Device for controlling recording track jump operations with over

Details Device for controlling recording track jump operations with over Device for controlling recording track jump operations with over

1984-04-05

1987-06-30

Cardillo, Raymond F.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 33, 369 41, 369 44, 369 46, G11B 7013, G11B 709, G11B 2108

Patent

active

046776028

ABSTRACT:
A device for controlling recording track jump operations includes a tracking servo loop which is activated when a data detecting point is traversed from an initial recording track on a recording disk to a target recording track. Circuitry is provided for accurate compensation in the event of overshooting the target recording track. A jump signal generating circuit may also be provided to reduce the frequency of generated traverse signals from a first frequency level to a second, lower frequency level when the data detecting point is a selected number of recording tracks away from the target recording track, or to gradually reduce the speed which the data detecting point traverses the recording tracks as the data detecting point moves from the initial recording track to the target recording track.

REFERENCES:
patent: 4138663 (1979-02-01), Lehureau et al.
SMPTE Journal, Feb. 1977, vol. 86, pp. 80-83, Mathieu, "A Random Access System . . . ".

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