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1、 ANSI/CEA Standard OpenEPG A Specification for Electronic Program Guide Data Interchange ANSI/CEA-2033 March 2008 Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permi
2、tted without license from IHS -,-,- NOTICE Consumer Electronics Association (CEA) Standards, Bulletins and other technical publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvemen
3、t of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards, Bulletins and other technical publications shall not in any respect preclude any member or nonmember of CEA from manufacturing or selling
4、products not conforming to such Standards, Bulletins or other technical publications, nor shall the existence of such Standards, Bulletins and other technical publications preclude their voluntary use by those other than CEA members, whether the standard is to be used either domestically or internat
5、ionally. Standards, Bulletins and other technical publications are adopted by CEA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, CEA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting t
6、he Standard, Bulletin or other technical publication. This CEA Standard is considered to have International Standardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the CEA Standard and the IEC document c
7、an be made. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory lim
8、itations before its use. (Formulated under the cognizance of the CEAs R7 Home Network Committee.) Published by CONSUMER ELECTRONICS ASSOCIATION 2008 Technology to video on demand (VOD) services; and to content stored locally on a home networked device. OpenEPG allows for aggregation of metadata prov
9、ided by multiple sources such as various metadata service providers (MSPs,) including small and local MSPs (such as churches, schools, etc.), and personal metadata for content provided by a user. This standard defines the format and structure of OpenEPG data fields, and it defines methods of queryin
10、g OpenEPG metadata services to request subsets of the available data. Electronic versions of the complete OpenEPG XML schemas and example files can be obtained from CEA 24. This standard leverages the field structures used in the TVAnytime field set, but extends their use for the North American broa
11、dcast, cable and satellite infrastructure and conventions. This standard uses other common field structures, such MPEG-7, to the fullest extent possible. 1.2 General Capabilities This standard enables the following capabilities: Enables devices to communicate using messages based upon IP protocols.
12、Provides mechanisms that enable applications to tune to content. Provides mechanisms that enable applications to record content. Limits complexity to allow small providers to create and define program metadata elements. Provides alignment with existing DLNA architecture for in-home network device in
13、teraction. Provides methods of filtering EPG data for a particular geographical area (“localization”) Provides optional methods for user and/or device authentication and secure data communications with the EPG MSP. The following capabilities have been identified for future consideration. OpenEPG is
14、a trade mark owned by the Consumer Electronics Association (CEA). Use of this term in descriptions of products or services conforming to this standard is permissible as long as it is accompanied by attribution. Copyright Consumer Electronics Association Provided by IHS under license with CEA License
15、e=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-2033 2 Methods that facilitate alternate business models for EPG MSPs, e.g. a method of preserving advertising content. 1.3 Background and Usage Models The OpenEPG
16、 specification enables the exchange of media-content metadata between MSPs and CE equipment, and between devices on a home network through standardized formats and protocols. The goal of the OpenEPG initiative is to stimulate innovation in the applications and user experiences that utilize this meta
17、data and to encourage the development of a robust set of products and services that can help users navigate and enjoy the increasingly diverse media content that is now becoming available to them. In formulating the requirements for this specification, two classes of OpenEPG use-case were considered
