Method for correcting added and lost bits in a hard disk...

Details Method for correcting added and lost bits in a hard disk... Method for correcting added and lost bits in a hard disk...

2006-11-15

2009-11-03

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

C360S048000

Reexamination Certificate

active

07612959

ABSTRACT:
A hard disk drive with an encoder that writes data onto a disk in accordance with a plurality of first codes. Each code contains a plurality of digital bits. The first codes are selected so that if a bit is added or dropped during a write or read process the resulting bitstream can only be one of the selected first codes. This allows the bitstream to be accurately decoded to detect and correct for the added/dropped bit.

REFERENCES:
patent: 6005727 (1999-12-01), Behrens et al.
patent: 6115198 (2000-09-01), Reed et al.
patent: 6167550 (2000-12-01), Gray
patent: 2003/0007270 (2003-01-01), Bliss et al.
H.C. Ferreira et al., Insertion/Delection Correction, IEEE Transactions on Information Theory, vol. 43, No. 2, Mar. 1997.
Eiichi Tanaka et al., Synchronization and Substitution Error-Correcting Codes for the Levenshtein Metric, IEEE Transactions on Information Theory, vol. IT22, No. 2, Mar. 1976.

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