Digital double sampling method, a related CMOS image sensor,...

Details Digital double sampling method, a related CMOS image sensor,... Digital double sampling method, a related CMOS image sensor,...

2011-08-09

2011-08-09

Giles, Nicholas G (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C341S155000, C341S164000, C341S169000, C348S241000

Reexamination Certificate

active

07995123

ABSTRACT:
A digital double sampling method, a related complementary metal oxide semiconductor (CMOS) image sensor, and a digital camera comprising the CMOS image sensor are disclosed. The method includes generating first digital data corresponding to an initial voltage level apparent in a pixel in response to a reset signal, inverting the first digital data, outputting a detection voltage corresponding to image data received from outside of the CMOS image sensor, and counting in synchronization with a clock signal, starting from an initial value equal to the inverted first digital data, and for an amount of time responsive to a voltage level of the detection voltage.

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