ETSI ETS 300 706 ed.1 (1997-05)

Enhanced Teletext specification

DE/JTC-TTEXT-EACEM

Specifikacija za izboljšani Teletext

General Information

• Status: Published
• Publication Date: 22-May-1997
• Technical Committee: BROADCAS - EBU/CENELEC/ETSI on Broadcasting
• Current Stage: 12 - Completion
• Due Date: 14-May-1997
• Completion Date: 23-May-1997
• Ref Project: SIST ETS 300 706 E1:2003 - Enhanced Teletext specification

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 706 E1:2003
01-december-2003
Specifikacija za izboljšani Teletext
Enhanced Teletext specification
Ta slovenski standard je istoveten z: ETS 300 706 Edition 1
ICS:
33.050.30 Oprema za teleks, teletekst, Equipment for telex, teletext,
telefaks telefax
SIST ETS 300 706 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 706 E1:2003

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SIST ETS 300 706 E1:2003
EUROPEAN ETS 300 706
TELECOMMUNICATION May 1997
STANDARD
Source: EBU/CENELEC/ETSI JTC Reference: DE/JTC-TTEXT-EACEM
ICS: 33.020
Key words: Broadcasting, data, transmission, Teletext, TV
Union Européenne de Radio-Télévision
European Broadcasting Union
Enhanced Teletext specification
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification:
No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997.
© European Broadcasting Union 1997.
All rights reserved.

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Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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Contents
Foreword .9
1 Scope .11
2 Normative references.12
3 Definitions, symbols and abbreviations.12
3.1 Definitions .12
3.2 Symbols .13
3.3 Abbreviations .13
4 TV lines usable as data lines.14
4.1 When multiplexed with a composite video signal .14
4.2 When not multiplexed with a composite video signal .14
5 Signalling characteristics.15
5.1 Signalling method .15
5.2 Data Signal Levels .15
5.3 Bit Rate .15
5.4 Spectrum of data pulses.15
6 Teletext packet identification.15
6.1 Clock run-in.15
6.2 Framing code.16
6.3 Timing reference.16
7 Organization of Teletext data elements .17
7.1 Elements of a Teletext packet .17
7.1.1 Synchronization sequence .17
7.1.2 Packet address.17
7.1.3 Data bytes .17
7.1.4 Packet types.17
7.2 Elements of a page.18
7.2.1 Definition of a page .18
7.2.2 Page header packet .19
7.2.3 The body of a page .19
7.3 Elements of a magazine .19
7.4 Elements of the service .20
8 Byte coding and error protection .21
8.1 Odd parity .21
8.2 Hamming 8/4 .21
8.3 Hamming 24/18 .22
9 Coding of data packets .23
9.1 Overview of packet types.23
9.2 Reserved bits.26
9.3 Directly displayable data packets.26
9.3.1 Page header.26
9.3.1.1 Page number .27
9.3.1.2 Page sub-code.27
9.3.1.3 Control bits.27
9.3.1.4 Data bytes.28
9.3.2 Packets X/1 to X/25.29
9.4 Page enhancement data packets .29
9.4.1 Packet X/26.30

