Iris stabilizer for automatic video camera

Details Iris stabilizer for automatic video camera Iris stabilizer for automatic video camera

1991-02-19

1992-09-15

Razavi, Michael

Facsimile and static presentation processing

Facsimile

Recording apparatus

358909, H04N 5238, H04N 5225

Patent

active

051482819

ABSTRACT:
An iris control for a video camera which includes a manual adjuster and an automatic control. A video signal from an image pickup element is detected when it reaches a reference level. A unit to be activated for changing this iris is selectively changed-over between the manual and automatic control units, and the state of the iris is prevented from being changed when the unit to be activated is changed-over.

REFERENCES:
patent: 3767853 (1973-10-01), Bendell et al.
patent: 4365272 (1982-12-01), Nagai
patent: 4399466 (1983-08-01), Stephenson
patent: 4564856 (1986-01-01), Sanderson et al.
patent: 4638350 (1987-01-01), Kato et al.,

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