ES2029841T3 - Sistema de seguridad de transmision de senales de television. - Google Patents

Sistema de seguridad de transmision de senales de television.

Info

Publication number
ES2029841T3
ES2029841T3 ES198787310421T ES87310421T ES2029841T3 ES 2029841 T3 ES2029841 T3 ES 2029841T3 ES 198787310421 T ES198787310421 T ES 198787310421T ES 87310421 T ES87310421 T ES 87310421T ES 2029841 T3 ES2029841 T3 ES 2029841T3
Authority
ES
Spain
Prior art keywords
interfering
filters
television signal
carrier
carriers
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
ES198787310421T
Other languages
English (en)
Inventor
Bruno A. Rist
Adrian J. Dr Devries
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.)
INTERNATIONAL TELESYSTEMS Inc
Original Assignee
INTERNATIONAL TELESYSTEMS 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 INTERNATIONAL TELESYSTEMS Inc filed Critical INTERNATIONAL TELESYSTEMS Inc
Application granted granted Critical
Publication of ES2029841T3 publication Critical patent/ES2029841T3/es
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
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Transmitters (AREA)
  • Details Of Television Systems (AREA)
  • Television Systems (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Noise Elimination (AREA)

Abstract

EL INVENTO CONSISTE EN UN SISTEMA DE SEGURIDAD DE TRANSMISION DE SEÑAL DE TELEVISION QUE PROPORCIONA UN MAYOR GRADO DE SEGURIDAD AL POSIBLE ANTERIORMENTE, UTILIZANDO TECNOLOGIA DE CODIFICACION Y DE DECODIFICACION QUE IMPIDE LA COPIA. LA SEÑAL DE TELEVISION TRANSMITIDA SE CODIFICA INTRODUCIENDO UNO O MAS PORTADORES DE INTERFERENCIA (24,26) EN ESPECIFICOS INTERVALOS DE FRECUENCIA PROXIMOS AL PORTADOR VIDEO (10). LOS PORTADORES (24,26) PUEDEN INTRODUCIRSE POR ENCIMA O POR DEBAJO DEL PORTADOR VIDEO (10), ENTRE ARMONICAS (41-44) DE LAS FRECUENCIAS HORIZONTALES. COMBINACIONES DE LOS PORTADORES DE INTERFERENCIA (24,26) PROPORCIONAN TECNICAS DE CODIFICACION, HACIENDO EL SISTEMA VIRTUALMENTE INMUNE A LA COPIA. EL PORTADOR DE INTERFERENCIA (24,26) SE ELIMINA POR FILTROS DE RECHAZO DE BANDA MUY ESTRECHA (100-113) CON UNA ATENUACION DE BANDA DE RECHAZO MAYOR DE 40DB EN ANCHOS DE BANDA DE HASTA 4000HZ Y UN ANCHO DE BANDA DE 3DB DE APROXIMADAMENTE 5KHZ. LOS FILTROS (100-113) ESTAN HECHOS UTILIZANDOTECNOLOGIA AVANZADA PARA OBTENER LOS RESONADORES VOLUMETRICOS DE CRISTAL DE CUARZO O LOS FILTROS SUPERFICIALES DE ONDA ACUSTICA. LA PRECOMPENSACION EN EL TRANSMISOR MEJORA LA AMPLITUD Y LA RESPUESTA DE FASE, PROPORCIONANDO UNA IMAGEN DECODIFICADA CASI PERFECTA.
ES198787310421T 1986-11-25 1987-11-25 Sistema de seguridad de transmision de senales de television. Expired - Lifetime ES2029841T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/934,810 US4825467A (en) 1986-11-25 1986-11-25 Restricted access television transmission system

Publications (1)

Publication Number Publication Date
ES2029841T3 true ES2029841T3 (es) 1992-10-01

Family

ID=25466097

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198787310421T Expired - Lifetime ES2029841T3 (es) 1986-11-25 1987-11-25 Sistema de seguridad de transmision de senales de television.

