Signal conversion display module

Abstract

The utility model discloses a signal conversion display module which comprises a driving circuit board and a display screen, and the driving circuit board is provided with an input interface, a voltage conversion module, a signal conversion module, a microprocessor and an output interface. Firstly, parameter information of a preset display screen is transmitted to the microprocessor through the input interface, then the input interface is connected with an external power supply and an MIPI signal, the signal conversion module converts the MIPI signal into an LVDS signal, and the parameter information of the preset display screen is issued to the signal conversion module by means of the microprocessor. And the signal conversion module transmits the parameter information of the display screen and the LVDS signal to the output interface, and finally, an image is displayed through the display screen connected with the output interface, so that the compatibility of driving the display screen of the LVDS signal by the MIPI signal is realized.

Description

Technical Field

[0001] This utility model relates to the field of vehicle screen technology, and in particular to a signal conversion display module. Background Technology

[0002] In current in-vehicle systems, the displays used are primarily in landscape mode. In landscape display applications, LVDS (Low Voltage Differential Signaling) drive signals are conventionally used to transmit and display image data.

[0003] However, the vehicle-mounted driver SOC (System-on-a-Chip) outputs a MIPI (Mobile Industry Processor Interface) signal, which cannot properly drive the existing LVDS display screen, thus making the SOC chip's MIPI signal incompatible with the LVDS display screen. Utility Model Content

[0004] To address the shortcomings of existing technologies, a signal conversion and display module is provided, aiming to solve the technical problems mentioned in the background section.

[0005] A signal conversion and display module includes a driver circuit board and a display screen. The driver circuit board is provided with an input interface, a voltage conversion module, a signal conversion module, a microprocessor, and an output interface.

[0006] An external power supply is electrically connected to the voltage conversion module and the microprocessor through the input interface to provide operating power to the voltage conversion module and the microprocessor. The voltage conversion module adjusts the external power supply to provide operating power to the signal conversion module and the output interface. The input interface is communicatively connected to the microprocessor to transmit the display screen's parameter information to the microprocessor for the signal conversion module to use. The input interface is also communicatively connected to the signal conversion module to transmit MIPI signals to the signal conversion module. The signal conversion module receives the MIPI signals, converts them into LVDS signals, and transmits the display screen's parameter information to the output interface. The output interface outputs the LVDS signals and the display screen's parameter information to the display screen, and the display screen displays an image based on the LVDS signals.

[0007] The beneficial effects of this utility model are:

[0008] First, the preset display parameters are transmitted to the microprocessor via the input interface. Then, the input interface is connected to an external power supply and a MIPI signal. Simultaneously, the output voltage of the voltage conversion module is used to ensure the normal operation of the signal conversion module and the microprocessor. The signal conversion module converts the MIPI signal into an LVDS signal. With the help of the microprocessor, the preset display parameters are sent to the signal conversion module. The signal conversion module then transmits the display parameters and the LVDS signal to the output interface. Finally, the image is displayed on the display screen connected to the output interface, thus achieving compatibility between MIPI signals driving LVDS signals on the display screen.

[0009] Furthermore, the input interface includes a terminal CN2, the microprocessor includes a chip U7, pins 20 and 21 of the terminal CN2 are connected to pins 18 and 8 of the chip U7 respectively, and pin 44 of the terminal CN2 is connected to pin 9 of the chip U7.

[0010] Furthermore, the voltage conversion module includes a pulse frequency modulation circuit, a voltage conversion circuit, and a voltage multiplier circuit. Pin 43 of terminal CN2 is connected to the input terminal of the pulse frequency modulation circuit. The output terminal of the pulse frequency modulation circuit is connected to the input terminal of the voltage multiplier circuit. The output terminal of the voltage multiplier circuit is connected to the output interface. Pin 44 of terminal CN2 is connected to the input terminal of the voltage conversion circuit. The output terminal of the voltage conversion circuit is connected to pins 1, 24, 37, and 64 of chip U1.

[0011] Furthermore, the pulse frequency modulation circuit includes a pulse frequency modulation A-path circuit and a pulse frequency modulation B-path circuit, and the voltage multiplier circuit includes a voltage multiplier A-path circuit and a voltage multiplier B-path circuit. The output terminal of the pulse frequency modulation A-path circuit is connected to the input terminal of the voltage multiplier A-path circuit, and the output terminal of the pulse frequency modulation B-path circuit is connected to the input terminal of the voltage multiplier B-path circuit. The output terminals of the voltage multiplier A-path circuit and the voltage multiplier B-path circuit are respectively connected to the output interface.

[0012] Furthermore, the voltage multiplier circuit also includes a pulse calling module, which is connected to the output interface.

