Abstract:
In this paper, we propose a new image pixel structure for high dynamic range operation, which is based on a multiple sampling scheme and conditional reset circuits. To ex...Show MoreMetadata
Abstract:
In this paper, we propose a new image pixel structure for high dynamic range operation, which is based on a multiple sampling scheme and conditional reset circuits. To expand the dynamic range of the sensor, the output of the pixel is sampled multiple times in an integration time. In each sampling, the output of the pixel is compared with a reference voltage, and the result of this comparison activates the conditional reset circuit. The times of conditional reset during the integration contribute to the increase of the dynamic range of the sensor. Dynamic range can be increased to N, where N is the sampling times in an integration time. The test chip was fabricated with a 0.65-/spl mu/m CMOS technology (2-P, 2-M).
Published in: Proceedings of the IEEE 2002 Custom Integrated Circuits Conference (Cat. No.02CH37285)
Date of Conference: 15-15 May 2002
Date Added to IEEE Xplore: 07 August 2002
Print ISBN:0-7803-7250-6