High rate coding for media noise

Details High rate coding for media noise High rate coding for media noise

2007-09-25

2007-09-25

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

C341S051000, C341S058000

Reexamination Certificate

active

11359453

ABSTRACT:
An apparatus has a conversion circuit, a precoder circuit, and a selection circuit. The conversion circuit converts user data b1, b2, b. . . bkto a coded sequence c0, c1, c2. . . cq. The selection circuit selects c0in the coded sequence c0, c1, c2. . . cqsuch that the output of the precoder circuit has less than a maximum number q of transitions. The conversion circuit may include an encoder circuit to convert user data b1, b2, b3. . . bkto a sequence c1, c2. . . cq, and a transition minimization circuit to add c0to the sequence c1, c2. . . cq. The apparatus may have a circuit to add at least one additional bit, which may be a parity bit, to the coded sequence c0, c1, c2. . . cq.

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