Track address pattern for a disk memory apparatus

Details Track address pattern for a disk memory apparatus Track address pattern for a disk memory apparatus

1991-05-20

1993-12-28

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Address coding

360 7708, 360 48, 360 7814, G11B 509

Patent

active

052745104

ABSTRACT:
A track address pattern suitable for being applied to a magnetic disk apparatus which positions a head to a track with a desired address by a sector servo system, for example, wherein a gray code of a plurality of bits corresponding to a track address of the magnetic disk apparatus is divided per 2 bits thereof into groups, the respective groups of 2 bits are converted into codes of 3 bits (001), (010), (100) and (111) depending on the values thereof, respectively, whereby the converted codes are recorded on the magnetic disk as the track address pattern.

REFERENCES:
patent: 4032984 (1977-06-01), Kaser et al.
patent: 4530019 (1985-07-01), Penniman
patent: 4777542 (1988-10-01), Ozaki
patent: 4823212 (1989-04-01), Knowles et al.
patent: 4977472 (1990-12-01), Volz et al.
patent: 5047880 (1991-09-01), Ohno

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