Disk medium whose track density is changed in a radial direction

Details Disk medium whose track density is changed in a radial direction Disk medium whose track density is changed in a radial direction

1997-07-07

1999-08-17

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

369 51, G11B 2102

Patent

active

059402377

ABSTRACT:
A disk apparatus includes a disk medium for recording information in a track provided on the disk medium, a rotation circuit for rotating the disk medium, and a head for recording-and-reproducing to-and-from the disk medium. The head further includes a recording head element and a reproducing head element arranged along the track at a given gap from each other. The disk apparatus further includes a driving control circuit for swinging the head to a given position in a radial direction of the disk medium. In the disk apparatus, the disk medium is formatted by changing a track pitch in the radial direction of the disk medium.

REFERENCES:
patent: 4669004 (1987-05-01), Moon et al.
patent: 4802033 (1989-01-01), Chi
patent: 4945427 (1990-07-01), Cunningham
patent: 5073833 (1991-12-01), Best
Submicron-Trackwidth Inductive/MR Composite Head--Hisasahi Takano, Hirotsugu Fukuoka, Mikio Suzuki, Kazuo Shiiki, Masahiro Kitada--Central Research Laboratory, Hitachi Ltd., IEEE Transactions Magnetic vol. 37, No.6, Nov. 1991. Kokubunji, Tokyo 185, Japan.
IBM Technical Disclosure Bulletin, vol. 33, No. 5, Oct. 1990--Zone Recording With Two-Head Slider.

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