CN210927720U - VGA development board capable of configuring multiple functions - Google Patents
VGA development board capable of configuring multiple functions Download PDFInfo
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- CN210927720U CN210927720U CN202020308711.6U CN202020308711U CN210927720U CN 210927720 U CN210927720 U CN 210927720U CN 202020308711 U CN202020308711 U CN 202020308711U CN 210927720 U CN210927720 U CN 210927720U
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Abstract
The utility model discloses a can dispose multi-functional VGA development board, including VGA image processing circuit, RGB signal input interface, power processing circuit, configuration master control circuit, user configuration interface, function dial switch and VGA signal output interface. The method and the device can provide display of various image resolutions for a user, can realize setting of the image resolution through the dial switch on the VGA development board, enable the user to output the high frame rate resolution image only by inputting the low frame rate resolution image, and simplify the development difficulty of the user. Meanwhile, the VGA development board can realize the development of user-defined firmware through the setting of the dial switch, and convenience is provided.
Description
Technical Field
The utility model relates to a VGA image display technical field, concretely relates to can dispose multi-functional VGA development board.
Background
Most computers and external display devices are connected through analog VGA interfaces nowadays, display image information generated in a digital mode in the computers is converted into R, G, B three primary color signals and line and field synchronizing signals by a digital/analog converter in a display card, and the signals are transmitted to the display devices through cables. For analog display devices, such as analog CRT displays, the signals are fed directly to corresponding processing circuitry which drives and controls the picture tube to produce the image.
In most VGA development boards on the market, user equipment with single or incomplete function and limited input signals needs to require high performance of the user equipment, can provide RGB image signals with high frame rate, and needs to be configured with a VGA image processing master control to output VGA image signals. The performance of the user equipment cannot be low, and the user equipment can display VGA image signals without being configured with a VGA image processing master control.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can dispose multi-functional VGA development board, solve one or more among the above-mentioned prior art problem.
According to the utility model discloses a VGA development board that can dispose multi-functionally, including VGA image processing circuit, RGB signal input interface, power processing circuit, configuration master control circuit, user configuration interface, function dial switch and VGA signal output interface;
the RGB signal input interface, the power supply processing circuit, the configuration main control circuit, the user configuration interface and the VGA signal output interface are all electrically connected with the VGA image processing circuit, the configuration main control circuit is electrically connected with the power supply processing circuit, and the function dial switch is electrically connected with the configuration main control circuit.
In some embodiments, the power supply processing circuit is configured to provide power to the VGA image processing circuit and the configuration main control circuit, and the power supply range is 4.75V to 5.5V, and the power supply conversion voltage difference is low and the efficiency is high.
In some embodiments, the RGB signal input interface circuit is configured to be connected and input with external RGB signals, and the RGB signal input interface adopts an RGB888 signal format, so that the pixel reduction degree is high and the pixel is clear.
In some embodiments, the configuration master circuitry includes firmware therein, the firmware is a VGA resolution image driver, the firmware resolution supports 640 × 480, 800 × 600, 848 × 480, 1024 × 768, 1280 × 800, 1366 × 768, 1920 × 1080, and the supported resolution is wide, covering the display requirements.
In some embodiments, the function dial switch is used for setting different VGA resolution displays under the function of the configuration main control circuit firmware, and is suitable for different occasions, flexible and convenient.
In some embodiments, the user configuration interface is used for a user to develop firmware by himself, internal main control circuit firmware is not used, and the user can develop firmware by himself conveniently and flexibly.
In some embodiments, the VGA image processing circuit is configured to convert the RGB signals input by the RGB signal input interface circuit into VGA signals, and is suitable for different occasions, flexible and convenient.
In some embodiments, the VGA signal output interface is configured to connect to an external VGA line to facilitate connection to a mainstream display.
