Error correction method and apparatus for disk drive emulator

Details Error correction method and apparatus for disk drive emulator Error correction method and apparatus for disk drive emulator

1997-08-26

2000-01-25

Teska, Kevin J.

G06F 9455

Patent

active

060186267

ABSTRACT:
An error correction system (10) is provided for correcting up to two bits per sector stored in a solid state non-volatile memory (12) which emulates a disk drive. The error correction system (10) includes an ECC/remainder generator (100), a bank of remainder registers (102), and a calculation circuit (104), all under supervision of a controller (106). During a write-to-memory operation, error correction system (10) generates ECC bytes for storage in the memory (12). In a write operation, an entire sector acquired from memory (12) is used to generate ECC check remainder bytes REM.sub.0 -REM.sub.3. The check remainder bytes REM.sub.0 -REM.sub.3 are utilized to generates syndromes S.sub.1, S.sub.3 and a factor S.sub.B, the syndromes in turn being used to obtain either one or two error location positions (.alpha..sup.L1, .alpha..sup.L2). The mathematical calculation circuit (104) not only generates the syndromes S.sub.1, S.sub.3 and factor S.sub.B, as well as the error location positions (.alpha..sup.L1, .alpha..sup.L2), but also generates the addresses of the bit errors in the sector (L1-64 [complemented], L2-64 [complemented].

REFERENCES:
patent: 4642759 (1987-02-01), Foster
patent: 4718064 (1988-01-01), Edwards et al.
patent: 5062042 (1991-10-01), Binkley et al.
patent: 5077736 (1991-12-01), Dunphy, Jr. et al.
patent: 5077737 (1991-12-01), Leger et al.
patent: 5131089 (1992-07-01), Cole
patent: 5218691 (1993-06-01), Tuma et al.
patent: 5289477 (1994-02-01), Lenta et al.
patent: 5291584 (1994-03-01), Challa et al.
patent: 5297148 (1994-03-01), Harari et al.
patent: 5359726 (1994-10-01), Thomas
patent: 5379305 (1995-01-01), Weng
patent: 5404361 (1995-04-01), Casorso et al.
patent: 5418752 (1995-05-01), Harari et al.
patent: 5428630 (1995-06-01), Weng et al.
patent: 5430859 (1995-07-01), Norman et al.
patent: 5438674 (1995-08-01), Keele et al.
patent: 5459742 (1995-10-01), Cassidy et al.
patent: 5459850 (1995-10-01), Clay et al.
patent: 5473765 (1995-12-01), Gibbons et al.
patent: 5479633 (1995-12-01), Wells et al.
patent: 5555402 (1996-09-01), Tuma et al.
"Byte-Wide ECC/CRC Code and Syndrome Calculator", IBM Technical Disclosure Bulletin, vol. 29, No. 5, Oct. 1986, pp. 2143-2145.

Affiliated with

Also associated with

Rating

Error correction method and apparatus for disk drive emulator 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 method and apparatus for disk drive emulator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Error correction method and apparatus for disk drive emulator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2322033