Pipelined temporal difference imager
Gruev, V.; Etienne-Cummings, R.
Electronics Letters
Volume 38, Issue 7, 28 Mar 2002 Page(s):315 - 317
Digital Object Identifier   10.1049/el:20020158
Summary:A 189×182 active pixel sensor for temporal difference computation is presented. The temporal difference imager, fabricated in an AM1 0.5 μm process, contains in-pixel storage elements for previous and current frames. A pipelined architecture for difference readout is implemented, allowing >200 fps, 42 dB signal-to-noise ratio images and 8-bit precision of the difference image. The chip consumes 30 mW at 50 fps from a 5 V power supply

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