G-602
6
4
Edge blending procedures
4.1 Determine source signal resolution and number of projector
a
、
The image size and watching distance are two major factors to determine source signal
resolution and number of the projectors.
b
、
If the screen size is 20m and the watching distance is 5m, the signal pixel pitch should be
around 5mm, then the system resolution is about 20m/5mm=4000. It means the system
resolution should be around 4000 pixels in width and the vertical resolution should follow the
projector native resolution. If 1080p projector is used, the system resolution should be
3840x1080 or 4096x1080 if signal source can support this output timing.
c
、
After determine the system resolution, please make sure all the equipment in the signal pipe
line should be able to support this resolution or higher. It includes signal source output, edge
blending processor and the total resolution of the projectors after edge blending.
d
、
If user uses 8x XGA projector with 250 overlap pixels, the total projector resolution after edge
blending will be 1024*8-250*7=6442 pixels. It means it is enough to use XGA resolution
projectors in this case. If user uses FHD or WUXGA high end projectors with watching distance
at 5m, the final video quality will be very similar if signal source is only 4k resolution.
e
、
VNS can provide service free of charges to help customers in making project plan, including
system configuration, type of projector, signal source and installation data.
4.2 System connection
a
、
HDMI Loop Out port is for daisy chain connection. It is not an input port.
b
、
Only the input signal from HDMI-A input port can be looped out.
