DSV control system

Details DSV control system DSV control system

1998-01-15

2000-01-11

Tokar, Michael

Coded data generation or conversion

Digital code to digital code converters

To or from minimum d.c. level codes

341 59, H03M 500, H03M 700

Patent

active

060140941

ABSTRACT:
A DSV (Digital Sum Value) control system for use in conversion of a sequence of m-bit digital data codes into at least first and second sequences of n-bit digital modulation codes using a plurality of modulation tables under the DVD (Digital Video Disc) standards, for example. The DSV control system outputs a sequence of modulation codes produced by selecting, in time sequence, one of the codes of the first sequence or one of the codes of the second sequence according to a select signal SB. The select signal SB is provided based on a DSV control enable flag indicating that DSV control enable codes of the first and second sequences will appear at a following address and a select signal SA indicating which of the DSV control enable codes of the first and second sequences should be selected in order to optimize a DSV of the outputted sequence of modulation codes.

REFERENCES:
patent: 4728929 (1988-03-01), Tanaka
patent: 5638064 (1997-06-01), Mori et al.
patent: 5870037 (1999-02-01), Okazaki et al.
patent: 5870040 (1999-02-01), Ando

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