JP2009177655A - 記録装置及び記録方法 - Google Patents
記録装置及び記録方法 Download PDFInfo
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Abstract
【解決手段】
本発明の記録装置は、コンテンツデータ及びコンテンツデータのコピーに関する情報を含むデータを受信する受信部と、受信手段に受信したコンテンツデータ及びコンテンツデータのコピーに関する情報を分離して抽出する分離抽出部と、分離抽出手段で抽出されたコンテンツデータを複数のデータに分割して第1の記録媒体に書き込む書込部と、複数のデータ毎に暗号化する暗号鍵を生成する暗号鍵生成部と、コピーに関する情報と前記生成された暗号鍵とから複数のデータ毎の複数のコンテンツ保護管理情報を生成するコピー制御情報処理部と、を備え、第1の記録媒体に書き込まれたコンテンツデータが第2の記録媒体に記録される場合、複数のデータが記録された後に複数のコンテンツ保護管理情報が記録されることを特徴とする。
【選択図】図22
Description
図1は、本実施例のシステムの構成例を示すブロック図である。放送で情報を送受信して記録再生する場合を例示している。
図2は、図1のシステムのうち、送信装置1の構成例を示すブロック図である。
コピー制御情報は、コピーの可否や回数などの制限を制御する情報であり、例えば管理情報付与部16で付加される。コンテント利用記述子とデジタルコピー制御記述子などを含む。
数制限コピー可」の対象でない場合に必ず配置(送出)する。
例を示す。
図10は、図1のシステムのうち、受信装置3の構成例を示すブロック図である。
11 コピー禁止(Copy never)
01 録画後は再コピー不可能(No more copies)
10 一世代のみの記録が可能(Copy one generation)
00 コピー可能(Copy free)
といった指定が考えられる。例えば、受信装置3において「Copy One Generation」で記録した番組コンテンツに対して、01=Copy One Generationで1回コピーされたものをこれ以上コピーできない(No More Copies)と定義する。
受信装置3における記録(録画)の処理手順について説明する前に、ここで、記録媒体に記録されるデータ構成について説明しておく。
図18は、受信装置3で番組コンテンツをコピーする手順の例を示すフローチャートである。
図19は、実施例に係る受信装置の番組コンテンツをムーブ(移動)する手順を示すフローチャートである。
Claims (9)
- コンテンツデータ及び前記コンテンツデータのコピーに関する情報を含むデータを受信する受信部と、
前記受信手段に受信したコンテンツデータ及びコンテンツデータのコピーに関する情報を分離して抽出する分離抽出部と、
前記分離抽出手段で抽出されたコンテンツデータを複数のデータに分割して第1の記録媒体に書き込む書込部と、
前記複数のデータ毎に暗号化する暗号鍵を生成する暗号鍵生成部と、
前記コピーに関する情報と前記生成された暗号鍵とから前記複数のデータ毎の複数のコンテンツ保護管理情報を生成するコピー制御情報処理部と、を備え、
前記第1の記録媒体に書き込まれたコンテンツデータが第2の記録媒体に記録される場合、前記複数のデータが記録された後に前記複数のコンテンツ保護管理情報が記録されることを特徴とする記録装置。 - 請求項1に記載の記録装置において、
前記コンテンツ保護管理情報は、前記複数のデータ毎に暗号化する暗号鍵、コピー世代を制御する情報を示すコピー世代制御情報、前記複数のデータのコピー可能個数を示すコピー可能個数情報であることを特徴とする記録装置。 - 請求項2に記載の記録装置において、
コピー世代制御情報及びコピー可能個数情報を用いて前記第1の記録媒体から前記第2の記録媒体への前記コンテンツデータの記録を制御する制御部を備えてなることを特徴とする記録装置。 - 請求項3に記載の記録装置において、
前記制御部は、前記コピー可能個数情報が1以上の場合、前記コピー世代制御情報の更新を行わず、当該コピー可能個数情報を1つデクリメントして、前記第1の記録媒体から前記第2の記録媒体への前記コンテンツデータの記録するように制御することを特徴とする記録装置。 - 請求項3に記載の記録装置において、
前記制御部は、前記コピー可能個数情報が0の場合、前記第1の記録媒体から前記複数のデータに対応する前記暗号鍵を削除した後コピー可能個数情報を削除することを特徴とする記録装置。 - 請求項3に記載の記録装置において、
前記制御部は、前記コピー可能個数情報が0の場合、前記第1の記録媒体から前記複数のデータに対応する前記暗号鍵を削除した後、前記第2の記録媒体に前記暗号鍵を記録することを特徴とする記録装置。 - 請求項1に記載の記録装置において、
前記第1の記録媒体は前記記録装置に内臓された記録媒体であって、前記第2の記録媒体は前記記録装置に着脱可能な記録媒体であることを特徴とする記録装置。 - 請求項1に記載の記録装置において、
前記第2の記録媒体は、コピー制御が可能なセキュリティリムーバブルメディアであることを特徴とする記録装置。 - コンテンツデータ及び前記コンテンツデータのコピーに関する情報を含むデータを受信する受信ステップと、
前記受信したコンテンツデータ及びコンテンツデータのコピーに関する情報を分離して抽出する分離抽出ステップと、
前記分離抽出されたコンテンツデータを複数のデータに分割して第1の記録媒体に書き込む書込ステップと、
前記複数のデータ毎に暗号化する暗号鍵を生成する暗号鍵生成ステップと、
前記コピーに関する情報と前記生成された暗号鍵とから前記複数のデータ毎の複数のコンテンツ保護管理情報を生成するステップと、を有し、
前記第1の記録媒体に書き込まれたコンテンツデータが第2の記録媒体に記録される場合、前記複数のデータが記録された後に前記複数のコンテンツ保護管理情報が記録されることを特徴とする記録方法。
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US12/270,887 US20090190753A1 (en) | 2008-01-28 | 2008-11-14 | Recording apparatus and recording method |
CN200810178490.9A CN101499303B (zh) | 2008-01-28 | 2008-12-01 | 记录装置和记录方法 |
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JP2012050027A (ja) * | 2010-08-30 | 2012-03-08 | Nec Personal Computers Ltd | 情報処理装置及びその制御方法 |
JP2012080361A (ja) * | 2010-10-01 | 2012-04-19 | Sony Corp | 記録装置、撮像記録装置、記録方法及びプログラム |
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JP4876082B2 (ja) | 2012-02-15 |
US20090190753A1 (en) | 2009-07-30 |
CN101499303A (zh) | 2009-08-05 |
CN101499303B (zh) | 2012-12-26 |
EP2083567A2 (en) | 2009-07-29 |
EP2083567A3 (en) | 2012-05-02 |
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