1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T J.205 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Corrigendum 2 (10/2014) SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS Application for Interactive Digital Televis
2、ion Part 1 Requirements for an application control framework using integrated broadcast and broadband digital television Corrigendum 2 Recommendation ITU-T J.205 (2012) Corrigendum 2 Rec. ITU-T J.205 (2012)/Cor.2 (10/2014) i Recommendation ITU-T J.205 Requirements for an application control framewor
3、k using integrated broadcast and broadband digital television Corrigendum 2 Summary Corrigendum 2 to Recommendation ITU-T J.205 introduces changes to the definitions of the terms in clauses 3.2.26, 3.2.27, 3.2.28 and 3.2.29. The full text of the Recommendation is reproduced and the corrections are i
4、dentified with revision marks. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T J.205 2012-01-13 9 11.1002/1000/11474 1.1 ITU-T J.205 (2012) Cor. 1 2013-01-18 9 11.1002/1000/11858 1.2 ITU-T J.205 (2012) Cor. 2 2014-10-29 9 11.1002/1000/12329 _ * To access the Recommendation,
5、type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T J.205 (2012)/Cor.2 (10/2014) FOREWORD The International Telecommunication Union (ITU) is the United Nations s
6、pecialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on th
7、em with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-
8、T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used
9、 for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the
10、Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of a
11、ny party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Prope
12、rty Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, imp
13、lementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior writ
14、ten permission of ITU. Rec. ITU-T J.205 (2012)/Cor.2 (10/2014) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 1 4 Abbreviations and acronyms 3 5 Conventions 4 6 Motivation . 4 7 Integrated broadcast and
15、 broadband system analysis . 5 7.1 DTV services and IBB DTV services 5 7.2 Interactive content (applications) . 6 7.3 Delivery of application components . 6 7.4 Service associated IBB applications and stand-alone IBB applications 6 7.5 Service exclusive and service shared IBB applications . 7 8 Func
16、tional requirements for IBB DTV application control framework (ACF) 7 Bibliography. 20 Rec. ITU-T J.205 (2012)/Cor.2 (10/2014) 1 Recommendation ITU-T J.205 Requirements for an application control framework using integrated broadcast and broadband digital television Corrigendum 2 1 Scope This Recomme
17、ndation defines high-level requirements for an application control framework based on integrated broadcast and broadband (IBB) DTV services where broadcasters or cable operators are continually engaged with their network. This application control framework is intended to harmonize the behaviour and
18、the interaction of a variety of types of applications, provided by network agnostic delivery mechanisms, including applications that are broadcast-delivered, broadband-delivered, pre-installed, installed via an application repository, or home area network delivered. This Recommendation is intended t
19、o define a baseline for such an integrated application framework. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were vali
20、d. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations
21、is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T J.200 Recommendation ITU-T J.200 (2010), Worldwide common core Application environment for digital interactive television services. 3 Defi
22、nitions 3.1 Terms defined elsewhere None. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 application: Any active DTV service content aimed at end-user interaction. 3.2.2 application catalogue: Data structure listing available applications (interactive
23、 content). This data structure is local to the IBB DTV receiver, and describes the IBB applications installed on the IBB DTV receiver. 3.2.3 application catalogue user interface: A user interface functionality over the IBB DTV receiver, intended to allow the end user to browse the available applicat
24、ions in the application catalogue or to query application catalogues exposed by application repositories. Also, it lists applications that are currently available in the selected IBB DTV service or broadcast DTV service. 3.2.4 application component: A block of data that forms part of an application.
25、 Application component types are: code, resources, meta-data, control and user settings. 2 Rec. ITU-T J.205 (2012)/Cor.2 (10/2014) 3.2.5 application component delivery mechanism: A mechanism, channel or medium used to deliver application components to an IBB DTV receiver. 3.2.6 application control d
26、ata structure: Data structures transmitted within the integrated broadcast and broadband (IBB) DTV service to control IBB applications (e.g., AIT in b-GINGA-Data Transmission, b-MHP). 3.2.7 application install package: Application delivery mechanism in which several application components are bundle
27、d together in a single file. 3.2.8 application repository: Entity, reachable through the broadband channel, that provides access to integrated broadcast and broadband (IBB) applications contained in it. These IBB applications can be downloaded and installed on the IBB DTV receiver, manually, by the
28、end user, or, in case of being signalled within an IBB DTV service, launched or installed automatically under the IBB DTV services control using the IBB application control mechanism. An application repository can be managed by IBB service providers, IBB DTV receiver manufacturers, or other third pa
29、rty entities. 3.2.9 authorized IBB application provider: An entity allowed to develop and provide integrated broadcast and broadband (IBB) applications within a given implementation of an IBB digital television (DTV) system. 3.2.10 broadband channel: A medium used to deliver interactive content. Usu
