CN215814137U

CN215814137U - Board-mounted HDMI EDID information burning tool

Info

Publication number: CN215814137U
Application number: CN202122433748.9U
Authority: CN
Inventors: 梁香勇; 肖灵娟
Original assignee: Dongguan Huiqin Zhiyuan Technology Co ltd
Current assignee: Dongguan Huiqin Zhiyuan Technology Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-02-11
Anticipated expiration: 2031-10-09

Abstract

The application relates to information burns and writes technical field, especially a board-borne HDMI EDID information burns and writes instrument, and it includes the PCB board, still including burning the circuit, burns and writes the circuit and set up on the PCB board, burns and writes the circuit and include: the single chip microcomputer controller is used for burning EDID data, the chip power supply module is used for providing working voltage for the single chip microcomputer controller, the interface module is used for achieving connection between the single chip microcomputer controller and a computer host, the HDMI connecting module is used for achieving connection between the single chip microcomputer controller and the HDMI main device, and the single chip microcomputer controller interface device has the advantage of improving burning efficiency of EDID information.

Description

Board-mounted HDMI EDID information burning tool

Technical Field

The application relates to the technical field of information burning, in particular to a board-mounted HDMI EDID information burning tool.

Background

Extended Display Identification Data (Extended Display Identification Data) is a VESA standard Data format that contains parameters relating to the monitor and its capabilities, including vendor information, maximum image size, color settings, vendor presets, limits on frequency range, and strings of Display names and serial numbers. This information is typically stored in EEPROM and is used to communicate with the system via a ddc (display Data channel) between the display and the PC graphics adapter.

In the related technology, the conventional method for burning the EDID information generally includes burning the EDID information into an EEPROM chip in advance, then mounting the EEPROM chip on a PCB, after the EEPROM chip is mounted on the PCB, detaching the EEPROM chip from the PCB if the EDID information is to be modified, then burning the EEPROM chip on a burner, and then re-soldering the EEPROM chip on the PCB after the EEPROM chip is burned.

SUMMERY OF THE UTILITY MODEL

In order to improve the burning efficiency of EDID information, the application provides a board-mounted HDMI EDID information burning tool.

The application provides a board-mounted HDMI EDID information burns record instrument adopts following technical scheme:

the utility model provides a board-mounted HDMI EDID information burns record instrument, includes the PCB board, still includes to burn and records the circuit, it sets up on the PCB board to burn records the circuit, it includes to burn records the circuit:

and the singlechip controller is used for burning EDID data.

And the chip power supply module is used for providing working voltage for the single chip microcomputer controller.

And the interface module is used for realizing the connection between the singlechip controller and the computer host.

And the HDMI connecting module is used for realizing the connection between the single chip microcomputer controller and the HDMI main equipment.

The power supply input end of the single chip microcomputer controller is connected with the power supply output end of the chip power supply module, one data transmission end of the interface module is connected with the data receiving end of the single chip microcomputer controller, the other data transmission end of the interface module is connected with a computer host, one data connection end of the HDMI connection module is connected with the data output end of the single chip microcomputer controller, and one data connection end of the HDMI connection module is connected with the display device.

By adopting the technical scheme, the EDID information burning process comprises the following steps of realizing the connection between the single-chip microcomputer controller and the display equipment through the HDMI connecting module, realizing the connection between the single-chip microcomputer controller and the computer host through the interface module, starting the chip power supply module to supply power to the single-chip microcomputer controller, starting the burning software of the computer host to burn the EDID information to the single-chip microcomputer controller, and reading the EDID information to the display equipment through the HDMI connecting module; the operation can be carried out onboard, the necessity of removing the EEPROM chip in the related technology is reduced, and the burning efficiency of the EDID information is indirectly improved.

Preferably, the burning circuit further comprises an EDID information selection module, and an output end of the EDID information selection module is connected with an EDID information selection end of the single chip microcomputer controller.

By adopting the technical scheme, the user can select the type of the EDID information required to be burned by the singlechip controller by operating the EDID information selection module.

Preferably, the burning circuit further comprises a state prompting module, one signal receiving end of the state prompting module is connected with the signal output end of the chip power supply module, and the other signal receiving end of the state prompting module is connected with the signal output end of the single chip microcomputer controller.

