Interactive display method for automobile combination instrument and vehicle-mounted infotainment host

Abstract

In order to realize the development of 3D dynamic effect display function of low-cost instrument cluster, an interactive display method of automobile instrument cluster and in-vehicle infotainment host is designed. Through the combination of instrument cluster mainboard and in-vehicle infotainment host, the instrument can display the dynamic effect logic driven by the 3D engine, achieving the display effect of high-platform instrument. The method includes: after being awakened, the instrument cluster mainboard requests to shake hands with the in-vehicle infotainment host; after the handshake between the instrument cluster mainboard and the in-vehicle infotainment host is successful, it is determined whether the ignition gear of the whole vehicle is ON; if the ignition gear of the whole vehicle is ON, the instrument cluster mainboard initiates a video signal call request to the in-vehicle infotainment host; the in-vehicle infotainment host transmits the power-on effect to the instrument cluster mainboard based on the video signal call request; the instrument cluster mainboard controls the instrument TFT to display the power-on effect.

Description

Technical Field

[0001] The invention belongs to an interactive display design application scheme for automobile parts, and specifically relates to an interactive display method for an automobile combination instrument and an in-vehicle infotainment host. Background Art

[0002] As a common means of transportation, cars have always been the development goals of safety, convenience, and intelligence. In order to bring users more convenient and intelligent information display and interactive experience, the functional display of the instrument cluster assembly is cooler and more diverse. At the same time, it needs to correspond to a higher hardware platform support. The general practice is to improve the hardware application platform. The conventional dual-chip solution of single-chip microcomputer + SOC is relatively expensive. There are also solutions (such as a dual-screen display in-vehicle infotainment host, CN201710004568.4) using the in-vehicle infotainment host as the main body, the main control CPU and MCU communicate with the MCU of the instrument through CAN and LVDS, and then the display information is directly transmitted to the LCD display screen through the instrument MCU. This solution is mainly controlled by the central control CPU. The MCU of the instrument makes a simple program call and is integrated at the end of the instrument screen. The LVDS transmission line between it and the main control of the car machine is long, and the transmission is unstable; at the same time, when the main control CPU of the car machine fails, the instrument will also be abnormal, and the display stability risk is relatively high. Summary of the invention

[0003] In order to realize the development of 3D dynamic display function of low-cost instrument cluster, an interactive display method of automobile instrument cluster and vehicle infotainment host was designed. Through the combination of instrument cluster mainboard and vehicle infotainment host, the instrument can display the dynamic effect logic driven by 3D engine, achieving the display effect of high-platform instrument.

[0004] The technical solution of the present invention is:

[0005] The present invention provides an interactive display method for an automobile combination instrument and an in-vehicle infotainment host, comprising:

[0006] After being awakened, the instrument cluster mainboard requests a handshake with the vehicle infotainment host;

[0007] After the combination instrument mainboard and the vehicle infotainment host successfully shake hands, determine whether the vehicle ignition gear is in the ON gear;

[0008] If the vehicle's ignition gear is in the ON position, the instrument cluster mainboard initiates a video signal call request to the vehicle infotainment host;

[0009] The in-vehicle infotainment host transmits the start-up effect to the instrument cluster main board based on the video signal call request;

[0010] The instrument cluster main board controls the instrument TFT to display the startup effect.

[0011] Preferably, the instrument cluster mainboard sends the startup effect to the instrument TFT for display via the LVDS line.

[0012] Preferably, the instrument cluster mainboard requests handshake with the vehicle infotainment host through a CAN signal.

[0013] Preferably, the vehicle infotainment host transmits the start-up effect to the instrument cluster mainboard via MIPI.

[0014] Preferably, when the vehicle-mounted infotainment host is transmitting the startup effect to the instrument cluster main board, if the vehicle-mounted infotainment host fails to complete the transmission of the startup effect within a preset time, the vehicle-mounted infotainment host stops transmitting the startup effect, and the vehicle-mounted infotainment host triggers the instrument cluster main board through a CAN signal to control the instrument TFT to stop displaying the startup effect.

[0015] Preferably, after the vehicle infotainment host completes the transmission of the startup effect, it sends an end signal to the instrument cluster mainboard via a CAN signal, triggering the instrument cluster mainboard to control the instrument TFT to stop displaying the startup effect.

[0016] The beneficial effects of the present invention are:

[0017] The instrument cluster mainboard with integrated MCU is used for the main instrument routine function display control, and the on-board infotainment host on the vehicle side is responsible for the 3D motion effect display part. At the same time, the instrument cluster mainboard is designed inside the entertainment system host, connected to the on-board infotainment host through a higher-speed plug-in mipi communication, and then the display information is transmitted to the instrument display screen through LVDS data.