30、ally this medium is based on the Internet and allows the delivery of non-linear and on-demand content. A broadband channel allows access to servers that may be located in the Internet. 3.2.11 broadcast channel: A medium used to deliver digital television (DTV) services. Examples: free to air, satell
31、ite and cable. 3.2.12 broadcast DTV service: Any digital television (DTV) service, delivered through a broadcast channel. 3.2.13 cable integrated broadcast and broadband DTV service: An integrated broadcast and broadband digital television (DTV) service managed by cable operators. 3.2.14 DTV service
32、: This is the unit for delivering audio-visual content to the end users. In a more extensive definition (the one adopted in this Recommendation), this unit also comprehends the delivery of interactive content. It constitutes an editorially consistent whole and it is an aggregation of different kinds
33、 of service components. 3.2.15 DTV service component: Each one of the audio, visual or interactive elements that compose a digital television (DTV) service. 3.2.16 DTV service component delivery mechanism: Used to refer to any mechanism, channel or medium to deliver digital television (DTV) service
34、components to an integrated broadcast and broadband (IBB) DTV receiver. 3.2.17 DTV service content: Audio/visual/interactive components delivered within a digital television (DTV) service as single editorially consistent whole. 3.2.18 IBB application: An Application that is meant to be handled and e
35、xecuted within an integrated broadcast and broadband (IBB) application control framework defined by this Recommendation. Such applications can have their application contents delivered using different application component delivery mechanisms. Rec. ITU-T J.205 (2012)/Cor.2 (10/2014) 3 3.2.19 IBB app
36、lication control mechanism: A mechanism used by integrated broadcast and broadband (IBB) digital television (DTV) service providers to signal and control IBB applications associated to their respective IBB DTV services. The mechanism contemplates the transmission of an IBB DTV services application c
37、ontrol data structure within the IBB DTV service. Such data structure can support the signalling of IBB applications that are retrievable from the broadcast channel or through the broadband channel from HTTP servers or application repositories. 3.2.20 IBB DTV receiver: A device capable of receiving
38、and displaying DTV Services as well as integrated broadcast and broadband (IBB) DTV services. 3.2.21 IBB DTV service provider: An entity (i.e., broadcasters) making available and delivering IBB DTV services. 3.2.22 IBB installable application: An integrated broadcast and broadband (IBB) application
39、that can be downloaded and saved onto the IBB DTV receivers persistent storage for later usage. 3.2.23 IBB resident application: An integrated broadcast and broadband (IBB) application embedded into the IBB DTV receiver by the device manufacturer. 3.2.24 integrated broadcast and broadband (IBB) DTV
40、service: A service that simultaneously provides an integrated experience of broadcasting and interactivity relating to media content, data and applications from multiple sources, where the interactivity is sometimes associated with broadcasting programmes. 3.2.25 remote application catalogue: Applic
41、ation catalogue exported from an application repository. This differs from the normal application catalogue in that, if the remote application catalogue is very large, there must be a mechanism for querying it and retrieving it in small parts that can be handled in an efficient way by the integrated
42、 broadcast and broadband (IBB) DTV receiver. 3.2.26 service associated IBB application: An application that is part of the integrated broadcast and broadband (IBB) DTV service tuned to by the user at a given time. 3.2.27 service exclusive IBB application: An application that is listed as a component
43、 of an integrated broadcast and broadband (IBB) DTV service; and its life cycle is strictly tied to the exhibition of such an IBB DTV service. 3.2.28 service shared IBB application: An application that is listed as a component of several different integrated broadcast and broadband (IBB) DTV service
44、s;. I its life cycle is for as long as any of those IBB DTV services are being exhibited. 3.2.29 stand-alone IBB application: Resident or downloaded integrated broadcast and broadband (IBB) installable application that is not part of an IBB DTV service. Such an application can be created by an autho
45、rized IBB application provider, and typically delivered through the application repository. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: ACF Application Control Framework AIP Application Install Package AIT Application Information Table DAV Distribu
46、ted Authoring and Versioning DSMCC DC Digital Storage Media Command and Control Data Carousel DSMCC OC Digital Storage Media Command and Control Object Carousel DTV Digital Television 4 Rec. ITU-T J.205 (2012)/Cor.2 (10/2014) EPG Electronic Programme Guide HAN Home Area Network HTTP Hyper Text Trans
47、fer Protocol HTTPS Secure Hyper Text Transfer Protocol IBB Integrated Broadcast and Broadband NFS Network File System PVR Personal Video Recorder RTP Real Time Protocol RTSP Real Time Streaming Protocol UI User Interface URL Universal Resource Locator 5 Conventions None. 6 Motivation With the increa
48、sing availability of broadband Internet access services, both consumer electronics manufacturers and DTV service providers have started taking advantage of this trend of providing connected devices and Internet services. The broadband technology also creates opportunities for players in other segmen
49、ts (such as Internet-based multimedia content providers, social networks, messaging, IP telephony, etc.) for delivering audio-visual-interactive content and connected applications to the living-room, traditionally restricted to TV broadcasters, cable TV and satellite TV service providers. As this ecosystem evolves and quickly incorporates new players, recommendations and standardization on how the systems should be designed and implemented will ease the path of this evolution. At the same time, the standardization of such a
