Patent ID: 11956557
Assignee: BAE SYSTEMS IMAGING SOLUTIONS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. An image sensor, comprising:
a pixel array having at least one column of addressable pixels;
a column amplifier coupled to the at least one column of addressable pixels;
an analog-to-digital converter (ADC) coupled to the column amplifier; and
a processor coupled to the ADC;
wherein the at least one column of addressable pixels includes at least one pixel that comprises
a photodetector;
a transfer gate coupled to an output of the photodetector; and
a gain mode select block coupled to an output of the transfer gate, wherein the gain mode select block comprises
a first switch coupled between a first node and a second node, the first node coupled to a first capacitor and the second node coupled to a second capacitor, and
a second switch coupled between the second node and a third node, the third node coupled to a third capacitor, wherein the third capacitor has a higher capacitance than the second capacitor, and the second capacitor has a higher capacitance than the first capacitor.