Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2006-03-30
2008-08-26
Epps, Georgia Y. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C348S308000, C348S294000
Reexamination Certificate
active
07417212
ABSTRACT:
Solid-state image-sensing device for acquisition of sensed-image data is described. A photoelectric converter disconnecting switch is turned on to make a forcible reset switch perform resetting. Then, the logarithmic conversion MOS transistor is reset according to the threshold voltage thereof. Then, an output commensurate with the amount of light incident on the photoelectric converter is delivered. The photoelectric converter disconnecting switch is turned on to perform resetting and then turned off. Then, the voltage at the end of the logarithmic conversion MOS transistor that is not connected to the photoelectric converter disconnecting switch is reset according to its threshold voltage. This provides an output unrelated to the incident light. With this sequence of operations, variations in sensitivity among individual pixels can be corrected for without irradiation with uniform light.
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Chinese “Notice of Office Action” dated Feb. 29, 2008, for counterpart Chinese Application No. 200610073709.X; Together with an English-language translation thereof.
Kakumoto Tomokazu
Throngnumchai Kraisorn
Bennett Jennifer
Epps Georgia Y.
Konica Minolta Holdings Inc.
Nissan Motor Co,. Ltd.
Sidley Austin LLP
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