JP2012248201A - 複数のデジタル権利管理のためのコンテンツ配信 - Google Patents
複数のデジタル権利管理のためのコンテンツ配信 Download PDFInfo
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- JP2012248201A JP2012248201A JP2012154898A JP2012154898A JP2012248201A JP 2012248201 A JP2012248201 A JP 2012248201A JP 2012154898 A JP2012154898 A JP 2012154898A JP 2012154898 A JP2012154898 A JP 2012154898A JP 2012248201 A JP2012248201 A JP 2012248201A
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- 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
- H04N7/165—Centralised control of user terminal ; Registering at central
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/24—Systems for the transmission of television signals using pulse code modulation
- H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
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- 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
- H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode
- H04N9/7925—Processing of colour television signals in connection with recording for more than one processing mode for more than one standard
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Human Computer Interaction (AREA)
- Computer Graphics (AREA)
- Storage Device Security (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
【解決手段】コンテンツの識別されたセグメントを複写し(610)、次に、第1のDRMに関連した第1の暗号化方式を用いて、コンテンツの識別されたセグメントを暗号化して、第1の暗号化セグメントを形成する。第2のDRMに関連した第2の暗号化方式を用いて、複写セグメントを暗号化(614)して、第2の暗号化セグメントを形成する。第1の及び第2の暗号化セグメントコンテンツを指し示すポインタのセットを生成する(618)。次に、コンテンツの第1及び第2の暗号化セグメントを含むファイルを生成する(622)。次に、選択的暗号化複数のDRM使用可能ファイルを生成するために、DRM権利データとともに、コンテンツの第1及び第2の暗号化セグメント、ポインタ、及び暗号化されていないコンテンツを含むファイルを生成する。
【選択図】図6
Description
本出願は、キャンディローア(Candelore)等によって2002年10月18日に出願された米国特許出願第10/273,905号、発明の名称「ビデオスライス及びアクティブ領域に基づく2つの部分的暗号化(Video Slice and Active Region Based Dual Partial Encryption)」、キャンディローア等によって2002年10月18日に出願された米国特許出願第10/273,903号、発明の名称「スターパターン部分的暗号化(Star Pattern Partial Encryption)」、キャンディローア等によって2002年10月18日に出願された米国特許出願第10/274,084号、発明の名称「スライスマスク及びモートパターン部分的暗号化(Slice Mask and Moat Pattern Partial Encryption)」、及びキャンディローア等によって2002年10月18日に出願された米国特許出願第10/274,019号、発明の名称「ビデオ場面変化検出(Video Scene Change Detection)」に関連しており、これらの米国特許出願は、引用することにより、本願に援用される。
本出願の明細書で開示する一部は、著作権保護の対象となる内容を含んでいる。特許文書又は特許開示としての形で公開されているので、著作権者は、特許商標局の特許ファイル又は記録としての、特許文書又は特許開示の複製に対しては異議はないが、そうでない場合は、いかなるものであれ全ての著作権の権利を留保する。
Claims (1)
- 複数の権利管理シナリオ(DRM)の使用を可能にする方法であって、
暗号化のために、デジタルコンテンツを表す暗号化されていないデータを調べて、暗号化されていないデータのセグメントを識別するステップと、
データの前記セグメントを複製して、前記識別されたデータのセグメントの第1及び第2のコピーを生成するステップと、
前記識別されたデータのセグメントを複製した後に、第1のDRMと関連付けられた第1の暗号方法を用いて、前記識別されたデータのセグメントの第1のコピーを暗号化して、第1の暗号化されたセグメントを形成するステップと、
前記識別されたデータのセグメントを複製した後に、第2のDRMと関連付けられた第2の暗号方法を用いて、前記識別されたデータのセグメントの第2のコピーを暗号化して、第2の暗号化されたセグメントを形成するステップと、
前記第1の暗号化されたセグメントの位置を指し示す第1のポインタを生成するステップと、
前記第2の暗号化されたセグメントの位置を指し示す第2のポインタを生成するステップと、
前記第1及び第2の暗号化されたセグメントを形成した後に、前記識別されたデータのセグメントを、デジタルコンテンツ内の第1の暗号化されたセグメント及び第2の暗号化されたセグメントの両方と交換し、
前記第1及び第2のポインタを生成した後に、前記第1及び第2のポインタの両方を挿入して、部分的暗号化2つのDRM使用可能ファイルを形成するステップと、
を含み、
ここで、暗号化のために識別されたセグメントは、前記デジタルコンテンツを構成する全セグメントの一部のみを含み、暗号化のために識別されないセグメントは、部分的に暗号化された2つのDRM使用可能ファイルにおいて暗号化されないままである、方法。
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CN (2) | CN1682486B (ja) |
AU (1) | AU2003268468A1 (ja) |
CA (1) | CA2498326C (ja) |
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2003
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Also Published As
Publication number | Publication date |
---|---|
CN1682486A (zh) | 2005-10-12 |
JP2005538453A (ja) | 2005-12-15 |
CA2498326A1 (en) | 2004-03-18 |
US20040047470A1 (en) | 2004-03-11 |
WO2004023717A2 (en) | 2004-03-18 |
EP1543650A2 (en) | 2005-06-22 |
US7151833B2 (en) | 2006-12-19 |
CA2498326C (en) | 2012-12-04 |
JP5523513B2 (ja) | 2014-06-18 |
EP1543650A4 (en) | 2009-03-04 |
CN1682486B (zh) | 2013-08-21 |
US20040049694A1 (en) | 2004-03-11 |
AU2003268468A1 (en) | 2004-03-29 |
KR101250615B1 (ko) | 2013-04-03 |
US7242773B2 (en) | 2007-07-10 |
WO2004023717A3 (en) | 2004-12-29 |
EP1543650B1 (en) | 2016-06-22 |
US20040049691A1 (en) | 2004-03-11 |
US7120250B2 (en) | 2006-10-10 |
US20040049690A1 (en) | 2004-03-11 |
KR20050046750A (ko) | 2005-05-18 |
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