CN217740141U - Display device with signal conversion function - Google Patents
Display device with signal conversion function Download PDFInfo
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- CN217740141U CN217740141U CN202221764016.6U CN202221764016U CN217740141U CN 217740141 U CN217740141 U CN 217740141U CN 202221764016 U CN202221764016 U CN 202221764016U CN 217740141 U CN217740141 U CN 217740141U
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Abstract
The utility model provides a display device with signal conversion function, it includes: the signal conversion module is respectively in communication connection with the computer terminal and the screen module; the signal conversion module comprises a micro control unit, a signal bridging unit and a power supply unit; the micro control unit receives the screen module parameter information data transmitted from the computer terminal, and the signal bridging unit generates EDID information data of the screen module according to the screen module parameter information data; the computer end is in communication connection with the micro control unit and the signal bridging unit, and is configured to receive EDID information data and output an HDMI signal generated based on the EDID information data to the signal conversion module; the power supply unit is configured to output a voltage to the screen module; the signal bridging unit is configured to receive the HDMI signal, convert the HDMI signal into an MIPI signal, and drive the screen module to light up. The signal conversion module has simple structure and needs less parameter information data.
Description
Technical Field
The utility model relates to a screen detection technical field specifically relates to a display device with signal conversion function.
Background
In the field of traditional MIPI screen module display detection, an image generator and a computer are combined to carry out lighting test on a mobile phone module. The image generator equipment comprises a plurality of systems, such as an FPGA system, an ARM system, a network system, a power supply system and the like, which are all equipment customized and developed by an image generator manufacturer, and has the disadvantages of complex equipment, high development difficulty and high development cost. And the level output by the FPGA can only be RGB signals of TTL level, for a screen module adopting MIPI signals, corresponding MIPI signals can be output to light the screen module by arranging a special chip for converting additional RGB signals into MIPI signals, the lighting debugging process is complex, and the communication between the image generator and the computer is complex.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a display device with signal conversion function.
The utility model provides a display device with signal conversion function, a serial communication port, include: the signal conversion module is respectively in communication connection with the computer terminal and the screen module;
the signal conversion module comprises a micro control unit, a signal bridging unit and a power supply unit;
the micro control unit is configured to receive screen module parameter information data transmitted from the computer terminal, and the signal bridging unit generates EDID information data of the screen module according to the screen module parameter information data;
the computer end is in communication connection with the micro control unit and the signal bridging unit, and is configured to receive the EDID information data and output an HDMI signal generated based on the EDID information data to the signal conversion module;
the power supply unit is configured to output a corresponding voltage to the screen module;
the signal bridging unit is configured to receive the HDMI signal, convert the HDMI signal into an MIPI signal, and drive the screen module to light up.
As a further improvement of the utility model, the micro control unit is connected with the computer end through UART serial port communication.
As a further improvement of the utility model, the computer end includes the memory, the memory has been preserved screen module parameter information data, the computer end still by the configuration be used for to little the control unit passes through the UART serial ports is sent screen module parameter information data.
As a further improvement of the present invention, the memory holds the resolution information data, the refresh rate information data, the initialization code information data, and the screen power supply parameter information data of the screen module.
As a further improvement of the present invention, the bridging unit is further configured to generate the corresponding EDID information data according to the resolution information data, the initialization code information data and the screen power supply parameter information data of the screen module.
As a further improvement of the utility model, the signal bridging unit with connect through the HDMI cable communication between the computer end, the signal bridging unit with connect through the I2C communication protocol communication between the little the control unit.
As a further improvement of the utility model, the signal bridging unit includes signal bridging chip and screen end connector, the signal bridging chip is the RK628 chip, the screen end connector with the screen module links to each other, inputs to it the signal data of sending of bridging chip reaches the voltage that electrical unit exported.
As a further improvement of the utility model, the signal bridging chip is configured to be used for with screen module initialization code information data conversion is MIPI LP signal send to the screen module.
As the utility model discloses a further improvement, signal bridging chip is still configured and is used for receiving the HDMI signal is converted it into MIPI HS signal and is exported, drives the screen module is lighted.
As a further improvement of the present invention, the power unit is configured to input a corresponding voltage signal to the screen end connector according to the screen module power parameter information.
