1、 IEC 62379-7 Edition 1.0 2015-06 INTERNATIONAL STANDARD Common control interface for networked digital audio and video products Part 7: Measurements IEC 62379-7:2015-06(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless other
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11、easurements INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160; 35.100 ISBN 978-2-8322-2753-4 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC 62379-7:2015 IEC 2015 CONTEN
12、TS FOREWORD . 5 INTRODUCTION . 7 1 Scope 10 2 Normative references. 10 3 Terms, definitions and abbreviations 10 3.1 Terms and definitions 10 3.2 Abbreviations 10 4 Audio format definitions . 11 5 Video format definitions . 11 6 MIB definitions for measurement information blocks . 11 6.1 General . 1
13、1 6.2 Type definitions . 12 6.2.1 General . 12 6.2.2 Textual conventions . 12 6.2.3 Sequences . 13 6.3 Network measurement information blocks 14 6.3.1 Network measurement information block structure 14 6.3.2 nMtBlockTable . 15 6.3.3 nMtBlockEntry 15 6.3.4 nMtBlockId . 15 6.3.5 nMtIfIndex 15 6.3.6 nM
14、tTxRxPoint 15 6.3.7 nMtNetworkType 16 6.3.8 nMtTransportType 16 6.3.9 nMtTxRxAddr . 16 6.3.10 nMtPortNumber 16 6.3.11 nMtIGMPVersion 16 6.3.12 nMtSIPServerAddr . 16 6.4 Audio measurement information blocks 17 6.4.1 Audio measurement information block structure 17 6.4.2 aMtBlockTable . 17 6.4.3 aMtBl
15、ockEntry 17 6.4.4 aMtBlockId . 18 6.4.5 aMtAudioComponentNumber 18 6.4.6 aMtNetworkBlockId 18 6.4.7 aMtAudioStatus 18 6.4.8 aMtAudioSignalFormat . 18 6.4.9 aMtAudioPId 18 6.4.10 aMtIfIndex 18 6.4.11 aMtFECType 19 6.4.12 aMtFECLengthDimension . 19 6.5 Video measurement information blocks 19 6.5.1 Vid
16、eo measurement information block structure 19 6.5.2 vMtBlockTable . 20 IEC 62379-7:2015 IEC 2015 3 6.5.3 vMtBlockEntry 20 6.5.4 vMtBlockId . 20 6.5.5 vMtAudioBlockId 20 6.5.6 vMtNetworkBlockId 20 6.5.7 vMtVideoStatus 20 6.5.8 vMtVideoSourceFormat 20 6.5.9 vMtVideoCodingType . 21 6.5.10 vMtVideoBitRa
17、teType . 21 6.5.11 vMtVideoBitRate 21 6.5.12 vMtVideoAspectRatio . 21 6.5.13 vMtFECType 21 6.5.14 vMtFECLengthDimension . 21 6.5.15 vMtTrickModeSupport 21 6.6 Receiver point measurement information block 21 6.6.1 Receiver measurement information block structure . 21 6.6.2 rxPointTable 22 6.6.3 rxPoi
18、ntEntry . 23 6.6.4 rxPointBlockId 23 6.6.5 rxPointNetworkBlockId . 23 6.6.6 rxPointBufferSize . 23 6.6.7 rxPointBufferOcpancyTime . 23 6.6.8 rxPointBufferOcpncyPcnt . 23 6.6.9 rxPointMDI . 23 6.6.10 rxPointTSDF 23 6.7 Temperature measurement information block . 23 6.7.1 Temperature measurement infor
19、mation block structure . 23 6.7.2 temperatureTable . 24 6.7.3 temperatureEntry . 24 6.7.4 temperatureBlockId 24 6.7.5 temperatureLocnNumber 25 6.7.6 temperatureLocation 25 6.7.7 temperatureTrend 25 6.7.8 temperatureStatus . 25 6.7.9 temperatureLowWarning 25 6.7.10 temperatureHighWarning 25 6.7.11 te
20、mperatureLowCritical 25 6.7.12 temperatureHighCritical 25 Annex A (informative) Machine-readable measurement block definitions . 26 Annex B (informative) Machine-readable textual conventions definitions . 44 Annex C (informative) Worked example 48 C.1 Overview. 48 C.2 Example 1 . 48 C.2.1 General .
