Television – Camera – system and detail – Solid-state image sensor
Reexamination Certificate
2008-08-20
2011-11-22
Ye, Lin (Department: 2622)
Television
Camera, system and detail
Solid-state image sensor
C348S300000, C327S094000
Reexamination Certificate
active
08063961
ABSTRACT:
Provided is a dual sampling/pixel gain amplifier (CDS/PxGA) circuit with a shared amplifier, and more particularly, to a dual CDS/PxGA circuit for adjusting a gain of an amplifier based on capacitance. The dual CDS/PxGA circuit comprises: a first sampler for sampling a reset level and a data level of a first pixel; a second sampler for sampling a reset level and a data level of a second pixel; and an operational amplifier for receiving sampling values from the first and second samplers, calculating output signals of the first and second pixels using the sampling values, and amplifying the calculated output signals. Thus, it is possible to reduce a speed of an operational amplifier by using the dual CDS/PxGA structure, reduce power consumption by sharing the operational amplifier, and obtain a variable gain of a wide range by adjusting capacitance using a capacitor array.
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Cho Young Kyun
Jeon Young Deuk
Kim Jong Dae
Kwon Chong Ki
Chen Chia-Wei A
Electronics and Telecommunications Research Institute
Ye Lin
LandOfFree
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