Computer motherboard

Abstract

The utility model provides a computer mainboard, include: processor, with BIOS ROM, EC and display card of electric connection of processor respectively, with display conversion chip of electric connection of EC and display card respectively, and with display screen interface of electric connection of display conversion chip, BIOS ROM is installed in BIOS firmware, display conversion chip is installed in display conversion chip firmware, BIOS ROM passes through the processor with EC communication, EC passes through a plurality of GPIO signals with display conversion chip communication, display conversion chip passes through display screen interface and connects display screen, display conversion chip configures display screen according to a plurality of GPIO signals to make display screen can realize normal display, and transmission display signal from display card to display screen.

Description

Technical Field

[0001] This utility model relates to the field of computer technology, and in particular to a computer motherboard. Background Technology

[0002] In this era of diversified information technology, computer equipment is widely used in industrial control, enterprise office, user interaction, entertainment, and other applications. With the continuous development of independent and controllable information technology and the continuous improvement of the performance of domestically produced processors, computer equipment in various fields such as industrial control computers, servers, and personal computers are gradually becoming domestically produced.

[0003] With the continuous expansion of application areas, the demand for EDP and LVDS screens in domestically produced computer equipment is gradually increasing. The screens that computer equipment needs to adapt to may vary depending on the application scenario. In some application scenarios, such as when used as an industrial control computer, it is often required that the same computer equipment be compatible with different display screens, and different customers typically require compatibility with multiple different display screens. Because different types and specifications of display screens have significant differences in hardware specifications (such as power supply and drive parameter configuration, display timing, pixels, and resolution), different firmware is required to achieve normal display.

[0004] Firmware is dedicated program code embedded in a system, responsible for core functions such as display control logic execution, hardware parameter adaptation, and signal interaction management. Firmware needs to be stored stably for a long time and its data must not be lost after power failure; therefore, it is usually pre-programmed into non-volatile memory (such as ROM). Generally, computer motherboards / computer devices need to have necessary firmware programmed before leaving the factory, such as BIOS firmware (usually installed in the BIOS ROM) and graphics card firmware. Therefore, to meet the different display needs of different customers, factories need to develop and program different firmware for products supplied to different customers. This results in a huge waste of manpower on both the R&D and production sides and increases the difficulty of firmware management in the factory. Furthermore, if customers need to replace their displays with different types / specifications after leaving the factory, requiring different firmware support, the firmware needs to be reprogrammed. This requires the computer motherboard / computer device manufacturer to assist in providing new firmware or even firmware flashing services, causing inconvenience to customers and increasing the service costs for manufacturers. Summary of the Invention

[0005] The purpose of this utility model is to provide a computer motherboard that supports online switching between different display screens, reducing the difficulty of adapting the computer motherboard to new display screens and meeting the diverse display needs of different customers.

[0006] To achieve the above objectives, this utility model provides a computer motherboard, comprising: a processor, a BIOS ROM, an EC (Electronic Control Panel), and a graphics card electrically connected to the processor, a display conversion chip electrically connected to the EC and the graphics card, and a display screen interface electrically connected to the display conversion chip; the BIOS ROM contains BIOS firmware, and the display conversion chip contains display conversion chip firmware; the BIOS ROM communicates with the EC through the processor, the EC communicates with the display conversion chip through several GPIO signals, and the display conversion chip is connected to a display screen through the display screen interface; the display conversion chip configures the display screen according to the several GPIO signals to enable the display screen to display normally, and transmits display signals from the graphics card to the display screen.

[0007] The processor is a Phytium D2000 processor.

[0008] The display conversion chip is model CH7513.

[0009] The EC model is IT5571.

[0010] The graphics card in question is the FengHua 2 graphics card.

[0011] The display screen interface is an EDP display screen interface and / or an LVDS display screen interface.

[0012] The number of GPIO signals is 5 GPIO signals.

[0013] The computer motherboard also includes a VGA interface and an HDMI interface that are electrically connected to the graphics card.

[0014] The computer motherboard also includes a USB 3.0 interface, a USB 2.0 interface, a Type-C interface, a SATA interface, an SSD interface, and a Micro SIM Card interface, all electrically connected to the processor.

