IEC PAS 62298:2002

IEC/PAS 62298
Edition 1.0
2002-01
TeleWeb Application Profile 1
Reference Decoder
PUBLICLY AVAILABLE SPECIFICATION
INTERNATIONAL Reference number
ELECTROTECHNICAL
IEC/PAS 62298
COMMISSION
IEC/PAS 62298
Edition 1.0
2002-01
TeleWeb Application Profile 1
Reference Decoder
PUBLICLY AVAILABLE SPECIFICATION
INTERNATIONAL Reference number
ELECTROTECHNICAL
IEC/PAS 62298
COMMISSION
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
TELEWEB APPLICATION PROFILE 1
REFERENCE DECODER
FOREWORD
A PAS is a technical specification not fulfilling the requirements for a standard, but made available to the

public and established in an organization operating under given procedures.

IEC-PAS 62298 was submitted by the EACEM (European Association of Consumer Electronics Manufacturers)
and has been processed by IEC technical committee 100: Audio, video and multimedia systems and
equipment.
The text of this PAS is based on the This PAS was approved for
following document: publication by the P-members of the
committee concerned as indicated in
the following document:
Draft PAS Report on voting
100/407/PAS 100/438/RVD
Following publication of this PAS, the technical committee or subcommittee concerned will investigate
the possibility of transforming the PAS into an International Standard.
An IEC-PAS licence of copyright and assignment of copyright has been signed by the IEC and EACEM
and is recorded at the Central Office.
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 co-operation 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 specifications, 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 PAS may be the subject of patent rights.
The IEC shall not be held responsible for identifying any or all such patent rights.
Page i
GENERAL SECRETARIAT
EACEM Technical Report
TR-045-r01
Title:
TeleWeb Application Profile 1 Reference Decoder
Date: 23 April 2001
EACEM - International Association,  Diamant Building,  Bd. A. Reyers 80,  B-1030 BRUSSEL
Phone: +32 2 706 85 50   Fax: +32.2 706 85 51   E-mail: info@eacem.be

Version History
Version Date Author Description

1.0 21 Dec 2000 Alexander Wass First released version.

1.1 31 Jan 2001 Jan van Lier Add relation between logo and certification.

2.0 5 Feb 2001 Jo Vandale Adapting to the new EACEM references codes.

2.1 / r00 15 Feb 2001 Jo Vandale Adding the new EACEM template (Cover, Header, Footer, …)
3.0 / r0 1 23 April 2001 Jo Vandale EACEM Project Team 1.4 approved version.

- 2 -
Contents
1 Introduction. 4

2 References. 4

3 Profile 1 Reference Decoder . 4

3.1 TeleWeb Reference Receiver. 4

3.2 TeleWeb Reference Browser . 4

Software Design. 5

3.3 Hardware Requirements. 5
4 Logo connected to Profile 1 Reference Decoder . 5
5 Contacts . 5
6 Schematic Overview . 6

- 3 -
1 Introduction
TARA Systems developed on request of the TeleWeb Project a Reference Decoder (Receiver & Browser) for

TeleWeb profile 1. With the PC based GDI Display Simulator TeleWeb content can be displayed. This Profile 1

Reference Decoder is the basis for further porting activities to specific embedded hardware platforms. Further

information can be found in reference [4]

2 References
[1] EACEM TR-046: "TeleWeb Application Part 1, General Description".

[2] EACEM TR-047: "TeleWeb Application Part 2, Profile 1, Enhanced".
[3] EACEM TR-048: "TeleWeb Application Part 3, Delivery Methods".
[4] TARA Systems GMBH: "Available Documentation": Software Specifications for GDI, HTML-DOM
Implementation, Receiver, Memory Management, HTML Viewer, Application. Content Generation
Guidelines
3 Profile 1 Reference Decoder
The TeleWeb Profile 1 Reference Decoder consists of a Reference Receiver and a Reference Browser. This
Reference Decoder is platform independent and is the basis for further porting activities to specific embedded
hardware platforms. A PC based Graphical Device Interface Display Simulator is available for displaying TeleWeb
content. A TeleWeb Logo as pictured in section 4 is connected to this Reference Decoder. More information is
given in references [1], [2], [3] and [4]. Documentation can be achieved via the contact addresses in section 5.
A schematic overview of the Profile 1 Reference Decoder and GDI Display Simulator is given in section 6.
3.1 TeleWeb Reference Receiver
• Data transmission using IDL format B.
• Based on DVB Data Carousels
• FEC and CRC
• Prioritised File Database
• Pre-Filtering of pages
3.2 TeleWeb Reference Browser
• Implements a browser based on the requirements as specified in [2]
• Easy Navigation with left, right, up, down, select, colour and number keys
• Bookmark Management
• History Support
- 4 -
Software Design
• Object Oriented ANSI C Design

