Electronic iris control for surveillance cameras

Details Electronic iris control for surveillance cameras Electronic iris control for surveillance cameras

1993-07-06

1994-07-26

Mancuso, Joseph

Television

Camera, system and detail

Optics

H04N 5238

Patent

active

053330110

ABSTRACT:
An auto-iris control device for automatically controlling an adjustable iris of a surveillance camera. The auto-iris control device has an adjustably settable reference level which can be adjusted by an operator at a remote location. A comparator compares the reference level against the average video level of the video signal output from the surveillance camera. Based upon the result of the comparison, iris control signals are generated for controlling the adjustable iris.

REFERENCES:
patent: 4928179 (1990-05-01), Takahashi et al.
patent: 5036400 (1991-07-01), Haruki
patent: 5053877 (1991-10-01), Kondo et al.
patent: 5057927 (1991-10-01), Hieda
patent: 5068735 (1991-11-01), Tuchiya
patent: 5161026 (1992-11-01), Mabuchi et al.

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