Infotainment system, vehicle interface multiplexing method, vehicle, and storage medium

Abstract

The present application relates to the field of car machine systems, and more particularly to a car machine system, a car interface multiplexing method, a vehicle and a computer storage medium. The car machine system comprises: an interface unit, the interface unit providing a connection to an external device; a mode switching unit, the mode switching unit being configured to gate one of a first transmission path and a second transmission path according to a first instruction, wherein the first instruction indicates a type of the external device; and a signal processing unit, the signal processing unit being configured to: receive a signal from the mode switching unit via the gated transmission path; and select a signal output mode for the mode switching unit according to the first instruction.

Description

Technical Field

[0001] This invention relates to the field of vehicle infotainment systems, and more specifically to a vehicle infotainment system, a vehicle interface multiplexing method, a vehicle, and a computer storage medium. Background Technology

[0002] With the development of automotive smart cockpit technology, users' demands for the functional diversity of smart cockpits are increasing. For example, in the design of smart cockpits for new energy vehicles, some manufacturers have already attempted to project the high-definition video output of home game consoles onto the in-vehicle central control screen to achieve in-vehicle screen projection functionality. Generally, multiple interfaces need to be installed in the car's cockpit to meet the input and / or output requirements of various types of signals. However, adding an in-vehicle interface for each requirement not only affects the spatial layout of the car's cockpit and increases the system's hardware costs, but also impacts the user experience and aesthetics. Summary of the Invention

[0003] To address or at least alleviate one or more of the above problems, the following technical solutions are provided.

[0004] According to a first aspect of the present invention, a vehicle infotainment system is provided, the system comprising: an interface unit providing a connection to an external device; a mode switching unit configured to select one of a first transmission path and a second transmission path according to a first instruction, wherein the first instruction indicates the type of the external device; and a signal processing unit configured to: receive a signal from the mode switching unit via the selected transmission path; and select a signal output mode for the mode switching unit according to the first instruction.

[0005] As an alternative or supplement to the above solutions, in a system according to an embodiment of the present invention, the interface unit conforms to the USB Type-C specification, and the interface unit includes: a first path operating based on the DP protocol, through which the system receives image signals and / or audio signals from the external device; a second path operating based on the DP protocol, through which the system transmits image signals and / or audio signals to the external device; and a third path operating based on the USB protocol, through which the system realizes bidirectional signal transmission with the external device.

[0006] As an alternative or supplement to the above solutions, in a system according to an embodiment of the present invention, the first instruction is generated based on the identification of the type of the external device, and if the first instruction indicates that the external device is a DP output device, the mode switching unit selects the first transmission path to transmit the DP signal output by the external device to the signal processing unit via the first transmission path; if the first instruction indicates that the external device is a DP input device, the mode switching unit selects the second transmission path, and the signal processing unit switches to DP output mode to transmit the DP signal output by the signal processing unit to the external device via the second transmission path; and if the first instruction indicates that the external device is a USB signal device, the mode switching unit selects the second transmission path, and the signal processing unit switches to USB port mode, so that the signal processing unit and the external device can achieve bidirectional signal transmission via the second transmission path.

[0007] As an alternative or supplement to the above solutions, a system according to an embodiment of the present invention further includes: a serializer configured to convert a DP signal received from the mode switching unit via the first transmission path into an image serial signal and / or an audio serial signal; and a deserializer configured to deserialize the image serial signal and / or audio serial signal received via an LVDS cable and transmit the deserialized image signal and / or audio signal to the signal processing unit.

[0008] As an alternative or supplement to the above solutions, a system according to an embodiment of the present invention further includes: a USB interface unit configured to: receive a USB signal from the mode switching unit via the second transmission path and transmit it to the signal processing unit; receive a DP signal from the signal processing unit in DP output mode via a USB cable; and perform bidirectional data transmission with the signal processing unit in USB port mode via a USB cable.

[0009] As an alternative or supplement to the above solutions, in a system according to an embodiment of the present invention, the interface is further configured to provide power to the external device.

