GB2222057B - Electro-magnetic broadcast access control method - Google Patents

Electro-magnetic broadcast access control method

Info

Publication number
GB2222057B
GB2222057B GB8809244A GB8809244A GB2222057B GB 2222057 B GB2222057 B GB 2222057B GB 8809244 A GB8809244 A GB 8809244A GB 8809244 A GB8809244 A GB 8809244A GB 2222057 B GB2222057 B GB 2222057B
Authority
GB
United Kingdom
Prior art keywords
electro
control method
access control
broadcast access
magnetic
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
GB8809244A
Other versions
GB8809244D0 (en
GB2222057A (en
Inventor
Clive Vernon Smedley
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.)
CARRIDICE Ltd
Original Assignee
CARRIDICE 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 CARRIDICE Ltd filed Critical CARRIDICE Ltd
Priority to GB8809244A priority Critical patent/GB2222057B/en
Publication of GB8809244D0 publication Critical patent/GB8809244D0/en
Publication of GB2222057A publication Critical patent/GB2222057A/en
Application granted granted Critical
Publication of GB2222057B publication Critical patent/GB2222057B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/22—Countermeasures against jamming including jamming detection and monitoring
    • H04K3/224—Countermeasures against jamming including jamming detection and monitoring with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
    • H04K3/228—Elimination in the received signal of jamming or of data corrupted by jamming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/10—Secret communication by using two signals transmitted simultaneously or successively
GB8809244A 1988-04-19 1988-04-19 Electro-magnetic broadcast access control method Expired - Fee Related GB2222057B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8809244A GB2222057B (en) 1988-04-19 1988-04-19 Electro-magnetic broadcast access control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8809244A GB2222057B (en) 1988-04-19 1988-04-19 Electro-magnetic broadcast access control method

Publications (3)

Publication Number Publication Date
GB8809244D0 GB8809244D0 (en) 1988-05-25
GB2222057A GB2222057A (en) 1990-02-21
GB2222057B true GB2222057B (en) 1992-09-23

Family

ID=10635459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8809244A Expired - Fee Related GB2222057B (en) 1988-04-19 1988-04-19 Electro-magnetic broadcast access control method

Country Status (1)

Country Link
GB (1) GB2222057B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839119A (en) * 1996-09-27 1998-11-17 Xerox Corporation Method of electronic payments that prevents double-spending
GB2332833A (en) * 1997-12-24 1999-06-30 Interactive Magazines Limited Secure credit card transactions over the internet
US6377690B1 (en) * 1998-09-14 2002-04-23 Lucent Technologies Inc. Safe transmission of broadband data messages
JP4794047B2 (en) * 1999-02-16 2011-10-12 リスン・コム・インコーポレーテッド Protected digital file delivery method
EP1696417B1 (en) * 1999-02-16 2017-07-26 Intel Corporation Audio synthesis using digital sampling of coded waveforms
US7099848B1 (en) 1999-02-16 2006-08-29 Listen.Com, Inc. Audio delivery and rendering method and apparatus
US6633982B1 (en) * 1999-03-20 2003-10-14 Wayne Samuel Kurzeja Method and process for managing ultra secure electronic distribution of digital movies to commercial exhibitors
US6857106B1 (en) 1999-09-15 2005-02-15 Listen.Com, Inc. Graphical user interface with moveable, mergeable elements
KR100782255B1 (en) 1999-12-08 2007-12-04 리슨.컴 .인크. Scheduled retrieval, storage and access of media data
EP1490993A1 (en) * 2002-04-04 2004-12-29 Telefonaktiebolaget LM Ericsson (publ) Arrangements and methods for secure data transmission
DE102012216392A1 (en) 2011-09-29 2013-04-04 Continental Teves Ag & Co. Ohg Method and system for the distributed transmission of a communication flow and use of the system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392241A (en) * 1981-04-30 1983-07-05 The United States Of America As Represented By The Secretary Of The Navy Digital interface system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392241A (en) * 1981-04-30 1983-07-05 The United States Of America As Represented By The Secretary Of The Navy Digital interface system

Also Published As

Publication number Publication date
GB8809244D0 (en) 1988-05-25
GB2222057A (en) 1990-02-21

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Legal Events

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

Effective date: 19940419