IEC 61603-8-1:2003

Transmission of audio and/or video and related signals using infrared radiation - Part 8-1: Digital audio and related signals

IEC 61603-8-1:2003 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 MHz. It describes systems with different economic uses of the available bandwidth in order to obtain minimum interference and maximum compatibility. It replaces 6.8.3 of IEC 61603-2. This bilingual version, published in 2011-04, corresponds to the English version.

Transmission de signaux audio et/ou vidéo et de signaux similaires par rayonnement infrarouge - Partie 8-1: Signaux audio numériques et similaires

La CEI 61603-8-1:2003 spécifie les caractéristiques et les méthodes de mesure de systèmes de transmission de signaux audio numériques par rayonnement infrarouge avec des sous-porteuses entre 3 MHz et 6 MHz. Elle décrit des systèmes avec des utilisations économiquement différentes de la bande passante disponible en vue d'un brouillage minimal et d'une compatibilité maximale. Elle remplace le 6.8.3 de la CEI 61603-2. La présente version bilingue, publiée en 2011-04, correspond à la version anglaise.

General Information

• Status: Published
• Publication Date: 03-Nov-2003
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.040.20 - Transmission systems
• ICS: 33.160.99 - Other audio, video and audiovisual equipment
• Technical Committee: TA 4 - Digital system interfaces and protocols
• Drafting Committee: PT 61603-8-1 - TC 100/PT 61603-8-1
• Current Stage: PPUB - Publication issued
• Start Date: 30-Nov-2003
• Completion Date: 04-Nov-2003

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
61603-8-1
First edition
2003-11
Transmission of audio and/or video and
related signals using infrared radiation –
Part 8-1:
Digital audio and related signals
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
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INTERNATIONAL IEC
STANDARD
61603-8-1
First edition
2003-11
Transmission of audio and/or video and
related signals using infrared radiation –
Part 8-1:
Digital audio and related signals
 IEC 2003  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
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Commission Electrotechnique Internationale
X
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 61603-8-1  IEC:2003(E)
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references. 7
3 Terms, definitions and abbreviations. 7
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 requirements .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.20
7 Characteristics and measurements .26
7.1 Test conditions .26
7.2 Location.26
7.3 Transmitting 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 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

61603-8-1  IEC:2003(E) – 3 –
Figure 1 – System concept. 9
Figure 2 – IEC 61603 band allocation.10
Figure 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
Figure 9 – Source_block stream.15
Figure 10 – Source_info stream .16
Figure 11 – Block alignment .17
Figure 12 – Parity check matrix .18
Figure 13 – Error correction code block.18
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.21
Figure 18 – XOR gates.22
Figure 19 – Scramble pattern generator .22
Figure 20 – QPSK mapping.23
Figure 21 – Baseband filter characteristics.24
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
Figure 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
Figure 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
Figure B.4 – Sub-frame structure of full-band mode .47
Figure B.5 – Sub-frame structure of half-band mode .50

– 4 – 61603-8-1  IEC:2003(E)
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_info.16
Table 6 – Reed-Solomon code parameter .17
Table 7 – Header bit field .20
Table 8 – Marking and contents of specifications .28
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 – 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.
...

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 vidéo et de signaux similaires par
rayonnement infrarouge –
Partie 8-1: Signaux audio numériques et similaires

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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 vidéo et de signaux similaires par
rayonnement infrarouge –
Partie 8-1: Signaux audio numériques et similaires

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 33.040.20; 33.160.99 ISBN 978-2-88912-443-5
– 2 – 61603-8-1  IEC:2003
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 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 requirements . 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 Transmitting 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 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 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 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
Figure 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
Figure 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
Figure 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 .
...