Optical recording/reproducing apparatus

Details Optical recording/reproducing apparatus Optical recording/reproducing apparatus

1987-02-19

1989-01-10

Shoop, Jr., William M.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

369 44, 369 45, 369106, 369110, G11B 700

Patent

active

047978660

ABSTRACT:
A light beam for recording, reproducing, and erasing information is divided by a half mirror into a transmitted light beam directed to a recording medium and a light beam for detecting a position of a reflected movable optical pickup. Since no additional light source is necessary for detecting the position of the optical pickup the apparatus is small in size, low in cost and reduces the number of adjustments required when the optical pickup is replaced.

REFERENCES:
patent: 3721882 (1973-03-01), Helms
patent: 4501493 (1985-02-01), Kubota
patent: 4507766 (1985-03-01), Saimi et al.
patent: 4607358 (1986-08-01), Maeda et al.
patent: 4669071 (1987-05-01), Minami et al.
patent: 4742505 (1988-05-01), Takeuchi et al.

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