Kystar U4Pro User manual

U4Pro
Multi-picture splicing processor
Version: v3.1
Release date: February 2022
Manual
Beijing KYSTAR Technology Co.,LTD
Professional ultra hd video display,
Control integrated solution providers and operational
service providers
Beijing KYSTAR Technology Co.,LTD
Professional Ultra HD Video Display
Control system integrated solution and service provider

Multi-Image Splicing Processor User Manual
Statement
Thank you for choosing our products.
All rights of the manual are reserved by the company and no copy, delivery, distribution or
storage of any form of the content is allowed without written permission from the company. The
company reserves the right of modifications and improvements of any product function described
in the document without prior notice.
Any possible affiliated control software of the product is only for your usage while all its
rights are reserved by the company. You are allowed to copy the software but only limited to your
personal usage. If the software is to be applied to other purposes, in particular commercial
purposes, please contact us. The company reserves the right of investigate and affix legal
liabilities of any infringement act.
Please read the manual carefully before using. Any improper operation may cause damage to
the product. It is operated with electricity and sufficient attention should be attached. Our
company bears no responsibility for any property loss and personal injury incurred from any
improper operation failing to follow the instructions in the manual. If the provision herein
conflicts with local laws or regulations, the latter shall prevail.
It means that you accept the statement above if you use the product. If not, please contact
with the seller and return the product following relevant procedures.
Certification Description
“CE” Certification
EN 55022:2010
EN 55024:2010
EN 61000-3-3:2013
EN 61000-3-3:2014
EN 0950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013
“FCC” Certification
FCC Part 15
ANSI C63.4:2014
“ROHS” Certification
EPA 3050B:1996,EN1122:2001
EPA 3052:1996,EPA 3060A
EPA 7196,EPA 3540C,EPA 8270C
Version Information
Version: v3.1
Issue Date: February,2022

Multi-Image Splicing Processor User Manual
SAFETY PRECAUTIONS
For your safety, please read this section carefully.
Power
Power supply of the device for normal operation is 100-200V AC.
Please make sure that the product is operated within the voltage range.
High voltage
High voltage devices are contained.
Do not dismantle without professionals
The device is not equipped with repair parts which aimed for
maintenance by customer himself, so do not open chassis and operate
by yourself which may lead to unrecoverable damage of the device. If
maintenance is required, please contact after-sales service personnel.
Assure sound grounding
For your safety, please assure that power line is grounded soundly.
Keep away from strong magnetic field, engine and transformer
For normal operation of the device, please stay away from strong
magnetic field, motor and transformer.
Guard against damp
Keep operational environment dry. If the device becomes damping
inadvertently, do not power the device and use it after being dried.
Keep away from explosives
Please do not use the product in combustible or explosive
environment.
Prevent liquid or conductive fragments getting into the chassis
Liquid or metal fragments should be stopped from getting into the
case. If so, the device should be powered off immediately and power
supply can only be allowed after clearance of foreign bodies.

Multi-Image Splicing Processor User Manual
Table of Contents
1. Product Introduction................................................................................ 1
2. Hardware Introduction.............................................................................2
2.1 Front Panel.......................................................................................2
3. Device Debugging................................................................................... 4
3.1 Device Connection.......................................................................... 4
3.2 Debugging Steps..............................................................................5
3.3 Case Study....................................................................................... 8
3.4 Function key:................................................................................. 14
3.5 Advanced Menu.............................................................................18
4. Technical Parameters............................................................................. 19
5. Q&A.......................................................................................................19
Appendix: Graphics copy mode and extended mode setting....................21
1. AMD Video Card.............................................................................21
2. NVIDIA Video Card........................................................................21

Multi-Image Splicing Processor
1
1. Product Introduction
The multi-image mosaic processor is a high-end video processing equipment
developed and manufactured by our company for LED large screen display,
performance and leasing, conference room, studio and so on.
The product adopts CPT+ FST splicing technology targeted for small pixel LED
display to guarantee uniformity and synchronicity of splicing. The Super Resolution
Zoom-in Technology can help eliminate jaggies and reduce the fuzzy sense and
out-of-focus phenomenon due to image magnification.
The product enjoys the following features:
1. Support various signal input includes conventional DVI, VGA, HDMI, CVBS,
and SDI ; support 4K Ultra HD input and realize large screen point-to-point
display.
2. Stand-alone can support user-defined layout of pixel 10.4 million , and support
output pixels up to 15360 horizontally or 7680 vertically.
3. Support free-form four-image layout and realize central control of main screen,
side screen, floor tile or canopy of the stage in an easy way.
4. Support signal echoing and view real-time input and output signals by
software.
5. Support multi-image preview and output monitoring.
6. Support seamless switch of signal and mode and provide over 10 kinds of
transition special effects.
7. Support overlay of multi-group editable and global image-texts and captions.
8. Support luma key, image transparency adjustment and edge feathering.
9. Support warm backup of multi-level input signal.
10. Support multi-machine synchronous cascade output.

