JP5236738B2 - デジタル放送受信装置及びデジタル放送受信方法 - Google Patents
デジタル放送受信装置及びデジタル放送受信方法 Download PDFInfo
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- JP5236738B2 JP5236738B2 JP2010532904A JP2010532904A JP5236738B2 JP 5236738 B2 JP5236738 B2 JP 5236738B2 JP 2010532904 A JP2010532904 A JP 2010532904A JP 2010532904 A JP2010532904 A JP 2010532904A JP 5236738 B2 JP5236738 B2 JP 5236738B2
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Classifications
-
- 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
-
- 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
-
- 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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
-
- 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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
-
- 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
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4432—Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server
-
- 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
- H04N21/64—Addressing
- H04N21/6405—Multicasting
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
Description
NTPは時刻情報サーバを階層的に構成し、情報を交換して時刻を同期するプロトコルであり、SNTPはこのNTPの仕様のうち複雑な部分を省略し、クライアントがサーバに正確な時刻を問い合わせる用途に特化しているものである。
SI(Service Information)とは、番組配列情報。番組選択の利便性のために規定された各種情報のことであり、SI専用ストリームとは、映像・音声を含まない特殊なトランスポートストリームを指す。IP放送の全チャンネル分のEITscheduleなどを一括して伝送するために用いる。
タイマを備え、IP放送を受信可能なデジタル放送受信装置において、新規にCDNに接続した後に取得されたCDN構成情報ファイルに記載されているPF構成情報ファイルに記載されているSI専用ストリーム情報に基づいて初期チャネルサーチ処理を、CDN構成情報ファイルに記載されているSNTPよる時間情報の取得処理と近いタイミングで行う制御部を有することで、SI専用ストリームの受信は、RTP(UDP)プロトコルにより行うため、SNTPによる時間情報の取得処理とは異なるプロトコルであることを利用して、ストリームと時刻情報とを同時に取得することができる。初期チャンネルサーチ時に時刻設定をも行うことにより、デジタル放送受信装置がIP放送を受信するときでも、視聴者には何の負担もあたえることなく、受信されるサービスを享受することが可能となる。
Claims (5)
- タイマを備え、IP放送を受信可能なデジタル放送受信装置であって、
新規にCDNに接続した後にPF構成情報ファイルとSNTP情報とを含むCDN構成情報ファイルを取得し、前記CDN構成情報ファイルにおける前記PF構成情報ファイルに記載されているSI専用ストリーム情報に基づいて、SI専用ストリームを、RTP(UDP)プロトコルにより受信し、前記CDN構成情報ファイルに前記RTP(UDP)プロトコルとは異なるプロトコルで記載されている前記SNTP情報を用いた時間情報の取得処理時に初期チャネルサーチ処理を行う制御部を有し、
前記制御部における前記初期チャネルサーチ及び前記時間情報の取得処理を、IP放送の有無の判断処理においてIP放送がある場合に行うことを特徴とするデジタル放送受信装置。 - 前記制御部は、
前記時間情報を前記タイマに反映させ、該タイマにおける時間情報に基づいて、デジタル放送波から取得する電子番組表情報を取得する処理を行うことを特徴とする請求項1に記載のデジタル放送受信装置。 - タイマを備え、IP放送を受信可能なデジタル放送受信装置における受信方法であって、
IP放送の有無を判定するステップと、
新規にCDNに接続した後にPF構成情報ファイルとSNTP情報とを含むCDN構成情報ファイルを取得し、前記CDN構成情報ファイルにおける前記PF構成情報ファイルに記載されているSI専用ストリーム情報に基づいてSI専用ストリームを、RTP(UDP)プロトコルにより受信し、初期チャネルサーチ処理を、前記CDN構成情報ファイルに記載されている前記RTP(UDP)プロトコルとは異なるプロトコルで記載されている前記SNTP情報を用いた時間情報の取得処理と近いタイミングで行うステップと、
を有し、
前記初期チャネルサーチ及び前記時間情報の取得処理を、前記判定するステップにおいてIP放送がある場合に行うことを特徴とする受信方法。 - 請求項3に記載の方法をコンピュータに実行させるためのプログラム。
