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Publication numberUS20060236220 A1
Publication typeApplication
Application numberUS 11/379,180
Publication dateOct 19, 2006
Filing dateApr 18, 2006
Priority dateApr 18, 2005
Also published asEP1904933A2, EP1904933A4, US8861939, US20100195990, US20150030315, WO2006113742A2, WO2006113742A3
Publication number11379180, 379180, US 2006/0236220 A1, US 2006/236220 A1, US 20060236220 A1, US 20060236220A1, US 2006236220 A1, US 2006236220A1, US-A1-20060236220, US-A1-2006236220, US2006/0236220A1, US2006/236220A1, US20060236220 A1, US20060236220A1, US2006236220 A1, US2006236220A1
InventorsMatthew Jarman
Original AssigneeClearplay, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus, System and Method for Associating One or More Filter Files with a Particular Multimedia Presentation
US 20060236220 A1
Abstract
A method, apparatus, computer program product and computer accessible code configured to link or otherwise associate content filters with a multimedia presentation, e.g., a movie. The content filter data includes an identifier value with an aspect ratio identifier or as a function of an aspect ratio for a particular multimedia presentation associated with the filter information. In one implementation, association between a filter set and a multimedia presentation involves a filtering application that searches a particular multimedia presentation to locate aspect ratio information and further searches filter information for a matching aspect ratio identifier.
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Claims(25)
1. A computer program product comprising:
a computer useable medium and computer readable code embodied on the computer useable medium for identifying a multimedia presentation with an associated aspect ratio, the computer readable code comprising:
one or more filter files associated with the multimedia presentation, the filter files each identifying a portion of the multimedia presentation, each filter file further identifying a filtering action for the portion of the multimedia presentation; and
at least one data value configured to identify the aspect ratio of the multimedia presentation.
2. The computer program product of claim 1 wherein:
the aspect ratio of the multimedia presentation comprises a full screen aspect ratio and a widescreen aspect ratio.
3. The computer program product of claim 1 wherein:
the at least one data value comprises at least one data bit configured to identify the aspect ratio of the multimedia presentation.
4. The computer program product of claim 3 wherein:
the at least one data bit comprises a first data bit and a second data bit, wherein the first data bit and the second data bit are set to 0 to indicate the full screen aspect ratio.
5. The computer program product of claim 4 wherein:
the at least one data bit comprises a first data bit and a second data bit, wherein the first data bit and the second data bit are set to 1 to indicate the wide screen aspect ratio.
6. The computer program product of claim 3 wherein the first and second data bits are bits 6 and 7 of a particular 8-bit byte.
7. The computer program product of claim 1 wherein the computer readable medium comprises a DVD.
8. The computer program product of claim 1 wherein the multimedia presentation comprises a movie.
9. A computer data signal embodied in a transmission medium, comprising:
a code segment including one or more filters associated with a multimedia presentation, the filters each identifying a portion of the multimedia presentation, each filter further identifying a filtering action for the portion of the multimedia presentation; and
a code segment including at least one data value configured according to an aspect ratio of the multimedia presentation.
10. The computer data signal embodied in a transmission medium of claim 9 wherein:
the aspect ratio of the multimedia presentation comprises a full screen aspect ratio and a widescreen aspect ratio.
11. The computer data signal embodied in a transmission medium of claim 9 wherein:
the at least one data value comprises at least one data bit configured to identify the aspect ratio of the multimedia presentation.
12. The computer data signal embodied in a transmission medium of claim 11 wherein:
the at least one data bit comprises a first data bit and a second data bit, wherein the first data bit and the second data bit are set to 0 to indicate the full screen aspect ratio.
13. The computer data signal embodied in a transmission medium of claim 12 wherein:
the at least one data bit comprises a first data bit and a second data bit, wherein the first data bit and the second data bit are set to 1 to indicate the wide screen aspect ratio.
14. The computer data signal embodied in a transmission medium of 11 wherein the first and second data bits are bits 6 and 7 of a particular 8-bit byte.
15. A computer program product comprising:
at least one filter file means for triggering at least one filtering action of a portion of a particular multimedia presentation; and
means for associating an aspect ratio of a particular multimedia presentation with the means for triggering at least one filtering action.