Country Status (10)

Country Link
US (2) US4825467A (es)
EP (1) EP0269437B1 (es)
JP (1) JP2720948B2 (es)
KR (1) KR960002704B1 (es)
AT (1) ATE72370T1 (es)
AU (1) AU602543B2 (es)
CA (1) CA1276288C (es)
DE (1) DE3776509D1 (es)
ES (1) ES2029841T3 (es)
GB (1) GB2198617A (es)

Families Citing this family (30)

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US4825467A (en) * 1986-11-25 1989-04-25 International Telesystems, Inc. Restricted access television transmission system
US5289541A (en) * 1988-03-10 1994-02-22 Scientific-Atlanta, Inc. Interdiction method and apparatus with constant blanking and variable dwell times
US5323462A (en) * 1988-03-10 1994-06-21 Scientific-Atlanta, Inc. CATV subscriber disconnect switch
US5142574A (en) * 1988-03-10 1992-08-25 West Jr Lamar Optimum amplitude and frequency of jamming carrier in interdiction program denial system
US5463689A (en) * 1988-03-10 1995-10-31 Scientific-Atlanta Interdiction method and apparatus with random mode jamming
US5014309A (en) * 1988-03-10 1991-05-07 Scientific-Atlanta, Inc. Off-premises cable television channel interdiction method and apparatus
US5287539A (en) * 1988-03-10 1994-02-15 Scientific-Atlanta, Inc. Interdiction program denial system for jamming audio and video signals
US5303295A (en) * 1988-03-10 1994-04-12 Scientific-Atlanta, Inc. Enhanced versatility of a program control by a combination of technologies
US5208854A (en) * 1988-03-10 1993-05-04 Scientific-Atlanta, Inc. Picture carrier controlled automatic gain control circuit for cable television interdiction or jamming apparatus
SE8803814A0 (sv) * 1988-10-25 1990-04-26 Spacenet Ab Anordning vid betal-TV-system
JPH04245063A (ja) * 1991-01-31 1992-09-01 Sony Corp 複製防止用の信号合成回路並びに検出回路
US5581614A (en) * 1991-08-19 1996-12-03 Index Systems, Inc. Method for encrypting and embedding information in a video program
US5278908A (en) * 1992-06-10 1994-01-11 Scientific-Atlanta, Inc. Interdiction method and apparatus with programmable jamming effectiveness
WO1993026127A1 (en) * 1992-06-10 1993-12-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with direct memory control of variable frequency elements
US5317635A (en) * 1992-06-10 1994-05-31 Scientific-Atlanta, Inc. Interdiction method and apparatus with mode control for variable frequency elements
US5265160A (en) * 1992-06-10 1993-11-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with pulsed mode jamming
WO1993026126A1 (en) * 1992-06-10 1993-12-23 Scientific-Atlanta, Inc. Interdiction method and apparatus with frequency change inhibit function
US5523794A (en) * 1993-04-16 1996-06-04 Mankovitz; Roy J. Method and apparatus for portable storage and use of data transmitted by television signal
US6269241B1 (en) * 1997-11-26 2001-07-31 Aerocomm, Inc. Ultra-Q filter
US6081599A (en) * 1997-12-01 2000-06-27 Tresness Irrevocable Patent Trust Saw television scrambling system
JP2004129238A (ja) * 2002-09-10 2004-04-22 Matsushita Electric Ind Co Ltd 帯域阻止型フィルタ、フィルタ装置、アンテナ共用器、通信機器
CN101084623B (zh) * 2004-10-29 2012-02-01 北电网络有限公司 带阻滤波器
WO2008054385A1 (en) * 2006-11-01 2008-05-08 Thomson Licensing A co-channel interference remover
WO2008054392A1 (en) * 2006-11-01 2008-05-08 Thomson Licensing A co-channel interference detector
US8457175B2 (en) * 2008-01-29 2013-06-04 Sony Corporation Systems and methods for securing a digital communications link
US8792640B2 (en) 2008-01-29 2014-07-29 Sony Corporation Systems and methods for securing a digital communications link
US20180308661A1 (en) 2017-04-24 2018-10-25 Applied Materials, Inc. Plasma reactor with electrode filaments
US11355321B2 (en) 2017-06-22 2022-06-07 Applied Materials, Inc. Plasma reactor with electrode assembly for moving substrate
US11114284B2 (en) 2017-06-22 2021-09-07 Applied Materials, Inc. Plasma reactor with electrode array in ceiling
US10510515B2 (en) 2017-06-22 2019-12-17 Applied Materials, Inc. Processing tool with electrically switched electrode assembly

