In the present invention, a drive circuit 12 drives a solid-state image-pickup element 11 in synchronism with a synchronizing signal generated by a synchronizing signal generation circuit 13, and the solid-state image-pickup element 11 issues an output signal prior to an end time of a horizontal blanking...http://www.google.es/patents/US5371540?utm_source=gb-gplus-sharePatente US5371540 - Digital-signal-processing camera
