Claims
- 1. An encoder for encoding a stream of n-bit source words of a binary source signal into a stream m-bit channel words of a binary channel signal, said encoder comprising:converting means for converting each successive block of p consecutive n-bit source words into a corresponding block of p consecutive m-bit channel words, the conversion of each block being substantially parity preserving, where n, m and p are integers, m>n≧1, and p>1 and is variable; and detecting means coupled to said converting means for detecting the presence in the bitstream of the binary source signal of the 8-bit sequence “10010001”, and in that event controlling said converting means to convert said 8-bit sequence into the 12-bit sequence “100010010010” in the binary channel signal.
Priority Claims (2)
Number |
Date |
Country |
Kind |
97204050 |
Dec 1997 |
EP |
|
98200402 |
Feb 1998 |
EP |
|
Parent Case Info
This application is a con of Ser. No. 09/217,427 filed Dec. 21, 1998 now U.S. Pat. No. 6,175,818.
US Referenced Citations (4)
Non-Patent Literature Citations (1)
Entry |
L.J. Greenstein, “Spectrum of a Binary Signal Block Coded for DC Suppression”, The Bell System Technical Journal, Jul.-Aug. 1974, pp. 1103-1106. |
Continuations (1)
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Number |
Date |
Country |
Parent |
09/217427 |
Dec 1998 |
US |
Child |
09/702914 |
|
US |