16. A computer program product comprising:
a computer useable medium and computer readable code embodied on the computer useable medium for identifying a multimedia presentation with an associated aspect ratio, the computer readable code comprising:
one or more filter files associated with the multimedia presentation, the filter files each identifying a portion of the multimedia presentation, each filter file further identifying a filtering action for the portion of the multimedia presentation; and
at least one data value configured as a function of at least the aspect ratio of the multimedia presentation.
17. The computer program product of claim 16 wherein:
the aspect ratio of the multimedia presentation comprises a full screen aspect ratio and a widescreen aspect ratio.
18. The computer program product of claim 16 wherein:
the at least one data value comprises at least one data bit configured to identify the aspect ratio of the multimedia presentation.
19. The computer program product of claim 18 wherein:
the at least one data bit comprises a first data bit and a second data bit, wherein the first data bit and the second data bit are set to 0 to indicate the full screen aspect ratio.
20. The computer program product of claim 19 wherein:
the at least one data bit comprises a first data bit and a second data bit, wherein the first data bit and the second data bit are set to 1 to indicate the wide screen aspect ratio.
21. The computer program product of claim 18 wherein the first and second data bits are bits 6 and 7 of a particular 8-bit byte.
22. The computer program product of claim 16 wherein the computer useable medium comprises an optical disc.
23. The computer program product of claim 16 wherein the multimedia presentation comprises a movie.
24. A method for associating a multimedia presentation with content filter information comprising:
obtaining content filtering data corresponding with a particular multimedia presentation, the content filtering data including at least one multimedia identifier, the multimedia identifier including at least one data value corresponding to an aspect ratio for the multimedia presentation;
analyzing a multimedia presentation to determine an aspect ratio for the multimedia presentation;
comparing the aspect ratio for the multimedia presentation to the at least one multimedia identifier; and
applying the content filtering data to the multimedia presentation as function of the operation of comparing.
25. A multimedia player including a processor configured to perform the operations of claim 24.
Description
    CROSS-REFERENCE TO RELATED APPLICATIONS
  • [0001]
    The present application is a non-provisional application claiming priority to copending U.S. provisional application No. 60/672,914 titled “Apparatus, System, and Method for Associating One or More Filter Files with a Particular Multimedia Presentation,” filed Apr. 18, 2005, which is hereby incorporated by reference herein.
  • [0002]
    The present application is related to U.S. provisional application No. 60/763,525 titled “Filtering a Multimedia Presentation in a Video-on-Demand Environment,” filed Jan. 30, 2006, U.S. provisional application No. 60/785,547 titled “Synchronizing Filter Meta-Data With a Multimedia Presentation,” filed Mar. 24, 2006, U.S. non-provisional application Ser. No. 11/104,924 titled “Apparatus, System, and Method for Filtering Objectionable Portions of a Multimedia Presentation,” filed Apr. 12, 2005, U.S. non-provisional application Ser. No. 11/256,419 titled “Method and User Interface for Downloading Audio and Video Content Filters to a Media Player,” filed Oct. 20, 2005, U.S. patent application Ser. No. 11/327,103 titled “Media Player Configured to Receive Playback Filters from Alternative Storage Mediums,” filed Jan. 5, 2006, U.S. provisional application 60/620,902 titled “Method and User Interface for Downloading Audio and Video Content Filters to a Media Player” filed Oct. 20, 2004, U.S. provisional patent application No. 60/641,678 titled “Video Player Configured to Receive Playback Filters from Alternative Storage Medium” filed Jan. 5, 2005, U.S. application Ser. No. 09/694,873 titled “Multimedia Content Navigation and Playback,” filed Oct. 23, 2000, now U.S. Pat. No. 6,898,799, issued May 24, 2005, and U.S. application Ser. No. 09/695,102 titled “Delivery of Navigation Data for Playback of Audio and Video Content,” filed Oct. 23, 2000, now U.S. Pat. No. 6,889,383, issued May 3, 2005, the disclosure of each of the above-recited applications are hereby incorporated by reference herein. Appendix A, including 2 pages of program code, is included with the present non-provisional application and is hereby incorporated by reference herein.
