A 1/2 inch-CCD imager with low-voltage variable shutter

VCA(Video-Cassette-Recorder) cameras have been developed to have high sensitivity and low smear noise(l),(2), (3). Nowadays, good resolution for motion pictures is eagerly desired. To satisfy the characteristic, an electronic shutter function is necessary. Moreover, a variable shutter scheme, which controls signal integration time, is suitable for an electronic iris control, too