Coded data generation or conversion – Digital code to digital code converters – To or from nrz codes
Patent
1996-04-05
1998-06-30
Williams, Howard L.
Coded data generation or conversion
Digital code to digital code converters
To or from nrz codes
341 59, H03M 506
Patent
active
057740780
ABSTRACT:
The information to be recorded is divided into 8-bit long data words. Each data word is then converted to 14-bit long code word. The code words are sequentially connected with a one-bit merging bit inserted between the code words to define a code bit sequence. The run-length of 0s in the code bit sequence is limited to be between 2 and 11. The one-bit merging bit normally takes a bit value of 0, but is changed to 1 when any one of the T.sub.min control or T.sub.max control is applied so as to accomplish the run-length limitation. The T.sub.min control is applied when the adjacent bits on both sides of the merging bit are 1s. The T.sub.max control is applied when trailing P bits of a code word preceding the merging bit and leading Q bits of a code word following the merging bit are all 0s, provided that P+Q.gtoreq.11, and in this case, at least either one of the P bits and Q bits has a bit sequence of (00000), and the bit sequence (00000) is changed to (00100).
REFERENCES:
patent: 4323931 (1982-04-01), Jacoby
patent: 4501000 (1985-02-01), Immink et al.
patent: 4703494 (1987-10-01), Ozaki et al.
patent: 4728929 (1988-03-01), Tanaka
patent: 4833471 (1989-05-01), Tokuume et al.
patent: 5151699 (1992-09-01), Moriyama
patent: 5155485 (1992-10-01), Sako et al.
patent: 5276674 (1994-01-01), Tanaka
patent: 5333126 (1994-07-01), Fukuda et al.
patent: 5365231 (1994-11-01), Niimura
A copy of an International Search Report issued in counterpart PCT application PCT/JP96/00879.
Patent Abstracts of Japan, vol. 12, No. 174 (P-612), May 24, 1988.
Patent Abstracts of Japan, vol. 9, No. 270 (E-353), Oct. 26, 1985.
Patent Abstracts of Japan, vol. 9, No. 258 (E-350), Oct. 16, 1985.
A Copy of an International Search Report issued in counterpart PCT application PCT/JP96/00878.
A Copy of an International Search Report issued in counterpart PCT application PCT/JP96/00880.
English Language Abstract of SHO 63-56610.
"Sequence-state Methods for Run-length-limited Coding", by P.A. Franaszek, was published on pp. 376-383 of IBM J. Res. Develop. in Jul., 1970.
Hirayama Koichi
Shimada Toshiyuki
Tanaka Shin-ichi
Yamada Hisashi
Kabushiki Kaisha Toshiba
Matsushita Electric - Industrial Co., Ltd.
Williams Howard L.
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