Coded data generation or conversion – Digital code to digital code converters – To or from minimum d.c. level codes
Patent
1992-07-02
1995-03-07
Logan, Sharon D.
Coded data generation or conversion
Digital code to digital code converters
To or from minimum d.c. level codes
341 59, 341 94, H03M 730, H03M 1300, H03M 746
Patent
active
053962397
ABSTRACT:
Input values are data encoded for improved signal characteristics (e.g., limited maximum run length and limited cumulative DC-offset) so as to form "data codewords," and then a number of the data codewords, collectively referred to as a block, are error protection encoded, preferably using a conventional linear and systematic forward error control ("FEC") code, to yield an FEC code block. Preferably, an FEC code block is formed by generating a number of check bits or FEC bits equal to the number of data codewords in the block, and then concatenating one FEC bit and its binary complement with each data codeword, so that one FEC bit and its complement is interposed between each successive codeword.
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Kirby Alan A.
McMahon Donald H.
Schofield Bruce A.
Springer Kent
Digital Equipment Corporation
Logan Sharon D.
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