Method and apparatus for detecting the transfer of a wrong secto

Details Method and apparatus for detecting the transfer of a wrong secto Method and apparatus for detecting the transfer of a wrong secto

1996-11-26

1997-12-09

Baker, Stephen M.

Excavating

G06F 1110, G11B 2018

Patent

active

056967756

ABSTRACT:
A method and apparatus for detecting the transfer of a wrong sector uses the LBA to ensure that a correct sector is transferred. The LBA may be appended to the sector data during a write operation and verified during a read operation. Preferably, the LBA is embedded into the CRC block during a write operation and used to detect the transfer of a wrong sector during a read operation. The LBA may be embedded within the CRC, before or after it is transmitted to a CRC Generator/Checker, by Exclusive-ORing the sector data or CRC data with the LBA. During a read operation, the incoming CRC is Exclusive-ORed with the expected LBA of the sector being read, thereby eliminating the LBA from the CRC data. The CRC data is then checked by the CRC Generator/Checker and an error is signalled if the CRC data does not match. Using the method and apparatus of the present invention, the LBA may also be embedded in the CRC during format and minimal latency operations. Off-line sector identification is performed by extracting the LBA from the CRC for formats with and without an ID field.

REFERENCES:
patent: 3375507 (1968-03-01), Gleim et al.
patent: 4209809 (1980-06-01), Chang et al.
patent: 4297737 (1981-10-01), Andresen et al.
patent: 4434487 (1984-02-01), Rubinson et al.
patent: 4498146 (1985-02-01), Martinez
patent: 4504873 (1985-03-01), Bandy et al.
patent: 4507693 (1985-03-01), Matsuda et al.
patent: 4656532 (1987-04-01), Greenberg et al.
patent: 4736341 (1988-04-01), Redmond et al.
patent: 4814903 (1989-03-01), Kulakowski et al.
patent: 4827423 (1989-05-01), Beasley et al.
patent: 4847705 (1989-07-01), Weng et al.
patent: 4914530 (1990-04-01), Graham et al.
patent: 4924331 (1990-05-01), Robinson et al.
patent: 4935825 (1990-06-01), Worrell et al.
patent: 5075804 (1991-12-01), Deyring
patent: 5111444 (1992-05-01), Fukushima et al.
patent: 5172381 (1992-12-01), Karp et al.
patent: 5182752 (1993-01-01), DeRoo et al.
patent: 5200864 (1993-04-01), Dunn et al.
patent: 5200959 (1993-04-01), Gross et al.
patent: 5233618 (1993-08-01), Glider et al.
patent: 5235585 (1993-08-01), Bish et al.
patent: 5255136 (1993-10-01), Machado et al.
patent: 5270877 (1993-12-01), Fukushima et al.
patent: 5270979 (1993-12-01), Harari et al.
patent: 5271018 (1993-12-01), Chan

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