GB2161679B - Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems - Google Patents

Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems

Info

Publication number
GB2161679B
GB2161679B GB08417373A GB8417373A GB2161679B GB 2161679 B GB2161679 B GB 2161679B GB 08417373 A GB08417373 A GB 08417373A GB 8417373 A GB8417373 A GB 8417373A GB 2161679 B GB2161679 B GB 2161679B
Authority
GB
United Kingdom
Prior art keywords
relating
frequency division
division multiplex
multiplex systems
signal jamming
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
Application number
GB08417373A
Other versions
GB8417373D0 (en
GB2161679A (en
Inventor
David Mann
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.)
CABLETIME Ltd
Original Assignee
CABLETIME 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 CABLETIME Ltd filed Critical CABLETIME Ltd
Priority to GB08417373A priority Critical patent/GB2161679B/en
Publication of GB8417373D0 publication Critical patent/GB8417373D0/en
Publication of GB2161679A publication Critical patent/GB2161679A/en
Application granted granted Critical
Publication of GB2161679B publication Critical patent/GB2161679B/en
Expired 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
    • 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
    • H04H60/15—Arrangements for conditional access to broadcast information or to broadcast-related services on receiving information
GB08417373A 1984-07-06 1984-07-06 Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems Expired GB2161679B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08417373A GB2161679B (en) 1984-07-06 1984-07-06 Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08417373A GB2161679B (en) 1984-07-06 1984-07-06 Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems

Publications (3)

Publication Number Publication Date
GB8417373D0 GB8417373D0 (en) 1984-08-30
GB2161679A GB2161679A (en) 1986-01-15
GB2161679B true GB2161679B (en) 1988-02-24

Family

ID=10563568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08417373A Expired GB2161679B (en) 1984-07-06 1984-07-06 Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems

Country Status (1)

Country Link
GB (1) GB2161679B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3058894B2 (en) * 1990-07-02 2000-07-04 松下電器産業株式会社 CATV transmission equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL182689C (en) * 1974-12-24 1988-04-18 Oak Communications Inc SIGNAL DISTRIBUTION DEVICE FOR A HIGH-FREQUENT CABLE NETWORK.

Also Published As

Publication number Publication date
GB8417373D0 (en) 1984-08-30
GB2161679A (en) 1986-01-15

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Legal Events

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

Effective date: 19930706