TWI780391B - Display system and method of automatically adjusting display-panel parameters - Google Patents

Abstract

A display system is provided. The display system includes a host configured to execute a panel-control application; and a display apparatus, electrically connected to the host. The display apparatus includes a display panel and a display controller. The panel-control application selects a configuration file including a plurality of display-panel parameters from a library of the host, and sends the display-panel parameters of the configuration file to the display controller via a specific control command, and the display controller drives the display panel according to the received display-panel parameters. The display panel determines whether the display panel is successfully lit up according to a status signal from the display panel. In response to the display panel not being lit up, the panel-control application selects another configuration file from the library and sends the display-panel parameters in the another configuration file to the display controller via the specific control command to drive the display panel until the display panel is successfully lit up.

Description

Display system and panel parameter automatic adjustment method

The present invention relates to a display device, in particular to a display system and a method for automatically adjusting panel parameters.

When a display device developer uses the same display controller to develop a display device with different display panels, the resolution and timing requirements of different panels are different, so whenever a different display panel is replaced, the developer needs to It takes a considerable amount of time to adjust the display settings of the display panel. The traditional method is that whenever the display parameters of the display panel are changed, it is necessary to recompile the newly modified driver through the host computer, and then let the display controller re-execute the new driver to confirm the result. However, when some display parameters (such as horizontal/vertical leading edge and trailing edge) are modified, it is still necessary to re-execute the new driver program to know whether the display panel can work normally. Therefore, developers need to spend a lot of time testing the display panels.

In view of this, a method for automatically adjusting display system and panel parameters is needed to solve the above problems.

The present invention provides a display system, including: a host, used to execute a panel control application program; and a display device, electrically connected to the host. The display device includes: a display panel; and a display controller. The panel control application program selects a configuration file including a plurality of panel parameters from a database of the host computer, and sends a specific control command to transmit the panel parameters in the configuration file to the display controller, and the display The controller drives the display panel according to the panel parameters. The display controller judges whether the display panel is successfully lit according to a state signal from the display panel. Since the display panel is not successfully lit, the panel control application program selects another configuration file from the database, and uses the specific control command to transmit the panel parameters in the other configuration file to the display control The controller drives the display panel according to the panel parameters until the display panel is successfully lit.

In some embodiments, the panel control application program writes a parameter control firmware of the display controller into a buffer memory of the display device, and the display controller controls the display based on the parameter control firmware A panel, wherein when the display panel is successfully turned on, the display controller controls the display panel to display one or more test images stored in the buffer memory.

In some embodiments, the display system further includes: a QR code decoder, electrically connected to the host, and used to capture the test image displayed on the display panel and perform image recognition, and send the image recognition result to The panel control application program of the host computer, wherein the panel control application program further transmits the image recognition result to the display controller to determine whether the display panel can normally display the test image.

In some other embodiments, when the display controller judges that the display panel cannot display the test image normally, the display controller sends a display status signal indicating a display error to the host, and the panel control application automatically Adjusting the panel parameters of a part of the display panel and sending the adjusted panel parameters to the display controller to drive the display panel to play the test image.

In some other embodiments, the QR code decoder aligns with the image played on the display panel (for example, a QR code image), and decodes the QR code in the QR code image (for example, performs image recognition) to determine the display Whether the panel can display the test image normally. When the display controller judges that the display panel cannot display the test image normally, the display controller sends a display status signal indicating a display error to the host, and the panel control application program automatically adjusts part of the display panel The panel parameters and the adjusted panel parameters are sent to the display controller to drive the display panel.

According to the above-mentioned embodiment, when the display controller judges that the display panel can normally display the test image, the panel control application saves and outputs the currently used panel parameters as a parameter setting file, and integrates the parameter settings files and related drivers to compile an executable file for the display controller.

The present invention further provides a panel parameter automatic adjustment method for a display system, the display system includes a host and a display device, and the display device includes a display controller and a display panel. The method includes the following steps: selecting a configuration file including a plurality of panel parameters from a database of the host computer, and sending a specific control command to transmit the panel parameters in the configuration file to the display controller; using the display The controller drives the display panel according to the panel parameters; the display controller is used to determine whether the display panel is successfully lit according to a status signal from the display panel; and in response to the display panel not being successfully lit, selecting another configuration file from the database, and using the specific control command to transmit the panel parameters in the other configuration file to the display controller to drive the display panel according to the panel parameters until the display panel is until successfully lit.

