BS PD IEC TR 61998-2015 Model and framework for standardization in multimedia equipment and systems《多媒体设备与系统标准化的模型和框架》.pdf

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1、BSI Standards Publication Model and framework for standardization in multimedia equipment and systems PD IEC/TR 61998:2015National foreword This Published Document is the UK implementation of IEC/TR 61998:2015. The UK participation in its preparation was entrusted to Technical Committee EPL/100, Aud

2、io, video and multimedia systems and equipment. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British S

3、tandards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 89539 5 ICS 33.160.60 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 Dec

4、ember 2015. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD IEC/TR 61998:2015 IEC TR 61998 Edition 2.0 2015-11 TECHNICAL REPORT Model and framework for standardization in multimedia equipment and systems INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160.60

5、ISBN 978-2-8322-2991-0 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. PD IEC/TR 61998:2015 2 IEC TR 61998:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references

6、. 7 3 Terms and definitions 7 4 Generic model . 7 4.1 General . 7 4.2 Physical and logical connectivity 8 4.2.1 General . 8 4.2.2 Information transfer media 9 4.2.3 Transferred data structure 10 4.3 Easy operation 12 4.4 Security 13 5 Specific models . 13 5.1 General . 13 5.2 Multimedia data . 13 5.

7、3 Data creation 14 5.4 Equipment structure 14 5.5 User interface . 15 5.6 Distribution and management 15 5.7 Open system interconnection with media . 15 5.7.1 Specific layers . 15 5.7.2 Application layer 17 5.7.3 Presentation layer 17 5.7.4 File layer . 18 5.7.5 Logical storage layer 18 5.7.6 Physic

8、al storage layer 18 5.7.7 Physical layer 18 5.8 Application specific modeling . 19 5.9 TC 100 frameworks . 19 5.9.1 TC 100 model 19 5.9.2 TC 100 model and user communication 21 5.9.3 Networked TC 100 model . 22 5.9.4 Environmental aspect of the TC 100 model . 23 Bibliography . 24 Figure 1 Generic mo

9、del 8 Figure 2 Model of physical and logical connectivity . 9 Figure 3 Intersystem model 9 Figure 4 Inter-device (intra-system) model 10 Figure 5 Data structure in intersystem/intercommunication media . 11 Figure 6 Data structure in intersystem/interchangeable storage media 11 Figure 7 Generic model

10、 for user-system interfaces . 12 Figure 8 Generic model for security 13 Figure 9 Dexter model 14 PD IEC/TR 61998:2015IEC TR 61998:2015 IEC 2015 3 Figure 10 Systems and equipment model . 15 Figure 11 Seven layer reference model and peer formats 16 Figure 12 Information interchange involving open syst

11、ems for medium conversion . 17 Figure 13 TC 100 model . 20 Figure 14 TC 100 model and user communication . 22 Figure 15 Networked TC 100 models 23 PD IEC/TR 61998:2015 4 IEC TR 61998:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MODEL AND FRAMEWORK FOR STANDARDIZATION IN MULTIMEDIA EQUIP

12、MENT AND SYSTEMS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning stand

13、ardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparati

14、on is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with

15、 the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subje

16、cts since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical

17、content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent po

18、ssible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide confo

19、rmity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its direc

20、tors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising

21、 out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is dra

22、wn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committe

23、e may propose the publication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC TR 61998, which is a technical report, has been prepared by IEC technical committee 100: Audio, v

24、ideo and multimedia systems and equipment. This second edition cancels and replaces the first edition published in 1999 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the annexes describing various tech

25、nologies have been deleted because their roles have ceased over the past two decades; PD IEC/TR 61998:2015IEC TR 61998:2015 IEC 2015 5 b) TC 100 frameworks are described in more general form and from the viewpoint of the model of data usage and communication including the possible future technologie

26、s of TC 100. The text of this technical report is based on the following documents: Enquiry draft Report on voting 100/2528/DTR 100/2576/RVC Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. This publication ha

27、s been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, t

28、he publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. PD IEC/TR 61998:2015 6 IEC TR 61998:2015 IEC 2015 INTRODUCTION Multimedia technology covers a wide range of technical areas and involves a

29、number of technical elements. Most of the technical elements for multimedia are now being developed and updated. IEC standardization activities on the multimedia technology, therefore, should be carried out with enough discussions and clarifications on position and relationship of the technology to

30、be standardized among the collection of related technologies, scope and framework/guideline of the standardization, appropriate standardization organisation having the responsibility, schedule of the standardization, relationship between new work items and the existing standards on multimedia or sin

