JP2010246146A - コンテンツ受信機 - Google Patents
コンテンツ受信機 Download PDFInfo
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- JP2010246146A JP2010246146A JP2010134744A JP2010134744A JP2010246146A JP 2010246146 A JP2010246146 A JP 2010246146A JP 2010134744 A JP2010134744 A JP 2010134744A JP 2010134744 A JP2010134744 A JP 2010134744A JP 2010246146 A JP2010246146 A JP 2010246146A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17345—Control of the passage of the selected programme
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
- H04L1/1678—Details of the supervisory signal the supervisory signal being transmitted together with control information where the control information is for timing, e.g. time stamps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/637—Control signals issued by the client directed to the server or network components
- H04N21/6375—Control signals issued by the client directed to the server or network components for requesting retransmission, e.g. of data packets lost or corrupted during transmission from server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17318—Direct or substantially direct transmission and handling of requests
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
【解決手段】送信側は再生時刻情報を個々のトランスポートパケットに付加した拡張トランスポートパケットをカプセル化しカプセルカウンタ情報を付加して送信する。受信側は蓄積手段を備えており、パケットロスの場合には前記カプセルカウンタ情報を含む再送要求を送信側に送出する。また、受信側は再送データを受信後に本来の蓄積領域に上書する。また、受信側は再生の際は再生時刻情報を参照しジッター補償した後デコードする。
【選択図】図1
Description
プと、カプセル化された情報がMPEG2−TSPであることを識別する情報とを含んだヘッダーを出力信号に付加して、後段に出力する。この出力信号を図10のS12に示す。また、S12のRTPはヘッダーである。このタイムスタンプは、受信側でパケット到着時にバスクロックを用いてジッタ−を補正するときに使用する。
とで任意の方式への対応が可能である。
図1は実施の形態1によるコンテンツ送信器の構成を示す図である。図5は実施の形態1によるコンテンツ送信器と、コンテンツ受信器におけるパケット構成の推移を示す図である。図6は実施の形態1によるパケットの構成を示す図である。
STEP75)。そして、その差分が再生制御機33内部のバッファー(図示せず)でジッター補償できる範囲であれば拡張TSパケットはバッファー上で待機させる。その差分が、再生制御機内部のバッファーでジッター補償できる範囲を超える場合は、該当する拡張TSパケットを廃棄するよう制御する(図4のSTEP76)。
ある。したがって、拡張TSパケットのデータサイズは192バイトとなり、イーサネット(登録商標)通信網におけるMTU1500バイトを満たしながらスーパーカプセルに格納できる拡張トランスポートパケット数は最大7つとなる。
図12は実施の形態2によるコンテンツ送信器の構成を示す図である。図13は実施の形態2によるIEEE1394インターフェースの構成を示す図である。図14は実施の形態2によるコンテンツ受信器でのパケット構成の推移を示す図である。図15と図16は実施の形態2によるIEEE1394インターフェースが送信するパケットの構成を示す図である。
ーである。読み出し制御器36とIEEE1394インターフェース38間の伝送信号は、MPEG2−TSと同様にデータ信号、クロック信号、パケットスタート信号、データイネーブル信号で構成される。また、拡張TSパケットを送信する際に、IEEE1394インターフェース38にはマイコンにより拡張TSパケット情報が設定される。これについて説明する。
2 オーディオエンコーダー
3 データエンコーダー
4 システムクロック生成器
5 ストリーム多重器
6 スクランブラ
7 タイムスタンプ付加器
8 スーパーカプセル化器
9 UDP/IPパケット化器
10 イーサネット(登録商標)パケット化器
11 送信機
12 受信機
13 再送コマンド検出器
14 マイコン
15 蓄積バッファー
21 受信器
22 イーサネット(登録商標)パケット処理器
23 UDP/IPパケット処理器
24 カプセル処理器
25 デスクランブラ
26 タイムスタンプバッファー
27 拡張TS再生器
28 蓄積制御器
29 マイコン
31 送信器
32 蓄積デバイス
33 再生制御器
34 TSデコーダー
35 AVデコーダー
36 読み出し制御器
37 拡張TSパケット読み出しクロック生成器
38 IEEE1394インターフェース
41 MPEG2インターフェース
42 DTCP暗号化回路
43 ヘッダー付加回路
44 パケットフォーマット情報付加回路
45 パケットデータサイズ情報付加回路
46 ホストインターフェース
47 IEEE1394パケット送出回路
Claims (1)
- エンコードされたMPEG−2TSパケットから構成されるストリームにより形成されるコンテンツをインターフェースから受信し、再生するコンテンツ受信器において、前記コンテンツを受信した後に蓄積する蓄積手段と、MPEGシステムクロックを再生するシステムクロック再生手段と、前記システムクロック再生手段の出力するMPEGシステムクロックを計数し計数値を算出する第1の計数手段と、前記蓄積手段に蓄積された前記コンテンツを再生するデコーダとを備え、前記システムクロック再生手段は、前記デコーダから出力されるPCR信号と前記第1の計数手段の計数した値とを比較した結果が等しくなるようにMPEGシステムクロックを再生し、受信するコンテンツを形成する各々のMPEG−2TSパケットが、前記MPEG−2TSパケットのエンコード時におけるMPEGシステムクロックのカウント値を4バイトのタイムスタンプとして付加した拡張TSパケットである場合に、前記蓄積手段に蓄積された各々の前記拡張TSパケットを、前記第1の計数手段の計数値と前記タイムスタンプが所定のオフセット値になるタイミングに前記デコーダへ出力し、