The following description is a preferred implementation of the invention, and its purpose is to describe the basic spirit of the invention, but not to limit the invention. For the actual content of the invention, reference must be made to the scope of the claims that follow.

It must be understood that words such as "comprising" and "including" used in this specification are used to indicate the existence of specific technical features, values, method steps, operations, components and/or components, but do not exclude possible Add more technical characteristics, values, method steps, operation processes, components, components, or any combination of the above.

Words such as "first", "second", and "third" used in the claims are used to modify the elements in the claims, and are not used to indicate that there is an order of priority, an antecedent relationship, or an element An element preceding another element, or a chronological order in performing method steps, is only used to distinguish elements with the same name.

FIG. 1A is a block diagram showing a display system according to an embodiment of the present invention. As shown in FIG. 1A , the display system 10 includes a host (host) 100 and a display device 200 . The host 100 is, for example, a personal computer or a server, and the display device 200 is, for example, a display device to be tested.

In one embodiment, the host 100 includes a processing unit 110 , a graphics processing unit (GPU) 120 , a memory unit 130 , a storage device 140 , a transmission interface 150 and at least one peripheral device 160 . The processing unit 110 , the graphics processing unit 120 , the memory unit 130 , the storage device 140 , the transmission interface 150 and the peripheral device 160 are electrically connected to each other through the system bus 111 .

The processing unit 110 can be implemented in various ways, such as a dedicated hardware circuit or a general-purpose hardware implementation (for example, a single processor, a multi-processor with parallel processing capabilities, or other processors with computing capabilities). A general-purpose processor (general-purpose processor) or a central processing unit (central processing unit, CPU), but the present invention is not limited thereto. The graphics processing unit 120 can be, for example, a graphics processing unit on a display card or a graphics processing unit integrated into the processing unit 110 .

The memory unit 130 is a volatile memory, such as dynamic random access memory (DRAM), but the invention is not limited thereto. The storage device 140 is a non-volatile memory, such as a hard disk drive, a solid-state disk, or a flash memory. , or a read-only memory (read-only memory), but the present invention is not limited thereto.

The storage device 140 can store a panel control application program 141 and an operating system 142 (such as Windows, Linux, MacOS, etc.), and the processing unit 110 reads the operating system 142 and a panel control application program 141 into the memory Unit 130 is executed. The graphics processing unit 120 can, for example, perform drawing processing of the application program executed by the processing unit 110 to generate an image signal including one or more images, and display the image signal on a display (not shown) of the host 100 .

The transmission interface 150 may include one or more data transmission interfaces, such as a Universal Serial Bus (USB) interface, a USB Type-C interface, a Thunderbolt (Thunderbolt) interface, a general-purpose input and output (General-purpose Input /Output, GPIO) interface, Universal Asynchronous Receiver/Transmitter (UART) interface, or a combination thereof, but the present invention is not limited thereto. The peripheral device 160 includes, for example, input devices such as a keyboard, a mouse, and a touch pad, but the present invention is not limited thereto.

The display device 200 includes a display controller 210 , a display panel 220 , a storage unit 230 , a buffer memory 240 , and a transmission interface 250 . The display controller 210, the display panel 220, the storage unit 230, the buffer memory 240 and the transmission interface 250 are arranged on a printed circuit board (PCB) 205 or a development board (development board), as shown in FIG. 1A shown. In some embodiments, the display device 200 can be regarded as a liquid-crystal display module (LCM), for example.

The display controller 210 can be, for example, a microcontroller (micro control unit, MCU), a microprocessor (micro processing unit, MPU), an application-specific integrated circuit (application-specific integrated circuit, ASIC), a chip system (System-on-chip, SoC) or a processor, but the present invention is not limited thereto.

The display panel 220 can be, for example, a liquid crystal panel with a backlight module (for example, realized by a light-emitting diode or a cold-cathode fluorescent tube), or an organic light-emitting diode (organic light-emitting diode). emitting diode) panel, etc., but the present invention is not limited thereto.

