| 摘要 |
PROBLEM TO BE SOLVED: To prevent wobbling at regular intervals, in the focusing control method of a lens in a video camera. SOLUTION: A luminance signal derivation S7 obtained by differentiating the luminance signals S6 of photographic pictures and the luminance level volume obtained by integrating the luminance signals of one frame of the photographic pictures are calculated. A change in the luminance signal derivation S7 and the luminance level volume is monitored to detect the change in the photographic pictures and when the change in the photographic pictures is detected, the lens 11 of the video camera 1 has a wobbling operation. |
