JP4645687B2 - 復号装置及び復号方法 - Google Patents
復号装置及び復号方法 Download PDFInfo
- Publication number
- JP4645687B2 JP4645687B2 JP2008145262A JP2008145262A JP4645687B2 JP 4645687 B2 JP4645687 B2 JP 4645687B2 JP 2008145262 A JP2008145262 A JP 2008145262A JP 2008145262 A JP2008145262 A JP 2008145262A JP 4645687 B2 JP4645687 B2 JP 4645687B2
- Authority
- JP
- Japan
- Prior art keywords
- digital watermark
- video
- audio information
- circuit
- storage medium
- 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
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
- H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
Description
Claims (2)
- 蓄積媒体から再生された映像または音声情報を復号して出力する復号装置であって、
前記映像または音声情報が暗号化されているときに、前記蓄積媒体に記録されている暗号化キーを用いて復号する暗号解読手段と、
前記映像または音声情報に重畳されている電子透かし情報を検出する電子透かし検出手段と、
暗号化されていない、または、前記暗号解読手段により復号された前記映像または音声情報を出力する出力手段と、
前記暗号解読手段において暗号の復号を行ったときには、前記電子透かし検出手段の検出結果によらず前記映像または音声情報の出力を行い、前記映像または音声情報が暗号化されていないときには、前記電子透かし検出手段の検出結果によって出力可能かどうかを判断する制御手段とを有することを特徴とする復号装置。 - 蓄積媒体から再生された映像または音声情報を復号して出力する復号方法であって、
前記映像または音声情報が暗号化されているときに、前記蓄積媒体に記録されている暗号化キーを用いて復号し、
前記映像または音声情報に重畳されている電子透かし情報を検出し、
暗号化されていない、または、前記暗号解読手段により復号された前記映像または音声情報を出力し、
前記暗号化キーを用いた復号のステップにおいて暗号の復号を行ったときには、前記電子透かし情報の検出結果によらず前記映像または音声情報の出力を行い、前記映像または音声情報が暗号化されていないときには、前記電子透かし情報の検出結果によって出力可能かどうかを判断することを特徴とする復号方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008145262A JP4645687B2 (ja) | 1999-04-28 | 2008-06-03 | 復号装置及び復号方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12125399 | 1999-04-28 | ||
JP2008145262A JP4645687B2 (ja) | 1999-04-28 | 2008-06-03 | 復号装置及び復号方法 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006084461A Division JP4201010B2 (ja) | 1999-04-28 | 2006-03-27 | 復号装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008262690A JP2008262690A (ja) | 2008-10-30 |
JP4645687B2 true JP4645687B2 (ja) | 2011-03-09 |
Family
ID=34430878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008145262A Expired - Lifetime JP4645687B2 (ja) | 1999-04-28 | 2008-06-03 | 復号装置及び復号方法 |
Country Status (2)
Country | Link |
---|---|
US (2) | US6882728B1 (ja) |
JP (1) | JP4645687B2 (ja) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2783658B1 (fr) * | 1998-09-23 | 2000-10-13 | Thomson Multimedia Sa | Protection contre la copie de donnees numeriques stockees sur un support d'informations |
US7127744B2 (en) | 2000-03-10 | 2006-10-24 | Digimarc Corporation | Method and apparatus to protect media existing in an insecure format |
JP2002074831A (ja) * | 2000-08-31 | 2002-03-15 | Sony Corp | データ出力方法および装置、データ再生方法および装置、データ記録方法および装置、データ記録再生方法および装置 |
JP4622082B2 (ja) * | 2000-10-20 | 2011-02-02 | ソニー株式会社 | データ再生装置、データ記録装置、およびデータ再生方法、データ記録方法、リスト更新方法、並びにプログラム提供媒体 |
US8055899B2 (en) * | 2000-12-18 | 2011-11-08 | Digimarc Corporation | Systems and methods using digital watermarking and identifier extraction to provide promotional opportunities |
US20030035646A1 (en) * | 2001-08-20 | 2003-02-20 | Vat 19, Llc | Digital video device having a verification code thereon and method of generating a verification code |
JP2004030882A (ja) * | 2002-04-30 | 2004-01-29 | Toshiba Corp | レンダリング装置、コピー制御方法及びプログラム |
US20040081433A1 (en) * | 2002-10-28 | 2004-04-29 | Stewart Phillip T. | DVD business system |
US7849016B2 (en) * | 2002-12-18 | 2010-12-07 | Vincent So | Internet-based data content rental system and method |
US7926113B1 (en) | 2003-06-09 | 2011-04-12 | Tenable Network Security, Inc. | System and method for managing network vulnerability analysis systems |
JPWO2005008659A1 (ja) * | 2003-07-23 | 2006-09-07 | 松下電器産業株式会社 | データ処理装置 |
US7761918B2 (en) * | 2004-04-13 | 2010-07-20 | Tenable Network Security, Inc. | System and method for scanning a network |
JP2006338704A (ja) * | 2005-05-31 | 2006-12-14 | Funai Electric Co Ltd | 動画像処理装置 |
JP4415904B2 (ja) * | 2005-05-31 | 2010-02-17 | 船井電機株式会社 | 動画像処理装置 |
US20070217612A1 (en) * | 2006-03-17 | 2007-09-20 | Vincent So | Method and system of key-coding a video |
US7894624B2 (en) * | 2006-06-23 | 2011-02-22 | Kabushiki Kaisha Toshiba | Image processing method |
