Optical disk drive and read/write apparatus

Details Optical disk drive and read/write apparatus Optical disk drive and read/write apparatus

1992-09-28

1994-07-05

Casaregola, Louis J.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

369 13, 369244, G11B 700

Patent

active

053274172

ABSTRACT:
In order to provide an optical disk drive and read/write apparatus, the time of erasure, recording and reproduction of data by which is shortened to heighten the apparatus in access speed and data transfer speed, in the apparatus according to the present invention, an optical disk 4 is clamped to a turntable 2 supported with bearings 24 by a housing, and an optical head 5 is movably supported by the housing so as to face the disk. Four such optical heads 5 are disposed at equiangular intervals on a circle, and controlled independently of each other to perform the erasure, recording and reproduction of data from and in the disk 4 so as to make the apparatus much higher in access speed and data transfer speed than in the case that only one optical head is used.

REFERENCES:
patent: 4058834 (1977-11-01), Miyaoka
patent: 5072432 (1991-12-01), Tanaka
patent: 5149617 (1992-09-01), Gotoh et al.
patent: 5182734 (1993-01-01), Watanabe
patent: 5182735 (1993-01-01), Kurtz
patent: 5208792 (1993-05-01), Imanaka

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