CMOS image capture device with self-correcting gain...

Details CMOS image capture device with self-correcting gain... CMOS image capture device with self-correcting gain...

2007-05-15

2007-05-15

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C348S246000, C348S294000, C348S308000, C341S155000

Reexamination Certificate

active

11279141

ABSTRACT:
A CMOS image capture device includes an array of pixel elements configured to convert an image received as light at a surface thereof into analog output signals. An image processing circuit is also provided. The image processing circuit is configured to generate digital output signals from which the image can be recreated in response to the analog output signals. The image processing circuit has self-adjustable gain characteristics. The image processing circuit includes a ramp signal generator having an integration circuit therein with an adjustable RC time constant. The integration circuit includes an operational amplifier and a resistor array and/or a capacitor array electrically coupled to the operational amplifier. This resistor array and/or capacitor array enables the adjustable RC time constant.

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