H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 5/14 (2006.01) G11B 20/14 (2006.01)
Patent
CA 2321208
A device is disclosed for encoding a stream of databits of a binary source signal (S) into a stream of databits of a binary channel signal (C), wherein the stream of databits of the source signal is divided into n-bit source words (X1, X2), which device comprises converting means (CM) conceived to convert said n-bit source words into corresponding m-bit channel words (Y1, Y2, Y3) in accordance with a conversion of the Jacoby type, where m and n are integers, with m~n. The device further comprises control means (10) for carrying out DC- control of said binary channel signal by introducing a freedom of choice in the source-to-channel conversion. Furthermore, a decoding device is disclosed for decoding the channel signal obtained by means of the encoding device.
L'invention porte sur un dispositif de codage permettant de coder en un train binaire de données d'un signal de canal binaire (C) un train binaire de données d'un signal source binaire (S). Le train binaire de données du signal source se subdivise en mots source de n bits (X¿1?, X¿2?). Le dispositif comprend un convertisseur (CM) de conversion conçu pour faire sur les mots source de n bits une conversion de Jacoby donnant des mots de canal correspondants de m bits (Y¿1?, Y¿2?, Y¿3?), m et n étant des entiers tels que m~n. Le dispositif comprend également un régulateur (10) assurant la régulation courant continu du signal du canal binaire par introduction d'une liberté de choix dans la conversion source-canal. L'invention porte, de plus, sur un dispositif de décodage permettant de décoder le signal canal produit par le dispositif de codage.
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
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