Digital color video camera with auto-focus, auto-exposure and au

Details Digital color video camera with auto-focus, auto-exposure and au Digital color video camera with auto-focus, auto-exposure and au

1991-02-01

1992-03-03

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, 35821319, 358227, 358228, H04N 5238, H04N 973

Patent

active

050937162

ABSTRACT:
A color video camera providing a digital video signal has an auto-focus detector, an auto-exposure detector and an auto-white balance detector formed as sections of an optical detector circuit which further has serial input and output ports common to the auto-focus, auto-exposure and auto-white balance detectors, and a system controller which is common to the auto-focus, auto-exposure and auto-white balance detectors and provides control signals therefor through the serial input port while receiving focus, exposure and white-balance detection signals through the serial output port from the respective detectors. Further, an improved exposure control system is provided which compensates for abnormal lighting conditions, such as, back-lighting or excessive front-lighting of the scene in the field of view of the camera.

REFERENCES:
patent: 4843474 (1989-06-01), Suzuki
patent: 4887121 (1989-12-01), Pritchard
patent: 4998162 (1991-03-01), Kondo
patent: 5036400 (1991-07-01), Haruki

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