Method and apparatus for fault-tolerant identification of the he

Details Method and apparatus for fault-tolerant identification of the he Method and apparatus for fault-tolerant identification of the he

1993-03-25

1995-01-10

Trammell, James

Excavating

360 49, G11B 2018

Patent

active

053814240

ABSTRACT:
A method and apparatus for fault-tolerant identification of a particular header field of a recording device. Each one of a plurality of headers is a different value encoded into a codeword according to predetermined generator polynominal. A target codeword having a number of symbols is generated. The generated target codeword is identical to a target header codeword. The target header codeword is read to generate a readback codeword having a number of symbols. The target codeword and the readback codeword are compared and the difference between the number of symbols is counted. A not-target-header signal is generated when the difference exceeds a predetermined number corresponding to an error correction capacity of the generator polynominal.

REFERENCES:
patent: 4802169 (1989-01-01), Suzuki et al.
patent: 5172380 (1992-12-01), Odaka
patent: 5237574 (1993-08-01), Weng

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