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Paper Abstract and Keywords
Presentation 2007-06-22 09:30
Evaluation method of electromagnetic disturbance that contains information leaks from PC display
Toshihide Tosaka, Yukio Yamanaka, Kaori Fukunaga (NICT), Ryo Ishikawa, Mitsuo Hattori (NTT-AT) EMCJ2007-19
Abstract (in Japanese) (See Japanese page) 
(in English) Electromagnetic disturbance might contain information that leaks from PC display. If a data is reconstructed from the measured disturbance, the displayed information might be leak. To evaluate whether the electromagnetic disturbance contains information or not, we need to reconstruct the display image from the measured disturbance using a special receiver. However, not all test facilities have such a receiver. Therefore, we propose an evaluation method of information leakage without special receiver. The frequency component of the dot-clock
of a display is modulated by the displayed image, and its harmonics are radiated around the equipment. If the disturbance contains information, we can measure the frequency component of the displayed image, the horizontal sync signal, and the vertical sync signal. In this paper, we evaluate the disturbance from the existence of the frequency component of the horizontal and vertical sync signals.
Keyword (in Japanese) (See Japanese page) 
(in English) Electromagnetic security / PC display / Evaluation method / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 107, EMCJ2007-19, pp. 7-10, June 2007.
Paper # EMCJ2007-19 
Date of Issue 2007-06-15 (EMCJ) 
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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EMCJ2007-19

Conference Information
Committee EMCJ  
Conference Date 2007-06-22 - 2007-06-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2007-06-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation method of electromagnetic disturbance that contains information leaks from PC display 
Sub Title (in English)  
Keyword(1) Electromagnetic security  
Keyword(2) PC display  
Keyword(3) Evaluation method  
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1st Author's Name Toshihide Tosaka  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Yukio Yamanaka  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Kaori Fukunaga  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Ryo Ishikawa  
4th Author's Affiliation NTT Advanced Technology (NTT-AT)
5th Author's Name Mitsuo Hattori  
5th Author's Affiliation NTT Advanced Technology (NTT-AT)
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Speaker Author-1 
Date Time 2007-06-22 09:30:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2007-19 
Volume (vol) vol.107 
Number (no) no.107 
Page pp.7-10 
#Pages 4 
Date of Issue 2007-06-15 (EMCJ) 

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