Optical disk player having beam correction means

Details Optical disk player having beam correction means Optical disk player having beam correction means

1991-03-04

1995-11-28

Epps, Georgia Y.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4429, 369 4432, 369 4434, 369 4435, 369 4436, 369 4441, G11B 700

Patent

active

054714460

ABSTRACT:
An optical disk player having a tracking servo apparatus and a focusing servo apparatus. By amplifying a focusing error at a predetermined gain and adding it to a tracking error, the rolling which occurs due to a mass balance distortion of a pickup is electrically suppressed. Thus, an adverse influence on the tracking servo by the rolling upon focusing driving can be prevented.

REFERENCES:
patent: 4118736 (1978-10-01), Okada et al.
patent: 4497047 (1985-01-01), Fujiie et al.
patent: 4775967 (1988-10-01), Shimada et al.
patent: 5050149 (1991-09-01), Ishii et al.
patent: 5050155 (1991-09-01), Kurata et al.
patent: 5060216 (1991-10-01), Suzuki et al.

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