The storage unit 230 can be, for example, a non-volatile memory, such as read-only memory (ROM), erasable programmable read-only memory (EPROM), electronically erasable programmable read-only memory (EEPROM), etc. , but the present invention is not limited thereto. The storage unit 230 is used to store the firmware 231 related to the display device 200 , for example including codes of a boot program, parameters of display settings and backlight settings of the display panel 220 , and the like. The storage unit 230 can be external to the display controller 210 , or can be integrated into the display controller 210 , for example.

The buffer memory 240 can be, for example, a volatile memory (such as a dynamic random access memory), which is used to store output images to be played on the display panel 220 and required by the display controller 210 to control the display panel 220 Parameters for display setting and backlight setting. In some embodiments, the buffer memory 240 can be integrated into the display controller 210 , for example. For example, when the display device 200 is turned on, the display controller 210 can read the program code related to the boot procedure from the storage unit 230 to the first predetermined space 241 of the buffer memory 240, and configure the display panel according to the above code. 220 and the transmission interface 250 are initialized. The transmission interface 250 corresponds to the transmission interface 150 , and the host 100 and the display device 200 can be connected through the transmission interfaces 150 and 250 .

FIG. 1B is a block diagram showing a display system according to another embodiment of the present invention.

The display system 10 in Fig. 1B is similar to the display system 10 in Fig. 1A, the difference is that the host computer 100 of the display system 10 in Fig. 1B is electrically connected to a fast response 2 through one of the transmission interfaces 150 A QR code decoder 180 (Quick Response Code Decoder), which may be referred to as the QR code decoder 180 for short. The QR code decoder 180 includes an image capture unit 181 and a microcontroller 182, wherein the image capture unit 181 can be sensed by a charge-coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS), for example. It can be aligned with the display panel 220, and can capture the image played by the display panel 220, for example, the test image is a QR code image. The microcontroller 182 can receive the QR code image captured by the image capture unit 181 , and decode the QR code in the QR code image (for example, perform image recognition).

Figures 2A and 2B are schematic diagrams of the connection between the host computer and the display device of the display system according to an embodiment of the present invention. Figures 2C and 2D are schematic diagrams of the connection between the host computer and the display device of the display system according to another embodiment of the present invention.

As shown in FIG. 2A, the processing unit 110 of the host 100 can, for example, transmit specific control commands and data to the The display controller 210 of the display device 200 is used to control the display function and backlight function of the display panel 220, or to directly write image data, program codes and/or panel parameters into the buffer memory 240, details of which will be described later. Wherein, the transmission channel between the transmission interface 150A and the transmission interface 250A may be called a data transmission channel or a control signal transmission channel, for example.

In another embodiment, the transmission interface 150A (such as a USB interface) of the host 100 is connected to the corresponding transmission interface 250A (such as a USB interface) of the display device 200, and the transmission interface 150B (such as a UART interface) of the host 100 ) is connected to the corresponding transmission interface 250B (such as the corresponding UART interface) of the display device 200, and its purpose is to display the result of the program execution on the host computer 100, but the present invention is not limited thereto. Similarly, the processing unit 110 of the host 100 can transmit specific control commands to the display controller 210 of the display device 200 through the transmission interface 150A and the transmission interface 250A to control the display function of the display panel 220, and additionally transmit the specific control commands through the transmission interface 150B and the transmission interface 150B. The interface 250B sends another specific control command to the display controller 210 of the display device 200 to control the backlight function of the display panel 220 . That is to say, in the embodiment in FIG. 2B , the host 100 can control the display function and the backlight function of the display panel, and display the program execution results respectively through different transmission interfaces.

For ease of description, in the following embodiments, the host 100 and the display device 200 are connected through the transmission interfaces 150A and 250A, and the transmission interfaces 150A and 250A are both USB interfaces, as shown in FIG. 2A . After the display controller 210 initializes the transmission interface 250, the host 100 and the display device 200 can use the USB interface to communicate.

