scope:

This document contains the technical description of the transmission technique, coding language, and user interface for one-way broadcast teletext-service applications in North America.

PREFACE

This preface is not part of the standard

This standard for the North American Basic Teletext Specification

(NABTS) is published jointly by the Electronic Industries Association (EIA) and the Canadian Videotext Consultative Committee (CVCC). This specification represents one of three major teletext systems in use today. The publication of this standard is to document the NABTS to assist those desiring to implement the service and is not an endorsement of NABTS over any other system/service.

The NABTS is based on the following documents:

"North American Broadcast Teletext Specification" published by CBS, June 22,1981

Provisional "Broadcast Specification 14" Government of Canada, Department of Communication, June 19,1981.

Joint ANSI (BSR X3. 110)/CSA (T500) Standard "Video/Teletext Presentation Level Protocol Syntax ( North American PLPS)", 1983 (NALPS).

" Characteristics of Teletext Systems" CCIR Report 957, Vol. XI, Part 1, Broadcast Service( Television), XVth Plenary Assembly, Geneva 198