UD100 User Guide Document: UD100-3
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13.2. Image distortion
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If the content aspect ratio is different from the screen aspect ratio, it will cause image distortion.
User has below alternatives:
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User can adjust aspect ratio through video wall [Overlap] settings.
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Full screen display but some content will be drawn to outside border and missing.
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Draw the image into screen and keep some blanking border at some borders.
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If the content aspect ratio is the same as screen aspect ratio, user can take below actions to get
no distortion full screen display through below actions:
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If the signal source is from PC, user can set EDID resolution with the same aspect ratio as
the screen.
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If the signal source output resolution is not the same aspect ratio as the screen, user
needs to set signal playback with full screen display but not keep original aspect ratio.
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In PC display card settings, user needs to select [Full screen] display but not [Keep
original aspect ratio]. GeoBox will expand the image to full screen automatically.
13.3. EDID Setting
Selective EDID setting for input source resolution is added into GeoBox. The settings will be applied
to individual processing module on select input port. Each processing module needs to set EDID
separately. Below are some guideline for EDID setting:
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GeoBox can support big range of input signal timing
—from XGA up to 8k/2k @30Hz. In order to
get the best video performance, user needs to select the best input signal resolution.
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Different source resolution may show different final image aspect ratio. User can utilize different
EDID setting to change signal source timing and get different output aspect ratio.
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User can select different EDID directly from OSD list or use [Customize] function to create Non-
VESA standard timing.
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If the signal is from PC, user can set customized EDID in GeoBox to let PC output expected
resolution. Some PC may not follow GeoBox EDID resolution setting and require customized
output setting from display card or re-boot.
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User can create some timings that is outside VESA standard, such as 7680x2160/30Hz.
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PC or laptop may not output required timings due to hardware limitation or driver issue. User
may need to do custom setting inside PC and re-boot to get desired output.
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The optimized EDID resolution should be the final resolution after edge blending. For instance, if
user uses three WXGA projectors for edge blending with 320 overlapped pixels, then the best
signal for this setup will be 1280*3-320*2=3200.
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PC may memory the first EDID when it is connected with GeoBox. Some PC may not follow new
EDID setting in GeoBox. Below are some suggestions that may fix this kind of issue.
