Temporal change threshold detection imager

@article{Mallik2005TemporalCT,
  title={Temporal change threshold detection imager},
  author={Udayan Mallik and Matthew A. Clapp and Eui-Young Choi and Gert Cauwenberghs and Ralph Etienne-Cummings},
  journal={ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005.},
  year={2005},
  pages={362-603 Vol. 1}
}
A 90/spl times/90 active pixel sensor (APS) achieves 2% in-pixel change/motion detection at 30f/s consuming 4.2mW. The 6T2C 25/spl mu/m /spl times/ 25 /spl mu/m pixel in 0.5 /spl mu/m 2P3M CMOS provides intensity readout, detection of change events and polarities. Event address and APS value output are asynchronous, facilitating compression. The imager is intended for low-power low-bandwidth surveillance network applications. 

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