SE420036B - SIGNAL DISTRIBUTION DEVICE FOR A CABLE TELEVISION NETWORK - Google Patents

SIGNAL DISTRIBUTION DEVICE FOR A CABLE TELEVISION NETWORK

Info

Publication number
SE420036B
SE420036B SE7514561A SE7514561A SE420036B SE 420036 B SE420036 B SE 420036B SE 7514561 A SE7514561 A SE 7514561A SE 7514561 A SE7514561 A SE 7514561A SE 420036 B SE420036 B SE 420036B
Authority
SE
Sweden
Prior art keywords
distribution device
cable television
signal distribution
television network
network
Prior art date
Application number
SE7514561A
Other languages
Swedish (sv)
Other versions
SE7514561L (en
Inventor
Toonder P Der
Original Assignee
Oak Communications Inc
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 Communications Inc filed Critical Oak Communications Inc
Publication of SE7514561L publication Critical patent/SE7514561L/en
Publication of SE420036B publication Critical patent/SE420036B/en

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
SE7514561A 1974-12-24 1975-12-22 SIGNAL DISTRIBUTION DEVICE FOR A CABLE TELEVISION NETWORK SE420036B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7416880A NL182689C (en) 1974-12-24 1974-12-24 SIGNAL DISTRIBUTION DEVICE FOR A HIGH-FREQUENT CABLE NETWORK.

Publications (2)

Publication Number Publication Date
SE7514561L SE7514561L (en) 1976-06-25
SE420036B true SE420036B (en) 1981-09-07

Family

ID=19822721

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7514561A SE420036B (en) 1974-12-24 1975-12-22 SIGNAL DISTRIBUTION DEVICE FOR A CABLE TELEVISION NETWORK

Country Status (13)

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

Families Citing this family (11)

* 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 (en) * 1976-08-06 1987-02-27 Stern Joseph IMPROVEMENTS RELATING TO OR RELATING TO CABLE TELEVISION DEVICES
DE2725250C3 (en) * 1977-06-03 1982-03-18 Siemens AG, 1000 Berlin und 8000 München Cable television system with subscriber connections that can be switched off
DE3045512C2 (en) * 1980-12-03 1982-10-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electronic switching device for television and audio broadcast programs
JPS58221577A (en) * 1982-06-18 1983-12-23 Yagi Antenna Co Ltd Distributing system of catv signal
JPS5921187A (en) * 1982-07-27 1984-02-03 Uro Denshi Kogyo Kk Branching distributor of common reception of wire broadcasting
US4521809A (en) * 1982-12-29 1985-06-04 North American Philips Corporation Method and apparatus for controlling access to selected television programs
ATE33327T1 (en) * 1983-06-10 1988-04-15 Tocom MAIN/SUB CONVERSION SYSTEM.
GB2161679B (en) * 1984-07-06 1988-02-24 Cabletime Ltd Improvements in or relating to signal jamming apparatuses for frequency division multiplex systems
FR2615342B1 (en) * 1987-05-13 1991-09-13 Applic Realisa Electro TELEVISION SYSTEM INCLUDING AT LEAST ONE TELEVISION CHANNEL
DE3840254C1 (en) * 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

Also Published As

Publication number Publication date
DK146915B (en) 1984-02-06
DE2558147A1 (en) 1976-07-01
IT1052630B (en) 1981-07-20
NL182689C (en) 1988-04-18
FR2296335B3 (en) 1980-06-20
JPS608675B2 (en) 1985-03-05
CA1033053A (en) 1978-06-13
AT361996B (en) 1981-04-10
GB1507859A (en) 1978-04-19
ES443805A1 (en) 1977-04-16
SE7514561L (en) 1976-06-25
NL182689B (en) 1987-11-16
ATA955075A (en) 1980-09-15
BE836589A (en) 1976-06-14
NL7416880A (en) 1976-06-28
DK586075A (en) 1976-06-25
JPS5178621A (en) 1976-07-08
FI67006C (en) 1984-12-10
FR2296335A1 (en) 1976-07-23
FI67006B (en) 1984-08-31
FI753640A (en) 1976-06-25
DK146915C (en) 1984-07-16

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