Title :
On-chip Automatic Exposure Control Technique
Author :
Lu, M. ; Wang, G. ; Renshaw, D. ; Denyer, P.D.
Author_Institution :
University of Edinburgh, Department of Electrical Engineering, Mayfield Road, Edinburgh, EH9 3JL, UK. Tel. 31 650 5661 Fax. 31 662 4358
Abstract :
This paper introduces techniques for the electronic variation & automatical control of exposure in solid-state image sensors. A novel electronic aperture and a simple exposure controller are described, which have been integrated on chip with a CMOS image sensor array. The technique can achieve a wide range exposure control of 40,000:1. This is equivalent to 15 stops of a mechanical iris system.
Keywords :
Apertures; Automatic control; CMOS image sensors; Clocks; Control systems; Image sensors; Iris; Machine vision; Sensor arrays; System-on-a-chip;
Conference_Titel :
Solid-State Circuits Conference, 1991. ESSCIRC '91. Proceedings - Seventeenth European
Conference_Location :
Milan, Italy
