ES2052247T3 - Sistema de television por canal de pago utilizando una tarjeta de memoria asociada con un descodificador. - Google Patents

Sistema de television por canal de pago utilizando una tarjeta de memoria asociada con un descodificador.

Info

Publication number
ES2052247T3
ES2052247T3 ES90902755T ES90902755T ES2052247T3 ES 2052247 T3 ES2052247 T3 ES 2052247T3 ES 90902755 T ES90902755 T ES 90902755T ES 90902755 T ES90902755 T ES 90902755T ES 2052247 T3 ES2052247 T3 ES 2052247T3
Authority
ES
Spain
Prior art keywords
code
codes
encrypted
entry
card
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
ES90902755T
Other languages
English (en)
Inventor
Andre Kudelski
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.)
Nagra Plus SA
Original Assignee
Nagra Plus SA
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 Nagra Plus SA filed Critical Nagra Plus SA
Application granted granted Critical
Publication of ES2052247T3 publication Critical patent/ES2052247T3/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
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)
  • Selective Calling Equipment (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Credit Cards Or The Like (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Storage Device Security (AREA)
  • Circuits Of Receivers In General (AREA)
  • Details Of Television Systems (AREA)

Abstract

SEGUN EL INVENTO, EN RELACION CON LA EMISION, UN GENERADOR DE NUMEROS (10) SUMINISTRA UN CODIGO ALEATORIO (XAL) QUE ES ENVIADO A LA ENTRADA DE UNA TARJETA PRINCIPAL (11) QUE CIFRA EL CODIGO SEGUN UNA CLAVE PREDETERMINADA (100), EL CODIGO ASI CIFRADO ES DIFUNDIDO CON LA SEÑAL VIDEO, UN PRIMER DISPOSITIVO (17) RECIBE EN ENTRADA, POR UNA PARTE, EL CODIGO ALEATORIO (XA) Y, POR OTRA, EL CODIGO CIFRADO POR LA TARJETA PRINCIPAL (11) Y EFECTUA UNA COMBINACION NUMERICA DETERMINADA POR ESTOS DOS CODIGOS, CONSTITUYENDO ESTA COMBINACION LA PALABRA DE INICIALIZACION DE UN GENERADOR PSEUDO-ALEATORIO (12) DESTINADO A SUMINISTRAR UNA TABLA DE CODIGOS DESTINADA A EFECTUAR LA INTERFERENCIA DE LA SEÑAL VIDEO. EN RELACION CON LA RECEPCION, EL CODIGO CIFRADO RECIBIDO ES DESCIFRADO POR UNA TARJETA CLIENTE (13), UN SEGUNDO DISPOSITIVO (18) RECIBE EN ENTRADA, POR UNA PARTE, EL CODIGO CIFRADO Y, POR OTRA, EL CODIGO DESCIFRADO (XA) POR LA TARJETA CLIENTE (13) Y EFECTUA UNA COMBINACION NUMERICA DE ESTOS DOS CODIGOS IDENTICA A LA DEL PRIMER DISPOSITIVO (17).
ES90902755T 1989-02-22 1990-02-21 Sistema de television por canal de pago utilizando una tarjeta de memoria asociada con un descodificador. Expired - Lifetime ES2052247T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8902472A FR2643529B1 (fr) 1989-02-22 1989-02-22 Systeme de television a peage utilisant une carte a memoire associee a un decodeur

Publications (1)

Publication Number Publication Date
ES2052247T3 true ES2052247T3 (es) 1994-07-01

Family

ID=9379123

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90902755T Expired - Lifetime ES2052247T3 (es) 1989-02-22 1990-02-21 Sistema de television por canal de pago utilizando una tarjeta de memoria asociada con un descodificador.

Country Status (18)

Country Link
US (1) US5134656A (es)
EP (1) EP0414846B1 (es)
JP (1) JP3020603B2 (es)
AT (1) ATE105661T1 (es)
AU (1) AU638230B2 (es)
BR (1) BR9005413A (es)
CA (1) CA2028248C (es)
DD (1) DD294151A5 (es)
DE (1) DE69008794T2 (es)
DK (1) DK0414846T3 (es)
ES (1) ES2052247T3 (es)
FR (1) FR2643529B1 (es)
GR (1) GR1000407B (es)
IL (1) IL93468A0 (es)
LU (1) LU87472A1 (es)
PT (1) PT93196B (es)
TR (1) TR24440A (es)
WO (1) WO1990010354A1 (es)

