H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/243 (2006.01) H04N 1/21 (2006.01) H04N 5/235 (2006.01) H04N 5/77 (2006.01)
Patent
CA 2070745
ABSTRACT OF THE DISCLOSURE Techniques of video cameras or the like which may be effectively used with photo-camera, for instance, are disclosed. In response to the detection of a greater image pick-up signal level change than a predetermined extent, a shutter pulse is generated. In addition, in response to the shutter button operation, the blanking area of image is increased or reduced to provide a special effect of indicating the shutter operation. The output signal of an optical sensor having the same characteristic as the image pick-up device is integrated, and when the integral signal exceeds a predetermined value, the AGC circuit gain is reduced to a predetermined extent to prevent the image pick-up signal level from being excessively increased. Further, when the integral signal exceeds a predetermined value, a read pulse is supplied to the image pick-up device, thus permitting charge accumulation time increase in the image pick-up device to increase the sensitivity without leading to saturation of the charge accumulation. - 94 -
Hashimoto Hiroyuki
Ishii Satoshi
Saito Haruo
Aiwa Co. Ltd.
Hashimoto Hiroyuki
Ishii Satoshi
Kirby Eades Gale Baker
Saito Haruo
LandOfFree
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