White balance using combined feedback and external color information for control

摘要

The disclosed image sensing apparatus includes a first circuit for forming a first signal to control gains of various color signals included in the outputs of an image sensing device in accordance with the levels of the various color signals, a second circuit for forming a second signal to control the gains of the various color signals in accordance with a color temperature of an object to be photographed, and a gain control circuit for controlling and determining the gains of the various color signals by mixing the first and second signals formed by the first and second circuits, in which a high accurate white balance adjustment is effected and the variation of the color temperature of the object is followed.