SIST EN 62943:2018

SLOVENSKI STANDARD
SIST EN 62943:2018
01-marec-2018
Vidna svetloba svetilniškega sistema za multimedijske aplikacije (IEC 62943:2017)
Visible light beacon system for multimedia applications (IEC 62943:2017)
Signalsystem mit sichtbarem Licht für Multimedia-Anwendungen (IEC 62943:2017)
Système de balise de lumière visible pour applications multimédias (IEC 62943:2017)
Ta slovenski standard je istoveten z: EN 62943:2017
ICS:
33.160.60 9HþSUHGVWDYQLPXOWLPHGLMVNL Multimedia systems and
VLVWHPLLQRSUHPD]D teleconferencing equipment
WHOHNRQIHUHQFH
35.100.10 )L]LþQLVORM Physical layer
SIST EN 62943:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62943:2018

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SIST EN 62943:2018


EUROPEAN STANDARD EN 62943

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2017
ICS 33.160.60; 35.100.10

English Version
Visible light beacon system for multimedia applications
(IEC 62943:2017)
Système de balise de lumière visible pour applications Signalsystem mit sichtbarem Licht für Multimedia-
multimédias Anwendungen
(IEC 62943:2017) (IEC 62943:2017)
This European Standard was approved by CENELEC on 2017-04-11. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 62943:2017 E

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SIST EN 62943:2018
EN 62943:2017
European foreword
The text of document 100/2850/FDIS, future edition 1 of IEC 62943, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 62943:2017.
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2018-01-11
national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with (dow) 2020-04-11
the document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62943:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated :
IEC 62471 NOTE Harmonized as EN 62471.

2

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SIST EN 62943:2018




IEC 62943

®


Edition 1.0 2017-03




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Visible light beacon system for multimedia applications



Système de balise de lumière visible pour applications multimédias



















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ISBN 978-2-8322-4016-8
ICS 33.160.60; 35.100.10



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62943:2018
– 2 – IEC 62943:2017  IEC 2017
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 System outline . 7
4.1 Interface points and protocol rules . 7
4.2 Functions . 9
5 Physical layer . 9
5.1 Wavelength . 9
5.2 Data rate . 9
5.3 Data transmission system . 9
5.4 Spurious . 10
6 Frame layer . 10
6.1 Single frame transmission . 10
6.1.1 Frame structure . 10
6.1.2 Preamble (PRE). 10
6.1.3 ID length (IDLEN) . 11
6.1.4 ID type (IDTYPE) . 11
6.1.5 CRC . 11
6.2 Multiple frames transmission . 11
6.2.1 Frame structure . 11
6.2.2 Preamble (PRE). 12
6.2.3 Sequence number (SEQNO) . 13
6.2.4 Partition type (PTYPE) . 13
6.2.5 BODY . 14
6.2.6 CRC . 14
6.3 Idle pattern . 15
7 Measurement method . 15
Annex A (normative) Code management concerning frame type, ID and DATA . 16
Annex B (informative) Background, application examples, and safety . 17
B.1 General . 17
B.2 Background of this standard . 17
B.3 Application examples . 17
B.3.1 General . 17
B.3.2 Multimedia applications utilizing positional information . 17
B.3.3 Application in public spaces . 17
B.3.4 Cooperation with other services . 18
B.3.5 Application to setting of equipment . 18
B.3.6 Application to AV and multimedia devices . 18
B.3.7 Application to entertainment . 18
B.4 Safety . 18
Annex C (informative) Purpose, justification, possible applications, and installation
examples . 19
C.1 Purpose . 19
C.2 Justification . 19
C.3 Possible applications . 19

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SIST EN 62943:2018
IEC 62943:2017  IEC 2017 – 3 –
C.3.1 Genereal . 19
C.3.2 Visible light beacon system for multimedia devices receiving location-
dependent advertisement multimedia information from digital signage . 19
C.3.3 Visible light beacon system for guiding and navigation system. 20
C.3.4 Visible light beacon system for multimedia devices receiving multimedia
information from a TV backlight . 20
C.4 Installation examples . 21
C.4.1 General . 21
C.4.2 Visible light beacon system for indoor navigation for the visually
impaired (february 2012) . 21
C.4.3 Visible light beacon system for indoor smartphone users (april 2013) . 21
Bibliography . 23

Figure 1 – Visible light beacon system for multimedia applications. 7
Figure 2 – Visible light beacon system for multimedia applications: structure and
interface point . 8
Figure 3 – I-4PPM signal waveform . 9
Figure 4 – I-4PPM Slot and Symbol . 10
Figure 5 – Frame structure for single frame transmission . 10
Figure 6 – Preamble for single frame transmission . 11
Figure 7 – Frame structure for a multiple frames transmission . 12
Figure 8 – Body field in Single frame compatible mode . 14
Figure C.1 – Visible light beacon system for multimedia devices receiving location-
dependent advertisement multimedia information from digital signage . 19
Figure C.2 – Visible light beacon system for guiding and navigation system . 20
Figure C.3 – Visible light beacon system for multimedia devices receiving multimedia
information from a TV backlight . 20
Figure C.4 – Visible light beacon system for indoor navigation for the visually impaired . 21
Figure C.5 – Visible light beacon system for indoor smartphone users . 22

