Television – Camera – system and detail – Solid-state image sensor
Reexamination Certificate
2011-03-29
2011-03-29
Hannett, James M (Department: 2622)
Television
Camera, system and detail
Solid-state image sensor
Reexamination Certificate
active
07916199
ABSTRACT:
A pixel includes a photodiode, an overflow circuit, a first sensing circuit, and a second sensing circuit. The first sensing circuit charges and discharges a cathode capacitance by a photocurrent flowing through a photodiode, and amplifies an obtained voltage by a source follower amplifier so as to be outputted to a data line. The second sensing circuit charges and discharged the cathode capacitance by the photocurrent flowing through the photodiode, and outputs electric charge stored in the cathode capacitance via the data line. A pixel circuit is configured so that a first mode in which the first sensing circuit becomes active and a second mode in which the second sensing circuit becomes active can be switched. The first mode and the second mode are switched according to an amount of light received by the photodiode included in each pixel circuit. Gain is controlled according to the amount of light received, in the first mode, and the storage time is controlled in the second mode.
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Kagawa Keiichiro
Nose Yugo
Ohta Jun
Takashima Hajime
Wada Atsushi
Hannett James M
Institute of Science and Technology Sanyo Electric Co., Ltd.
McDermott Will & Emery LLP
National University Corporation Nara
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