Optical information processing apparatus

Details Optical information processing apparatus Optical information processing apparatus

1987-09-02

1989-03-07

McElheny, Jr., Donald

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369116, G11B 7125

Patent

active

048111945

ABSTRACT:
There is disclosed an optical information processing apparatus comprising a scan device for effecting the recording and/or reproduction of information by scanning an optical record medium with a light beam spot, a detector for detecting the relative speed between the medium and the beam spot, and a controller for bringing the beam spot to a defocus state on the medium when the relative speed is detected to be a below a predetermined value.

REFERENCES:
patent: 4419750 (1983-12-01), Howe
patent: 4656617 (1987-04-01), Nakatsuyama et al.
patent: 4757487 (1988-07-01), Yanagida et al.

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