Optical information recording apparatus including error checking

Details Optical information recording apparatus including error checking Optical information recording apparatus including error checking

1979-12-20

1981-12-29

Konick, Bernard

Dynamic information storage or retrieval

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

Mechanism control by the control signal

371 10, G11B 700

Patent

active

043086128

ABSTRACT:
In apparatus wherein a predetermined information signal is recorded on an optical disk by the use of a light beam; an information recording apparatus characterized by provision of a light detector for detecting reflected light caused by the reflection of the light beam by the optical disk, and a checking circuit for detecting the duration for which a maximum peak value of the output from the light detector exists, the recorded state of information on the optical disk being detected on the basis of the output from the detector by the checking circuit.

REFERENCES:
patent: 3365706 (1968-01-01), King
patent: 3696344 (1972-10-01), Feinleib et al.
patent: 3731290 (1973-05-01), Aagard
patent: 3795791 (1974-03-01), Boyer
patent: 4145758 (1979-03-01), Drexler et al.

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