Optical information recording/reproducing apparatus

Details Optical information recording/reproducing apparatus Optical information recording/reproducing apparatus

1990-08-02

1992-03-31

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4412, 369112, 2502015, G11B 700, G01J 120

Patent

active

051013894

ABSTRACT:
An optical information recording/reproducing apparatus comprises a semi-reflecting means which receives a emitted laser light emitted from a light source, which reflect partially the received laser light toward an optical information recording medium in order to record an information, and which transmits a reflected laser light reflected by the optical information recording medium, a separating means which has the semi-reflecting means on one surface thereof, which diffracts a part of the transmitted laser light, transmits the other part of the transmitted laser light, and then subsequently diffracts said diffracted light again to produce twice diffracted light and transmits said transmitted light again to produce twice transmitted light, and a detecting means which detects the diffracted laser light and the transmitted laser light to thereby generate an information reproduction signal, a track error signal and a focus error signal.

REFERENCES:
patent: 3698795 (1972-08-01), Flint
patent: 4475792 (1984-08-01), Sica, Jr.
patent: 4768183 (1988-08-01), Ohnishi et al.
patent: 4918679 (1990-04-01), Opheij et al.

Affiliated with

Also associated with

Rating

Optical information recording/reproducing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical information recording/reproducing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical information recording/reproducing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2264426