Patent ID: 6538693
Filing Date: 2003-03-25
Classification: H04N

Abstract:
A photoelectric conversion apparatus, comprising:photoelectric conversion circuit including a photo-receiving portion for receiving a photosignal from an object, converting the photosignal into an electric signal, and accumulating charges generated thereby; reset circuit for resetting said photo-receiving portion; noise signal holding circuit for holding reset noise caused when a resetting operation of said photo-receiving portion by said reset circuit is executed while the charges are being accumulated in said photo-receiving portion; and noise signal removing circuit for performing a difference operation between a first signal and a second signal, wherein the first signal includes the reset noise held in said noise signal holding circuit, and the second signal includes the reset noise and a signal generated by receiving the photosignal in a first period after completion of the resetting operation, and wherein said noise signal removing circuit performs the difference operation while said photo-receiving portion accumulates the charges after a reset of said photo-receiving portion which is performed by said reset circuit after the signal generated by receiving the photosignal in said first period is read out from said photo-receiving portion.