[0013] Further, the signal conversion module includes a chip U1. Pins 23, 24, 26, 27, 29, 30, 32, 33, 35, and 36 of terminal CN2 are connected to pins 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, and 52 of chip U1, respectively. Pins 12 and 11 of chip U7 are connected to pins 51 and 50 of chip U1, respectively. Pins 25, 26, 29, 30, 31, 32, 33, 34, 38, 39, 42, 43, 44, 45, 46, and 47 of chip U1 are connected to the output interface, respectively.

[0014] Furthermore, the chip U1 also includes a 35-pin, which is used to call a first address or a second address. The first address and the second address are used to store parameter information of a preset display screen.

[0015] Furthermore, the driving circuit board also includes a differential resistor module, which is located adjacent to the output interface. The differential resistor module is connected to both the signal conversion module and the output interface. Attached Figure Description

[0016] Figure 1 This is a system block diagram of the signal conversion and display module of this utility model;

[0017] Figure 2 This is a circuit diagram of the input interface of this utility model;

[0018] Figure 3 This is a circuit diagram of the voltage conversion module of this utility model;

[0019] Figure 4 This is a circuit diagram of the signal conversion module of this utility model;

[0020] Figure 5 This is a circuit diagram of the microprocessor of this utility model;

[0021] Figure 6 This is a circuit diagram of the differential resistor module of this utility model.

[0022] In the diagram: 1. Driver circuit board; 11. Input interface; 12. Voltage conversion module; 121. Pulse frequency modulation circuit; 1211. Pulse frequency modulation circuit A; 1212. Pulse frequency modulation circuit B; 122. Voltage conversion circuit; 123. Voltage multiplier circuit; 1231. Voltage multiplier circuit A; 1232. Voltage multiplier circuit B; 1233. Pulse calling module; 13. Signal conversion module; 14. Microprocessor; 15. Differential resistor module; 16. Output interface; 2. Display screen. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Furthermore, the various embodiments of the invention, the features within those embodiments, and the features of the embodiments may be freely combined without obvious conflict or contradiction.

[0026] A signal conversion display module, such as Figures 1 to 6 As shown, it includes a driver circuit board 1 and a display screen 2. The driver circuit board 1 is provided with an input interface 11, a voltage conversion module 12, a signal conversion module 13, a microprocessor 14, and an output interface 16.

[0027] The power supply line of input interface 11 is connected to voltage conversion module 12 and microprocessor 14 respectively. The signal power supply line of input interface 11 is connected to signal conversion module 13 and microprocessor 14 respectively. The signal power supply line of signal conversion module 13 is connected to microprocessor 14 and output interface 16 respectively. The power supply line of voltage conversion module 12 is connected to signal conversion module 13 and output interface 16. Output interface 16 is connected to display screen 2.

[0028] Input interface 11 is used to introduce external power and MIPI signal into drive circuit board 1. Voltage conversion module 12 is used to adjust the output voltage of input interface 11. Signal conversion module 13 converts MIPI signal into LVDS signal. Microprocessor 14 is used to store preset parameter information of display screen 2 and provide it to signal conversion module 13. Output interface 16 is used to receive LVDS signal and output it to display screen 2. Display screen 2 is used to display image.

[0029] Understandably, this invention first transmits the parameter information of multiple preset display screens 2 to the microprocessor 14 for storage via the input interface 11. Then, the input interface 11 is connected to an external power supply and MIPI signal. Simultaneously, the output voltage of the voltage conversion module 12 is used to meet the power supply needs of multiple modules such as the signal conversion module 13 and the microprocessor 14, simplifying the power management path and improving stability. The signal conversion module 13 converts the MIPI signal into an LVDS signal. With the help of the microprocessor 14, the parameter information of the preset display screens 2 is communicated with the signal conversion module 13. The microprocessor 14 sends the parameter information of the display screens 2, achieving flexibility to adapt to different vehicle screens. The signal conversion module 13 transmits the parameter information of the display screens 2 and the LVDS signal to the output interface 16. Finally, the display screen 2 connected to the output interface 16 displays the image, thereby realizing the function of the display screen 2 driving the LVDS signal with the MIPI signal. Signal conversion and display can be completed without debugging, greatly satisfying different display needs.

[0030] Specifically, input interface 11 includes terminal CN2, and microprocessor 14 includes chip U7. Pins 20 and 21 of terminal CN2 are connected to pins 18 and 8 of chip U7, respectively, and pin 44 of terminal CN2 is connected to pin 9 of chip U7. Power is supplied to microprocessor 14 via the connection between pin 44 of terminal CN2 and pin 9 of chip U7. Parameter information from preset display screens 2 is imported into microprocessor 14 for storage via the connections between pins 20 and 21 of terminal CN2 and pins 18 and 8 of chip U7, respectively. Pins 12 and 11 of chip U7 are connected to pins 51 and 50 of chip U1, respectively, to transmit MIPI signals to signal conversion module 13. This configuration introduces external power, MIPI signals, and parameter information from multiple preset display screens 2 onto driver circuit board 1.

