Television – Camera – system and detail – Solid-state image sensor
Reexamination Certificate
2005-04-19
2005-04-19
Christensen, Andrew (Department: 2615)
Television
Camera, system and detail
Solid-state image sensor
C348S294000, C348S302000, C250S208100
Reexamination Certificate
active
06882367
ABSTRACT:
A storage pixel sensor disposed on a semiconductor substrate comprises a photodiode having a first terminal coupled to a first potential and a second terminal. A barrier transistor has a first terminal coupled to the second terminal of the photodiode, a second terminal and a control gate coupled to a barrier set voltage. A reset transistor has a first terminal coupled to the second terminal of the barrier transistor, a second terminal coupled to a reset reference potential that reverse biases the photodiode, and a control gate coupled to a source of a RESET signal. A photocharge integration node is coupled to said second terminal of said barrier transistor. The photocharge integration node comprises the control gate of a first source-follower transistor. The first source-follower transistor is coupled to a source of bias current and has an output. A capacitive storage node is coupled to the output of the first source-follower transistor and comprises the control gate of a second source-follower transistor having an output. An exposure transistor is coupled between the output of the first source-follower transistor and a global current-summing node and has a control gate coupled to a saturation level voltage.
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Dong Milton B.
Lyon Richard F.
Merrill Richard B.
Turner Richard M.
Christensen Andrew
Foveon, Inc.
Sierra Patent Group Ltd.
Ye Lin
LandOfFree
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