Exposure controller for camera attached to electronic equipment

Details Exposure controller for camera attached to electronic equipment Exposure controller for camera attached to electronic equipment

2005-06-28

2005-06-28

Moe, Aung (Department: 2612)

Television

Camera, system and detail

Optics

C348S373000

Reexamination Certificate

active

06912006

ABSTRACT:
A photographic image is divided into a central area and a surrounding area and video signals for the central and surrounding areas are integrated by an area integrator circuit. When an operator of video camera attached to a notebook personal computer photographs himself or herself with an imager of the video camera pointing toward the operator, a control microcomputer causes an integration result for the central area to be multiplied by a larger weighting before both are summed. The control microcomputer generates exposure information according to a result and compares the exposure level indicated by this information with a reference level to control an electronic shutter of an imaging device and a gain of an amplifier circuit so that the exposure level matches the reference level, whereby the exposure of the video camera is adjusted to an appropriate level. When the imager points towards an object on the opposite side of the operator exposure control is performed as usual.

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