A VGA board for a touch display, a touch display, and a computer

Abstract

This invention relates to the field of computer technology, and more particularly to a VGA board for a touch display, a touch display, and a computer. The VGA board includes: a first USB hub chip, whose input is connected to a USB signal output from the computer host; the output of the first USB hub chip is split into two paths, one connected to the backlight panel of the touch display, and the other connected to the touch driver board of the touch display; and a second USB hub chip, whose input is connected to the USB signal output from the computer host; the output of the second USB hub chip is also split into two paths, one USB output signal connected to the backlight panel of the touch display, and the other USB output signal connected to the touch driver board of the touch display. This invention implements a redundant USB hub design, significantly reducing the display failure rate and improving reliability.

Description

Technical Field

[0001] This invention relates to the field of computer technology, and more particularly to a VGA board for a touch display, a touch display, and a computer. Background Technology

[0002] Touchscreen monitors (TB, also known as touch displays) allow users to operate the computer by simply touching icons or text on the screen with their fingers, eliminating the need for a keyboard and mouse and making human-computer interaction more direct. Touch control and dimming are two important functions of touchscreen monitors and are also important indicators of monitor performance.

[0003] Currently, touch and dimming functions in touch monitors are implemented via a USB (Universal Serial Bus) link. The USB signal from the computer host connects to the monitor's VGA (Video Graphics Array) board through the monitor's USB port, then enters the USB hub chip on the board. This chip expands a single USB port into multiple outputs. One output connects directly to the touch driver board for touch functionality, while the other connects to the MCU (Microcontroller Unit). The MCU communicates with the backlight board via I2C (Inter-Integrated Circuit) signals, and the backlight board handles the dimming function. Therefore, the USB hub is the upstream circuit for both touch and dimming. A failure in the USB hub will cause both touch and dimming to malfunction, severely impacting monitor functionality. In practical applications, touch and dimming failures are common problems, and the solution often involves replacing the entire VGA board, which is both time-consuming and labor-intensive. Summary of the Invention

[0004] In view of this, in order to address the technical problems of touch or dimming failure in touch displays, the present invention provides a VGA board for touch displays, a touch display, and a computer.

[0005] According to a first aspect of the present invention, a VGA board for a touch display is provided, the VGA board for the touch display comprising:

[0006] The first USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one path is connected to the backlight panel of the touch display, and the other path is connected to the touch driver board of the touch display.

[0007] The second USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one USB output signal is connected to the backlight panel of the touch display, and the other USB output signal is connected to the touch driver board of the touch display.

[0008] In some embodiments, the VGA board for the touch display further includes an MCU chip;

[0009] The USB output signal from the first USB HUB chip to the backlight and the USB output signal from the second USB HUB chip to the backlight are combined and input to the MCU chip. The MCU chip then outputs an I2C signal to the backlight.

[0010] In some embodiments, the touch display further includes an OSD chip and an I2C isolation chip;

[0011] The MCU chip also outputs another I2C signal to the I2C isolation chip, and the I2C isolation chip outputs a signal to the OSD chip.

[0012] In some embodiments, the touch display includes a USB isolation chip disposed between the touch driver board and the VGA board;

[0013] One USB output signal from the first USB HUB chip to the touch driver board and one USB output signal from the second USB HUB chip to the touch driver board are combined and input to the USB isolation chip, and the USB isolation chip outputs a signal to the touch driver board.

[0014] In some embodiments, the display control computer host includes a processor and an I / O expansion chip;

[0015] The processor is configured to:

[0016] Receives the inductive dimming signal via the NET bus; and

[0017] The sensor-induced dimming signal is processed and then converted into a USB signal output through the IO expansion chip.

[0018] In some embodiments, the processor is further configured to:

[0019] Receives the dimming signal from the rotary knob via the CAN bus; and

[0020] The dial dimming signal is processed and then converted into a USB signal output through the IO expansion chip.

[0021] In some embodiments, the processor is model FT2000 / 4.

[0022] In some embodiments, the IO expansion chip is model ZX-200.

