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Apparatus for and method of in-band clock compensation

  • US 6,807,638 B1
  • Filed: 12/29/2000
  • Issued: 10/19/2004
  • Est. Priority Date: 12/29/2000
  • Status: Expired due to Fees
First Claim
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1. A method of in band clock compensation for use in a synchronous data processing module, said module including a first in first out (FIFO) queue and adapted to receive an input data stream, said method comprising the steps of:

  • inserting a first number of clock sync symbols into said input data stream on a periodic basis;

    at said module, removing all but a second number of clock sync symbols from said input data stream;

    determining the level of said queue in said module;

    if said level is below a lower threshold, inserting a third number of clock sync symbols into said data stream;

    if said level is above said lower threshold and below an upper threshold, inserting a fourth number of clock sync symbols into said data stream; and

    if said level is above said upper threshold, inserting a fifth number of clock sync symbols into said data stream.

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