JP5019345B2 - 臨時保存を利用したマルチストリーミング方法及び装置 - Google Patents
臨時保存を利用したマルチストリーミング方法及び装置 Download PDFInfo
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Storage Device Security (AREA)
- Television Signal Processing For Recording (AREA)
Description
204 2進信号
210 ストリーミング装置
220 ドライブ
222 キー生成情報
224、232、234、252、272、277 コンテンツ
230 復号化部
240 ストリーミングサーバー
242、244 ストリーミングパケット
250 臨時保存部
254 マルチストリーミング命令
256 パワーオフ命令
258 除去命令
260 第1再生機器
265 第2再生機器
270、275 ストリーミングクライアント
280、285 デコーダ
282、287 映像信号
Claims (10)
- 記録媒体に暗号化されて保存されたコンテンツが第1機器にストリーミングされる途中に、前記コンテンツを第2機器にマルチストリーミングする装置であって、
a)前記記録媒体から前記コンテンツ及び前記コンテンツを復号化するのに必要なキー生成情報を抽出するドライブと、
b)前記第1機器へのストリーミング途中に、前記ドライブから前記暗号化されたコンテンツを受信して保存するが前記キー生成情報は保存せずに、ユーザーによる前記第2機器へのマルチストリーミング命令に応答して、前記保存されたコンテンツを前記第2機器にストリーミングするコンテンツとして復号化部に伝送する臨時保存部と、
c)前記キー生成情報を利用して前記コンテンツを復号化することにより、復号化されたコンテンツを生成する前記復号化部と、
d)所定のストリーミングプロトコルにより、前記復号化されたコンテンツを前記第1機器及び前記第2機器にマルチストリーミングするストリーミングサーバーと、
を備えることを特徴とする装置。 - b)前記臨時保存部は、ユーザーが所望の再生位置に該当するコンテンツを抽出した後、前記復号化部に伝送し、前記マルチストリーミング命令は、ユーザーが所望の再生位置に関する情報を備えることを特徴とする請求項1に記載の装置。
- b)前記臨時保存部は、ユーザーによる前記ストリーミング装置のパワーオフ命令に応答して、前記臨時保存部に保存されたコンテンツを削除することを特徴とする請求項1に記載の装置。
- b)前記臨時保存部は、ユーザーによる前記記録媒体除去命令に応答して、前記臨時保存部に保存されたコンテンツを削除することを特徴とする請求項1に記載の装置。
- 前記臨時記録媒体は、ハードディスクであることを特徴とする請求項1に記載の装置。
- 記録媒体に暗号化されて保存されたコンテンツが第1機器にストリーミングされる途中に、前記コンテンツを第2機器にマルチストリーミングする方法であって、
a)前記記録媒体から前記コンテンツ及び前記コンテンツを復号化するのに必要なキー生成情報を抽出するステップと、
b)前記コンテンツが前記第1機器にストリーミングされる途中に、前記暗号化されたコンテンツだけを暗号化された状態で臨時記録媒体に保存するステップと、
c)前記第2機器へのマルチストリーミング命令に応答して、前記キー生成情報を利用して前記コンテンツ及び前記保存されたコンテンツを復号化するステップと、
d)前記復号化されたコンテンツを前記第1機器及び前記第2機器にストリーミングするステップと、
を含むことを特徴とする方法。 - c)前記復号化するステップは、ユーザーが所望の再生位置に該当するコンテンツを復号化することを特徴とし、前記マルチストリーミング命令は、ユーザーが所望の再生位置に関する情報を備えることを特徴とする請求項6に記載の方法。
- e)ユーザーによる前記ストリーミング装置のパワーオフ命令または前記記録媒体除去命令に応答して、前記臨時記録媒体に保存されたコンテンツを削除するステップを更に含むことを特徴とする請求項6に記載の方法。
- 前記臨時記録媒体は、ハードディスクであることを特徴とする請求項6に記載の方法。
- 請求項6に記載の方法をコンピュータで実行させるためのプログラムを記録したコンピュータで読み取り可能な記録媒体。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020040073132A KR100636173B1 (ko) | 2004-09-13 | 2004-09-13 | 임시 저장을 이용한 멀티-스트리밍 방법 및 장치 |
KR10-2004-0073132 | 2004-09-13 |
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JP2006087094A JP2006087094A (ja) | 2006-03-30 |
JP5019345B2 true JP5019345B2 (ja) | 2012-09-05 |
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JP2005261225A Expired - Fee Related JP5019345B2 (ja) | 2004-09-13 | 2005-09-08 | 臨時保存を利用したマルチストリーミング方法及び装置 |
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US (1) | US8041034B2 (ja) |
EP (1) | EP1635345A3 (ja) |
JP (1) | JP5019345B2 (ja) |
KR (1) | KR100636173B1 (ja) |
CN (1) | CN1767032B (ja) |
WO (1) | WO2006031027A1 (ja) |