[0015] The computer motherboard also includes a TCM interface electrically connected to the processor.

[0016] The beneficial effects of this utility model are as follows: The computer motherboard of this utility model supports online switching of different display screens, which reduces the difficulty of adapting the computer motherboard to the new display screen, can meet the diverse display needs of different customers, eliminates the need to develop and burn different firmware for each customer, reduces the difficulty of firmware management in the factory, reduces the workload of the R&D and production ends, and can also reduce the manpower configuration for providing related technical support services to customers in the future. Attached Figure Description

[0017] To further understand the features and technical content of this utility model, please refer to the following detailed description and accompanying drawings. However, the drawings are provided for reference and illustration only and are not intended to limit the scope of this utility model. In the drawings,

[0018] Figure 1 This is a block diagram of the display circuit structure of the computer motherboard of this utility model.

[0019] Figure 2 This is a system block diagram of a preferred embodiment of the computer motherboard of this utility model. Detailed Implementation

[0020] To further illustrate the technical means and effects of this utility model, the following detailed description is provided in conjunction with the preferred embodiments of this utility model and their accompanying drawings.

[0021] See Figure 1-2 This utility model provides a computer motherboard, comprising: a processor 1, a BIOS ROM 2, an EC 3, and a graphics card 4 electrically connected to the processor 1, a display conversion chip 5 electrically connected to the EC 3 and the graphics card 4, and a display screen interface 6 electrically connected to the display conversion chip 5; the BIOS ROM 2 contains BIOS firmware, and the display conversion chip 5 contains display conversion chip firmware; the BIOS ROM 2 communicates with the EC 3 through the processor 1, the EC 3 communicates with the display conversion chip 5 through several GPIO signals, and the display conversion chip 5 is connected to a display screen through the display screen interface 6; the display conversion chip 5 configures the display screen according to the several GPIO signals to enable the display screen to display normally, and transmits display signals from the graphics card 4 to the display screen.

[0022] This invention relates to a computer motherboard that supports pre-writing display screen configuration information into the firmware of the display conversion chip 5 and providing corresponding display screen options in the BIOS firmware of the BIOS ROM 2. When switching display screens is required, the computer enters the BIOS interface, selects the display screen, saves the selection, exits the BIOS interface, and waits for the computer system to restart. The new display screen will then function normally, which is convenient and quick. Specifically, after selecting and saving the display screen in the BIOS interface, the BIOS sends a command to EC 3. EC 3 configures several GPIO signals that communicate with the display conversion chip 5 according to the BIOS command. After exiting the BIOS interface, the BIOS automatically restarts the computer system. During the computer system restart process, EC 3 sends a reset signal to notify the display conversion chip 5 to reset. After the reset is complete, the display conversion chip 5 reads the several GPIO signals that communicate with EC 3 and configures the display screen accordingly, enabling the display screen to display normally. All of these operations are performed automatically by the computer system. The computer motherboard of this invention supports online switching between different display screens, reducing the difficulty of adapting the computer motherboard to new display screens and meeting the diverse display needs of different customers. It eliminates the need to develop and burn different firmware for each customer, reducing the difficulty of firmware management in the factory, reducing the workload of the R&D and production ends, and also reducing the manpower required for subsequent technical support services for customers.

[0023] Preferably, the processor 1 is a Phytium D2000 processor.

[0024] Preferably, the display conversion chip 5 is model CH7513, which supports the conversion of EDP display signals to LVDS display signals.

[0025] Preferably, the EC 3 is model IT5571.

[0026] Preferably, the graphics card 4 is the Feng Hua No. 2 graphics card.

[0027] Specifically, the display screen interface 6 is an EDP display screen interface and / or an LVDS display screen interface.

[0028] Preferably, in a preferred embodiment of this invention, the plurality of GPIO signals are five GPIO signals. The combination of these five GPIO signals enables the EC3 to send dozens of different control signals to the display conversion chip 5. The display conversion chip 5 configures different display screens according to these different control signals, thereby supporting the switching of dozens of different display screens and covering the display needs of the vast majority of customers. For example, by setting one GPIO signal to identify the EDP display screen option, and the other four GPIO signals having 16 combinations corresponding to 16 different LVDS display screen options, the selection of both the EDP display screen and 16 different LVDS display screen specifications can be supported, which is sufficient to meet the display needs of the vast majority of customers.

