.com).
Referring to the process flow diagram 3400 of
“Hotel” CHUMBY™ Device
Although it is contemplated that CHUMBY™ devices will often be utilized within private residential environments, in certain cases “generic” CHUMBY™ devices may be deployed in public or quasi-public spaces such as hotel lobbies, hotel rooms, or airports. In such cases a user would be permitted to “log-in” to a generic or multi-user CHUMBY™ device (i.e., a CHUMBY™ device not associated with a single user). Such log-in may be effected by the entry of a username/password combination into the generic CHUMBY™ device or through other conventional means of user identification (e.g., using “RFID” tags, USB Flash Storage devices, SIM cards or biometric techniques). Once entered, the log-in information is communicated from the generic CHUMBY™ device to the CHUMBY™ service provider. In response, the service provider sends a user-specific profile and related configuration information corresponding to the log-in information back to the generic CHUMBY™ device. In this way the interface of the generic CHUMBY™ device may be customized in accordance with the setting and preferences of multiple different users of the device. Once the power of the device is cycled or the device is otherwise rebooted, its behavior will revert to that of the “generic” CHUMBY™ device.
In certain embodiments profiles pertinent to various specialty interests or activities (e.g., sports, cooking) may be developed and maintained by the service provider 106 or other users of CHUMBY™ devices. Each such profile, or “channel”, could be subscribed to by interested users of CHUMBY™ devices. This may be considered a special case of mirroring to a “virtual” CHUMBY™ device as described above, but would further involve effort on the part of the “owners” of each channel to keep its widget set and other content updated. Channels could somewhat broadly focus upon a particular subject (e.g., recipes, football), or could be more specific in nature (e.g., vegetarian recipes, NFL football).
Pairing of CHUMBY™ Device and Wireless Handset
In addition to including Wi-Fi communication capabilities, in certain implementations CHUMBY™ devices may also be equipped with Bluetooth™ transceivers or the like to facilitate communication with similarly equipped wireless handsets, headsets, or other Bluetooth™-enabled devices. In such cases the CHUMBY™ device could execute a widget designed to use the Bluetooth™ transceiver to “pull” information from or alternately “push” information to the wireless handset via the Bluetooth™ link. Such an arrangement could be used to obtain information from or send information to the Bluetooth™ enabled device such as, for example, alarm settings, images, videos, calendar appointments, voice and other stored data (e.g., music, messages). In one embodiment, the CHUMBY™ device may be used as a Bluetooth enabled dialer and speakerphone accessory for mobile phones. In another embodiment, the CHUMBY™ device may communicate with portable Bluetooth™ enabled GPS devices and optionally render maps and navigation routes to the LCD 320.
Networked Home Entertainment Device
In certain embodiments a CHUMBY™ device may be capable of accessing a user's “home network” and identifying particular types of server infrastructure which may be present via multicast DNS, Universal Plug and Play, or other means. The CHUMBY™ device would then configure itself to act as a client to the detected server and participate in the network. Alternatively, the CHUMBY™ device could be configured to act as a peer to other devices connected to the home network. In one embodiment, the CHUMBY™ device may discover and connect to a media server running on the “home network” and stream audio and video feeds. In another embodiment, the CHUMBY™ device may discover and connect to a digital video recorder and provide scheduling and optionally stream audio and video data stored on the remote device. Some embodiments of the CHUMBY™ device may be equipped with an FM radio device that will allow the CHUMBY™ device to play audio from local FM radio stations.
The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the invention. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the invention. In other instances, well-known circuits and devices are shown in block diagram form in order to avoid unnecessary distraction from the underlying invention. Thus, the foregoing descriptions of specific embodiments of the present invention are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, obviously many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the following Claims and their equivalents define the scope of the invention.