Equipment for controlling double screens through single processor

Abstract

The utility model discloses equipment for controlling double screens by a single processor. The equipment comprises a display screen shell; a duplex display screen module; the display screen central control mainboard module is fixed on the duplex display screen module, and the display screen central control mainboard module is electrically connected with the duplex display screen module; the display screen instrument mainboard module is fixed on the duplex display screen module, and the display screen instrument mainboard module is electrically connected with the duplex display screen module; the display screen central control mainboard module is electrically connected with the display screen instrument mainboard module. According to the device for controlling the double screens through the single processor, the device is used in cooperation with the host, the host is connected with the display screen central control mainboard module and the display screen instrument mainboard module through the power wire harness and the HSD wire harness, and the MCU module can control display of the double screens according to enable signals given by the detection host. Therefore, one MCU processor can control the display of the duplex screen at the same time.

Description

Technical Field

[0001] This utility model relates to the field of vehicle display control technology, and in particular to a device that controls dual screens with a single processor. Background Technology

[0002] With the development of technology, automotive displays have become an indispensable part of modern cars. The domestic automotive industry is shifting towards electric and intelligent vehicles, and in-vehicle displays are evolving from simple, small screens to multi-screen interaction, high resolution, large dual-screen or even triple-screen setups. Consumers' demands for the car cabin experience are also gradually increasing, requiring more intelligent vehicle usage scenarios.

[0003] Currently, the mainstream solution for dual-display automotive systems is to have one motherboard controlling one screen, with each motherboard having its own independent MCU processor for control and logic processing.

[0004] The following problems exist with the dual-display automotive system that uses two independent motherboards and MCU control schemes:

[0005] 1. High cost: It requires two motherboards and MCUs, which increases hardware costs; software development, testing and maintenance costs also increase due to the dual system.

[0006] 2. System Complexity: Dual systems increase system complexity and raise the difficulty of development and debugging. Communication between the two motherboards may introduce latency or data inconsistency.

[0007] 3. High power consumption: Dual MCU operation increases power consumption, affecting battery life and heat dissipation.

[0008] 4. Large space occupation: Two motherboards take up more space, which is not conducive to the layout of the vehicle interior.

[0009] 5. Reliability risks: Dual systems increase the probability of failure; a failure of one motherboard may affect the overall functionality.

[0010] 6. Synchronization issues: The two screens may display out of sync, affecting the user experience. Summary of the Invention

[0011] The purpose of this utility model is to adapt to the development requirements of science and technology and provide a device that controls dual screens with a single processor.

[0012] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0013] This utility model provides a device for controlling dual screens with a single processor, including a host computer, and further comprising:

[0014] Display screen casing;

[0015] Dual-display module;

[0016] The central control motherboard module of the display screen is fixed on the dual display screen module, and the central control motherboard module of the display screen is electrically connected to the dual display screen module;

[0017] The display instrument mainboard module is fixed on the dual-display module, and the display instrument mainboard module is electrically connected to the dual-display module;

[0018] The central control mainboard module of the display screen is electrically connected to the mainboard module of the display screen instrument panel.

[0019] In one embodiment of this utility model, the display instrument mainboard module includes:

[0020] Power module;

[0021] The power supply module is electrically connected to the host's 12V power supply, backlight driver module, MCU module, deserialization chip module, and display screen central control motherboard module. The power supply module is communicatively connected to the MCU module.

[0022] In one embodiment of this utility model, the display instrument motherboard module further includes a backlight driving module, which is electrically connected to the power supply module and the dual-display module.

[0023] In one embodiment of this utility model, the display instrument motherboard module further includes an MCU module, which is electrically connected to the power module of the display instrument motherboard module; the MCU module is communicatively connected to the power module, backlight driver module, and deserialization chip module of the display instrument motherboard module; it is communicatively connected to the positive and negative voltage power modules and deserialization chip module of the display central control motherboard module; and it is communicatively connected to the dual-display module.

[0024] In one embodiment of this utility model, the display instrument motherboard module further includes a deserialization chip module, which is electrically connected to the power module of the display instrument motherboard module and the dual-display module; the deserialization chip module is communicatively connected to the MCU module of the display instrument motherboard module.

[0025] In one embodiment of this utility model, the display screen central control motherboard module includes:

[0026] Power module;

[0027] The power supply module is electrically connected to the 3.3V power supply of the display instrument mainboard module.

[0028] In one embodiment of this utility model, the display screen central control motherboard module further includes a display screen positive and negative voltage power supply module. The display screen positive and negative voltage power supply module is electrically connected to the power supply module of the display screen instrument motherboard module and the dual display screen module. The display screen positive and negative voltage power supply module is communicatively connected to the MCU module of the display screen instrument motherboard module.

[0029] In one embodiment of this utility model, the display screen central control motherboard module further includes a deserialization chip module, which is electrically connected to the power module of the display screen central control motherboard module and the dual-display screen module; the deserialization chip module is communicatively connected to the MCU module of the display screen instrument motherboard module.

