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Wide Dynamic Range Readout for CMOS Pixel Using PWM and Direct Mode Sensing Techniques

Authors:
Emmanuel Gómez Ramírez
José Alejandro Díaz Méndez
Mariano Aceves Mijares
José Miguel Rocha Pérez
Jorge Miguel Pedraza Chávez
Carlos Domínguez Horna

Keywords: dynamic range; CMOS imagers; PWM sensors; continuously operation sensors; multimode sensing

Abstract:
Dynamic range is a critical figure of merit for image sensors. Then, many researchers have been working to improve this figure. As a result, various techniques have been developed with good results. However, any effort to improve even more the dynamic range is of great value. The multimode method combines more than one technique to use the best part of them. In this paper, a high dynamic range CMOS image sensor using multimode sensing is presented. Dynamic Range as high, as 160 dB is achieved combining PWM and direct mode techniques. The circuit proposed here has one of the higher dynamic ranges reported.

Pages: 64 to 70

Copyright: Copyright (c) IARIA, 2013

Publication date: August 25, 2013

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-297-4

Location: Barcelona, Spain

Dates: from August 25, 2013 to August 31, 2013