According to the utility model discloses a can dispose multi-functional VGA development board's beneficial effect is that this application can realize low frame rate conversion high frame rate VGA image, can also realize user-defined firmware development, the configuration master control of this application is from taking the firmware, the firmware includes multiple VGA resolution ratio image drive, through the setting of function dial switch, can export the VGA image signal of multiple high frame rate resolution ratio of display; the application provides a high-performance user equipment without limited input signals, which only needs the user equipment to output RGB image signals with corresponding resolution and low frame rate, and then the image resolution is set through a function dial switch, so that VGA image signals with corresponding resolution and high frame rate can be displayed, and the low frame rate is converted into the high frame rate. Meanwhile, the user can set the configuration interface by himself or herself through the configuration of the function dial switch, and VGA image signals with high resolution and frame rate can be displayed at will.
Drawings
Fig. 1 is a schematic structural diagram of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a GA image processing circuit of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
fig. 3 is a circuit diagram of an RGB signal input interface of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a power processing circuit of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a configuration main control circuit of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a function dial switch of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
fig. 7 is a circuit diagram of a user configuration interface of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
fig. 8 is a circuit diagram of a VGA signal output interface of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention;
FIG. 9 is a diagram of firmware supported display resolution for a VGA development board with configurable multiple functions, in accordance with an embodiment of the present invention;
fig. 10 is a dial setting diagram of a VGA development board capable of configuring multiple functions according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the VGA development board capable of configuring multiple functions according to the present invention comprises a VGA image processing circuit 1, an RGB signal input interface 2, a power processing circuit 3, a configuration main control circuit 4, a user configuration interface 6, a function dial switch 5 and a VGA signal output interface 7;
the RGB signal input interface 2, the power processing circuit 3, the configuration main control circuit 4, the user configuration interface 5 and the VGA signal output interface 7 are all electrically connected with the VGA image processing circuit 1, the configuration main control circuit 4 is electrically connected with the power processing circuit 3, and the function dial switch 5 is electrically connected with the configuration main control circuit 4.
As shown in fig. 2, the VGA image processing circuit 1 adopts a CH7034B chip of Chrontel corporation, and the VGA image processing circuit 1 is used for converting RGB signals input by the RGB signal input interface circuit 2 into VGA signals, and is suitable for different occasions, flexible and convenient.
As shown in fig. 3, the RGB signal input interface 2 adopts a 40PIN FPC pad, the RGB signal input interface 2 is used for connecting and inputting external RGB signals, the RGB signal input interface adopts an RGB888 signal format, and the pixel reduction degree is high and clear.
As shown in fig. 4: the power supply processing circuit 3 comprises a circuit for converting 5V voltage into 3.3V voltage and a circuit for converting 5V voltage into 1.8V voltage, an ASM1117-3.3 voltage stabilizing chip is adopted for converting 5V voltage into 3.3V voltage, an RT9193-1.8 voltage stabilizing chip is adopted for converting 5V voltage into 1.8V voltage, the power supply processing circuit 3 is used for providing power supply for the VGA image processing circuit 1 and the configuration main control circuit 4, the voltage range is 4.75V-5.5V, the power supply conversion voltage difference is low, and the efficiency is high.
As shown in fig. 5, the configuration main control circuit 4 adopts a single chip microcomputer of HC32F0005C6UA model, and the configuration main control circuit 4 internally includes firmware, which is VGA resolution image driver; the firmware resolution supports 640 × 480, 800 × 600, 848 × 480, 1024 × 768, 1280 × 800, 1366 × 768 and 1920 × 1080, and the supported resolution is wide and covers the display requirement.
As shown in fig. 6, the dial switch 5 is 5PIN, and the function dial switch 5 is used to set different VGA resolution displays under the firmware function of the configuration main control circuit 4.
As shown in fig. 7, the user configuration interface 6 adopts a 3PIN arrangement interface, and the user configuration interface 6 is used for a user to develop firmware by himself, does not use internal main control circuit firmware, and is convenient and flexible for the user to develop firmware by himself.
