Code conversion and demodulation apparatus, a method thereof, an

Details Code conversion and demodulation apparatus, a method thereof, an Code conversion and demodulation apparatus, a method thereof, an

1996-04-12

1998-03-17

Gaffin, Jeffrey A.

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

341 58, 341 61, H03M 700

Patent

active

057292248

ABSTRACT:
Source data each consisting of m-bits can be converted into conversion codes each consisting of n (>m) bits with ease, and reverse conversion thereof can be performed with ease. The code conversion and the reverse conversion can be characterized in terms of a series of tables.
The current input source data and the next input source data are respectively taken in by registers. Whether or not the run length at a connecting portion between consecutive source data satisfies conditions is determined by a control unit, and a table to be used is selected to finally obtain a conversion code.

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Franaszek, "Sequence-state Methods for Run-length-limited Coding", IBM J. Res. Develop., Jul. 1970, pp. 376-383.

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