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Subband coded digital transmission system using some composite signals

DC CAFC
  • US 5,539,829 A
  • Filed: 06/07/1995
  • Issued: 07/23/1996
  • Est. Priority Date: 06/02/1989
  • Status: Expired due to Term
First Claim
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1. A digital transmission system, for producing a replica of a digital signal comprising at least a first component and a second component, comprising:

  • an encoder including analysis means for altering said digital signal to obtain a plurality of sub-signals, including at least a first sub-signal and a second sub-signal from said first component and said second component respectively,signal combination means for combining said first sub-signal and said second sub-signal to obtain a composite sub-signal,signal generator means for generating an indicator signal indicating that said first sub-signal and said second sub-signal are combined,transmission means for transmitting said indicator signal, said composite sub-signal, and sub-signals which have not been combined,receiving means for receiving the signals which were transmitted,means, responsive to the received indicator signal and composite subsignal, for generating a signal related to at least one of said first component and said second component, anda decoder including synthesis means for combining the transmitted subsignals and the signal related to at least one of said first component and said second component to produce said replica of the digital signal.

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