As shown in fig. 8, the VGA signal output interface 7 includes a VGA interface socket and a switching diode, the switching diode adopts MMBD7000LT1G, and the VGA signal output interface 7 is used for connecting with an external VGA line, so as to be connected with a mainstream display.
As shown in fig. 9, fig. 9 is a diagram of firmware supported display resolution.
As shown in fig. 10, SW1, SW2, SW3, SW4 and SW5 in fig. 10 are 1, 2, 3, 4 and 5 dials of the dial switch 5, and are ON when turned ON and OFF when turned OFF.
Specifically, when a user uses various resolutions provided by the VGA development board firmware of the application, a function dial switch 5 is arranged, the switch is set to have a corresponding resolution, then the user inputs the RGB signals with a low frame rate, VGA signal conversion is carried out through the VGA image processing circuit 1, and finally the VGA signals are connected to a display through an output interface and can be displayed. If the user needs to define the resolution, a function dial switch 5 is set, the switch is set to define the development function, then the user inputs a configuration signal to a user configuration interface 6 of the VGA development board of the application to configure the VGA image processing circuit 1, then the RGB signals with corresponding resolution are input to the RGB signal input interface 2, VGA signal conversion is carried out through the VGA image processing circuit, and finally the VGA signals are connected to a display through a VGA signal output interface 7 to be displayed.
The above is only a preferred mode of the present invention, and it should be noted that, for those skilled in the art, a plurality of similar modifications and improvements can be made without departing from the inventive concept of the present invention, and these are also considered to be within the protection of the present invention.
Claims (8)
1. A VGA development board capable of configuring multiple functions, comprising: the device comprises a VGA image processing circuit (1), an RGB signal input interface (2), a power supply processing circuit (3), a configuration main control circuit (4), a user configuration interface (6), a function dial switch (5) and a VGA signal output interface (7);
the RGB signal input interface (2), the power supply processing circuit (3), the configuration main control circuit (4), the user configuration interface (6) and the VGA signal output interface (7) are electrically connected with the VGA image processing circuit (1), the configuration main control circuit (4) is electrically connected with the power supply processing circuit (3), and the function dial switch (5) is electrically connected with the configuration main control circuit (4).
2. The VGA development board with multiple configurable functions as claimed in claim 1, wherein the power supply processing circuit (3) is used for supplying power to the VGA image processing circuit (1) and the configuration master control circuit (4), and the voltage range is 4.75V-5.5V.
3. The VGA development board capable of configuring multiple functions as claimed in claim 1, wherein the RGB signal input interface (2) is used for connecting and inputting external RGB signals, and the RGB signal input interface (2) adopts an RGB888 signal format.
4. The VGA development board capable of configuring multiple functions as claimed in claim 1, wherein the configuration master circuit (4) internally comprises firmware which is a VGA resolution image driver.
5. The VGA development board with multiple configurable functions as claimed in claim 1, wherein the function dial switch (5) is used for setting different VGA resolution displays under the firmware function of the configuration master control circuit (4).
6. The VGA development board with configurable functions as claimed in claim 1, wherein the user configuration interface (6) is used for the user to develop firmware by himself without using internal master control circuit firmware.
7. The VGA development board capable of configuring multiple functions as claimed in claim 1, wherein the VGA image processing circuit (1) is used for converting RGB signals input by the RGB signal input interface circuit (2) into VGA signals.
8. VGA development board capable of configuring multiple functions as claimed in claim 1, wherein said VGA signal output interface (7) is used for connecting with an external VGA line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020308711.6U CN210927720U (en) | 2020-03-13 | 2020-03-13 | VGA development board capable of configuring multiple functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020308711.6U CN210927720U (en) | 2020-03-13 | 2020-03-13 | VGA development board capable of configuring multiple functions |
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| Publication Number | Publication Date |
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| CN210927720U true CN210927720U (en) | 2020-07-03 |
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| CN202020308711.6U Active CN210927720U (en) | 2020-03-13 | 2020-03-13 | VGA development board capable of configuring multiple functions |
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