Photoreceptor matrix for optical video playback system

Details Photoreceptor matrix for optical video playback system Photoreceptor matrix for optical video playback system

1974-11-01

1977-01-04

Konick, Bernard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

178 67A, 1791003V, 250201, 178 66DD, 358128, 358130, H04N 576, G11B 700

Patent

active

040014940

ABSTRACT:
A matrix of four photoreceptors is arranged to develop output signals representing information stored in a video disc as well as error signals for maintaining proper tracking registration of the reading beam with the storage track of the disc. The matrix enables all four photoreceptors to contribute to the development of the output signals and permits separate treatment of high frequency and low frequency signal information for improved results with respect to response and signal-to-noise ratio.

REFERENCES:
patent: 3381086 (1968-04-01), Moss
patent: 3530258 (1970-09-01), Gregg
patent: 3634689 (1972-01-01), Ejiri
patent: 3854015 (1974-12-01), Janssen
patent: 3876827 (1975-04-01), Janssen
"An Experimental Optical Videodisc Playback System" by G. Hrbek; July 1974, Journal of the SMPTE vol. 83.

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