GB1507859A - Signal distribution device for a cable television network - Google Patents

Signal distribution device for a cable television network

Info

Publication number
GB1507859A
GB1507859A GB52836/75A GB5283675A GB1507859A GB 1507859 A GB1507859 A GB 1507859A GB 52836/75 A GB52836/75 A GB 52836/75A GB 5283675 A GB5283675 A GB 5283675A GB 1507859 A GB1507859 A GB 1507859A
Authority
GB
United Kingdom
Prior art keywords
line
switch
programmes
programme
dec
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
GB52836/75A
Other languages
English (en)
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.)
Oak Holland BV
Original Assignee
Oak Holland BV
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 Oak Holland BV filed Critical Oak Holland BV
Publication of GB1507859A publication Critical patent/GB1507859A/en
Expired 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
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
    • H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/166—Passage/non-passage of the television signal, e.g. jamming, band suppression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/14—Jamming or countermeasure used for a particular application for the transfer of light or images, e.g. for video-surveillance, for television or from a computer screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Details Of Television Systems (AREA)
GB52836/75A 1974-12-24 1975-12-24 Signal distribution device for a cable television network Expired GB1507859A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7416880,A NL182689C (nl) 1974-12-24 1974-12-24 Signaalverdeelinrichting voor een hoogfrequent kabelnetwerk.

Publications (1)

Publication Number Publication Date
GB1507859A true GB1507859A (en) 1978-04-19

Family

ID=19822721

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52836/75A Expired GB1507859A (en) 1974-12-24 1975-12-24 Signal distribution device for a cable television network

Country Status (13)

Country Link
JP (1) JPS608675B2 (enExample)
AT (1) AT361996B (enExample)
BE (1) BE836589A (enExample)
CA (1) CA1033053A (enExample)
DE (1) DE2558147A1 (enExample)
DK (1) DK146915C (enExample)
ES (1) ES443805A1 (enExample)
FI (1) FI67006C (enExample)
FR (1) FR2296335A1 (enExample)
GB (1) GB1507859A (enExample)
IT (1) IT1052630B (enExample)
NL (1) NL182689C (enExample)
SE (1) SE420036B (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367557A (en) 1975-08-09 1983-01-04 Stern Joseph L Wired broadcasting systems
GB2161679A (en) * 1984-07-06 1986-01-15 Cabletime Ltd Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2336842B1 (fr) * 1976-08-06 1987-02-27 Stern Joseph Perfectionnements relatifs aux dispositifs de telediffusion par cables ou relatifs a ceux-ci
DE2725250C3 (de) * 1977-06-03 1982-03-18 Siemens AG, 1000 Berlin und 8000 München Kabelfernsehanlage mit abschaltbaren Teilnehmeranschlüssen
DE3045512C2 (de) * 1980-12-03 1982-10-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektronische Durchschalteinrichtung für Fernseh- und Tonrundfunkprogramme
JPS58221577A (ja) * 1982-06-18 1983-12-23 Yagi Antenna Co Ltd Ｃａｔｖ信号分配方式
JPS5921187A (ja) * 1982-07-27 1984-02-03 Uro Denshi Kogyo Kk 有線放送共同受信用分岐・分配器
US4521809A (en) * 1982-12-29 1985-06-04 North American Philips Corporation Method and apparatus for controlling access to selected television programs
DE3470270D1 (en) * 1983-06-10 1988-05-05 Tocom Master/slave converter system
FR2615342B1 (fr) * 1987-05-13 1991-09-13 Applic Realisa Electro Systeme de teledistribution comprenant au moins une chaine de television a peage
DE3840254C1 (enExample) * 1988-11-29 1990-06-07 Neuberger Nachrichten- Und Antennentechnik Gmbh, 8000 Muenchen, De

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790700A (en) * 1971-12-17 1974-02-05 Hughes Aircraft Co Catv program control system
US3789131A (en) * 1972-08-03 1974-01-29 Oak Industries Inc Selective coding system for subscription television

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367557A (en) 1975-08-09 1983-01-04 Stern Joseph L Wired broadcasting systems
GB2161679A (en) * 1984-07-06 1986-01-15 Cabletime Ltd Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems

Also Published As

Publication number Publication date
ES443805A1 (es) 1977-04-16
DK146915B (da) 1984-02-06
AT361996B (de) 1981-04-10
CA1033053A (en) 1978-06-13
IT1052630B (it) 1981-07-20
FI753640A7 (enExample) 1976-06-25
DK586075A (da) 1976-06-25
ATA955075A (de) 1980-09-15
JPS5178621A (en) 1976-07-08
DE2558147A1 (de) 1976-07-01
FR2296335B3 (enExample) 1980-06-20
DK146915C (da) 1984-07-16
NL182689B (nl) 1987-11-16
SE420036B (sv) 1981-09-07
BE836589A (fr) 1976-06-14
JPS608675B2 (ja) 1985-03-05
NL182689C (nl) 1988-04-18
FI67006B (fi) 1984-08-31
FI67006C (fi) 1984-12-10
FR2296335A1 (fr) 1976-07-23
SE7514561L (sv) 1976-06-25
NL7416880A (nl) 1976-06-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19951223