Image pickup device providing decreased image lag

Details Image pickup device providing decreased image lag Image pickup device providing decreased image lag

1993-03-03

1994-12-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

348310, H04N 1028, H01L 2714

Patent

active

053767829

ABSTRACT:
When a forward or reverse voltage is applied to two diodes 1 and 2 connected in series in the same direction, the junction CP of the two diodes is switched for a comparatively low-impedance state to a high-impedance state or vice versa, so that a photoelectric transducer 3 connected to the junction CP is brought to either a reset or storage state. With an improved image pickup device having this construction, the impedance at the junction CP can definitely be held at low level in all instances without being influenced by the amount of illumination on the photoelectric transducer 3, whereby it can be saturated within a predetermined reset time so as to prevent the generation of residual charges.

REFERENCES:
patent: 4728802 (1988-03-01), Baron
patent: 4945419 (1990-07-01), Arques
patent: 5160836 (1992-11-01), Miyake

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