  • FIELD OF THE INVENTION
  • [0003]
    Aspects of the present invention involve a system, method, and apparatus for associating a filter file or set of filter files with a particular multimedia presentation.
  • BACKGROUND
  • [0004]
    A multimedia presentation, such as audio provided on CD and a movie provided on DVD, may contain certain language, images, scenes, or other content, not suitable or considered objectionable by certain audiences. To address this concern, certain technologies have been developed to allow filtering, such as skipping or muting, various types of content. This technology allows, for example, the viewing of a movie originally containing more adult-oriented content by younger, less mature viewers. Generally, the filtering function is provided by a media content “filter” resident within the DVD player that specifically applies to a particular multimedia presentation. The filter, which is typically stored within a nonvolatile logic memory of the media player, such as flash memory, indicates which portions of the multimedia presentation are to be skipped, or which audio portions are to be muted, by the DVD player during playback. Typically, whether the filter is employed for a particular presentation of the multimedia may be determined by the user by way of a menu selection system provided by the media player. Further, different forms of objectionable content, such as profane language, sexually explicit content, and so on, may also be selectively filtered by way of the menu system. In some systems, the filtering system may be protected by way of a user-defined password so that those not privy to the password are unable to defeat the filtering mechanism.
  • [0005]
    Each filter specific to a particular presentation is typically produced at some point after a multimedia presentation has been released. Thus, for example, while some filters for preexisting movies may be pre-installed in the DVD player, the player normally also includes a method of accepting and storing new filters as they are produced. Typically, filters are installed by way of a CD, DVD, or other disc readable by the same memory reader of the DVD player that also reads the DVD or other storage medium having the multimedia presentation. Therefore, a user inserts the disc containing the filters of interest into the tray or slot normally employed for playback. The DVD player, recognizing the disc as one containing filters, installs the filters from the disc, possibly at the guidance of the user by way of the player menu system.
  • [0006]
    Besides use of multimedia title information and other multimedia presentation attributes, what is needed is a way to accurately associate a particular multimedia's filter set with the multimedia presentation, which may be in conjunction with employment of other attributes.
  • SUMMARY
  • [0007]
    One aspect of the present invention involves a computer program product comprising a computer useable medium and computer readable code embodied on the computer useable medium for identifying a multimedia presentation with an associated aspect ratio, the computer readable code comprising one or more filter files associated with the multimedia presentation, the filter files each identifying a portion of the multimedia presentation, each filter file further identifying a filtering action for the portion of the multimedia presentation. The computer readable code further involves at least one data value configured to identify the aspect ratio of the multimedia presentation.
  • [0008]
    Another aspect of the present invention involves a computer program product comprising a computer useable medium and computer readable code embodied on the computer useable medium for identifying a multimedia presentation with an associated aspect ratio, the computer readable code comprising one or more filter files associated with the multimedia presentation, the filter files each identifying a portion of the multimedia presentation, each filter file further identifying a filtering action for the portion of the multimedia presentation. The computer readable code further comprising at least one data value configured as a function of at least the aspect ratio of the multimedia presentation.
  • [0009]
    Another aspect of the present invention involves a method for associating a multimedia presentation with content filter information, the method comprising: obtaining content filtering data corresponding with a particular multimedia presentation, the content filtering data including at least one multimedia identifier, the multimedia identifier including at least one data value corresponding to an aspect ratio for the multimedia presentation. The method further involves analyzing a multimedia presentation to determine an aspect ratio for the multimedia presentation and comparing the aspect ratio for the multimedia presentation to the at least one multimedia identifier. Finally, the method involves applying the content filtering data to the multimedia presentation as function of the operation of comparing.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0010]
    FIG. 1 is a diagram of the format of one byte of a filter file multimedia media identifier using a full screen aspect ratio identifier, conforming to aspects of the present invention; and
  • [0011]
    FIG. 2 is a diagram of the format of one byte of a filter file multimedia identifier using a wide screen aspect ratio identifier, conforming to aspects of the present invention.
  • DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION
  • [0012]
    Aspects of the present invention involve a system, method, and apparatus for associating a filter file or set of filter files with a particular multimedia presentation based at least in part on aspect ratio information. Each multimedia presentation includes an identification of the aspect ratio or other video attribute, such as full screen or wide screen, for the multimedia presentation. Any filter file (or files) developed for the multimedia presentation includes coding with an identifier of the aspect ratio for the multimedia presentation. The term “filter file” or filter as used herein is meant to refer to an indicia of a portion of a multimedia presentation and an associated filtering action. The filtering action may involve some form of contact suppression, whether skipping, blurring, cropping, and/or muting portions of the multimedia presentation. The portion of the multimedia presentation subject to suppression may be identified by a start and end time code, by a time or location and offset value, and through other multimedia relative identification means that provide for accurate identification of some discrete portion of a multimedia presentation. One or more filter files for a particular multimedia presentation may be provided in a “filter table.” A filter file or filter table configured for a particular multimedia presentation also includes an identification of the aspect ratio for the particular multimedia presentation. The aspect ratio identifier provides a way to associate a particular filter file or table with a particular multimedia presentation. Other characteristics, besides the aspect ratio, may also be used, alone or in conjunction with the aspect ratio, to associate a particular filter table with a particular multimedia presentation.
  • [0013]
    The filter file or table may be used along with a system, apparatus, and method for a user to play a multimedia presentation, such as a movie provided on a DVD, a movie provided by way of a video-on-demand service, and other media types, coding arrangements, and distribution platforms, with objectionable types of scenes and language filtered (a “filtering application”). The filtering application monitors the playback of a multimedia presentation in comparison with one or more filter files, and filters the playback as a function of the filter files. As referenced above, filtering may involve some form of content suppression, such as muting objectionable language in a multimedia presentation, skipping past objectionable portions of a multimedia presentation as a function of the time of the objectionable language or video, modifying the presentation of a video image such as through cropping, or fading, or otherwise modifying playback to eliminate, reduce, or modify the objectionable language, images, or other content. Filtering may further extend to other content that may be provided in a multimedia presentation, including close captioning text, data links, program guide information, etc.
  • [0014]
    The filtering application monitors playback of the multimedia presentation and compares playback with one or more filter files. In one particular implementation, the filtering application monitors time codes of the multimedia presentation being played. It is also possible to monitor other indicia of the multimedia data read from the DVD, such as indicia of the physical location on a memory media from which the data was read. In one particular implementation, filter file includes an indicia of portion of the multimedia presentation wherein the indicia comprises a start time code and end time code. For any given multimedia presentation, a plurality of filter files are typically provided in a filter table. When there is match between the time code of the multimedia presentation and start time code of the filter file, then the filtering application executes the specified filtering action. In one example, the specified filtering action includes a skip action or a mute action, which causes the playback (both audio and video) of the multimedia presentation to stop at the start time and resume at the end time or to mute the audio component between the start time and end time, respectively.
    TABLE 1
    Filter Types and Associated
    Description of Content of Scene for each Filter Type
    Filter Filter
    Code Classification Filter type Filter Action
    V-S-A Violence Strong Action Violence Removes excessive violence,
    including fantasy violence
    V-B-G Violence Brutal/Gory Violence Removes brutal and graphic
    violence scenes
    V-D-I Violence Disturbing Images Removes gruesome and other
    disturbing images
    S-S-C Sex and Sensual Content Removes highly suggestive and
    Nudity provocative situations and
    dialogue
    S-C-S Sex and Crude Sexual Content Removes crude sexual language
    Nudity and gestures
    S-N Sex and Nudity Removes nudity, including partial
    Nudity and art nudity
    S-E-S Sex and Explicit Sexual Situation Removes explicit sexual dialogue,
    Nudity sound and actions
    L-V-D Language Vain Reference to Deity Removes vain or irreverent
    reference to Deity
    L-C-L Language Crude Language and Humor Removes crude sexual language
    and gestures
    L-E-S Language Ethnic and Social Slurs Removes ethnically or socially
    offensive results
    L-C Language Cursing Removes profane uses of “h*ll”
    and “d*mn”
    L-S-P Language Strong Profanity Removes swear words, including
    strong profanities
    L-G-V Language Graphic Vulgarity Removes graphic vulgarities,
    including “f***”
    O-E-D Other Explicit Drug Use Removes descriptive scenes of
    illegal drug use
  • [0015]
    Table 1 provides a list of examples of filter types that may be provided individually or in combination in an embodiment conforming to the invention. The filter types are grouped into five broad classifications, including: Violence, Sex/Nudity, Language, and Other. Within each of the four broad classifications, are a listing of particular filter types associated with each broad classification. A particular filter file for a particular multimedia presentation includes an indicia of a portion of the multimedia presentation, which may be in the form of a time sequence between a start time and an end time, and an indicia of the subject matter falling within the specified time sequence. In one particular implementation, a filter application causes multimedia time sequences to be skipped or muted as a function of one or more user selected particular filter types, e.g., V-S-A. Alternatively, or additionally, multimedia time sequences may be skipped or muted as a function of a broad classification, e.g., V, in which case all portions of a multimedia presentation falling within a broad filter classification will be skipped or muted. Through the filtering application, a user may activate any combination of the particular filter types.
