Patent ID: 7990587

Claim:
An electronic endoscope including a video-scope with an image sensor, comprising: a light source that radiates illuminating light; a signal reading processor that alternately reads odd-line image-pixel signals and even-line image-pixel signals over a one-frame reading interval, when forming a still image based on one frame worth of image-pixel signals generated by a one-time exposure; a shading member that blocks the illuminating light; a driver comprising a solenoid that selectively arranges said shading member at a non-shading position that enables the illuminating light to pass and at a shading position that blocks the light; a rotary shutter having an aperture and a shading portion which alternately pass and block the illuminating light, the rotary shutter rotating in accordance with the one-frame reading interval; and a driving controller that controls said driver by outputting a sequence of pulse signals to the solenoid when forming a still image so as to position said shading member at the shading position for a shading-interval in the one-frame reading interval so as to cover the aperture, and position said shading member at the non-shading position for a remaining reading-interval.