IEC 61866:1997 PDF

Name: IEC 61866:1997 — Audiovisual systems - Interactive text transmission system (ITTS)
SKU: IEC 61866:1997
Price: 35 EUR
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Audiovisual systems - Interactive text transmission system (ITTS)

Название (английский):

IEC 61866:1997

Audiovisual systems - Interactive text transmission system (ITTS)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 109
Дата публикации:: 14 августа 1997 г.
Издание:: IEC IS 61866 edition 1 version 1
ICS:: 33.160.01

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Описание (английский):

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.

Abstract

Overview

Key Topics

ITTS Packet Structure The standard details the format and composition of ITTS data packets, including:
- Packet headers (bytes 0–7) describing language, application item, packet index, function controls, and character set selection.
- Data fields (bytes 8–47) supporting text, graphics, and interactive commands.
Text and Graphics Encoding ITTS supports a rich repertoire of characters and graphical elements, including:
- Latin-based and extended Latin alphanumeric character sets.
- Mosaic and lined graphics font sets enabling graphical text enhancement.
- Japanese font tables and language indexing for multilingual support.
Interactive Display Functions The standard specifies practical display features such as:
- One-line display functions with text validation and horizontal scrolling.
- Screen clearing and color management, including default colors and highlighting constraints.
- Menu systems with vertical and horizontal layouts supporting interactive command processing.
Character Set Control ITTS allows dynamic redefinition of characters via Dynamically Redefinable Character (DRC) packets in single and double font size modes, enhancing flexibility in character display.
Data Integrity and Validation Provisions ensure data integrity through validation routines, maintaining reliable and consistent transmission of interactive text information.

Applications

IEC 61866:1997 is instrumental in applications involving interactive audiovisual content where synchronized text and sound data transmission is required. Typical use cases include:

Broadcasting and Media Production Encoding and transmission of captions, subtitles, and interactive text on prerecorded audiovisual media.
Multimedia Interfaces Delivery of interactive text menus and graphics in consumer electronics, such as digital TV receivers and set-top boxes.
Assistive Technologies Accessibility features enabling hearing-impaired users to interact with audiovisual content through synchronized text displays.
Multilingual Content Delivery Supporting content in multiple languages with flexible character sets and interactive commands for user-friendly navigation.
Communication Equipment Facilitating text-based interactive information alongside audio streams in communication devices.

Related Standards

Professionals working with IEC 61866:1997 may also find the following IEC standards relevant to ensure comprehensive system compatibility and interoperability:

IEC 60050 – International Electrotechnical Vocabulary (IEV): Provides consistent terminology used within ITTS and related audiovisual systems.
IEC 60027 – Letter Symbols to be Used in Electrical Technology: Defines graphical and literal symbol standards complementing character encoding.
IEC 60417 – Graphical Symbols for Use on Equipment: Offers standardized graphical symbols vital for interface representation.
IEC 60617 – Graphical Symbols for Diagrams: Supports graphical schematic representations linked with audiovisual system components.

By integrating IEC 61866:1997 with these related standards, developers and engineers can ensure robust, interoperable interactive text transmission capabilities across various equipment and media platforms.

Keywords: IEC 61866, Interactive Text Transmission System, ITTS, audiovisual systems, text encoding, packet structure, multimedia interfaces, character sets, interactive menus, data integrity, IEC standards, audiovisual media, subtitles transmission, interactive display functions.

Технические детали

Технический комитет: TC 100 - Audio, video and multimedia systems and equipment
SKU: IEC 61866:1997

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Каталог

IEC 60050-161:1990/AMD2:1998

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