UA71056C2 - Спосіб та система для передавання шифрованої інформації - Google Patents
Спосіб та система для передавання шифрованої інформаціїInfo
- Publication number
- UA71056C2 UA71056C2 UA2002076227A UA200276227A UA71056C2 UA 71056 C2 UA71056 C2 UA 71056C2 UA 2002076227 A UA2002076227 A UA 2002076227A UA 200276227 A UA200276227 A UA 200276227A UA 71056 C2 UA71056 C2 UA 71056C2
- Authority
- UA
- Ukraine
- Prior art keywords
- channel
- decrypt
- ecm
- encrypted
- coded data
- Prior art date
Links
- 238000013475 authorization Methods 0.000 abstract 3
- 238000009792 diffusion process Methods 0.000 abstract 1
Classifications
-
- 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]
-
- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
-
- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43607—Interfacing a plurality of external cards, e.g. through a DVB Common Interface [DVB-CI]
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/165—Centralised control of user terminal ; Registering at central
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Facsimile Transmission Control (AREA)
- Exchange Systems With Centralized Control (AREA)
- Mobile Radio Communication Systems (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Error Detection And Correction (AREA)
- Communication Control (AREA)
Abstract
Під час передачі програм платного телебачення з багатоканальними сигналами кожний канал асоціюється з повідомленнями (ЕСМ) щодо перевірки повноважень, які дозволяють дешифрувати цей канал відповідно до прав абонента. При перемиканні каналів вимагається дуже короткий проміжок часу до того моменту, як будуть отримані такі ж нові права по відношенню до нового каналу. Тому застосування громіздких алгоритмів шифрування виключається. Щоб подолати цей недолік, для дешифрування певного каналу пропонується система, яка використовує поєднання інформації (ЕСМ) щодо права на доступ до каналу і яка, отже, шифрується швидкодіючим алгоритмом, з інформацією (МЕСМ) щодо права на доступ до групи каналів. Ці останні шифруються з допомогою високозахищених алгоритмів, а тому дешифруються повільніше.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1662000 | 2000-01-28 | ||
US22676900P | 2000-08-21 | 2000-08-21 | |
PCT/IB2001/000094 WO2001056287A2 (en) | 2000-01-28 | 2001-01-24 | Method and system for transmission of decrypting information |
Publications (1)
Publication Number | Publication Date |
---|---|
UA71056C2 true UA71056C2 (uk) | 2004-11-15 |
Family
ID=25718235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
UA2002076227A UA71056C2 (uk) | 2000-01-28 | 2001-01-24 | Спосіб та система для передавання шифрованої інформації |
Country Status (25)
Country | Link |
---|---|
US (1) | US7668311B2 (uk) |
EP (1) | EP1252768B1 (uk) |
JP (1) | JP2003521175A (uk) |
KR (1) | KR100740739B1 (uk) |
CN (1) | CN1168313C (uk) |
AT (1) | ATE244975T1 (uk) |
AU (1) | AU770686B2 (uk) |
BG (1) | BG106863A (uk) |
BR (1) | BR0107878A (uk) |
CA (1) | CA2397211C (uk) |
CZ (1) | CZ298949B6 (uk) |
DZ (1) | DZ3379A1 (uk) |
EA (1) | EA004194B1 (uk) |
ES (1) | ES2202270T3 (uk) |
HK (1) | HK1052812B (uk) |
HU (1) | HU224844B1 (uk) |
IL (2) | IL150076A0 (uk) |
MA (1) | MA25513A1 (uk) |
MX (1) | MXPA02007179A (uk) |
NO (1) | NO20023550L (uk) |
PL (1) | PL356046A1 (uk) |
PT (1) | PT1252768E (uk) |
SK (1) | SK11032002A3 (uk) |
UA (1) | UA71056C2 (uk) |
WO (1) | WO2001056287A2 (uk) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1661327B1 (en) * | 2003-08-12 | 2014-10-08 | BlackBerry Limited | Method and apparatus for processing encoded messages |
EP1545130A1 (fr) * | 2003-12-16 | 2005-06-22 | Nagravision S.A. | Procédé de mise à jour de droits d'accès à des données à accès conditionel |
EP1705915A1 (fr) * | 2005-03-22 | 2006-09-27 | Nagravision S.A. | Procédé de gestion de l'accès à des données à accès conditionnel pour un zapping rapide |
EP1742475A1 (fr) * | 2005-07-07 | 2007-01-10 | Nagravision S.A. | Méthode de contrôle d'accès à des données chiffrées |
DE102005033285C5 (de) * | 2005-07-15 | 2019-11-07 | Institut für Rundfunktechnik GmbH | Consumer-Electronic-Gerät |
