JP2008269614A - 提供装置および方法 - Google Patents
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Abstract
【解決手段】システムが、複数のソース・タイプ(208)からのトランスコーディングを行う複数のトランスコーダ(218)を含み、メディア・コンテントに対するトランスコーディング要求を受信し、トランスコーディング要求に応答してメディア・コンテントを取り込み、ソース・タイプ(208)および宛先タイプに基づいて複数のトランスコーダのうちの1つにメディア・コンテントを送信し、それによって、変換されたメディア・コンテントを生成し、変換されたメディア・コンテントが提供される。本発明は、例えば、メディア・コンテントのトランスコーディング・システムに適用することができる。
【選択図】図2
Description
本発明は、メディア情報を様々なソース・タイプから様々な宛先タイプにオン・デマンドで変換するシステムおよび方法に関する。本発明によれば、複数のソース・タイプから複数の宛先タイプへのトランスコーディングを行うトランスコーダを含むシステムにおいて、メディア・コンテントをソース・タイプから宛先タイプに変換する方法が提供される。この方法は、メディア・コンテントに対するトランスコーダ要求を受信する段階と、メディア・コンテントを取り込む段階と、複数のトランスコーダのうちの選択された1つにメディア・コンテントを送信する段階とを含んでいる。トランスコーダは、ソース・タイプおよび宛先タイプに基づいて選択される。トランスコーダは、メディア・コンテントをソース・タイプから宛先タイプに変換し、それによって、変換されたメディア・コンテントを生成する。次いで、変換されたメディア・コンテントは送信される。
図1は、本発明のトランスコーディング・システムの動作環境の一例を示すブロック図である。動作環境例100が例示的な目的にのみ示されており、本発明を制限するものではないことを理解されたい。本明細書に記載された動作環境の他の実現態様は、本明細書に含まれる教示に基づいて当業者に明らかになろう。本発明は、このような他の実現態様に関する。
図2は、本発明の態様によるメディア・トランスコーディング・エンジン106のブロック図である。メディア・トランスコーディング・エンジン106は、ビューア・ウェブ・サーバ・インタフェース202、コンテント・プロバイダ・ウェブ・サーバ・インタフェース204、タスク・マネージャ206、リソース・マネージャ208、データベース210、変換済みキャッシュ212、マスタ・アーカイブ214、マシン・ファーム216と、マシン・ファーム216内のトランスコーダ・サーバ218、送信側サーバ220、およびストリーミング・サーバ222を含むいくつかの構成要素で構成されている。メディア・トランスコーディング・エンジン106の各構成要素はそれぞれ、図2の各構成要素を接続する矢印によって部分的に表される内部コンピュータ・ネットワークによって互いに動作可能に接続されている。コンピュータ・ネットワークは、同じサーバ上に共存する各構成要素を接続する1つまたは複数のコンピュータ・バスと、回路交換網および/またはパケット交換網ならびに無線網を含むがそれらに限らない各リモート構成要素を接続する任意の他の種類の通信インフラストラクチャとを含んでよい。ある態様では、メディア・トランスコーディング・エンジン106内で各構成要素を接続するネットワークにはローカル・エリア・ネットワーク(LAN)が含まれる。
本発明のある態様では、メディア・コンテントを符号化ファイルとして公開することも、ライブ・オーディオやビデオ・フィードのような連続的なデータ・ストリームとして供給することもできる。
本明細書で説明するように、本発明のある態様は、メディア・コンテントへのアクセスを求める視聴者の要求に応答して、メディア・コンテントのトランスコーディングをオン・デマンドで実行する。さらに、本発明のある態様は基本的に、メディア・コンテントが公開された後に、メディア・コンテント供給プロセスの一部として、メディア・コンテントの「リアルタイム」のトランスコーディングを実行する。本発明の特定の態様では、メディア・コンテントを見ることを求める要求がメディア・トランスコーディング・エンジン106に送信されしからメディア・コンテントがビューア・クライアント102に供給されるまでの遅延は約30秒以下である。しかし、本発明は、特定の供給時間に限らず、30秒よりも長いかまたは短い様々な供給時間を包含することができる。
上述のように、メディア・トランスコーディング・エンジン106は1つまたは複数のトランスコーダ218を含んでいる。トランスコーダ218はある種類のメディア・コンテント(本明細書ではソース・タイプと呼ぶ)から他の種類のメディア・コンテント(本明細書では宛先タイプと呼ぶ)に変換する。トランスコーディングにはいくつかの異なる変換動作を含めることができる。使用される特定の変換動作は、変換されるメディア・コンテントおよび関連する公開変数に依存する。本明細書で使用される公開変数とは、メディア・コンテントの様々な特性を指す。
表2乃至5 トランスコーダ動作例
本明細書では、本発明の方法およびシステムの態様例について説明した。他の個所で指摘したように、これらの態様例は、例示的な目的にのみ記載されており、制限的なものではない。当業者には、本明細書で説明した態様とわずかに異なるかまたは実質的に異なる他の態様が、本明細書に含まれる教示に基づいて明らかになろう。たとえば、当業者には、本発明のトランスコーディング・システムおよび方法がメディア・コンテントのみのトランスコーディングおよび供給に限らず、圧縮ファイル、電子ドキュメント、HTMLページ、XMLドキュメント、および複数のフォーマットで記憶し電子的に供給することのできる他の任意の情報を含むがそれらに限らないすべての種類の情報のトランスコーディングおよび供給も包含することが理解されよう。他の態様には、本発明の方法、システム、および構成要素のハードウェア実現態様、ソフトウェア実現態様、およびソフトウェア/ハードウェア実現態様が含まれるがそれらに限らない。このような他の態様は、本発明の範囲および趣旨の範囲内である。
上記には本発明の様々な態様について説明したが、これらの態様が一例としてのみ示されており、制限として示されているのではないことに理解されたい。当業者には、添付の特許請求の範囲に定義された本発明の趣旨および範囲から逸脱せずに各態様の形態および詳細に様々な変更を加えられることが理解されよう。したがって、本発明の範囲は、上述の例示的な態様によって制限されるべきではなく、添付の特許請求の範囲およびその均等物に従ってのみ定義すべきである。
