6.
Scan Mode
6.1.
Partial Scan Mode
□
In SXGA and VGA modes, the frame rate can be increased by limiting the vertical scan area.
□
Set the mode and start position using UVC Commit Control and communication commands.
Partial Scan Setting
Partial Scan Area
1/2, 1/4, 1/8 (by UVC Commit Control)
Partial Scan Start Position
Address : 40 – 41h
Example
Normal Shutter Mode
①
:
V Blanking
：
27H fixed
②
:
Partial Scan Start Position
：
120H
③
:
Partial Scan Effective Line Number
：
482H(Mode 1/2)
④
: Total Lines
：
509H(
①＋③
)
Fixed Trigger Shutter Mode ( USB3.0 Shutter speed 1/1000s (45H))
①
:
V Blanking
：
54H fixed
②
:
Partial Scan Start Position
：
120H
③
:
Partial Scan Effective Line Number
：
482H(Mode 1/2)
④
: Shutter Speed Line Number : 45H
⑤
: Total Lines
：
581H(
①＋③
+
④
)
Start Position
Effective Line Number
Start Position
Effective Line Number
