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 H.703 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2016) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS IPTV multimedia services and applications for IPTV General aspects Enhanced user interface framework for IPTV term
2、inal devices Recommendation ITU-T H.703 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.229 Systems aspects H.230H.2
3、39 Communication procedures H.240H.259 Coding of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of service architecture for audiov
4、isual and multimedia services H.360H.369 Telepresence H.420H.429 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H.510
5、H.519 Mobile multimedia collaboration applications and services H.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559 Mobile multimedia collaboration inte
6、r-working procedures H.560H.569 BROADBAND, TRIPLE-PLAY AND ADVANCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 Ubiquitous sensor network applications and Internet of Things H.640H.649 IPTV MULTIMEDIA SERVICES AND AP
7、PLICATIONS FOR IPTV General aspects H.700H.719 IPTV terminal devices H.720H.729 IPTV middleware H.730H.739 IPTV application event handling H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 Digital Signage H.780H.
8、789 E-HEALTH MULTIMEDIA SERVICES AND APPLICATIONS Personal health systems H.810H.819 Interoperability compliance testing of personal health systems (HRN, PAN, LAN, TAN and WAN) H.820H.859 Multimedia e-health data exchange services H.860H.869 For further details, please refer to the list of ITU-T Rec
9、ommendations. Rec. ITU-T H.703 (07/2016) i Recommendation ITU-T H.703 Enhanced user interface framework for IPTV terminal devices Summary The enhanced user interface (UI) framework defines the functional elements supporting enhanced capability of user interaction over an IPTV terminal device. The en
10、hanced UI functions are located in the end user functions of terminal device and coordinate together with IPTV terminal functions. The enhanced UI functions include user interface of touchscreen and speech. This Recommendation also describes the event features, general requirements and functionaliti
11、es of the framework to support enhanced user interface for IPTV terminal device, which are recommended on the basis of IPTV architecture ITU-T Y.1910. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T H.703 2016-07-14 16 11.1002/1000/12908 Keywords IPTV, speech interface, touc
12、h interface, user interface. * To access the Recommendation, 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 H.703 (07/2016) FOREWORD The International Telec
13、ommunication Union (ITU) is the United Nations specialized 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 ta
14、riff questions and issuing Recommendations on them 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 Recom
15、mendations on these topics. The approval of ITU-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 Recomme
16、ndation, the expression “Administration“ is used 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., interoperab
17、ility or applicability) and compliance with the 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 com
18、pliance with the Recommendation is required of any 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, validit
19、y or applicability of claimed Intellectual Property 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 received notice of intellectual property, protected by patents, which may be required to
20、 implement this Recommendation. However, implementers 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 2016 All rights reserved. No part of this publication may be reproduced, by
21、any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.703 (07/2016) 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 . 2 4 Abbreviations and acronyms 2 5 Conventions 2 6 Introducti
22、on . 3 7 Requirements 4 7.1 Touchscreen requirement . 5 7.2 Speech requirement 5 8 UI functionality and interfaces . 6 8.1 Touchscreen 7 8.2 Speech . 13 Appendix I Examples of functional flow for mirroring remote controller . 19 Appendix II Examples for generating touch/key input event data 22 II.1
23、Case I: Multi-touch tracking not supported 22 II.2 Case II: Multi-touch tracking supported . 23 II.3 Case III: Example of key button “A“ input 24 Appendix III Summary of relevant standardization activity . 26 I.1 W3C 26 I.2 ISO/IEC JTC1 SC35 . 26 I.3 ITU-T 27 Bibliography. 28 Rec. ITU-T H.703 (07/20
24、16) 1 Recommendation ITU-T H.703 Enhanced user interface framework for IPTV terminal devices 1 Scope This Recommendation describes the event features, general requirements and functionalities of the framework to support enhanced user interface for IPTV terminal device. This Recommendation focuses on
25、 touchscreen and speech at a high-level. The purpose of enhanced UI framework is to define the functional element supporting enhanced capability of user interaction over an IPTV terminal device regarding touchscreen and speech interface. 2 References The following ITU-T Recommendations and other ref
26、erences contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to in
27、vestigate 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 is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the
28、status of a Recommendation. ITU-T H.760 Recommendation ITU-T H.760 (2009), Overview of multimedia application frameworks for IPTV services. ITU-T Y.1901 Recommendation ITU-T Y.1901 (2009), Requirements for the support of IPTV services. ITU-T Y.1910 Recommendation ITU-T Y.1910 (2008), IPTV functional
29、 architecture. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 application b-ITU-T Y.101: A structured set of capabilities, which provide value-added functionality supported by one or more services. 3.1.2 application programming interfa
30、ce (API) b-ITU-T Y.110: This is an implementation interface between equipment and a software module and does not have any physical realization as it is internal to the equipment. 3.1.3 content b-ITU-T H.780: A combination of audio, still image, graphic, video, or data. NOTE Variety of formats is cla
