Apparatus for reading signals out of solid-state image sensing device

摘要

A solid-state image sensing device compensates for reset noise by integrated correlated double sampling to determine a difference between a reference signal obtained in a feed through period and a video signal obtained in a video signal time period. The device reduces the effect of high-frequency noise through integration. The problem of small CCD output affecting the linearity of integration is compensated by an integration coefficient control device that controls an integration coefficient of an integrating circuit. The integration coefficient control device performs this control in dependence on an applied control signal. Under low light conditions, a control signal applied to the integration coefficient control device changes the integration coefficient so that an integrated value of the integrating circuit is enlarged. The enlarged integrated value of the integrating circuit provides improved linearity and makes the apparatus less susceptible to noise from other circuits.