FR2771581B1 - Procede d'embrouillage et procede de desembrouillage de donnees video numeriques et dispositifs mettant en oeuvre les procedes - Google Patents

Procede d'embrouillage et procede de desembrouillage de donnees video numeriques et dispositifs mettant en oeuvre les procedes

Info

Publication number
FR2771581B1
FR2771581B1 FR9714844A FR9714844A FR2771581B1 FR 2771581 B1 FR2771581 B1 FR 2771581B1 FR 9714844 A FR9714844 A FR 9714844A FR 9714844 A FR9714844 A FR 9714844A FR 2771581 B1 FR2771581 B1 FR 2771581B1
Authority
FR
France
Prior art keywords
scaling method
methods
video data
digital video
devices implementing
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 - Fee Related
Application number
FR9714844A
Other languages
English (en)
French (fr)
Other versions
FR2771581A1 (fr
Inventor
Veronique Pla
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.)
Vantiva SA
Original Assignee
Thomson Multimedia 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 Thomson Multimedia SA filed Critical Thomson Multimedia SA
Priority to FR9714844A priority Critical patent/FR2771581B1/fr
Priority to EP98402647A priority patent/EP0920209A1/en
Priority to US09/197,152 priority patent/US6459794B1/en
Priority to JP10334079A priority patent/JPH11225323A/ja
Priority to CNB981226000A priority patent/CN1169367C/zh
Publication of FR2771581A1 publication Critical patent/FR2771581A1/fr
Application granted granted Critical
Publication of FR2771581B1 publication Critical patent/FR2771581B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
FR9714844A 1997-11-26 1997-11-26 Procede d'embrouillage et procede de desembrouillage de donnees video numeriques et dispositifs mettant en oeuvre les procedes Expired - Fee Related FR2771581B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR9714844A FR2771581B1 (fr) 1997-11-26 1997-11-26 Procede d'embrouillage et procede de desembrouillage de donnees video numeriques et dispositifs mettant en oeuvre les procedes
EP98402647A EP0920209A1 (en) 1997-11-26 1998-10-23 Method and device for scrambling digital video data
US09/197,152 US6459794B1 (en) 1997-11-26 1998-11-20 Process for scrambling and process for descrambling digital video data and devices implementing the processes
JP10334079A JPH11225323A (ja) 1997-11-26 1998-11-25 ディジタルビデオデータをスクランブルする方法及びスクランブル解除する方法及びこれらの方法を実施する装置
CNB981226000A CN1169367C (zh) 1997-11-26 1998-11-25 加扰和解扰数字视频数据的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9714844A FR2771581B1 (fr) 1997-11-26 1997-11-26 Procede d'embrouillage et procede de desembrouillage de donnees video numeriques et dispositifs mettant en oeuvre les procedes

Publications (2)

Publication Number Publication Date
FR2771581A1 FR2771581A1 (fr) 1999-05-28
FR2771581B1 true FR2771581B1 (fr) 1999-12-17

Family

ID=9513803

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9714844A Expired - Fee Related FR2771581B1 (fr) 1997-11-26 1997-11-26 Procede d'embrouillage et procede de desembrouillage de donnees video numeriques et dispositifs mettant en oeuvre les procedes

Country Status (5)

Country Link
US (1) US6459794B1 (https=)
EP (1) EP0920209A1 (https=)
JP (1) JPH11225323A (https=)
CN (1) CN1169367C (https=)
FR (1) FR2771581B1 (https=)

Families Citing this family (26)