The utility model has the advantages that: the utility model provides a display device with signal conversion function can be according to the HDMI signal that the parameter information automatic output of screen module corresponds to through the automatic work of lighting up of accomplishing the screen module with HDMI signal conversion to MIPI signal conversion of signal conversion module. The signal conversion module has the advantages that the signal conversion module can be integrated in a circuit board, the structure is simple, and complex installation cost is not needed. Second, the display device transmits the HDMI signal with strong anti-interference capability directly through the computer terminal, and can stably transmit images and video signals in complex environments such as automation. Thirdly, compared with the traditional image generator equipment, the equipment does not need special upper computer software and script files for writing the screen module, only needs to transmit resolution information data, refresh rate information data, initialization information, power parameters and other data of the screen module, can finish the lighting work of the screen module, and is simple to operate. Fourthly, the development cycle of the device is short, the traditional image generator device needs special FPGA, ARM, a power supply and the like, developers need to spend a long time for development, the device is only provided with a simple micro control unit, and the developers only need to compile corresponding serial port communication and I2C communication.
Drawings
Fig. 1 is a block diagram schematically illustrating a display device having a signal conversion function according to an embodiment of the present invention.
Fig. 2 is a block diagram schematically illustrating a structure of a signal conversion module in a display device having a signal conversion function according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to the detailed description of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
The embodiment provides a display device with a signal conversion function, which can convert an HDMI (High Definition Multimedia Interface) signal into an MIPI (Mobile Industry Processor Interface) signal, can be applied to automatically detect an MIPI Interface screen and a GMSL (Gigabit Multimedia Serial Links) signal vehicle-mounted screen module 3, does not need to use image generator equipment with a complex system, can automatically adjust a display image according to parameters of the screen module 3 for different screen modules 3, and does not need to write a debugging script file.
As shown in fig. 1, the display device having a signal conversion function includes: the system comprises a computer terminal 1, a signal conversion module 2 and a screen module 3, wherein the signal conversion module 2 is respectively in communication connection with the computer terminal 1 and the screen module 3.
The computer terminal 1 is provided with an HDMI interface, which is mainly configured to obtain parameter information of the screen module 3 and output an HDMI signal to the signal conversion module 2 according to the parameter information. The HDMI is a fully digital video and audio transmission interface, can transmit uncompressed audio and video signals, has excellent anti-interference performance and stability, and can stably transmit images and video signals in complex environments such as automation.
The screen module 3 is a display screen adopting a MIPI interface, the MIPI interface is based on an open standard established by a MIPI alliance for the mobile application processor, and the screen module 3 adopting the unified MIPI interface standard needs a corresponding MIPI signal to finish the lightening work of the display screen.
In addition, generally, a dedicated chip for converting the MIPI signal into the GMSL signal is required for the vehicle-mounted screen module 3 using the GMSL signal in the market, and therefore, the vehicle-mounted screen module 3 needs to be detected by combining the screen module 3 using the MIPI interface with a bridge chip for converting the MIPI signal into the GSML signal.
As shown in fig. 2, the signal conversion module 2 is mainly used for converting the HDMI signal received from the computer 1 into an MIPI signal and outputting the MIPI signal to the screen module 3, and includes a micro control unit 21, a signal bridging unit 22 and a power supply unit 23.
The micro control unit 21 is configured to acquire parameter information of the screen module 3, and control and configure parameters of the signal bridging unit 22 and the power supply unit 23; the signal bridging unit 22 is configured to receive the HDMI signal, convert the HDMI signal into an MIPI signal, and drive the screen module 3 to light up; the power supply unit 23 is configured to output a corresponding voltage to the screen module 3.
The micro control unit 21, the signal bridging unit 22 and the power supply unit 23 are integrated in one circuit board, the structure is simple, the lighting processing of any screen module 3 can be completed through the three units, and compared with the traditional image generator device, the device has no complex parts and does not need complex installation cost. Moreover, the signal conversion module 2 can be conveniently installed inside the automation device due to integration in one circuit board.
Specifically, the micro control unit 21 is in serial communication connection with the computer end 1 through a UART (Universal Asynchronous Receiver/Transmitter), and the computer end 1 is further configured to send parameter information of the screen module 3 to the micro control unit 21 through a UART serial port. The UART is a general serial data bus for asynchronous communication, and bidirectional communication of the UART can implement full duplex transmission and reception. The computer end 1 comprises a memory, the memory stores parameter information of the screen module 3, and the computer end sends information such as resolution information data, refresh rate information data, initialization code information data and screen power supply parameters of the screen module 3 to the micro control unit 21 through a UART serial port. The parameter information of the screen module 3 can be pre-stored in the computer 1, or written and stored in the computer 1 according to different screen modules 3.
Parameters such as resolution information data and refresh rate information data are used for configuring display parameters of the screen module 3, initialization code information data are used for initially setting the screen module 3, and power parameter information is used for configuring the power unit 23 and powering on the screen module 3.
