Information processing apparatus in which a deflected light and

Details Information processing apparatus in which a deflected light and Information processing apparatus in which a deflected light and

1988-01-13

1989-08-01

Faber, Alan

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369 44, 369112, G11B 709

Patent

active

048539198

ABSTRACT:
This specification discloses an information processing method and apparatus in which light deflected by diffraction is caused to arrive at the surface of a recording medium and when recording or reproduction of information is to be effected by effecting focus control or tracking control of the deflected light on the surface of the recording medium by the utilization of the O-order light in the diffraction, the deflected light can be moved at a high speed on the recording medium and accurate focus or tracking control of the deflected light is possible.

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