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9.4.2 Packet X/28/0 Format 1. 30
9.4.2.1 Page Function and Page Coding . 30
9.4.2.2 Coding for basic Level 1 Teletext pages. 31
9.4.2.3 Coding for data broadcasting pages . 34
9.4.2.4 Coding for other types of page. 34
9.4.3 Packet X/28/0 - Format 2. 34
9.4.4 Packet X/28/1 . 35
9.4.5 Packet X/28/2 . 36
9.4.6 Packet X/28/3 . 36
9.4.7 Packet X/28/4 . 37
9.5 Magazine-Related Page Enhancement Data Packets . 38
9.5.1 Packet M/29/0. 38
9.5.2 Packet M/29/1. 39
9.5.3 Packet M/29/4. 40
9.6 Packets for Page Linking . 41
9.6.1 Packets X/27/0 to X/27/3 for Editorial Linking . 41
9.6.2 Packets X/27/4 and X/27/5 - Format 1 - for compositional linking in
presentation enhancement applications . 43
9.6.3 Packets X/27/4 to X/27/7 - Format 2 - for compositional linking in data
broadcasting applications . 46
9.7 General Coding of packets 30 and 31. 47
9.8 Broadcast Service Data Packets. 48
9.8.1 Packet 8/30 Format 1 . 48
9.8.2 Packet 8/30 Format 2 . 50
10 System Components for Presentation. 51
10.1 Basic Teletext - Presentation Levels 1 and 1.5. 51
10.2 Enhanced Teletext - Presentation Levels 2.5 and 3.5 . 52
10.3 Page Specific Enhancement Data . 52
10.3.1 Enhancements via X/26/0 - 15. 53
10.3.2 Enhancements via X/28/0 Format 1 . 53
10.3.3 Enhancements via X/28/1. 53
10.3.4 Enhancements via X/28/4. 53
10.4 Magazine Specific Enhancement Data . 53
10.5 Public Enhancement Data. 54
10.5.1 Object Definition Pages . 54
10.5.1.1 Page Format . 54
10.5.1.2 Pointer Table. 54
10.5.1.3 Object Definition Area . 55
10.5.1.4 Page Number Identification. 56
10.5.2 DRCS Downloading Pages. 56
10.5.2.1 Page Format . 56
10.5.2.2 Page Number Identification. 56
10.6 Magazine Organization Table . 56
10.6.1 Page Format. 56
10.6.2 Object Page Association. 58
10.6.3 DRCS Page Association. 58
10.6.4 Object Links. 58
10.6.4.1 Default Objection Invocation . 59
10.6.5 DRCS Links . 60
10.6.6 Number of Enhancement Pages . 61
10.7 Links between Enhanced System Components. 62
10.7.1 Linking to Object and DRCS Pages via the MOT. 62
10.7.2 Linking to Object and DRCS Pages via Packets X/27/4 and X/27/5 . 63
11 System Components for Navigation . 64
11.1 Navigation via FLOF. 64
11.1.1 Principles . 64
11.1.2 Additional components . 64
11.2 Navigation via TOP . 65
11.2.1 Principles . 65
11.2.2 Additional components . 66
11.3 Magazine Inventory Page. 67

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11.3.1 Principles.67
11.3.2 Format of the Magazine Inventory Page .67
11.3.3 Page Function Coding.68
11.3.4 Sub-page range.71
12 Presentation Levels.71
12.1 Display Components.72
12.2 Spacing attributes .76
12.3 Non-spacing attributes and additional characters.80
12.3.1 Use of Packets X/26.80
12.3.2 Active Position.82
12.3.3 Row Address triplets .82
12.3.4 Column Address triplets .89
12.4 Colour Map .96
12.5 Side Panels.96
12.5.1 Panel position.97
12.5.2 Panel size.97
12.5.3 Data transmission and addressing.97
12.5.4 Display rules.98
13 Objects .98
13.1 Object definitions .98
13.2 Display priority order .99
13.3 Active Objects.99
13.4 Adaptive Objects.99
13.5 Passive Objects .100
13.6 Object invocation .100
13.7 Screen position of Object elements.101
13.8 Default Objects .101
13.9 Object example.102
14 Dynamically Re-definable Characters .103
14.1 Downloading pages .103
14.2 DRCS Character Modes .104
14.2.1 Mode 0 - 12x10x1.104
14.2.2 Mode 1 - 12x10x2.104
14.2.3 Mode 2 - 12x10x4.104
14.2.4 Mode 3 - 6x5x4.105
14.3 Flashing DRCS .105
14.3.1 Mode 0 .105
14.3.2 Modes 1, 2 and 3.105
14.4 DRCS availability .105
14.4.1 Level 2.5.105
14.4.2 Level 3.5.106
15 Character sets and their designation.108
15.1 Overview of designation requirements .108
15.2 Designation of default G0 and G2 sets and national option sub-sets.108
15.3 Second G0 Set Designation and National Option Set Selection.110
15.4 Modified G0 and G2 Character Set Designation .112
15.5 Spacing attributes .113
15.6 Alphanumeric Character Sets.113
15.6.1 Latin G0 Set .114
15.6.2 Latin National Option Sub-Sets .115
15.6.3 Latin G2 Set .116
15.6.4 Cyrillic G0 Set - Option 1 - Serbian/Croatian.117
15.6.5 Cyrillic G0 Set - Option 2 - Russian/Bulgarian.118
15.6.6 Cyrillic G0 Set - Option 3 - Ukrainian .119
15.6.7 Cyrillic G2 Set.120
15.6.8 Greek G0 Set .121
15.6.9 Greek G2 Set .122
15.6.10 Arabic G0 Set .123
15.6.11 Arabic G2 Set .124