Multi-Image Splicing Processor
2
2. Hardware Introduction
2.1 Front Panel
① ② ③ ④⑤ ⑥⑦ ⑧
⑨⑩ ⑪ ⑫ ⑬
1POWER: AC 220V POWER switch; ON indicates that the power supply is ON, and
OFF indicates that the power supply is OFF.
2LCD color screen: information display; Displays device and debugging information.
3ADJUST: ADJUST knob; You can select the information in the color screen through the
knob and quickly adjust various parameters, inverseClockwise to decrease, clockwise to increase,
press OK.
4OK: Confirm button to confirm debugging information.
5MENU: MENU button, you can enter the main MENU interface for device debugging.
6INFO: information query button; Example Query the real-time status of input signals.
7WIN: Screen information button; Display screen signal source and switch screen signal
source.
8S1-S6: Signal source button; The input source behind the device is under the main menu
screen, and the parameter input screen is a number1-5 and the back key.
9: Return or cancel the button.
10 : navigation buttons; Click to enter the navigation mode.
11 FUNC: Common function buttons; Click to enter the interface of common functions.
12 OUT: output selection key; The output can be black screen, blue screen, or Normal.

Multi-Image Splicing Processor
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13 M1-M6: Shortcut mode call button; The shortcut mode button is displayed on the main
menu interface, and the parameter input interface is displayed belowThe numbers 6-0 and the
clear key.
2.2 Back panel
① ② ③ ④
⑤ ⑥ ⑦ ⑧ ⑨
1MONTOR :Pre-monitoring channel; Used to monitor input signal source or output
output display content.
2OUTPUT :Programming output channel; Pure digital DVI-D output, connected with
sending card, etc.
3LAN1:100m network control port; It can debug the equipment through software when it
is connected to the computer's 100 mbit/s network port.
4AC 100-220V: power interface; It can be connected to ac power supply of 100-220V.
5INPUT S5, S6: extended INPUT; Expandable with two conventional inputs or one
4KHDMI input.
6INPUT S1-S4: conventional INPUT; Input interface includes one set of DVI, one set of
HDMI, two sets of VGA and CVBS.
7LOOP: DVI LOOP exit; Loop out S1-DVI signal, which can be used for multi-machine
cascade.
8LAN2: GIGABit network control port; You can debug the device and implement the
echo function.
9COM: RS232 control interface; Connect with the serial port of the computer, debug the

Multi-Image Splicing Processor
4
equipment through the upper computer software.
3. Device Debugging
3.1 Device Connection
Device connection could be divided into three parts: power connection, signal
connection and control connection (used for software debugging).
Power connection: device power supply. Connection method: connect power
cord to power plug.
Signal connection: the method transferring signal from signal source to LED
large screen. Connection method: signal source (e.g.: computer)→Splicing Processor
→ Sending cards → Large screen.
Control connection: connect computer with device control port and debug device
connection method. There are three connection methods
(1) Connect 100MB network control port with splicer LAN1 port, which can set
device software.
(2) Connect computer gigabit network port with splicer LAN2 port, which can
not only set device but also echo signal source image.
(3) Connect one crystal head of serial port line which is randomly donated by
device with splicer COM port, and plug DB9 into computer serial port. Any kind of
method among the three can realize device software control.
Connection diagram is as follows:
Signal source
Monitor display
(Connection Selectable)
Display screen
Computer (Connection Selectable)
Spicing Processor
Sending card

