EN 61866:1997

Audiovisual systems - Interactive text transmission system (ITTS)

Interactive text transmission system (ITTS) provides the mechanism for encoding sound associated data on prerecorded media and for the transport of such data across equipment interfaces. Defines the higher layers of ITTS, i.e. those system characteristics which are independent of the recording or interconnection medium.

Audiovisuelle Systeme - Interaktives Textübertragungssystem (ITTS)

Systèmes audiovisuels - Système de transmission de textes interactifs (ITTS)

Système de transmission de textes interactifs (ITTS) fournit le mécanisme permettant de coder des données audio sur des supports préenregistrés et de transporter ces données sur les interfaces appartenant à ces matériels. Définit les couches supérieures de l'ITTS, c'est-à-dire les caractéristiques du système qui sont indépendantes du moyen d'enregistrement ou d'interconnexion.

Audiovisual systems - Interactive text transmission system (ITTS) (IEC 61866:1997)

General Information

• Status: Published
• Publication Date: 21-Oct-1997
• Withdrawal Date: 30-Jun-1998
• ICS: 33.160.99 - Other audio, video and audiovisual equipment
• Technical Committee: CLC/TC 100X - Audio, video and multimedia systems and equipment and related sub-systems
• Drafting Committee: IEC/TC 100 - IEC_TC_100
• Parallel Committee: IEC/TC 100 - IEC_TC_100
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 22-Oct-1997
• Completion Date: 22-Oct-1997
• Ref Project: SIST EN 61866:1999 - Audiovisual systems - Interactive text transmission system (ITTS)

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-1999
Audiovisual systems - Interactive text transmission system (ITTS) (IEC
61866:1997)
Audiovisual systems - Interactive text transmission system (ITTS)
Audiovisuelle Systeme - Interaktives Textübertragungssystem (ITTS)
Systèmes audiovisuels - Système de transmission de textes interactifs (ITTS)
Ta slovenski standard je istoveten z: EN 61866:1997
ICS:
33.160.99 Druga avdio, video in Other audio, video and
avdiovizuelna oprema audiovisual equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
INTERNATIONAL
Première édition
STANDARD
First edition
1997-08
Systèmes audiovisuels –
Système de transmission de textes interactifs (ITTS)
Audiovisual systems –
Interactive text transmission system (ITTS)
 IEC 1997 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

61866 © IEC:1997 – 3 –
CONTENTS
Page
FOREWORD . 7
INTRODUCTION. 9
Clause
1 General. 11
1.1 Scope. 11
1.2 Definitions and abbreviations . 11
1.2.1 Definitions.11
1.2.2 Abbreviations. 11
1.3 Presentation conventions. 13
2 ITTS packet structure. 13
2.1 Introductory remark. 13
2.2 ITTS packet format . 13
2.3 Packet-header field descriptions, bytes 0 – 7 . 19
2.3.1 Packet-header byte 0: language number and application item. 19
2.3.2 Packet-header byte 1-2: packet index . 21
2.3.3 Packet-header byte 3-4. 23
2.3.4 Packet-header byte 5. 29
2.3.5 Packet-header byte 6: function controls. 33
2.3.6 Packet-header byte 7: character set control . 39
2.4 Data field description, bytes 8-47. 41
2.4.1 GRAPHICS packet . 41
2.4.2 DATA packet. 45
3 ITTS data presentation. 49
3.1 Character repertoire. 49
3.2 Serial textline attributes and character controls . 61
3.2.1 Serial text line attributes. 61
3.2.2 Decoder and character-display alternatives. 63
3.3 1-line display functions. 65
3.3.1 Validation of 12 characters from 40-character text. 69
3.3.2 Character validation. 69
3.4 HORIZONTAL SCROLL function for 12-character displays . 69
3.5 CLEAR SCREEN
..................................................................................................................... 71
3.6 Colours. 71
3.6.1 Default colours. 73
3.6.2 Highlighting related colour constraints. 73
3.7 Menus. 73
3.7.1 Vertical and horizontal menus. 75
3.7.2 Function control via commands. 77
3.7.3 Interactive commands. 77
3.7.4 IC command table. 77
3.8 Dynamically redefinable character (DRC) packet . 89
3.8.1 DRC pattern transmission format, single font mode. 89
3.8.2 DRC pattern transmission format, double size font mode . 91
3.9 Data integrity. 91

61866 © IEC:1997 – 5 –
Page
Tables
1 Latin-based alphanumeric character set. 51
2 Extended Latin-based alphanumeric character set . 53
3 Mosaic and lined graphics font set . 55
4 Japanese font table 1 . 57
5 Japanese font table 2 . 59
6 Conversion from ITTS character codes to JIS font numbers . 61
7 Serial textline attributes. 63
8 Foreground colour serial textline attributes. 65
9 Background colour serial textline attributes. 65
10 1-line display controls . 67
11 Colour look up table. 73
Figures
1 TEXT packet content .15
2 RUNTIME MENU
packet content. 15
3 GRAPHICS TEXT packet content. 17
4 GRAPHICS RUNTIME MENU packet content. 17
5 DATA packet content. 19
C.1 Character set selection within a text line – Example of mixed graphics and
alphanumeric line. 105
C.2 Character set selection within a text line – Example of mixed alphanumeric, Kanji
and Katakana line . 107
C.3 Language selection by indexing a maximum of seven languages out of a total
of 256 possible languages . 107
Annexes
A (informative) Application examples for 2-line coding . 93
B (informative) Sample outline for 12-character validation . 99
C (informative) Language support and character sets . 103
D (informative) Bibliography. 109

61866 © IEC:1997 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________
AUDIOVISUAL SYSTEMS –
INTERACTIVE TEXT TRANSMISSION SYSTEM (ITTS)
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international cooperation on all questions concerning standardization in the electrical and electronic fields. To this
end and in addition to other activities, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any divergence
between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the
latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61866 has been prepared by subcommittee 100C: Equipment and
systems in the field of audio, video and audiovisual engineering, of 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
100C/114/FDIS 100C/132/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.
Annexes A, B, C and D are for information only.

61866 © IEC:1997 – 9 –
INTRODUCTION
Distribution and reproduction of digital sound recordings can be accompanied by text
associated with the sound track. Such data can be, for instance, album and track titles, lyrics
or information about artists and performers.
ITTS covers application requirements for pre-recorded media, digital broadcasting and remote
controls. Several display options are supported for information readout: 21-, 2- and 1-line
displays of 40 characters each, as well as a 12-character display window.
The user interface consists of displayed text and provision for direct access to information by
means of related function control keys or a cursor positioned over a menu item and a SELECT
function key.
Various character sets can be used in the system. Up to 40 (horizontal) × 21 (vertical)
alphanumerical characters can be presented on a screen. For other fonts, like Kanji, the
number of fonts that can be presented on a screen depends on the font size which is defined
together with the font table.
ITTS uses the Latin-based alphanu
...