Coding scheme using a transition indicator for signal transmission in optical communications networks

  • US 6,952,405 B2
  • Filed: 02/27/2001
  • Issued: 10/04/2005
  • Est. Priority Date: 12/05/2000
  • Status: Active Grant
First Claim
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1. A method for transporting multi-word information groups containing data words and control characters over a communications link, comprising the steps of:

  • (a) determining whether each of said information groups includes control characters;

    (b) for each information group that does not include control characters, setting a data indicator and combining said data indicator with the data words of the information group to generate an encoded information stream including said data indicator and the data words; and

    (c) for each information group that includes one or more control characters, generating an encoded information stream by the steps of, (i) encoding the control characters to control codes, (ii) generating a transition indicator based on the number of control characters for indicating the occurrence of a final control code in the encoded information stream, (iii) generating a location pointer for each of the control codes representative of the sequential position within the information group for each of the corresponding control characters, and (iv) combining the control codes, the data words, said location pointers, and said transition indicator for each information group to form the encoded information stream.

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