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ES2142408T3 - Metodo y aparato para la transmision y recepcion de señales codificadas o encriptadas. - Google Patents

Metodo y aparato para la transmision y recepcion de señales codificadas o encriptadas.

Info

Publication number
ES2142408T3
ES2142408T3 ES94927743T ES94927743T ES2142408T3 ES 2142408 T3 ES2142408 T3 ES 2142408T3 ES 94927743 T ES94927743 T ES 94927743T ES 94927743 T ES94927743 T ES 94927743T ES 2142408 T3 ES2142408 T3 ES 2142408T3
Authority
ES
Spain
Prior art keywords
signal
encryption
encrypted
coded
reception
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
ES94927743T
Other languages
English (en)
Inventor
Donald Watts Davies
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.)
Mindport BV
Original Assignee
Mindport 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.)
Filing date
Publication date
Application filed by Mindport BV filed Critical Mindport BV
Application granted granted Critical
Publication of ES2142408T3 publication Critical patent/ES2142408T3/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
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • 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
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

UNA SEÑAL ENCRIPTADA COMPATIBLE CON UN PRIMER Y SEGUNDO SISTEMA DE ENCRIPTACION SE GENERA PARA PRODUCIR SEÑALES DE DATOS ENCRIPTADOS RELACIONADOS CON CADA SISTEMA DE ENCRIPTACION. UNA SEÑAL DIFERENCIAL SE DERIVA DESDE LAS DOS SEÑALES DE DATOS DE ENCRIPTACION, Y LA SEÑAL QUE SE VA A ENCRIPTAR SE ENCRIPTA DE ACUERDO CON UNO DE LOS SISTEMAS DE ENCRIPTACION. EN UNA SALIDA LA SEÑAL ENCRIPTADA, LAS DOS SEÑALES DE ENCRIPTACION, Y LA SEÑAL DIFERENCIAL QUEDAN DISPONIBLES. EN UN DESCODIFICADOR COMPATIBLE CON EL PRIMER SISTEMA DE ENCRIPTACION, SE RECIBEN LOS DATOS ENCRIPTADOS DE LA SEGUNDA SEÑAL DE DATOS DE ENCRIPTACION, Y LA SEÑAL DIFERENTE. EL DESCODIFICADOR PUEDE ENTONCES DERIVAR LA PRIMERA SEÑAL DE DATOS DE ENCRIPTACION DESDE LA SEGUNDA SEÑAL DE ENCRIPTACION Y LA SEÑAL DIFERENCIAL, Y PUEDE ENTONCES DESCODIFICAR LA SEÑAL ENCRIPTADA.
ES94927743T 1994-04-08 1994-09-29 Metodo y aparato para la transmision y recepcion de señales codificadas o encriptadas. Expired - Lifetime ES2142408T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9407038A GB9407038D0 (en) 1994-04-08 1994-04-08 Method and apparatus for transmitting and receiving encrypted signals

Publications (1)

Publication Number Publication Date
ES2142408T3 true ES2142408T3 (es) 2000-04-16

Family

ID=10753276

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94927743T Expired - Lifetime ES2142408T3 (es) 1994-04-08 1994-09-29 Metodo y aparato para la transmision y recepcion de señales codificadas o encriptadas.

Country Status (18)

Country Link
US (1) US5920625A (es)
EP (1) EP0754390B1 (es)
AU (1) AU7704394A (es)
CA (1) CA2187313C (es)
CZ (1) CZ288958B6 (es)
DE (1) DE69422199T2 (es)
DK (1) DK0754390T3 (es)
ES (1) ES2142408T3 (es)
FI (1) FI964035L (es)
GB (1) GB9407038D0 (es)
GR (1) GR3032731T3 (es)
HU (1) HUT76459A (es)
NO (1) NO964260L (es)
NZ (1) NZ273662A (es)
PL (1) PL176058B1 (es)
PT (1) PT754390E (es)
SK (1) SK128596A3 (es)
WO (1) WO1995028057A1 (es)

