Optical pickup and optical disc device for accessing media of di

Details Optical pickup and optical disc device for accessing media of di Optical pickup and optical disc device for accessing media of di

1997-01-21

2000-03-28

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4437, 369 58, 369 4441, 369 4429, G11B 7095

Patent

active

060440481

ABSTRACT:
An optical pickup in an optical disc device configured for recording and/or reproducing signal on or from an optical disc. The optical pickup is configured for setting the orientation of a bending mirror directing the optical path of a light beam radiated from a light source towards the optical disc so that the optical path between the reflecting surface of the mirror and the photodetector is approximately 45 relative to the recording track of the optical disc. With the above configuration of the optical pickup, focusing error signals and tracking error signals of plural discs of different types can be detected by a common photodetector.

REFERENCES:
patent: 4779255 (1988-10-01), Sugiyama et al.
patent: 5065381 (1991-11-01), Takahashi
patent: 5235583 (1993-08-01), Jongenelis et al.
patent: 5619482 (1997-04-01), Tezuka et al.
patent: 5708636 (1998-01-01), Takahashi et al.

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