version 1.0

1. SStar_PQ Tool Connection

1.1. Open PQ Tool

PQ tool download

Double-click the icon to open it after installation.

Figure1-1 PQ tool icon

1.2. Close Serial Port Printing

Close serial port printing and disconnect before PQ Tool connect to the serial port for communication.

For Takoyaki series,input 11111 in the serial port printing window to stop it.

1.3. Chip Selection

According to the chip and board model you get, select the appropriate chip type in the table below.

Takoyaki selects SsInfinity Series.

Figure1-2 Chip type option

1.4. Tool Configuration

Figure1-3 Configuration and Connection

Select the chip series according to the mark 1 in the figure, and then click the mark 2, which will turn into a green icon when the connection is successful. If not, make sure that the serial port printing is properly closed and disconnected, and then reconnect.

1.5. Read Register Value

Switch to the corresponding band first.

Select any subband.

Enter 0x101e and press Enter.

Click Read Bank.

Check the register value on the right, all zeros or all ffs indicate that the tool is not properly connected.

The reference value is shown in Figure 1-5.

Figure1-4 Read register

Figure1-5 Bank interface

2. Gamma Adjustment

2.1. Read The Original Settings Of The Board

Switch to the gamma subpage and click Read:


2.2. Switch To The Write Page, Adjust The RGB Curve As Required


Click write:


2.3. Save gamma Configuration

Click the button to save the configuration as a TXT file.


2.4. Write The Adjusted GAMMA Configuration File To The Board

Load gamma setting first:


Then write:


The gamma configuration can also be written to the board through the serial terminal (the corresponding gamma file needs to be converted to unix format before writing):

echo gama.TXT 40 > /sys/class/mstar/mdisp/pq

3. CSC Adjustment

3.1. Write The Adjusted CSC Value

Switch to the csc page, adjust the csc value on the right, and click download on the left to see the effect.


3.2. Save Current CSC Settings

Click GenMatrixTbl to save CSC table parameter of the board in CSC_Parameter.txt in PQ Tool root directory, copy the file to system, take effect after writing command as follow:

echo CSC_Parameter.txt 100 > /sys/class/mstar/mdisp/pq


如果是用工具调试也可以保存当前所有的csc设定,然后通过save setting保存当前csc设定:


Then load setting:


3.3. Csc Specific Parameter Description

  1. Switch to CSC subpage.

  2. Reset is used to restore the current parameters to the initial.

  3. Download is used to write the parameters of the current debugging interface to the board.

  4. GenMatrixTbl is used save the CSC table parameters of the current board in the tool`s root directory named CSC_Parameter.txt. Copy the file into system by the command below:

    echo CSC_Parameter.txt 100 > /sys/class/mstar/mdisp/pq
  5. Restore To UI Value is used to read the current data and displayed on the interface.

  6. Save Setting is used to save the current parameters.

  7. Load Setting is used to import the parameters saved by Save Setting and displayed on the interface.

  8. RGB bri corresponds to RGB brightness

  9. Sat is short for saturation, used to modify the overall saturation.

  10. Hue is used to modify the overall tone.

  11. RGB gain means White Balance gain.

  12. Contrast is used to modify the overall displayed contrast.


4. Sharpness Adjustment

  1. Tick 2D Peaking Enable to enable sharpness.

  2. Peaking_Bank_refresh will set the current HVB Band parameter as default value.

  3. Save Peaking to file: Save the sharpness parameters of the current motherboard to the Sharp_Parameter.txt file in the local directory. The command is as follow:

    echo Sharp_Parameter.txt 8 > /sys/class/mstar/mdisp/pq

    If it requires power-off and restart to take effect, manually overwrite the parameters in CSC_Parameter.txt to the following corresponding position in pq.ini.

    Figure4-1 Peaking Parameter

  4. Save Setting is used to save the current parameter to local folder.

  5. Load Setting is used to import the local parameter and displayed on the interface but not be written on the motherboard.

  6. Adjusting the B01 and B02 parameters in H gain direction can modify the sharpness intensity in the horizontal direction.

  7. Adjusting the B01 and B02 parameters in H Coring to improve the edge of the horizontal peaking adjustment.

    Figure4-2 Sharpness

    Figure4-3 H Coring

5. Appendix

Overwrite all adjusted PQ parameters to pq.ini, use the following serial port command to take effect all PQ adjusted items

echo  pq.ini ffff  >   /sys/class/mstar/mdisp/pq

It is valid after the DISP device is initialized.

The instruction is for Takoyaki, the PQ tool modules not mentioned can be used but write is invalid.