By adopting the technical scheme, after the chip power supply module supplies power to the single chip microcomputer controller, the state prompting module prompts to enable a user to know that the single chip microcomputer controller is in a power-on state, and after the single chip microcomputer controller finishes burning, the state prompting module prompts to enable the user to know that the single chip microcomputer controller finishes burning.

Preferably, the chip power supply module comprises a voltage selection switch and a voltage stabilizing circuit, an input end of the voltage selection switch is connected with a power supply source, one output end of the voltage selection switch is connected with one power supply input end of the single chip microcomputer controller, the other output end of the voltage selection switch is connected with a signal input end of the voltage stabilizing circuit, and the voltage stabilizing circuit is connected with the other power supply input end of the single chip microcomputer controller.

By adopting the technical scheme, when the singlechip controller needs to be connected with normal working voltage, the voltage selection switch is controlled, so that one output end of the voltage selection switch is directly connected with one power supply input end of the singlechip controller, and a power supply directly supplies voltage to the singlechip controller; when the singlechip controller needs to be connected with more stable voltage, the voltage selection switch is controlled to enable another output end of the voltage selection switch to be connected with a signal input end of the voltage stabilizing circuit, the voltage stabilizing circuit is connected with another power supply input end of the singlechip controller, and voltage provided by the power supply source is reduced and stabilized by the voltage stabilizing circuit and then enters the singlechip controller, so that the practicability of the onboard HDMI EDID information burning tool is improved.

Preferably, the burning circuit further comprises a serial port output module, an input end of the serial port output module is connected with an EDID information output end of the single chip microcomputer controller, and an output end of the serial port output module is connected with the computer host.

By adopting the technical scheme, after the singlechip controller finishes burning, the EDID information stored in the singlechip controller can be transmitted to the computer host through the serial port output module, and then whether the burnt EDID information is consistent with the EDID information preset by a user or not can be compared.

Preferably, the interface module comprises a USB interface and a selection terminal, one data transmission end of the USB interface is connected to the host computer, the other data transmission end of the USB interface is connected to the access end of the selection terminal, one selection end of the selection terminal is connected to the data receiving end of the single chip microcomputer controller, and the other selection end of the selection terminal is connected to the output end of the serial port output module.

By adopting the technical scheme, when the burning is required, one data transmission end of the USB interface is connected with the computer host, the other data transmission end of the USB interface is connected with the access end of the selection terminal, the selection terminal is controlled, so that one selection end of the selection terminal is communicated with the data receiving end of the single chip microcomputer controller, and at the moment, the EDID information can flow into the single chip microcomputer controller from the computer host to realize the burning; it is relative, the terminal is selected in the control, another select terminal of selecting the terminal communicates with serial ports output module's output, simultaneously, serial ports output module's input and single chip microcomputer controller's EDID information output end intercommunication, consequently, the interior EDID information accessible serial ports output module of storage of single chip microcomputer controller carries to the computer host in, and only need use a USB interface alright realize the bidirectional transmission of EDID information, the practicality of this board-mounted HDMI EDID information burning instrument has further been improved.

Preferably, the burning circuit further comprises a switch control module, and a power supply control end of the switch control module is connected with the USB interface.

By adopting the technical scheme, the switch control module is controlled to realize the opening or closing of the USB interface, so that multiple guarantees can be played, and the occurrence of the situation that wrong EDID information is burnt into the singlechip controller due to misoperation of a user is reduced.

Preferably, the switch control module comprises a reset control unit, and the reset control unit is connected with the single chip microcomputer controller.

By adopting the technical scheme, the user can reset the single chip microcomputer controller by controlling the reset control unit, and then the EDID information in the single chip microcomputer controller can be conveniently and quickly reset.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the method comprises the steps that connection between a single chip microcomputer controller and a computer host is achieved through an interface module, a chip power supply module is started to supply power to the single chip microcomputer controller, burning software of the computer host is started to burn EDID information to the single chip microcomputer controller, and the EDID information is read to display equipment through an HDMI connection module; the necessity of removing the EEPROM chip in the related technology is reduced, and the burning efficiency of the EDID information is indirectly improved;

2. the board-mounted HDMI EDID information burning tool has good practicability;

3. this board carries HDMI EDID information burning instrument easy operation in this application, and convenient and fast.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic circuit diagram of a single chip controller and a chip power supply module in an embodiment of the present application.