In this embodiment, the processing unit 110 of the host 100 can execute the panel control application program 141 . The panel control application program 141 can, for example, display a user interface on the display device (not shown) of the host 100, which is used to automatically set or allow the user to manually set various display parameters and backlight parameters of the display panel 220, wherein the display The parameters and the backlight parameters can be collectively referred to as panel parameters. The panel control application program 141 can also write the parameter control firmware of the display controller 210 into the second predetermined space 242 of the buffer memory 240 of the display device 200 through the USB interface. The display controller 210 can control the firmware based on the parameters to control the display panel 200 .

In this embodiment, the panel control application program 141 can not only control various panel parameters, but also control related settings of the display controller 210 and the buffer memory 240 . The above panel parameters include, for example: resolution of the display panel 220, pixel clock, frame buffer data type, clock polarity, and internal register settings ( internal register settings), horizontal timing, vertical timing, backlight control, reset control, data setup time, data hold time ) and so on, but the present invention is not limited thereto.

FIG. 3 is a schematic diagram of a user interface of a panel control application program according to an embodiment of the present invention.

In one embodiment, the user interface 300 of the panel control application 141 allows the user to manually set options for each panel parameter, and each option may include one or more sub-parameters. For example, the resolution control setting can include vertical display period (horizontal display period) and horizontal display period (horizontal display period), and horizontal timing can include horizontal back porch, horizontal front porch , horizontal pulse width (horizontal pulse width), vertical timing may include vertical back porch, vertical front porch, vertical pulse width. The setting of the clock polarity may include the horizontal/vertical synchronous signal, the data enable signal, and the polarity of the pixel clock, such as active high or active low. The SPI setting and the I ² C setting may respectively include related settings for the SPI and I ² C buses. The image buffer data types may include, for example, RGB555, RGB565, RGBx888, RGB888x, YCbYCr and similar combinations, but the invention is not limited thereto.

Examples include: clock frequency, vertical period, horizontal display period, horizontal trailing edge, horizontal leading edge, horizontal pulse width, vertical period, vertical display period, vertical trailing edge, vertical leading edge, vertical pulse width, data setting time, data time, but the present invention is not limited thereto, and the user interface can be designed according to actual needs. Wherein, when the display controller 210 controls the display panel 220 according to the above display parameters, at least the display parameters listed above must meet the timing requirements of the display panel 220 so that the display panel 220 can be correctly lit up (light up).

Specifically, after the display controller 210 has successfully executed the parameter control firmware, the panel control application program 141 can transmit specific control commands to the display controller 210 through the transmission interfaces 150A and 250A, thereby controlling the display function of the display panel 210 and backlight function. Wherein, the above-mentioned specific control command is, for example, a USB vendor command, and may include the above-mentioned various panel parameters. For example, if the developer wants to manually modify some panel parameters, the modified partial panel parameters can be provided in the user interface of the panel control application program 141 .

In addition, the panel control application program 141 can automatically adjust the panel parameters according to the feedback information provided by the display controller 210 , and add the adjusted panel parameters into specific control commands to send to the display controller 210 . Wherein, the above-mentioned feedback information may include a status signal of the display panel 220 (such as indicating whether it has been successfully lit), an error count value, etc., but the present invention is not limited thereto. After the display controller 210 decodes the specific control command, it can execute the related panel parameters in the specific control command, and then drive the display panel 220 according to the new related panel parameters.

Specifically, the database 143 of the host 100 stores a plurality of configuration files, and each configuration file corresponds to a set of panel parameters. Each set of panel parameters is, for example, a different display setting and/or backlight setting, and can be recorded in a corresponding setting file, such as a text file. When the display controller 210 detects that the status signal from the display panel 220 is not lit (such as a low logic state), the display controller 210 can report the status signal to the host 100 through the transmission interfaces 150A and 250A, and the panel The control application program 141 can automatically select and load a set of configuration files in the database 143, and add the entire set of panel parameters in the selected configuration file to specific control commands to be sent to the display controller 210, so that the display The controller 210 drives the display panel 220 according to the new panel parameters. The above process can be automatically repeated until the display panel 220 is successfully lit or all the configuration files in the database 143 have been tried.

