Data modulation method, and recording and reproducing...

Coded data generation or conversion – Digital code to digital code converters – To or from run length limited codes

Reexamination Certificate

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C341S058000, C341S060000

Reexamination Certificate

active

06930619

ABSTRACT:
A method of and an apparatus for modulating data to be resistant to channel distortion. A space extending encoder performs a first code transformation to extend a run length of digitized data to a predetermined length and outputs the space-extended data. A multiplexer multiplexes the space-extended data and data transformed by a predetermined second code transformation. A format converter converts the multiplexed data into a predetermined format which is suitable for writing to a recording medium. The apparatus and method enable recorded data to be resistant to channel distortion, enable the data to be recorded with increased recording density, and enable the data written to the recording medium to be reproduced with improved reliability.

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patent: 2002-197812 (2002-07-01), None

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