Apparatus for optically reconstructing information

Details Apparatus for optically reconstructing information Apparatus for optically reconstructing information

1976-02-26

1977-09-27

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358132, 358213, 358216, H04N 586

Patent

active

040515281

ABSTRACT:
Optical information reconstructing apparatus comprising a disc having at least one surface on which groups of dots bearing information are concentrically or spirally arrayed, a mechanism for rotating the disc, a light source for projecting a light beam on the array of groups of dots, and at least one photodetector for detecting diffracted light waves from the groups of dots, characterized in that a semiconductor laser array is used as the light source and that the light emission is switched from one laser source to another in the laser array in tracking the information.

REFERENCES:
patent: 3795902 (1974-03-01), Russell
patent: 3854005 (1974-12-01), Castrignano
patent: 3856987 (1974-12-01), McMann
patent: 3932862 (1976-01-01), Graven
patent: 3962688 (1976-06-01), Westerberg
patent: 3971002 (1976-07-01), Bricot

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