FIG. 3 is a schematic circuit diagram of a single-chip microcomputer controller, a status prompting module and a voltage stabilizing circuit according to an embodiment of the present application.

Fig. 4 is a schematic circuit diagram of the single-chip microcomputer controller, the serial output module, the interface module, and the switch control module in the embodiment of the present application.

Fig. 5 is a schematic circuit diagram of the single chip microcomputer controller and the EDID information selection module in the embodiment of the present application.

Fig. 6 is a schematic circuit diagram of the connection module between the single-chip microcomputer controller and the HDMI in the embodiment of the present application.

Description of reference numerals: 1. a PCB board; 2. a burning circuit; 21. a single chip controller; 22. a chip power supply module; 221. a voltage selection switch; 222. a voltage stabilizing circuit; 23. a status prompt module; 24. an interface module; 241. a USB interface; 242. a selection terminal; 25. a serial port output module; 26. an EDID information selection module; 27. a switch control module; 28. HDMI connection module.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a board-mounted HDMI EDID information burning tool. Referring to fig. 1, a board-mounted HDMI EDID information burning tool includes a PCB 1 and a burning circuit 2, the burning circuit 2 is mounted on the PCB 1, in this embodiment, the PCB 1 is a conventional circuit board for loading the burning circuit 2, the burning circuit 2 includes a single-chip microcomputer controller 21, a chip power supply module 22, a status prompt module 23, an interface module 24, a serial output module 25, an EDID information selection module, a switch control module 27, and an HDMI connection module 28, the single-chip microcomputer controller 21 is used for burning EDID data, the chip power supply module 22 is used for supplying a working voltage to the single-chip microcomputer controller 21, the status prompt module 23 is used for displaying the working status of the single-chip microcomputer controller 21, the interface module 24 is used for realizing connection between the single-chip microcomputer controller 21 and a computer host, the serial output module 25 is used for printing and outputting EDID information in the single-chip microcomputer controller 21 to the computer host, the EDID information selection module is used for controlling the single chip microcomputer controller to select the type of the EDID information to be burned, the switch control module 27 is used for starting the burning operation of the single chip microcomputer controller 21, and the HDMI connection module 28 is used for realizing the connection between the single chip microcomputer controller 21 and the HDMI main device so as to burn the EDID information.

The following is a detailed description of the burning circuit 2:

referring to fig. 2, the mcu 21 is provided as a chip U1, in this embodiment, the model of the chip U1 is set to CH554T, and the chip U1 can correspondingly store EDID information. In addition, the chip power supply module 22 includes a voltage selection switch 221 and a voltage stabilizing circuit 222, the voltage selection switch 221 is set to be a pin bank P1, meanwhile, a sixth pin of the pin bank P1 is electrically connected to a 5v power supply, correspondingly, the single chip microcomputer controller 21 is provided with two power supply input ends, one of the power supply input ends is set to be a nineteenth pin of the chip U1, and a fifth pin of the pin bank P1 is electrically connected to a nineteenth pin of the chip U1.

When the single chip microcomputer controller 21 needs to be connected with 5V working voltage, the fifth pin of the pin header male seat P1 is in short circuit with the sixth pin of the pin header male seat P1, an electric signal of a 5V power supply flows in through the sixth pin of the pin header male seat P1, flows out from the fifth pin of the pin header male seat P1, finally flows to the nineteenth pin of the chip U1, and after the nineteenth pin of the chip U1 receives the electric signal, the chip U1 is started.

Conversely, the input terminal of the regulator 222 is also electrically connected to the 5v power supply, and the output terminal of the regulator 222 is electrically connected to the third pin of the pin header P1, in this embodiment, the regulator 222 is a conventional regulator 222. In addition, the other power supply input end of the single chip microcomputer controller 21 is set as the twentieth pin of the chip U1, the fourth pin of the pin header P1 is electrically connected with the twentieth pin of the chip U1, and meanwhile, the second pin of the pin header P1 is electrically connected with the nineteenth pin of the chip U1.

