Resolving block method for synchronization correction in run-len

Details Resolving block method for synchronization correction in run-len Resolving block method for synchronization correction in run-len

1997-12-09

1999-10-05

Hoff, Marc S.

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

341 94, H03M 1300

Patent

active

059631520

ABSTRACT:
An efficient method and apparatus corrects synchronization problems in the recovery data stored on magnetic media. Resolving blocks are inserted into the unconstrained data string at specified intervals. A resolving block is constructed to do two things: reset the encoding automaton and produce in the constrained data string blocks which allow correction of synchronization. Before decoding, synchronization is corrected. The constrained data string is decoded, and then the resolving block removed. The blocks are inserted before run-length limited encoding occurs and deleted after run-length limited decoding takes place. The run-length limited encoder and decoder are unchanged.

REFERENCES:
patent: 4833470 (1989-05-01), Iketani
patent: 5220568 (1993-06-01), Howe et al.
patent: 5623477 (1997-04-01), Shimada et al.
patent: 5682153 (1997-10-01), Ishiguro
patent: 5815514 (1998-09-01), Gray

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