Disk drive having fine and coarse control of the read/write head

Details Disk drive having fine and coarse control of the read/write head Disk drive having fine and coarse control of the read/write head

1982-08-04

1985-04-23

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 2110

Patent

active

045133328

ABSTRACT:
A disk drive having a head actuator that is capable of quick, fine adjustments in position of the transducing head in order to precisely follow data tracks. A magnetic read/write head (2) is mounted on a first arm (4) so that it can move generally along a radius of a disk (8). A rotary motor (12) is used to spin the disk. A primary motor (36) in conjunction with a cable (42) and drum (40) is used to move the arm-mounted head in coarse movements across the disk. A secondary motor (32) in conjunction with a second arm (34) is used to move the arm-mounted head in fine movements across the disk. The primary motor may be used for track jumping, while the secondary motor may be used for track following.

REFERENCES:
patent: 3119989 (1964-01-01), Wasylenko
patent: 3199092 (1965-08-01), Hoffman
patent: 4151569 (1979-04-01), Hathaway
patent: 4151570 (1979-04-01), Ravizza et al.
patent: 4188645 (1980-02-01), Ragle et al.
patent: 4399477 (1983-08-01), Bryer
patent: 4453243 (1984-06-01), Tanaka et al.

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