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US20040216170A1 - Providing content interruptions - Google Patents

Providing content interruptions Download PDF

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Publication number
US20040216170A1
US20040216170A1 US10848931 US84893104A US2004216170A1 US 20040216170 A1 US20040216170 A1 US 20040216170A1 US 10848931 US10848931 US 10848931 US 84893104 A US84893104 A US 84893104A US 2004216170 A1 US2004216170 A1 US 2004216170A1
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Prior art keywords
content
instructions
interrupting
system
shell
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US10848931
Inventor
Oleg Rashkovskiy
Noam Shendar
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Blackarrow Inc
Original Assignee
Rashkovskiy Oleg B.
Shendar Noam A.
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331Caching operations, e.g. of an advertisement for later insertion during playback
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/10Arrangements for replacing or switching information during the broadcast or the distribution
    • H04H20/106Receiver-side switching
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/40Arrangements for broadcast specially adapted for accumulation-type receivers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H60/00Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/16Arrangements for conditional access to broadcast information or to broadcast-related services on playing information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4408Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/458Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/60Selective content distribution, e.g. interactive television, VOD [Video On Demand] using Network structure or processes specifically adapted for video distribution between server and client or between remote clients; Control signaling specific to video distribution between clients, server and network components, e.g. to video encoder or decoder; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
    • H04N21/65Transmission of management data between client and server
    • H04N21/654Transmission by server directed to the client
    • H04N21/6543Transmission by server directed to the client for forcing some client operations, e.g. recording
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81Monomedia components thereof
    • H04N21/812Monomedia components thereof involving advertisement data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television, VOD [Video On Demand]
    • H04N21/80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81Monomedia components thereof
    • H04N21/8166Monomedia components thereof involving executable data, e.g. software
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309Transmission or handling of upstream communications
    • H04N7/17318Direct or substantially direct transmission and handling of requests
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28Arrangements for simultaneous broadcast of plural pieces of information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H60/00Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/21Billing for the use of broadcast information or broadcast-related information
    • H04H60/22Billing for the use of broadcast information or broadcast-related information per use
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H60/00Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution

Abstract

Content which users may wish to receive may be distributed with interrupting content such that the use of the content on the user's receiver may be interrupted and replaced with the interrupting content. The content which the user wishes to receive may be software, audio, video, graphics or other material and the interrupting content in one embodiment of the prevent invention may be advertisements. In this way, the user's receiver may be utilized to determine when it is appropriate to interrupt the interruptible content with the interrupting content. This may provide a convenient mechanism for reduced price or free distribution of a wide variety of media currently provided only in physical form or only for free without any compensation to the content provider.

