VP-727xl Text Overlay Protocol
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12 VP-727xl Text Overlay Protocol
Table 18 includes the Text Overlay Protocol.
Each command includes three parameters: P1, P2 and P3.
Table 18: Text Overlay Protocol of the VP-727xl
Functions
Command
P1
P2
P3
Comments
1
Display Buffer
Configuration
T12ED ** **
**
Page No.
of Buffer
Page
Width
Page
Height
No of page <= 7
Buffer size limitation: Width * Height *
(Page No+1) <= 70KB
2
V-Position
T13EC **
Vertical
Location
NA
NA
1~2047
3
H-Position
T14EB **
Horizontal
Location
NA
NA
1~2047, Non Used
4
Text Color Effect
T16E9 **
Mode
NA
NA
Mode:
0: Transparency
1: Partial Transparency
2: Normal
5
Text RGB Color
T17E8 ** **
**
R
G
B
RGB color 0-255
6
Text Partial
Transparency
Color
T18E7 ** **
**
R
G
B
RGB color 0-255
7
Background Color
Effect
T19E6 **
Mode
NA
NA
0: Transparency
1: Partial Transparency
2: Normal
8
Background RGB
Color
T1AE5 ** **
**
R
G
B
RGB color 0-255
9
Background Partial
Transparency
Color
T1BE4 ** **
**
R
G
B
RGB color 0-255
10 TextOverlay On
T1CE3
NA
NA
NA
Enable TextOverlay
11 TextOverlay Off
T1DE2
NA
NA
NA
Disable TextOverlay
12 Blank Time
T1EE1 **
Seconds
NA
NA
Time between Two Strings, 0-30Sec
13 Text Bitmap
Download Start
T1FE0
NA
NA
NA
PC start to send bit string
14 TextOverlay Mode T20DF **
Mode
NA
NA
0: Scroll
1: Static
15 Text H-Shift (only
available for static
mode)
T21DE ** **
Page
H
locatio
n
NA
Text placement on H location
Page: Which string active
H location < 32767
16 Speed
T22DD ** **
Refresh
rate
Step
Size
NA
Refresh rate: 10-100ms
(Slow – fast)
Step Size: 1-10 pixels
Command handshake: Only leading character for command start and no ending code.
Bit map file format: It is a raster scan image with 1 bit. 0 for background and 1 for text. The 0, 1 is ASCII
code.
T1FE0001100010010010010011110010010; send bitmap as following image
