JP5108308B2 - デジタルレコーダーを使用してパーソナルメディアを共有する方法 - Google Patents
デジタルレコーダーを使用してパーソナルメディアを共有する方法 Download PDFInfo
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- JP5108308B2 JP5108308B2 JP2006545415A JP2006545415A JP5108308B2 JP 5108308 B2 JP5108308 B2 JP 5108308B2 JP 2006545415 A JP2006545415 A JP 2006545415A JP 2006545415 A JP2006545415 A JP 2006545415A JP 5108308 B2 JP5108308 B2 JP 5108308B2
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Description
図1を参照し、パーソナルテレビサービスに遠隔アクセスするための通信システム(全体が100として表されている)が示されている。1つの方法によると、家庭に設置されているデジタルビデオレコーダー(DVR)110は、パーソナルテレビサービスセンター(以下、サービスセンターと称される)130と通信し、サービスセンターは、番組ガイドデータ、グラフィカルリソース(フォント、写真など)、サービス情報、および、視聴者の興味を満たすためにDVR 110がサービスセンター130とは独立して動作できるようにするその他の形式のデータを提供する。DVRの機能は、本出願人によって所有されている特許文献1に代表的に説明されており、この文書は本文書に参照文献として組み込まれている。この通信システムでは、サービスデータとユーザのプライバシーの両方が保護されるように、セキュアな配信アーキテクチャを使用してDVR 110とサービスセンター130との間でデータが転送される。DVR 110は、アンテナ115から放送信号を受信する、または、ケーブルテレビシステムからテレビ信号を受信する。
図2は、図1と合わせて、本文書に説明されている手法の機能を集合的に有効にするさまざまなプロセスを示している。
図4は、ユーザから遠隔プログラミングディレクティブを取得するために、Webサーバ200およびマイクロサーバ250によって使用されるプロセスを示しているフローチャートである。両方のプロセスは平行して示されているが、通常の使用では個別のプロセスである。このプロセスは、以下のステップを含んでいる。
図5は、番組を選択するための模範的なグラフィカルユーザインタフェース(GUI)500の図による表現である。GUI 500は、DVRのフロントパネル上に使用されているのみならず、Webサーバ200によって遠隔ユーザに提示されるWebページにも組み込まれている。GUI 500は、DVR 110において直接実施されているときには、DVR 110に組み込まれている制御プロセスによって直接操作される。GUI 500は、コンピュータネットワークを介して遠隔ユーザに提示されるときには、アクティブなサーバのWebページとして具体化される。図6は、ユーザのWebブラウザに表示される「放送中(Now Showing)」Webページの画面キャプチャである。
図7は、サービスセンター130、DVR 110、外部のコンテンツサーバ720の間のインターネットを通じたインタラクションを図解している概略構成700のブロック図であり、このインタラクションにおいては、特定のタイプのコンテンツをインターネット接続140を通じて取得し、図6に示されているような「放送中(Now Showing)」ページにそれらのコンテンツを表示できるようにするために、特定のスタイルのインターネットアクセスがDVR 110に統合されている。明快な例を図示する目的で、図7および本文書における説明においては、実施形態において使用することのできる特定の要素およびプロトコル(インターネット、Linux、DHCPなど)を示している。しかしながら、代替の実施形態においては、機能的に類似する別の要素あるいはプロトコルを使用することができる。例えば、ダウンロードは、インターネットではなく、任意の公衆ネットワーク、プライベートネットワーク、または専用ネットワークを通じて行うことができる。別のオペレーティングシステムと、別の動的アドレッシングプロトコルを使用することもできる。
