ASTRO VG-871 - LCAPTION4 [20 H 45 H]: Closedcaption Data Acquisition

Chapter 2 INDIVIDUAL FORMATS FOR VG CONTROL COMMANDS
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2.38 LCAPTION4 [20H 45H]: ClosedCaption data
acquisition
Function: This command gets the ClosedCaption data of the designated program
number. When the program number is 0, it reads out the data from the
buffer RAM. When the program has any number from 1001 to 2000, the
command reads out the data from the fixed data. When the program
number is 9999, the command reads the data from the command work
RAM.
Sequence: Type 3
Command:
STX
1 byte
02H
VG4CMD
1 byte
FDH
LCAPTION4
2 bytes
20H 45H
Program number
1 to 4 bytes
“0” to “2000”, “9999”
ETX
1 byte
03H
Fig. 2-38-1
Data:
STX
1 byte
02H
TRDT
1 byte
10H
Mode
1 byte
“0” to “8”
,
1 byte
2CH (Delimiter)
Data
1 or 2 bytes
“0” to “20”
,
1 byte
2CH (Delimiter)
Interval
1 or 2 bytes
“0” to “60”
ETX
1 byte
03H
Fig. 2-38-2