[0030] In summary, this utility model provides a device for controlling dual screens with a single processor. This device is used in conjunction with a host computer. The host computer is connected to the central control motherboard module and the instrument motherboard module of the display screen via power harnesses and HSD harnesses. The MCU module can control the display of the dual screens according to the enable signal given by the host computer, realizing the simultaneous control of the display of the dual screens by a single MCU processor. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0032] Figure 1 This is an overall system block diagram of this utility model;

[0033] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 3 This is the circuit diagram of the power module of the central control motherboard module of the display screen of this utility model;

[0035] Figure 4 This is a circuit diagram of the positive and negative voltage power supply module of the display screen central control motherboard module of this utility model;

[0036] Figure 5 This is a circuit diagram of the deserialization chip module of the central control motherboard module of the display screen of this utility model;

[0037] Figure 6 This is the power module circuit diagram of the main board module of the display instrument of this utility model;

[0038] Figure 7 This is the circuit diagram of the MCU module of the display instrument motherboard module of this utility model;

[0039] Figure 8This is a circuit diagram of the reset circuit, crystal oscillator circuit, wake-up and sleep circuit, and power-on status detection circuit in the MCU module of the display instrument motherboard module of this utility model.

[0040] Figure 9 This is a circuit diagram of the backlight drive module of the display instrument motherboard module of this utility model for the backlight drive of the instrument.

[0041] Figure 10 This is a circuit diagram of the backlight drive module of the display instrument motherboard module of this utility model for the central control system.

[0042] Figure 11 This is a circuit diagram of the deserialization chip module of the display instrument motherboard module of this utility model;

[0043] The numbers in the diagram are explained as follows: 1 - Dual-screen display module, 2 - Display central control mainboard module, 3 - Display instrument mainboard module. Detailed Implementation

[0044] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0045] Please see Figure 1 and Figure 2 This utility model provides a device for controlling dual screens with a single processor. This device requires a host computer. The host computer is connected to the display screen central control motherboard module and the display screen instrument motherboard module via power cables and HSD cables. The MCU module can control the display of the dual screens based on the enable signal given by the host computer. Specifically, the device includes a display screen housing frame, a dual display screen module 1, a display screen central control motherboard module 2, and a display screen instrument motherboard module 3. The display screen central control motherboard module 2 and the display screen instrument motherboard module 3 are fixed to the dual display screen module 1. The display screen central control motherboard module 2 includes a power supply module, a display screen positive and negative voltage power supply module, and a deserialization chip module. The circuit diagram of the power supply module is shown below. Figure 3 As shown, this power module uses the JWQ7821 LDO chip from Jiewatt, with an input voltage of 3.3V and an output voltage of 1.8V. This power module supplies power to the deserialization chip module. The circuit diagram of the positive and negative voltage power modules for the display screen is shown below. Figure 4As shown, this power module uses the Richtek RTQ6749 chip, a dedicated automotive TFT-LCD integrated power module. It has an input voltage of 3.3V and can provide up to 5 outputs. The chip's communication and control pins are electrically connected to the MCU module via connectors. This power module supplies power to the central control screen of a dual-screen display module. The circuit diagram of the deserialization chip module is shown below. Figure 5 As shown, this module uses the Maxim Integrated MAX96752 chip. The serialization chip on the host side converts multiple parallel data streams into a single serial data stream. This data is transmitted to the display screen's central control motherboard module via an HSD line. The deserialization chip on the display screen's central control motherboard module then restores the single serial data stream into multiple parallel data streams usable by the display screen. The pins of this chip that need to communicate and control the MCU module are electrically connected to the MCU module via connectors.

[0046] In one embodiment of this utility model, the display instrument mainboard module 3 includes a power supply module, an MCU module, a backlight driver module, and a deserialization chip module. The circuit diagram of the power supply module is shown below. Figure 6 As shown, the mainboard module of the display instrument consists of three parts.

[0047] The first part is a single-stage DC-DC converter. This power module uses a Silergy SA24403 DC-DC chip, with an input voltage of 12V and an output voltage of 3.3V. The control enable pin of this chip is electrically connected to the MCU module. In addition to the 3.3V power supply of the MCU module, all other 3.3V power supplies for this display device are powered by this DC-DC converter.

[0048] The second part is the first-stage LDO. This power module uses the ROHM BD433M5FP LDO chip, with an input voltage of 12V and an output voltage of 3.3V. This power module supplies power to the MCU module.

[0049] The third part is a two-stage LDO. This power module uses the JWQ7821 LDO chip from JWAT, with an input voltage of 3.3V and an output voltage of 1.8V. This power module supplies power to the deserialization chip module.

