Block-Based Low-Power CMOS Image Sensor with a Simple Pixel Structure
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this paper, we propose a block-based low-power complementary metal oxide semiconductor (CMOS) image sensor (CIS) with a simple pixel structure for power efficiency. This method, which uses an additional computation circuit, makes it possible to reduce the power consumption of the pixel array. In addition, the computation circuit for a block-based CIS is very flexible for various types of pixel structures. The proposed CIS was designed and fabricated using a standard CMOS 0.18 μm process, and the performance of the fabricated chip was evaluated. From a resultant image, the proposed block-based CIS can calculate a differing contrast in the block and control the operating voltage of the unit blocks. Finally, we confirmed that the power consumption in the proposed CIS with a simple pixel structure can be reduced.
Abstract
In this paper, we propose a block-based low-power complementary metal oxide semiconductor (CMOS) image sensor (CIS) with a simple pixel structure for power efficiency. This method, which uses an additional computation circuit, makes it possible to reduce the power consumption of the pixel array. In addition, the computation circuit for a block-based CIS is very flexible for various types of pixel structures. The proposed CIS was designed and fabricated using a standard CMOS 0.18 μm process, and the performance of the fabricated chip was evaluated. From a resultant image, the proposed block-based CIS can calculate a differing contrast in the block and control the operating voltage of the unit blocks. Finally, we confirmed that the power consumption in the proposed CIS with a simple pixel structure can be reduced.
참고문헌 (18)
- 김경도, "Charge Pump 회로를 이용한 능동 픽셀 센서의 동작 범위 개선", 센서학회지, 17(2), pp.114~119 (2008), 한국센서학회
- 이수연, "내장된 전송 게이트를 가지는 n-well", gate가 연결된 구조의 PMOSFET형 광검출기의 동작 범위 확장, 2010, pp.19(4), 328~335[DOI]
- 서민웅, "출력 전압 피드백을 통한 능동 화소 센서의 동작 범위 확장", 센서학회지, 18(4), pp.274~279 (2009), 한국센서학회
- 공재성, "이중 샘플링 기반의 넓은 동작 범위 CMOS 이미지 센서의 동작 및 시뮬레이션을 통한 특성 분석", 센서학회지, 19(4), pp.285~290 (2010), 한국센서학회
- H. Y. Hyun, "Low-noise logarithmic active pixel sensor using a gate", N-well-tied PMOSFET-type photodetector, 2008, pp.20(7), 381~387
- S. H. Seo, "Optical characteristics of an n-well", gate-tied PMOSFET-type photodetector with built-in transfer gate for CMOS image sensor, 2007, pp.19(7), 435~444
- 배명한, "A Wide Dynamic Range CMOS Image Sensor Based on a Pseudo 3-Transistor Active Pixel Sensor Using Feedback Structure", 센서학회지, 21(6), pp.413~419 (2012), 한국센서학회[DOI]
- S. Mendis, "CMOS active pixel image sensor", IEEE Transactions on Electron Devices, 41(3), pp.452~453 (1994)
- E. Fossum, "CMOS image sensors: Electronic camera on a chip", IEEE Transactions on Electron Devices, 44(10), pp.1689~1698 (1997)
- M. Bigas, "Review of CMOS image sensors", Microelectronics Journal, 37, pp.433~451 (2006)
- Y. Ardeshirpour, "2-D CMOS based Image sensor system for fluorescent detection", Canadian Conference on Electrical and Computer Engineering, 3, pp.1441~1444 (2004)
- N. Kawai, "Noise analysis of high-gain, low-noise column readout circuits for CMOS image sensors", IEEE Transactions on Electron Devices, 51(2), pp.185~194 (2004)
- K. B. Cho, "A 1.2 V micropower CMOS active pixel image sensor for portable applications", IEEE Solid-State Circuits Conference, pp.114~115 (2000)
- Fish, "Low-power smart CMOS image sensors", IEEE International Symposium on Circuits and Systems, pp.1408~1411 (2008)
- Fish, "Low power CMOS image sensors employing adaptive bulk biasing control (AB2C) approach", IEEE International Symposium on Circuits and Systems, pp.2834~2837 (2007)
- Inoue, "Low-leakage-current and low-operating-voltage buried photodiode for a CMOS imager", IEEE Transactions on Electron Devices, 50(1), pp.43~47 (2003)
- Q. Gao, "A low-power block-based CMOS image sensor with dual VDD", IEEE Sensors Journal, 12(4), pp.747~755 (2012)
- N. Donckers, "Design of complementary low-power CMOS architectures for loosertake-all and winner-take-all", MicroNeuro, pp.360~365 (1999)