Optical disc apparatus for recording and reproducing signals on

Details Optical disc apparatus for recording and reproducing signals on Optical disc apparatus for recording and reproducing signals on

1991-02-15

1993-05-25

Psitos, Aristotelis

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Access of multiple storage elements

369 772, G11B 2104

Patent

active

052146340

ABSTRACT:
An optical disk apparatus for a double-sided optical disk has an optical pickup unit for reproducing information from the optical disk, and base members carrying driving unit for shifting the pickup unit and a guide mechanism for guiding the movement of the pickup unit. The drive of the pickup unit is conducted through a timing belt, and different reduction systems are used for reproducing operation of the optical pickup unit and for the shifting of the optical pickup unit from one to the other sides of the disk, by the operation of a switching mechanism for effecting switching between these reduction systems, such that, during the reproduction, the optical pickup unit is moved finely to provide a high resolution, whereas the shifting of the optical pickup unit from one to the other side of the disk is effected at a high speed. The motor as the power source therefore can operate at a low speed, thus reducing levels of vibration and noise.

REFERENCES:
patent: 4216969 (1990-08-01), Allen
patent: 4839881 (1989-06-01), Takahara et al.
patent: 4903140 (1990-02-01), Okamoto et al.
patent: 4953154 (1990-08-01), Takahara et al.

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