Image sensor with memory

Details Image sensor with memory Image sensor with memory

1987-02-24

1988-11-01

Westin, Edward P.

Radiant energy

Automatic/serial detection of similar sources

250211R, 250578, 358111, G03G 516

Patent

active

047822279

ABSTRACT:
Image sensor with memory and, more especially, image sensor with reading by thermal effect.
This sensor comprises mainly a layer of a photoconductive material and a layer of a transparent material, the impedance of which varies with the temperature, these two layers being comprised between two electrodes. Furthermore, a voltage generator can be connected to the electrodes during the recording when the device is illuminated. Finally, a charge amplifier can be used to detect a current when the unit is heated.

REFERENCES:
patent: 3148354 (1964-09-01), Schaffert
patent: 3601610 (1971-08-01), Nakamura
patent: 3681765 (1972-08-01), Chapman
patent: 3681766 (1972-08-01), Chapman et al.
patent: 3693171 (1972-09-01), Asam
patent: 3975637 (1976-08-01), Ikedo et al.
patent: 4142206 (1979-02-01), Ennulat
patent: 4268750 (1981-05-01), Cowart
patent: 4508966 (1985-04-01), Oberschmid et al.
patent: 4521808 (1985-06-01), Ong et al.
Ferroelectrics, vol. 10, 1976, pp. 15-18, London, GB; F. Micheron et al.: "A Ferroelectric Image Memory".

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