Specifically, the micro control unit 21 and the signal bridging unit 22 are connected through an I2C (Inter-Integrated Circuit) communication protocol, so that the I2C communication protocol requires fewer pins, the hardware implementation is simple, the expandability is strong, and the method is suitable for communication among multiple Integrated circuits in a system.
The signal bridging unit 22 is further configured to generate corresponding Extended Display Identification Data (EDID) information data according to the resolution information data, the refresh rate information data, the initialization code information data, and the screen power parameter information data of the screen module 3.
Specifically, after the micro control unit 21 obtains the resolution information data, the refresh rate information data, the initialization code information data, and the screen power parameter information data, the internal register of the signal bridging unit 22 is configured through the I2C communication protocol, so that the signal bridging unit 22 generates the corresponding EDID information.
The EDID information data is a standard data format for identifying a display, and contains parameter information about the display, including vendor information, maximum image size, color settings, vendor presets, limits on frequency range, and character strings of display name and serial number, etc.
The signal bridging unit 22 is in communication connection with the computer terminal through an HDMI cable, and when the signal bridging unit 22 generates EDID information data, the display card device of the computer terminal 1 can automatically read the EDID information data and automatically output HDMI signal data according to the EDID information data.
The power supply unit 23 is connected to the power supply input, and the power supply unit 23 is configured to input a corresponding voltage signal to the signal bridging unit 22 according to the power parameter information of the screen module 3. While the HDMI signal data is output from the computer 1, the micro control unit 21 configures the power supply unit 23 according to the power supply parameter information acquired from the computer 1, so that the power supply unit 23 inputs a corresponding voltage signal including a voltage magnitude and a voltage switch to the signal bridging unit 22, thereby controlling a power-on timing sequence and a power-off timing sequence required for powering on the screen module 3.
The power supply unit 23 further includes a switch for power input and an apparatus operating state indicator lamp so as to control the display apparatus having a signal conversion function.
Further, the signal bridging unit 22 includes a signal bridging chip 221 and a screen end connector 222, the signal bridging chip 221 is an RK628 chip, and the screen end connector 222 is connected to the screen module 3, and inputs the signal data sent by the bridging chip and the voltage output by the power supply unit 23. The power supply unit 23 is directly connected to the screen-side connector 222, to which a voltage signal is input.
The utility model discloses in other embodiments, also can adopt other to have the signal bridging chip that directly converts the HDMI signal into MIPI signal function.
The signal bridge chip 221 is configured to convert the screen module 3 initialization code information data into an MIPI LP (Low Power) signal and transmit the MIPI LP (Low Power) signal to the screen module 3. After the screen module 3 is powered on, the micro control unit 21 configures the signal bridge chip 221 to output the MIPI LP signal, and the signal bridge chip 221 converts the initialization information into the MIPI LP signal and sends the MIPI LP signal to the screen module 3 through the screen end connector 222, thereby completing the initialization of the screen module 3.
The signal bridge chip 221 is further configured to receive the HDMI signal and convert the HDMI signal into an MIPI HS (High Speed) signal for output, so as to drive the screen module 3 to light up. After the initialization of the screen module 3 is completed, the micro control unit 21 configures the signal bridging chip 221 to output the MIPI HS signal, and the signal bridging chip 221 automatically converts the HDMI signal input from the computer terminal 1 into the MIPI HS signal and sends the MIPI HS signal to the screen module 3 through the screen end connector 222, thereby completing the lighting operation of the screen module 3.
The following describes an operation method of the display device with signal conversion function in this embodiment by a specific workflow:
s1: the computer terminal 1 sends the information such as the resolution information data, the refresh rate information data, the initialization code information data, the power parameter of the screen module 3 to the micro control unit 21 through the UART serial port according to the parameter information of the screen module 3.
S2: the micro control unit 21 configures the internal register of the signal bridging unit 22 according to the resolution information data, the refresh rate information data, the initialization code information data, the power parameter, and other information of the screen module 3, so that the internal register generates the EDID information data of the screen module 3.
S3: the computer terminal 1 automatically reads the EDID information data generated by the signal bridging unit 22 and outputs the corresponding HDMI signal data.
S4: the micro control unit 21 configures the power supply unit 23 according to the power supply parameters obtained from the computer terminal 1, so that the power supply unit outputs corresponding voltage to control the power-on of the screen module 3.
S5: the micro control unit 21 configures the signal bridging chip 221 to output the MIPI LP signal, and the signal bridging chip 221 converts the initialization information into the MIPI LP signal and transmits the MIPI LP signal to the screen module 3 through the screen end connector 222, thereby completing the initialization of the screen module 3.