If all the configuration files in the database 143 have been tried and failed to turn on the display panel 220, the developer can use the user interface of the panel control application 141 to manually set one or more panel parameters. Whenever any panel parameter in the user interface of the panel control application 141 is modified, the panel control application 141 can automatically add a new set of panel parameters to specific control commands and send them to the display controller 210 to drive the display panel 220. Optionally, the developer can adjust the panel parameters to be modified on the user interface of the panel control application program 141, and then manually press an "execute" button 310, so that the panel control application program 141 will convert the new entire group of panels The parameters are added to specific control commands and sent to the display controller 210 to drive the display panel 220 .

When the display panel 220 can be successfully turned on by the current display setting and backlight setting, the display controller 210 can control the display panel 220 to display and store in the buffer memory 240, for example, according to the state signal of the display panel 220 (for example, a high logic state). The test image in the third predetermined space 243 . For example, the processing unit 110 of the host 100 can pre-write one or more images to be tested into the third predetermined space 243 in the buffer memory 240 through a specific command, or after the display panel 220 can be successfully lit Then write one or more images to be tested into the third predetermined space 243 in the buffer memory 240 through specific instructions. The display controller 210 can control the display panel 220 to play one or more test images stored in the third predetermined space 243 of the buffer memory 240 according to the status signal of the display panel 220, wherein the above test images may include specific test patterns ( test pattern) or a test pattern generated by a random number generator (not shown).

For example, when the horizontal trailing edge and the horizontal leading edge in the horizontal timing, and the vertical trailing edge and the vertical trailing edge in the vertical timing are not correctly set, although the display panel 220 can be lighted, it cannot display correctly Test image. At this time, the display controller 210 can use a display status signal (for example, indicating a display error) to report the above situation to the host computer 100, and the panel control application program 141 can automatically adjust the horizontal trailing edge, horizontal leading edge and horizontal pulse of the horizontal timing Panel parameters such as width, vertical trailing edge of vertical timing, vertical leading edge, vertical pulse width, and driving voltage, etc., and the adjusted panel parameters are sent to the display controller 210 through specific control commands, and the display controller 210 The display panel 220 can then be re-controlled to play the test image stored in the third predetermined space 243 of the buffer memory 240 according to the adjusted panel parameters. In addition, the developer can also watch the test image played on the display panel 220 to repeatedly confirm whether the test image can be played normally.

When the number of bit errors in the replayed test image is less than a predetermined threshold, it means that the setting of the panel parameters currently used by the display panel 220 can operate normally, and the display controller 210 can use the display status signal (for example, indicating that the display is normal) to By reporting the above situation to the host 100, the panel control application 141 can save and export the panel parameters currently used by the display panel 220 as a corresponding configuration file. By integrating the above configuration files with other driver programs of the display controller 210 that do not need to be modified, an execution file that allows the display panel 220 to display correctly can be compiled.

Please refer to Figure 1B and Figures 2C-2D at the same time. The difference between FIGS. 2C-2D and FIGS. 2A-2B is that the host 100 in FIGS. 2C-2D can be electrically connected to the QR code decoder 180 through the transmission interface 150C. In another embodiment, the panel control application 141 executed by the processing unit 110 transmits a QR code image to the display device 200 through the transmission interfaces 150 and 250 , and plays the QR code image on the display panel 220 . At this time, the image capture unit 181 of the QR code decoder 180 can be aligned with the image played on the display panel 220 (such as a QR code image), and the panel control application 141 can send a control signal to the QR code decoding through the transmission interface 150C. The controller 180 notifies the QR code decoder 180 to start the decoding process of the QR code, and returns the data result obtained by decoding the QR code decoder 180 (such as image recognition result or test result) to the panel through the transmission interface 150C Control application 141 . Therefore, the panel control application 141 can display the test results on a screen (such as the display panel 220 ) or play them through a speaker (not shown), and can transmit the test results to the display controller 210 through the transmission interfaces 150B and 250B. The display controller 210 can judge whether the display panel 200 can display images normally according to the test result.

