KR100676170B1 - 이송 패킷 스트림을 처리하는 디코더 및 방법 - Google Patents
이송 패킷 스트림을 처리하는 디코더 및 방법 Download PDFInfo
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- KR100676170B1 KR100676170B1 KR1020007013976A KR20007013976A KR100676170B1 KR 100676170 B1 KR100676170 B1 KR 100676170B1 KR 1020007013976 A KR1020007013976 A KR 1020007013976A KR 20007013976 A KR20007013976 A KR 20007013976A KR 100676170 B1 KR100676170 B1 KR 100676170B1
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- 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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
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- H—ELECTRICITY
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- 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]
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- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
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- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42676—Internal components of the client ; Characteristics thereof for modulating an analogue carrier signal to encode digital information or demodulating it to decode digital information, e.g. ADSL or cable modem
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
- Communication Control (AREA)
Abstract
Description
Claims (43)
- 패킷 페이로드내에 캡슐화된 패킷화 데이터를 포함하는 이송 패킷 스트림을 처리하기 위한 디코더로서:휴대용 보안모듈(30)로부터 특정 조건부 액세스 시스템의 식별자를 수신하는 수신수단(74);상기 특정 조건부 액세스 시스템과 관련된 조건부 액세스 패킷의 패킷 ID를 수신하고, 상기 패킷 ID를 기초로 하여 상기 이송 패킷 스트림으로부터 패킷, 프로그램 맵 테이블(41,42), 및 조건부 액세스 테이블(47)을 추출하는 제 1 필터링 수단(85);상기 특정 조건부 액세스 시스템과 관련된 조건부 액세스 패킷의 패킷 ID를 상기 제 1 필터링 수단(85)에 제공하고, 상기 제 1 필터링 수단(85)으로부터 상기 프로그램 맵 테이블(41,42)과 상기 조건부 액세스 테이블(47)을 수신하고, 상기 특정 조건부 액세스 시스템의 식별자, 프로그램 맵 테이블(41,42), 및 상기 조건부 액세스 테이블(47)을 이용하여 상기 특정 액세스 시스템과 관련된 상기 조건부 액세스 패킷의 패킷 ID를 결정하는 제공수단(81); 및제 2 필터링 수단(86)을 포함하고,상기 특정 조건부 액세스 시스템과 관련된 조건부 액세스 패킷의 패킷 ID를 이용하여 추출된 패킷의 페이로드는 테이블 헤더와 테이블 페이로드를 갖는 테이블을 포함하고, 상기 테이블 헤더는 테이블 ID를 포함하고, 상기 테이블 페이로드는 조건부 액세스 메시지와, 메시지의 타입을 식별하는 조건부 액세스 지정 헤더 필드를 포함하고,상기 수신수단(74)은 상기 제 2 필터링 수단(86)을 구성하는데 필요한 테이블 ID의 값과 조건부 액세스 지정 헤더를 포함하는 필터 데이터를 상기 휴대용 보안모듈(30)로부터 수신하고,상기 제 2 필터링 수단(86)은 상기 필터 데이터를 수신하고, 상기 테이블 ID 및 각 패킷의 조건부 액세스 데이터의 상기 필터 데이터와의 비교에 의해 추출된 패킷의 페이로드를 상기 필터 데이터에 따라 필터링하는 것을 특징으로 하는 디코더.
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- 패킷 페이로드내에 캡슐화된 패킷화 데이터를 포함하는 이송 패킷 스트림을 처리하기 위한 방법으로서, 디코더에서:특정 조건부 액세스 시스템의 식별자를 휴대용 보안모듈(30)로부터 수신하는 단계;상기 특정 조건부 액세스 시스템과 관련된 조건부 액세스 패킷의 패킷 ID를 제 1 필터링 수단(85)에 제공하는 단계;상기 수신한 식별자에 따른 패킷 헤더 정보를 제 1 필터링 수단(85)에 제공하는 단계;상기 제 1 필터링 수단에서는 상기 패킷 ID를 기초로 하여 상기 이송 패킷 스트림으로부터 패킷을 추출하는 단계;상기 제 1 필터링 수단에서는 상기 이송 패킷 스트림으로부터 프로그램 맵 테이블(41,42)과 조건부 액세스 테이블(47)을 추출하는 단계;상기 특정 조건부 액세스 시스템과 관련된 조건부 액세스 패킷의 패킷 ID를 상기 제 1 필터링 수단(85)에 제공하는 단계;상기 제공수단에서는 상기 프로그램 맵 테이블(41,42)과 상기 조건부 액세스 테이블(47)을 상기 제 1 필터링 수단으로부터 수신하는 단계;상기 제공수단에서는 상기 특정 조건부 액세스 시스템의 식별자, 상기 프로그램 맵 테이블(41,42), 및 상기 조건부 액세스 테이블(47)을 이용하여 상기 특정 조건부 액세스 시스템과 관련된 조건부 액세스 패킷의 패킷 ID를 결정하는 단계;상기 특정 조건부 액세스 시스템과 관련된 조건부 액세스 패킷의 패킷 ID를 이용하여 추출된 패킷의 페이로드는 테이블 헤더와 테이블 페이로드를 포함하고, 상기 테이블 헤더는 테이블 ID를 포함하고, 상기 테이블 페이로는 조건부 액세스 메시지와, 메시지의 타입을 식별하는 조건부 액세스 지정 헤더 필드를 포함하고,제 2 필터링 수단(86)을 구성하는데 필요한 테이블 ID의 값과 조건부 액세스 지정 헤더를 포함하는 필터 데이터를 상기 휴대용 보안모듈로부터 수신하는 단계;상기 제 2 필터링 수단에서는 상기 필터 데이터를 수신하는 단계; 및상기 테이블 ID와 각 패킷의 조건부 액세스 헤더의 상기 필터 데이터와의 비교에 의해 추출된 패킷의 페이로드를 상기 수신한 필터 데이터에 따라 상기 제 2 필터링 수단에서 필터링하는 단계를 포함하는 것을 특징으로 하는 방법.