Variable quantization ADC for image sensors

Details Variable quantization ADC for image sensors Variable quantization ADC for image sensors

2006-12-12

2006-12-12

Nguyen, Linh (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S161000, C341S162000

Reexamination Certificate

active

07148831

ABSTRACT:
An A/D converter suitable for use in a system in which the signal power of noise increases with the signal power of the signal, such as an imaging system, utilizes a variable quantization system for converting analog signals into digital signals. The variable quantization is controlled so that at low signal levels the quantization is similar or identical to conventional A/D converters, while the quantization level is increased at higher signal levels. Thus, higher resolution is provided at low signal levels while lower resolution is produced at high signal levels.

REFERENCES:
patent: 5886659 (1999-03-01), Pain et al.
patent: 5920247 (1999-07-01), Pischinger et al.
patent: 5920274 (1999-07-01), Gowda et al.
patent: 6469739 (2002-10-01), Bechtel et al.
patent: 6518910 (2003-02-01), Sakuragi et al.
patent: 6545624 (2003-04-01), Lee et al.
patent: 6670904 (2003-12-01), Yakovlev
patent: 6720999 (2004-04-01), Holberg et al.
patent: 6829012 (2004-12-01), Tarnoff et al.
patent: 6864820 (2005-03-01), Nakamura et al.
M. Sasaki, et al., “A Wide Dynamic Range CMOS Image Sensor with Integration of Short-Exposure-Time Signals,” 2003 IEEE Workshop, May 15-17, 2003.
R. Johansson, et al., “A Multi-Resolution 100 GOPS 4 Gpixels/s Programmable CMOS Image Sensor for Machine Vision,” 2003 IEEE Workshop, May 15-17, 2003.

Affiliated with

Also associated with

Rating

Variable quantization ADC for image sensors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable quantization ADC for image sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable quantization ADC for image sensors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3714308