For example, when the horizontal trailing edge and the horizontal leading edge in the horizontal timing of the display panel 220, and the vertical trailing edge and the vertical trailing edge in the vertical timing are not correctly set, although the display panel 220 can be turned on, it does not The test image cannot be displayed correctly. At this time, the QR code decoder 180 can report the image recognition result of the image played by the display panel 220 to the host 100, and the panel control application 141 can automatically adjust the horizontal trailing edge, horizontal leading edge, and horizontal pulse width of the horizontal timing , panel parameters such as vertical trailing edge, vertical leading edge, vertical pulse width, and driving voltage of the vertical timing, and transmit the adjusted panel parameters to the display controller 210 through specific control commands. The display controller 210 can re-control the display panel 220 to play the test image stored in the third predetermined space 243 of the buffer memory 240 according to the adjusted panel parameters. In addition, the developer can also watch the test image played on the display panel 220 to repeatedly confirm whether the test image can be played normally.

When the replayed test QR code image is successfully identified by the QR code decoder 180 and the identification result is reported to the host 100, it means that the panel parameter settings currently used by the display panel 220 can operate normally. When viewing the test image played on the display panel 220 and confirming that the test image is played normally, it means that the setting of the panel parameters currently used by the display panel 220 can operate normally, so the panel control application program 141 can set the panel parameters currently used by the display panel 220 Save and export (save and export) as a corresponding configuration file. By integrating the above configuration files with other driver programs of the display controller 210 that do not need to be modified, an execution file that allows the display panel 220 to display correctly can be compiled.

In some embodiments, the display device 200 may include a non-volatile memory, such as an SD card or a NAND flash memory, for storing configuration files generated by the panel control application 141 to allow the display panel 220 to correctly display images. . If the display panel 220 on the display device 200 is replaced but the display controller 210 is not replaced, the above process can be used to generate a setting file that allows the new display panel 220 to display correctly, but it is not necessary to change the parameters of the control firmware and the display panel. the driver. Therefore, through the above process, the product development time of the display device can be greatly shortened.

FIG. 4A is a flowchart of a method for automatically adjusting panel parameters according to an embodiment of the present invention. Please refer to Figure 1A and Figure 4A at the same time.

In step S410, the host 100 and the display device 200 are connected. For example, the host 100 and the display device 200 can be connected through the transmission interfaces 150 and 250, and the transmission interfaces 150 and 250 are, for example, USB interfaces.

In step S420, the transmission interface 250 of the display device 200 is initialized. For example, after the display controller 210 executes the code of the boot program to initialize the transmission interface 250 , the host 100 and the display device 200 can use the USB interface to communicate.

In step S430 , the host 100 writes the parameter control firmware of the display controller 210 into the second predetermined space 242 of the buffer memory 240 of the display device 200 through the transmission interface 250 . Therefore, the display controller 210 can control the firmware to operate based on the parameters.

In step S435 , the host 100 selects a configuration file from the database 143 and sends a specific control command to transmit the panel parameters in the configuration file to the display controller 210 . The above panel parameters include, for example: resolution of the display panel 220, pixel clock, image buffer data type, clock polarity, internal register setting, horizontal timing, vertical timing, backlight control, reset control, data setting time, Data retention time, etc., but the present invention is not limited thereto.

In step S440 , the display controller 210 executes the panel parameters in the specific control command to drive the display panel 220 .

In step S450, the display controller 210 determines whether the display panel 220 is successfully turned on. For example, the display controller 210 can determine whether the display panel 220 is successfully turned on according to a status signal from the display panel 220 . If the display panel 220 is successfully lit, step S460 is performed; if the display panel 220 is not successfully lit, then return to step S435, and the panel control application program 141 will select another profile.

In step S460 , the display controller 210 controls the display panel 220 to display the test image stored in the buffer memory 240 .

In step S470, the display controller 210 determines whether the display panel 200 can normally display images. If the display panel 200 can display images normally, then execute step S490; if the display panel 200 cannot display images normally, execute step S480.

For example, each column driver and each row driver of the display panel 220 may include a detection circuit to detect whether an error occurs in the played test image or the display controller 210 may determine whether an error occurs in the played test image, for example Bit error occurs in the pixels of the displayed test image or the eye diagram (eye diagram) is squeezed, and the display controller 210 can calculate the bit detected by the detection circuit of each column driver and each row driver, for example. According to the number of errors, it is determined whether the display panel 200 can display images normally, and the display controller 210 can report a display status signal (eg, display error or normal display) to the host 100 .

