Solid-state image taking apparatus including photodiode and circ

Details Solid-state image taking apparatus including photodiode and circ Solid-state image taking apparatus including photodiode and circ

1994-06-14

1996-10-15

Garber, Wendy

Television

Camera, system and detail

Solid-state image sensor

348229, H04N 5335

Patent

active

055659152

ABSTRACT:
A solid-state image taking apparatus includes a photodiode converting incident light into a corresponding signal voltage. A measurement is given of a time until the signal voltage reaches a predetermined reference voltage. The measurement is executed by counting up pulses of a clock pulse signal during the time until the signal voltage reaches the reference voltage. The number of the counted pulses represents the time until the signal voltage reaches the reference voltage. The intensity of the incident light determines the time until the signal voltage reaches the reference voltage. Accordingly, the number of the counted pulses represents the intensity of the incident light.

REFERENCES:
patent: 5027217 (1991-06-01), Oshio et al.
patent: 5210612 (1993-05-01), Furuta et al.
patent: 5247367 (1993-09-01), Lee

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