Self-triggering CMOS image sensor

Details Self-triggering CMOS image sensor Self-triggering CMOS image sensor

2007-10-30

2010-10-12

Chan, Jason (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S302000, C348S294000

Reexamination Certificate

active

07812879

ABSTRACT:
An image sensor and method for using the image sensor to capture an image are disclosed. The image sensor includes an imaging array, a first block amplifier and a controller. A first plurality of pixels in the imaging array includes pixels having a photodiode connected to a first node by a gate transistor, a reset transistor connected between the first node and a reset node, a pixel amplifier having an input connected to the first node and an output, and an output gate for connecting the pixel amplifier output to an output bus. The sensor has a monitoring mode and an image capture mode. In the monitoring mode the reset node is connected to the first block amplifier whose output is monitored and used to trigger the image capture mode when the output exceeds a predetermined threshold.

REFERENCES:
patent: 5539457 (1996-07-01), Tsunai
patent: 6040570 (2000-03-01), Levine et al.
patent: 6348681 (2002-02-01), Kindt et al.
patent: 6424375 (2002-07-01), Fowler
patent: 6452633 (2002-09-01), Merrill et al.
patent: 6498331 (2002-12-01), Kozlowski et al.
patent: 2002/0024605 (2002-02-01), Merrill et al.

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