发明名称 |
DEVICE FOR ENCODING/DECODING N-BIT SOURCE WORDS INTO CORRESPONDING M-BIT CHANNEL WORDS, AND VICE VERSA |
摘要 |
<p>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) satisfying a (d,k) constraint, wherein the bitstream of the source signal is divided into n-bit source words (x1, x2), which device comprises converting means (CM) adapted to convert said source words into corresponding m-bit channel words (Y1, Y2, Y2). The converting means (CM) are further adapted to convert n-bit source words into corresponding m-bit channel words, such that the conversion for each n-bit source word is parity preserving (table I). The relations hold that m>n>=1, p>=1, and that p can vary. Preferably, m=n+1. Further, a sync word generator (9) is available for generating a q-bit sync word also satisfying said (d,k) constraint, the said sync word starting with a "0' bit and ending with a "0' bit, the device further comprising merging means (19) for merging said sync word in said stream of databits of the binary channel signal, and that q is an integer value larger than k. (FIG. 1)Further, a decoding device is disclosed for decoding the channel signal obtained by means of the encoding device.</p> |
申请公布号 |
EP0954861(A1) |
申请公布日期 |
1999.11.10 |
申请号 |
EP19980940512 |
申请日期 |
1998.09.17 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;SONY CORPORATION |
发明人 |
KAHLMAN, JOSEPHUS, ARNOLDUS, HENRICUS, MARIA;SCHOUHAMER IMMINK, KORNELIS, ANTONIE;VAN DEN ENDEN, GIJSBERT, JOSEPH;NAKAGAWA, TOSHIYUKI;SHIMPUKU, YOSHIHIDE;NARAHARA, TATSUYA;NAKAMURA, KOUSUKE |
分类号 |
G11B20/14;H03M5/14;(IPC1-7):G11B20/14 |
主分类号 |
G11B20/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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