Apparatus for reading and/or writing an optically readable infor

Details Apparatus for reading and/or writing an optically readable infor Apparatus for reading and/or writing an optically readable infor

1980-12-10

1983-12-27

Faber, Alan

Dynamic information storage or retrieval

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

Mechanism control by the control signal

369 44, 250202, G11B 700, G11B 2110

Patent

active

044234961

ABSTRACT:
An apparatus for reading and/or writing an optically readable information structure, arranged in information tracks, on a record carrier, comprises a beam deflection element which is controlled by a control signal obtained from a tracking servo system. The apparatus is provided with a position detection system for detecting the position of the deflection element, and the signal from this detection system is applied to an input of the servo system for generating a control signal which is independent of the position of the deflecting element.

REFERENCES:
patent: 3731098 (1973-05-01), Hunt
patent: 3931459 (1976-01-01), Korpel
patent: 4063287 (1977-12-01), Van Rosmalen
patent: 4123146 (1978-10-01), Dragt
patent: 4236232 (1980-11-01), Jansen
patent: 4344165 (1982-08-01), Akiyama

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