JPH11225323A - 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 - Google Patents

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

Info

Publication number
JPH11225323A
JPH11225323A JP10334079A JP33407998A JPH11225323A JP H11225323 A JPH11225323 A JP H11225323A JP 10334079 A JP10334079 A JP 10334079A JP 33407998 A JP33407998 A JP 33407998A JP H11225323 A JPH11225323 A JP H11225323A
Authority
JP
Japan
Prior art keywords
coefficient
video data
block
descrambling
representing
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.)
Pending
Application number
JP10334079A
Other languages
English (en)
Japanese (ja)
Other versions
JPH11225323A5 (enExample
Inventor
Vito Mario De
デ・ヴィト マリオ
Jean-Bernard Fischer
フィッシェール ジャン−ベルナール
Veronique Pla
プラ ヴェロニク
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
Publication of JPH11225323A publication Critical patent/JPH11225323A/ja
Publication of JPH11225323A5 publication Critical patent/JPH11225323A5/ja
Pending 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)
JP10334079A 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 Pending JPH11225323A (ja)

Applications Claiming Priority (2)

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
FR9714844 1997-11-26

Publications (2)

Publication Number Publication Date
JPH11225323A true JPH11225323A (ja) 1999-08-17
JPH11225323A5 JPH11225323A5 (enExample) 2006-01-19

Family

ID=9513803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10334079A Pending 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

Country Status (5)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008017281A (ja) * 2006-07-07 2008-01-24 Kddi Corp 符号化画像データの撹拌装置および復号装置
US7519228B2 (en) 2002-11-21 2009-04-14 Samsung Electronics Co., Ltd. Method and apparatus for encrypting and compressing multimedia data
JP2009244327A (ja) * 2008-03-28 2009-10-22 Fujitsu Microelectronics Ltd 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

Families Citing this family (22)

* Cited by examiner, † Cited by third party
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
US8695029B2 (en) * 2002-10-03 2014-04-08 Nagra France System and method of adaptive and progressive descrambling of streaming video
FR2845556B1 (fr) * 2002-10-03 2005-02-11 Medialive Embrouillage adaptatif et progressif de flux video
FR2845553B1 (fr) * 2002-10-03 2009-10-23 Medialive Desembrouillage adaptatif et progressif de flux video
US9038096B2 (en) 2002-10-03 2015-05-19 Nagra France Sas System and method of adaptive and progressive descrambling of digital image content
FR2846179B1 (fr) 2002-10-21 2005-02-04 Medialive Embrouillage adaptatif et progressif de flux audio
FR2846178B1 (fr) * 2002-10-21 2005-03-11 Medialive Desembrouillage adaptatif et progressif de flux audio
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
FR2850515B1 (fr) * 2003-01-23 2005-07-01 Medialive Procede et systeme adaptatif et progressif de distribution securisee d'images fixes codees en ondelettes
FR2850514B1 (fr) * 2003-01-23 2005-05-06 Medialive Desembrouillage adaptatif et progressif 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
EP2526696A4 (en) * 2010-01-22 2014-06-04 Thomson Licensing METHOD AND DEVICE FOR CODING AN IMAGE BLOCK OF AN IMAGE AND RELATED 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7519228B2 (en) 2002-11-21 2009-04-14 Samsung Electronics Co., Ltd. Method and apparatus for encrypting and compressing multimedia data
JP2008017281A (ja) * 2006-07-07 2008-01-24 Kddi Corp 符号化画像データの撹拌装置および復号装置
JP2009244327A (ja) * 2008-03-28 2009-10-22 Fujitsu Microelectronics Ltd 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

Also Published As

Publication number Publication date
FR2771581B1 (fr) 1999-12-17
EP0920209A1 (en) 1999-06-02
FR2771581A1 (fr) 1999-05-28
CN1169367C (zh) 2004-09-29
US6459794B1 (en) 2002-10-01
CN1224305A (zh) 1999-07-28

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