IT1052630B - SIGNAL DISTRIBUTION DEVICE FOR CABLE TELEVISION SYSTEMS - Google Patents

SIGNAL DISTRIBUTION DEVICE FOR CABLE TELEVISION SYSTEMS

Info

Publication number: IT1052630B
Authority: IT; Italy
Prior art keywords: distribution device; cable television; signal distribution; television systems; systems
Prior art date: 1974-12-24

Application number

IT52857/75A

Other languages

Italian (it)

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.)

1974-12-24

Filing date

1975-12-23

Publication date

1981-07-20

1975-12-23 Application filed by Oak Holland Bv filed Critical Oak Holland Bv

1981-07-20 Application granted granted Critical

1981-07-20 Publication of IT1052630B publication Critical patent/IT1052630B/en

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)

IT52857/75A 1974-12-24 1975-12-23 SIGNAL DISTRIBUTION DEVICE FOR CABLE TELEVISION SYSTEMS IT1052630B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NLAANVRAGE7416880,A NL182689C (en)	1974-12-24	1974-12-24	SIGNAL DISTRIBUTION DEVICE FOR A HIGH-FREQUENT CABLE NETWORK.

Publications (1)

Publication Number	Publication Date
IT1052630B true IT1052630B (en)	1981-07-20

Family

ID=19822721

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT52857/75A IT1052630B (en)	1974-12-24	1975-12-23	SIGNAL DISTRIBUTION DEVICE FOR CABLE TELEVISION SYSTEMS

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	CATV signal distribution method
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
EP0128554B1 (en) *	1983-06-10	1988-03-30	Tocom, Inc.	Master/slave converter 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

1974
- 1974-12-24 NL NLAANVRAGE7416880,A patent/NL182689C/en 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/en not_active Expired
- 1975-12-12 BE BE162705A patent/BE836589A/en not_active IP Right Cessation
- 1975-12-16 AT AT955075A patent/AT361996B/en not_active IP Right Cessation
- 1975-12-22 DK DK586075A patent/DK146915C/en not_active IP Right Cessation
- 1975-12-22 SE SE7514561A patent/SE420036B/en not_active IP Right Cessation
- 1975-12-23 FR FR7539520A patent/FR2296335A1/en active Granted
- 1975-12-23 IT IT52857/75A patent/IT1052630B/en active
- 1975-12-23 FI FI753640A patent/FI67006C/en not_active IP Right Cessation
- 1975-12-23 DE DE19752558147 patent/DE2558147A1/en not_active Withdrawn
- 1975-12-23 ES ES443805A patent/ES443805A1/en not_active Expired
- 1975-12-24 GB GB52836/75A patent/GB1507859A/en not_active Expired

Also Published As

Publication number	Publication date
FI67006C (en)	1984-12-10
FR2296335A1 (en)	1976-07-23
BE836589A (en)	1976-06-14
NL7416880A (en)	1976-06-28
JPS5178621A (en)	1976-07-08
JPS608675B2 (en)	1985-03-05
DE2558147A1 (en)	1976-07-01
AT361996B (en)	1981-04-10
ES443805A1 (en)	1977-04-16
SE7514561L (en)	1976-06-25
NL182689C (en)	1988-04-18
CA1033053A (en)	1978-06-13
DK146915B (en)	1984-02-06
NL182689B (en)	1987-11-16
FI753640A7 (en)	1976-06-25
DK586075A (en)	1976-06-25
FI67006B (en)	1984-08-31
FR2296335B3 (en)	1980-06-20
DK146915C (en)	1984-07-16
ATA955075A (en)	1980-09-15
GB1507859A (en)	1978-04-19
SE420036B (en)	1981-09-07

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Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19931229