[0023] According to a second aspect of the present invention, a touch display is provided, the touch display including the VGA board for the touch display described above.

[0024] According to a third aspect of the present invention, a computer is provided, the computer including the touch display described above.

[0025] The aforementioned VGA board for touch displays offers the following beneficial technical advantages: It improves upon existing VGA boards by adding a second USB hub chip to the existing single USB hub chip. The USB signal from the computer host enters the display's USB connector and simultaneously enters two identical USB hub chips. These two chips operate in parallel with identical circuitry, and their output USB signals share the same path to the next stage circuit. This ensures that even if one USB hub fails and the output USB signal disappears, the other USB hub can still provide an output signal, guaranteeing the normal operation of the touch display. This redundant USB hub design significantly reduces the display's failure rate and improves its operational reliability.

[0026] In addition, the present invention also provides a touch display and a computer, which can achieve the above-mentioned technical effects, and will not be described in detail here. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of a VGA board for a touch display, provided as an embodiment of the present invention.

[0029] [Explanation of Labels in the Attached Image]

[0030] 100: VGA board;

[0031] 110: First USB hub chip; 120: Second USB hub chip; 130: MCU chip;

[0032] 200: Display and control computer host;

[0033] 210: Processor; 220: I / O expansion chip; 230: Sensor dimming; 240: Knob dimming;

[0034] 300: Touchscreen display;

[0035] 310: Backlight board; 320: Touch driver board; 330: OSD chip; 340: I2C isolation chip; 350: USB isolation chip. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to specific examples and the accompanying drawings.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In some embodiments, please refer to Figure 1 As shown, the present invention provides a VGA board for a touch display, wherein the VGA board 100 for the touch display specifically includes the following structure:

[0040] The first USB hub chip 110 has its input connected to the USB signal output by the display control computer host 200. The output of the first USB hub chip 110 is divided into two paths: one path is connected to the backlight panel 310 of the touch display 300, and the other path is connected to the touch driver board 320 of the touch display 300. The backlight panel 310 is responsible for dimming the touch display, and the touch driver board 320 is responsible for touch control of the touch display.

[0041] The second USB HUB chip 120 has its input connected to the USB signal output by the display control computer host 200. The output of the second USB HUB chip 120 is divided into two paths: one USB output signal is connected to the backlight panel 310 of the touch display 300, and the other USB output signal is connected to the touch driver board 320 of the touch display 300.

[0042] The aforementioned VGA board for touch displays offers the following beneficial technical advantages: It improves upon existing VGA boards by adding a second USB hub chip to the existing single USB hub chip. The USB signal from the computer host enters the display's USB connector and simultaneously enters two identical USB hub chips. These two chips operate in parallel with identical circuitry, and their output USB signals share the same path to the next stage circuit. This ensures that even if one USB hub fails and the output USB signal disappears, the other USB hub can still provide an output signal, guaranteeing the normal operation of the touch display. This redundant USB hub design significantly reduces the display's failure rate and improves its operational reliability.

[0043] In some embodiments, the VGA board for the touch display further includes an MCU chip 130;

[0044] The USB output signal from the first USB HUB chip 110 to the backlight board 310 and the USB output signal from the second USB HUB chip 120 to the backlight board 310 are combined and then input to the MCU chip 130. The MCU chip 130 outputs an I2C signal to the backlight board 310.

[0045] In some embodiments, the touch display 300 further includes an OSD chip 330 and an I2C isolation chip 340;

[0046] OSD stands for On-Screen Display, referring to a menu-driven adjustment method on the screen. The core of OSD is using a character generator chip to display the desired characters on the monitor screen. Commonly used OSD chips include MAX7456, OSD7556, OSD7516, UPD6465, and MB90092. The working principle of an OSD chip is to synchronously add or change the colors of certain pixels in the image in real time, combining them into data that humans can recognize in the image. Dynamic effects can be achieved by changing a specific OSD control register in a fixed or variable manner. For example, to generate OSD characters that move from left to right on the screen, simply fill the OSD control register controlling the left and right positions with values ​​that increase sequentially or decrease sequentially; the OSD output characters will naturally move left and right according to the changed values.

