ATE124591T1 - Kanalsperrverfahren und gerät für kabelfernsehaussenstellen. - Google Patents
Kanalsperrverfahren und gerät für kabelfernsehaussenstellen.Info
- Publication number
- ATE124591T1 ATE124591T1 AT90900676T AT90900676T ATE124591T1 AT E124591 T1 ATE124591 T1 AT E124591T1 AT 90900676 T AT90900676 T AT 90900676T AT 90900676 T AT90900676 T AT 90900676T AT E124591 T1 ATE124591 T1 AT E124591T1
- Authority
- AT
- Austria
- Prior art keywords
- variable frequency
- frequency
- oscillators
- calibration routine
- controlling
- Prior art date
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
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)
- Superheterodyne Receivers (AREA)
- Near-Field Transmission Systems (AREA)
- Communication Cables (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (1)
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE124591T1 true ATE124591T1 (de) | 1995-07-15 |
Family
ID=23069738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT90900676T ATE124591T1 (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) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5345504A (en) * | 1988-03-10 | 1994-09-06 | Scientific-Atlanta, Inc. | Differential compensation control for off-premises CATV system |
US5287539A (en) * | 1988-03-10 | 1994-02-15 | Scientific-Atlanta, Inc. | Interdiction program denial system for jamming audio and video signals |
US5289541A (en) * | 1988-03-10 | 1994-02-22 | Scientific-Atlanta, Inc. | Interdiction method and apparatus with constant blanking and variable dwell times |
US5463689A (en) * | 1988-03-10 | 1995-10-31 | Scientific-Atlanta | Interdiction method and apparatus with random mode jamming |
US5231660A (en) * | 1988-03-10 | 1993-07-27 | Scientific-Atlanta, Inc. | 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 |
EP0559802B1 (de) * | 1990-11-27 | 1999-06-30 | Blonder Tongue Laboratories, Inc. | Sperrsystemverfahren und -gerät für ein pro einschalten zu bezahlendes kabelfernsehprogramm |
US5255318A (en) * | 1991-03-22 | 1993-10-19 | North American Philips Corporation | Expandable cable television subscriber control system |
US5140633A (en) * | 1991-03-22 | 1992-08-18 | North American Philips Corporation | Cable subscriber control device using shared jamming modules |
US5243651A (en) * | 1992-06-10 | 1993-09-07 | Scientific-Atlanta, Inc. | Diagnostic method and apparatus for a cable television interdiction system |
US5278908A (en) * | 1992-06-10 | 1994-01-11 | Scientific-Atlanta, Inc. | Interdiction method and apparatus with programmable jamming effectiveness |
US5243647A (en) * | 1992-06-10 | 1993-09-07 | Scientific-Atlanta, Inc. | Method and apparatus for broadband signal distribution |
WO1993026127A1 (en) * | 1992-06-10 | 1993-12-23 | Scientific-Atlanta, Inc. | Interdiction method and apparatus with direct memory control of variable frequency elements |
US5604528A (en) * | 1992-06-10 | 1997-02-18 | Scientific-Atlanta, Inc. | Method and apparatus for providing periodic subscription television services |
US5265160A (en) * | 1992-06-10 | 1993-11-23 | Scientific-Atlanta, Inc. | Interdiction method and apparatus with pulsed mode jamming |
US5495408A (en) * | 1992-06-10 | 1996-02-27 | Rockwell International Corporation | Method and apparatus for signal tracking using feedback control loop |
WO1993026126A1 (en) * | 1992-06-10 | 1993-12-23 | Scientific-Atlanta, Inc. | Interdiction method and apparatus with frequency change inhibit function |
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 |
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 |
US5668946A (en) * | 1993-09-01 | 1997-09-16 | Zenith Electronics Corporation | System for cable communication wherein interpretively coded data transmitted from headend selectively initiate loop free instruction sets stored in receiver-decoder to affect the behavior thereof |
ES2099666B1 (es) * | 1994-04-28 | 1998-02-01 | Morilla Rodrigo C Martinez | Limitador de recepcion de programas de television. |
US5640452A (en) * | 1995-04-28 | 1997-06-17 | Trimble Navigation Limited | Location-sensitive decryption of an encrypted message |
US5790180A (en) * | 1995-12-28 | 1998-08-04 | At&T Corp. | Video telephone call handling system and method |
US6188870B1 (en) | 1996-10-07 | 2001-02-13 | General Instrument Corporation | Passive interdiction system for scrambling |