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Publication number Priority date Publication date Assignee Title
DE19907964C1 (de) * 1999-02-24 2000-08-10 Fraunhofer Ges Forschung Vorrichtung und Verfahren zum Erzeugen eines verschlüsselten Datenstroms und Vorrichtung und Verfahren zum Erzeugen eines entschlüsselten Audio- und/oder Videosignals
JP2001045265A (ja) * 1999-07-30 2001-02-16 Olympus Optical Co Ltd 画像信号処理装置
DE10138650A1 (de) * 2001-08-07 2003-02-27 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Verschlüsseln eines diskreten Signals sowie Verfahren und Vorrichtung zur Entschlüsselung
FR2832280B1 (fr) * 2001-11-13 2004-04-02 France Telecom Procede de fourniture d'images fixes ou animees avec controle d'acces
FR2835386B1 (fr) * 2002-01-31 2004-05-28 Daniel Lecomte Dispositif pour la diffusion securisee, l'acces conditionnel, la visualisation controlee, la copie privee et la gestion des droits de contenus audiovisuels de type mpeg-4
US9038096B2 (en) 2002-10-03 2015-05-19 Nagra France Sas System and method of adaptive and progressive descrambling of digital image content
FR2845556B1 (fr) * 2002-10-03 2005-02-11 Medialive Embrouillage adaptatif et progressif de flux video
US8695029B2 (en) * 2002-10-03 2014-04-08 Nagra France System and method of adaptive and progressive descrambling of streaming video
FR2845553B1 (fr) * 2002-10-03 2009-10-23 Medialive Desembrouillage adaptatif et progressif de flux video
FR2846178B1 (fr) * 2002-10-21 2005-03-11 Medialive Desembrouillage adaptatif et progressif de flux audio
FR2846179B1 (fr) 2002-10-21 2005-02-04 Medialive Embrouillage adaptatif et progressif de flux audio
KR100501933B1 (ko) 2002-11-21 2005-07-18 삼성전자주식회사 멀티미디어 데이터 암호화 압축방법 및 장치
FR2849567B1 (fr) * 2002-12-31 2005-04-01 Medialive Dispositif securise pour la diffusion, l'acces, la copie, l'enregistrement, la visualisation a la demande et la gestion des droits des images photographiques de type jpeg
FR2849565B1 (fr) * 2002-12-31 2005-06-03 Medialive Protection adaptative et progressive d'images fixes codees en ondelettes
US7801820B2 (en) * 2003-01-13 2010-09-21 Sony Corporation Real-time delivery of license for previously stored encrypted content
FR2850514B1 (fr) * 2003-01-23 2005-05-06 Medialive Desembrouillage adaptatif et progressif d'images fixes codees en ondelettes
FR2850515B1 (fr) 2003-01-23 2005-07-01 Medialive Procede et systeme adaptatif et progressif de distribution securisee d'images fixes codees en ondelettes
FR2851112B1 (fr) 2003-02-07 2005-06-03 Medialive Dispositif securise pour la diffusion, l'enregistrement et la visualisation a la demande des oeuvres audiovisuelles au format de type mpeg-2ts
FR2853786B1 (fr) * 2003-04-11 2005-08-05 Medialive Procede et equipement de distribution de produits videos numeriques avec une restriction de certains au moins des droits de representation et de reproduction
FR2854531B1 (fr) * 2003-05-02 2007-01-05 Medialive Procede et systeme pour securiser l'embrouillage, le desembrouillage et la distribution de sequences visuelles vectorielles
KR100987776B1 (ko) * 2004-02-04 2010-10-13 삼성전자주식회사 영상의 움직임 벡터 정보의 치환을 이용한 스크램블 장치및 방법
US8189664B2 (en) * 2006-05-18 2012-05-29 Florida Atlantic University Methods for encrypting and compressing video
JP5028889B2 (ja) * 2006-07-07 2012-09-19 Ｋｄｄｉ株式会社 符号化画像データの撹拌装置
JP5141334B2 (ja) * 2008-03-28 2013-02-13 富士通セミコンダクター株式会社 ピクチャ暗号化／復号化装置
JP2009296327A (ja) * 2008-06-05 2009-12-17 Fujitsu Electronics Inc スクランブル処理装置、デスクランブル処理装置、画像符号化装置、画像復号装置、スクランブル処理、デスクランブル処理の方法およびプログラム
WO2011088592A1 (en) * 2010-01-22 2011-07-28 Thomson Licensing Method and device for encoding an image block of an image and corresponding decoding method and device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE503549C2 (sv) * 1988-09-15 1996-07-01 Telia Ab Kryptering med efterföljande källkodning
KR0184313B1 (ko) * 1993-04-09 1999-05-01 모리시타 요이찌 디지털영상신호를 스크램블 및 디스크램블해서 전송하는 스크램블전송장치
JPH0730855A (ja) * 1993-07-08 1995-01-31 Sony Corp ビデオデータの記録方法
DE69422678T2 (de) * 1993-10-12 2001-02-22 Matsushita Electric Industrial Co., Ltd. Verschlüsselungssystem, Verschlüsselungsgerät und Entschlüsselungsgerät
FI97928C (fi) * 1994-03-21 1997-03-10 Nokia Technology Gmbh Menetelmä digitaalisessa muodossa siirrettävän televisiolähetyksen salaamiseksi
JPH07283809A (ja) * 1994-04-08 1995-10-27 Mitsubishi Corp 暗号鍵システム
US5668810A (en) * 1995-04-26 1997-09-16 Scientific-Atlanta, Inc. Data transmission protocol method and apparatus
JP3283771B2 (ja) * 1996-11-07 2002-05-20 日本電気株式会社 映像送信方法

Also Published As

Publication number Publication date
US6459794B1 (en) 2002-10-01
CN1169367C (zh) 2004-09-29
FR2771581A1 (fr) 1999-05-28
JPH11225323A (ja) 1999-08-17
EP0920209A1 (en) 1999-06-02
CN1224305A (zh) 1999-07-28

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