Engineering:DVB-I
| List of digital television broadcast standards |
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| DVB standards (countries) |
| ATSC standards (countries) |
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| ISDB standards (countries) |
| DTMB standards (countries) |
| DMB standard (countries) |
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| Terrestial Frequency bands |
DVB-I is a Digital Video Broadcasting specification for Service Discovery and Programme Metadata,[1] first published by the DVB Project as DVB BlueBook A177 in June 2020[2][3][4] and as an ETSI standard TS 103 770 in November 2020.[5]
The DVB-I specification defines mechanisms to allow internet connected devices to discover sets of audiovisual services delivered through fixed and wireless internet protocol connections or broadcast networks.
The specification covers the signalling of radio or television services and audiovisual programming delivered over the internet in a way that is consistent with access to such services received over radio frequency networks using traditional cable, satellite, or terrestrial transmissions. It specifies metadata and mechanisms to present electronic programme guides and allows services delivered over diverse networks to accessed in a coherent and consistent manner. The DVB-I specification provides a method for national regulators or their representatives, operators and trademark licensors to offer a list of trusted, legitimate, authorized, or regulated services.
Technical description
Client
A DVB-I client may be integrated into the user interface of a device such as a television or set-top box or may be part of an application on devices such as a mobile phone or tablet.
Service
A DVB-I service is any service which may be discovered using the mechanisms defined in the specification, available using one or more delivery systems including DVB-DASH and traditional DVB cable, satellite, or terrestrial transmissions. A service may be received by devices without a broadcast tuner or coaxial connection, including mobile devices, or on devices with a traditional DVB-C/S/T/IPTV receiver or using SAT>IP. A service may only be accessible under certain conditions, such as location, rating restrictions, conditional access, or subscription package. It may be linear or on-demand, and may include audio, video, subtitle, or access components, and may have linked applications.
Service Instance
A DVB-I service instance refers to the delivery of a DVB-I service using a single delivery mechanism and provides related information to enable it to be accessed by a DVB-I client.
Service List
A DVB-I service list may list services from one or more content providers. A service list provider may manage the service list and provide service ordering and numbering information. The service list may be targeted at a particular platform brand, geographic region, language, or genre. Clients marketed under a particular platform brand may use a single service list for that platform. Clients may offer a selection of service lists and present the user with a view of services from only one service at any one time. Alternatively, clients may combine several service lists and present them, with or without filtering options.
Service List Registry
A DVB-I Service List Registry provides a DVB-I client with a list of one or more Service List Servers in response to a request that may include query parameters. A service list registry provides an HTTP endpoint at a known URL and in response to a request query returns a list of service entry points. A service list registry may be operated by or on behalf of various kinds of organisations, such as device manufacturers, national or regional regulators, an operator or platform brand, third-party service list aggregators, or as a central service list registry for all compatible clients, providing information on a wide set of service lists.
Service List Server
One or more servers may deliver a Service List to a DVB-I client. A Service List Server may aggregate service list fragments from multiple content or service providers.
Content Guide Server
One or more servers may respond to requests from a DVB-I client for content guide data. The content guide server or servers for an individual service are referenced in the service list entry for that service.
Stream Server
One or more servers may be involved in the delivery of audiovisual streams, including a Playlist Server, an MPD Server providing the Media Presentation Description for DVB-DASH services, and a Stream Server, including Multicast Gateways, that deliver DASH media segments to a DVB-I client.
See also
- Digital Video Broadcasting
- Service List Registry
References
- ↑ "Service Discovery and Programme Metadata for DVB-I - DVB". https://dvb.org/?standard=service-discovery-and-programme-metadata-for-dvb-i.
- ↑ Service Discovery and Programme Metadata for DVB-I: DVB Document A177 (Rev.1 ed.). DVB. 2020. https://dvb.org/wp-content/uploads/2019/11/A177r1_Service-Discovery-and-Programme-Metadata-for-DVB-I_July-2020.pdf.
- ↑ Service Discovery and Programme Metadata for DVB-I: DVB Document A177 (Rev.3 ed.). DVB. 2022. https://dvb.org/wp-content/uploads/2021/06/A177r3_Service-Discovery-and-Programme-Metadata-for-DVB-I_January-2022.pdf.
- ↑ Service Discovery and Programme Metadata for DVB-I: DVB Document A177 (Rev.4 ed.). DVB. 2022. https://dvb.org/wp-content/uploads/2022/01/A177r4_Service-Discovery-and-Programme-Metadata-for-DVB-I_Interim-Draft_TS-103-770-v121_September-2022.pdf.
- ↑ ETSI TS 103 770 V1.1.1 (2020-11): Digital Video Broadcasting (DVB); Service Discovery and Programme Metadata for DVB-I. ETSI. 2020. https://www.etsi.org/deliver/etsi_ts/103700_103799/103770/01.01.01_60/ts_103770v010101p.pdf.
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