KR20090073485A - 디지털 데이터 방송용 수신제한시스템 - Google Patents
디지털 데이터 방송용 수신제한시스템 Download PDFInfo
- Publication number
- KR20090073485A KR20090073485A KR1020070141446A KR20070141446A KR20090073485A KR 20090073485 A KR20090073485 A KR 20090073485A KR 1020070141446 A KR1020070141446 A KR 1020070141446A KR 20070141446 A KR20070141446 A KR 20070141446A KR 20090073485 A KR20090073485 A KR 20090073485A
- Authority
- KR
- South Korea
- Prior art keywords
- data
- emm
- ecm
- ecmg
- generator
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
- H04N21/26609—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM] using retrofitting techniques, e.g. by re-encrypting the control words used for pre-encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4353—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving decryption of additional data
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims (5)
- EMM 데이터를 생성하는 EMM 생성기와,ECM 데이터를 생성하는 ECM 생성기와,제어 워드(CW)를 생성하는 CW 생성기와,방송 데이터를 스크램블하는 스크램블러를 포함하며,상기 EMM 생성기는 EMM 데이터를 상기 ECM 생성기로 전달하며,상기 ECM 생성기는 상기 EMM 데이터를 ECM 데이터 내에 삽입하여 상기 스크램블러로 전달하는 디지털 데이터 방송용 수신제한시스템.
- 제1항의 수신제한시스템에 있어서, 상기 ECMG 및 EMMG는 제어 정보용 TCP/IP 프로토콜 및 데이터 정보용 UDP 프로토콜을 따르는 동일한 모듈로 형성되는 디지털 데이터 방송용 수신제한시스템.
- 제1항의 수신제한시스템에 있어서, 상기 ECMG 및 EMMG는 제어 및 데이터 정보용 TCP/IP 프로토콜을 따르는 분리된 모듈로 형성되는 디지털 데이터 방송용 수신제한시스템.
- 제1항의 수신제한시스템에 있어서, 상기 제어 워드는 비대칭 암호화 알고리즘에 의해 암호화된 제어 워드인 디지털 데이터 방송용 수신제한시스템.
- 제1항 내지 제4항 중 어느 하나의 청구항의 수신제한시스템에 있어서, 상기 제어 워드는 모든 가입자를 위한 동일한 개인 키에 의해 해독되는 디지털 데이터 방송용 수신제한시스템.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070141446A KR100922114B1 (ko) | 2007-12-31 | 2007-12-31 | 디지털 데이터 방송용 수신제한시스템 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070141446A KR100922114B1 (ko) | 2007-12-31 | 2007-12-31 | 디지털 데이터 방송용 수신제한시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090073485A true KR20090073485A (ko) | 2009-07-03 |
KR100922114B1 KR100922114B1 (ko) | 2009-10-16 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020070141446A KR100922114B1 (ko) | 2007-12-31 | 2007-12-31 | 디지털 데이터 방송용 수신제한시스템 |
Country Status (1)
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KR (1) | KR100922114B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101223280B1 (ko) * | 2009-10-09 | 2013-01-17 | 주식회사 디지캡 | 디지털 방송 제한수신 설정 시스템 및 그 방법 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101594111B1 (ko) | 2009-11-24 | 2016-02-15 | 주식회사 케이티 | 콘텐츠 암호화 시스템 및 방법 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970064233A (ko) * | 1996-02-15 | 1997-09-12 | 양승택 | 조건부 제한수신 서비스를 위한 메시지 처리 방법 |
FR2831360B1 (fr) | 2001-10-19 | 2004-02-06 | Viaccess Sa | Protocole interactif de gestion a distance du controle d'acces a des informations embrouillees |
JP2004186714A (ja) | 2002-11-29 | 2004-07-02 | Pioneer Electronic Corp | コンテンツ提供システム、コンテンツ受信装置、視聴制御プログラム及び視聴制御用記憶媒体 |
KR100718452B1 (ko) * | 2005-04-25 | 2007-05-14 | 에스케이 텔레콤주식회사 | 대역외 채널을 이용한 emm 전송시스템 및 그 방법 |
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2007
- 2007-12-31 KR KR1020070141446A patent/KR100922114B1/ko active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101223280B1 (ko) * | 2009-10-09 | 2013-01-17 | 주식회사 디지캡 | 디지털 방송 제한수신 설정 시스템 및 그 방법 |
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Publication number | Publication date |
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KR100922114B1 (ko) | 2009-10-16 |
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