Table 1 – ID length . 11
Table 2 – Length of CRC and generator polynomial . 11
Table 3 – Possible length of concatenated data . 12
Table 4 – Preambles for multiple frames transmission . 13
Table 5 – Sequence number . 13
Table 6 – Partition type . 14
Table 7 – Field composition for each length of ID/DATA in Single frame compatible
mode . 14

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SIST EN 62943:2018
– 4 – IEC 62943:2017  IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

VISIBLE LIGHT BEACON SYSTEM FOR MULTIMEDIA APPLICATIONS

FOREWORD
1) The International 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 fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC
Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance 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 elements 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 62943 has been prepared by IEC technical committee 100: Audio,
video and multimedia systems and equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
100/2850/FDIS 100/2857/RVD

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.

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SIST EN 62943:2018
IEC 62943:2017  IEC 2017 – 5 –
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" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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 printer.

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SIST EN 62943:2018
– 6 – IEC 62943:2017  IEC 2017
VISIBLE LIGHT BEACON SYSTEM FOR MULTIMEDIA APPLICATIONS



1 Scope
This International Standard aims at establishing a unified standard concerning the lower
communication layer common to multimedia applications, and does not deal with the upper
communication layer which depends upon individual applications.
This document specifies a unidirectional visible light communication protocol using visible
light, named "visible light beacon system for multimedia applications". This document does
not specify the type of receivers. Dimming can be done by such methods as pulse width
control or amplitude control, but the dimming is out of the scope of this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
visible light beacon transmitter
transmitter utilizing visible light beacon of visible light transmission standard
3.2
visible light beacon receiver
receiver utilizing visible light beacon of visible light transmission standard
3.3
visible light beacon system
unidirectional beacon system utilizing visible light as its carrier
3.4
ID resolution
resolution of information related to the ID
3.5
ID resolution server
server capable of ID resolution from inquired ID

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SIST EN 62943:2018
IEC 62943:2017  IEC 2017 – 7 –
3.6
carrier
signal consisting of a visible light in the case of visible light communication for transmission of
information through (wired or wireless) communication media
3.7
modulation
processing and transforming of a carrier according to information in order to enable the
information to be transmitted efficiently and correctly through communication media
3.8
frame
assembly of information continued for a certain length of time
3.9
preamble
signal to inform reception side about preparation and time position of start of the frame
3.10
communication protocol
set of rules decided for mutual communication between transmitters and receivers
3.11
encode
adapting the transmitted data array to be consistent with the transmission protocol
4 System outline
4.1 Interface points and protocol rules
The IF-a (interface point a) part in the visible light beacon system in Figure 1 shall be used.
Visible light
beacon
transmitter
IF-a
Visible light
beacon receiver
IEC

Figure 1 – Visible light beacon system for multimedia applications
Figures 2 a), b), c) and d) represent interface standard points between system structure
figures and element systems of visible light beacon system for multimedia applications.
• Figure 2 a) is the whole structure (standard structure) of most common visible light beacon
system for multimedia applications. The visible light beacon receiver sends the beacon
received from a visible light beacon transmitter to an ID resolution server, obtains the
address of the information providing server where target information exists, and obtains
the target information from the information providing server using the address.

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SIST EN 62943:2018
– 8 – IEC 62943:2017  IEC 2017
• Figure 2 b) is the system structure (degeneracy system structure 1) for obtaining target
information by implementing ID resolution in the beacon receiver, referring to ID resolution
table incorporated in the visible light beacon receiver, and directly accessing the
information providing server based on the result.
• Figure 2 c) is the system structure (degeneracy system structure 2) for preliminarily
caching target information, in addition to ID resolution table, in the visible light beacon
receiver, and directly indicating the selected target information based on the received
beacon.
• Figure 2 d) is the system structure (direct information delivery structure) for the visible
light beacon receiver to directly receive delivery of target information itself from visible
light beacon transmitter.
The interface point a common to Figure 2 a) to 2 d) shall be used.

Visible light Visible light
beacon beacon
transmitter transmitter
ID
IF-b
resolution
server
IF-a IF-a
ID
URL
URL
Information Information
Visible light
Visible light
providing providing
beacon receiver
beacon receiver
server server
Information
Information
IF-c
IF-c
IEC
IEC


a) Standard structure b) Degeneracy system structure 1
Visible light Visible light
beacon beacon
transmitter transmitter
IF-a
IF-a
Visible light Visible light
Cache
beacon
beacon within
receiver
receiver
receiver
IEC
IEC


c) Degeneracy system structure 2 d) Direct information delivery structure
Figure 2 – Visible light beacon system for multimedia applications:
structure and interface point
All the system structures above assume that there is one visible light beacon transmitter. If
there are multiple light sources and the visible light beacon receiver receives signals from
multiple light sources at the same time, it can cause interference. The interference problem
can be solved by aligning the optics of a transmitter and a receiver. However, the alignment is
outside the scope of this document.

