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Method and apparatus for frame synchronization

  • US 4,984,238 A
  • Filed: 03/08/1989
  • Issued: 01/08/1991
  • Est. Priority Date: 03/14/1988
  • Status: Expired due to Term
First Claim
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1. A frame synchronization method comprising the steps of:

  • (a) receiving serial signals including frame synchronization signals and frame identification signals transmitted serially through a transmission line in n-multiplexed form;

    (b) converting said received serial signals to parallel signals;

    (c) latching said parallel signals;

    (d) carrying out synchronization detection of a frame synchronization signal using one of n-multiplexed frame synchronization signals derived from a sequence of frame synchronization signals each delayed by one bit from the preceding frame synchronization signal;

    (e) carrying out synchronization confirmation as a guard of synchronization by detecting a repetition of said synchronization detections of said frame synchronization signal;

    (f) confirming the subsequent frame identification signal based on said synchronization confirmation; and

    (g) carrying out separation of said received multiplexed signals into a plurality of channels based on said synchronization confirmed frame synchronization signal and said confirmed frame identification signal.

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