1、 IEC 61603-8-1 Edition 1.0 2003-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Transmission of audio and/or video and related signals using infrared radiation Part 8-1: Digital audio and related signals Transmission de signaux audio et/ou vido et de signaux similaires par rayonnement infrarouge Part
2、ie 8-1: Signaux audio numriques et similaires IEC 61603-8-1:2003 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2003 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mecha
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16、ion ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61603-8-1 Edition 1.0 2003-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Transmission of audio and/or video and related signals using infrared rad
17、iation Part 8-1: Digital audio and related signals Transmission de signaux audio et/ou vido et de signaux similaires par rayonnement infrarouge Partie 8-1: Signaux audio numriques et similaires INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE X ICS 33.040.20; 33.1
18、60.99 PRICE CODE CODE PRIX ISBN 978-2-88912-443-5 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61603-8-1 IEC:2003 CONTENTS FOREWORD . 5 1 Scope . 7 2 Normative references . 7 3 Terms, definitions and abbreviatio
19、ns 7 3.1 Terms and definitions 7 3.2 Abbreviations 8 4 System description . 8 4.1 General . 8 4.2 Area of application 9 4.3 Band allocation . 9 5 General characteristics . 11 5.1 Environment conditions for operation 11 5.2 Partition of functions between elements of the systems . 11 6 Specific requir
20、ements . 11 6.1 Block diagram . 11 6.2 Input and output 12 6.3 Carrier . 12 6.4 Sub-carrier 12 6.5 Channel allocation . 12 6.6 Block structure 14 6.7 Source stream . 14 6.8 Transmission stream . 19 6.9 Modulation 21 7 Characteristics and measurements . 26 7.1 Test conditions 26 7.2 Location 26 7.3 T
21、ransmitting distance and directivity 26 7.4 Spurious level . 28 7.5 Accuracy of transmission-check frequency 28 8 Marking and contents of specifications . 28 8.1 Marking . 28 8.2 Contents of specifications . 28 Annex A (normative) Application of the transmission systems for digital audio and related
22、 signals using infrared radiation in the consumer audio mode . 33 Annex B (normative) Application of the transmission systems for digital audio and related signals using infrared radiation in the professional audio mode . 42 Figure 1 System concept . 9 Figure 2 IEC 61603 band allocation . 10 Figure
23、3 Band allocation 10 Figure 4 Transmitter 11 Figure 5 Channel-coding block . 12 Figure 6 Channel allocation . 13 Figure 7 Block structure . 14 Figure 8 Source stream 15 61603-8-1 IEC:2003 3 Figure 9 Source_block stream 15 Figure 10 Source_info stream 16 Figure 11 Block alignment 17 Figure 12 Parity
24、check matrix . 18 Figure 13 Error correction code block 19 Figure 14 Transmission stream 19 Figure 15 The order bytes in Tr_section . 20 Figure 16 Modulation block 21 Figure 17 Byte to symbol conversion 22 Figure 18 XOR gates . 22 Figure 19 Scramble pattern generator 23 Figure 20 QPSK mapping. 24 Fi
25、gure 21 Baseband filter characteristics . 25 Figure 22 Transmission chain 29 Figure 23 Location for measurements 29 Figure 24 Transmitting distance . 29 Figure 25 Angle of half optical radiant intensity 29 Figure 26 Optical axis of the transmitter . 30 Figure 27 Optical axis of the receiver . 30 Fig
26、ure 28 Characteristics of the transmitter 30 Figure 29 Directivity characteristics of the transmitter 31 Figure 30 Characteristics of the receiver 31 Figure 31 Directivity characteristics of the receiver 32 Figure 32 Measuring system for spurious emission 32 Figure A.1 Source_info structure 33 Figur
27、e A.2 crc_area . 38 Figure A.3 Linear feedback shift register circuit . 38 Figure A.4 Sub-frame structure of full-band mode 39 Figure A.5 Sub-frame structure of half-band mode . 41 Figure B.1 Source_info structure 42 Figure B.2 CRC area . 46 Figure B.3 Linear feedback shift register circuit . 47 Fig
28、ure B.4 Sub-frame structure of full-band mode 47 Figure B.5 Sub-frame structure of half-band mode . 50 Table 1 Analogue audio channel allocation 10 Table 2 Sub-carrier frequency 12 Table 3 Maximum source stream bit rate 13 Table 4 Bit rate of digital audio 13 Table 5 Byte values in a transmission_in
29、fo . 16 Table 6 Reed-Solomon code parameter . 17 Table 7 Header bit field 20 Table 8 Marking and contents of specifications 28 4 61603-8-1 IEC:2003 Table A.1 crc_flag 35 Table A.2 Valid_flag . 35 Table A.3 Data_type 35 Table A.4 36 Table A.5 Mode_extension_code . 36 Table A.6 pro_flag . 36 Table A.7
30、 pcm_id . 36 Table A.8 Copyright_flag 37 Table A.9 Emphasis . 37 Table A.10 fs_code 37 Table A.11 Mode_extension_code . 40 Table B.1 Crc_flag . 44 Table B.2 Valid_flag . 44 Table B.3 Data_type 44 Table B.4 Coding_mode . 44 Table B.5 Mode_extension_code . 45 Table B.6 pro_flag . 45 Table B.7 pcm_id .
31、 45 Table B.8 Emphasis . 45 Table B.9 fs_code 46 Table B.10 Mode_extension_code . 49 61603-8-1 IEC:2003 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ TRANSMISSION OF AUDIO AND/OR VIDEO AND RELATED SIGNALS USING INFRARED RADIATION Part 8-1: Digital audio and related signals FOREWORD 1) The Internatio
32、nal 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 standardization in the electrical and electronic
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41、e 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 drawn to the possibility that some of the elem
42、ents 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. International Standard IEC 61603-8-1 has been prepared by technical area 3, Infrared systems and applications, of IEC technical committee 100: Audio, vid
43、eo and multimedia systems and equipment. This part of IEC 61603 replaces 6.8.3 of IEC 61603-2. This bilingual version, published in 2011-04, corresponds to the English version. The text of this standard is based on the following documents: FDIS Report on voting 100/628/FDIS 100/706/RVD Full informat
44、ion on the voting for the approval of this standard can be found in the report on voting indicated in the above table. 6 61603-8-1 IEC:2003 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain
45、 unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 61603-8-1 IEC:2003 7 TRANSMISSION OF AUDIO AND/OR
46、VIDEO AND RELATED SIGNALS USING INFRARED RADIATION Part 8-1: Digital audio and related signals 1 Scope This part of IEC 61603 specifies the characteristics and measuring methods for digital audio signal transmission systems using infrared radiation with sub-carrier of the frequency ranges 3 MHz to 6
47、 MHz. It describes systems with different economic uses of the available bandwidth in order to obtain minimum interference and maximum compatibility. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the editi
48、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60958-1, Digital audio interface Part 1: General IEC 60958-3, Digital audio interface Part 3: Consumer applications IEC 60958-4, Digital audio interface Part 4: Professional applications IEC 61603-1:1997, Transmission of audio and/or video and related signals using infra-red radiation Part 1: General IEC 61603-2:1997, Transmission of audio and/or video and related signals using infra-red radiation Part 2: Transmission systems for audio wide band and relate
