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| Paper Abstract and Keywords | ||
| Presentation | 2006-09-14 15:05 - Yusei Nishimoto, Satoshi Fujitsu, Shunji Sunasaki, Takeshi Kimura, Hiroyuki Imaizumi, Yoshihiro Fujita (NHK)  MoMuC2006-43 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A Conditional Access System (CAS) is essential for controlling digital content usage in narrow-band broadcasting such as terrestrial 1-segment broadcasting and digital audio broadcasting. This paper assumes that broadcasting receivers means not only mobile phones but also mobile receivers without two-way communication functions, such as mobile receivers for use in motor vehicles and portable receivers used in combination with personal digital assistants (PDAs) and portable game stations. A CAS provides a mechanism to restrict broadcasting reception and content playback to only subscribers. Here, contract information must be distributed to each and every receiver to distinguish between subscribers and non-subscribers, and this must be done by broadcasting in the case of mobile receivers without two-way communication functions. In B-CAS for digital satellite broadcasting, the system broadcasts contract information in this way. This, however, requires a wide transmission band of about 300 kbps to transmit contract information for individual receivers, which means that the current technology for distributing contract information by B-CAS cannot be applied to narrow-band broadcasting. In older to resolve this problem, we have developed a new CAS that is capable of transmitting contract information even for narrow-band broadcasting. This paper describes the operation scheme used to calculate the transmission rate of contract information when applying this system. We also clarify by security evaluation and evaluation of implementation that the proposed CAS can be applied to actual services. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | terrestrial 1-segment broadcasting / digital audio broadcasting / narrow-band broadcasting / conditional access / access control / contract information / / | |
| Reference Info. | IEICE Tech. Rep., vol. 106, pp. 39-44, Sept. 2006. | |
| Paper # | ||
| Date of Issue | 2006-09-07 (MoMuC) | |
| 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 | MoMuC2006-43 |
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| Conference Information | |
| Committee | MoNA ITE-BCT ITE-CE |
| Conference Date | 2006-09-14 - 2006-09-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Osaka Musium of History |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Integration of Mobile Communication and Broadcasting |
| Paper Information | |
| Registration To | ITE-BCT |
| Conference Code | 2006-09-MoMuC-BCT-CE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | - |
| Sub Title (in English) | |
| Keyword(1) | terrestrial 1-segment broadcasting |
| Keyword(2) | digital audio broadcasting |
| Keyword(3) | narrow-band broadcasting |
| Keyword(4) | conditional access |
| Keyword(5) | access control |
| Keyword(6) | contract information |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yusei Nishimoto |
| 1st Author's Affiliation | NHK (NHK) |
| 2nd Author's Name | Satoshi Fujitsu |
| 2nd Author's Affiliation | NHK (NHK) |
| 3rd Author's Name | Shunji Sunasaki |
| 3rd Author's Affiliation | NHK (NHK) |
| 4th Author's Name | Takeshi Kimura |
| 4th Author's Affiliation | NHK (NHK) |
| 5th Author's Name | Hiroyuki Imaizumi |
| 5th Author's Affiliation | NHK (NHK) |
| 6th Author's Name | Yoshihiro Fujita |
| 6th Author's Affiliation | NHK (NHK) |
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| Speaker | Author-1 |
| Date Time | 2006-09-14 15:05:00 |
| Presentation Time | 25 minutes |
| Registration for | ITE-BCT |
| Paper # | MoMuC2006-43 |
| Volume (vol) | vol.106 |
| Number (no) | no.245 |
| Page | pp.39-44 |
| #Pages | 6 |
| Date of Issue | 2006-09-07 (MoMuC) |
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