21、48 C.2.2 Block table . 48 C.2.3 Mixer block 50 C.2.4 Multiple functionality device 51 C.2.5 Summary of tables . 54 Bibliography . 55 4 IEC 62379-7:2015 IEC 2015 Figure 1 Relationships between ECN groups ACIP, VCIP and IPM 8 Figure 2 Network measurement information block . 14 Figure 3 Audio measureme
22、nt information block . 17 Figure 4 Video measurement information block . 19 Figure 5 Receiver measurement information block 22 Figure 6 Temperature measurement information block 24 Figure C.1 Example of a modified audio device. 48 Figure C.2 Annotated connector diagram 49 Figure C.3 Mixer section 50
23、 Figure C.4 Single device with multiple functionality . 52 Figure C.5 Measurement blockIds and their associated media components . 52 Figure C.6 Single device with multiple functionality . 53 Table 1 Managed objects for network measurement information blocks . 15 Table 2 Managed objects for audio me
24、asurement information blocks . 17 Table 3 Managed objects for video measurement information blocks . 20 Table 4 Managed objects for receiver measurement information blocks . 22 Table 5 Managed objects conveying temperature information about the unit 24 Table C.1 Main block Id table . 49 Table C.2 Mi
25、xer related block Id table 50 Table C.3 Mixer block tables 51 Table C.4 Addition of measurement block Ids 52 Table C.5 Video measurement table . 53 Table C.6 Network measurement table . 53 Table C.7 Audio measurement table . 53 Table C.8 Table summary 54 IEC 62379-7:2015 IEC 2015 5 INTERNATIONAL ELE
26、CTROTECHNICAL COMMISSION _ COMMON CONTROL INTERFACE FOR NETWORKED DIGITAL AUDIO AND VIDEO PRODUCTS Part 7: Measurements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Co
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37、tional Standard IEC 62379-7 has been prepared by technical area 4: Digital system interfaces and protocols of IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: CDV Report on voting 100/2168/CDV 100/2338/RVC
38、Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 6 IEC 62379-7:2015 IEC 2015 A list of all parts in the IEC 62379 series, published
39、under the general title Common control interface for networked digital audio and video products, can be found on the IEC website. 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“
40、in the data related to the specific publication. At this date, the 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. IMPORTANT The colour inside logo on the cover page of this publication indi
41、cates 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 printer. IEC 62379-7:2015 IEC 2015 7 INTRODUCTION IEC 62379 specifies the common control interface, a protocol for managing equipm
42、ent which conveys audio and/or video across digital networks. An introduction to the common control interface is given in IEC 62739-1. This part of IEC 62379 specifies those aspects that are specific for using the block structure as defined in IEC 62379-1, for standardising the collection method of
43、audio and video parameters for use by the European Broadcasting Union Expert Communities Networks Internet Protocol (IP) Measurements (EBU ECN-IPM) Group. The collection of network related parameters may be outside the scope of this standard. These are expected to be collected from the standard Inte
44、rnet Engineering Task Force (IETF) Management Information Base (MIBs) that are generally present in most (if not all) networked equipment. Some specific network parameters are included that are not obtainable from existing standard IETF MIBs. Structure of the family of standards IEC 62379 specifies
45、the common control interface, a protocol for managing networked audiovisual equipment. It is intended to include the following Parts: Part 1: General Part 2: Audio Part 3: Video Part 4: Data Part 5: Transmission over networks Part 6: Packet transfer service Part 7: Measurement Part 1 specifies aspec
46、ts which are common to all equipment. Parts 2 to 4 specify control of internal functions specific to equipment carrying particular types of live media. Part 4 does not refer to packet data such as the control messages themselves. Part 5 specifies control of transmission of these media over each indi
47、vidual network technology. It includes network specific management interfaces along with network specific control elements that integrate into the control framework. Part 6 specifies carriage of control and status messages and non-audiovisual data over transports that do not support audio and video,
48、 such as RS232 serial links, with (as with Part 5) a separate subpart for each technology. Part 7 specifies those aspects that are specific to the measurement requirements of the EBU ECN-IPM Group. An introduction to the common control interface is given in IEC 62739-1. Description, aims and require
49、ments of the EBU ECN-IPM Group In recent years, EBU members have been increasingly adopting IP networks for the contribution of audio and video in real-time. It is well known that although IP networks are of lower cost and provide more flexibility compared with circuit switched networks, they suffer 8 IEC 62379-7:2015 IEC 2015 from longer delays and have much larger jitter, while broadcasters tolerance to these variables is much less than that of normal bus
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