Apparatus of high dynamic-range CMOS image sensor and method...

Details Apparatus of high dynamic-range CMOS image sensor and method... Apparatus of high dynamic-range CMOS image sensor and method...

2005-08-26

2009-10-20

Shingleton, Michael B (Department: 2815)

Active solid-state devices (e.g., transistors, solid-state diode

Test or calibration structure

C257S431000, C257S459000, C257S461000, C348S308000

Reexamination Certificate

active

07605398

ABSTRACT:
The present invention discloses an apparatus of high dynamic-range CMOS image sensor and method thereof. The present invention utilize a pixel circuit outputting an output signal, wherein the pixel circuit has a photodiode and a plurality of transistors; and utilize a current source as a charge supplement unit to supply current into one end of the photodiode, and providing charges to the parasitic capacitor of the photodiode to delay saturation in the pixel circuit. In addition, a feedback circuit can be further designed connecting the pixel circuit. The feedback circuit receives the output signal from the pixel circuit and then outputs a control signal according to the output signal of the pixel circuit to control status of the charge supplement unit, and thereby increasing the dynamic range of the CMOS image sensor.

REFERENCES:
patent: 2005/0285959 (2005-12-01), Nakajima et al.
patent: WO03/094110 (2003-11-01), None

Affiliated with

Also associated with

Rating

Apparatus of high dynamic-range CMOS image sensor and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus of high dynamic-range CMOS image sensor and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus of high dynamic-range CMOS image sensor and method... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4071905