[0050] Please see Figure 1 and Figure 2 The mainboard module 3 of the display instrument also includes an MCU module, the circuit diagram of which is shown below. Figure 7 and Figure 8As shown, the MCU uses the YTM32B1LE05H0VLHT chip, with a power supply voltage of 3.3V. The MCU module circuit includes a reset circuit, a 24MHz crystal oscillator circuit, a wake-up and sleep circuit: host enable control (at least one MCU module must be enabled for it to operate), and a power-on status detection circuit: detecting the host enable pin and controlling the dual-screen display based on this signal status. All communication and control pins required by this device are electrically connected to the MCU module.

[0051] The mainboard module 3 of the display screen also includes two backlight driver modules, the circuit diagram of which is shown below. Figure 9 and Figure 10 As shown, the backlight driver uses MPS's MPQ3367 chip, which has up to 6 LED driver outputs and a supply voltage of 12V. The chip's communication and control pins are electrically connected to the MCU module. The LED driver outputs are electrically connected to the dual-display module.

[0052] The mainboard module 3 of the display instrument also includes a serialization chip module, the circuit diagram of which is shown below. Figure 11 As shown, this module uses the Maxim Integrated MAX96752 chip. The serialization chip on the host side converts multiple parallel data streams into a single serial data stream. This data is transmitted to the display screen's central control motherboard module via the HSD line. The deserialization chip on the display screen's central control motherboard module then restores the single serial data stream into multiple parallel data streams usable by the display screen. The communication and control pins of this chip are electrically connected to the MCU module.

[0053] In summary, this utility model provides a testing device for vehicle-mounted displays. This device needs to be used with a host computer. The host computer is connected to the central control motherboard module and the instrument panel motherboard module of the display screen through power harnesses and HSD harnesses. The MCU module can control the display of the dual screens according to the enable signal given by the testing host computer, so that one MCU processor can control the display of the dual screens simultaneously.

[0054] This invention provides a testing device for in-vehicle displays, which has the following advantages: low cost: a single motherboard and MCU can control the display of dual screens simultaneously, reducing hardware costs; simple system: a single system reduces system complexity and development and debugging difficulty; low power consumption: single MCU operation reduces power consumption, improving battery life and heat dissipation; low space occupation: a single motherboard occupies less space, which is beneficial for in-vehicle layout; reduced reliability risk: a single system reduces the probability of failure; more stable synchronization: simultaneous display of two screens provides a better user experience.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for controlling dual screens with a single processor, comprising a host computer, characterized in that, Also includes: Display screen casing; Dual-display module; The central control motherboard module of the display screen is fixed on the dual display screen module, and the central control motherboard module of the display screen is electrically connected to the dual display screen module; The display instrument mainboard module is fixed on the dual-display module, and the display instrument mainboard module is electrically connected to the dual-display module; The central control mainboard module of the display screen is electrically connected to the mainboard module of the display screen instrument panel.

2. The device for controlling dual screens with a single processor according to claim 1, characterized in that, The display instrument mainboard module includes: Power module; The power supply module is electrically connected to the host's 12V power supply, backlight driver module, MCU module, deserialization chip module, and display screen central control motherboard module. The power supply module is communicatively connected to the MCU module.

3. The device for controlling dual screens with a single processor according to claim 2, characterized in that, The display instrument motherboard module also includes a backlight driver module, which is electrically connected to the power module and the dual-display module.

4. The device for controlling dual screens with a single processor according to claim 3, characterized in that, The display instrument motherboard module also includes an MCU module, which is electrically connected to the power module of the display instrument motherboard module; the MCU module is communicatively connected to the power module, backlight driver module, and deserialization chip module of the display instrument motherboard module. The communication is connected to the positive and negative voltage power supply module and the deserialization chip module of the central control motherboard module of the display screen; the communication is also connected to the dual display screen module.

5. The device for controlling dual screens with a single processor according to claim 4, characterized in that, The display instrument motherboard module also includes a deserialization chip module, which is electrically connected to the power module of the display instrument motherboard module and the dual-display module; the deserialization chip module is communicatively connected to the MCU module of the display instrument motherboard module.

6. The device for controlling dual screens with a single processor according to claim 1, characterized in that, The central control motherboard module for the display screen includes: Power module; The power supply module is electrically connected to the 3.3V power supply of the display instrument mainboard module.

7. The device for controlling dual screens with a single processor according to claim 6, characterized in that, The central control motherboard module of the display screen also includes a positive and negative voltage power supply module for the display screen. The positive and negative voltage power supply module for the display screen is electrically connected to the power supply module of the instrument motherboard module of the display screen and the dual display screen module. The positive and negative voltage power supply module for the display screen is communicatively connected to the MCU module of the instrument motherboard module of the display screen.

8. The device for controlling dual screens with a single processor according to claim 7, characterized in that, The central control motherboard module of the display screen also includes a deserialization chip module, which is electrically connected to the power module of the central control motherboard module of the display screen and the dual display screen module; the deserialization chip module is communicatively connected to the MCU module of the instrument motherboard module of the display screen.

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