Track jump control means for a disk apparatus

Details Track jump control means for a disk apparatus Track jump control means for a disk apparatus

1993-07-16

1996-01-02

Gonzalez, Frank

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4434, G11B 700

Patent

active

054815177

ABSTRACT:
The disk drive apparatus of the present invention has an optical pickup that jumps a track to perform track jumping when a jumping voltage is impressed, and that traces a track by performing brake operation when a braking voltage is applied, and actuator that drives the optical pickup, a signal processing part that performs focus and tracking control with respect to the optical pickup, a movement time measurement part that measures the movement time when a light beam emitted from the optical pickup is moved to cross a track to a required track, a voltage control part that uses the results of measurement to generate parameters and a voltage value that is applied to the actuator, a storage part that stores voltage value that is generated by the voltage value setting part, and that after a disk is loaded, first stores data of that disk in the storage part and uses those data values according to the track jump operation.

REFERENCES:
patent: 4057832 (1977-11-01), Kappert
patent: 4899325 (1990-02-01), Katsuhara et al.
patent: 5046058 (1991-09-01), Shimonou

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