Each pixel has a photoelectric conversion unit configured to convert light into electrical charges and to store the electrical charges, an amplifying unit configured to amplify a signal based on the electrical charges stored in the photoelectric conversion unit and to output the signal to an output line,...http://www.google.com.au/patents/US7817199?utm_source=gb-gplus-sharePatent US7817199 - Photoelectric conversion apparatus, control method thereof, imaging apparatus, and imaging system
