RLL code generation method for data storage device and recoding method therefor
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United States of America Patent
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Aug 3, 1999
Grant Date -
N/A
app pub date -
Oct 31, 1997
filing date -
Oct 31, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A run length limited (RLL) code generation method for a data storage device is provided. In the RLL code generation method for generating a predetermined number of bit codewords, sequences of 16-bit data are received, and then sequences of 17-bit codewords are produced, wherein the sequences of 17-bit codewords has a first predetermined number of successive zeros as a maximum run length of zeros, and the sequences of 17-bit codewords include two subsequences each having a second predetermined number of successive zeros as a maximum run length of zeros. Thus, the RLL code generation method is helpful for an equalizer and provides a high recording density as well as a higher signal transmission rate compared to a rate 8/9(0,4/4) coding method.
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