Hybrid charge coupled CMOS image sensor having an...

Details Hybrid charge coupled CMOS image sensor having an... Hybrid charge coupled CMOS image sensor having an...

2006-05-16

2006-05-16

Le, Que T. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140RC

Reexamination Certificate

active

07045754

ABSTRACT:
An active pixel that incorporates elements of CCD technology into a CMOS image sensor is disclosed. Each pixel includes a reset transistor that resets a sense node. The active pixel includes an amplification transistor that is modulated by the signal on the sense node. A light sensing element, such as a photodiode, is provided and its signal is selectively read out by a transfer gate, selectively stored by a memory gate, and finally read out onto the sense node by a control gate. Underneath the memory gate is a memory well that acts as memory for the pixel and stores the signal output by the light sensing element.

REFERENCES:
patent: 6317154 (2001-11-01), Beiley

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