Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1997-12-30
1999-09-07
Huber, Paul W.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4419, 369 4421, 369 4422, G11B 700
Patent
active
059497440
ABSTRACT:
An optical pickup apparatus for recording/reproducing an information onto/from an optical disc. The optical pickup apparatus comprises a base having a first shaft and a second shaft, an object lens holder rotatably coupled to the first shaft in such a manner that the holder linearly moves along the first shaft, a first object lens for a compact disc and a second object lens for a digital versatile disc which are disposed in the object lens holder, and a pickup section having a first end rotatably coupled to the second shaft and a second end disposed below the object lens holder, the pickup section recording/reproducing the information onto/from the optical disc by using the first and second object lenses. The pickup section is coupled to the second shaft so as to allow the pickup section to be positioned below the first and second object lenses. The object lens holder of the optical pickup apparatus moves minutely when the apparatus records/reproduces an information onto/from an optical disc. Thereby, a performance of the optical pickup apparatus is enhanced.
REFERENCES:
patent: 5648951 (1997-07-01), Kato et al.
Japanese Abstract, 08-221779, vol. 96, No. 12, 1996.
Japanese Abstract, 08-287501, vol. 97, No. 3, 1996.
Shinoda et al, "Optical Pick-Up for DVD", IEEE Transactions on Consumer Electronics, vol. 42, No. 3, Aug., 1996.
Daewoo Electronics Co. Ltd
Huber Paul W.
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