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98401374A EP0964572A1 (en) | 1998-06-08 | 1998-06-08 | Decoder and security module for a digital transmission system |
EP98401374.8 | 1998-06-08 |
Publications (2)
Publication Number | Publication Date |
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KR20010052711A KR20010052711A (ko) | 2001-06-25 |
KR100676170B1 true KR100676170B1 (ko) | 2007-01-31 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020007013976A KR100676170B1 (ko) | 1998-06-08 | 1999-06-08 | 이송 패킷 스트림을 처리하는 디코더 및 방법 |
Country Status (22)
Country | Link |
---|---|
EP (2) | EP0964572A1 (ko) |
JP (1) | JP4422901B2 (ko) |
KR (1) | KR100676170B1 (ko) |
CN (1) | CN100359916C (ko) |
AU (1) | AU4055499A (ko) |
BR (1) | BRPI9911003B1 (ko) |
CA (1) | CA2333743A1 (ko) |
DE (1) | DE69937608T2 (ko) |
ES (1) | ES2299248T3 (ko) |
HK (1) | HK1034629A1 (ko) |
HR (1) | HRP20000821A2 (ko) |
HU (1) | HUP0102421A2 (ko) |
ID (1) | ID27163A (ko) |
IL (1) | IL139923A0 (ko) |
JO (1) | JO2103B1 (ko) |
MY (1) | MY134770A (ko) |
NO (1) | NO20006206L (ko) |
PL (1) | PL344698A1 (ko) |
PT (1) | PT1086579E (ko) |
TR (1) | TR200003646T2 (ko) |
WO (1) | WO1999065231A1 (ko) |
ZA (1) | ZA200007264B (ko) |
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EP0935382A1 (en) * | 1998-02-04 | 1999-08-11 | CANAL+ Société Anonyme | Configuring method and device |
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- 1999-06-08 CN CNB998094536A patent/CN100359916C/zh not_active Expired - Fee Related
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WO1995029560A1 (en) * | 1994-04-22 | 1995-11-02 | Thomson Consumer Electronics, Inc. | Conditional access information arrangement |
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TR200003646T2 (tr) | 2001-06-21 |
ID27163A (id) | 2001-03-08 |
MY134770A (en) | 2007-12-31 |
KR20010052711A (ko) | 2001-06-25 |
EP0964572A1 (en) | 1999-12-15 |
WO1999065231A1 (en) | 1999-12-16 |
CA2333743A1 (en) | 1999-12-16 |
CN1313005A (zh) | 2001-09-12 |
IL139923A0 (en) | 2002-02-10 |
JO2103B1 (en) | 2000-05-21 |
EP1086579A1 (en) | 2001-03-28 |
DE69937608T2 (de) | 2008-10-23 |
HUP0102421A2 (hu) | 2001-10-28 |
BR9911003A (pt) | 2001-02-20 |
EP1086579B1 (en) | 2007-11-21 |
BRPI9911003B1 (pt) | 2016-08-09 |
JP2002518896A (ja) | 2002-06-25 |
ES2299248T3 (es) | 2008-05-16 |
HRP20000821A2 (en) | 2001-12-31 |
CN100359916C (zh) | 2008-01-02 |
NO20006206D0 (no) | 2000-12-06 |
PT1086579E (pt) | 2008-03-03 |
PL344698A1 (en) | 2001-11-19 |
NO20006206L (no) | 2001-02-08 |
AU4055499A (en) | 1999-12-30 |
ZA200007264B (en) | 2001-06-07 |
DE69937608D1 (de) | 2008-01-03 |
HK1034629A1 (en) | 2001-10-26 |
JP4422901B2 (ja) | 2010-03-03 |
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