JP4888263B2 - 受信装置、受信方法およびコンピュータプログラム - Google Patents
受信装置、受信方法およびコンピュータプログラム Download PDFInfo
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- JP4888263B2 JP4888263B2 JP2007188181A JP2007188181A JP4888263B2 JP 4888263 B2 JP4888263 B2 JP 4888263B2 JP 2007188181 A JP2007188181 A JP 2007188181A JP 2007188181 A JP2007188181 A JP 2007188181A JP 4888263 B2 JP4888263 B2 JP 4888263B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1859—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast adapted to provide push services, e.g. data channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
- H04L12/1877—Measures taken prior to transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Description
まず、本発明の第1の実施形態にかかる受信装置および受信装置を用いた受信方法について説明する。
本発明の第1の実施形態では、マルチキャストMACアドレスの設定を予め行っておくことで、受信装置におけるNICフィルタでのパケットのフィルタリングを省略し、切り替え時間を短縮するチャンネル切り替えの高速化について説明した。本発明の第2の実施形態では、コンテンツを受信する受信装置が同一セグメント内(例えば家庭内)に複数存在する場合におけるチャンネル切り替えの高速化について説明する。
14 ルータ
100 受信装置
110 通信部
112 物理アドレス記憶部
114 物理アドレス設定部
120 制御部
122 ストリーミング受信部
124 デクリプタ
126 デマルチプレクサ
128 映像デコーダ
130 音声デコーダ
132 字幕デコーダ
134 BMLブラウザ
136、138 加算部
140 CAS/DRMクライアント
220 ホームゲートウェイ
230 パーソナルコンピュータ
240 DVDレコーダ
250 ハードディスクレコーダ
260 テレビ
Claims (4)
- 少なくとも1の上位ルータおよび複数の下位ルータを介して、コンテンツをマルチキャスト配信する複数の配信サーバから配信される、前記コンテンツを受信する受信装置であって、
前記複数の配信サーバが配信するコンテンツに対応するマルチキャストMACアドレスを該配信サーバからのコンテンツ受信前に予め設定する物理アドレス設定部と;
前記物理アドレス設定部で予め設定したマルチキャストMACアドレスを記憶する物理アドレス記憶部と;
前記物理アドレス設定部で予め設定し、前記物理アドレス記憶部に記憶したマルチキャストMACアドレスを用いて前記配信サーバから受信するコンテンツを切り替えるコンテンツ切換部と;
を含み,
前記コンテンツ切換部は、受信するコンテンツを切り替える前に、同一ネットワークセグメント内に切り替え先のコンテンツのデータが流れているか確認することを特徴とする、受信装置。 - 前記物理アドレス設定部は、SI(Service Information)ストリームに含まれるマルチキャストアドレスからマルチキャストMACアドレスを設定することを特徴とする、請求項1に記載の受信装置。
- 少なくとも1の上位ルータおよび複数の下位ルータを介して、コンテンツをマルチキャスト配信する複数の配信サーバから配信される、前記コンテンツを受信する受信方法であって、
前記複数の配信サーバが配信するコンテンツに対応するマルチキャストMACアドレスを該配信サーバからのコンテンツ受信前に予め設定する物理アドレス設定ステップと;
前記物理アドレス設定ステップで予め設定したマルチキャストMACアドレスを記憶する物理アドレス記憶ステップと;
前記配信サーバから受信するコンテンツを切り替える前に同一ネットワークセグメント内に切り替え先のコンテンツのデータが流れているか確認してから、前記物理アドレス設定ステップで予め設定し、前記物理アドレス記憶ステップで記憶したマルチキャストMACアドレスを用いて前記配信サーバから受信するコンテンツを切り替えるコンテンツ切換ステップと;
を含むことを特徴とする、受信方法。 - 少なくとも1の上位ルータおよび複数の下位ルータを介して、コンテンツをマルチキャスト配信する複数の配信サーバから配信される、前記コンテンツの受信をコンピュータに制御させるコンピュータプログラムであって、コンピュータに、
前記複数の配信サーバが配信するコンテンツに対応するマルチキャストMACアドレスを該配信サーバからのコンテンツ受信前に予め設定する物理アドレス設定ステップと;
前記物理アドレス設定ステップで予め設定したマルチキャストMACアドレスを記憶する物理アドレス記憶ステップと;
前記配信サーバから受信するコンテンツを切り替える前に同一ネットワークセグメント内に切り替え先のコンテンツのデータが流れているか確認してから、前記物理アドレス設定ステップで予め設定し、前記物理アドレス記憶ステップで記憶したマルチキャストMACアドレスを用いて前記配信サーバから受信するコンテンツを切り替えるコンテンツ切換ステップと;
を含む処理を実行させることを特徴とする、コンピュータプログラム。
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JP2007188181A JP4888263B2 (ja) | 2007-07-19 | 2007-07-19 | 受信装置、受信方法およびコンピュータプログラム |
US12/174,979 US20090022154A1 (en) | 2007-07-19 | 2008-07-17 | Reception device, reception method, and computer-readable medium |
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JP2007188181A JP4888263B2 (ja) | 2007-07-19 | 2007-07-19 | 受信装置、受信方法およびコンピュータプログラム |
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JP2009027429A JP2009027429A (ja) | 2009-02-05 |
JP4888263B2 true JP4888263B2 (ja) | 2012-02-29 |
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