Dynamic information storage or retrieval – Dynamic mechanism subsystem – Having power driven transducer assembly
Patent
1997-12-29
1999-11-09
Cao, Allen T.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Having power driven transducer assembly
369249, G11B 1730, G11B 1700
Patent
active
059827351
ABSTRACT:
An adjustment mechanism for use in a compact disc recording/reproducing device, which operates with a laser beam of a laser incident on a disc, the adjustment mechanism comprising: a base; a pick-up head, carrying the laser; a first guiding rod and a second guiding rod, guiding a movement of the pick-up head, being parallel to each other and forming a plane with an orientation with respect to the disc that determines the angle of incidence of the laser beam; and at least three supports, extending upward from the base, each holding one end of the first and second guiding rods. Each of the at least three supports comprises a main body, mounted on the base, a spring, pressing from below on the supported end, and an adjusting screw, mounted in a threaded vertical hole in the main body, leaning on the supported end from above, such that the supported end has a well-defined vertical position, which is adjusted by turning the adjusting screw. By adjusting the at least three supports, the orientation of the plane is adjusted to ensure a proper angle of incidence of the laser beam, so as to avoid reading errors.
REFERENCES:
patent: 5615204 (1997-03-01), Watanabe et al.
patent: 5687159 (1997-11-01), Kim
patent: 5761182 (1998-06-01), Jeon
patent: 5764618 (1998-06-01), Kim
patent: 5768248 (1998-06-01), Lee
Cao Allen T.
Industrial Technology Research Institute
Liauh W. Wayne
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