US6014547A (en) * | 1997-04-28 | 2000-01-11 | General Instrument Corporation | System for enhancing the performance of a CATV settop terminal |
US6144265A (en) * | 1997-11-26 | 2000-11-07 | Honeywell Inc. | Calibrated high power radio frequency step attenuator |
DE29820900U1 (de) | 1998-11-16 | 1999-04-15 | Klein, Patrick, 85716 Unterschleißheim | Elektronischer Bereichsbegrenzer oder Bereichsstörer für Hochfrequenzübertragungen in breitbandigen Übertragungsnetzen |
DE19956680C2 (de) * | 1999-11-25 | 2001-10-25 | Grundig Ag | Steuerbare Antennendose zum selektiven Empfang von über ein Antennenkabel übertragenen Rundfunksignalen |
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 |
US8156535B2 (en) * | 2002-02-12 | 2012-04-10 | Finsar Corporation | Data rate compression device for cable television return path using bandpass puncturing |
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 |
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 |
US7519078B2 (en) * | 2004-05-12 | 2009-04-14 | Finisar Corporation | Automated ethernet configuration of CATV network |
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 |
US8990881B2 (en) * | 2009-03-30 | 2015-03-24 | Ppc Broadband, Inc. | Upstream bandwidth conditioning device |
CN104620524B (zh) * | 2012-09-11 | 2018-02-16 | 英派尔科技开发有限公司 | 安全通信 |
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 |
Family Cites Families (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3202758A (en) * | 1961-11-09 | 1965-08-24 | Paramount Pictures Corp | Subscription-television programscrambling system |
US3899633A (en) * | 1972-05-12 | 1975-08-12 | Columbia Pictures Ind Inc | Subscription television system |
US3760097A (en) * | 1972-06-26 | 1973-09-18 | Hughes Aircraft Co | Adjacent catv channel jamming |
US3882266A (en) * | 1973-01-11 | 1975-05-06 | Oak Industries Inc | Apparatus for converting selected channels |
US4085422A (en) * | 1973-10-31 | 1978-04-18 | Hokuryo Denko Co., Ltd. | Fee-charging apparatus for television sets |
US3896262A (en) * | 1974-03-21 | 1975-07-22 | Hughes Aircraft Co | Subscription television jamming system |
US4039954A (en) * | 1975-05-27 | 1977-08-02 | Oak Holland B.V. | Signal distribution device for a cable television |
USRE29997E (en) * | 1974-12-24 | 1979-05-15 | Oak Holland, B.V. | Signal distribution device for a cable television |
GB1554411A (en) * | 1975-08-09 | 1979-10-17 | Communications Patents Ltd | Control systems |
US3989887A (en) * | 1975-08-28 | 1976-11-02 | Gte Laboratories Incorporated | Swept frequency trap jammer for secure television system |
US4074311A (en) * | 1976-06-18 | 1978-02-14 | Tanner Electronic Systems | Television security system |
US4097894A (en) * | 1976-11-01 | 1978-06-27 | Tanner Electronics Systems Technology, Inc. | Secured scramble decoder filter |
US4091413A (en) * | 1977-01-17 | 1978-05-23 | Herman Richard E | Security system for pay-TV channel |
US4148064A (en) * | 1978-01-09 | 1979-04-03 | Gte Sylvania Incorporated | Jamming circuit for television signals |
US4222067A (en) * | 1978-06-23 | 1980-09-09 | Stern Joseph L | Tamper-resistant television signal scrambling |
US4343042A (en) * | 1979-07-10 | 1982-08-03 | Cablebus Systems Corporation | Bi-directional data transmission and control system |
US4334322A (en) * | 1979-10-26 | 1982-06-08 | E-Systems, Inc. | Communication management system for providing antijam/privacy capabilities for voice radio communications |
US4326289A (en) * | 1980-02-28 | 1982-04-20 | Dickinson Robert V C | Expandable communication system |
US4317213A (en) * | 1980-05-09 | 1982-02-23 | Dilorenzo Mark | Television reception interfering apparatus |
US4342119A (en) * | 1980-08-27 | 1982-07-27 | The United States Of America As Represented By The Secretary Of The Air Force | Multi-tone jammer |
US4434436A (en) * | 1981-07-13 | 1984-02-28 | Bruce Merrill | Addressable premium channel obfuscation device for cable television systems |
US4450481A (en) * | 1981-08-25 | 1984-05-22 | E-Com Corporation | Tamper-resistant, expandable communications system |
JPS58221577A (ja) * | 1982-06-18 | 1983-12-23 | Yagi Antenna Co Ltd | Catv信号分配方式 |
NL8301943A (nl) * | 1982-07-01 | 1984-02-01 | Plessey Overseas | Zender. |
JPS5961384A (ja) * | 1982-09-30 | 1984-04-07 | Nec Home Electronics Ltd | Catvシステム用ジヤミング信号発生装置 |