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US6495561B2 (en) 1999-10-29 2002-12-17 Merck & Co., Inc. 2-cyclohexyl imidazopyridine NMDA/NR2B antagonists
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US6316474B1 (en) 1999-10-29 2001-11-13 Merck & Co., Inc. 2-benzyl and 2-heteroaryl benzimidazole NMDA/NR2B antagonists
US6380205B1 (en) 1999-10-29 2002-04-30 Merck & Co., Inc. 2-cyclohexyl quinazoline NMDA/NR2B antagonists
US6489477B1 (en) 1999-10-29 2002-12-03 Merck & Co., Inc. 2-aza-bicyclo[2.2.2]octane NMDA/NR2B antigonists
US6291499B1 (en) 1999-10-29 2001-09-18 Merck & Co., Inc. 2-cyclohexyl benzimidazole NMDA/NR2B antagonists
US6369076B1 (en) 1999-10-29 2002-04-09 Merck & Co. Inc. 5-benzyl-octahydroindole and 6-benzyl-decahydroquinoline NMDA/NR2B antagonists
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
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
US6687733B2 (en) 2001-06-01 2004-02-03 Intergenix Method and system for automatically configuring a client-server network
US7139398B2 (en) 2001-06-06 2006-11-21 Sony Corporation Time division partial encryption
US7895616B2 (en) 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
US8290160B1 (en) 2001-10-17 2012-10-16 Appalachian Technologies Corporation of Pennsylvania Method and apparatus for secured facsimile transmission
US7292690B2 (en) 2002-01-02 2007-11-06 Sony Corporation Video scene change detection
US8027470B2 (en) 2002-01-02 2011-09-27 Sony Corporation Video slice and active region based multiple partial encryption
US7376233B2 (en) 2002-01-02 2008-05-20 Sony Corporation Video slice and active region based multiple partial encryption
US7765567B2 (en) * 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
US7823174B2 (en) 2002-01-02 2010-10-26 Sony Corporation Macro-block based content replacement by PID mapping
US8051443B2 (en) * 2002-01-02 2011-11-01 Sony Corporation Content replacement by PID mapping
US7155012B2 (en) * 2002-01-02 2006-12-26 Sony Corporation Slice mask and moat pattern partial encryption
US7302059B2 (en) 2002-01-02 2007-11-27 Sony Corporation Star pattern partial encryption
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
US8818896B2 (en) 2002-09-09 2014-08-26 Sony Corporation Selective encryption with coverage encryption
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
JP3735670B2 (ja) * 2003-03-19 2006-01-18 独立行政法人情報通信研究機構 乱数列生成装置、暗号化復号化装置、乱数列生成方法、暗号化復号化方法、ならびに、プログラム
US7292692B2 (en) 2003-03-25 2007-11-06 Sony Corporation Content scrambling with minimal impact on legacy devices
US20040199771A1 (en) * 2003-04-04 2004-10-07 Widevine Technologies, Inc. Method for tracing a security breach in highly distributed content
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US7406174B2 (en) * 2003-10-21 2008-07-29 Widevine Technologies, Inc. System and method for n-dimensional encryption
US7853980B2 (en) 2003-10-31 2010-12-14 Sony Corporation Bi-directional indices for trick mode video-on-demand
US9609279B2 (en) 2004-09-24 2017-03-28 Google Inc. Method and system for providing secure CODECS
US7895617B2 (en) 2004-12-15 2011-02-22 Sony Corporation Content substitution editor
US8041190B2 (en) * 2004-12-15 2011-10-18 Sony Corporation System and method for the creation, synchronization and delivery of alternate content
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
US8065733B2 (en) * 2005-09-23 2011-11-22 Google, Inc. Method for evolving detectors to detect malign behavior in an artificial immune system
WO2007038245A2 (en) 2005-09-23 2007-04-05 Widevine Technologies, Inc. Method for evolving detectors to detect malign behavior in an artificial immune system
US7817608B2 (en) * 2005-09-23 2010-10-19 Widevine Technologies, Inc. Transitioning to secure IP communications for encoding, encapsulating, and encrypting data
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
US7555464B2 (en) * 2006-03-01 2009-06-30 Sony Corporation Multiple DRM management
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
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MY108367A (en) * 1991-09-30 1996-09-30 Thomson Consumer Electronics S A Method and apparatus for secure transmisson of video signals.
EP0570785B1 (en) * 1992-05-19 1997-10-01 THOMSON multimedia Method and apparatus for device control by data transmission in TV lines

Also Published As

Publication number Publication date
DE69422199D1 (de) 2000-01-20
EP0754390B1 (en) 1999-12-15
AU7704394A (en) 1995-10-30
HU9602760D0 (en) 1996-11-28
SK128596A3 (en) 1998-02-04
WO1995028057A1 (en) 1995-10-19
CZ288958B6 (cs) 2001-10-17
FI964035A0 (fi) 1996-10-08
PL316673A1 (en) 1997-02-03
GB9407038D0 (en) 1994-06-01
CA2187313C (en) 2007-07-31
NO964260D0 (no) 1996-10-07
DE69422199T2 (de) 2002-07-25
CZ9602937A3 (en) 2001-05-16
US5920625A (en) 1999-07-06
HUT76459A (en) 1997-09-29
PT754390E (pt) 2000-04-28
NO964260L (no) 1996-12-09
EP0754390A1 (en) 1997-01-22
CA2187313A1 (en) 1995-10-19
FI964035L (fi) 1996-12-05
GR3032731T3 (en) 2000-06-30
DK0754390T3 (da) 2000-05-29
PL176058B1 (pl) 1999-03-31
NZ273662A (en) 1998-05-27

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