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Paper Abstract and Keywords
Presentation 2014-11-28 09:15
Energy evaluation of bit-write reduction method based on state encoding limiting maximum and minimum Hamming distances for non-volatile memories
Tatsuro Kojo, Masashi Tawada, Masao Yanagisawa, Nozomu Togawa (Waseda Univ.) VLD2014-105 DC2014-59
Abstract (in Japanese) (See Japanese page) 
(in English) Data stored in non-volatile memories may be destructed due to crosstalk and radiation but we can restore their data by using error-correcting codes. However, non-volatile memories consume a large amount of energy in writing. How to reduce writing bits even when using error-correcting codes is one of the challenges in non-volatile memory design. We have proposed a Doughnut code, which is a new bit-write-reducing and error-correcting code. In addition, we have proposed a it code expansion method. When we apply our code expansion method to Doughnut code, we can obtain expanded Doughnut codes. Expanded Doughnut codes are error-correcting codes which can reduce the number of writing bits. In this paper, we demonstrate experimental evaluations from the viewpoint of energy reduction of our proposed expanded Doughnut codes. Experimental results show that the write-reducing code reduces energy consumption by up to 32% compared to Hamming code.
Keyword (in Japanese) (See Japanese page) 
(in English) non-volatile memory / reduction the number of writing bits / error-correcting codes / / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 328, VLD2014-105, pp. 221-226, Nov. 2014.
Paper # VLD2014-105 
Date of Issue 2014-11-19 (VLD, DC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 VLD2014-105 DC2014-59

Conference Information
Conference Date 2014-11-26 - 2014-11-28 
Place (in Japanese) (See Japanese page) 
Place (in English) B-ConPlaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Design Gaia 2014 -New Field of VLSI Design- 
Paper Information
Registration To VLD 
Conference Code 2014-11-VLD-DC-SLDM-CPSY-RECONF-ICD-CPM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Energy evaluation of bit-write reduction method based on state encoding limiting maximum and minimum Hamming distances for non-volatile memories 
Sub Title (in English)  
Keyword(1) non-volatile memory  
Keyword(2) reduction the number of writing bits  
Keyword(3) error-correcting codes  
1st Author's Name Tatsuro Kojo  
1st Author's Affiliation Waseda University (Waseda Univ.)
2nd Author's Name Masashi Tawada  
2nd Author's Affiliation Waseda University (Waseda Univ.)
3rd Author's Name Masao Yanagisawa  
3rd Author's Affiliation Waseda University (Waseda Univ.)
4th Author's Name Nozomu Togawa  
4th Author's Affiliation Waseda University (Waseda Univ.)
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Date Time 2014-11-28 09:15:00 
Presentation Time 25 
Registration for VLD 
Paper # IEICE-VLD2014-105,IEICE-DC2014-59 
Volume (vol) IEICE-114 
Number (no) no.328(VLD), no.329(DC) 
Page pp.221-226 
#Pages IEICE-6 
Date of Issue IEICE-VLD-2014-11-19,IEICE-DC-2014-11-19 

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