H - Electricity – 03 – M
Patent
H - Electricity
03
M
354/68
H03M 5/14 (2006.01) G11B 20/14 (2006.01) H04L 25/49 (2006.01)
Patent
CA 1271846
ABSTRACT : "Method of encoding n-bit information words into m-bit code words, apparatus for carrying out said method, method of decoding m-bit code words into n-bit information words, and apparatus for carrying out said method". A method of encoding n-bit information words into m-bit code words and the other way round is described, which code words have a specific disparity d and a digital sum value which is limited to values p and q. In order to enable encoding and decoding without the use of an extens- ive look-up table use is made of a series of numbers which is a modified version of numbers in conformity with the Newton binomial. By means of this modified series the n-bit information words, which are arranged in conformity with their binary weights, are mapped lexicographically and unambiguously onto code words with limited digital sum value, and the other way round.
472282
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
Schouhamer Immink Kornelis A.
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