JP5071842B2 - データ配信装置 - Google Patents
データ配信装置 Download PDFInfo
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- JP5071842B2 JP5071842B2 JP2006334233A JP2006334233A JP5071842B2 JP 5071842 B2 JP5071842 B2 JP 5071842B2 JP 2006334233 A JP2006334233 A JP 2006334233A JP 2006334233 A JP2006334233 A JP 2006334233A JP 5071842 B2 JP5071842 B2 JP 5071842B2
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11 データサーバ装置
12 データ送信部
13 E/O変換部
14 E/O変換器
16 電気ケーブル
17 光ケーブル
21,22,23 クライアント装置
60 データ配信装置
Claims (3)
- データサーバ装置と少なくとも2台のクライアント装置とが1本の伝送路で接続され、前記伝送路を経由して前記データサーバ装置から少なくとも2台の前記クライアント装置の各々に対してデータが配信されるデータ配信装置であって、
前記データサーバ装置はデータを送出するデータ送信手段と時刻同期用情報を生成・付加する電気/光変換手段を備え、前記伝送路は前記電気/光変換手段の出力端に接続される光伝送路であり、そして、少なくとも2台の前記クライアント装置の各々は個別の光スイッチを介して前記光伝送路に順次に接続されており、
前記光スイッチは、対応する前記クライアント装置側への接続状態と下流側の前記光伝送路側への接続状態のうちいずれかの接続状態になるように構成され、初期接続状態では、前記クライアント装置側に接続された状態にあり、
少なくとも2台の前記クライアント装置の各々は、前記データベース装置側から送られてくる前記データと前記時刻同期用情報を含む信号から前記時刻同期用情報を取り出すと共に、当該クライアント装置に対応する前記光スイッチの接続状態を前記クライアント装置側から下流側の前記光伝送路側に切り替える光スイッチ接続制御手段を備え、
少なくとも2台の前記クライアント装置では、前記光伝送路上の上流側の前記クライアント装置から、前記光スイッチ接続制御手段により、順次に光スイッチの接続状態を制御して前記時刻同期用情報を取得する、
ことを特徴とするデータ配信装置。 - 前記時刻同期用情報は、前記電気/光変換手段に備えられた時刻同期用信号生成回路によって生成される時刻信号であることを特徴とする請求項1記載のデータ配信装置。
- 前記時刻同期用情報は、前記電気/光変換手段に付設されたPCによって設定される時刻同期プロトコルであることを特徴とする請求項1記載のデータ配信装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2006334233A JP5071842B2 (ja) | 2006-12-12 | 2006-12-12 | データ配信装置 |
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JP2006334233A JP5071842B2 (ja) | 2006-12-12 | 2006-12-12 | データ配信装置 |
Publications (2)
Publication Number | Publication Date |
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JP2008148092A JP2008148092A (ja) | 2008-06-26 |
JP5071842B2 true JP5071842B2 (ja) | 2012-11-14 |
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JP2006334233A Active JP5071842B2 (ja) | 2006-12-12 | 2006-12-12 | データ配信装置 |
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JP (1) | JP5071842B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5467382B2 (ja) * | 2009-04-16 | 2014-04-09 | 大日精化工業株式会社 | 光路切替型光信号送受信装置および光信号送受信方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6165545A (ja) * | 1984-09-06 | 1986-04-04 | Oki Electric Ind Co Ltd | ノ−ドユニツト |
JPH0851395A (ja) * | 1994-08-03 | 1996-02-20 | Nippon Telegr & Teleph Corp <Ntt> | 光コンセント |
JP4555124B2 (ja) * | 2005-03-04 | 2010-09-29 | 日本電気通信システム株式会社 | 光アクセスネットワークにおける同期方法、光スイッチ装置、センタ装置、リモート装置、光アクセスシステム、光アクセスネットワーク、プログラム、及び記録媒体 |
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