GB2241096B - Apparatus and method for controlling access to broadcast signals - Google Patents

Apparatus and method for controlling access to broadcast signals

Info

Publication number
GB2241096B
GB2241096B GB9103138A GB9103138A GB2241096B GB 2241096 B GB2241096 B GB 2241096B GB 9103138 A GB9103138 A GB 9103138A GB 9103138 A GB9103138 A GB 9103138A GB 2241096 B GB2241096 B GB 2241096B
Authority
GB
United Kingdom
Prior art keywords
broadcast signals
controlling access
access
controlling
broadcast
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB9103138A
Other versions
GB9103138D0 (en
GB2241096A (en
Inventor
William Mcmullan Hawthorne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enfranchise Sixty Ltd
Original Assignee
Enfranchise Sixty Ltd
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
Application filed by Enfranchise Sixty Ltd filed Critical Enfranchise Sixty Ltd
Publication of GB9103138D0 publication Critical patent/GB9103138D0/en
Publication of GB2241096A publication Critical patent/GB2241096A/en
Application granted granted Critical
Publication of GB2241096B publication Critical patent/GB2241096B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/93—Wired transmission systems
    • H04H60/94—Telephonic networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
GB9103138A 1990-02-14 1991-02-14 Apparatus and method for controlling access to broadcast signals Expired - Fee Related GB2241096B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909003325A GB9003325D0 (en) 1990-02-14 1990-02-14 Apparatus and method for controlling access to broadcast signals

Publications (3)

Publication Number Publication Date
GB9103138D0 GB9103138D0 (en) 1991-04-03
GB2241096A GB2241096A (en) 1991-08-21
GB2241096B true GB2241096B (en) 1994-03-23

Family

ID=10670966

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909003325A Pending GB9003325D0 (en) 1990-02-14 1990-02-14 Apparatus and method for controlling access to broadcast signals
GB9103138A Expired - Fee Related GB2241096B (en) 1990-02-14 1991-02-14 Apparatus and method for controlling access to broadcast signals

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909003325A Pending GB9003325D0 (en) 1990-02-14 1990-02-14 Apparatus and method for controlling access to broadcast signals

Country Status (4)

Country Link
EP (1) EP0515448A1 (en)
AU (1) AU7236291A (en)
GB (2) GB9003325D0 (en)
WO (1) WO1991012693A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5835864A (en) * 1991-10-03 1998-11-10 Thomson Consumer Electronics S.A. Method and apparatus for customizing a device with a smart card
JPH07283809A (en) * 1994-04-08 1995-10-27 Mitsubishi Corp Ciphering key system
US5719938A (en) * 1994-08-01 1998-02-17 Lucent Technologies Inc. Methods for providing secure access to shared information
US6324592B1 (en) 1997-02-25 2001-11-27 Keystone Aerospace Apparatus and method for a mobile computer architecture and input/output management system
US6636833B1 (en) 1998-03-25 2003-10-21 Obis Patents Ltd. Credit card system and method
US6324526B1 (en) 1999-01-15 2001-11-27 D'agostino John System and method for performing secure credit card purchases
CA2366517C (en) 1999-04-13 2006-11-07 Orbis Patents Limited Person-to-person, person-to-business, business-to-person, and business-to-business financial transaction system
US6804357B1 (en) 2000-04-28 2004-10-12 Nokia Corporation Method and system for providing secure subscriber content data
EP1265202A1 (en) 2001-06-04 2002-12-11 Orbis Patents Limited Business-to-business commerce using financial transaction numbers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127381A1 (en) * 1983-05-27 1984-12-05 M/A-Com Government Systems, Inc. Key signal encryption and distribution system for controlling scrambling and selective, remote descrambling of television signals
EP0178809A1 (en) * 1984-10-12 1986-04-23 John David Wiedemer High security pay television system
EP0179612A2 (en) * 1984-10-26 1986-04-30 General Instrument Corporation Cryptographic system for direct broadcast satellite network
WO1986007224A1 (en) * 1985-05-24 1986-12-04 Scientific Atlanta, Inc. Method and apparatus for scrambling and descrambling television signals
GB2214677A (en) * 1988-01-26 1989-09-06 Philips Electronic Associated Decoding transmitted scrambled signals
EP0343805A2 (en) * 1988-05-27 1989-11-29 General Instrument Corporation Of Delaware Reproduction of secure keys by using distributed key generation data

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132860B (en) * 1982-12-21 1987-03-18 British Broadcasting Corp Conditional -access broadcast transmission
US4634808A (en) * 1984-03-15 1987-01-06 M/A-Com Government Systems, Inc. Descrambler subscriber key production system utilizing key seeds stored in descrambler
GB8509390D0 (en) * 1985-04-12 1985-05-15 Paytel Ltd Video transmission system
FR2641152B1 (en) * 1988-12-23 1996-05-10 Europ Rech Electr Lab

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0127381A1 (en) * 1983-05-27 1984-12-05 M/A-Com Government Systems, Inc. Key signal encryption and distribution system for controlling scrambling and selective, remote descrambling of television signals
EP0178809A1 (en) * 1984-10-12 1986-04-23 John David Wiedemer High security pay television system
EP0179612A2 (en) * 1984-10-26 1986-04-30 General Instrument Corporation Cryptographic system for direct broadcast satellite network
WO1986007224A1 (en) * 1985-05-24 1986-12-04 Scientific Atlanta, Inc. Method and apparatus for scrambling and descrambling television signals
GB2214677A (en) * 1988-01-26 1989-09-06 Philips Electronic Associated Decoding transmitted scrambled signals
EP0343805A2 (en) * 1988-05-27 1989-11-29 General Instrument Corporation Of Delaware Reproduction of secure keys by using distributed key generation data

Also Published As

Publication number Publication date
WO1991012693A1 (en) 1991-08-22
GB9103138D0 (en) 1991-04-03
AU7236291A (en) 1991-09-03
GB2241096A (en) 1991-08-21
GB9003325D0 (en) 1990-04-11
EP0515448A1 (en) 1992-12-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950214