[0010] As an alternative or supplement to the above solutions, in a system according to an embodiment of the present invention, the signal processing unit includes an intelligent cockpit domain controller.

[0011] As an alternative or supplement to the above solutions, in a system according to an embodiment of the present invention, the DP output device includes an external smart device that uses the vehicle's central control screen as a display interface, and the DP input device includes an in-vehicle augmented reality device or an in-vehicle virtual reality device.

[0012] According to a second aspect of the present invention, a vehicle interface multiplexing method is provided, the method comprising the following steps performed by a vehicle infotainment system: performing signal interaction with an external device through an interface unit of the vehicle infotainment system; selecting a first transmission path or a second transmission path according to a first instruction using a mode switching unit of the vehicle infotainment system, wherein the first instruction indicates the type of the external device; receiving a signal from the mode switching unit via the selected transmission path using a signal processing unit of the vehicle infotainment system; and switching the signal output mode of the mode switching unit according to the first instruction using the signal processing unit.

[0013] As an alternative or supplement to the above solutions, in a method according to an embodiment of the present invention, the interface unit conforms to the USB Type-C specification, and the interface unit includes: a first path operating based on the DP protocol, through which the system receives image signals and / or audio signals from the external device; a second path operating based on the DP protocol, through which the system transmits image signals and / or audio signals to the external device; and a third path operating based on the USB protocol, through which the system realizes bidirectional signal transmission with the external device.

[0014] As an alternative or supplement to the above solutions, in a method according to an embodiment of the present invention, the first instruction is generated based on the identification of the type of the external device, and if the first instruction indicates that the external device is a DP output device, the mode switching unit selects the first transmission path to transmit the DP signal output by the external device to the signal processing unit via the first transmission path; if the first instruction indicates that the external device is a DP input device, the mode switching unit selects the second transmission path, and the signal processing unit switches to DP output mode to transmit the DP signal output by the signal processing unit to the external device via the second transmission path; and if the first instruction indicates that the external device is a USB signal device, the mode switching unit selects the second transmission path, and the signal processing unit switches to USB port mode, so that the signal processing unit and the external device can achieve bidirectional signal transmission via the second transmission path.

[0015] According to a third aspect of the present invention, a vehicle is provided, comprising any one of the vehicle infotainment systems described in the first aspect of the present invention.

[0016] According to a fourth aspect of the present invention, a computer storage medium is provided, the computer storage medium including instructions that, when executed, perform any one of the methods described according to a second aspect of the present invention.

[0017] According to one or more embodiments of the present invention, the vehicle infotainment system or vehicle interface multiplexing scheme utilizes the signal processing capabilities of the vehicle infotainment system itself (e.g., the intelligent cockpit domain controller of the vehicle central computing platform) and utilizes a mode switching unit capable of selecting different transmission paths (e.g., a conversion chip supporting DP ALT mode), thereby satisfying the data interaction needs between the vehicle and different external devices through a single vehicle interface. Specifically, this scheme can utilize a single vehicle interface to realize data transmission between the vehicle and USB devices, between the vehicle and in-vehicle augmented reality devices or in-vehicle virtual reality devices (e.g., split AR / VR glasses), and between the vehicle and home game consoles using the in-vehicle central control screen as the display interface, expanding the functions of the vehicle infotainment system while saving cabin space layout and additional hardware costs. Attached Figure Description

[0018] The above and / or other aspects and advantages of the present invention will become clearer and more readily understood from the following description taken in conjunction with the accompanying drawings, in which the same or similar elements are denoted by the same reference numerals. In the drawings:

[0019] Figure 1 This is a schematic block diagram of a vehicle infotainment system 10 according to an embodiment of the present invention;

[0020] Figure 2 A schematic block diagram of a vehicle infotainment system 20 connected to a DP output device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic block diagram of a vehicle infotainment system 30 connected to a DP input device according to an embodiment of the present invention;

[0022] Figure 4 A schematic block diagram of a vehicle infotainment system 40 connected to a USB signal device according to an embodiment of the present invention; and

[0023] Figure 5 This is a schematic flowchart of a vehicle interface multiplexing method 50 according to an embodiment of the present invention. Detailed Implementation

[0024] The following detailed description is merely exemplary in nature and is not intended to limit the disclosed technology or its application and use. Furthermore, it is not intended to be bound by any express or implied theory presented in the foregoing technical fields, background art, or the following detailed description.

