Optical image acousto-electric reading device

Details Optical image acousto-electric reading device Optical image acousto-electric reading device

1978-12-22

1980-09-30

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358201, 310322, H04N 530

Patent

active

042258871

ABSTRACT:
An acousto-electric analysis device for an optical image in one or two dimensions. It comprises a piezoelectric substrate and a semi-conductor substrate with a diode network on the face which is opposite the piezoelectric substrate. The optical image is projected on this face and causes each of the diodes to discharge as a function of the luminous intensity received at each point. A high frequency acoustic pulse, which propagates on the piezoelectric substrate, enables the diodes to be recharged by supplying a video signal representing the analysis of the image projected.

REFERENCES:
patent: 4084192 (1978-04-01), Defranould et al.

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