Video camera apparatus having solid state imager

Details Video camera apparatus having solid state imager Video camera apparatus having solid state imager

1992-09-15

1994-02-01

Razavi, Michael T.

Television

Camera, system and detail

Combined image signal generator and general image signal...

368229, 368251, 368298, H04N 314, H04N 5335

Patent

active

052836550

ABSTRACT:
A video camera apparatus having a solid state imager for generating video signals and a black level balance adjusting circuit for automatically adjusting black levels of the video signals. The video camera apparatus comprises an incident light control device, an electronic shutter control circuit, a comparator and a processor. The incident light control device controls the amount of light incident to the solid state imager. The electronic shutter control circuit varies the mode of the solid state imager between at least a first mode and a second mode. The effective accumulating period of the solid state imager in the first mode is different from the corresponding period in the second mode. The comparator compares the voltage level of the video signal obtained in the first mode with that obtained in the second mode. The processor controls the electronic shutter control circuit and the comparator, and activates the black level balance adjusting circuit when the voltage levels of the video signals obtained in the first and the second modes are substantially the same.

REFERENCES:
patent: 4274107 (1981-06-01), Tamura et al.
patent: 4556912 (1985-12-01), Yamanaka et al.
patent: 4589025 (1986-05-01), Monahan et al.
patent: 4631589 (1986-12-01), Hongu et al.
patent: 4675738 (1987-06-01), Okino et al.
patent: 4723170 (1988-02-01), Jaspers
patent: 4786969 (1988-11-01), Shouji et al.
patent: 4959727 (1990-09-01), Imaide et al.
patent: 4963982 (1990-10-01), Hieda
patent: 4972267 (1990-11-01), Kaneko et al.
patent: 5049997 (1991-09-01), Arai

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