Encoding apparatus and method, recording medium and program

Details Encoding apparatus and method, recording medium and program Encoding apparatus and method, recording medium and program

2006-02-28

2006-02-28

Young, Brian (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from minimum d.c. level codes

Reexamination Certificate

active

07006018

ABSTRACT:
A code sequence is encoded using a code conversion table in which the parity of the code sequence varies until the code states become equal to each other. The code word assignment used in this code conversion table is such that the decoded code word constraint length is 3 blocks and q0≠q1for an arbitrary information sequence is satisfied even if a DC control bit is inserted at any of the first and second bits of an information word. For example, code states s0and s1when information sequences d0and d1resulted from insertion of provisional DC control bits1and0inserted at the top of an information sequence “1, 1, 0, 0, 0, 1, 0” are encoded starting with a state3according to a predetermined code conversion table are equal to each other, namely, s0=s1=6, in a third block, and two's complement q0of a sum of code sequences c0up to a time when the code states are equal to each other is “0” while two's complement q1of a sum of code sequences c1up to that time is “1”. That is, the condition that q0≠q1is met. The present invention can be applied to a recorder/player or encoder.

REFERENCES:
patent: 5703580 (1997-12-01), Ko

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