Magnetic disk certifier

Details Magnetic disk certifier Magnetic disk certifier

1997-07-17

1998-09-22

Canney, Vincent P.

Excavating

G06F 1100

Patent

active

058125604

ABSTRACT:
A magnetic disk certifier according to the present invention is featured by comprising a write circuit for writing a test data having a period which is 1
of a bit period of the test data, error of which is to be detected, in a magnetic disk, where n is an integer equal to or larger than 2, a read-out circuit for reading out the test data written in the magnetic disk, a comparator circuit for producing a detection signal by comparing a read-out signal read out from the read-out circuit with a predetermined signal or a predetermined reference level and an error detector circuit for detecting an error by receiving the detection signal from the comparator circuit with a period which is n times the bit period of the test data written in the magnetic disk, a bit data of an error detected by the error detector circuit being used as an error signal by converting each bit of the bit data into n bits.

REFERENCES:
patent: 5519857 (1996-05-01), Kato et al.

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