1、 IEC 62481-3 Edition 3.0 2017-07 INTERNATIONAL STANDARD Digital living network alliance (DLNA) home networked device interoperability guidelines Part 3: Link protection IEC 62481-3:2017-07(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switzerland All rights re
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11、delines Part 3: Link protection INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160; 35.100.05; 35.110 ISBN 978-2-8322-4541-5 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 I
12、EC 62481-3:2017 IEC 2017 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope 8 2 Normative references 8 3 Terms, definitions, abbreviated terms and conventions 9 3.1 Terms and definitions 9 3.3 Conventions 14 4 DLNA home network architecture 14 5 DLNA device model . 15 6 Guideline terminology and convent
13、ions 15 7 Common Link Protection guidelines . 15 7.1 General . 15 7.2 Conditions for measuring time in message exchanges 15 7.3 Networking and connectivity 15 7.4 Device discovery and control 15 7.5 Media management. 15 7.5.1 General . 15 7.5.2 Updates to existing general AV Media Management guideli
14、nes 18 7.5.3 New general AV Media Management guidelines . 18 7.5.4 MediaRenderer device guidelines 22 7.6 Media Transport 22 7.6.1 General . 22 7.6.2 Updates to existing general Media Transport guidelines 23 7.6.3 New general Media Transport guidelines . 23 7.6.4 HTTP transport 24 7.6.5 Updates to e
15、xisting general HTTP Media Transport guidelines 24 7.6.6 New general HTTP Media Transport guidelines . 29 7.6.7 Updates to existing general HTTP Media Transport for Streaming Transfer guidelines 33 7.6.8 MT RANGE behaviour for Interactive Transferred Content . 37 7.6.9 RTP transport 37 7.6.10 Update
16、 existing general RTP Transport guidelines . 37 7.6.11 New general RTP Transport guidelines: MT: RTP support for link protected content . 38 7.7 Content conversion device virtualization . 38 7.8 Link Protection technology guidelines . 38 7.8.1 Link Protection System: DTCP-IP 38 7.8.2 Link Protection
17、 System: Windows Media DRM for network Devices . 40 8 DTCP-IP Link Protection System guidelines 41 8.1 General . 41 8.2 CP DTCP-IP general guidelines 41 8.3 Networking and connectivity 41 8.3.1 General . 41 8.3.2 New DLNAQOS guidelines: QoS requirement for DTCP-IP traffic 41 8.3.3 New common device
18、guidelines: NC CP: wireless security 42 8.4 Device discovery and control 42 IEC 62481-3:2017 IEC 2017 3 8.5 Media Management. 42 8.5.1 General . 42 8.5.2 MM CP: DTCP-IP URI 42 8.5.3 MM CP: mandatory media operations 43 8.6 Media Transport 43 8.6.1 HTTP transport 43 8.6.2 RTP transport 47 8.7 Content
19、 conversion device virtualization . 49 8.8 Volume 2: DTCP-IP profiling guidelines 49 8.8.1 General . 49 8.8.2 CP DTCP-IP: profile. 49 8.8.3 CP DTCP-IP: profile MIME type definition 50 8.8.4 CP DTCP-IP: profile protected and unprotected content portions . 51 8.8.5 CP DTCP-IP: profile HTTP encapsulati
20、on 52 8.8.6 DTCP-IP profile encapsulation . 52 9 WMDRM-ND Link Protection System guidelines 55 9.1 Overview. 55 9.2 General guidelines 55 9.2.1 CP WMDRM-ND: guidelines 55 9.2.2 CP WMDRM-ND: support for HTTP 55 9.2.3 CP WMDRM-ND: support for RTP 56 9.2.4 CP WMDRM-ND: Registration and Revalidation pro
21、cedures 57 9.2.5 CP WMDRM-ND: discovery of Content Receivers 58 9.3 Networking and connectivity 58 9.3.1 General . 58 9.3.2 CP WMDRM-ND: QoS guidelines . 58 9.4 Device discovery and control 58 9.4.1 General . 58 9.4.2 CP WMDRM-ND: additional rules for DMRs . 59 9.5 Media management. 59 9.6 Media Tra
22、nsport 59 9.6.1 HTTP transport 59 9.6.2 RTP transport 64 9.7 Content conversion device virtualization . 67 9.8 Volume 2: WMDRM-ND profiling guidelines 68 9.8.1 General . 68 9.8.2 CP WMDRM-ND: identification of content transferred using WMDRM-ND68 9.8.3 CP WMDRM-ND: Media Format guidelines 68 9.8.4 C
23、P WMDRM-ND: MIME type 69 9.8.5 CP WMDRM-ND: Decoder Friendly Alignment Position 69 9.8.6 CP WMDRM-ND: Media Format Alignment Element . 69 Annex A (informative) An introduction to DLNA seek operations . 70 A.1 General . 70 A.2 UCDAM and seek operations 70 A.3 Seek models . 71 A.4 Full Random Access D
