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Paper Abstract and Keywords
Presentation 2006-07-27 15:00
Design and preliminary experiments of digital vision chip architecture for retinal prosthesis
Keiichiro Kagawa, Takashi Tokuda, Masahiro Nunoshita, Jun Ohta (Nara Institute of Science and Technology) Link to ES Tech. Rep. Archives: ICD2006-67
Abstract (in Japanese) (See Japanese page) 
(in English) We are studying vision chips for retinal prosthesis in which the vision chip implanted on or underneath the retina of the blind patients makes visual sensation by stimulating the surviving retinal cells according to the captured images. In this report, we describe a distributed and isolated microchip architecture powered by infrared light to cover large area of the retina with multiple microchips to decrease operation faults concerning disconnection of electric contacts or damages to the packaging. We also discuss digital implementation of almost all part of the pixel circuits of the vision chip to make design and verification easy. By use of a pulse-frequency-modulation photosensor with wide dynamic range using a capacitive-feedback-reset scheme that works as a 1-bit ADC, the vision chip architecture with synthesizability from HDL sources was discussed. We also show a real-time emulator to verify operation of image processing circuits described by HDL.
Keyword (in Japanese) (See Japanese page) 
(in English) retinal prosthesis / vision chip / distributed and isolated architecture / pulse frequency modulation / HDL / / /  
Reference Info. IEICE Tech. Rep., vol. 106, pp. 41-46, July 2006.
Paper #  
Date of Issue 2006-07-20 (ICD) 
ISSN Print edition: ISSN 0913-5685
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 Link to ES Tech. Rep. Archives: ICD2006-67

Conference Information
Committee ICD ITE-IST  
Conference Date 2006-07-27 - 2006-07-28 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ITE-IST 
Conference Code 2006-07-ICD-ITE-IST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design and preliminary experiments of digital vision chip architecture for retinal prosthesis 
Sub Title (in English)  
Keyword(1) retinal prosthesis  
Keyword(2) vision chip  
Keyword(3) distributed and isolated architecture  
Keyword(4) pulse frequency modulation  
Keyword(5) HDL  
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1st Author's Name Keiichiro Kagawa  
1st Author's Affiliation Nara Institute of Science and Technology (Nara Institute of Science and Technology)
2nd Author's Name Takashi Tokuda  
2nd Author's Affiliation Nara Institute of Science and Technology (Nara Institute of Science and Technology)
3rd Author's Name Masahiro Nunoshita  
3rd Author's Affiliation Nara Institute of Science and Technology (Nara Institute of Science and Technology)
4th Author's Name Jun Ohta  
4th Author's Affiliation Nara Institute of Science and Technology (Nara Institute of Science and Technology)
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Speaker Author-1 
Date Time 2006-07-27 15:00:00 
Presentation Time 30 minutes 
Registration for ITE-IST 
Paper # ICD2006-67 
Volume (vol) vol.106 
Number (no) no.189 
Page pp.41-46 
#Pages
Date of Issue 2006-07-20 (ICD) 


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