公开(公告)号：US3624428A

公开(公告)日：1971-11-30

申请号：US3624428D

申请日：1970-03-20

Applicant: RCA CORP

Inventor： WEIMER PAUL KESSLER ,  SHALLCROSS FRANK VANLOON

IPC: H04N5/335 ,  H01L27/102 ,  H01L27/146 ,  H03K17/00

CPC classification number: H01L27/14681 ,  H01L27/1023

Abstract: A signal processing circuit employing an array of photodetector elements, with each element including a phototransistor having a capacitor coupled to the base region. The base-collector junction integrates incident light flux in response to an electromagnetic input, while the emitter-base diode serves as a switch when the element is sampled, to provide an electric output representative of the integrated light. The capacitor provides charge storage during the period between light flux integration and sampling.