An image sensor includes a plurality of active pixel sensors arranged in an array. Each active pixel sensor includes a photosensor that generates a sensor signal nominally indicative of an intensity of light incident on the photosensor and a follower-type amplifier that couples the sensor signal to an...http://www.google.fr/patents/US6794627?utm_source=gb-gplus-shareBrevet US6794627 - Aggregation of active pixel sensor signals
