Television – Camera – system and detail – Still and motion modes of operation
Reexamination Certificate
2007-09-11
2007-09-11
Vu, Ngoc-Yen (Department: 2622)
Television
Camera, system and detail
Still and motion modes of operation
C348S362000, C348S373000
Reexamination Certificate
active
09891267
ABSTRACT:
An exposure control device accurately adjusts exposure even when photographing the operator. An area-integration circuit divides a photographed image into a central area and a peripheral area to integrate corresponding video signals for the respective areas. When the operator of a notebook personal computer sets the direction of an image pickup unit to photograph himself a control microcomputer multiplies the respective areas by weights so that the weight of the central area is larger than the others, and then it adds the two integration results. The control microcomputer sets the addition result as exposure information, compares the exposure level indicated by the information with a reference level, controls an electronic shutter of an image pickup device and a gain of an amplifier circuit so that the exposure level coincides with the reference level, and adjusts the exposure of a video camera to a proper level. When the image pickup unit is set in the direction opposite to the operator, the conventional exposure control is performed.
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Kananen Ronald P.
Rader & Fishman & Grauer, PLLC
Vu Ngoc-Yen
Yoder, III Chriss S
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