When the single chip microcomputer controller 21 needs to access 3.3V working voltage, the second pin of the pin header male seat P1 is in short circuit with the third pin of the pin header male seat P1, meanwhile, the fourth pin of the pin header male seat P1 is in short circuit with the fifth pin of the pin header male seat P1, a 5V power supply is reduced to 3.3V after passing through the voltage stabilizing circuit 222, the 3.3V voltage is provided to the chip U1 through the pin header male seat P1, and the chip U1 is started.

Therefore, the two operations can select the required working voltage for the single chip microcomputer controller 21, and the practicability of the onboard HDMI EDID information burning tool is further improved.

Referring to fig. 3, correspondingly, the state indicating module 23 includes a resistor R3, a light emitting diode D1, a light emitting diode D2, and a resistor R4, in this embodiment, the state indicating module 23 is provided with two signal receiving terminals, one of the signal receiving terminals of the state indicating module 23 is set as one end of the resistor R3, the signal output terminal of the chip power supply module 22 is set as the output terminal of the voltage stabilizing circuit 222, one end of the resistor R3 is electrically connected to the output terminal of the voltage stabilizing circuit 222, the anode of the light emitting diode D1 is electrically connected to the other end of the resistor R3, and the cathode of the light emitting diode D1 is grounded.

In addition, in the present embodiment, the other signal receiving terminal of the status prompt module 23 is set as the anode of the led D2, the signal output terminal of the mcu 21 is set as the seventeenth pin of the chip U1, the anode of the led D2 is electrically connected to the seventeenth pin of the chip U1, one end of the resistor R4 is electrically connected to the cathode of the led D2, and the other end of the resistor R4 is grounded.

When the resistor R3 is connected to the output terminal of the voltage regulator 222, the anode of the led D1 is powered on, and the led D1 emits light, so that the user knows that the mcu 21 is in the powered state, and when the mcu 21 completes the programming, the seventeenth pin of the chip U1 emits an electrical signal, and the anode of the led D2 receives the electrical signal, and the led D2 emits light, so that the user knows that the mcu 21 has completed the programming.

Referring to fig. 4, in addition, the interface module 24 includes a USB interface 241 and a selection terminal 242, in this embodiment, the type of the USB interface 241 is Micro USB, and in the circuit diagram of the present application, the USB interface 241 is set as an interface J1, the selection terminal 242 is set as a pin bank P2, the USB interface 241 is provided with two data transmission terminals, one data transmission terminal of the USB interface 241 is electrically connected to a USB socket on a computer host, the other data transmission terminal of the USB interface 241 is set as a second pin and a third pin of an interface J1, the second pin of the pin bank P2 is electrically connected to the second pin of the interface J1, meanwhile, the fifth pin of the pin bank P2 is electrically connected to the third pin of the interface J1, and the second pin of the pin bank P2 is electrically connected to the second pin of the interface J1. Correspondingly, the third pin of the pin header P2 is electrically connected to the fifteenth pin of the chip U1, and the sixth pin of the pin header P2 is electrically connected to the fourteenth pin of the chip U1.

In addition, the burning circuit 2 is further provided with a power-on module, the power-on module comprises a switch K3, a second pin of the switch K3 is connected with a 5V voltage source, a third pin of the switch K3 is electrically connected with a first pin of the interface J1, when the second pin and the third pin of the switch K3 are in short circuit, the first pin of the interface J1 has voltage input, the USB interface 241 is switched on at the moment, and the USB interface 241 can work normally.

In this embodiment, the selection terminal 242 is provided with two selection terminals, one of the selection terminals is a third pin of the pin header P2 and a sixth pin of the pin header P2, the single chip microcomputer controller 21 is provided with a data receiving terminal, the data receiving terminal is correspondingly provided with a fifteenth pin and a fourteenth pin of the chip U1, the third pin of the pin header P2 is electrically connected with the fifteenth pin of the chip U1, and the sixth pin of the pin header P2 is electrically connected with the fourteenth pin of the chip U1.