[0047] The MCU chip 130 also outputs another I2C signal to the I2C isolation chip 340, and the I2C isolation chip 340 outputs a signal to the OSD chip 330.

[0048] In some embodiments, the touch display 300 includes a USB isolation chip 350 disposed between the touch driver board 320 and the VGA board;

[0049] The USB output signal from the first USB HUB chip 110 to the touch driver board 320 and the USB output signal from the second USB HUB chip 120 to the touch driver board 320 are combined and input to the USB isolation chip 350. The USB isolation chip 350 outputs a signal to the touch driver board 320.

[0050] In some embodiments, the display control computer host 200 includes a processor 210 and an I / O expansion chip 220;

[0051] The processor 210 is configured to:

[0052] Receives the inductive dimming signal from the inductive dimming 230 via the NET bus; and

[0053] After processing, the dimming signal 230 is converted into a USB signal output through the IO expansion chip 220.

[0054] In some embodiments, the processor 210 is further configured to:

[0055] Receives the knob dimming signal from the knob dimming 240 via the CAN bus; and

[0056] The signal from the knob dimming 240 is processed and then converted into a USB signal output through the IO expansion chip 220.

[0057] In some embodiments, the processor 210 is model FT2000 / 4.

[0058] In this implementation, the FT-2000 / 4 chip integrates four Phytium-developed next-generation high-performance processor cores, FTC663. It employs an out-of-order four-issue superscalar pipeline, is compatible with the 64-bit ARMV8 instruction set, and supports both ARM64 and ARM32 execution modes. It supports single-precision and double-precision floating-point instructions and ASIMD processing instructions, and supports hardware virtualization. The FT-2000 / 4 enhances chip security at the hardware level, supporting Phytium's self-defined processor security architecture standard PSPA 1.0, meeting the performance and security requirements of more complex application scenarios. This product is suitable for building desktop terminals, portable terminals, lightweight servers, and embedded low-power products with higher performance, energy efficiency, and security needs, and supports both commercial and industrial applications.

[0059] In some embodiments, the IO expansion chip 220 is model ZX-200.

[0060] In this embodiment, the ZX-200 IO expansion chip is a new generation of high-performance IO expansion chip product independently developed by Zhaoxin, mainly suitable for desktop and server solutions with high expandability requirements. The ZX-200 IO expansion chipset is compatible with the PCIe 2.0 technical specification and supports up to 9 channels of PCIe 2.0 transmission. Simultaneously, the chip integrates SATA and USB controllers, supporting up to 11 USB expansion interfaces, providing 2 USB 3.1 Gen2 (supporting the TYPE-C specification), 3 USB 3.1 Gen1, and 6 USB 2.0 interfaces for data transmission. The ZX-200 IO expansion chipset is also compatible with the SATA 3.0 technical specification, supporting up to 4 SATA interfaces, possessing excellent IO expansion characteristics, strong versatility, flexible expansion, and low power consumption. It can meet the application needs of various markets and is widely used in desktop / portable terminals, servers, embedded systems, and other market sectors.

[0061] In another embodiment, the following will be combined Figure 1This invention details the touch control and dimming principles of the touch display designed in this invention. In this embodiment, two USB hub chips (a first USB hub chip 110 and a second USB hub chip 120) are used on the VGA board 100 of the display. After the USB signal from the display control computer host 200 enters the display, it is split into two signals, each entering the first USB hub chip 110 and the second USB hub chip 120 respectively. Then, the first USB hub chip 110 and the second USB hub chip 120 each output two signals to the MCU chip 130 and the touch driver board 320, thus achieving USB hub redundancy. Therefore, even if one USB hub malfunctions, the other can still meet the system requirements, ensuring the normal operation of the display.

[0062] This embodiment presents a VGA board for a touch display. Its circuit design is simple, low-cost, and reliable. By using only one additional USB HUB chip, the failure rate of the display is greatly reduced and the reliability is improved. It is worthy of widespread application.