31、ssified as the “data“ (e.g., text, encoded values, multimedia description language introduced by ITU-T H.760). 3.1.4 terminal device (TD) ITU-T Y.1901: An end-user device which typically presents and/or processes the content, such as a personal computer, a computer peripheral, a mobile device, a TV
32、set, a monitor, a VoIP terminal or an audio-visual media player. 3.1.5 user agent b-W3C WebArch: One type of web agent; a piece of software acting on behalf of a person. 2 Rec. ITU-T H.703 (07/2016) 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 appro
33、aching tool: A tool to contact or to point touchscreen, e.g., a finger or a stylus pen. 3.2.2 event packet: A packetized stream of touch input event. 3.2.3 speech: Speech is the vocalized form of human communication. 3.2.4 speech recognition: A kind of user interface for translation of spoken words
34、into text. 3.2.5 touchscreen: A touchscreen is an electronic visual display that the user can control through simple or multi-touch gestures by touching the screen. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: API Application Programming Interface D
35、B Database DNN Deep Neural Network DOM Document Object Model EPG Electronic Programme Guide ICT Information and Communication Technology JPEG Joint Photographic Experts Group NLP Natural Language Processing PNG Portable Network Graphics QA Question Answering TD Terminal Device TV Television UI User
36、Interface VOD Video on Demand 5 Conventions The following conventions are used in this Recommendation: The keywords “is required to“ indicate a requirement which must be strictly followed and from which no deviation is permitted, if conformance to this Recommendation is to be claimed. The keywords “
37、is prohibited from“ indicate a requirement which must be strictly followed and from which no deviation is permitted, if conformance to this Recommendation is to be claimed. The keywords “is recommended“ indicate a requirement which is recommended but which is not absolutely required. Thus, this requ
38、irement need not be present to claim conformance. The keywords “is not recommended“ indicate a requirement which is not recommended but which is not specifically prohibited. Thus, conformance with this Recommendation can still be claimed even if this requirement is present. The keywords “can optiona
39、lly“ indicate an optional requirement which is permissible, without implying any sense of being recommended. This term is not intended to imply that Rec. ITU-T H.703 (07/2016) 3 the vendors implementation must provide the option and the feature can be optionally enabled by the network operator/servi
40、ce provider. Rather, it means the vendor may optionally provide the feature and still claim conformance with this Recommendation. The keyword “functions“ is defined as a collection of functionalities. It is represented by the following symbol in the context of IPTV architecture: The keyword “functio
41、nal block“ is defined as a group of functionalities that have not been further subdivided at the level of detail described in this Recommendation. It is represented by the following symbol in the context of IPTV architecture: 6 Introduction The enhanced UI is considered as a functional element suppo
42、rting enhanced capability of user interaction in an IPTV terminal device. Figure 1 shows the recommended conceptual diagram for presenting relation of enhanced UI functions in the case of IPTV terminal device, which is based on the IPTV architecture in ITU-T Y.1910. The enhanced UI functions element
43、 is located in the end user functions of terminal device, and coordinates together with IPTV terminal functions. The enhanced UI functions include user interface of touchscreen and speech. A touchscreen is an input device that allows users to operate a device simply by touching the display screen. T
44、ouchscreen technology is one of the ways for IPTV users to interact with IPTV services. However, most IPTV sets still do not have touchscreen capabilities for direct touching on an IPTV screen. However, there are alternative ways for IPTV viewers to interact with IPTV services, such as using handhel
45、d devices with touch screens (e.g., smartphones and tablet computers). Handheld devices can be used as “screen-mirroring remote controllers“. These handheld devices have touchscreen capabilities that, coupled with screen-mirroring remote control service capabilities, can be used to control IPTV func
46、tions and applications of the set-top box as if the user directly touched the IPTV screen. With screen-mirroring remote control service, users can watch IPTV content with an intuitive and convenient way to manipulate IPTV functions and applications. Speech interface is used in IPTV services to contr
47、ol and interact with the IPTV terminal device. Users can, for example, change channels or control volumes with their own voice. Users can also ask questions in natural language on the IPTV programmes such as the title of a specific TV drama using advanced speech interface functions. Speech interface
48、 is much used in the current diverse information and communication technology (ICT) systems including mobile environment that provides convenient user experiences to control various devices and tools due to the advancement of speech recognition and speech synthesis technology. Some examples would in
49、clude car navigation systems with speech, voice search system, interactive intelligent assistant service, English educational services, and intelligent chatting robots. It also provides the core function for providing accessibility to ICT systems including IPTV for users with disabilities. Functional block Functions 4 Rec. ITU-T H.703 (07/2016) Figure 1 Enhanced UI functions in case of IPTV terminal device 7 Requirements General UI requirements for IPTV service are as follows: The UI is recom
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