LD-V8000 Videodisc Player
•
•
•
Computer
Level III programs are developed on a
computer. Commands are sent to the
player directly from the computer to
control a specific interteractive videodisc.
In addition to providing interactive control
of the videodisc player, the computer can
also send graphic overlays to the video
monitor, provide access to a
computer database, etc.
(See
Chapter 4
and
Appendix A
.)
For detailed information about ExternalComputer Control of the LD-V8000, see
Chapter 4 and Appendix A of this manual.
LEVEL
3
Level III programs are used to control the videodisc player from a computer attached to the
player’s RS-232C port. The Level III mnemonic command set is used to develop interactive
programs for the LD-V8000. (See
Appendix A for the list of mnemonic commands available
on the LD-V8000.) Level III mnemonic commands are also used to control the LD-V4400,
CLD-V2400, LD-V2200, LD-V4300D,and the discontinued LD-V4200. Level III is used when a
program designer wants users to have access to a large computer database, along with video
and audio material. Level III requires that a computer be connected to every videodisc player.
A file server may be used to network the computers at the various workstations.
RS-232 cable to
RS-232 port on
back of player
Chapter One • LD-V8000 Level I & III
Level III — External Computer Control
1-6
TP 113 v. 2.1 • 2/93
LD-V8000 Level I & III User’s Manual
Figure 1-D