EN 61866:1997

FOREWORD
INTRODUCTION
1 General
  1.1 Scope
      1.2.1 Definitions
      1.2.2 Abbreviations
  1.3 Presentation conventions
2 ITTS packet structure
  2.1 Introductory remark
  2.2 ITTS packet format
  2.3 Packet-header field descriptions, bytes 0 - 7
      2.3.1 Packet header byte 0: language number and application
            item
      2.3.2 Packet-header byte 1-2: packet index
      2.3.3 Packet-header byte 3-4
      2.3.4 Packet-header byte 5
      2.3.5 Packet-header byte 6: function controls
      2.3.6 Packet-header byte 7: character set control
  2.4 Data field description, bytes 8-47
      2.4.1 GRAPHICS packet
      2.4.2 DATA packet
3 ITTS data presentation
  3.1 Character repertoire
  3.2 Serial textline attributes and character controls
      3.2.1 Serial text line attributes
      3.2.2 Decoder and character-display alternatives
  3.3 1-line display functions
      3.3.1 Validation of 12 characters from 40-character text
      3.3.2 Character validation
  3.4 HORIZONTAL SCROLL function for 12-character displays
  3.5 CLEAR SCREEN
  3.6 Colours
      3.6.1 Default colours
      3.6.2 Highlighting related colour constraints
  3.7 Menus
      3.7.1 Vertical and horizontal menus
      3.7.2 Function control via commands
      3.7.3 Interactive commands
      3.7.4 IC command table
  3.8 Dynamically redefinable character (DRC) packet
      3.8.1 DRC pattern transmission format, single font mode
      3.8.2 DRC pattern transmission format, double size font mode
  3.9 Data integrity
Annexes
A (informative) Application examples for 2-line coding
B (informative) Sample outline for 12-character validation
C (informative) Language support and character sets
D (informative) Bibliography

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.