[0029] Preferably, see Figure 2 In one specific embodiment of this utility model, the computer motherboard further includes a VGA interface and an HDMI interface electrically connected to the graphics card 4, which can support the connection of VDA display devices and HDMI display devices to meet users' richer and more diverse display needs.

[0030] In addition to the aforementioned display-related modules, the computer motherboard of this utility model also includes conventional computer motherboard modules such as memory or memory interface, non-volatile memory (such as flash memory), USB interface, SSD interface, audio chip, network interface, and RTC chip.

[0031] For example, in Figure 2 In one specific embodiment of the present invention shown, the computer motherboard further includes a USB 3.0 interface, a USB 2.0 interface, a Type C interface, a SATA interface, an SSD interface, and a Micro SIMCard interface electrically connected to the processor 1, which can meet the diverse interface needs of users.

[0032] In this embodiment, the computer motherboard includes a memory interface to support the insertion of memory modules, and the memory interface is a DDR4 SODIMM interface. The non-volatile memory is an EEPROM (Electrically Erasable Programmable Read-Only Memory). The network interface is an RJ45 interface. The audio chip is model SN6140.

[0033] The computer motherboard also includes a TCM interface electrically connected to the processor 1, which can support external TPM (Trusted Platform Module) devices.

[0034] In summary, the computer motherboard of this utility model supports online switching between different display screens, reducing the difficulty of adapting the computer motherboard to new display screens, meeting the diverse display needs of different customers, eliminating the need to develop and burn different firmware for each customer, reducing the difficulty of firmware management in the factory, reducing the workload of the R&D and production ends, and also reducing the manpower required for subsequent technical support services for customers.

[0035] As described above, those skilled in the art can make various other corresponding changes and modifications based on the technical solution and concept of this utility model, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A computer motherboard, characterized in that, include: The processor (1) is electrically connected to the BIOS ROM (2), EC (3), and graphics card (4), respectively; the display conversion chip (5) is electrically connected to the EC (3) and graphics card (4), respectively; and the display screen interface (6) is electrically connected to the display conversion chip (5). The BIOS ROM (2) contains BIOS firmware, and the display conversion chip (5) contains display conversion chip firmware. The BIOS ROM (2) communicates with the EC (3) through the processor (1), and the EC (3) communicates with the display conversion chip (5) through several GPIO signals. The display conversion chip (5) is connected to the display screen through the display screen interface (6). The display conversion chip (5) configures the display screen according to several GPIO signals so that the display screen can display normally and transmits the display signal from the graphics card (4) to the display screen. The display conversion chip (5) has display screen configuration information pre-written in its firmware. The BIOS ROM (2) has corresponding display screen options set in its firmware. The EC (3) configures several GPIO signals that communicate with the display conversion chip (5) according to the instructions of the BIOS.

2. The computer motherboard as described in claim 1, characterized in that, The processor (1) is a Phytium D2000 processor.

3. The computer motherboard as described in claim 1, characterized in that, The display conversion chip (5) is model CH7513.

4. The computer motherboard as described in claim 1, characterized in that, The model of the EC(3) is IT5571.

5. The computer motherboard as described in claim 1, characterized in that, The graphics card (4) is the Feng Hua No. 2 graphics card.

6. The computer motherboard as described in claim 1, characterized in that, The display screen interface (6) is an EDP display screen interface and / or an LVDS display screen interface.

7. The computer motherboard as described in claim 1, characterized in that, The number of GPIO signals is 5 GPIO signals.

8. The computer motherboard as described in claim 1, characterized in that, The computer motherboard also includes a VGA interface and an HDMI interface that are electrically connected to the graphics card (4).

9. The computer motherboard as described in claim 1, characterized in that, The computer motherboard also includes a USB 3.0 interface, a USB 2.0 interface, a Type C interface, a SATA interface, an SSD interface, and a Micro SIMCard interface that are electrically connected to the processor (1).

10. The computer motherboard as described in claim 1, characterized in that, The computer motherboard also includes a TCM interface electrically connected to the processor (1).

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