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Video transmission apparatus

  • US 5,991,313 A
  • Filed: 04/04/1997
  • Issued: 11/23/1999
  • Est. Priority Date: 05/24/1996
  • Status: Expired due to Fees
First Claim
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1. A video transmission apparatus equipped with functions of transmitter-receiver and arranged to effect inputting and outputting of image data consisting of video data and first audio data, and second audio data for realizing telephone function, the improvement comprising:

  • a video codec for compression-encoding video data to be transmitted and decompression-decoding video data as received;

    a first audio codec for compression-encoding first audio data to be transmitted and decompression-decoding first audio data as received;

    a second audio codec for compression-encoding second audio data to be transmitted and decompression-decoding second audio data as received;

    a multiplexer-demultiplexer for including a three-channel buffer memory and processor; and

    an interface connectable to communications satellite network and ground network,wherein in the multiplexer-demultiplexer, video data-first audio data and second audio data to be transmitted are multiplexed and converted to a packet based on a predetermined communication format, and packet as received is separated into video data-first audio data, and second audio data.

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