Magnetic disk apparatus, recording medium, and accessing method

Details Magnetic disk apparatus, recording medium, and accessing method Magnetic disk apparatus, recording medium, and accessing method

1994-10-26

1997-06-03

Kim, W. C.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 51, 360 76, G11B 509, G11B 500

Patent

active

056360754

ABSTRACT:
There is used a disk medium in which tracks are divided into a plurality of zones in the radial direction and information is read and written with a constant linear density by using a clock signal of a different frequency every zone. A drive unit forms a dead space corresponding to at least one track at a zone boundary of the disk medium and reads or writes the information. In the case where it is judged that the head passes through the zone boundary by the seeking operation to the cylinder address position instructed from an upper apparatus, the cylinder address instructed from the upper apparatus is corrected on the basis of the number of boundary passing times and the seeking operation is performed.

REFERENCES:
patent: 5018095 (1991-05-01), Nissimov
patent: 5053897 (1991-10-01), Ikeshita
patent: 5193034 (1993-03-01), Tsuyoshi et al.
patent: 5331492 (1994-07-01), Komai et al.
patent: 5341361 (1994-08-01), Hosaka

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