さらに前記デコーダからストリームを出力するためのインターフェースとを備え、前記拡張TSパケットから構成されるストリームを伝送パケットとして前記インターフェースを介して外部出力し、
前記伝送パケットは、前記拡張TSパケットから構成されるストリームにヘッダーを付けたパケットであることを特徴とするコンテンツ受信機。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010134744A JP4666110B2 (ja) | 2002-07-16 | 2010-06-14 | コンテンツ受信機 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002206780 | 2002-07-16 | ||
JP2010134744A JP4666110B2 (ja) | 2002-07-16 | 2010-06-14 | コンテンツ受信機 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007332073A Division JP4561822B2 (ja) | 2002-07-16 | 2007-12-25 | コンテンツ受信機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010246146A true JP2010246146A (ja) | 2010-10-28 |
JP4666110B2 JP4666110B2 (ja) | 2011-04-06 |
Family
ID=30112803
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004521223A Expired - Lifetime JP4042745B2 (ja) | 2002-07-16 | 2003-07-16 | コンテンツ受信器 |
JP2010134745A Expired - Fee Related JP5170166B2 (ja) | 2002-07-16 | 2010-06-14 | コンテンツ受信機 |
JP2010134744A Expired - Lifetime JP4666110B2 (ja) | 2002-07-16 | 2010-06-14 | コンテンツ受信機 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004521223A Expired - Lifetime JP4042745B2 (ja) | 2002-07-16 | 2003-07-16 | コンテンツ受信器 |
JP2010134745A Expired - Fee Related JP5170166B2 (ja) | 2002-07-16 | 2010-06-14 | コンテンツ受信機 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7830881B2 (ja) |
EP (1) | EP1553774B1 (ja) |
JP (3) | JP4042745B2 (ja) |
KR (2) | KR100709484B1 (ja) |
CN (1) | CN1669320B (ja) |
AU (1) | AU2003281136A1 (ja) |
WO (1) | WO2004008760A1 (ja) |
Cited By (5)
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JP2013013082A (ja) * | 2011-06-29 | 2013-01-17 | Harman Internatl Ind Inc | ネットワークメディアアダプタ |
JP2015507407A (ja) * | 2011-12-28 | 2015-03-05 | インテル コーポレイション | ビデオエンコーディングシステムにおける集積メタデータ挿入システム及び方法 |
JP2015510349A (ja) * | 2012-02-10 | 2015-04-02 | ブリティッシュ・ブロードキャスティング・コーポレーションBritish Broadcasting Corporation | オーディオ信号、ビデオ信号、および制御信号を変換するための方法および装置 |
JP2015139157A (ja) * | 2014-01-23 | 2015-07-30 | 株式会社メディアグローバルリンクス | 放送信号ip伝送システムおよび放送信号ip伝送方法 |
US9313253B2 (en) | 2011-06-08 | 2016-04-12 | Sony Corporation | Communication apparatus, communication system, communication method, and program |
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JP5101965B2 (ja) * | 2007-09-25 | 2012-12-19 | 京セラ株式会社 | 受信装置 |
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JP5101967B2 (ja) * | 2007-09-26 | 2012-12-19 | 京セラ株式会社 | 受信装置 |
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US20110023078A1 (en) | 2011-01-27 |
KR100709484B1 (ko) | 2007-04-20 |
EP1553774A1 (en) | 2005-07-13 |
CN1669320B (zh) | 2011-03-23 |
US8503471B2 (en) | 2013-08-06 |
AU2003281136A1 (en) | 2004-02-02 |
KR20060132017A (ko) | 2006-12-20 |
JP4666110B2 (ja) | 2011-04-06 |
JP4042745B2 (ja) | 2008-02-06 |
CN1669320A (zh) | 2005-09-14 |
KR20050025607A (ko) | 2005-03-14 |
JP2010226766A (ja) | 2010-10-07 |
KR100784874B1 (ko) | 2007-12-14 |
US7830881B2 (en) | 2010-11-09 |
EP1553774B1 (en) | 2019-03-13 |
US20050237434A1 (en) | 2005-10-27 |
EP1553774A4 (en) | 2011-05-25 |
JP5170166B2 (ja) | 2013-03-27 |
JPWO2004008760A1 (ja) | 2005-11-17 |
WO2004008760A1 (ja) | 2004-01-22 |
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