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Error correction of digital signals

  • US 4,074,228 A
  • Filed: 10/26/1976
  • Issued: 02/14/1978
  • Est. Priority Date: 11/03/1975
  • Status: Expired due to Term
First Claim
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1. A method of correcting errors in a digital signal, the method comprising the steps of:

  • receiving a digital signal comprising information bits, first error control bits corresponding to a first error control code, and second error control bits corresponding to a second error control code,decoding the first error control bits to determine the probability of error in the received signal,decoding the second error control bits,using the error probability determined from the first error control bits to define a correction algorithm, andcorrecting the information bits by performing on them the said correction algorithm using the decoded second error control bits.

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