US20080037782A1 (en) * | 2006-08-11 | 2008-02-14 | Widevine Technologies, Inc. | Reduction of channel change time for digital media devices using key management and virtual smart cards |
EP1890493A1 (fr) | 2006-08-17 | 2008-02-20 | Nagracard S.A. | Méthode de révocation de modules de sécurité utilisés pour sécuriser des messages diffusés |
US8625792B2 (en) * | 2008-01-16 | 2014-01-07 | Qualcomm Incorporated | Methods and apparatus to reduce channel switching time |
EP2166761A1 (en) | 2008-09-19 | 2010-03-24 | Nagravision S.A. | Method to enforce by a management center the access rules to a broadcast product |
EP2207340A1 (en) * | 2009-01-12 | 2010-07-14 | Thomson Licensing | Method and device for reception of control words, and device for transmission thereof |
IL213611A0 (en) | 2011-06-16 | 2011-07-31 | Erez Waisbard | Secure fast channel changing |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2663179B1 (fr) * | 1990-06-08 | 1992-09-11 | Matra Communication | Procede et dispositif transcontroleurs pour installation de diffusion de programmes de television a acces conditionnel. |
FR2694860B1 (fr) * | 1992-08-13 | 1994-09-30 | France Telecom | Procédés de diffusion et de réception de programmes de télévision à accès conditionnel à temps de commutation de programmes réduit. |
EP0824817B1 (en) * | 1996-03-11 | 2005-08-03 | Hewlett-Packard Company, A Delaware Corporation | Apparatus and method for communicating data word blocks together with control words |
US6690795B1 (en) * | 1997-03-04 | 2004-02-10 | Lucent Technologies Inc. | Multiple keys for decrypting data in restricted-access television system |
JP4110588B2 (ja) * | 1997-03-19 | 2008-07-02 | ソニー株式会社 | データ受信装置および受信方法 |
BR9815610A (pt) * | 1997-08-01 | 2004-06-22 | Scientific Atlanta | Verificação da fonte de informações de programa em sistema de acesso condicional |
DE69833821T2 (de) * | 1997-09-18 | 2006-11-30 | Matsushita Electric Industrial Co., Ltd., Kadoma | Übertragungsverfahren und -vorrichtung zum kombinierten Multiplexen und Verschlüsseln |
US6898285B1 (en) * | 2000-06-02 | 2005-05-24 | General Instrument Corporation | System to deliver encrypted access control information to support interoperability between digital information processing/control equipment |
-
2001
- 2001-01-24 CZ CZ20021924A patent/CZ298949B6/cs not_active IP Right Cessation
- 2001-01-24 PL PL01356046A patent/PL356046A1/xx not_active Application Discontinuation
- 2001-01-24 JP JP2001554615A patent/JP2003521175A/ja not_active Withdrawn
- 2001-01-24 AT AT01900602T patent/ATE244975T1/de not_active IP Right Cessation
- 2001-01-24 MX MXPA02007179A patent/MXPA02007179A/es active IP Right Grant
- 2001-01-24 SK SK1103-2002A patent/SK11032002A3/sk unknown
- 2001-01-24 BR BR0107878-0A patent/BR0107878A/pt not_active Application Discontinuation
- 2001-01-24 CN CNB018041655A patent/CN1168313C/zh not_active Expired - Fee Related
- 2001-01-24 IL IL15007601A patent/IL150076A0/xx active IP Right Grant
- 2001-01-24 ES ES01900602T patent/ES2202270T3/es not_active Expired - Lifetime
- 2001-01-24 EA EA200200710A patent/EA004194B1/ru not_active IP Right Cessation
- 2001-01-24 WO PCT/IB2001/000094 patent/WO2001056287A2/en active IP Right Grant
- 2001-01-24 KR KR1020027009733A patent/KR100740739B1/ko active IP Right Grant
- 2001-01-24 CA CA2397211A patent/CA2397211C/en not_active Expired - Lifetime
- 2001-01-24 AU AU25436/01A patent/AU770686B2/en not_active Ceased
- 2001-01-24 HU HU0300904A patent/HU224844B1/hu not_active IP Right Cessation
- 2001-01-24 UA UA2002076227A patent/UA71056C2/uk unknown
- 2001-01-24 DZ DZ013379A patent/DZ3379A1/xx active
- 2001-01-24 PT PT01900602T patent/PT1252768E/pt unknown
- 2001-01-24 EP EP01900602A patent/EP1252768B1/en not_active Expired - Lifetime
- 2001-01-24 US US10/168,608 patent/US7668311B2/en not_active Expired - Fee Related
-
2002
- 2002-06-06 IL IL150076A patent/IL150076A/en not_active IP Right Cessation
- 2002-06-18 MA MA26698A patent/MA25513A1/fr unknown
- 2002-06-24 BG BG106863A patent/BG106863A/bg unknown
- 2002-07-25 NO NO20023550A patent/NO20023550L/no unknown
-
2003
- 2003-07-09 HK HK03104931.1A patent/HK1052812B/zh not_active IP Right Cessation
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