When the programming is needed, one of the data transmission ends of the USB interface 241 is electrically connected to the USB socket of the computer host, the second pin of the pin header P2 is electrically connected to the third pin of the pin header P2, the fifth pin of the pin header P2 is electrically connected to the sixth pin of the pin header P2, and at this time, the EDID information in the computer host can enter the single chip microcomputer controller 21 through the USB interface 241 and the selection terminal 242, thereby completing the programming.

Continuing to refer to fig. 4, further, the serial output module 25 includes a chip U2, in this embodiment, the model of the chip U2 is set to CH340C, the input terminal of the serial output module 25 is set to the second pin and the third pin of the chip U2, correspondingly, the EDID information output terminal of the single chip microcomputer controller 21 is set to the ninth pin and the tenth pin of the chip U1, the second pin of the chip U2 is electrically connected to the tenth pin of the chip U1, and the third pin of the chip U2 is electrically connected to the ninth pin of the chip U1.

Meanwhile, the output end of the serial output module 25 is set to be the fifth pin and the sixth pin of the chip U1, the other selection end of the selection terminal 242 is set to be the first pin and the fourth pin of the pin header P2, the fifth pin of the chip U1 is electrically connected to the fourth pin of the pin header P2, and the sixth pin of the chip U1 is electrically connected to the first pin of the pin header P2.

Specifically, the fifth pin of the pin arranging male seat P2 and the fourth pin of the pin arranging male seat P2 are in short circuit connection, meanwhile, the first pin of the pin arranging male seat P2 and the second pin of the pin arranging male seat P2 are in short circuit connection, after the burning of the single chip microcomputer controller 21 is completed, the EDID information can be conveyed to the chip U2 from the ninth pin and the tenth pin of the chip U1, the EDID information is output through the fifth pin and the sixth pin of the chip U2, the EDID information passes through the interface J1, and is conveyed into the computer host through the pin arranging male seat P1, and then whether the burnt EDID information is consistent with the EDID information preset by a user or not can be compared.

Referring to fig. 5, in addition, the EDID information selection module 26 includes a pin header P4, a first pin and a third pin of the pin header P4 are electrically connected to a second pin of the chip U1, a fifth pin and a seventh pin of the pin header P4 are electrically connected to a third pin of the chip U1, and a ninth pin and an eleventh pin of the pin header P4 are electrically connected to a fourth pin of the chip U1. In addition, the second pin, the sixth pin and the tenth pin of the pin header P4 are all electrically connected with the nineteenth pin of the chip U1, and the fourth pin, the eighth pin and the twelfth pin of the pin header P4 are all grounded. After the chip U1 is powered on, the chip U1 reads the status values of the second pin, the third pin and the fourth pin of the chip U1, and thus selects the type of the EDID information required for entry.

Referring back to fig. 4, correspondingly, the switch control module 27 includes a key switch K1 and a resistor R1, wherein one end of the key switch K1 is electrically connected to the twentieth pin of the chip U1, one end of the resistor R1 is electrically connected to the other end of the key switch K1, and the other end of the resistor R1 is electrically connected to the third pin of the interface J1.

When the single chip microcomputer controller 21 is in a power-on state and a user presses the key switch K1, the third pin of the interface J1 receives an electrical signal given by the twentieth pin of the chip U1, and the electrical signal is transmitted into the fourteenth pin and the fifteenth pin of the chip U1 through the pin header P2 to start burning.

Further, the switch control module 27 further includes a reset control unit, in this embodiment, the reset control unit is configured as a key switch K2, one end of the key switch K2 is electrically connected to the twentieth pin of the chip U1, and the other end of the key switch K2 is electrically connected to the sixth pin of the chip U1.

When the single chip microcomputer controller 21 is in a power-on state and a user presses the key switch K2, the sixth pin of the chip U1 receives an electric signal, the single chip microcomputer controller 21 resets, and then EDID information in the single chip microcomputer controller 21 is conveniently and quickly reset.

