Smart APS pixel with full frame self-storage and motion detection capabilities

Shi-bin Zhao; Su-ying Yao; Jiang-tao Xu; Hong-le Li

doi:10.1117/12.836620

6 August 2009 Smart APS pixel with full frame self-storage and motion detection capabilities

Shi-bin Zhao, Su-ying Yao, Jiang-tao Xu, Hong-le Li

Proceedings Volume 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications; 73842R (2009) https://doi.org/10.1117/12.836620
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

A novel APS pixel with full frame self-storage and motion detection capabilities is proposed in this paper. Taking advantage of adding the independent exposure transistor, the FD node of traditional 4T pixel can be used for temporarily storing the integrated charge between two successive frames. Before the current frame's reset operations, the charge of previous frame will been readout and compared with the subsequent signal of current frame to locate the motion pixel in the motion detection comparators which is integrally shared by columns and have a lower load capacitor and higher gain than the previously published counterparts. The pixel and its peripheral circuit are designed and simulated using SMIC 0.18μm MM/RF 1P6M process. The simulation indicates that the image sensor using proposal design can achieve the motion detection without obvious reduction of fill factor and have a higher accuracy of detection and lower power consumption, which is more suitable to the application of surveillance and remote video communication network.

Citation Download Citation

Shi-bin Zhao, Su-ying Yao, Jiang-tao Xu, and Hong-le Li "Smart APS pixel with full frame self-storage and motion detection capabilities", Proc. SPIE 7384, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, 73842R (6 August 2009); https://doi.org/10.1117/12.836620

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KEYWORDS

Motion detection

Transistors

Amplifiers

Signal detection

Capacitors

Image processing

Image compression

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