  • [0016]
    Further details concerning the filtering application and filter file formatting are described in co-pending non-provisional application Ser. No. 11/104,924 titled “Apparatus, System, and Method for Filtering Objectionable Portions of a Multimedia Presentation” filed on Apr. 12, 2005.
  • [0017]
    The filtering application may be accessible from a processor in a multimedia player, such as a DVD player. The filter application, in such an arrangement, may be stored in a memory directly accessible by the multimedia processor or internal player memory. The filter tables for various multimedia presentations, on the other hand, are initially stored remotely from the multimedia player. In one particular implementation, the filter table for a particular multimedia presentation is loaded into memory of the multimedia player so that the filtering application may access the filter table to perform filtered playback of the multimedia presentation. To associate a particular filter file or set of filter files (filter table) with a particular multimedia presentation, aspect ratio information for the particular multimedia presentation is associated with the particular filter file. Other information may also be used to associate the filter information with the particular multimedia information, such as multimedia title information, multimedia length information, etc.
  • [0018]
    In the context of a DVD-based multimedia presentation, aspect ratio information for the multimedia presentation may be found in a directory commonly referred to as a “Video_TS directory.” The Video-TS directory includes a map of all titles stored on the DVD. “Titles” referring to DVD titles as defined in the DVD specification, which refers to a hierarchy of information on the DVD. The map is typically found in a particular file referred to as a “VIDEO_TS.IFO” file. Amongst all of the titles on the DVD will be the title file for the particular multimedia presentation associated with the filter file. Typically, the feature presentation is title one of a DVD. Thus, the aspect ratio for title one is identified. If the main movie title is not the first title, then the aspect ratio may be identified manually and by other means.
  • [0019]
    The aspect ratio information for the title of interest, e.g., title 1, is found at position 0x200 (hex) of a file referred to as a “VTS_##0.IFO” file, where ## represents the number of the title. Aspect ratio information is provided in a two byte format, with bits 2 and 3 relating to the aspect ratio for the specified title. The combined value of bits 2 and 3 is converted to an integer value. The VIDEO_TS.IFO file also has aspect ratio information available at location 0x100. If the value of the integer equals zero (bit 2=0, bit 3=0) then the movie has an aspect ratio of 4:3 (full-screen). If the value of the integer is three (bit 2=1, bit 3=1), then the aspect ratio if 16:9 (widescreen). The code found in Appendix A, which is hereby incorporated by reference herein, illustrates one particular method for parsing a DVD in order to identify the aspect ratio for title one of the DVD. In this implementation, it is presumed that title one of the DVD includes the feature presentation (i.e., the title with the data for the movie title (e.g., “Gladiator”) listed on the DVD) and for which a filter file may have been developed.
