Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1997-07-21
1999-03-09
Dinh, Tan
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
369 752, G11B 1100
Patent
active
058810307
ABSTRACT:
An optical disk apparatus is downsized. The optical disk apparatus comprises an optical disk drive mechanism having a rotating mechanism for rotating an optical disk and an optical head for optically reading data on the optical disk, and a circuit board. An analog circuit and a digital circuit are mounted upon a single surface on one side of the circuit board of the optical disk drive mechanism. This analog circuit includes a drive circuit for driving the optical head, and a read circuit for creating read data from detection signals of the optical head. The digital circuit includes a one chip LSI circuit having a processor for executing the main control, a memory connected to an internal address/data bus and used for processing of the processor, a logic circuit connected to the internal address/data bus for creating a timing gate for transmitting and receiving the data to and from the optical head, and a controller connected to the internal address/data bus and for performing interface control with a host apparatus.
REFERENCES:
patent: 5327417 (1994-07-01), Tanaka et al.
patent: 5329503 (1994-07-01), Ohmori et al.
patent: 5392273 (1995-02-01), Masaki et al.
patent: 5513166 (1996-04-01), Tokumitsu et al.
Dinh Tan
Fujitsu Limited
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