1つの方法においては、2台のDVRの間でメディアおよびデータベース要素を転送するメカニズムが提供される。図7を参照し、例えば、携帯型DVR 760に設けられているような、より少ない量のディスクストレージを使用する転送の一例が示されている。一例として、ユーザは、休暇に出かける前に、必要なメディアと、関連付けられている表示されないサービスデータとを携帯型DVR 760に転送し、必要なときにメディアを使用できるように携帯型DVR 760を携帯することができる。転送の別の例は、同じ動作を達成するために2つのメディアストリームが正確に同期して再生されるように、一緒にスレーブとして機能する2台のDVR、すなわちDVR 110およびDVR 770を使用して示されている。
上述されているように、本文書における1つの方法は、DVR 110、760、770の間、またはコンテンツサーバ720とDVR 110、760、770との間で暗号化されたセキュアデータ転送を提供する。この方法では、ユーザは、1台のDVR 110に番組を録画し、次いで、別のDVR 770においてその番組を観ることができる。
図11を再び参照し、強い鍵の作成には、多くのCPUサイクルを要する。1つの方法においては、DVR 1101は、将来的に自身がメディアサーバとして指定されたときに使用するための複数の強い鍵を作成して格納するように要求されることがある。さらに、受信側DVRにおいては、強い鍵の受信時にそれを復号化するために多くのCPUサイクルが必要である。これにより、DVRの全体的なパフォーマンスが大幅に遅くなる。本文書における手法では、DVR 1102がリブートするかまたは再起動されるときに新しい強い鍵を作成するという付加的な大きな負荷から、DVR 1101が解放される。さらに、リブートまたは再起動後に強い鍵を復号化するという大きな負荷から、DVR 1102が解放される。
サーバからDVRへのインターネットを通じたメディアのダウンロードを容易にするため、図12は、図9に示されているデジタル証明書の変形を示している。また、図7を再び参照し、サービスセンター130は、DVR 110、770に配布される証明書901を作成する。DVR 110、770は、サービスのシリアル番号フィールド903における特殊な接頭辞を持つシリアル番号、例えばFFFxxxxxxxxxxxx(「xxxxxxxxxxxx」は、バージョン番号、サービスプロバイダなどの追加情報を提供するために使用される)を使用して、サービスエントリを認識する。表示名902は、そのサービスを示す何らかの名前(「スペシャルビデオ」など)に設定される。鍵フィールド1204、1206には、直接的な公開鍵の代わりに、サービスのアクセスポイントの完全修飾ドメイン名が入力される。
図15を参照し、DVR 1503、1504、1505に提供されるコンテンツは、最初に、コンテンツサーバ1501(サードパーティのコンテンツサーバなど)によって作成することができる。コンテンツサーバ1501は、DVRの暗号化手法あるいはアーキテクチャに関する情報にアクセスできない。DVR 1502は、コンテンツを符号化および暗号化するために使用される。DVR 1502は、高速ネットワークエンジンを有し、「暗号化パイプライン」として機能する。データは、コンテンツサーバ1501からDVR 1502に送られる。DVR 1502は、データを自身のローカルなストレージデバイスに書き込むときに、(必要な場合には)データを符号化し、暗号化する。次いで、DVR 1502は、ローカルストレージデバイスからデータを復号化せずに読み込み、DVR 1503、1504、1505の中から選択される対象DVRにそのデータをネットワークを通じて送る。
上述されているように、上記のいずれの実施例においても、メディアサーバは、パーソナルコンピュータ、DVR、またはコンテンツを提供できる任意の他のメカニズムとすることができる。本文書において説明されている方法では、DVRは、メディアサーバのクライアントとして、メディアサーバに格納されているミュージックコンテンツ、ビデオコンテンツ、写真コンテンツなどのマルチメディアコンテンツにアクセスすることができる。しかしながら、DVRおよびメディアサーバはインターネットにアクセスすることができるため、コンテンツは、特定のメディアサーバが提供元である必要はなく、物理的に格納されている必要もない。
・ 実際のコンテンツ(例:JPEG、MP3、またはMPEGファイルの形式)
・ DVRのコンフィギュレーション設定、例えば、録画スケジュール、データベースの修正、コンテンツのプリファレンスなど。
