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Point-to-multipoint high definition multimedia transmitter and receiver

  • US 7,992,177 B2
  • Filed: 09/07/2007
  • Issued: 08/02/2011
  • Est. Priority Date: 09/07/2006
  • Status: Expired due to Fees
First Claim
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1. A system for communicating high definition video, comprising:

  • a transmitter, including;

    a video receiver to receive original video from a video source and to output information identifying the original video in a predetermined video format;

    a transmitter-side bus;

    a transmitter-side channel communicating with the transmitter-side bus;

    a video encoder receiving the information identifying the original video in the predetermined video format from the video receiver and outputting new information identifying the original video in a compressed format;

    a transmitter-side programmed logic device receiving the new information identifying the original video in the compressed format, time-stamping the new information identifying the original video in the compressed format by placing a time-stamp in an associated packet header, and placing the time-stamped new information identifying the original video in the compressed format onto the transmitter-side bus and to the transmitter-side channel; and

    a transmitter-side clock producing clock information communicated to the transmitter-side bus, the clock information being periodically packeted as control information and provided to the transmitter-side channel;

    multiple receivers to simultaneously communicate with the transmitter, each including;

    a receiver-side bus;

    a receiver-side channel communicating with the receiver-side bus and with the transmitter-side channel asynchronously as to the others of the multiple receivers, the receiver-side channel to receive the new information identifying the original video in the compressed format from the transmitter-side channel and to place the new information identifying the original video in the compressed format onto the receiver-side bus;

    a receiver-side clock periodically calibrated to the transmitter-side clock using the clock information packeted as control information and provided to the receiver-side channel via the transmitter-side channel;

    a receiver-side programmed logic device to read the new information identifying the original video in the compressed format from the receiver-side bus, reading the time-stamping of the new information identifying the original video in the compressed format, and (1) if the time-stamping information of the new information is larger than the receiver-side clock, buffering the new information identifying the original video in the compressed format and (2) if the time-stamping information of the new information is smaller than the receiver-side clock, discarding the new information identifying the original video in the compressed format;

    a video decoder receiving the buffered new information identifying the original video in the compressed format from the receiver-side programmed logic device and decompressing the new information into a decoded format of information identifying the original video;

    a high definition display port for communication with a high definition display; and

    a video transmitter to receive the decoded format of information identifying the original video, to convert the decoded format of information identifying the original video to a high definition format of information identifying the original video, and outputting the high definition format of information identifying the original video to the high definition display port.

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