ASTRO VG-871 - LNIF4 [20 H 81 H]: NTSC VBI Infoframe Data Acquisition

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2.95 LNIF4 [20H 81H]: NTSC VBI InfoFrame data
acquisition
Function: This command gets the NTSC VBI InfoFrame data of the designated
program number. When the program has any number from 1001 to 2000,
the command reads out from the fixed data. When the program number is
9999, the command reads the data from the command work RAM.
Sequence: Type 3
Parameters:
STX
1 byte
02H
VG4CMD
1 byte
FDH
LNIF4
2 bytes
20H 81H
Program number
1 to 4 bytes
“0” to “2000”, “9999”
ETX
1 byte
03H
Fig. 2-95-1
Data:
STX
1 byte
02H
TRDT
1 byte
10H
On/Off
1 byte
"0"=OFF "1"=ON
,
1 byte
2CH (Delimiter)
Type
1 byte
"6"=6
,
1 byte
2CH (Delimiter)
Version
1 byte
"1"=1
,
1 byte
2CH (Delimiter)
Pes Len
1 to 2 bytes
"1" to "27"
,
1 byte
2CH (Delimiter)
#1
Pes 1
2 bytes
"00" to "FF"
,
1 byte
2CH (Delimiter)
#27
Pes 27
2 bytes
"00" to "FF"
ETX
1 byte
03H
Fig. 2-95-2