DE2558147A1 - Signalverteilervorrichtung fuer kabelfernsehen - Google Patents

Signalverteilervorrichtung fuer kabelfernsehen

Info

Publication number
DE2558147A1
DE2558147A1 DE19752558147 DE2558147A DE2558147A1 DE 2558147 A1 DE2558147 A1 DE 2558147A1 DE 19752558147 DE19752558147 DE 19752558147 DE 2558147 A DE2558147 A DE 2558147A DE 2558147 A1 DE2558147 A1 DE 2558147A1
Authority
DE
Germany
Prior art keywords
frequency
switch
diode
series
capacitance
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.)
Withdrawn
Application number
DE19752558147
Other languages
German (de)
English (en)
Inventor
Pieter Den Toonder
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 DE2558147A1 publication Critical patent/DE2558147A1/de
Withdrawn legal-status Critical Current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)
DE19752558147 1974-12-24 1975-12-23 Signalverteilervorrichtung fuer kabelfernsehen Withdrawn DE2558147A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7416880A NL182689C (nl) 1974-12-24 1974-12-24 Signaalverdeelinrichting voor een hoogfrequent kabelnetwerk.

Publications (1)

Publication Number Publication Date
DE2558147A1 true DE2558147A1 (de) 1976-07-01

Family

ID=19822721

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752558147 Withdrawn DE2558147A1 (de) 1974-12-24 1975-12-23 Signalverteilervorrichtung fuer kabelfernsehen

Country Status (13)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725250A1 (de) * 1977-06-03 1978-12-07 Siemens Ag Kabelfernsehanlage mit abschaltbaren teilnehmeranschluessen
DE3045512A1 (de) * 1980-12-03 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektronische durchschalteinrichtung fuer fernseh- und tonrundfunkprogramme
EP0128554A2 (en) * 1983-06-10 1984-12-19 Tocom, Inc. Master/slave converter system
EP0371401A1 (de) * 1988-11-29 1990-06-06 Neuberger Nachrichten- Und Antennentechnik Gmbh Fernadressierbarer Sternverteiler für Fernsehsignale

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1554411A (en) 1975-08-09 1979-10-17 Communications Patents Ltd Control systems
FR2336842B1 (fr) * 1976-08-06 1987-02-27 Stern Joseph Perfectionnements relatifs aux dispositifs de telediffusion par cables ou relatifs a ceux-ci
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
GB2161679B (en) * 1984-07-06 1988-02-24 Cabletime Ltd Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems
FR2615342B1 (fr) * 1987-05-13 1991-09-13 Applic Realisa Electro Systeme de teledistribution comprenant au moins une chaine de television a peage

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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725250A1 (de) * 1977-06-03 1978-12-07 Siemens Ag Kabelfernsehanlage mit abschaltbaren teilnehmeranschluessen
DE3045512A1 (de) * 1980-12-03 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektronische durchschalteinrichtung fuer fernseh- und tonrundfunkprogramme
EP0128554A2 (en) * 1983-06-10 1984-12-19 Tocom, Inc. Master/slave converter system
EP0128554A3 (en) * 1983-06-10 1985-05-29 Tocom, Inc. Master/slave converter system
EP0371401A1 (de) * 1988-11-29 1990-06-06 Neuberger Nachrichten- Und Antennentechnik Gmbh Fernadressierbarer Sternverteiler für Fernsehsignale

Also Published As

Publication number Publication date
ATA955075A (de) 1980-09-15
DK146915B (da) 1984-02-06
NL182689B (nl) 1987-11-16
JPS608675B2 (ja) 1985-03-05
NL7416880A (nl) 1976-06-28
DK146915C (da) 1984-07-16
SE420036B (sv) 1981-09-07
GB1507859A (en) 1978-04-19
FR2296335B3 (nl) 1980-06-20
NL182689C (nl) 1988-04-18
BE836589A (fr) 1976-06-14
FI67006C (fi) 1984-12-10
FR2296335A1 (fr) 1976-07-23
JPS5178621A (ja) 1976-07-08
CA1033053A (en) 1978-06-13
FI753640A (nl) 1976-06-25
FI67006B (fi) 1984-08-31
SE7514561L (sv) 1976-06-25
AT361996B (de) 1981-04-10
IT1052630B (it) 1981-07-20
DK586075A (da) 1976-06-25
ES443805A1 (es) 1977-04-16

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Legal Events

Date Code Title Description
OGA New person/name/address of the applicant
8139 Disposal/non-payment of the annual fee