Coding method for coding packetized serial data with low overhead
Blocks of input data are received. The input data comprises packets of information words. The packets are preceded and followed by control words. A master transition is appended to the beginning of each block to form a respective frame for transmission. The master transition has a sense that depends on whether the block contains any control words. Additionally, for each block that contains one or more control words, a TYPE word indicating a structural property of the block is generated, the block is condensed to accommodate the TYPE word, and the TYPE word is inserted into the block. The coding method provides a very low overhead (3.125%) when implemented as a 64b/66b code.
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additional inventional
Richard C. Richard W. Bharadwaj
Walker Dugan Amrutur