Referring to fig. 6, in addition, the HDMI connecting module 28 includes an HDMI interface, the seventh pin and the eighth pin of the chip U1 are commonly connected to a pin header P3, and the pin header P3 is electrically connected to the HDMI interface.

The implementation principle of a board-mounted HDMI EDID information burning tool in the embodiment of the application is as follows: the EDID information burning process comprises the following steps of realizing the connection between the single-chip microcomputer controller 21 and the display equipment through the HDMI connection module 28, realizing the connection between the single-chip microcomputer controller 21 and the computer host through the interface module 24, starting the chip power supply module 22 to supply power to the single-chip microcomputer controller 21, starting the burning software of the computer host to burn the EDID information to the single-chip microcomputer controller 21, and reading the EDID information to the display equipment through the HDMI connection module 28; the operation can be carried out onboard, the necessity of removing the EEPROM chip in the related technology is reduced, and the burning efficiency of the EDID information is indirectly improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a board-mounted HDMI EDID information burns record instrument, includes PCB board (1), its characterized in that: still including burning recording circuit (2), burning recording circuit (2) sets up on PCB board (1), burning recording circuit (2) includes:

the single chip microcomputer controller (21) is used for burning EDID data;

the chip power supply module (22) is used for providing working voltage for the single chip microcomputer controller (21);

the interface module (24) is used for realizing the connection between the singlechip controller (21) and the computer host;

the HDMI connecting module (28) is used for realizing the connection between the single chip microcomputer controller (21) and the HDMI main equipment;

the power supply input end of the single chip microcomputer controller (21) is connected with the power supply output end of the chip power supply module (22), one of the data transmission ends of the interface module (24) is connected with the data receiving end of the single chip microcomputer controller (21), the other data transmission end of the interface module (24) is connected with a computer host, one of the data connection ends of the HDMI connection module (28) is connected with the data output end of the single chip microcomputer controller (21), and one of the data connection ends of the HDMI connection module (28) is connected with the display device.

2. The on-board HDMI EDID information burning tool of claim 1, wherein: the burning circuit (2) further comprises an EDID information selection module (26), and the output end of the EDID information selection module (26) is connected with the EDID information selection end of the single chip microcomputer controller (21).

3. The on-board HDMI EDID information burning tool of claim 1, wherein: the burning circuit (2) further comprises a state prompt module (23), one signal receiving end of the state prompt module (23) is connected with the signal output end of the chip power supply module (22), and the other signal receiving end of the state prompt module (23) is connected with the signal output end of the single chip microcomputer controller (21).

4. The on-board HDMI EDID information burning tool of claim 1, wherein: the chip power supply module (22) comprises a voltage selection switch (221) and a voltage stabilizing circuit (222), wherein the input end of the voltage selection switch (221) is connected with a power supply source, one output end of the voltage selection switch (221) is connected with one power supply input end of the single chip microcomputer controller (21), the other output end of the voltage selection switch (221) is connected with a signal input end of the voltage stabilizing circuit (222), and the voltage stabilizing circuit (222) is connected with the other power supply input end of the single chip microcomputer controller (21).

5. The on-board HDMI EDID information burning tool of claim 1, wherein: the burning circuit (2) further comprises a serial port output module (25), the input end of the serial port output module (25) is connected with the EDID information output end of the single chip microcomputer controller (21), and the output end of the serial port output module (25) is connected with a computer host.

6. The on-board HDMI EDID information burning tool of claim 5, wherein: the interface module (24) comprises a USB interface (241) and a selection terminal (242), one data transmission end of the USB interface (241) is connected with a computer host, the other data transmission end of the USB interface (241) is connected with the access end of the selection terminal (242), one selection end of the selection terminal (242) is connected with the data receiving end of the single chip microcomputer controller (21), and the other selection end of the selection terminal (242) is connected with the output end of the serial port output module (25).

7. The on-board HDMI EDID information burning tool of claim 6, wherein: the burning circuit (2) further comprises a switch control module (27), and a power supply control end of the switch control module (27) is connected with the USB interface (241).

8. The on-board HDMI EDID information burning tool of claim 7, wherein: the switch control module (27) comprises a reset control unit, and the reset control unit is connected with the single chip microcomputer controller (21).