Auto-iris method and apparatus for imaging device

Details Auto-iris method and apparatus for imaging device Auto-iris method and apparatus for imaging device

1991-09-03

1994-05-24

Powell, Mark R.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348364, H04N 5225

Patent

active

053153944

ABSTRACT:
An auto-iris method for an imaging device includes the steps of obtaining a first signal indicating brightness of an object from a signal output from an imaging element; comparing a level of the first signal with a level of a reference signal; and enhancing a level of the reference signal more as the object becomes brighter and controlling an iris to path more quantity of light to the imaging element, based on the compared result.

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patent: 4562476 (1985-12-01), Shikano et al.
patent: 4584610 (1986-04-01), Mizokami et al.
patent: 5049997 (1991-09-01), Arai
patent: 5065247 (1991-11-01), Haruki
patent: 5101275 (1992-03-01), Wijnen
patent: 5111301 (1992-05-01), Haruki et al.

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