Description

    BACKGROUND
  • [0001]
    This invention relates generally to broadband content distribution.
  • [0002]
    Broadband content distribution may involve the distribution of television programming to a large number of receivers as well as the distribution of other forms of content. Content which may be amenable to wide spread distribution include video, graphics, software, audio and games.
  • [0003]
    The ability to charge customers for content in many cases means that the type of content that may be distributed may be of higher quality. Thus, pay-per-view television programming is widely accepted.
  • [0004]
    However, there is a considerable demand for the distribution of content without charge. Conventional television broadcasts subsidize distribution through an advertising scenario. Similarly, in connection with the Internet, a large amount of content is distributed for free with the hope that viewers will patronize advertisers that pay for banner ads that accompany the content.
  • [0005]
    Thus, it would be desirable to include advertising material or other interruptions in the course of a wide variety of content that might be distributed for free or at reduced charge in a broadband distribution network. However, many content formats are not amenable to the ready incorporation of advertising material. For example, games and software could be distributed with banner ads. However, full screen display of advertisements is generally not viable because there is no way to know when to insert these advertisements in the course of the video game or software operation.
  • [0006]
    Thus, there is a need for ways to provide temporary interruptions, for example for purposes of inserting advertisements, in a wide variety of content distributed in a digital broadband distribution system.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0007]
    [0007]FIG. 1 is a schematic depiction of a broadband digital distribution system in accordance with one embodiment of the present invention;
  • [0008]
    [0008]FIG. 2 is a flow chart for software which may be utilized on a receiver in the system shown in FIG. 1; and
  • [0009]
    [0009]FIG. 3 is a block depiction of a receiver in accordance with one embodiment of the present invention.
  • DETAILED DESCRIPTION
  • [0010]
    A digital broadband distribution network 10, shown in FIG. 1, may implement the distribution of a variety of content formats and the provision of content interruptions on a content receiver 16. The content receiver 16 receives content from a content transmitter 12 which in turn receives broadcast content from a content provider 14.
  • [0011]
    The content transmitted by the transmitter 12 may be made up of conventional content termed “interruptible content” and “interrupting content”. Interruptible content is content whose operation, play, or use may be interrupted for the substitution of other content. The content which is temporarily substituted for the interruptible content is called the interrupting content.
  • [0012]
    In accordance with one embodiment, interruptible content that the user desires to receive may be interrupted with interrupting content that may help to pay for the interruptible content. The interrupting content may include advertisements.
  • [0013]
    The interruptible content may be video, graphics, audio, games, and other software such as application software. The interrupting content may be substituted for the interruptible content under control of the receiver 16 in one embodiment.
  • [0014]
    The content from the content transmitter 12 is received by a tuner/demodulator 18 contained in the digital content receiver 16. The tuner/demodulator 18 tunes to one or more channels and demodulates those channels for display. In addition, the tuner/demodulator 18 may parse the interruptible and interrupting content and forwards that information to an encrypted cache 20. The tuner/demodulator 18 also parses storing instructions utilized for controlling the storage of the content. The storing instructions are also forwarded to the encrypted cache 20 for use in storing the content. In addition, the tuner/demodulator 18 may parse upgrades, provided with the content, for upgrading previously received content. Finally the tuner/demodulator 18 may parse interruption instructions from the rest of the content. These interruption instructions tell when to interrupt the interruptible content with the interrupting content. The interruption instructions may be forwarded to a program guide 24.
  • [0015]
    The program guide 24 may receive interruption instructions from a back channel which may be coupled to the broadcast content provider 14. The interruption instructions may be conveyed, for example, over the Internet as indicated at 26. In some cases, the interruption instructions may be updated, revised or extended and therefore it may be necessary to convey them after the original content is received.
  • [0016]
    The program guide 24 may provide a schedule of available information that may be received from the content provider 14. This information may be accessed over the backchannel such as the Internet 26 to reduce the storage requirements on the content receiver 16. The interruption instructions, received over the back channel or as parsed by the tuner/demodulator 18, may be forwarded by the content guide 24 to a shell 22. The shell 22 in one embodiment of the present invention may be a software module that controls the use of content received from the broadcast content provider 14. Moreover, the shell 22 implements the interruption of interruptible content with interrupting content in accordance with interruption instructions received as described previously.
  • [0017]
    The encrypted cache 20 stores the content in a format that prevents decryption and theft by unauthorized individuals. The encrypted cache 20 may, for example, be part of a hard disk drive. When content is received by the system 10, the shell 22 stores the information on the hard disk drive and particularly in the encrypted cache. For example, the shell 22 may cause the content to be distributed to a variety of storage locations on the hard disk drive so that the content may not be continuously accessed in one contiguous hard drive area. Only the shell 22 can access the map which indicates where the content is stored on the hard disk drive and how it can be reconstructed to play back the content in a meaningful fashion.
  • [0018]
    Thus, as content is acquired from a source and stored through the shell into the hard disk drive, it is stored in a form which can only be access by the shell thereafter. To access the content one must access the content through the shell because only the shell knows where all the portions of the content are stored and how to reconstruct it in a meaningful fashion. Thus, the shell can control access in a variety of ways. For example, the shell can prevent access, the shell can provide access only in return for either watching a commercial or paying a fee or the shell may limit the number of times that the content may be viewed or even the times when the content may be viewed.
  • [0019]
    Thus, in the embodiment illustrated in FIG. 1, the shell 22 may have content, such as games or rentable software as a few examples. When the user wishes to use the content which is available from the content provider 14, the user may request a download of that information or that information may be conveyed during conditions of high bandwidth availability. Alternatively, other schemes for providing the content to the receiver 16 may be utilized. In general, the transport mechanism may include any digital mechanism such as satellite transmission, cable transmission or airwave broadcast.
  • [0020]
    Conceivably, the content may also be provided in conventional physical, portable forms such as compact disks (CD-ROM), digital video disks (DVD), flash memory or the like. The content, however received, is encoded in a way in which, absent the use of the shell 22, one would be unable to use, hear, view, play or otherwise enjoy the content. Thus, the system controls access to the content in a secure way using encryption provided with the content as conveyed over the transport media or as received in physical form by the user.
