Error correction verification method and apparatus using CRC che

Details Error correction verification method and apparatus using CRC che Error correction verification method and apparatus using CRC che

1995-06-06

1997-05-13

Baker, Stephen M.

Excavating

371 401, G11B 2018

Patent

active

056299494

ABSTRACT:
In an error correction method for rotating magnetic media, CRC check remainder bytes are generated by using input data from a read sector to obtain regenerated CRC bytes for the read sector, and adding the regenerated CRC bytes to incoming CRC bytes of the read sector. Error patterns for correcting errors in the read sector are generated. Both the CRC check remainder bytes and the error patterns are used for confirming that the error patterns accurately correct the errors in the read sector. The confirmation involves loading a predetermined number of the CRC check remainder bytes into a corresponding number of registers (1302). For each of a plurality of error patterns of the sector, the error pattern is added to the register (1302) having its CRC check remainder bytes affected by the error pattern. A determination is then made whether the contents of any of the registers (1302) indicates inaccurate correction of the errors.

REFERENCES:
patent: 4413339 (1983-11-01), Riggle et al.
patent: 4680746 (1987-07-01), Suzuki et al.
patent: 4703485 (1987-10-01), Patel
patent: 4777635 (1988-10-01), Glover
patent: 4782490 (1988-11-01), Tenengolts
patent: 4839896 (1989-06-01), Glover et al.
patent: 4949342 (1990-08-01), Shimbo et al.
patent: 5136592 (1992-08-01), Weng
patent: 5157669 (1992-10-01), Yu et al.
patent: 5172380 (1992-12-01), Odaka
patent: 5182752 (1993-01-01), DeRoo et al.
patent: 5241546 (1993-08-01), Peterson et al.
patent: 5267241 (1993-11-01), Kowal
patent: 5384786 (1995-01-01), Dudley et al.
patent: 5412666 (1995-05-01), Squires et al.
patent: 5422895 (1995-06-01), Nguyen et al.
patent: 5444719 (1995-08-01), Cox et al.
patent: 5465260 (1995-11-01), Zook
Chang et al., "Cyclic Memory Record Format Without Intrarecord Gaps", IBM Technical Disclosure Bulletin, vol. 19, No. 10, pp. 3890-3891, Mar. 1977.

Affiliated with

Also associated with

Rating

Error correction verification method and apparatus using CRC che does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Error correction verification method and apparatus using CRC che, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Error correction verification method and apparatus using CRC che will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1391498