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FR2717028B1 (fr) * 1994-03-02 1996-04-12 Teleciel Installation de cryptage et de décryptage d'informations télévisées.
MY108367A (en) * 1991-09-30 1996-09-30 Thomson Consumer Electronics S A Method and apparatus for secure transmisson of video signals.
JPH06266670A (ja) * 1993-03-11 1994-09-22 Fujitsu Ltd 暗号化仮想端末初期化装置
FR2703552A1 (fr) * 1993-03-31 1994-10-07 Philips Electronics Nv Procédé et dispositif pour l'embrouillage et le désembrouillage d'une émission déterminée de télévision.
ES2100789B1 (es) * 1993-08-25 1998-02-16 Molinero Garcia Francisco J Transmision de datos de correccion gps mediante rds en la red comercial de fm.
JP3029381B2 (ja) * 1994-01-10 2000-04-04 富士通株式会社 データ変換装置
GB9407038D0 (en) * 1994-04-08 1994-06-01 Amstrad Plc Method and apparatus for transmitting and receiving encrypted signals
KR0152788B1 (ko) 1994-11-26 1998-10-15 이헌조 디지탈 영상 시스템의 복사 방지 방법 및 장치
KR0136458B1 (ko) 1994-12-08 1998-05-15 구자홍 디지탈 자기 기록재생 시스템의 복사 방지장치
US5742680A (en) * 1995-11-13 1998-04-21 E Star, Inc. Set top box for receiving and decryption and descrambling a plurality of satellite television signals
SE521773C2 (sv) 1998-11-20 2003-12-02 Ericsson Telefon Ab L M System och förfarande för att tillhandahålla distribuerad cashning av svarsobjekt inom ett paketdatanät.
US6449719B1 (en) * 1999-11-09 2002-09-10 Widevine Technologies, Inc. Process and streaming server for encrypting a data stream
US8055894B2 (en) 1999-11-09 2011-11-08 Google Inc. Process and streaming server for encrypting a data stream with bandwidth based variation
AU2000222758A1 (en) * 2000-02-09 2001-08-20 Swisscom Mobile Ag Decoder, decoding method and a chip card
US7165175B1 (en) 2000-09-06 2007-01-16 Widevine Technologies, Inc. Apparatus, system and method for selectively encrypting different portions of data sent over a network
US7043473B1 (en) 2000-11-22 2006-05-09 Widevine Technologies, Inc. Media tracking system and method
US7150045B2 (en) * 2000-12-14 2006-12-12 Widevine Technologies, Inc. Method and apparatus for protection of electronic media
US20020146125A1 (en) * 2001-03-14 2002-10-10 Ahmet Eskicioglu CA system for broadcast DTV using multiple keys for different service providers and service areas
US8098820B2 (en) * 2001-03-14 2012-01-17 Thomson Licensing Conditional access system for broadcast digital television
US7822679B1 (en) * 2001-10-29 2010-10-26 Visa U.S.A. Inc. Method and system for conducting a commercial transaction between a buyer and a seller
US7328345B2 (en) * 2002-01-29 2008-02-05 Widevine Technologies, Inc. Method and system for end to end securing of content for video on demand
US7299292B2 (en) * 2002-03-29 2007-11-20 Widevine Technologies, Inc. Process and streaming server for encrypting a data stream to a virtual smart card client system
US6798353B2 (en) * 2002-04-24 2004-09-28 Itron Electricity Metering, Inc. Method of using flash memory for storing metering data
US7594271B2 (en) * 2002-09-20 2009-09-22 Widevine Technologies, Inc. Method and system for real-time tamper evidence gathering for software
US7356143B2 (en) * 2003-03-18 2008-04-08 Widevine Technologies, Inc System, method, and apparatus for securely providing content viewable on a secure device
US7007170B2 (en) * 2003-03-18 2006-02-28 Widevine Technologies, Inc. System, method, and apparatus for securely providing content viewable on a secure device
US20040199771A1 (en) * 2003-04-04 2004-10-07 Widevine Technologies, Inc. Method for tracing a security breach in highly distributed content
US7406174B2 (en) * 2003-10-21 2008-07-29 Widevine Technologies, Inc. System and method for n-dimensional encryption
US8606697B2 (en) 2004-06-17 2013-12-10 Visa International Service Association Method and system for providing buyer bank payable discounting services
US9609279B2 (en) * 2004-09-24 2017-03-28 Google Inc. Method and system for providing secure CODECS
US7711639B2 (en) 2005-01-12 2010-05-04 Visa International Pre-funding system and method
US20080015999A1 (en) * 2005-02-04 2008-01-17 Widevine Technologies, Inc. Securely ingesting encrypted content into content servers
US20070067643A1 (en) * 2005-09-21 2007-03-22 Widevine Technologies, Inc. System and method for software tamper detection
US7817608B2 (en) * 2005-09-23 2010-10-19 Widevine Technologies, Inc. Transitioning to secure IP communications for encoding, encapsulating, and encrypting data
WO2007038245A2 (en) 2005-09-23 2007-04-05 Widevine Technologies, Inc. Method for evolving detectors to detect malign behavior in an artificial immune system
US8065733B2 (en) * 2005-09-23 2011-11-22 Google, Inc. Method for evolving detectors to detect malign behavior in an artificial immune system
US8689016B2 (en) 2005-12-02 2014-04-01 Google Inc. Tamper prevention and detection for video provided over a network to a client
US8526612B2 (en) * 2006-01-06 2013-09-03 Google Inc. Selective and persistent application level encryption for video provided to a client
US20070180231A1 (en) * 2006-01-31 2007-08-02 Widevine Technologies, Inc. Preventing entitlement management message (EMM) filter attacks
US8621093B2 (en) 2007-05-21 2013-12-31 Google Inc. Non-blocking of head end initiated revocation and delivery of entitlements non-addressable digital media network
US8243924B2 (en) 2007-06-29 2012-08-14 Google Inc. Progressive download or streaming of digital media securely through a localized container and communication protocol proxy
US8868464B2 (en) 2008-02-07 2014-10-21 Google Inc. Preventing unauthorized modification or skipping of viewing of advertisements within content
US8751800B1 (en) 2011-12-12 2014-06-10 Google Inc. DRM provider interoperability

