Optical reporting reproducing device having fixed and movable op

Details Optical reporting reproducing device having fixed and movable op Optical reporting reproducing device having fixed and movable op

1994-01-25

1995-08-22

Epps, Georgia Y.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369112, 369 4432, 369 4417, 369119, G11B 700

Patent

active

054446830

ABSTRACT:
An optical record reproducing device including a movable optical system for moving along a radial direction of an optical disc, a separated optical system including a light source and a separated fixed optical system, a tracking control system having a reflective mirror for reflecting a laser beam irradiated from the light source toward the movable optical system and an accurate angular displacement mechanism including an angular displacement detector for directly detecting an angular displacement of the reflective mirror so as to control the movable optical system accuarately.

REFERENCES:
patent: 4268129 (1981-05-01), Araki
patent: 4564757 (1986-01-01), LaBudde et al.
patent: 4719614 (1988-01-01), Leterme et al.
patent: 4744071 (1988-05-01), Bricot et al.
patent: 4768180 (1988-08-01), Janssen et al.
patent: 4782474 (1988-11-01), Arai et al.
patent: 4799206 (1989-01-01), Imanaka
patent: 5131744 (1992-07-01), Kaneko et al.
patent: 5140572 (1992-08-01), Kibune et al.

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