Multi-Image Splicing Processor
5
3.2 Debugging Steps
Step 1: Click “MENU” to enter into main menu interface and click “Device Mode” to select
splicing mode: copy mode, horizontal mosaic, vertical mosaic and cross mosaic.
Note: Copy mode: all output contents are consistent; horizontal mosaic: content
of all output are arranged horizontally; vertical mosaics: contend of all output are
arranged vertically; cross mosaics: contend of all output are arranged in two rows and
two columns.
Step 2: select suitable splicing mode and click “OK”; get back to main menu
interface to select “Screen parameter” and enter into its setting interface. Set loaded
screen point of each output interface and click “Confirm” after inputting, and then
screen splice is finished.
Note: there are two ways for number input:
(1) Adjust by rotate knob. Step length can be adjusted by “×1”“×10”“×100”, for
instance, “×100”means that number of rotate knob increases by 100 each time.
Device Mode
Copy Output
Horizontal Splicing
Vertical Splicing
Cross Splicing
OUT
Note:
All output displays are
the same.
Confirm
Cancel
×1
×10
×100
OUT1
OUT2
OUT3
OUT4
Screen Parameters
Horizontal Size: 1920
Vertical Size:1080
Rotate knob to select output
Click “OK”to adjust
Select by Finger key

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(2) Input by number of the front panel. For example, of the key
refers to figure 1.
Step 3: get back to main menu interface to select “Image layout” and enter into
image number selecting interface to select image number required to be set.
Note: This step can be skipped for signal image. For multi-image, it’s OK if
image number and item requirement are in consistent. Following operations can be
taken to set when layout are not in consistent.
Step 4: Click “OK” and return to main menu interface; select “Image parameter”
and enter into its setting interface to set size and position of each image.
Step 5: Click “OK” and return to main menu interface; select “Clipped view” to enter into
its setting interface to set size and position of each image.
×1
×10
×100
Image Parameters
Select by Finger key
Horizontal Position: 0
Vertical Position: 0
Horizontal Size: 1920
Vertical size: 1080
Rotate knob to select output
Click “OK”to adjust
Image 4
Image 2
Image 3
Image 5
Image 6
Image 1
Clipped View
Select by Finger key
Image 1
Image 3
Image 2
Image 6
Image 4
Image 5
×1
×10
×100
Horizontal Position: 0
Vertical Position: 0
Rotate knob to select output
Click “OK”to adjust
Vertical Size: 1080
Horizontal size: 1920

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Note: This step should be skipped if full display of signal source is required on
large screen; while if certain signal source of multi-image is needed to be extracted,
only setting of signal source image is required; if horizontal size or vertical size is 0, it
means no local extraction is required in this direction.
Step 6: Click “OK” and return to main menu interface; select “Save setting” to
enter into Data storage interface; select any mode and click “OK” to save data.
Note: Mode 1 is default startup data of device boot; it’s suggested that the most
common mode or that required by device boot should be saved to Mode 1.
At this point, basic device debugging is completed. If there is other requirement,
repeat the operation and save it as other mode.
After device debugging, just call saved data according to different condition
requirements in later stage.
Data call is divided into forms:
(1) For Shortcut key call, only click of “M1-M6” in front panel is required,
which is convenient when mode scenario is few.
(2) For User mode call of Main Menu, click “MENU” and select “User Mode”
to enter into its extraction interface. Then select needed mode and click “OK”.
Save Setting
Current mode does not exist!
Save mode 1
Device mode
Image layout
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Mode 7
Mode 8

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3.3 Case Study
Device debugging steps are explained by following cases.
Case 1: screen size is 2688×1664 and loading transmitting card is shown as
picture below:
Requirement: whole computer desktop should be displayed completely.
1440 1248
Diagram of loaded transmitting card Display Effect
Debugging Steps:
Step 1: click “MENU” and enter into main menu interface to select “Cross
Mosaic” of the first item “Device mode”.
Note: since four transmitting cards are in a 2×2 layout, cross mosaic is needed
then.
896
768
Device Mode
Copy Output
Horizontal Splicing
Vertical Splicing
Cross Splicing
OUT1
Note:
All output interfaces are
combined horizontally.
OUT2
OUT3
OUT4