In step S480 , the host 100 automatically adjusts some panel parameters of the display panel 200 and transmits the adjusted panel parameters to the display controller 210 to drive the display panel 220 . For example, some of the above-mentioned panel parameters may include: panel parameters such as the horizontal trailing edge, the horizontal leading edge, and the horizontal pulse width of the horizontal timing, the vertical trailing edge, the vertical leading edge, and the vertical pulse width of the vertical timing, and the driving voltage, etc. But the present invention is not limited thereto. It should be noted that after the step S480, the process returns to the step S460 to control the display panel 220 to display the test image stored in the buffer memory 240 .

In step S490, the host 100 stores and outputs the currently used panel parameters as a parameter setting file (such as a text file), and integrates the parameter setting file and related driver programs to compile an executable file. For example, the above setting The final file is integrated with other driver programs of the display controller 210 that do not need to be modified to compile an execution file that allows the display panel 220 to display correctly.

4B-1 and 4B-2 are flowcharts of a method for automatically adjusting panel parameters according to an embodiment of the present invention. Please also refer to Figure 1B and Figures 4B-1 and 4B-2.

The flow charts in Figures 4B-1 and 4B-2 are similar to those in Figure 4A, where the difference between Figure 4A and Figures 4B-1 and 4B-2 lies in the steps in Figures 4B-1 and 4B-2 After S460, step S465 is executed, and when it is determined in step S470 that the image cannot be displayed normally, step S480 is executed.

In step S465 , use the QR code decoder 180 to capture the image played by the display panel 220 for image recognition, and send the image recognition result to the host 100 . For example, the panel control application 141 can transmit a test image (such as a QR code image) to the display panel 220 of the display device 200 through the transmission interfaces 150A and 250A, and the display panel 220 plays the test image. The QR code decoder 180 can capture a test image played by the display panel 220 and perform image recognition, and send the obtained image recognition result to the panel control application 141 executed by the host 100 . Therefore, the panel control application 141 can display the test results on a screen (such as the display panel 220 ) or play them through a speaker (not shown), and can transmit the test results to the display controller 210 through the transmission interfaces 150B and 250B. In step S470, the display controller 210 or the user can determine whether the display panel 200 can display images normally according to the test result.

To sum up, the present invention provides an automatic adjustment method for display device and panel parameters, which allows the host and display device in the display system to automatically adjust the panel parameters and backlight parameters for the display panel to correctly display images. If the display panel of the display device is replaced, the panel parameters and backlight parameters of the image can be displayed correctly. If the display panel on the display device is replaced but the display controller 210 is not replaced, the process of the above-mentioned embodiment can be used to generate a configuration file that allows the new display panel to display correctly, but there is no need to change the parameters of the control firmware and the display panel. the driver. Therefore, the present invention can greatly shorten the product development time of the display device.

Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the scope of the present invention. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

10: Display system 100: Host 110: processing unit 111: System bus 120: Graphics processing unit 130: memory unit 140: storage device 141:Panel control application 142: Operating system 143: Database 150: transmission interface 160:Peripheral device 180:QR code decoder 181: Image capture unit 182: Microcontroller 200: display device 205: Printed circuit board 210: display controller 220: display panel 230: storage unit 231:Firmware 240: buffer memory 241: The first reserved space 242: The second predetermined space 243: The third reservation space 250: transmission interface 150A, 150B, 250A, 250B, 150C: transmission interface 300: user interface 310: button S410-S490: Steps

FIG. 1A is a block diagram showing a display system according to an embodiment of the present invention. FIG. 1B is a block diagram showing a display system according to another embodiment of the present invention. Figures 2A and 2B are schematic diagrams of the connection between the host computer and the display device of the display system according to an embodiment of the present invention. Figures 2C and 2D are schematic diagrams of the connection between the host computer and the display device of the display system according to another embodiment of the present invention. FIG. 3 is a schematic diagram of a user interface of a panel control application program according to an embodiment of the present invention. FIG. 4A is a flowchart of a method for automatically adjusting panel parameters according to an embodiment of the present invention. 4B-1 and 4B-2 are flowcharts of a method for automatically adjusting panel parameters according to an embodiment of the present invention.