  • [0021]
    Once the information has been cached in the cache 20, the user can receive the right to enjoy play, hear or view the content as the case may be from the shell 22. The shell 22 then releases the information for use in the appropriate format on the processor-based content receiver 16. The shell 22 may also control the number of times or the time period when the content may be used.
  • [0022]
    Moreover, the shell 22 monitors a criteria which determines when the content's use is to be interrupted with interrupting content. Thus, the shell 22 may force a mechanism wherein interrupting content may be temporarily played in place of interruptible content. For example, advertisements may be provided together with the interruptible content. Alternatively, the interrupting and interruptible content may be received at different times via different mechanisms.
  • [0023]
    For example, the interrupting content may be inserted at regular intervals. In other cases, the interrupting content may be inserted when advantageous conditions arise. For example, in connection with gaming software, when the user reaches a stopping point, the system may determine that the action has paused sufficiently that the interrupting content may be inserted. Moreover, instead of linearly inserting the interrupting content, the content may be inserted in a progressive fashion. Thus, the more the user uses the content the higher the rate at which interrupting content may be substituted.
  • [0024]
    In one embodiment of the present invention, the content that is being played may be interrupted with the play of the commercial in real time. That is, when the commercial is broadcast over a broadcast media, it may automatically be inserted into the playback of the content on the system 10 as well.
  • [0025]
    In one embodiment of the present invention, the interruptible content may be an advertisement; however, the interrupting content may also be a request that the user make some form of payment in order to continue to use the interruptible content. For example, the receiver 16 may be called upon to access backchannel to make a payment for the continued use of the content. When the receiver 16 does so, the receiver 16 may be provided with a code either through the back channel or from the content provider which allows continued use of the interruptible content.
  • [0026]
    In some embodiments of the present invention, techniques may be utilized to reduce the likelihood that users of the system 10 will discontinue their use when the commercial is played. For example, an overlay may be provided over the commercial indicate what is coming up next in the content. For example, where the content is game and the commercial is inserted after the user reaches a given level, information may be provided about the next level as an overlay, for example, over the ongoing play of the commercial.
  • [0027]
    Referring to FIG. 2, the software 28 for controlling the interruption of the interruptible content may be stored on a suitable storage medium such as a hard disk drive on the receiver 16. Initially, the software 28 waits for a request for content as indicated in diamond 30. Once such a request is received, the content may be supplied as indicated in block 32. In the same process, interruption instructions may be acquired as indicated in block 34 for the content which was requested and supplied in block 32. In addition, interrupting content may then be obtained as indicated in block 36. When an interruption criteria is satisfied, as determined in diamond 38, the ongoing use of the interruptible content may be interrupted as indicated in block 40. Thus, in one embodiment of the present invention, the interruptible content is interrupted upon satisfaction of an interruption criteria. The interrupting content, such as an advertisement, is substituted temporarily.
  • [0028]
    A check at diamond 42 then determines whether the interrupted criteria is complete. If not, the flow recycles to continue to check to determine whether the interruption criteria is satisfied at diamond 38. Otherwise, the flow ends.
  • [0029]
    A processor-based content receiver 16 in accordance with one embodiment of the present invention shown in FIG. 3, may be a set top box, a desk top computer, an appliance, a handheld device, or other form factors. The receiver 16 may include a processor 44. In one embodiment, the processor 44 may be coupled to an accelerated graphics port (AGP) chipset 46 for implementing an accelerated graphics port embodiment. The chipset 46 communicates with the system memory 52, the AGP port 48 and the graphics accelerator 50. A television 54 may be coupled to the video output of the graphics accelerator 50. The chipset 46 is also coupled to a bus 56 which may be, for example, a Peripheral Component Interconnect bus (PCI) bus. See revision 2.1 of the PCI Electrical Specification available from the PCI Special Interest Group, Portland, Oreg. 97214. The bus 56 connects to a TV tuner/capture card 58 which provides tuning and demodulation for receiving the digital signal. The card 58 may be coupled an antenna 60 or other source of digital video such as a cable input, a satellite receiver or the like.
  • [0030]
    The bus 56 is also coupled to a bridge 62 that couples the hard disk drive 64 that may store the software 28 in one embodiment of the present invention. The bridge 62 is also coupled to another bus 66 which may be coupled to a serial input/output (SIO) device 68. In one embodiment of the present invention, the device 68 is in turn coupled to an interface 70 which may be an infrared interface. The interface 70 communicates with a remote control unit 72. Also connected to the bus 66 is a basic input/output system (BIOS) 74.
  • [0031]
    In some cases, a large amount of content may eventually be downloaded or otherwise acquired and stored in a storage medium associated with the system 10. For example, in conventional systems, the storage medium may be a hard disk drive. Thus, it may be useful for the user to know what content has been stored on the user's hard disk drive. A file may be assembled which gives the user a content guide that lists all the content which is still available for access through the shell 22. In this way, the user can select that content by selecting one of the entries in the content guide. For example, the entries in the content guide may be selected by mouse clicking on them causing the content to immediately begin play.
  • [0032]
    While a digital receiving system has been described above, the present application is equally applicable to analog systems such as analog television receivers which work with set-top boxes. In such case, storing instructions may be provided over the vertical blanking interval in one embodiment of the present invention. Alternatively, storing instructions may be received over the Internet or through some other source.
  • [0033]
    In another alternate embodiment, interruption instructions, interrupting content and interruptible content may be received over the Internet 26. In such case, the content may be forwarded through the program guide 24 and directly to the encrypted cache 20. As a result, the content bypasses the tuner/demodulator 18 but still ends up being stored in the encrypted cache 20 as described previously. That information may then be accessed through the shell 22 in the same way as information stored in the encrypted cache 20 via the tuner/demodulator 18. The interruption instructions may be sent through the program guide 24 to the shell 22.
  • [0034]
    While the present invention has been described with respect to a limited number of embodiments, those skilled in the art will appreciate numerous modifications and variations therefrom. It is intended that the appended claims cover all such modifications and variations as fall within the true spirit and scope of this present invention.