[0063] In some embodiments, the present invention also provides a touch display, the touch display including the VGA board for the touch display described in the above embodiments, wherein the VGA board for the touch display includes:

[0064] The first USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one path is connected to the backlight panel of the touch display, and the other path is connected to the touch driver board of the touch display.

[0065] The second USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one USB output signal is connected to the backlight panel of the touch display, and the other USB output signal is connected to the touch driver board of the touch display.

[0066] The aforementioned touch display has the following beneficial technical effects: It improves upon existing VGA boards by adding a second USB hub chip to the existing single USB hub chip. After the USB signal from the computer host enters the display's USB connector, it simultaneously enters two identical USB hub chips. These two chips operate in parallel, with identical circuitry, and their output USB signals share the same path to the next stage circuit. This ensures that even if one USB hub fails and the output USB signal disappears, the other USB hub can still provide an output signal, guaranteeing the normal operation of the touch display. This redundant USB hub design significantly reduces the display's failure rate and improves its operational reliability.

[0067] In some embodiments, the present invention also provides a computer, the computer including the touch display described in the above embodiments, the touch display including a VGA board for the touch display, the VGA board for the touch display including:

[0068] The first USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one path is connected to the backlight panel of the touch display, and the other path is connected to the touch driver board of the touch display.

[0069] The second USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one USB output signal is connected to the backlight panel of the touch display, and the other USB output signal is connected to the touch driver board of the touch display.

[0070] The aforementioned computer possesses the following beneficial technical effects: It improves upon existing VGA boards by adding a second USB hub chip to the existing single USB hub chip. The USB signal from the computer host enters the monitor's USB connector and simultaneously enters two identical USB hub chips. These two chips operate in parallel, with identical circuitry, and their output USB signals share the same path to the next stage circuit. This ensures that even if one USB hub fails and the output USB signal disappears, the other USB hub can still provide an output signal, guaranteeing the normal operation of the touch monitor. This achieves USB hub redundancy, significantly reducing the monitor's failure rate and improving its operational reliability.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A VGA board for a touch display, characterized in that, The VGA board for the touch display includes: The first USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one path is connected to the backlight panel of the touch display, and the other path is connected to the touch driver board of the touch display. The second USB HUB chip has its input connected to the USB signal output by the display control computer host, and its output is divided into two paths: one USB output signal is connected to the backlight panel of the touch display, and the other USB output signal is connected to the touch driver board of the touch display. The VGA board for the touch display also includes an MCU chip; one USB output signal from the first USB HUB chip to the backlight and one USB output signal from the second USB HUB chip to the backlight are combined and input to the MCU chip, and the MCU chip outputs an I2C signal to the backlight.

2. The VGA board for a touch display according to claim 1, characterized in that, The touch display also includes an OSD chip and an I2C isolation chip; The MCU chip also outputs another I2C signal to the I2C isolation chip, and the I2C isolation chip outputs a signal to the OSD chip.

3. The VGA board for a touch display according to claim 1, characterized in that, The touch display includes a USB isolation chip disposed between the touch driver board and the VGA board; The USB output signal from the first USB HUB chip to the touch driver board and the USB output signal from the second USB HUB chip to the touch driver board are combined and input to the USB isolation chip, and the USB isolation chip outputs a signal to the touch driver board.

4. The VGA board for a touch display according to claim 1, characterized in that, The display and control computer host includes a processor and an I / O expansion chip; The processor is configured to: Receives the inductive dimming signal via the NET bus; and The sensor-activated dimming signal is processed and then converted into a USB signal output through the IO expansion chip.

5. The VGA board for a touch display according to claim 4, characterized in that, The processor is also configured to: Receives the dimming signal from the rotary knob via the CAN bus; and The dial dimming signal is processed and then converted into a USB signal output through the IO expansion chip.

6. The VGA board for a touch display according to claim 4 or 5, characterized in that, The processor is model FT2000 / 4.

7. The VGA board for a touch display according to claim 4 or 5, characterized in that, The I / O expansion chip is model ZX-200.

8. A touch display, characterized in that, The touch display includes the VGA board for a touch display as described in any one of claims 1-7.

9. A computer, characterized in that, The computer includes the touch display as described in claim 8.

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