  • [0020]
    The aspect ratio information is provided in a computer readable media having the filter files of the particular multimedia presentation. The filter files (filter table) for a particular multimedia presentation may be provided on a removable memory media, such as CD, DVD, memory stick, etc. The filter files may also be transmitted or served from a remote memory location. In such an arrangement, it is possible for a user to access or purchase the filter files by way of a network location, such as a web site. Such a method is described in co-pending United States non-provisional application Ser. No. 11/256,419, filed Oct. 20, 2005 and entitled “Method and User Interface for Downloading Audio and Video Content Filters to a Media Player.” Upon purchase or identification of a filter table, the filter table is transmitted to the client device. The filter table may be transmitted and stored to a removable memory media, such as DVD, CD, floppy disk, memory stick, etc. From the removable memory media the filter table may be loaded to a multimedia player memory for use by the filtering application or directly accessed from the removable memory. The client device may also be the target DVD player, in which case the filter table is directly uploaded to DVD player memory from the remote memory location. The filter files may also be loaded to a DVD player from other memory media, such as described in co-pending U.S. application Ser. No. 11/327,103, filed Jan. 5, 2006 and entitled “Media Player Configured to Receive Playback Filters from Alternative Storage Mediums” The filter files are meant to be uploaded to a multimedia player or otherwise accessed by a multimedia player (e.g., DVD player) having a filtering application configured to use the filter files in order to filter a multimedia presentation accessed by the multimedia player.
  • [0021]
    The aspect ratio information encoded on a memory media and associated with a filter file or table for a multimedia presentation may be identified in any number of ways. In one particular implementation, a bit or bits are set in a specified arrangement and location. For example, a bit may be set to a digital 0 to represent a full screen aspect ratio, and a digital 1 to represent a wide screen aspect ratio. In another example, two bits may be set to digital 0 (i.e., 00 . . . ) to represent a full screen aspect ratio or the same two bits set to a digital 1 (i.e., 11 . . . ) to represent a wide screen aspect ratio.
  • [0022]
    FIG. 1 represents a byte arrangement 10A for one particular filter table (e.g., a set of discrete filters for a particular movie), with the byte arranged to connote a filter file or table associated with a multimedia presentation provided in a full screen format. In this example, two particular bits (12, 14) of an 8-bit byte value are each set to a digital 0 to identify a full screen multimedia presentation. As shown in FIG. 1, the bits may be included in a larger byte. Typically, an 8-bit byte identifies bits starting with bit 0 (16) in the right-most position and bit 7 (18) in the left-most position. In this example, bits 7 and 6 are each set to digital 0 to identify a full screen multimedia presentation. FIG. 2 illustrates a byte arrangement 10B for one particular filter set, with the byte arranged to connote a filter file or table associated with a multimedia presentation provided in a wide screen format. In FIG. 2, the same 8-bit byte of FIG. 1 has bits 7 and 6 set to digital 11 to identify a wide screen multimedia presentation. The same or different bytes may be used to identify different aspect ratio. Further, other bit combinations are possible to identify full screen and wide screen aspects ratios, as well as other possible video attributes of a particular multimedia presentation. It is also possible to simply set one bit as either 0 (full screen) or 1 (wide screen).
  • [0023]
    Other bits in the specified byte (i.e., bits 0-6 may be used for other purposes or serve as padding). The aspect ratio bit, bits, or byte may be included in a larger set of identifying data or may be provided separately therefrom. Moreover, it is also possible to set various bits or provide identifying values where aspect ratio information is used to generate the identifier in conjunction with other multimedia attributes, such as title information.
  • [0024]
    The filtering application, resident in a DVD player in one example, is configured to read the aspect ratio information for whatever multimedia presentation is placed in the DVD drive, such as through the code provided in Appendix A. The filtering application then compares the aspect ratio information for the multimedia presentation with the aspect ratio information for any filter table loaded in memory or otherwise accessible by the multimedia player configured to run the filtering application. The filtering application uses the aspect ratio information to determine if the appropriate filter file or files are loaded in memory. If there is not a match between a particular filter file or table and a particular multimedia presentation, then the filter file or table is not a match to the particular multimedia presentation. As mentioned above, the filtering application may use other information, as well, to determine if a particular filter table corresponds with a selected multimedia presentation.
  • [0025]
    Embodiments within the scope of the present invention also include computer-readable media for carrying or having computer-executable instructions or data structures stored thereon. Such computer-readable media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, DVD, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code means in the form of computer-executable instructions or data structures and which can be accessed by a general purpose or special purpose computer. When information is transferred or provided over a network or another communications link or connection (either hardwired, wireless, or a combination of hardwired or wireless) to a computer, the computer properly views the connection as a computer-readable medium. Thus, any such a connection is properly termed a computer-readable medium. Combinations of the above should also be included within the scope of computer-readable media. Computer-executable instructions comprise, for example, instructions and data which cause a general purpose computer, special purpose computer, or special purpose processing device to perform a certain function or group of functions.