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15.6.12 Hebrew G0 Set . 125
15.7 Graphics Character Sets. 126
15.7.1 G1 Block Mosaics Set. 126
15.7.2 G3 Smooth Mosaics and Line Drawing Set. 127
Annex A (normative): Encoding Rules. 128
A.1 Page numbering . 128
A.2 Use of control bits C4 (Erase Page) and C8 (Update Indicator). 129
A.3 Backwards compatibility in X/26 addressing. 129
A.4 Addressing order for enhancement triplets. 129
A.5 Rules for row and screen colours . 130
A.6 Object definition pages . 130
A.7 Rules for the overlapping and interleaving of objects. 130
A.7.1 Overlapping rules . 130
A.7.2 Interleaving rules. 131
A.8 Number of objects per page . 131
A.9 Coding of packets 8/30, Formats 1 and 2. 132
Annex B (normative): Transmission Rules . 133
B.1 Transmission of basic Teletext pages with a page erasure interval. 133
B.2 Transmission order of packets with Y = 26, 27 and 28 . 133
B.3 Serial mode transmission . 133
B.4 Parallel mode transmission . 134
B.5 Transmission of packets 8/30. 134
B.6 Rules for the transmission of presentation enhancement data . 134
B.7 Transmission sequence of enhancement data for page updates. 135
B.8 Rules for the transmission of Magazine Inventory Pages (MIP). 135
Annex C (normative): Decoding Rules. 136
C.1 Relationship between the display planes. 136
C.2 Rules for determining priorities of spacing and non-spacing attributes. 136
C.3 Rules applying to the size attributes . 137
C.4 Interpretation of character set and DRCS table changes at enhanced levels. 138
Annex D (normative): Default operation of decoders. 139
D.1 Page level . 139
D.1.1 Missing packets X/1 to X/25. 139
D.1.2 No packets X/26. 139
D.1.3 Packets X/26 with non-sequential designation codes . 139
D.1.4 No packet X/27/4. 139

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D.1.5 No packet X/28/0 Format 1.140
D.1.6 No packet X/28/1 .140
D.1.7 No packet X/28/3 .140
D.1.8 No packet X/28/4 .140
D.2 Magazine level.140
D.2.1 No packet M/29/0.140
D.2.2 No packet M/29/1.141
D.2.3 No packet M/29/4.141
D.3 Service level .141
Annex E (informative): Encoding aspects .142
E.1 Page numbers for object definition and DRCS data pages.142
E.2 Page Time-Code .142
E.3 Use of packets X/26 in Level 1.5 transmissions .142
E.4 Preferred use of packets X/27/4 and X/27/5 .142
E.5 Character set designation .142
E.6 Use of DRCS characters within objects .143
E.7 Objects in row 24.143
E.8 Limits for global enhancement data .143
E.9 Selection of national option sub-sets.143
E.10 Characters including diacritical marks.
...