DE2558147A1 - Signalverteilervorrichtung fuer kabelfernsehen - Google Patents
Signalverteilervorrichtung fuer kabelfernsehenInfo
- 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- Withdrawn
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)
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)
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)
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)
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 |
-
1974
- 1974-12-24 NL NL7416880A patent/NL182689C/nl not_active IP Right Cessation
-
1975
- 1975-05-23 CA CA227,709A patent/CA1033053A/en not_active Expired
- 1975-06-09 JP JP50069455A patent/JPS608675B2/ja not_active Expired
- 1975-12-12 BE BE162705A patent/BE836589A/xx not_active IP Right Cessation
- 1975-12-16 AT AT955075A patent/AT361996B/de not_active IP Right Cessation
- 1975-12-22 SE SE7514561A patent/SE420036B/xx not_active IP Right Cessation
- 1975-12-22 DK DK586075A patent/DK146915C/da not_active IP Right Cessation
- 1975-12-23 DE DE19752558147 patent/DE2558147A1/de not_active Withdrawn
- 1975-12-23 IT IT5285775A patent/IT1052630B/it active
- 1975-12-23 ES ES443805A patent/ES443805A1/es not_active Expired
- 1975-12-23 FR FR7539520A patent/FR2296335A1/fr active Granted
- 1975-12-23 FI FI753640A patent/FI67006C/fi not_active IP Right Cessation
- 1975-12-24 GB GB5283675A patent/GB1507859A/en not_active Expired
Cited By (5)
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 |