  • [0026]
    Embodiments within the scope of the present invention also include computer-readable media for carrying or having computer-executable instructions or data structures stored thereon. Such computer-readable media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM, DVD, or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code means in the form of computer-executable instructions or data structures and which can be accessed by a general purpose or special purpose computer. Implementations of the present invention may be stored as computer readable instructions on a DVD along with a multimedia presentation intended to be filtered and played back with various time sequences muted or skipped. When information is transferred or provided over a network or another communications link or connection (either hardwired, wireless, or a combination of hardwired or wireless) to a computer (a computer data signal), the computer properly views the connection as a computer-readable medium. Thus, any such a connection is properly termed a computer-readable medium. Combinations of the above should also be included within the scope of computer-readable media. Computer executable instructions comprise, for example, instructions and data which cause a DVD player, a general purpose computer, special purpose computer, or special purpose processing device to perform a certain function or group of functions.
  • [0027]
    Although not required, aspects of the invention may be deployed as computer-executable instructions, such as program modules, adapted for deploying a filter file that may be readable and usable by a filter application loaded on a DVD player. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer-executable instructions, associated data structures, and program modules represent examples of the program code means for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represent examples of corresponding acts for implementing the functions described in such steps. Furthermore, program code means being executed by a processing unit provides one example of a processor means.
  • Appendix A
  • [0028]
    The following program code calls the function to get the aspect ratio for a feature presentation found in title 1 of a DVD and returns a value of the aspect ratio for the feature multimedia presentation found in title 1
      • // Read title 1 and retrieve the video attributes flag short videoAttributes=ReadVideoAttributes (dvdDrive);
      • // test bits 2 & 3 videoAttributes=(short)((videoAttributes & 0x0C)>>2);
  • [0031]
    private static short ReadVideoAttributes(string dvdPath)
  • [0032]
    {
      • string ifoPath=string.Format(@“{0}VIDEO_TS\VIDEO_TS.IFO”, dvdPath);
      • FileStream fileIfo;
      • if (!File.Exists(ifoPath))
        • return 0;
      • fileIfo=new FileStream(ifoPath, FileMode.Open, FileAccess.Read);
      • // Find out which VTS is Title 1.
      • fileIfo.Position=0xC4; // Find VMG_PTT_SRPT
      • int titleMapOffset=0;
      • byte[ ]buffer=new byte[25];
      • byte vts=0;
      • // Find out the location of the title map
      • fileIfo.Read(buffer, 0, 4);
      • titleMapOffset=ClearPlay.Convert.ReverseInt(System.BitConverter.ToInt32(buffer, 0));
      • titleMapOffset *=2048;
      • // Read the title map, and get the VTS of title 1
      • fileIfo.Position=titleMapOffset;
      • fileIfo.Read(buffer, 0, 20);
      • vts=buffer[0x0E];
      • fileIfo.Close( );
      • ifoPath=string.Format(@“{0}VIDEO_TS\TS{1:D2}0.IFO”, dvdPath, vts);
      • fileIfo=new FileStream(ifoPath, FileMode.Open, FileAccess.Read);
      • short videoAttributes=0;
      • // Read the video attributes
      • fileIfo.Position=0x200;
      • fileIfo.Read(buffer, 0, 2);
      • videoAttributes=System.BitConverter.ToInt16(buffer, 0);
      • return videoAttributes;
  • [0060]
    }
  • [0061]
    }
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Classifications
U.S. Classification715/201, G9B/27.019, 715/255, G9B/27.043
International ClassificationG06F17/00
Cooperative ClassificationG11B27/105, G11B27/322, G11B2220/2562
European ClassificationG11B27/32B, G11B27/10A1
Legal Events
DateCodeEventDescription
May 22, 2006ASAssignment
Owner name: CLEARPLAY, INC., UTAH
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JARMAN, MATTHEW T.;REEL/FRAME:017664/0180
Effective date: 20060505