1、 ISO/IEC 29341-4-3Edition 1.0 2008-11INTERNATIONAL STANDARD Information technology UPnP Device Architecture Part 4-3:Audio Video Device Control Protocol Level 2 Media Server Device ISO/IEC 29341-4-3:2008(E)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 ISO/IEC,Geneva,Switzerland All rights r
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9、ology UPnP Device Architecture Part 4-3:Audio Video Device Control Protocol Level 2 Media Server Device INTERNATIONAL ELECTROTECHNICAL COMMISSION LICS 35.200 PRICE CODEISBN 2-8318-1006-3 2 29341-4-3 ISO/IEC:2008(E)CONTENTS FOREWORD.4 ORIGINAL UPNP DOCUMENTS(informative).6 1 Overview and Scope.8 1.1
10、Introduction.8 1.2 Notation.9 1.2.1 Data Types.9 1.2.2 Strings Embedded in Other Strings.10 1.2.3 Extended Backus-Naur Form.10 1.3 Derived Data Types.11 1.3.1 Comma Separated Value(CSV)Lists.11 1.4 Management of XML Namespaces in Standardized DCPs.13 1.4.1 Namespace Prefix Requirements.16 1.4.2 Name
11、space Names,Namespace Versioning and Schema Versioning.17 1.4.3 Namespace Usage Examples.18 1.5 Vendor-defined Extensions.19 1.6 References.19 2 Device Definitions.23 2.1 Device Type.23 2.2 Device Model.23 2.2.1 Description of Device Requirements.24 2.2.2 Relationships between Services.24 2.3 Theory
12、 of Operation.24 2.3.1 Device Discovery.25 2.3.2 Locating Desired Content.25 2.3.3 Preparing to Transfer the Content.25 2.3.4 Controlling the Transfer of the Content.26 2.3.5 Recording Content.26 3 XML Device Description.27 4 Test.29 29341-4-3 ISO/IEC:2008(E)3 LIST OF TABLES Table 1-1:EBNF Operators
13、.11 Table 1-2:CSV Examples.13 Table 1-3:Namespace Definitions.15 Table 1-4:Schema-related Information.16 Table 1-5:Default Namespaces for the AV Specifications.17 Table 2-6:Device Requirements.23 LIST OF FIGURES Figure 1:MediaServer Functional Diagram.9 4 29341-4-3 ISO/IEC:2008(E)INFORMATION TECHNOL
14、OGY UPNP DEVICE ARCHITECTURE Part 4-3:Audio Video Device Control Protocol Level 2 Media Server Device FOREWORD 1)ISO(International Organization for Standardization)and IEC(International Electrotechnical Commission)form the specialized system for worldwide standardization.National bodies that are mem
15、bers of ISO or IEC participate in the development of International Standards.Their preparation is entrusted to technical committees;any ISO and IEC member body interested in the subject dealt with may participate in this preparatory work.International governmental and non-governmental organizations
16、liaising with ISO and IEC also participate in this preparation.2)In the field of information technology,ISO and IEC have established a joint technical committee,ISO/IEC JTC 1.Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting.Publication as an International Standard requires approval by at least 75%of the national bodies casting a vote.3)The formal decisions or agreements of IEC and ISO on technical matters express,as nearly as pos