- 請求項4に記載のプログラムを記録するコンピュータ読み取り可能な記録媒体。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010532904A JP5236738B2 (ja) | 2008-10-06 | 2009-10-05 | デジタル放送受信装置及びデジタル放送受信方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008260098 | 2008-10-06 | ||
JP2008260098 | 2008-10-06 | ||
PCT/JP2009/067346 WO2010041627A1 (ja) | 2008-10-06 | 2009-10-05 | デジタル放送受信装置及びデジタル放送受信方法 |
JP2010532904A JP5236738B2 (ja) | 2008-10-06 | 2009-10-05 | デジタル放送受信装置及びデジタル放送受信方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2010041627A1 JPWO2010041627A1 (ja) | 2012-03-08 |
JP5236738B2 true JP5236738B2 (ja) | 2013-07-17 |
Family
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Family Applications (1)
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JP2010532904A Expired - Fee Related JP5236738B2 (ja) | 2008-10-06 | 2009-10-05 | デジタル放送受信装置及びデジタル放送受信方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US8667537B2 (ja) |
EP (1) | EP2348727A4 (ja) |
JP (1) | JP5236738B2 (ja) |
CN (1) | CN102172041B (ja) |
BR (1) | BRPI0920035A2 (ja) |
MX (1) | MX2011003124A (ja) |
RU (1) | RU2011118345A (ja) |
WO (1) | WO2010041627A1 (ja) |
Families Citing this family (7)
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KR20080067475A (ko) * | 2007-01-16 | 2008-07-21 | 엘지전자 주식회사 | 인터넷을 이용한 디지털 방송 서비스 방법 및 시스템과디지털 방송 수신방법 및 수신기 |
CN102172041B (zh) * | 2008-10-06 | 2014-03-26 | 夏普株式会社 | 数字广播接收装置及数字广播接收方法 |
US8763048B2 (en) * | 2008-10-07 | 2014-06-24 | Sharp Kabushiki Kaisha | Digital broadcast receiver and reception method |
CN103875252A (zh) * | 2011-10-13 | 2014-06-18 | 三星电子株式会社 | 内容显示方法、内容同步方法、广播内容显示方法及显示装置 |
CN103974092B (zh) * | 2013-01-31 | 2018-05-15 | 中兴通讯股份有限公司 | 一种基于网络电视实现网络广播的方法、装置及网络电视 |
JP7352889B2 (ja) * | 2018-11-30 | 2023-09-29 | パナソニックIpマネジメント株式会社 | 放送受信装置、放送受信方法及びプログラム |
KR102643885B1 (ko) | 2018-12-11 | 2024-03-08 | 삼성전자주식회사 | 전자 장치 및 이의 제어방법 |
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2009
- 2009-10-05 CN CN200980139852.6A patent/CN102172041B/zh not_active Expired - Fee Related
- 2009-10-05 BR BRPI0920035A patent/BRPI0920035A2/pt not_active IP Right Cessation
- 2009-10-05 JP JP2010532904A patent/JP5236738B2/ja not_active Expired - Fee Related
- 2009-10-05 EP EP09819161A patent/EP2348727A4/en not_active Withdrawn
- 2009-10-05 RU RU2011118345/07A patent/RU2011118345A/ru not_active Application Discontinuation
- 2009-10-05 US US13/122,688 patent/US8667537B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP2348727A4 (en) | 2012-12-05 |
JPWO2010041627A1 (ja) | 2012-03-08 |
CN102172041B (zh) | 2014-03-26 |
US8667537B2 (en) | 2014-03-04 |
MX2011003124A (es) | 2011-04-21 |
EP2348727A1 (en) | 2011-07-27 |
WO2010041627A1 (ja) | 2010-04-15 |
CN102172041A (zh) | 2011-08-31 |
RU2011118345A (ru) | 2012-11-20 |
US20110197244A1 (en) | 2011-08-11 |
BRPI0920035A2 (pt) | 2015-12-15 |
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