・ インターネット上のどこかに位置している別のサーバ、または別のサーバに格納されているコンテンツへの「リンク」。
110 デジタルビデオレコーダー(DVR)
115 アンテナ
120 テレビ
125、135 インタフェース
130 パーソナルテレビサービスセンター
140 ネットワーク
145 モデムバンク
150 番組スケジュール
155 遠隔コンピュータ
160 携帯情報端末(PDA)
200 Webサーバ
210 番組データベース
220 ユーザデータベース
230 イベントデータベース
240 ディスパッチプロセス
250 マイクロサーバ
260 ローカル番組ガイド
270 イベントキュー
280 疑似乱数生成器(PRNG)
290 Webブラウザ
300 ユーザ記録
310 ユーザID
320 暗号鍵
330 DVR ID
340 イベントリストポインタ
350 イベントリスト
360 イベント記録
370 時間フィールド
380 チャンネルフィールド
390 時間長フィールド
500 GUI
505 テーブル
510 列
515 行
520 上にスクロール
525 下にスクロール
530 前に調節
535 後ろに調節
710 コンテンツサーバ記述(CSD)データベース
720 コンテンツサーバ
730 メディアレコーダー
740 コンテンツデータベース
750 DHCPサーバ
760 携帯型DVR
770 転送先DVR
801 リプレイバー
802 緑の領域
803 再生速度
901 デジタル証明書
902 名前
903、905 シリアル番号
904、906 公開鍵
907 有効期限
908 デジタル署名
1001 家庭
1002 メディアサーバ
1003、1004、1005 DVR
1006 サービスセンター
1007 インターネット
1101、1102 DVR
1103、1104 ローカルキャッシュ
1204、1206 鍵フィールド
1301 サーバ
1302 DVRの記録
1303 DVR
1304 ユーザ
1401 DVR
1402 ドメイン名リダイレクタ
1403、1404、1405 サードパーティサーバ
1501 コンテンツサーバ
1502 DVR
1503、1504、1505 DVR
1601 「再生中(Now Playing)」画面
1602 ラベル
1701 コンテンツ画面
1702 名前
1801 転送オプション画面
1802 「開始位置(Start From)」オプション
1901 番組情報画面
1902 「再生(Play)」オプション
1903 「転送停止(Stop transfer)」オプション
2001 ミュージックコンテンツ画面
2101 写真コンテンツ画面
2201 家庭用DVRセットアップ
2202 メディアサーバ
2203 DVR
2204 作成者
2205 インターネット
2301 家庭用DVRセットアップ
2302 メディアサーバ
2303 DVR
2304 作成者
2305 インターネット
2306 コンテンツサーバ
Claims (11)
- デジタルビデオレコーダー(DVR)を使用してマルチメディアコンテンツを共有する方法であって、前記方法が、コンピュータによって実施される以下のステップ、すなわち、
オーディオコンテンツ、ビデオコンテンツ、及び写真コンテンツの1個以上を含むコンテンツファイルを含む電子メールを、メディアサーバで受信するステップと、
前記メディアサーバ上の前記電子メールから前記コンテンツファイルをユーザが選択すると、前記メディアサーバが、前記電子メールからの前記コンテンツファイルを処理するステップであって、前記電子メールからの前記コンテンツファイルを処理するステップが、前記電子メールからの前記コンテンツファイルについての情報をコンテンツデータベースに加えることを備える、ステップと、
前記メディアサーバが、前記電子メールからの前記コンテンツファイルを含む利用可能なコンテンツに関連するメタデータを、前記DVRに送信するステップと、
前記DVRが、前記メディアサーバから、前記コンテンツデータベースに格納されている前記コンテンツファイルを要求するステップと、
前記DVRが、前記ユーザに前記コンテンツファイルを再生または表示するステップと
を備える方法。 - 前記DVRが、前記メディアサーバから前記利用可能なコンテンツに関連する前記メタデータを要求する、請求項1に記載の方法。
- 前記コンテンツファイルに関連する前記メタデータを前記メディアサーバから前記DVRに送信するステップをさらに備える、請求項1に記載の方法。
- 前記メディアサーバが、前記コンテンツファイルを前記DVRにストリーミングする、請求項1に記載の方法。
