TY - GEN
T1 - A wide dynamic range CMOS image sensor based on a new gamma correction technique
AU - Hwang, Yeonseong
AU - Lee, Jangwoo
AU - Kim, Daeyun
AU - Song, Minkyu
PY - 2012
Y1 - 2012
N2 - Many kinds of wide dynamic range (WDR) CMOS Image Sensors (CIS) have been developed, such as a multiple sampling, a multiple exposure technique, and so on. However, those techniques have some drawbacks of noise increasing, large power consumption, and huge chip area. In this paper, a new Single-Slope ADC (SS-ADC) for gamma correction with a nonlinear counter is described. Since the proposed scheme is easily implemented with a simple algorithm, we can reduce power consumption and chip area drastically. Further, the new SS-ADC for gamma correction enhances the Dynamic Range (DR) by 24dB. The proposed ADC, which has been fabricated using a 0.13um CIS process, achieves a 57.6dB SNDR at 50kS/s.
AB - Many kinds of wide dynamic range (WDR) CMOS Image Sensors (CIS) have been developed, such as a multiple sampling, a multiple exposure technique, and so on. However, those techniques have some drawbacks of noise increasing, large power consumption, and huge chip area. In this paper, a new Single-Slope ADC (SS-ADC) for gamma correction with a nonlinear counter is described. Since the proposed scheme is easily implemented with a simple algorithm, we can reduce power consumption and chip area drastically. Further, the new SS-ADC for gamma correction enhances the Dynamic Range (DR) by 24dB. The proposed ADC, which has been fabricated using a 0.13um CIS process, achieves a 57.6dB SNDR at 50kS/s.
KW - CMOS image sensor
KW - Gamma correction ADC
KW - single-slope ADC
KW - wide dynamic range
UR - http://www.scopus.com/inward/record.url?scp=84873945480&partnerID=8YFLogxK
U2 - 10.1109/ISOCC.2012.6407057
DO - 10.1109/ISOCC.2012.6407057
M3 - Conference contribution
AN - SCOPUS:84873945480
SN - 9781467329880
T3 - ISOCC 2012 - 2012 International SoC Design Conference
SP - 131
EP - 134
BT - ISOCC 2012 - 2012 International SoC Design Conference
T2 - 2012 International SoC Design Conference, ISOCC 2012
Y2 - 4 November 2012 through 7 November 2012
ER -