• Platform independent
• Prepared for easy porting to embedded 16/32-bit platforms

• PC based development with slicer and display simulator

• Automatic test system
3.3 Hardware Requirements
• 16 or 32-bit controller
• 640x480 display for content
• min. 188 colours
• ~ 500 Kbytes for code (including GDI and fonts)
• >5 Mbytes RAM for database
• 1 Mbytes RAM workspace
4 Logo connected to Profile 1 Reference Decoder

5 Contacts
EACEM Brussels / Belgium Internet address: http//www.eacem.be
TARA Systems GmbH Munich / Germany Internet address: http//www.tara-systems.de
TeleWeb Project Internet address: http//www.superteletext.tv
- 5 -
6 Schematic Overview
TeleWeb Reference Receiver
IDL format B
Data
Files
File System Interface
TeleWeb Reference
File
Browser
Information
Decoding Requests
HTML
Rendering
Analyzer
Decoded Structures
Engine
Data
Object
Object Requests
Structure
Requests
Layout
Text
Display
Requests
Memory Management
Requests
Font Engine
GDI
Allocation
Calls
Requests GDI
Calls
Graphical Device Interface (GDI)
Memory Interface
GDI Display Simulator
- 6 -
GENERAL SECRETARIAT
EACEM Technical Report
TR-046-r02
Title:
TeleWeb Application Part 1, General Description
Proposed ETSI Title:
“TeleWeb Application Part 1, General Description”
Proposed ETSI keywords:
“TeleWeb, Superteletext, Browser, Enhanced, Internet, Interactive,
Profile, Overview, Teletext, HTML”
Date: 18 May 2001
EACEM - International Association,  Diamant Building,  Bd. A. Reyers 80,  B-1030 BRUSSEL
Phone: +32 2 706 85 50   Fax: +32.2 706 85 51   E-mail: info@eacem.be

History
Ver. Date Author Description
Initial split up from the original TeleWeb specification v1.6 in the TP1.4
0.1 15 Feb 2000 David Tarrant
meeting in Brussels
0.2 20 Juli 2000 Jo Vandale Adaptations during the EACEM TP1.4 and TeleWeb meeting in Rennes

0.21 8 Aug 2000 Jo Vandale Adaptations during the EACEM TP1.4 meeting in Brugge

0.22 31 Aug 2000 Jo Vandale Minor adaptations during the TeleWeb meeting in Rousset

0.3 24 Oct 2000 Jo Vandale Combining the requirement tables of profile 1.
0.4 2 Nov 2000 Jo Vandale Adding the review remarks on version 0.3 by David Tarrant.
1.0 3 Nov 2000 Jo Vandale Released version after review in the TeleWeb group.
1.9 4 Dec 2000 Jo Vandale Rework after specification changes of the steering board.
2.0 11 Dec 2000 Jo Vandale Released version after review in the Technical TeleWeb group.
2.1 31 Jan 2001 Jo Vandale Released version after minor changes during the TM of January.
3.0 5 Feb 2001 Jo Vandale Adapting to the new EACEM reference codes.
3.1 / r00 15 Feb 2001 Jo Vandale Adding the new EACEM template (Cover, Header, Footer, …)
23 April Adaptations resulting from the last Technical Meeting
4.0 / r01 Jo Vandale
2001 EACEM Project Team 1.4 approved.
Making nexTView links optional as a result of the EACEM TC support
4.1 / r02 5 May 2001 Jo Vandale
group meeting.
- 8 -
Contents
1 Scope . 12

2 References . 12

3 Definitions and abbreviations . 13

3.1 Definitions . 13

3.2 Abbreviations. 13

4 General description of TeleWeb . 14
4.1 Aims. 14
4.2 Overview . 14
4.3 OSI seven-layer model. 15
5 Documentation structure. 15
6 Application Profiles. 16
6.1 Profile 1 – Enhanced. 16
6.2 Profile 2 - Interactive TeleWeb. 17
6.3 Profile 3 – Internet TeleWeb . 17
7 Display model. 17
7.1 Display planes. 18
7.1.1 Types .
...