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Coding method and coder for coding packetized serial data with low overhead

  • US 6,718,491 B1
  • Filed: 03/06/2000
  • Issued: 04/06/2004
  • Est. Priority Date: 03/06/2000
  • Status: Expired due to Term
First Claim
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1. A method for coding a packet of information words into frames for transmission, the method comprising:

  • receiving blocks of input data, the input data including control words and the packet of information words, the packet having a start preceded by ones of the control words and an ending followed by others of the control words, the blocks being smaller than the packet;

    determining when a block consists exclusively of information words;

    when the block consists exclusively of information words, appending to the block a master transition having a first sense to form one of the frames;

    when the block does not consist exclusively of information words;

    condensing the block to accommodate a TYPE word; and

    generating the TYPE word having a value that indicates one of the following structural properties of the block;

    (a) a position of the start of the packer in the block, (b) a position of the end of the packet in the block, and (c) the block being composed exclusively of control words, and inserting a TYPE word into the block, and appending to the block a master transition having a second sense, opposite to the first sense, to form the one of the frames.

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