WO1999038325A3 - Conditional access - Google Patents

Conditional access Download PDF

Info

Publication number
WO1999038325A3
WO1999038325A3 PCT/IB1999/000037 IB9900037W WO9938325A3 WO 1999038325 A3 WO1999038325 A3 WO 1999038325A3 IB 9900037 W IB9900037 W IB 9900037W WO 9938325 A3 WO9938325 A3 WO 9938325A3
Authority
WO
WIPO (PCT)
Prior art keywords
conditional access
control words
words
scrambling
descrambling
Prior art date
Application number
PCT/IB1999/000037
Other languages
French (fr)
Other versions
WO1999038325A2 (en
Inventor
Willigen Engelbertus Van
Robert Schipper
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8233310&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1999038325(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koninkl Philips Electronics Nv, Philips Svenska Ab filed Critical Koninkl Philips Electronics Nv
Priority to JP53808699A priority Critical patent/JP2001515693A/en
Priority to KR1019997008637A priority patent/KR20010005574A/en
Priority to EP99900028A priority patent/EP0970585A2/en
Publication of WO1999038325A2 publication Critical patent/WO1999038325A2/en
Publication of WO1999038325A3 publication Critical patent/WO1999038325A3/en

Links

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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
    • 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
    • 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

Abstract

Conditional access is used to prevent unauthorized use, for exam ple, reception of signals. A conditional access apparatus performs a combination of scrambling and encryption to obtain these results. Known conditional access apparatuses use a control word generator to obtain the requested words, and an encrypter to encrypt the control words. The encrypted control words are sent together with the information to make descrambling possible at the receiving side. The invention proposes the use of a table of control words and encrypted control words as entitlement control words for realizing scrambling and descrambling.
PCT/IB1999/000037 1998-01-23 1999-01-14 Conditional access WO1999038325A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP53808699A JP2001515693A (en) 1998-01-23 1999-01-14 Conditional access
KR1019997008637A KR20010005574A (en) 1998-01-23 1999-01-14 Conditional access
EP99900028A EP0970585A2 (en) 1998-01-23 1999-01-14 Conditional access

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98200181 1998-01-23
EP98200181.0 1998-01-23

Publications (2)

Publication Number Publication Date
WO1999038325A2 WO1999038325A2 (en) 1999-07-29
WO1999038325A3 true WO1999038325A3 (en) 1999-09-30

Family

ID=8233310

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1999/000037 WO1999038325A2 (en) 1998-01-23 1999-01-14 Conditional access

Country Status (6)

Country Link
US (1) US6430290B1 (en)
EP (1) EP0970585A2 (en)
JP (1) JP2001515693A (en)
KR (1) KR20010005574A (en)
CN (1) CN1179566C (en)
WO (1) WO1999038325A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0152788B1 (en) 1994-11-26 1998-10-15 이헌조 Copy protecting method and apparatus of digital image system
KR0136458B1 (en) 1994-12-08 1998-05-15 구자홍 Copy protection apparatus of digital magnetic recording and reproducing system
EP1111923A1 (en) * 1999-12-22 2001-06-27 Irdeto Access B.V. Method for operating a conditional access system for broadcast applications
ATE265787T1 (en) * 2000-03-10 2004-05-15 Rudolf Ritter METHOD, COMMUNICATION SYSTEM AND RECEIVING DEVICE FOR THE BILLING OF ACCESS-CONTROLLED PROGRAMS AND/OR DATA FROM BROADCAST STATIONS
US6645709B1 (en) * 2002-08-12 2003-11-11 Eastman Kodak Company Photographic color developing composition containing calcium ion sequestering agent combination and method of use
US7801820B2 (en) * 2003-01-13 2010-09-21 Sony Corporation Real-time delivery of license for previously stored encrypted content
US7546618B2 (en) * 2004-06-30 2009-06-09 Scientific-Atlanta, Inc. Lower-power standby mode for consumer electronics
US7386128B2 (en) * 2004-12-29 2008-06-10 General Instrument Corporation Conditional access system providing access to multiple programs or services
US8561114B2 (en) * 2007-10-13 2013-10-15 The Directv Group, Inc. Method and system for ordering video content from a mobile device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151886A (en) * 1983-12-21 1985-07-24 British Broadcasting Corp Conditional-access broadcast transmission
US5420866A (en) * 1994-03-29 1995-05-30 Scientific-Atlanta, Inc. Methods for providing conditional access information to decoders in a packet-based multiplexed communications system
WO1997038530A1 (en) * 1996-04-03 1997-10-16 Digco B.V. Method for providing a secure communication between two devices and application of this method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699355B1 (en) * 1992-12-15 1995-02-17 Matra Communication Method for building digital multiplex and device for implementing said method.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151886A (en) * 1983-12-21 1985-07-24 British Broadcasting Corp Conditional-access broadcast transmission
US5420866A (en) * 1994-03-29 1995-05-30 Scientific-Atlanta, Inc. Methods for providing conditional access information to decoders in a packet-based multiplexed communications system
WO1997038530A1 (en) * 1996-04-03 1997-10-16 Digco B.V. Method for providing a secure communication between two devices and application of this method

Also Published As

Publication number Publication date
KR20010005574A (en) 2001-01-15
WO1999038325A2 (en) 1999-07-29
EP0970585A2 (en) 2000-01-12
CN1262843A (en) 2000-08-09
JP2001515693A (en) 2001-09-18
CN1179566C (en) 2004-12-08
US6430290B1 (en) 2002-08-06

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