[0031] Specifically, the voltage conversion module 12 includes a pulse frequency modulation circuit 121, a voltage conversion circuit 122, and a voltage multiplier circuit 123. Pin 43 of terminal CN2 is connected to the input terminal of the pulse frequency modulation circuit 121, and pin 44 of terminal CN2 is connected to the input terminal of the voltage conversion circuit 122. The output terminals of the voltage conversion circuit 122 are connected to pins 1, 24, 37, and 64 of chip U1, respectively. The output terminal of the pulse frequency modulation circuit 121 is connected to the input terminal of the voltage multiplier circuit 123, and the output terminal of the voltage multiplier circuit 123 is connected to the output interface 16. By connecting pin 44 of terminal CN2 to the input terminal of the voltage conversion circuit 122, and connecting the output terminal of the voltage conversion circuit 122 to pins 1, 24, 37, and 64 of chip U1, the input voltage at pin 44 of terminal CN2 is stepped down and adjusted, and then output to pins 1, 24, 37, and 64 of chip U1 through the output terminal of the voltage conversion circuit 122 to meet the operating voltage requirements of the drive signal conversion module 13.

[0032] Specifically, the pulse frequency modulation circuit 121 includes a pulse frequency modulation A-path circuit 1211 and a pulse frequency modulation B-path circuit 1212, the voltage multiplier circuit 123 includes a voltage multiplier A-path circuit 1231 and a voltage multiplier B-path circuit 1232, and a pulse calling module 1233. The output terminal of the pulse frequency modulation A-path circuit 1211 is connected to the input terminal of the voltage multiplier A-path circuit 1231, the output terminal of the pulse frequency modulation B-path circuit 1212 is connected to the input terminal of the voltage multiplier B-path circuit 1232, the output terminals of the voltage multiplier A-path circuit 1231 and the voltage multiplier B-path circuit 1232 are respectively connected to the output interface 16, and the pulse calling module 1233 is connected to the output interface 16. By connecting the corresponding circuits of the pulse frequency modulation circuit 121 and the voltage multiplier circuit 123, the input voltage of pin 43 of terminal CN2 is boosted and adjusted, and the output terminals of voltage multiplier circuit A 1231 and voltage multiplier circuit B 1232 are respectively connected to the output interface 16 to meet the driving voltage requirements of display screen 2; while the pulse call module 1233 is used to meet the refresh frequency requirements of display screen 2.

[0033] Specifically, the signal conversion module 13 includes a chip U1. Pins 1, 24, 37, and 64 of chip U1 are connected to the output terminal of voltage conversion circuit 122, respectively. Pins 23, 24, 26, 27, 29, 30, 32, 33, 35, and 36 of terminal CN2 are connected to pins 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, and 52 of chip U1, respectively. Pins 25, 26, 29, 30, 31, 32, 33, 34, 38, 39, 42, 43, 44, 45, 46, and 47 of chip U1 are connected to output interface 16, respectively. The signal conversion module 13 also includes an address control terminal 135, which is used to call a first address or a second address. Pins 1, 24, 37, and 64 of chip U1 are connected to the output of voltage conversion circuit 122 to provide operating voltage for signal conversion module 13. Pins 12 and 11 of chip U7 are connected to pins 51 and 50 of chip U1, respectively, to transmit MIPI signals to signal conversion module 13. Utilizing the address control terminal 135's ability to call either a first or second address, when an address conflict occurs, another address can be used as a backup address for storing preset display screen 2 parameter information. This is achieved through pins 23, 24, 26, 27, 29, and 30 of terminal CN2. Pins 32, 33, 35, and 36 are connected to pins 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, and 52 of chip U1, respectively. Pins 25, 26, 29, 30, 31, 32, 33, 34, 38, 39, 42, 43, 44, 45, 46, and 47 of chip U1 are connected to output interface 16, respectively. Thus, without separate debugging, the MIPI signal can be converted into an LVDS signal and transmitted to output interface 16 to drive the corresponding display screen 2 for display.

[0034] Specifically, the driver circuit board 1 also includes a differential resistor module 15, which is located adjacent to the output interface 16. The differential resistor module 15 is connected to the signal conversion module 13 and the output interface 16 respectively. By transmitting two inverted signals, common-mode noise is effectively canceled, the anti-interference capability is improved, and the asymmetry introduced by the grounding via is avoided. The differential resistor module 15 significantly improves the signal-to-noise ratio and reliability of the display screen 2.