Claims (20)

    What is claimed is:
  1. 1. A method comprising:
    allowing the use of a first content on a content receiver;
    automatically interrupting the use of the first content; and
    causing the receiver to temporarily replace the first content with second content.
  2. 2. The method of claim 1 including receiving said first and second content over a broadband distribution system.
  3. 3. The method of claim 2 including receiving television programming.
  4. 4. The method of claim 1 wherein temporarily replacing the first content with the second content includes periodically replacing the first content with the second content.
  5. 5. The method of claim 4 including replacing said first content with advertising content.
  6. 6. The method of claim 1 including receiving digital content and demodulating said content.
  7. 7. The method of claim 6 including parsing content and control information.
  8. 8. The method claim 7 wherein parsing content from control information includes parsing from said content, instructions for determining when said content may be interrupted.
  9. 9. The method of claim 7 including receiving instructions from a back channel for controlling the interruption of said content.
  10. 10. The method of claim 1 including receiving encrypted content and controlling the decryption of said content to prevent theft of said content.
  11. 11. An article comprising a medium for storing instructions that enable a processor-based system to:
    allow the use of a first content on the system;
    automatically interrupt the use of the first content; and
    cause the system to temporarily replace the first content with second content.
  12. 12. The article of claim 11 further storing instructions that enable a processor-based to receive said first and second content over a broadband distribution system.
  13. 13. The article of claim 12 further storing instructions that enable a processor-based system to receive television programming.
  14. 14. The article of claim 11 further storing instructions that enable a processor-based system to periodically replace the first content with the second content.
  15. 15. The article of claim 11 further storing instructions that enable a processor-based system to receive digital content and to demodulate said content.
  16. 16. The article of claim 15 further storing instructions that enable a processor-based system to parse content from control information.
  17. 17. The article of claim 16 further storing instructions that enable a processor-based system to parse from said content, instructions for determining when said first content may be interrupted.
  18. 18. The article of claim 16 further storing instructions that enable a processor-based system to receive instructions from a back channel for controlling the interruption of said content.
  19. 19. The article of claim 11 further storing instructions that enable a processor-based system to receive encrypted content and control the decryption of said content to prevent theft of said content.
  20. 20-30. (Canceled)
US10848931 2000-04-28 2004-05-19 Providing content interruptions Abandoned US20040216170A1 (en)

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US56144300 true 2000-04-28 2000-04-28
US10848931 US20040216170A1 (en) 2000-04-28 2004-05-19 Providing content interruptions

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US10848931 US20040216170A1 (en) 2000-04-28 2004-05-19 Providing content interruptions

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US56144300 Continuation 2000-04-28 2000-04-28

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US10848931 Abandoned US20040216170A1 (en) 2000-04-28 2004-05-19 Providing content interruptions
US11715171 Abandoned US20070162951A1 (en) 2000-04-28 2007-03-07 Providing content interruptions
US12542040 Active 2022-09-05 US8640161B2 (en) 2000-04-28 2009-08-17 Providing content interruptions
US12542036 Active 2023-03-25 US8578405B2 (en) 2000-04-28 2009-08-17 Providing content interruptions

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US11715171 Abandoned US20070162951A1 (en) 2000-04-28 2007-03-07 Providing content interruptions
US12542040 Active 2022-09-05 US8640161B2 (en) 2000-04-28 2009-08-17 Providing content interruptions
US12542036 Active 2023-03-25 US8578405B2 (en) 2000-04-28 2009-08-17 Providing content interruptions

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US (4) US20040216170A1 (en)
EP (1) EP1277298A2 (en)
CN (1) CN1213606C (en)
CA (1) CA2406778C (en)
WO (1) WO2001084753A3 (en)

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US20070162951A1 (en) 2007-07-12 application

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