ITU R BT 653:1998
ITU R BT 653:1998 Teletext Systems
Table of Contents
ANNEX1...Characteristicsofteletextsystems1Introduction
2Definitionoftheteletextservice
3Alayeredmodelfordescribingteletextsystems
4Transmissioncharacteristics
4.1Dataline
4.2Dataunit
4.3Datapacket
4.4Datagroup
5Presentationlayercharacteristics
5.1Repertoires
5.2Sourcecoding