Multi-Image Splicing Processor
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Step 2: Click “OK” to return to main menu interface; select “Large screen
parameters” to set size of each output interface.
Note: Input according to corresponding transmitting card size of each output
interface. For OUT1, its horizontal size is 1440 and vertical size 896; for OUT2, they
are 1248 and 896 respectively; for OUT3, they are 1440 and 768; for OUT4, 1248 and
768.
Step 3: After inputting, click “Confirm” and return to main menu interface. The
large screen splicing is finished, select signal source needed to display on screen and
click corresponding key. For instance, for display of computer signal on large screen
and connection of computer DVI interface with “S1-DVI” port of the back device,
just click “S1” in the front which means choosing the signal to display on the screen.
Step 4: After selecting signal and normal display of large screen, save all setting
data. Click “MENU” to enter into main menu interface, and then get into “Save
setting” interface to select “Mode 1” and click “OK”. Things will be fine when it
suggests saving successfully.
Screen Parameters
OUT1
OUT2
OUT3
OUT4
Select by Finger key
Horizontal Size: 1920
Vertical size: 1080
Rotate knob to select output
Click “OK”to adjust
Confirm
Cancel
×1
×10
×100
Save Setting
Save Mode 1
Device Mode
Image Layout
Current mode does not exist!
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Mode 7
Mode 8

Multi-Image Splicing Processor
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Note: Mode 1 is default startup data of device boot; it’s suggested that the most
common mode should be saved to Mode 1 and the device can save 32 kinds of modes
at most.
Case 2: Screen size is 6880×576 and loading transmitting card is shown as
picture below:
Requirement: 1) Whole computer desktop should be displayed completely..
2) Screen is divided into three parts with proportion of 1:2:1.
1920 1920 1920 1120
Diagram of loaded transmitting card
Debugging steps:
Step 1: Click “MENU” to enter into main menu interface. Select “Device mode”
and then “Horizontal Mosaic”.
576
Device Mode
Copy Output
Horizontal Splicing
Vertical Splicing
Cross Splicing
OUT1
Note:
All output interfaces are
combined horizontally.
OUT2
OUT3
OUT4
Display effect 1
Display effect 2

Multi-Image Splicing Processor
11
Note: since four transmitting cards are in a horizontal layout, horizontal mosaic
is needed then.
Step 2: Click “OK” to return to main menu interface; select “Large screen
parameters” to set size of each output.
Note: Input according to corresponding transmitting card size of each output
interface. For OUT1, its horizontal size is 1920 and vertical size 576; for OUT2, they
are 1920 and 576 respectively; for OUT3, they are 1920 and 576; for OUT4, 1120 and
576.
Step 3: After inputting, click “Confirm” and return to main menu interface. The
large screen splicing is finished, select signal source needed to display on screen and
click corresponding key. For instance, for display of computer signal on large screen
and connection of computer DVI interface with “S1-DVI” port of the back device,
just click “S1” in the front which means choosing the signal to display on the screen.
Step 4: After selecting signal and normal display of large screen, save all setting
data. Click “MENU” to enter into main menu interface, and then get into “Save
setting” interface to select “Mode 1” and click “OK”. Things will be fine when it
suggests saving successfully.
Screen Parameters
OUT1
OUT2
OUT3
OUT4
Select by Finger key
Vertical Size:1080
Confirm
Cancel
×1
×10
×100
Horizontal size:1920
Rotate knob to select output
Click “OK”to adjust
Save Setting
Save Mode 1
Device Mode
Image Layout
Current mode does not exist!
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Mode 7
Mode 8

Multi-Image Splicing Processor
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Note: Mode 1 is default startup data of device boot; it’s suggested that the most
common mode should be saved to Mode 1 and the device can save 32 kinds of mode
at most.
For above operation which has fulfilled the first requirement of the program,
namely splicing of the whole screen, image is displayed completely and correct data
are saved. For the second requirement which is that screen is divided into three parts
with proportion of 1:2:1, only further setting on operation above is needed.
Step 5: Click “MENU” and enter into main menu interface and select “Image
layout” then Layout 3.
Note: Default layout of the device is three equal parts. If it is desired, there is no
need to carry out step 6. If not, following operations are required.
Step 6: Click “OK” to return to main menu interface and select “Image
parameter” to enter into its setting interface. Since required image proportion is 1:2:1,
the size of image 1, namely the left one is 1720×576, image 2 which is the middle one
is 3440×576 and image 3, the right one, is 1720×576. Since image 1 starts from the
left, its horizontal position is 0. In the same way, image 2 is 1720 and image 3 is
1720+3440=5160. Due to the reason that vertical position is calculated from the top,
vertical position of three images are all 0. Above all, image 1’s horizontal position is 0,
vertical position is 0, horizontal size is 1720 and vertical size is 576; the four
parameters of image 2 are 1720, 0, 3440 and 576 respectively and those of image 3
are 5160, 0, 1720 and 576. After inputting, just click “OK”.
Image Parameter
Image 1
Select by Finger key
Image 2
×1
×10
×100
Image 3
Rotate knob to select output
Click “OK”to adjust
Vertical Size: 1080
Vertical Position: 0
Horizontal Size: 1920
Horizontal Position: 0

