| 摘要 |
<p>Use of a half of packets of the vertical CCD register for signal A and the residual half for signal B to obtain two image information items results in reduction to a half vertical resolution, and so, to prevent the reduction, in an electronic still camera which uses a general CCD image sensing element and a mechanical shutter for shielding the incident light irradiated onto the light receiving plane of the image sensing element, the start of the first accumulation time A of a photodiode of the CCD image sensing element is determined by shutter operation of an electronic shutter or a mechanical shutter, the end of the first accumulation time A and the start of the second accumulation time B are determined by read operation of the signal charge from the photodiode to the vertical CCD register, the end of the second accumulation time B is determined by the shutter operation of the mechanical shutter, and the second signal charge corresponding to the second accumulation time B is accumulated and held in the photodiode until the first signal charge corresponding to the first accumulation time A is transferred and the electric charge packet of the vertical CCD register becomes empty. <IMAGE></p> |