18、 Direct Access and Indirect Access. Figure 1 illustrates a typical Direct Access scenario: Figure 1 - Typical Direct Access Scenario Terrestrial TV Broadcaster ABroadcaster B CATV Service OpenEPG Service Metadata Service Provider Internet OpenEPG Service Copyright Consumer Electronics Association Pr
19、ovided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-2033 3 The user owns multiple digital televisions (DTVs), subscribes to a Cable TV service, and receives over-the-air t
20、elevision programming from multiple broadcasters. The DTVs are IP- enabled and are connected to a broadband Internet service via a home network. The user has also subscribed to an OpenEPG metadata service provided by a Metadata Service Provider (MSP). The user can access the MSP service directly fro
21、m each DTV in the home. (Subscription mechanisms are outside the scope of this standard.) The MSPs OpenEPG service delivers detailed EPG metadata for content available from the Cable TV service or the OTA broadcasts. Additional content sources, delivery technologies, and types of CE device can be ac
22、commodated, and the user may subscribe to more than one OpenEPG metadata service. (In this case, another application would aggregate the metadata for display to the user). The user browses the received EPG metadata to make current and future viewing decisions, and may use it to facilitate scheduled
23、recording of selected programs. Figure 2 shows a typical Indirect Access scenario: Figure 2 Typical Indirect Access Scenario SATV Provider Supporting OpenEPG Content and OpenEPG Compatible Metadata Service SATV over the Home Network w/ OpenEPG Service Multi-stream, Network-Enabled Receiver/Server w/
24、 OpenEPG Support Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-2033 4 In this particular scenario, the user owns multipl
25、e digital televisions (DTVs), and subscribes to a digital satellite service (DSS) that supports home networking features and OpenEPG. The DTVs are IP-enabled and are connected to the DSS receiver via the home network. Both media content and metadata flows from the service provider to the DSS receive
26、r and is delivered to each of the DTVs via IP transport over the home network. The user browses the metadata to make current and future viewing decisions and optionally uses the metadata to facilitate scheduled recording of selected programs. The OpenEPG metadata service provides event information a
27、s well as detailed metadata. Note that additional content receivers (renderers and/or storage devices), delivery technologies (additional satellite, OTA, or cable), and other types of CE devices could also be accommodated, and the user could receive metadata from more than one MSP. In the latter cas
28、e, an application would aggregate the metadata for display to the user. Scenarios that combine direct and indirect access methodologies can also be envisioned where applications on the CE device aggregate the metadata to provide a rich user experience. 1.4 Principles of Operation See Figure 3 for an
29、 illustration of how OpenEPG is used in both direct and indirect access scenarios. Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permitted without license from IHS -
30、,-,- CEA-2033 5 Figure 3 Flow of Direct and Indirect Access Scenarios Copyright Consumer Electronics Association Provided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-2033
31、 6 2 References 2.1 Normative References The following standards contain provisions that, through reference in this text, constitute normative provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements
32、based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed. 1 ATSC Standard A/65C Program and System Information Protocol for Terrestrial Broadcast and Cable, Rev. C, with Amendment No. 1, May 9, 2006 (http:/www.atsc.org/standard
33、s/a_65cr1_with_amend_1.pdf) 2 CEA-CEB16 Active Format Description (AFD) Part 2: System Description, January 2006 7 ETSI TS 102 822-3-1 Title: Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime“); Part 3: Metadata; Sub-part 1: Phase 1
34、- Metadata schemas, January 2006 8 ETSI TS 102 822-6-1 Title: Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime Phase 1“); Part 6: Delivery of metadata over a bi-directional network; Sub-part 1: Service and transport, January 2006 9