10: Display system

200: display device

100: Host

205: Printed circuit board

110: processing unit

210: display controller

111: System bus

220: display panel

120: Graphics processing unit

230: storage unit

130: memory unit

231:Firmware

140: storage device

240: buffer memory

141:Panel control application

241: The first reserved space

142: Operating system

242: The second predetermined space

143: Database

243: The third reservation space

150: transmission interface

250: transmission interface

160:Peripheral device

Claims (4)

A display system, comprising: a host, used to execute a panel control application; a display device, electrically connected to the host, and the display device includes: a display panel; and a display controller; a QR code decoder , electrically connected to the host; wherein, the panel control application selects a configuration file including a plurality of panel parameters from a database of the host, and sends a specific control command to the panel parameters in the configuration file sent to the display controller, and the display controller drives the display panel according to the panel parameters; wherein, the display controller judges whether the display panel is successfully lit according to a status signal from the display panel ; Since the display panel is not successfully lit, the panel control application selects another configuration file from the database, and uses the specific control command to send the panel parameters in the other configuration file to the display The controller drives the display panel according to the panel parameters until the display panel is successfully lit; wherein the panel control application program writes a parameter control firmware of the display controller into a buffer memory of the display device body, and the display controller controls the firmware based on the parameter to control the display panel, wherein when the display panel is successfully lit, the display controller controls the display panel to display one or more images stored in the buffer memory A plurality of test images; wherein the QR code decoder captures the test image displayed on the display panel and Carry out image recognition, and send the image recognition result to the panel control application of the host; wherein the panel control application further sends the image recognition result to the display controller to determine whether the display panel can normally display the test image ; wherein when the display panel fails to display the test image normally, the display controller transmits a display status signal indicating a display error to the host, and the panel control application program automatically adjusts the panels that are part of the display panel parameter and send the adjusted panel parameters to the display controller to drive the display panel to play the test image. The display system as described in Item 1 of the scope of the patent application, wherein the display panel includes one or more column drivers and one or more row drivers, and each column driver and each row driver includes a detection circuit for detecting The number of bit errors in the test image played by the display panel, and the display controller judges whether the display panel can normally display the test image based on the number of bit errors; when the display controller judges the display panel If the test image cannot be displayed normally, the display controller sends a display status signal indicating a display error to the host, and the panel control application program automatically adjusts the panel parameters of a part of the display panel and sends the adjusted The panel parameters are sent to the display controller to drive the display panel. The display system described in item 1 of the scope of the patent application, wherein when the display controller judges that the display panel can normally display the test image, the panel control application program stores and outputs the currently used parameters of the panels as a a parameter setting file, and integrate the parameter setting file and related driver programs to compile an executable file of the display controller. A method for automatically adjusting panel parameters is used in a display system, the display system includes a host, a display device and a QR code decoder, and the display device includes a display controller and a display panel, the method includes: from the A database of the host computer selects a configuration file including a plurality of panel parameters, and sends a specific control command to transmit the panel parameters in the configuration file to the display controller; driving the display panel; using the display controller to determine whether the display panel is successfully lit according to a status signal from the display panel; in response to the display panel not being successfully lit, selecting another configuration file from the database , and use the specific control command to transmit the panel parameters in the other configuration file to the display controller to drive the display panel according to the panel parameters until the display panel is successfully lit, wherein the host system Write a parameter control firmware of the display controller into a buffer memory of the display device, and the display controller is based on the parameter control firmware to control the display panel; in response to the display panel being successfully lit, Use the display controller to control the display panel to display one or more test images stored in the buffer memory; use the QR code decoder to capture the test image displayed on the display panel and perform image recognition, and image The recognition result is sent to the panel control application program of the host computer; the image recognition result is sent to the display controller to judge whether the display panel can normally display the test image; when the display panel cannot normally display the test image, use the display controller system sending a display status signal indicating a display error to the host; and using the host to automatically adjust the panel parameters of a part of the display panel and sending the adjusted panel parameters to the display controller to drive the display panel to Play the test video.

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