- 前記DVRにより前記コンテンツデータベースから前記コンテンツファイルを受信するステップが、前記メディアサーバが前記コンテンツファイルを前記DVRにストリーミングすることを備え、
前記DVRが、前記コンテンツファイルに含まれているコンテンツを再生または表示し、かつ
前記DVRが、前記再生された又は表示されたコンテンツに、早送り、一時停止、巻戻し、再生、スロー再生、コマ送り、スライドショーの何れかを含むトリック再生機能を実行する、
請求項1に記載の方法。 - 前記コンテンツファイルが、前記サーバ上の前記1つまたは複数のコンテンツファイルへのファイルリンクを含んでいる場合に、前記DVRが、前記1つまたは複数のコンテンツファイルを検索するために前記インターネットにより直接サーバにアクセスし、
前記DVRが、前記1つまたは複数のコンテンツファイルの選択されたコンテンツファイルに含まれているコンテンツを再生または表示し、かつ
前記DVRが、前記再生または表示された選択されたコンテンツに、早送り、一時停止、巻戻し、再生、スロー再生、コマ送り、スライドショーの何れかを含むトリック再生機能を、実行する、
請求項1に記載の方法。 - 前記メディアサーバが、PC、DVRまたはコンテンツを処理することが出来る他の如何なる装置の何れかである請求項1に記載の方法。
- 前記DVRにより前記コンテンツデータベースから前記コンテンツファイルを受信するステップが、前記メディアサーバが、前記DVRに対し表示のために前記コンテンツファイルをストリーミングすることを備え、かつ前記DVRが、前記コンテンツファイルを格納せずに前記コンテンツファイル内のコンテンツを表示する、請求項1に記載の方法。
- デジタルビデオレコーダー(DVR)を使用してマルチメディアコンテンツを共有する装置であって、
請求項1−8の何れかに記載の方法を実行するように構成されている1個以上のデバイスを備える装置。 - デジタルビデオレコーダー(DVR)を使用してマルチメディアコンテンツを共有する装置であって、
メディアサーバと、
前記メディアサーバでのコンテンツデータベースと、
請求項1−8の何れかに記載の方法を実行する手段とを
備える装置。 - 請求項1−8の何れかに記載の方法を1個以上のデバイスに実行させるプログラムが格納された、コンピュータが読み出し可能な格納媒体。
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2004
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EP1694276A4 (en) | 2007-10-03 |
US10206010B2 (en) | 2019-02-12 |
EP2268023A3 (en) | 2012-10-03 |
EP1694276B1 (en) | 2010-07-28 |
ATE476058T1 (de) | 2010-08-15 |
CN101019429A (zh) | 2007-08-15 |
US20100175093A1 (en) | 2010-07-08 |
JP2007525742A (ja) | 2007-09-06 |
EP1694276A2 (en) | 2006-08-30 |
EP2268023A2 (en) | 2010-12-29 |
WO2005060660A2 (en) | 2005-07-07 |
US8171520B2 (en) | 2012-05-01 |
US20100169939A1 (en) | 2010-07-01 |
US10080063B2 (en) | 2018-09-18 |
US20050108769A1 (en) | 2005-05-19 |
HK1105149A1 (en) | 2008-02-01 |
WO2005060660A3 (en) | 2007-03-22 |
US20190124410A1 (en) | 2019-04-25 |
DE602004028407D1 (de) | 2010-09-09 |
CN101019429B (zh) | 2010-10-20 |
US20110093892A1 (en) | 2011-04-21 |
JP2011081814A (ja) | 2011-04-21 |
JP5600551B2 (ja) | 2014-10-01 |
PT1694276E (pt) | 2010-10-25 |
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