Claims (6)
- クライアントから要求されるメディア・コンテントを提供する提供装置において、
前記メディア・コンテントを記憶する記憶手段と、
前記クライアントから前記メディア・コンテントの要求を受信すると共に要求された前記メディア・コンテントを提供する通信手段と、
前記クライアントからの要求に応答して、前記クライアントから要求されるメディア・コンテントを、前記記憶手段から取得する取得手段と、
前記メディア・コンテントのタイプをトランスコードするトランスコーダと、
前記クライアントから要求されたメディア・コンテントのタイプを判定する判定手段とを備え、
前記トランスコーダは、前記取得手段において取得されたメディア・コンテントを、前記判定手段において判定されたタイプのトランスコーダにおいて、トランスコードを実行し、
前記通信手段において、前記トランスコーダにおいてトランスコードされたメディア・コンテントを、前記クライアントに提供する
ことを特徴とする提供装置。 - メディア・コンテントのタイプは、少なくとも、
(1)メディア・コンテントのファイル・フォーマット、
(2)メディア・コンテントのビット・レート、
(3)メディア・コンテントを記憶するための圧縮アルゴリズム、
(4)メディア・コンテントを転送するための通信プロトコル、
(5)メディア・コンテントを記憶する物理メディア、
(6)圧縮アルゴリズム、
(7)デジタル権利管理情報、または、
(8)これらの組み合わせの内一つを含むことを特徴とする請求項1に記載の提供装置。 - 前記クライアントから要求されるタイプは、前記メディア・コンテントを再生するソフトウェアによって判定されることを特徴とする請求項1に記載の提供装置。
- メディア・コンテントを記憶する記憶手段と、
クライアントから前記メディア・コンテントの要求を受信すると共に要求された前記メディア・コンテントを提供する通信手段と、
前記クライアントからの要求に応答して、前記クライアントから要求されるメディア・コンテントを、前記記憶手段から取得する取得手段と、
前記メディア・コンテントのタイプをトランスコードするトランスコーダと、
前記クライアントから要求されたメディア・コンテントのタイプを判定する判定手段とを備える提供装置の前記クライアントから要求されるメディア・コンテントを提供する提供方法であって、
サーバにおいて、前記クライアントからメディア・コンテントの要求を、前記通信手段を介して受信する受信ステップと、
前記要求に応答して、前記クライアントの要求するメディア・コンテントを、前記記憶手段から、取得する取得ステップと、
前記クライアントから要求されたメディア・コンテントのタイプに従って、取得した前記メディア・コンテントをトランスコーダにおいてトランスコードするトランスコードステップと、
前記トランスコーダにおいてトランスコードされたメディア・コンテントを、前記クライアントに前記通信手段を介して提供する提供ステップと
を含むことを特徴とする提供方法。 - メディア・コンテントのタイプは、少なくとも、
(1)メディア・コンテントのファイル・フォーマット、
(2)メディア・コンテントのビット・レート、
(3)メディア・コンテントを記憶するための圧縮アルゴリズム、
(4)メディア・コンテントを転送するための通信プロトコル、
(5)メディア・コンテントを記憶する物理メディア、
(6)圧縮アルゴリズム、
(7)デジタル権利管理情報、または、
(8)これらの組み合わせの内一つを含む
ことを特徴とする請求項4に記載の提供方法。 - 前記クライアントから要求されるタイプは、前記メディア・コンテントを再生するソフトウェアによって判定される
ことを特徴とする請求項4に記載の提供方法。
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JP2011007255A Pending JP2011108261A (ja) | 2000-12-22 | 2011-01-17 | コンテント情報提供装置および方法、クライアントおよびその情報処理方法、並びにプログラム |
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JP2013234816A Pending JP2014075136A (ja) | 2000-12-22 | 2013-11-13 | 情報処理装置、および情報処理方法、並びに情報処理システム |
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CN101594518A (zh) | 2009-12-02 |
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CN102427563A (zh) | 2012-04-25 |
EP1356594A4 (en) | 2006-02-22 |
KR20030075155A (ko) | 2003-09-22 |
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US20040032348A1 (en) | 2004-02-19 |
CN101594518B (zh) | 2012-08-01 |
WO2002052730A1 (en) | 2002-07-04 |
JP2015172938A (ja) | 2015-10-01 |
US7924177B2 (en) | 2011-04-12 |
CN1488195A (zh) | 2004-04-07 |
EP2683173A1 (en) | 2014-01-08 |
US9276984B2 (en) | 2016-03-01 |
US20160142460A1 (en) | 2016-05-19 |
US20110140937A1 (en) | 2011-06-16 |
US6407680B1 (en) | 2002-06-18 |
JP5120943B2 (ja) | 2013-01-16 |
KR100897967B1 (ko) | 2009-05-18 |
JP2014075136A (ja) | 2014-04-24 |
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