Automatic gain control circuit with exposure control circuit

Details Automatic gain control circuit with exposure control circuit Automatic gain control circuit with exposure control circuit

2006-07-19

2009-12-01

Villecco, John M (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S362000, C348S296000

Reexamination Certificate

active

07626616

ABSTRACT:
An automatic gain control circuit generates, based on comparison between an average brightness of brightness data output for each frame from an image sensor and a target brightness, an integration time adjustment signal for adjusting an integration time during which the image sensor is exposed, a gain adjustment signal for adjusting gain of an amplifier that amplifies an output signal of the image sensor, and a frame rate adjustment signal for changing a frame rate. The automatic gain control circuit includes an exposure control circuit for adjusting a blanking time of each frame and generating, as the frame rate adjustment signal, a maximum integration time adjustment signal for switching a maximum integration time of the image sensor.

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