X-ray sensor array

Details X-ray sensor array X-ray sensor array

1990-04-03

1991-07-02

Berman, Jack I.

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

25037001, 2502081, 357 32, G01T 120, H01L 3110

Patent

active

050287885

ABSTRACT:
A plurality of phototransistors are connected in a matrix of rows and columns. Light falling on the phototransistors discharges the interelectrode capacitance between the emitter and collector of each phototransistor. Each phototransistor is permitted to discharge for a given period of time. A current source then charges the interelectrode capacitance back to its original level. The amount of time taken to recharge the interelectrode capacitance is a function of the intensity of the light falling on that phototransistor.

REFERENCES:
patent: Re32164 (1986-05-01), Kruger
patent: 3624428 (1971-11-01), Weimer et al.
patent: 3675025 (1972-07-01), Feldman et al.
patent: 3937965 (1976-02-01), Vasseur
patent: 4064440 (1977-12-01), Roder
patent: 4075492 (1978-02-01), Boyd et al.
patent: 4153839 (1979-05-01), Hounsfield et al.
patent: 4160167 (1979-09-01), Weiss et al.
patent: 4181856 (1980-01-01), Bone
patent: 4366382 (1982-12-01), Kotowski
patent: 4426721 (1984-01-01), Wang
patent: 4430568 (1984-02-01), Yoshida et al.
patent: 4484340 (1984-11-01), Yamaguchi et al.
patent: 4504962 (1985-03-01), Moore
patent: 4535243 (1985-08-01), Peschmann
patent: 4542519 (1985-09-01), Sugimoto
patent: 4543490 (1985-09-01), Gupta
patent: 4583240 (1986-04-01), Gatten et al.
patent: 4665283 (1987-05-01), Kable et al.
patent: 4678938 (1987-07-01), Nakamura
patent: 4952996 (1990-08-01), Nishizawa et al.
patent: 4962412 (1990-10-01), Shinohara et al.
patent: 4967067 (1990-10-01), Hashimoto et al.

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