Television – Camera – system and detail – Solid-state image sensor
Reexamination Certificate
2008-02-25
2010-11-02
Chan, Jason (Department: 2622)
Television
Camera, system and detail
Solid-state image sensor
C348S241000, C348S320000, C348S322000
Reexamination Certificate
active
07825975
ABSTRACT:
An image sensor and a method for using the same are disclosed. The image sensor includes an array of pixel sensors, a signal digitizing circuit, and a digitizing controller. The array of pixel sensors includes a plurality of pixel sensors. Each pixel sensor includes a photodetector, a charge conversion circuit, and a gate transistor. The charge conversion circuit generates a voltage signal that is related to a charge on the photodiode, and the gate transistor couples the voltage signal to a bit line in response to a first signal. The signal digitizing circuit converts the voltage signal to a plurality of output digital values. Each output digital value has a different level of digitization noise. One of the output digital values is selected for output in response to an output selection signal that is generated by the digitizing controller.
REFERENCES:
patent: 4525741 (1985-06-01), Chahal et al.
Chan Jason
Fairchild Imaging, Inc.
Kao Yih-Sien
Ward Calvin B.
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