Multi-Image Splicing Processor
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Step 7: According to operation above, screen body has been divided into three
images with proportion of 1:2:1. Default display content of each image is S1. If
different signal sources should be designated for each image, click of front
panel to enter into image switch interface. Select image by rotate knob and choose
signal by click of S1-S6 of front panel. For example, if signal of image 2 is S6, click
“WIN” to enter into image switch, then adjust rotate knob to image 2 (it’s selected if
padded) and finally click “S6” of front panel. After selecting each image, save final
data which is the same with step 4.
Up to now, program debugging is finished. If any display method is needed in
later stage, it’s just OK to call saved mode. There are two ways for mode call. When
mode number is not big, just click M1-M6 of front panel which are shortcut key for
mode call; when mode number is big (over 6), user mode call should be made. Click
“MENU” to enter into main menu interface, then select “User mode” and call needed
mode.

Multi-Image Splicing Processor
14
3.4 Function key:
Brief explanation of function key:
INFO: Information query key. Click this key and enter into its interface showing
whether all signal sources are inputting normally. Its interface is shown as below. Red
light means signal is lost while green one shows signal is normal.
WIN: Image key. Click this key to enter into its interface and signal source
selection can be made in following interface. Taking image 3 as instance, click “WIN”
to enter into image switch interface which shows current signal sources of three
images. If signal source switch is needed, rotate the knob first to select the image and
switch by “S1-S6” of the front panel.
Information-Signal Condition

Multi-Image Splicing Processor
15
OUT: Output condition key. Click the key to enter into its interface with three
output options: blank screen, blue screen and normal screen. Selection of blank screen
means all output interfaces and large screen are blank; blue screen means all those are
blue; and normal screen refers to normal image output.
FUNC: Function key. Click this key to enter into its interface which includes:
brightness adjustment, special effect switch, VGA adjustment, image matting setting,
edge feather, transparency setting, intelligent warm backup, preview monitor, IP
setting, serial port, freeze frame, local and global, color space, input brightness and
switch time. The following are explanations of those common functions.
1. Brightness adjustment
The device supports 1-255 stairs brightness adjustment. Brightness of all screen
body can be adjusted synchronously to meet customers’ different brightness
adjustment requirements for different conditions.
2. Special effect switch
The device support 16 kinds of special effect switch: round-in, round-out,
diamond-in, diamond-out, upward cross, downward cross, left cross, right cross,
upper right cross, lower right cross, upper left cross, lower left cross, horizontal comb
and vertical comb. All those can meet requirements of different scene switch.
3. Special effect time
Set image switch times or switch time among different modes with the range of
0.2s-3s.
4. VGA adjustment
Since VGA signal belongs to analogue one, it tends to causes deviations among
common functions. The product has two kinds of VGA corrections which are
automatic correction and manual correction.
5. Image matting setting
Output condition control
黑屏
蓝屏
正常
Note: Display blank screen

Multi-Image Splicing Processor
16
Image matting setting is to extract some caption or images and delete the rest
parts, which is often used in caption production. Taking red caption against black
background as an example, the black base map fades away with only red caption left
after image matting setting.
6. Edge feather
By image edge blanking, it makes transition more smooth and soft, and make
image overlay more harmonious and vivid.
7. Transparency setting
The product can adjust image transparency and even point-by-point adjustment to
make application scene more colorful.
8. Intelligent warm backup
User can set priority of backup signals. When current signal fails, the system will
detect automatically and call backup signal immediately; if signal returns to normal,
the system will call original signal intelligently. Parallel system constructed by this
function can guarantee reliability of scene.
9. Input brightness
Make brightness adjustment to single input source.
Note: Above-mentioned brightness adjustment is for whole large screen. While
input brightness adjustment is targeted for single signal source and only brightness of
adjusted signal source will change with other parts unchanged.
10. Color space
Setting input signal source S1 and S2, for instance RGB, YCbCr and other color
space.
11. IP setting
Set device IP address for software debugging.
12. Local and global
Switch local display or global display of certain image on the condition that data
of local display is already set.
13. Freeze frame
Set stillness or movement of certain image which is often used for field change
or background switch.
14. Serial port setting
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