US4521809A (en) * | 1982-12-29 | 1985-06-04 | North American Philips Corporation | Method and apparatus for controlling access to selected television programs |
US4636852A (en) * | 1984-01-26 | 1987-01-13 | Scientific-Atlanta, Inc. | Scrambling and descrambling of television signals for subscription TV |
JPS60245385A (ja) * | 1984-05-18 | 1985-12-05 | Pioneer Electronic Corp | Catvシステムにおける集中視聴制御方式 |
JPS60253388A (ja) * | 1984-05-30 | 1985-12-14 | 株式会社東芝 | ケ−ブルテレビジヨンシステムのデ−タ処理装置 |
US4684980A (en) * | 1984-05-31 | 1987-08-04 | American Television & Communications Corporation | System for controlling communications on a cable television network |
US4754426A (en) * | 1984-05-31 | 1988-06-28 | American Television & Communications Corporation | System for controlling communications on a cable television network |
US4710956A (en) * | 1984-05-31 | 1987-12-01 | American Television & Communications Corporation | Cable television system |
US4673976A (en) * | 1984-05-31 | 1987-06-16 | American Television & Communications Corporation | Cable television system data verification apparatus |
JPS6194480A (ja) * | 1984-10-15 | 1986-05-13 | Pioneer Electronic Corp | ジヤミング信号発生回路 |
US4682359A (en) * | 1984-10-15 | 1987-07-21 | Blonder-Tongue Laboratories, Inc. | Television picture and sound scrambler and method |
JPS61139176A (ja) * | 1984-12-10 | 1986-06-26 | Pioneer Electronic Corp | Catvの視聴制御装置 |
US4691353A (en) * | 1985-02-25 | 1987-09-01 | Scientific Atlanta, Inc. | Scrambling systems for CATV |
JPS61230487A (ja) * | 1985-04-04 | 1986-10-14 | Pioneer Electronic Corp | Catvシステムの特定チヤンネル妨害波混入方式 |
US4910791A (en) * | 1985-12-26 | 1990-03-20 | Am Communications, Inc. | Monitoring and control of data communications |
DE3618066C1 (de) * | 1986-05-29 | 1987-12-03 | Licentia Gmbh | Verfahren zum dichten Verschliessen eines becherfoermigen aus Metall gefertigten Gehaeuses eines elektrischen Bauelements mit einem Deckel aus Kunststoff |
US4837820A (en) * | 1986-10-17 | 1989-06-06 | Zenith Electronics Corporation | Hybrid CATV scrambling system |
US4825468A (en) * | 1986-10-24 | 1989-04-25 | Broadband Engineering, Inc. | Video noise jammer |
US4748667A (en) * | 1986-11-04 | 1988-05-31 | Scientific Atlanta | Jamming signal scrambling and descrambling systems for CATV |
US4825467A (en) * | 1986-11-25 | 1989-04-25 | International Telesystems, Inc. | Restricted access television transmission system |
US4841569A (en) * | 1987-12-30 | 1989-06-20 | General Instrument Corporation | Secure video distribution system |
EP0360778B1 (de) * | 1988-09-23 | 1996-04-24 | Electroline Equipment Inc | Fernsehsignalstörungsverfahren und -einrichtung |
US4914695A (en) * | 1988-11-03 | 1990-04-03 | General Instrument Corporation | Method and apparatus for frequency control of multiple oscillators using a single frequency-locked-loop |
-
1988
- 1988-12-05 US US07/279,619 patent/US5014309A/en not_active Expired - Lifetime
-
1989
- 1989-11-23 CA CA002003698A patent/CA2003698C/en not_active Expired - Fee Related
- 1989-12-04 EP EP90900676A patent/EP0446280B1/de not_active Expired - Lifetime
- 1989-12-04 MX MX018562A patent/MX165533B/es unknown
- 1989-12-04 JP JP50133290A patent/JP3162371B2/ja not_active Expired - Lifetime
- 1989-12-04 WO PCT/US1989/005357 patent/WO1990006656A1/en active IP Right Grant
- 1989-12-04 AT AT90900676T patent/ATE124591T1/de not_active IP Right Cessation
- 1989-12-04 AU AU48088/90A patent/AU4808890A/en not_active Abandoned
- 1989-12-04 ES ES90900676T patent/ES2076356T3/es not_active Expired - Lifetime
- 1989-12-04 DE DE68923294T patent/DE68923294T2/de not_active Expired - Lifetime
- 1989-12-05 CN CN89109167A patent/CN1028468C/zh not_active Expired - Lifetime
-
1990
- 1990-08-04 KR KR1019900701692A patent/KR0139106B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1046826A (zh) | 1990-11-07 |
KR910700590A (ko) | 1991-03-15 |
DE68923294T2 (de) | 1995-11-09 |
US5014309A (en) | 1991-05-07 |
WO1990006656A1 (en) | 1990-06-14 |
AU4808890A (en) | 1990-06-26 |
JP3162371B2 (ja) | 2001-04-25 |
EP0446280A1 (de) | 1991-09-18 |
CA2003698A1 (en) | 1990-06-05 |
DE68923294D1 (de) | 1995-08-03 |
EP0446280B1 (de) | 1995-06-28 |
ES2076356T3 (es) | 1995-11-01 |
CN1028468C (zh) | 1995-05-17 |
KR0139106B1 (ko) | 1998-05-15 |
CA2003698C (en) | 1995-10-03 |
MX165533B (es) | 1992-11-18 |
JPH04505078A (ja) | 1992-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |