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Digital multiplex transmission system

  • US 5,506,903 A
  • Filed: 04/05/1994
  • Issued: 04/09/1996
  • Est. Priority Date: 04/06/1993
  • Status: Expired due to Term
First Claim
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1. A digital multiplex transmission system, comprising:

  • first multiplexer means for multiplexing at least digital audio data and digital video data and scrambling resultant multiplexed data with a scrambling train;

    second multiplexer means for multiplexing scrambled data from said first multiplexer means, scramble control data and system data, and allocating resultant scrambled multiplexed data on a two-dimensional frame;

    means for coding the frame in units of a block in a horizontal direction by Reed-Solomon coding to add Reed-Solomon codes to the frame, the frame having respective regions for the video data, the audio data, the scramble control data, the system data and the Reed-Solomon codes, and each pair of adjacent regions having a boundary therebetween which is a vertical straight line; and

    means for adding the system data including a frame synchronizing signal to the two-dimensional frame, coding resultant data by convolution coding to obtain digital multiplexed data and transmitting the digital multiplexed data.

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