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Paper Abstract and Keywords
Presentation 2009-10-01 11:25
Implementation of a Time-of-Flight Image Sensor using High Speed Charge Transfer Pinned-Photodiodes
Hiroaki Takeshita, Tomonari Sawada, Tetsuya Iida, Keita Yasutomi, Shoji Kawahito (Shizuoka Univ.) ICD2009-38
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents a new structure and method of range calculation for CMOS time-of-flight (TOF) range image sensors using pinned photodiodes. In the proposed method, a LED light with short pulse width and small duty ratio irradiates the objects and a back-reflected light is received by the TOF range imager. In TOF range image sensors, high speed charge transfer from the light receiving part to a charge accumulator is essential. It was found that the fastest charge transfer can be realized when the lateral electric field along the axis of charge transfer is constant and this condition is met when the shape of the diode exactly follows the relationship between the fully-depleted potential and the photodiode width. A TOF range imager prototype is designed and implemented with 0.18um CMOS image sensor technology for pinned photodiode 4T pixels. In the prototype, the response of the pixel output as a function of the light pulse delay has been measured.
Keyword (in Japanese) (See Japanese page) 
(in English) high-speed charge transfer / pinned photodiode / time-of-flight / CMOS image sensor / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 214, ICD2009-38, pp. 23-28, Oct. 2009.
Paper # ICD2009-38 
Date of Issue 2009-09-24 (ICD) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ICD2009-38

Conference Information
Committee ICD ITE-IST  
Conference Date 2009-10-01 - 2009-10-02 
Place (in Japanese) (See Japanese page) 
Place (in English) CIC Tokyo (Tamachi) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Analog, Mixed analog and digital, RF, and sensor interface circuitry 
Paper Information
Registration To ICD 
Conference Code 2009-10-ICD-IST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Implementation of a Time-of-Flight Image Sensor using High Speed Charge Transfer Pinned-Photodiodes 
Sub Title (in English)  
Keyword(1) high-speed charge transfer  
Keyword(2) pinned photodiode  
Keyword(3) time-of-flight  
Keyword(4) CMOS image sensor  
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1st Author's Name Hiroaki Takeshita  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Tomonari Sawada  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
3rd Author's Name Tetsuya Iida  
3rd Author's Affiliation Shizuoka University (Shizuoka Univ.)
4th Author's Name Keita Yasutomi  
4th Author's Affiliation Shizuoka University (Shizuoka Univ.)
5th Author's Name Shoji Kawahito  
5th Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Speaker Author-1 
Date Time 2009-10-01 11:25:00 
Presentation Time 25 minutes 
Registration for ICD 
Paper # ICD2009-38 
Volume (vol) vol.109 
Number (no) no.214 
Page pp.23-28 
#Pages 6 
Date of Issue 2009-09-24 (ICD) 

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