DE68923294D1 - Kanalsperrverfahren und gerät für kabelfernsehaussenstellen. - Google Patents

Kanalsperrverfahren und gerät für kabelfernsehaussenstellen.

Info

Publication number
DE68923294D1
DE68923294D1 DE68923294T DE68923294T DE68923294D1 DE 68923294 D1 DE68923294 D1 DE 68923294D1 DE 68923294 T DE68923294 T DE 68923294T DE 68923294 T DE68923294 T DE 68923294T DE 68923294 D1 DE68923294 D1 DE 68923294D1
Authority
DE
Germany
Prior art keywords
variable frequency
frequency
oscillators
calibration routine
controlling
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 - Lifetime
Application number
DE68923294T
Other languages
English (en)
Other versions
DE68923294T2 (de
Inventor
Lamar West
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.)
Rateze Remote Mgmt LLC
Original Assignee
Scientific Atlanta LLC
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 Scientific Atlanta LLC filed Critical Scientific Atlanta LLC
Publication of DE68923294D1 publication Critical patent/DE68923294D1/de
Application granted granted Critical
Publication of DE68923294T2 publication Critical patent/DE68923294T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • 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
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • 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
DE68923294T 1988-12-05 1989-12-04 Kanalsperrverfahren und gerät für kabelfernsehaussenstellen. Expired - Lifetime DE68923294T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/279,619 US5014309A (en) 1988-03-10 1988-12-05 Off-premises cable television channel interdiction method and apparatus
PCT/US1989/005357 WO1990006656A1 (en) 1988-12-05 1989-12-04 Off-premises cable television channel interdiction method and apparatus

Publications (2)

Publication Number Publication Date
DE68923294D1 true DE68923294D1 (de) 1995-08-03
DE68923294T2 DE68923294T2 (de) 1995-11-09

Family

ID=23069738

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68923294T Expired - Lifetime DE68923294T2 (de) 1988-12-05 1989-12-04 Kanalsperrverfahren und gerät für kabelfernsehaussenstellen.

Country Status (12)

Country Link
US (1) US5014309A (de)
EP (1) EP0446280B1 (de)
JP (1) JP3162371B2 (de)
KR (1) KR0139106B1 (de)
CN (1) CN1028468C (de)
AT (1) ATE124591T1 (de)
AU (1) AU4808890A (de)
CA (1) CA2003698C (de)
DE (1) DE68923294T2 (de)
ES (1) ES2076356T3 (de)
MX (1) MX165533B (de)
WO (1) WO1990006656A1 (de)