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SIST EN 62943:2018
IEC 62943:2017  IEC 2017 – 9 –
4.2 Functions
The visible light beacon transmitter can transmit information. The transmitted information can
be either arbitrary data or an ID code. The ID code system used is selectable, and various
services can be provided or enjoyed through ID resolution (drawing information related to ID).
5 Physical layer
5.1 Wavelength
The wavelength of the system optical output shall be in the visible range with peak
wavelength from 380 nm to 780 nm.
5.2 Data rate
Data rate shall be 4,8 kb/s with tolerance of ±0,5 %.
5.3 Data transmission system
The transmission system for modulation of visible light should use Inverted 4PPM encoding.
Such a modulation method is called I-4PPM (Inverted 4PPM). Figure 3 shows I-4PPM signal
waveform. Although the signal is represented by square wave, actually waveform shaping is
required to comply with spurious rules as individual electronic instruments. The same applies
to Figure 4.
The bit ordering of the transmitted data after preamble is LSB (least significant bit) first,
meaning that the least significant bit is transmitted first.
Transmission order: last
Transmission order: first
Data   0(LSB) 0 0 1 1 0 1 1
4PPM signal
1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
Bright
Dark
IEC

Figure 3 – I-4PPM signal waveform
With waveform intensities a and b shown in Figure 3, signal amplitude and modulation index
are defined as below.
signal amplitude = b – a
modulation index = (b – a)/b
The 4PPM encoding system distributes evenly a specific length of time defined as symbol
time (D ) to 4 slots (C ), it converts a pulse of 1 slot width in 1 symbol time, and transmits
1 1
information of 2 bits assigned to existing slot time position of the pulse. Encoding rule of slot
time position are illustrated in Figure 4. For example:
Symbol time D = 2 × (1/4 800) = 0,416 ms
1
Slot time C = D / 4 = 0,104 ms

1 1
a
b

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SIST EN 62943:2018
– 10 – IEC 62943:2017  IEC 2017

Data 0 (LSB) 0 0 1 1 0 1 1
I-4PPM signal 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1
1
0
Slot
(C1)
2 bit = 1 symbol = 4 slot
Symbol (D1)
IEC

Figure 4 – I-4PPM Slot and Symbol
5.4 Spurious
The details of this item are defined in each application standard. For example, visible light
beacon transmitters using LED lighting systems should be defined in electrical spurious
standard for lighting equipment.

6 Frame layer
6.1 Single frame transmission
6.1.1 Frame structure
Figure 5 shows a frame structure for a single frame transmission. The frame consists of
preamble (PRE), ID length (IDLEN), ID type (IDTYPE), ID and/or data (ID/DATA), and cyclic
redundancy code (CRC) fields.

PRE IDLEN IDTYPE ID / DATA CRC
6 bit 3 bit 5 bit variable length variable length
Start of frame Body End of frame
IEC

Figure 5 – Frame structure for single frame transmission
6.1.2 Preamble (PRE)
The pattern of "1" in three sequential slots followed by nine "0" slots, which does not occur by
I-4PPM encode of data, is set as a preamble for single frame transmission as shown in
Figure 6.

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SIST EN 62943:2018
IEC 62943:2017  IEC 2017 – 11 –
Transmission order: first Last
1 1 1 0 0 0 0 0 0 0 0 0
Bright
Dark
3 symbols length (= 6 bit)

IEC
Figure 6 – Preamble for single frame transmission
6.1.3 ID length (IDLEN)
The IDLEN field indicates the length of the following ID/DATA field as shown in Table 1.
Table 1 – ID length
IDLEN [bit] Length of ID/DATA [bit]
[MSB] 000 [LSB] reserved
001 32
010 64
011 128
100 256
101 512
110 1 024
111 reserved

6.1.4 ID type (IDTYPE)
The IDTYPE field indicates how the information in the ID/DATA field should be parsed. When
the IDTYPE value is 0, the ID type is a default type which does not require the access to a
server. On the other hand, when the IDTYPE value is not 0, a server may be accessed to
obtain necessary information.
6.1.5 CRC
The CRC field checks IDLEN, IDTYPE, and ID/DATA fields. The length of the CRC field
depends on length of bits to be checked as shown in Table 2. Since visible light beacon
system for multimedia applications uses a unidirectional communication, incapable of
submitting re-transmission requests, received data is discarded if errors are detected.
Table 2 – Length of CRC and generator polynomial
Length to be checked Length of CRC Generator polynomial
≤ 16 8 X8+X7+X6+X4+X2+1
≤ 64 12 X12+X11+X3+X2+X+1
≤ 256 16 X16+X15+X2+1
> 256 24 X24+X23+X18+X17+X14+X11+X10+X7+X6+X5+X4+X3+X+1

6.2 Multiple frames transmission
6.2.1 Frame structure
...