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459595A1 (fr) * 1979-06-15 1981-01-09 Telediffusion Fse Systeme de television a controle d'acces utilisant une cle electronique variable
US4369434A (en) * 1979-12-20 1983-01-18 Gretag Aktiengesellschaft Enciphering/deciphering system
US4484027A (en) * 1981-11-19 1984-11-20 Communications Satellite Corporation Security system for SSTV encryption
CA1253616A (en) * 1982-07-29 1989-05-02 Robert W. Field Secure coding and decoding system and method for television program signals
EP0171408B1 (en) * 1984-02-06 1990-06-13 British Broadcasting Corporation Pseudo-random binary sequence generators
JPS6120442A (ja) * 1984-07-09 1986-01-29 Toshiba Corp 有料放送方式
US4736419A (en) * 1984-12-24 1988-04-05 American Telephone And Telegraph Company, At&T Bell Laboratories Electronic lock system
NL8602847A (nl) * 1986-11-11 1988-06-01 Philips Nv Werkwijze voor het vercijferen/ontcijferen en inrichting voor het uitvoeren van de werkwijze.
US4771458A (en) * 1987-03-12 1988-09-13 Zenith Electronics Corporation Secure data packet transmission system and method
US5016275A (en) * 1988-10-28 1991-05-14 International Business Machines Corporation Buffered encryption/decryption

Also Published As

Publication number Publication date
GR900100124A (en) 1991-06-28
ATE105661T1 (de) 1994-05-15
CA2028248C (fr) 2001-02-13
US5134656A (en) 1992-07-28
AU5042090A (en) 1990-09-26
EP0414846B1 (fr) 1994-05-11
DE69008794T2 (de) 1994-11-24
EP0414846A1 (fr) 1991-03-06
TR24440A (tr) 1991-11-01
JPH03504188A (ja) 1991-09-12
BR9005413A (pt) 1991-08-06
WO1990010354A1 (fr) 1990-09-07
JP3020603B2 (ja) 2000-03-15
DD294151A5 (de) 1991-09-19
LU87472A1 (fr) 1989-08-30
DE69008794D1 (de) 1994-06-16
IL93468A0 (en) 1990-11-29
PT93196A (pt) 1991-10-15
FR2643529B1 (fr) 1991-06-07
GR1000407B (el) 1992-06-30
AU638230B2 (en) 1993-06-24
FR2643529A1 (fr) 1990-08-24
PT93196B (pt) 1996-01-31
CA2028248A1 (fr) 1991-08-22
DK0414846T3 (da) 1995-03-27

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