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US5287539A (en) * 1988-03-10 1994-02-15 Scientific-Atlanta, Inc. Interdiction program denial system for jamming audio and video signals
US5345504A (en) * 1988-03-10 1994-09-06 Scientific-Atlanta, Inc. Differential compensation control for off-premises CATV system
US5144267A (en) * 1989-12-06 1992-09-01 Scientific-Atlanta, Inc. Variable slope network for off-premises CATV system
ES2135399T3 (es) * 1990-11-27 1999-11-01 Blonder Tongue Lab Metodo y aparato para sistema de interdiccion de pago por vision de catv (television por cable).
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US5243651A (en) * 1992-06-10 1993-09-07 Scientific-Atlanta, Inc. Diagnostic method and apparatus for a cable television interdiction system
WO1993026126A1 (en) * 1992-06-10 1993-12-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with frequency change inhibit function
WO1993026127A1 (en) * 1992-06-10 1993-12-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with direct memory control of variable frequency elements
US5243647A (en) * 1992-06-10 1993-09-07 Scientific-Atlanta, Inc. Method and apparatus for broadband signal distribution
US5278908A (en) * 1992-06-10 1994-01-11 Scientific-Atlanta, Inc. Interdiction method and apparatus with programmable jamming effectiveness
US5265160A (en) * 1992-06-10 1993-11-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with pulsed mode jamming
US5317635A (en) * 1992-06-10 1994-05-31 Scientific-Atlanta, Inc. Interdiction method and apparatus with mode control for variable frequency elements
US5311325A (en) * 1992-06-10 1994-05-10 Scientific Atlanta, Inc. Method and apparatus for providing periodic subscription television services
US5604528A (en) * 1992-06-10 1997-02-18 Scientific-Atlanta, Inc. Method and apparatus for providing periodic subscription television services
US5495408A (en) * 1992-06-10 1996-02-27 Rockwell International Corporation Method and apparatus for signal tracking using feedback control loop
US5396642A (en) * 1992-08-14 1995-03-07 Electroline Equipment Inc. Variable frequency CATV jamming method and apparatus
US5682426A (en) * 1993-07-12 1997-10-28 California Amplifier Subscriber site method and apparatus for decoding and selective interdiction of television channels
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US6188870B1 (en) 1996-10-07 2001-02-13 General Instrument Corporation Passive interdiction system for scrambling
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US7222358B2 (en) 1999-12-13 2007-05-22 Finisar Corporation Cable television return link system with high data-rate side-band communication channels
US7257328B2 (en) 1999-12-13 2007-08-14 Finisar Corporation System and method for transmitting data on return path of a cable television system
DE10044193B4 (de) * 2000-09-07 2005-06-09 Ewt Elektro- U. Nachrichtentechnik Gmbh Verfahren und Vorrichtung zur Zugangskontrolle zu Programmangeboten oder Datendiensten in Antennenverteiler- oder Kabelanlagen
US7971225B2 (en) * 2002-02-08 2011-06-28 Finisar Corporation Bandpass component decimation and transmission of data in cable television digital return path
US7725036B2 (en) 2002-02-12 2010-05-25 Finisar Corporation Efficient transmission of digital return path data in cable television return path
US7751718B2 (en) * 2002-02-12 2010-07-06 Finisar Corporation Efficient transmission of digital return path data in cable television return path
US8156535B2 (en) * 2002-02-12 2012-04-10 Finsar Corporation Data rate compression device for cable television return path using bandpass puncturing
US7359447B2 (en) * 2002-02-19 2008-04-15 Finisar Corporation Asynchronous digital signal combiner and method of combining asynchronous digital signals in cable television return path
US7689128B2 (en) * 2002-10-30 2010-03-30 Finisar Corporation Return path transmitter with extended digital processing circuitry
US7519297B2 (en) 2002-11-08 2009-04-14 Finisar Corporation Cable television system with separate radio frequency hub and ethernet hub
CN2612188Y (zh) * 2003-04-29 2004-04-14 施志纣 具有频道分级选择功能的可寻址分支器
US8032916B2 (en) * 2004-05-12 2011-10-04 Finisar Corporation Single master clock control of Ethernet data transfer over both a cable TV return path and an Ethernet forward path
US7765576B2 (en) * 2004-05-12 2010-07-27 Finsiar Corporation Changing communication mode in a CATV pathway using mute commands
US7519078B2 (en) * 2004-05-12 2009-04-14 Finisar Corporation Automated ethernet configuration of CATV network
US8990881B2 (en) * 2009-03-30 2015-03-24 Ppc Broadband, Inc. Upstream bandwidth conditioning device
US9107067B2 (en) * 2012-09-11 2015-08-11 Empire Technology Development Llc Secured communication
EP3697004A3 (de) * 2019-02-15 2020-12-02 Tata Consultancy Services Limited System, verfahren und computerlesbares speichermedium zum unterbrechen von unbefugter kommunikation in niederfrequenz-funkkommunikationsvorrichtungen
IT202100013946A1 (it) * 2021-05-27 2022-11-27 Emme Esse S P A Derivatore per impianti televisivi

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Also Published As

Publication number Publication date
EP0446280B1 (de) 1995-06-28
CN1046826A (zh) 1990-11-07
WO1990006656A1 (en) 1990-06-14
ATE124591T1 (de) 1995-07-15
KR910700590A (ko) 1991-03-15
EP0446280A1 (de) 1991-09-18
AU4808890A (en) 1990-06-26
US5014309A (en) 1991-05-07
JP3162371B2 (ja) 2001-04-25
JPH04505078A (ja) 1992-09-03
CA2003698A1 (en) 1990-06-05
CA2003698C (en) 1995-10-03
CN1028468C (zh) 1995-05-17
DE68923294T2 (de) 1995-11-09
KR0139106B1 (ko) 1998-05-15
ES2076356T3 (es) 1995-11-01
MX165533B (es) 1992-11-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BLONDER-TONGUE LABORATORIES, INC., OLD BRIDGE, N.J

8328 Change in the person/name/address of the agent

Free format text: HAGEMANN, BRAUN & HELD, 81675 MUENCHEN

8328 Change in the person/name/address of the agent

Representative=s name: STIPPL PATENTANWAELTE, 90482 NUERNBERG

8327 Change in the person/name/address of the patent owner

Owner name: BLONDER TONGUE INVESTMENT COMPANY, WILMINGTON,, US

8328 Change in the person/name/address of the agent

Representative=s name: HAGEMANN, H., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW.,

8327 Change in the person/name/address of the patent owner

Owner name: MOONBEAM L.L.C., WILMINGTON, DEL., US