Modulation methods and systems

Details Modulation methods and systems Modulation methods and systems

2006-11-28

2006-11-28

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

C341S050000

Reexamination Certificate

active

07142135

ABSTRACT:
In a high-density optical storage system, data words are modulated into code words in a manner of minimizing the fluctuation of the digital sum value (DSV). A cumulative DSV is calculated for each possible value of a DSV control bit. The DSV control bit is determined to minimize the absolute cumulative DSV when detecting at least one subsequent DSV control bit or after a predetermined delay. A corresponding code word is generated according to the determined current DSV control bit.

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