CHARGE TRANSFER DEVICE OUTPUT PROCESSING CIRCUIT

摘要

PURPOSE:To resolve problems following a sample holding action by executing a prescribed processing to a transfer output including a reference level part and an information signal part within respective transfer periods in a time series without using a sample/hold circuit. CONSTITUTION:An image pickup output signal SV outputted from a solid-state image pickup element 11 is supplied through a buffer amplifying part 43 to a first delaying part 44. A first delaying part 44 has four output terminals to delay for a prescribed time and an image output SV and four above- mentioned delaying outputs SV1-SV4 from a buffer amplifying part 43 are supplied to a first non-adding mixing part 45. The first non-adding mixing part 45 forms a synthesizing information signal SVa having a level in accordance with a maximum amplitude level in respective information signal parts of the image pickup output signal SV and the delaying signals SV1-SV4 and sends it to a subtracter 46. To the subtracter 46, a synthesizing signal SRa of a reference level part obtained from a second delaying part 51 and a second non-adding mixing part 52 is supplied.