CCD imaging array with improved charge sensing circuit

Details CCD imaging array with improved charge sensing circuit CCD imaging array with improved charge sensing circuit

2006-11-07

2006-11-07

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C348S301000

Reexamination Certificate

active

07132638

ABSTRACT:
An imaging array having a CCD imaging array that includes a plurality of pixels that accumulate charge when exposed to light and a readout amplifier is disclosed. The readout amplifier includes an operational amplifier having an input and an output port and a feedback capacitor connecting the input and output ports and a variable impedance path between the input and output ports, the path having an impedance controlled by a reset signal. A reset signal generator generates the reset signal in three sequential phases in which the path between the input and output ports has three impedance values to provide a starting voltage at the amplifier input prior to the measurement of charge from each pixel that has reduced noise.

REFERENCES:
patent: 4556910 (1985-12-01), Tisue
patent: 5461425 (1995-10-01), Fowler et al.
patent: 5771070 (1998-06-01), Ohzu et al.
patent: 6339363 (2002-01-01), Fowler
patent: 6424375 (2002-07-01), Fowler
patent: 6459078 (2002-10-01), Fowler
patent: 6515701 (2003-02-01), Clark et al.
patent: 6614312 (2003-09-01), Fowler
patent: 6757018 (2004-06-01), Fowler
patent: 6885331 (2005-04-01), Krymski
patent: 2004/0195491 (2004-10-01), Machida

Affiliated with

Also associated with

Rating

CCD imaging array with improved charge sensing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CCD imaging array with improved charge sensing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CCD imaging array with improved charge sensing circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3701683