Optical information recording/reproduction apparatus and method

Details Optical information recording/reproduction apparatus and method Optical information recording/reproduction apparatus and method

1994-10-26

1997-02-04

Hindi, Nabil

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369112, G11B 700

Patent

active

056006136

ABSTRACT:
In an optical information recording/reproducing apparatus, relative movement between an optical head and an optical information recording medium having a linear track is performed to cause a light beam irradiated by the optical head to follow the information track so as to effect recording/reproduction of information. The apparatus is provided with an ultrasonic wave motor for driving one of the recording medium and the optical head relative to each other. The ultrasonic wave motor is controlled to gradually decrease a drive velocity thereof at the end of a drive operation thereof and to gradually increase the drive velocity thereof at the beginning of the drive operation thereof by properly adjusting an amplitude of a drive signal to be supplied to the ultrasonic wave motor.

REFERENCES:
patent: 4853919 (1989-08-01), Miyawaki et al.
patent: 4982394 (1991-01-01), Kanda et al.
patent: 5050146 (1991-09-01), Richgels et al.
patent: 5241522 (1993-08-01), Yanagi
patent: 5331621 (1994-07-01), Miyake et al.
Patent Abstracts of Japan, vol. 016, No. 459, English Abstract of Japanese Patent No. 4-161076, Yamaguchi, Sep. 24, 1992.
Patent Abstracts of Japan, vol. 13, No. 200, English Abstract of Japanese Patent No. 1-021688, Ishidu, May 12, 1989.

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