Method and apparatus for implementing PRML codes with maximum on

Details Method and apparatus for implementing PRML codes with maximum on Method and apparatus for implementing PRML codes with maximum on

1992-01-31

1993-03-23

Pellinen, A. D.

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

375 18, H03M 746

Patent

active

051968495

ABSTRACT:
Apparatus and methods are provided for encoding a predefined number of bits of binary data into codewords having a predefined number of bits for a partial-response maximum-liklihood (PRML) data channel in a direct access storage device (DASD). Rate 8/9 block codes having maximum ones and run length constraints (0,8,12,.infin.) and (0,8,6,.infin.) provide timing and gain control and reduced susceptibility to misequalization effects in PRML channels.

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patent: 4833470 (1989-05-01), Iketani
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