24、ata Availability . 71 A.5 Limited Random Access Data Availability 73 A.6 Seek operations on link protected content . 76 4 IEC 62481-3:2017 IEC 2017 Figure A.1 UCDAM definitions for seek operations . 71 Figure A.2 Full Random Access Data Availability model . 72 Figure A.3 Limited Random Access Data A
25、vailability model Mode 0 74 Figure A.4 Limited random access data availability model mode 1 . 75 Figure A.5 Content flow unprotected content 76 Figure A.6 Content flow link protected content . 77 Table 1 Summary of Domain Elements for Full Random Access Data Availability model . 16 Table 2 Summary o
26、f Domain Elements for Limited Random Access Data Availability model . 17 Table 3 AV Media Management guideline changes 18 Table 4 Recommended metadata properties 19 Table 5 Property type and multi value 20 Table 6 Updates to existing general Media Transport guidelines 23 Table 7 Updates to existing
27、general HTTP Media Transport guidelines 24 Table 8 Updates to existing general HTTP Media Transport for Streaming Transfer guidelines . 33 Table A.1 DLNA constructs of Full Random Access Data Availability model . 73 Table A.2 DLNA Constructs of Limited Random Access Data Availability model. 76 IEC 6
28、2481-3:2017 IEC 2017 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME NETWORKED DEVICE INTEROPERABILITY GUIDELINES Part 3: Link protection FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprisi
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39、ible for identifying any or all such patent rights. International Standard IEC 62481-3 has been prepared under technical area 8: Multimedia home systems and applications for end-user network, of IEC technical committee 100: Audio, video and multimedia systems and equipment. This third edition cancel
40、s and replaces the second edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) editorial updates; b) clarification for some of the guidelines that were ambiguous. 6 IEC 624
41、81-3:2017 IEC 2017 The text of this International Standard is based on the following documents: CDV Report on voting 100/2732/CDV 100/2882/RVC Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This docume
42、nt has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 62481 series, published under the general title Digital Living Network Alliance (DLNA) home networked device interoperability guidelines, can be found on the IEC website. The committee has decided that
43、the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual vers
44、ion of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour
45、printer. IEC 62481-3:2017 IEC 2017 7 INTRODUCTION Consumers are acquiring, viewing, and managing an increasing amount of digital media (photos, music, and video) on devices in the consumer electronics (CE), mobile, and personal computer (PC) domains. As such, they want to conveniently enjoy the cont
46、ent, regardless of the source, across different devices and locations in the home. The digital home vision integrates the Internet, mobile, and broadcast networks through a seamless, interoperable network, which will provide a unique opportunity for manufacturers and consumers alike. In order to ach
47、ieve this interoperability, a common set of industry design guidelines is needed that allows vendors to participate in a growing marketplace, leading to more innovation, simplicity, and value for consumers. This document serves that purpose and provides vendors with the information needed to build i
48、nteroperable networked platforms and devices for the digital home. 8 IEC 62481-3:2017 IEC 2017 DIGITAL LIVING NETWORK ALLIANCE (DLNA) HOME NETWORKED DEVICE INTEROPERABILITY GUIDELINES Part 3: Link protection 1 Scope This part of IEC 62481, the DLNA guidelines, specifies the DLNA Link Protection guid
49、elines, which are an extension of the DLNA guidelines. DLNA Link Protection is defined as the protection of a content stream between two devices on a DLNA network from illegitimate observation or interception using the protocols defined within this part of DLNA guidelines. Content protection is an important mechanism for ensuring that commercial content is protected from piracy and illegitimate redistribution. Link Protection is a technique that enables distribution of protec
