Apparatus for reading an optical disk which controls track jumpi

Details Apparatus for reading an optical disk which controls track jumpi Apparatus for reading an optical disk which controls track jumpi

1988-04-28

1990-06-05

Richardson, Robert L.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 4411, 360 7806, G11B 7085, G11B 2108

Patent

active

049320130

ABSTRACT:
An apparatus for reading an optical disk having tracks extending tangentially includes a driving device for moving at least one light spot. A signal which indicates a deviation of the light spot from one of the tracks and a second circuit produces acceleration and deceleration signals. The driving device is controlled to accomplish a track jump of the light spot in accordance with the acceleration and deceleration signals. The second circuit produces the acceleration signal when a track jump is to be initiated and produces the deceleration signal when the ratio of the level of the tracking error signal to the peak value of the tracking error signal becomes equal to a predetermined value.

REFERENCES:
patent: 4057832 (1977-11-01), Kappert
patent: 4764860 (1988-08-01), Takao
patent: 4817069 (1989-03-01), Shigemori

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