[0035] In this invention, the parameter information of the preset display screen 2 is first transmitted to the microprocessor 14 through the input interface 11. Then, the input interface 11 is connected to an external power supply and a MIPI signal. At the same time, the output voltage of the voltage conversion module 12 is used to ensure the normal operation of the signal conversion module 13 and the microprocessor 14. The signal conversion module 13 converts the MIPI signal into an LVDS signal. With the help of the microprocessor 14, the parameter information of the preset display screen 2 is sent to the signal conversion module 13. The signal conversion module 13 transmits the parameter information of the display screen 2 and the LVDS signal to the output interface 16. Finally, the display screen 2 connected to the output interface 16 displays the image, thereby realizing the function of the display screen 2 that drives the LVDS signal with the MIPI signal.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The embodiments described above are merely illustrative of the implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A signal conversion display module, characterized by: It includes a driver circuit board and a display screen. The driver circuit board is equipped with an input interface, a voltage conversion module, a signal conversion module, a microprocessor, and an output interface. An external power supply is electrically connected to the voltage conversion module and the microprocessor through the input interface to provide operating power to the voltage conversion module and the microprocessor. The voltage conversion module adjusts the external power supply to provide operating power to the signal conversion module and the output interface. The input interface is communicatively connected to the microprocessor to transmit the display screen's parameter information to the microprocessor for the signal conversion module to use. The input interface is also communicatively connected to the signal conversion module to transmit MIPI signals to the signal conversion module. The signal conversion module receives the MIPI signals, converts them into LVDS signals, and transmits the display screen's parameter information to the output interface. The output interface outputs the LVDS signals and the display screen's parameter information to the display screen, and the display screen displays an image based on the LVDS signals. 2.The signal conversion display module according to claim 1, characterized in that: The input interface includes a terminal CN2, and the microprocessor includes a chip U7. Pins 20 and 21 of the terminal CN2 are connected to pins 18 and 8 of the chip U7, respectively, and pin 44 of the terminal CN2 is connected to pin 9 of the chip U7. 3.The signal conversion display module of claim 2, wherein: The voltage conversion module includes a pulse frequency modulation circuit, a voltage conversion circuit, and a voltage multiplier circuit. Pin 43 of terminal CN2 is connected to the input terminal of the pulse frequency modulation circuit. The output terminal of the pulse frequency modulation circuit is connected to the input terminal of the voltage multiplier circuit. The output terminal of the voltage multiplier circuit is connected to the output interface. Pin 44 of terminal CN2 is connected to the input terminal of the voltage conversion circuit. The output terminal of the voltage conversion circuit is connected to pins 1, 24, 37, and 64 of chip U1.

4. The signal conversion display module of claim 3, wherein: The pulse frequency modulation circuit includes a pulse frequency modulation A-path circuit and a pulse frequency modulation B-path circuit. The voltage multiplier circuit includes a voltage multiplier A-path circuit and a voltage multiplier B-path circuit. The output terminal of the pulse frequency modulation A-path circuit is connected to the input terminal of the voltage multiplier A-path circuit. The output terminal of the pulse frequency modulation B-path circuit is connected to the input terminal of the voltage multiplier B-path circuit. The output terminals of the voltage multiplier A-path circuit and the voltage multiplier B-path circuit are respectively connected to the output interface.

5. The signal conversion display module of claim 4, wherein: The voltage multiplier circuit also includes a pulse calling module, which is connected to the output interface. 6.The signal conversion display module according to claim 3, characterized in that: The signal conversion module comprises a chip U1, the 23th pin, the 24th pin, the 26th pin, the 27th pin, the 29th pin, the 30th pin, the 32th pin, the 33th pin, the 35th pin and the 36th pin of the terminal CN2 are connected with the 62th pin, the 61th pin, the 60th pin, the 59th pin, the 58th pin, the 57th pin, the 56th pin, the 55th pin, the 54th pin, the 53th pin and the 52th pin of the chip U1 respectively, the 12th pin and the 11th pin of the chip U7 are connected with the 51th pin and the 50th pin of the chip U1 respectively, the 25th pin, the 26th pin, the 29th pin, the 30th pin, the 31th pin, the 32th pin, the 33th pin, the 34th pin, the 38th pin, the 39th pin, the 42th pin, the 43th pin, the 44th pin, the 45th pin, the 46th pin and the 47th pin of the chip U1 are connected with the output interface respectively. 7.The signal conversion display module of claim 6, wherein: The chip U1 further comprises a 35th pin, the 35th pin of the chip U1 is used for calling a first address or a second address. 8.The signal conversion display module according to claim 1, characterized in that: The driving circuit board further comprises a differential resistance module, and the differential resistance module is arranged adjacent to the output interface and connected with the signal conversion module and the output interface respectively.

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