S6: the micro control unit 21 configures the signal bridging chip 221 to output an MIPI HS signal, and the signal bridging chip 221 automatically converts the HDMI signal input from the calculator end into the MIPI HS signal and sends the MIPI HS signal to the screen module 3 through the screen end connector 222, thereby completing the lighting operation of the screen module 3.
To sum up, the utility model provides a display device with signal conversion function can be according to the HDMI signal that the parameter information automatic output of screen module corresponds to through the automatic work of lighting to the screen module of MIPI signal completion with HDMI signal conversion of signal conversion module. The signal conversion module is integrated in a circuit board, so that the structure is simple, and complex installation cost is not needed. Second, the display device transmits the HDMI signal with strong anti-interference capability directly through the computer terminal, and can stably transmit images and video signals in complex environments such as automation. Thirdly, compared with the traditional image generator equipment, the equipment does not need special upper computer software and script files for writing the screen module, only needs to transmit resolution information data, refresh rate information data, initialization information, power parameters and other data of the screen module, can finish the lighting work of the screen module, and is simple to operate. Fourthly, the development cycle of the device is short, the traditional image generator device needs special FPGA, ARM, a power supply and the like, developers spend a long time developing, the device is only provided with a simple micro control unit, and the developers only need to compile corresponding serial communication and I2C communication.
It should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be appreciated by those skilled in the art that the specification as a whole may be appropriately combined to form other embodiments as will be apparent to those skilled in the art.
The above list of details is only for the feasible embodiments of the present invention, and is not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A display device having a signal conversion function, comprising: the signal conversion module is respectively in communication connection with the computer terminal and the screen module;
the signal conversion module comprises a micro control unit, a signal bridging unit and a power supply unit;
the micro control unit is configured to receive screen module parameter information data transmitted from the computer end, and the signal bridging unit generates EDID information data of the screen module according to the screen module parameter information data;
the computer end is in communication connection with the micro control unit and the signal bridging unit, and is configured to receive the EDID information data and output an HDMI signal generated based on the EDID information data to the signal conversion module;
the power supply unit is configured to output a corresponding voltage to the screen module;
the signal bridging unit is configured to receive the HDMI signal, convert the HDMI signal into an MIPI signal, and drive the screen module to light up.
2. The display device with signal conversion function according to claim 1, wherein the micro control unit is connected to the computer terminal via a UART serial port communication.
3. The display device with signal conversion function according to claim 2, wherein the computer end comprises a memory, the memory stores the screen module parameter information data, and the computer end is further configured to send the screen module parameter information data to the micro control unit through the UART serial port.
4. The display device with signal conversion function according to claim 3, wherein the memory holds resolution information data, refresh rate information data, initialization code information data, and screen power parameter information data of the screen module.
5. The display device with signal conversion function according to claim 4, wherein the bridge unit is further configured to generate the corresponding EDID information data according to the resolution information data, the initialization code information data and the screen power parameter information data of the screen module.
6. The display device with the signal conversion function according to claim 4, wherein the signal bridging unit is in communication connection with the computer terminal through an HDMI cable, and the signal bridging unit is in communication connection with the micro control unit through an I2C communication protocol.
7. The display device with the signal conversion function according to claim 6, wherein the signal bridge unit comprises a signal bridge chip and a screen end connector, the signal bridge chip is an RK628 chip, and the screen end connector is connected to the screen module and inputs the signal data sent by the bridge chip and the voltage output by the power supply unit.
8. The display device with the signal conversion function according to claim 7, wherein the signal bridge chip is configured to convert the screen module initialization code information data into an MIPI LP signal and send the MIPI LP signal to the screen module.
9. The display device with the signal conversion function according to claim 8, wherein the signal bridge chip is further configured to receive the HDMI signal and convert the HDMI signal into an MIPI HS signal for output, so as to drive the screen module to light up.
10. The display device with the signal conversion function according to claim 7, wherein the power supply unit is configured to input a corresponding voltage signal to the screen connector according to the screen module power parameter information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221764016.6U CN217740141U (en) | 2022-07-07 | 2022-07-07 | Display device with signal conversion function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221764016.6U CN217740141U (en) | 2022-07-07 | 2022-07-07 | Display device with signal conversion function |
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| Publication Number | Publication Date |
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| CN217740141U true CN217740141U (en) | 2022-11-04 |
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| CN202221764016.6U Active CN217740141U (en) | 2022-07-07 | 2022-07-07 | Display device with signal conversion function |
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