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Correcting crossover distortion produced when analog signal thresholds are used to remove noise from signal

  • US 5,287,534 A
  • Filed: 11/08/1991
  • Issued: 02/15/1994
  • Est. Priority Date: 01/04/1990
  • Status: Expired due to Term
First Claim
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1. A method utilizing digital circuitry for removing crossover distortion to derive a processed digital signal from positive and negative digital signal sample components that were formed by positive and negative threshold comparisons, said crossover distortion manifested by periods during which both said negative and said positive digital signal sample components have a logic zero value, comprisingA. forming a replica of said positive digital signal sample component which is delayed by a predetermined time period,B. forming a first intermediate signal represented a logical OR of said replica with said positive digital signal sample component,C. forming a second intermediate signal representing a negation of said negative digital signal sample component, andD. forming a logical AND of said first and second intermediate signals, to form said processed digital signal.

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