31、gle medium technology. These discussions should be based on appropriate multimedia technology models to create a framework for multimedia standardization. The first edition of this Technical Report was a snapshot of these discussions in IEC/TC 100 with consideration of the draft IEC PACT (Presidents

32、 Advisory Committee on Future Technology) report which was a study and foreseer on future technology. After that, TC 100 had been engaged in standardization of audio, video and multimedia equipment and systems for over ten years. In 2010, TC 100/AGS (Advisory Group on Strategy) started to study futu

33、re technology again because some of ten years of progress of technology had reached beyond the IEC PACT foreseer. The study was FT-TG (Future Technology Task Force) that studied the technology forecast in the near future and resulted to raise Study Sessions in AGS to initiate the new technology area

34、s in TC 100. At the same time, the need to revise IEC TR 61998 was recognized. This new edition of this Technical Report is based on the IEC PACT report and redefines the TC 100 system model to initiate the future TC 100 standardization work. This Technical Report is expected to contribute as a guid

35、eline for IEC standardization experts and National Committees interested in multimedia equipment and systems. PD IEC/TR 61998:2015IEC TR 61998:2015 IEC 2015 7 MODEL AND FRAMEWORK FOR STANDARDIZATION IN MULTIMEDIA EQUIPMENT AND SYSTEMS 1 Scope This Technical Report provides models and frameworks for

36、the standardization of multimedia technology, being undertaken or to be undertaken by IEC as the result of the IEC PACT report. 2 Normative references Void. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 originator entity, system or device t

37、hat provides information or service, or container which includes information or service 3.2 recipient entity, system, operator or device that receives information or service, or container which includes information or service 3.3 multimedia technology systematic co-ordination of different single med

38、ium technologies 4 Generic model 4.1 General The generic model clarifies AV and IT multimedia technology and its boundaries. Standardization is in general required to obtain the following: physical and logical connectivity; usability and accessibility; identification; quality; safety and security; e

39、asy implementation; ecological considerations; energy efficiency; environmental safeguards. The major purposes of multimedia standardization are: PD IEC/TR 61998:2015 8 IEC TR 61998:2015 IEC 2015 physical and logical connectivity Multimedia data interchange and distribution are based on communicatio

40、n media and interchangeable storage media. Protocols, formats, interfaces, and other data structures of the media are required to be standardized. The features of multimedia data, in particular, make those standards more complicated than in the case of a single medium. usability and accessibility Mu

41、ltimedia systems contain a number of basic single medium parts, each of which requires appropriate interaction with any users or other systems. In order to realise feasible and human-recognisable operation for the multimedia systems, simplified and standardized user-system interfaces are essential.

42、safety and security Multimedia equipment and systems form or will form a basic and important infrastructure of national and international activity. Some multimedia data are required to be highly secured. Some systems are required to be strongly protected and besides their operation should be comfort

43、able and safe for operators whose sense organs need to access concurrently to their corresponding media; visible, audible, and other sensible media. Safe and secured environments should be implemented by being based on some guideline and standards. All the subjects to be standardized for this purpos

44、e can be modelled by the relationship between an originator and a recipient as shown in Figure 1. Figure 1 Generic model Each multimedia technology for the relationship should be discussed along with appropriate axes defined to describe corresponding features of the relationship. 4.2 Physical and lo

45、gical connectivity 4.2.1 General When considering physical and logical connectivity, as presented in Figure 2, an originator is positioned to be an entity, system or device which provides information. A recipient should be an entity, system or device which receives the information. They are reconnec

46、ted with each other by a relationship: information transfer. The information transfer can be carried out by different types of information transfer media. Another aspect of the information transfer is a structure of data to be transferred by the medium. IEC Originator Recipient Relationship PD IEC/T

47、R 61998:2015IEC TR 61998:2015 IEC 2015 9 Figure 2 Model of physical and logical connectivity 4.2.2 Information transfer media 4.2.2.1 Intersystem model The physical media for information transfer between systems are classified into: Broadcasting media Broadcasting media support simultaneous informat

48、ion transfer to a number of recipients. Examples of the wireless broadcasting media are BS, CS and terrestrial. Intercommunication media Intercommunication media support information transfer between two or more systems at a time. Examples of intercommunication media are Internet, WAN, LAN and any ar

49、ea network. Interchangeable storage media Interchangeable storage media (ISM), e.g., optical disks facilitate data transfer by allowing the physical movement of the ISM from system to system. Large amounts of data transfer can inexpensively and quickly be realised by using interchangeable storage media. Flash memory, hard disk drive are classified as ISM. They associate open systems as described in Figure 3. Figure 3 Intersystem model IEC O