US7792377B2 (en) * | 2007-04-25 | 2010-09-07 | Huper Laboratories Co., Ltd. | Method of image authentication and restoration |
JP5166434B2 (ja) * | 2007-10-17 | 2013-03-21 | パナソニック株式会社 | コンテンツ再生装置、コンテンツ再生方法、記録媒体、及び集積回路 |
US8438270B2 (en) | 2010-01-26 | 2013-05-07 | Tenable Network Security, Inc. | System and method for correlating network identities and addresses |
US8302198B2 (en) | 2010-01-28 | 2012-10-30 | Tenable Network Security, Inc. | System and method for enabling remote registry service security audits |
US8707440B2 (en) * | 2010-03-22 | 2014-04-22 | Tenable Network Security, Inc. | System and method for passively identifying encrypted and interactive network sessions |
US8549650B2 (en) | 2010-05-06 | 2013-10-01 | Tenable Network Security, Inc. | System and method for three-dimensional visualization of vulnerability and asset data |
JP4996762B1 (ja) | 2011-08-31 | 2012-08-08 | 株式会社東芝 | 電子機器およびコンテンツ転送方法 |
US9367707B2 (en) | 2012-02-23 | 2016-06-14 | Tenable Network Security, Inc. | System and method for using file hashes to track data leakage and document propagation in a network |
US9043920B2 (en) | 2012-06-27 | 2015-05-26 | Tenable Network Security, Inc. | System and method for identifying exploitable weak points in a network |
US9088606B2 (en) | 2012-07-05 | 2015-07-21 | Tenable Network Security, Inc. | System and method for strategic anti-malware monitoring |
US9467464B2 (en) | 2013-03-15 | 2016-10-11 | Tenable Network Security, Inc. | System and method for correlating log data to discover network vulnerabilities and assets |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996041468A1 (en) * | 1995-06-07 | 1996-12-19 | Macrovision Corporation | Method and apparatus for copy protection for various recording media using a video finger print |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5130864A (en) * | 1989-10-11 | 1992-07-14 | Matsushita Electric Industrial Co., Ltd. | Digital recording and reproducing apparatus or digital recording apparatus |
JP3796802B2 (ja) | 1995-10-30 | 2006-07-12 | 日本ビクター株式会社 | 光ディスクへの記録方法及び光ディスク装置 |
US5719937A (en) * | 1995-12-06 | 1998-02-17 | Solana Technology Develpment Corporation | Multi-media copy management system |
JPH10308088A (ja) | 1996-12-25 | 1998-11-17 | Sony Corp | 記録再生装置および方法、入出力装置および方法、記憶装置、送出装置、並びに情報処理装置および方法 |
US5949877A (en) * | 1997-01-30 | 1999-09-07 | Intel Corporation | Content protection for transmission systems |
JP4088722B2 (ja) * | 1997-05-14 | 2008-05-21 | ソニー株式会社 | 情報信号利用制限方法および情報信号処理装置 |
US5940135A (en) * | 1997-05-19 | 1999-08-17 | Aris Technologies, Inc. | Apparatus and method for encoding and decoding information in analog signals |
JPH1173725A (ja) | 1997-08-29 | 1999-03-16 | Sony Corp | 情報信号記録再生システム、情報記録装置、情報信号再生装置および情報信号記録再生方法 |
JP3488603B2 (ja) | 1997-09-16 | 2004-01-19 | 株式会社東芝 | 電子透かしを利用したコピープロテクトシステム |
JPH11112494A (ja) | 1997-10-03 | 1999-04-23 | Mitsubishi Electric Corp | クライアント・サーバシステム |
JPH11176090A (ja) * | 1997-12-10 | 1999-07-02 | Sony Corp | データ再生装置、データ処理装置、データ伝送システム、データ再生方法、データ処理方法、並びに、データ伝送方法 |
JP2000048478A (ja) * | 1998-05-26 | 2000-02-18 | Yamaha Corp | ディジタルコピー制御方法及びそれを用いた装置 |
JP3835655B2 (ja) * | 1998-06-09 | 2006-10-18 | ソニー株式会社 | 情報信号再生装置、情報信号処理装置、情報信号再生方法および情報信号出力方法 |
-
1999
- 1999-09-09 US US09/392,564 patent/US6882728B1/en not_active Expired - Lifetime
-
2004
- 2004-10-07 US US10/959,081 patent/US7336786B2/en not_active Expired - Fee Related
-
2008
- 2008-06-03 JP JP2008145262A patent/JP4645687B2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996041468A1 (en) * | 1995-06-07 | 1996-12-19 | Macrovision Corporation | Method and apparatus for copy protection for various recording media using a video finger print |
Also Published As
Publication number | Publication date |
---|---|
US7336786B2 (en) | 2008-02-26 |
US6882728B1 (en) | 2005-04-19 |
JP2008262690A (ja) | 2008-10-30 |
US20050058286A1 (en) | 2005-03-17 |
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