35、ETSI TS 102 822-6-2 (2006-01) Title: Broadcast and On-line Services: Search, select, and rightful use of content on personal storage systems (“TV-Anytime Phase 1“); Part 6: Delivery of metadata over a bi-directional network; Sub-part 2: Service discovery, January 2006 10 IETF RFC 2616, HyperText Tra
36、nsfer Protocol HTTP 1.1, June 1999 11 IETF RFC 2617 HTTP Authentication: Basic Digest Access Authentication, June 1999 12 IETF RFC 4646 Tags for Identifying Languages, February 2006 13 IETF RFC 4078 The TV-Anytime Content Reference Identifier (CRID), May 2005 14 IETF RFC 4246 International Standard
37、Audio Visual Number (ISAN) URN Definition, February 2006 15 ISO 15706:2002 Information and Documentation - International Standard Audiovisual Number (ISAN) 16 ISO 639-1:2002 Codes for the representation of names of languages - Part 1: Alpha-2 code, Copyright Consumer Electronics Association Provided
38、 by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-2033 7 17 ISO 639-2:2007 Codes for the representation of names of languages - Part 2: Alpha-3 code for comprehensive coverage
39、 of languages 18 ISO/IEC 15938:2005 Information technology - Multimedia Content Description Interface, Parts 1-10 (MPEG-7) 19 ISO/IEC 15938-5:2003, Information Technology - Multimedia Content Description Interface - Part 5: Multimedia Description Schemes. 20 W3C Recommendation 24 December 1999, HTML
40、 4.01 specification, http:/www.w3c.org/TR/1999/REC-html401-19991224 21 W3C Recommendation 24 June 2003, SOAP Version 1.2 Part 1: Messaging Framework 22 “Extensible Markup Language (XML) 1.0 (Fourth Edition) W3C Recommendation 16 August 2006, edited in place 29 September 2006” http:/www.w3.org/TR/200
41、6/REC-xml-20060816/ 2.2 Informative References 23 ETSI EN 300 468, Edition: 1.7.1(2006-05) Specification for Service Information (SI) in DVB systems (DVB SI) (http:/webapp.etsi.org/action/PU/20060523/en_300468v010701p.pdf) 24 Electronic versions of the complete OpenEPG XML Schemas and Example Files
42、2.3 Reference Acquisition ATSC Standards: 1750 K Street, NW, Suite 1200, Washington DC, 20006 USA, Phone: +1-202-872-9160, Fax: +1-202-872-9161, Internet: Email: http:/www.atsc.org/, atscatsc.org CEA Standards: Global Engineering Documents, World Headquarters, 15 Inverness Way East, Englewood, CO US
43、A 80112-5776; Phone 800-854-7179; Fax 303-397-2740; Internet http:/ ; E-mail CEA-2033 OpenEPG XML Schemas and Example files: Consumer Electronics Association, 1919 South Eads Street, Arlington, VA USA 22202; Phone 703-907-7625; Fax 703-907-7693; Internet www.CE.org ; E-mail standardsCE.org DLNA Doc
44、uments: Digital Living Network Alliance (DLNA) Administration, C/O VTM, Attn: Membership Services. 5440 SW Westgate Drive, Suite217, Portland, OR 97221 USA Phone: 503.297.0426, Fax: 503.297.1090, Internet: http:/www.dlna.org/ , Email: admindlna.org ETSI Standards: Copyright Consumer Electronics Asso
45、ciation Provided by IHS under license with CEA Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 05:30:17 MDTNo reproduction or networking permitted without license from IHS -,-,- CEA-2033 8 ETSI Secrtariat, 650, route des Lucioles, 06921 Sophia-Antipolis Cedex, FRANCE, Tel.: +33 (0)4 92 94 4
46、2 00, Fax: +33 (0)4 93 65 47 16, Internet: http:/www.etsi.org/#, Email: helpdesketsi.org IETF Documents: Internet Engineering Task Force (IETF) Secretariat, c/o Corporation for National Research Initiatives, 1895 Preston White Drive, Suite 100, Reston, VA 20191-5434, USA; Phone 703- 620-8990; Fax 70
47、3-620-9071; Internet www.ietf.org, IETF RFCs may be downloaded from www.ietf.org/rfc.html, IETF Internet drafts may be downloaded from www.ietf.org/ID.html ISO Standards ISO Central Secretariat: International Organization for Standardization (ISO); 1, rue de Varemb, Case postale 56; CH-1211 Geneva 2
48、0, Switzerland; Telephone +41 22 749 01 11; Fax +41 22 733 34 30; http:/www.iso.org W3C Documents: World Wide Web Consortium (W3C); Internet: http:/www.w3.org/ 3 Conventions and Definitions 3.1 Conventions Several keywords are used to differentiate levels of requirements and optionality, as follows: MAY: A keyword that indicates flexibility of choice with no im