Patent ID: 6567123
Filing Date: 2003-05-20
Classification: H04N

Abstract:
An electronic camera comprising an image pick-up device, means for setting the photoelectric charge accumulation time of the image pick-up device, an image pick-up circuit for including gain control means, for processing a signal read out from the image pick-up device to obtain an image signal, and control signal processing means for obtaining a focus control signal, an exposure control signal and a white balance control signal from the image signal and selectively controlling individual signal processes,wherein in the control signal processing means, one signal is obtained among the focus control signal, exposure control signal, white balance control signal based on the image signal in a first photographing cycle and processed to obtain a desired control value of the first control signal; another signal other than the signal obtained in the first photographing cycle is obtained among the focus control signal, exposure control signal, white balance control signal based on the image signal in a second photographing cycle succeeding to the first photographing cycle and processed to obtain a desired control value of the second control signal, the above processes being executed repeatedly; and the desired control value is changed such that differential values between the desired control values of the same control signal as that obtained in the proceeding process are equally distributed over a plurality of photographing cycles existing in timings in which the desired control value is obtained and set.