JPH11225323A5 - - Google Patents

Info

Publication number
JPH11225323A5
JPH11225323A5 JP1998334079A JP33407998A JPH11225323A5 JP H11225323 A5 JPH11225323 A5 JP H11225323A5 JP 1998334079 A JP1998334079 A JP 1998334079A JP 33407998 A JP33407998 A JP 33407998A JP H11225323 A5 JPH11225323 A5 JP H11225323A5
Authority
JP
Japan
Prior art keywords
block
representing
pixels
coefficient
data
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
JP1998334079A
Other languages
English (en)
Japanese (ja)
Other versions
JPH11225323A (ja
Filing date
Publication date
Priority claimed from FR9714844A external-priority patent/FR2771581B1/fr
Application filed filed Critical
Publication of JPH11225323A publication Critical patent/JPH11225323A/ja
Publication of JPH11225323A5 publication Critical patent/JPH11225323A5/ja
Pending legal-status Critical Current

Links

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 JPH11225323A (ja) 1999-08-17
JPH11225323A5 true 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)

Families Citing this family (26)

* 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
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
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
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
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

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