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Paper Abstract and Keywords
Presentation 2007-07-27 15:15
An image reproduction method and estimation of its S/N in a CMOS imager by hybrid use of active and passive pixel readouts
Keiichiro Kagawa (NAIST), Yugo Nose, Kuniyuki Tani, Atsushi Wada (Sanyo Electric Co., Ltd.), Masahiro Nunoshita, Jun Ohta (NAIST) ICD2007-66 Link to ES Tech. Rep. Archives: ICD2007-66
Abstract (in Japanese) (See Japanese page) 
(in English) We have proposed a dynamic range extension method of the CMOS imagers with an in-pixel lateral overflow structure. In the proposed method, one of active and passive readout schemes is selected pixel by pixel according to the illumination. When the passive readout is chosen, the charges stored in the MOS capacitor as an overflow capacitor is read with high linearity by a charge amplifier at each column without the influence of the MOS capacitor, so that the readable voltage range and the dynamic range can be enhanced. In this report, we discuss an image reproduction scheme by electric calibration for two test voltages to obtain a high dynamic range image from an image in which the readout mode is mixed pixel by pixel. We also evaluate the signal-to-noise ratio determined by imager’s amplifier noise, a quantization noise of the A/D converter, and the sampling number in averaging the calibration data.
Keyword (in Japanese) (See Japanese page) 
(in English) CMOS imager / wide dynamic range / hybrid use of APS and PPS / image reproduction / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 163, ICD2007-66, pp. 171-176, July 2007.
Paper # ICD2007-66 
Date of Issue 2007-07-19 (ICD) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Copyright
and
reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ICD2007-66 Link to ES Tech. Rep. Archives: ICD2007-66

Conference Information
Committee ICD ITE-IST  
Conference Date 2007-07-26 - 2007-07-27 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ICD 
Conference Code 2007-07-ICD-ITE-IST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An image reproduction method and estimation of its S/N in a CMOS imager by hybrid use of active and passive pixel readouts 
Sub Title (in English)  
Keyword(1) CMOS imager  
Keyword(2) wide dynamic range  
Keyword(3) hybrid use of APS and PPS  
Keyword(4) image reproduction  
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1st Author's Name Keiichiro Kagawa  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Yugo Nose  
2nd Author's Affiliation Sanyo Electric Co., Ltd. (Sanyo Electric Co., Ltd.)
3rd Author's Name Kuniyuki Tani  
3rd Author's Affiliation Sanyo Electric Co., Ltd. (Sanyo Electric Co., Ltd.)
4th Author's Name Atsushi Wada  
4th Author's Affiliation Sanyo Electric Co., Ltd. (Sanyo Electric Co., Ltd.)
5th Author's Name Masahiro Nunoshita  
5th Author's Affiliation Nara Institute of Science and Technology (NAIST)
6th Author's Name Jun Ohta  
6th Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker
Date Time 2007-07-27 15:15:00 
Presentation Time 25 
Registration for ICD 
Paper # IEICE-ICD2007-66 
Volume (vol) IEICE-107 
Number (no) no.163 
Page pp.171-176 
#Pages IEICE-6 
Date of Issue IEICE-ICD-2007-07-19 


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