Share Email Print
cover

Proceedings Paper

Dynamic range extension of an active pixel sensor by combining output signals from photodiodes with different sensitivities
Author(s): Jae-Sung Kong; Sung-Hyun Jo; Kyung-Hwa Choi; Sang-Ho Seo; Pyung Choi; Jang-Kyoo Shin
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A dynamic range (DR) extension technique based on a 3-transistor (3-Tr.) active pixel sensor (APS) and dual image sampling has been proposed. The feature of the proposed APS was that the APS used two photodiodes with different sensitivities, a high-sensitivity photodiode and a low-sensitivity photodiode. Operation of the proposed APS was simulated by using a 128×128 pixel array. Compared with previously proposed wide DR (WDR) APS, the proposed approach has several advantages; no-external equipments or signal processing for combining images, no-additional timerequirement for additional charge accumulation, adjustable DR extension and no temporal disparity.

Paper Details

Date Published: 25 January 2010
PDF: 8 pages
Proc. SPIE 7536, Sensors, Cameras, and Systems for Industrial/Scientific Applications XI, 75360T (25 January 2010); doi: 10.1117/12.847994
Show Author Affiliations
Jae-Sung Kong, Kyungpook National Univ. (Korea, Republic of)
Sung-Hyun Jo, Kyungpook National Univ. (Korea, Republic of)
Kyung-Hwa Choi, Kyungpook National Univ. (Korea, Republic of)
Sang-Ho Seo, Kyungpook National Univ. (Korea, Republic of)
Pyung Choi, Kyungpook National Univ. (Korea, Republic of)
Jang-Kyoo Shin, Kyungpook National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7536:
Sensors, Cameras, and Systems for Industrial/Scientific Applications XI
Erik Bodegom; Valérie Nguyen, Editor(s)

© SPIE. Terms of Use
Back to Top