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US20060269056A1 (en) * | 2005-05-19 | 2006-11-30 | Bruce Montag | Messaging interface for protected digital outputs |
US8306918B2 (en) | 2005-10-11 | 2012-11-06 | Apple Inc. | Use of media storage structure with multiple pieces of content in a content-distribution system |
US7907728B2 (en) * | 2005-11-30 | 2011-03-15 | Cable Television Laboratories, Inc. | Method and system of transferring scrambled content |
KR100797389B1 (ko) * | 2006-04-21 | 2008-01-28 | 한국전자통신연구원 | 다중 디스크립션 코딩을 이용한 클러스터 기반의 스트리밍시스템 및 그 방법 |
US8224751B2 (en) | 2006-05-03 | 2012-07-17 | Apple Inc. | Device-independent management of cryptographic information |
KR100772195B1 (ko) | 2006-08-22 | 2007-11-01 | 한국전자통신연구원 | 다중 스트리밍 서비스 방법 및 이를 위한 장치 |
US9311492B2 (en) | 2007-05-22 | 2016-04-12 | Apple Inc. | Media storage structures for storing content, devices for using such structures, systems for distributing such structures |
US8347098B2 (en) | 2007-05-22 | 2013-01-01 | Apple Inc. | Media storage structures for storing content, devices for using such structures, systems for distributing such structures |
JP2011008525A (ja) * | 2009-06-25 | 2011-01-13 | Toshiba Corp | 情報処理装置及び映像処理方法 |
JP5539024B2 (ja) * | 2010-05-27 | 2014-07-02 | キヤノン株式会社 | データ暗号化装置およびその制御方法 |
WO2014154288A1 (en) * | 2013-03-28 | 2014-10-02 | Irdeto B.V. | Processing digital content |
US11044505B2 (en) * | 2019-01-30 | 2021-06-22 | Nbcuniversal Media, Llc | Digital rights management for cinema systems |
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JPH0277885A (ja) | 1988-09-13 | 1990-03-16 | Sanyo Electric Co Ltd | 情報ファイル装置 |
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-
2004
- 2004-09-13 KR KR1020040073132A patent/KR100636173B1/ko not_active IP Right Cessation
-
2005
- 2005-08-31 CN CN2005100938554A patent/CN1767032B/zh not_active Expired - Fee Related
- 2005-09-06 WO PCT/KR2005/002936 patent/WO2006031027A1/en active Application Filing
- 2005-09-08 JP JP2005261225A patent/JP5019345B2/ja not_active Expired - Fee Related
- 2005-09-09 EP EP05255552A patent/EP1635345A3/en not_active Ceased
- 2005-09-13 US US11/224,146 patent/US8041034B2/en not_active Expired - Fee Related
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EP1635345A3 (en) | 2006-03-22 |
EP1635345A2 (en) | 2006-03-15 |
CN1767032B (zh) | 2013-03-27 |
US8041034B2 (en) | 2011-10-18 |
CN1767032A (zh) | 2006-05-03 |
WO2006031027A1 (en) | 2006-03-23 |
US20060071824A1 (en) | 2006-04-06 |
KR20060024239A (ko) | 2006-03-16 |
KR100636173B1 (ko) | 2006-10-19 |
JP2006087094A (ja) | 2006-03-30 |
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