[0018] The invention has the advantages of simple structure, low design weight, strong practicability and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a structural block diagram of the interactive display system of the automobile combination instrument and the vehicle infotainment host in this embodiment;

[0020] Figure 2 This is a logic flow chart of the interactive display system using the automobile combination instrument and the in-vehicle infotainment host in this embodiment to achieve interactive display. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, this embodiment provides an automobile combination instrument interactive display system, which involves an instrument TFT 1, a combination instrument mainboard 2, and an in-vehicle infotainment host 3.

[0022] The instrument TFT1 is used to receive signals sent by the instrument cluster mainboard 2 through the LVDS line and to display the signals input by the instrument cluster mainboard 2 .

[0023] The instrument cluster mainboard 2 is used for instrument program control and calling, and interacts with the vehicle infotainment host 3 through CAN signals. After receiving the video signal of the vehicle infotainment host 3, the received video signal is transmitted to the instrument TFT1 for display through the LVDS line through program calling.

[0024] After receiving the request signal from the instrument, the in-vehicle infotainment host 3 transmits the startup effect picture of the 3D engine to the instrument cluster motherboard 2 through MIPI. The hardware platform of the instrument cluster motherboard 2 itself is a single-chip SOC main chip, which has conventional graphics processing, program control and other functions, and can realize conventional functional interface display.

[0025] like Figure 2 When the vehicle network is awakened from sleep mode, the function logic is as follows:

[0026] 1. Handshake communication: When the vehicle network is awakened, the instrument cluster mainboard 2 and the vehicle infotainment host 3 perform handshake interaction through CAN signals. When the handshake is successful, subsequent information interaction and transmission can be performed. If the handshake is unsuccessful, the instrument cluster mainboard 2 will not request processing.

[0027] 2. Video transmission: When the instrument cluster main board 2 detects that the current display needs to call the video signal, the instrument cluster main board 2 sends a power-on request signal to the vehicle infotainment host 3 through CAN; after receiving this signal, the vehicle infotainment host 3 transmits the power-on effect to the instrument cluster main board 2 through MIPI, and the instrument cluster main board 2 processes it and then transmits it to the instrument TFT3 through LVDS for terminal display.

[0028] 3. End command: When the vehicle infotainment host 3 has completed the transmission of the start-up effect, it will send the end signal to the instrument cluster main board 2 through the CAN signal. At this time, the instrument cluster main board 2 will immediately stop the display of the instrument TFT3 after receiving it. If the vehicle infotainment host 3 has not completed the transmission of the start-up effect within the specified time range, the instrument cluster main board 2 will perform internal abnormal processing and force the end of the transmission to the instrument TFT3 display to ensure the coordination and synchronization between various components.

[0029] This interactive display mainly includes the instrument's startup animation, welcome function, full-screen navigation, theme transition switching, IACC's 3D scene and other displays, and the interactive display logic is consistent.

[0030] In the above solution of this embodiment, the instrument cluster and the in-vehicle infotainment host are no longer separate controllers, but are combined and coordinated through the low-platform instrument cluster and the conventional in-vehicle infotainment host to achieve the functional display requirements of the terminal. This interactive design improves the user experience and, compared with the one-to-two design, has a better cost, more mature and stable technology, and relatively reliable hardware supply.

Claims

1. An interactive display method for an automobile combination instrument and an in-vehicle infotainment host, characterized in that: include: After being awakened, the instrument cluster mainboard requests a handshake with the vehicle infotainment host; After the combination instrument mainboard and the vehicle infotainment host successfully shake hands, determine whether the vehicle ignition gear is in the ON gear; If the vehicle's ignition gear is in the ON position, the instrument cluster mainboard initiates a video signal call request to the vehicle infotainment host; The in-vehicle infotainment host transmits the start-up effect to the instrument cluster main board based on the video signal call request; The instrument cluster main board controls the instrument TFT to display the startup effect.

2. The method according to claim 1, characterized in that The instrument cluster main board sends the startup effect to the instrument TFT for display via the LVDS line.

3. The method according to claim 1, characterized in that The instrument cluster main board requests handshake with the vehicle infotainment host through CAN signal.

4. The method according to claim 1, characterized in that: The in-vehicle infotainment host transmits the start-up effect to the instrument cluster main board via MIPI.

5. The method according to claim 1, characterized in that When the vehicle-mounted infotainment host is transmitting the startup effect to the instrument cluster main board, if the vehicle-mounted infotainment host fails to complete the transmission of the startup effect within the preset time, the vehicle-mounted infotainment host stops transmitting the startup effect, and the vehicle-mounted infotainment host triggers the instrument cluster main board through the CAN signal to control the instrument TFT to stop displaying the startup effect.

6. The method according to claim 1, characterized in that After the vehicle infotainment host completes the transmission of the startup effect, it sends an end signal to the instrument cluster main board through the CAN signal, triggering the instrument cluster main board to control the instrument TFT to stop displaying the startup effect.

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