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US3009120A (en) * 1961-11-14 Electric
US3179906A (en) * 1965-04-20 By-pass netwoems when
BE517017A (es) * 1952-01-21
US2905747A (en) * 1953-09-22 1959-09-22 Rca Corp Secrecy systems
US3202758A (en) * 1961-11-09 1965-08-24 Paramount Pictures Corp Subscription-television programscrambling system
GB1041405A (en) * 1963-04-16 1966-09-07 R & R Res Ltd Improvements in or relating to television systems
US3568102A (en) * 1967-07-06 1971-03-02 Litton Precision Prod Inc Split surface wave acoustic delay line
US3599124A (en) * 1968-04-24 1971-08-10 Bell Telephone Labor Inc Crystal filters
BE756674R (fr) * 1969-09-22 1971-03-01 Siemens Ag Reseau d'aiguillage, constitue par un filtre
BE758421A (fr) * 1969-11-06 1971-05-04 Automatic Elect Lab Filtre passe-bande a cristal polylithique, presentant des frequences polaires d'attenuation dans la bande d'arret inferieure
US3613032A (en) * 1970-03-19 1971-10-12 Hughes Aircraft Co Composite crystal filter circuit
DE2115412A1 (de) * 1971-03-30 1972-10-12 Siemens Ag Piezoelektrisches Filter nach dem Oberfl ächenwellenprinzip
FR2146541A5 (es) * 1971-07-16 1973-03-02 Thomson Csf
US3736369A (en) * 1972-03-13 1973-05-29 Theatre Vision Inc Technique for encoding and decoding scrambled t.v. transmissions by the simultaneous transmission of the encoding and decoding signals
US3846723A (en) * 1973-06-22 1974-11-05 Us Navy Surface wave narrow bandpass filter
US3896262A (en) * 1974-03-21 1975-07-22 Hughes Aircraft Co Subscription television jamming system
US4126837A (en) * 1974-07-01 1978-11-21 Nippon Telegraph And Telephone Public Corporation Impedance element and band-rejection filter using the same
US4048594A (en) * 1976-01-02 1977-09-13 Hughes Aircraft Company Surface acoustic wave filter
US4017813A (en) * 1976-04-05 1977-04-12 Hughes Aircraft Company Surface acoustic wave notch filter
US4060777A (en) * 1976-05-19 1977-11-29 Piezo Technology Inc. Guided elastic surface wave filter
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
JPS5931890B2 (ja) * 1976-12-08 1984-08-04 株式会社日立製作所 弾性表面波フイルタ
US4099203A (en) * 1977-01-05 1978-07-04 Joseph Garodnick Television signal scrambling with introduction of replacement program signals
US4091413A (en) * 1977-01-17 1978-05-23 Herman Richard E Security system for pay-TV channel
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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
GB2070379B (en) * 1980-02-21 1984-05-16 Philips Electronic Associated Acoustic wave bandpass electrical filters
US4403252A (en) * 1980-05-27 1983-09-06 R F Monolithics, Inc. Television scrambling and unscrambling method and apparatus
GB2086684B (en) * 1980-10-08 1984-05-10 Philips Electronic Associated Surface acoustic wave filters
US4336515A (en) * 1980-10-10 1982-06-22 Zenith Radio Corporation Acoustic filter with harmonic rejection
US4409569A (en) * 1981-11-02 1983-10-11 Opt Industries, Inc. Filter circuits having transformers as filter elements
DE3213436A1 (de) * 1982-04-10 1983-10-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Bandfilter
JPS5925874U (ja) * 1982-08-10 1984-02-17 クラリオン株式会社 有料テレビジヨン信号解読器
US4623918A (en) * 1983-05-02 1986-11-18 Teleglobe Pay-Tv System, Inc. Pay television system utilizing multi-frequency passive filters
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

Also Published As

Publication number Publication date
KR880006936A (ko) 1988-07-25
ATE72370T1 (de) 1992-02-15
EP0269437A3 (en) 1989-05-24
CA1276288C (en) 1990-11-13
GB8720100D0 (en) 1987-09-30
JP2720948B2 (ja) 1998-03-04
EP0269437B1 (en) 1992-01-29
DE3776509D1 (de) 1992-03-12
US4903297A (en) 1990-02-20
US4825467A (en) 1989-04-25
KR960002704B1 (ko) 1996-02-24
AU602543B2 (en) 1990-10-18
GB2198617A (en) 1988-06-15
EP0269437A2 (en) 1988-06-01
AU8164587A (en) 1988-05-26
JPS63211885A (ja) 1988-09-02

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