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Clock synchronization over data transmission networks

  • US 6,175,604 B1
  • Filed: 07/27/1998
  • Issued: 01/16/2001
  • Est. Priority Date: 07/27/1998
  • Status: Expired due to Fees
First Claim
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1. A method of synchronizing two clocks, one each at two terminal ends of a transmission network, the method comprising the steps:

  • produce a plurality of signals in at least two portions;

    a base signal portion, and a program clock reference portion;

    transmit signals across a transmission network;

    receive a plurality of said signals at a receiving end;

    separate program clock references from base signal portions;

    use a plurality of program clock references in a least squares linear regression fitting procedure; and

    set a clock rate based on the data output from the least squares linear regression procedure.

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