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Paper Abstract and Keywords
Presentation 2007-09-20 15:10
A Digital Video Scrambling Method with Variable Concealed Level for Stored Content
Yusei Nishimoto, Satoshi Fujitsu, Takeshi Kimura, Hiroyuki Imaizumi (NHK), Nagahisa Mita (Kumamoto Univ.) MoMuC2007-45
Abstract (in Japanese) (See Japanese page) 
(in English) Streaming-based mobile broadcasting such as terrestrial 1-segment broadcasting and digital audio broadcasting started recently, and download-based mobile broadcasting services which play back stored content on receivers are being considered. These broadcasting services require a function for playing back content in depleted video to encourage viewers to purchase content, in addition to a function that allows only subscribers to view content. Therefore, broadcasters require a digital video scrambling method with variable concealed level to control the video quality of stored content. We propose a digital video scrambling method with variable concealed level for stored content. The method can handle H.264/AVC coding content and the processing load for controlling the concealed level of video is low. We also verify by evaluating video quality and implementation that the proposed method is feasible for actual services.
Keyword (in Japanese) (See Japanese page) 
(in English) terrestrial 1-segment broadcasting / digital audio broadcasting / narrow-band broadcasting / scrambling / access control / / /  
Reference Info. IEICE Tech. Rep., vol. 107, pp. 11-16, Sept. 2007.
Paper #  
Date of Issue 2007-09-13 (MoMuC) 
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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MoMuC2007-45

Conference Information
Committee MoNA ITE-BCT ITE-CE  
Conference Date 2007-09-20 - 2007-09-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ITE-BCT 
Conference Code 2007-09-MoMuC-ITE-BCT-ITE-CE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Digital Video Scrambling Method with Variable Concealed Level for Stored Content 
Sub Title (in English)  
Keyword(1) terrestrial 1-segment broadcasting  
Keyword(2) digital audio broadcasting  
Keyword(3) narrow-band broadcasting  
Keyword(4) scrambling  
Keyword(5) access control  
1st Author's Name Yusei Nishimoto  
1st Author's Affiliation NHK Science & Technical Research Laboratories (NHK)
2nd Author's Name Satoshi Fujitsu  
2nd Author's Affiliation NHK S&T Research Laboratories (NHK)
3rd Author's Name Takeshi Kimura  
3rd Author's Affiliation NHK Science & Technical Research Laboratories (NHK)
4th Author's Name Hiroyuki Imaizumi  
4th Author's Affiliation NHK Science & Technical Research Laboratories (NHK)
5th Author's Name Nagahisa Mita  
5th Author's Affiliation Kumamoto University (Kumamoto Univ.)
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Speaker Author-1 
Date Time 2007-09-20 15:10:00 
Presentation Time 30 minutes 
Registration for ITE-BCT 
Paper # MoMuC2007-45 
Volume (vol) vol.107 
Number (no) no.224 
Page pp.11-16 
Date of Issue 2007-09-13 (MoMuC) 

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