[0025] In the following detailed description of the embodiments, numerous specific details are set forth in order to provide a more thorough understanding of the disclosed technology. However, it will be apparent to those skilled in the art that the disclosed technology can be practiced without these specific details. In other instances, well-known features have not been described in detail to avoid unnecessarily complicating the description.

[0026] Terms such as "comprising" and "including" indicate that, in addition to the units and steps that are directly and explicitly stated in the specification, the technical solution of the present invention does not exclude the presence of other units and steps that are not directly or explicitly stated. Terms such as "first" and "second" do not indicate the order of the units in terms of time, space, size, etc., but are merely used to distinguish the units.

[0027] In the following, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic block diagram of a vehicle infotainment system 10 according to one or more embodiments of the present invention. To clearly illustrate the principles of the invention, Figure 1 Other devices that work in conjunction with the vehicle infotainment system 10 are also shown.

[0029] Similar to existing in-vehicle infotainment systems, Figure 1 The in-vehicle infotainment system 10 shown can provide an interface for external devices (e.g., mobile terminals) to enable functional complementarity. For example, a mobile terminal can be connected to the in-vehicle infotainment system 10, thereby enabling the in-vehicle infotainment system 10 to control the mobile terminal. The mobile terminal can be a smartphone; in some scenarios, the in-vehicle infotainment system 10 can control the mobile terminal to make calls and play music, while the in-vehicle infotainment system 10 can act as the audio output device for the mobile terminal. Exemplarily, the mobile terminal can also be other forms of portable devices, such as laptops, tablets, e-book readers, smartwatches, smart bracelets, etc.

[0030] Unlike traditional in-vehicle infotainment systems, Figure 1The in-vehicle infotainment system 10 shown can also provide an interface for external augmented reality (AR) or virtual reality (VR) devices, allowing these devices to utilize the hardware and software already deployed in the system to implement their functions or enhance their user experience. Currently, all-in-one AR / VR devices on the market are limited by the computing power of their main chips, resulting in low resolution, low frame rates, and limited performance and power consumption, leading to a poor user experience. With the in-vehicle infotainment system 10 provided by this invention, external AR / VR devices can utilize the computing power of the central computing platform within the system to replace the computing power of their own chips. This allows the image and / or audio signals generated by the central computing platform to be transmitted to the external AR / VR device via the interface, providing users with a higher resolution and higher frame rate immersive gaming or movie-watching experience.

[0031] It is worth noting that, Figure 1 The in-vehicle infotainment system 10 shown can also provide an interface for external gaming devices (such as Sony's PS5, Microsoft's Xbox, and Nintendo's Switch) to project high-definition video output from these devices onto the in-vehicle central control screen, achieving a game projection effect. It should be understood that... Figure 1 The in-vehicle infotainment system 10 shown can also provide interfaces to other external smart devices that use the in-vehicle central control screen as a display interface, and the aforementioned external smart devices are not limited to gaming devices.

[0032] In conclusion, Figure 1 The vehicle infotainment system 10 shown herein can fulfill the following functions: support connection of augmented reality or virtual reality devices to the vehicle infotainment system, so as to output image signals and / or audio signals generated by the vehicle central computing platform to the augmented reality or virtual reality devices; support screen projection function of external gaming devices, so as to transmit image signals and / or audio signals output by external gaming devices to the vehicle central control screen and audio devices; and USB interface function for mobile terminals. As will be described in detail below, the vehicle infotainment system 10 according to the present invention can realize the above three functions using a single vehicle interface, thereby expanding the functions of the vehicle infotainment system while saving cabin space layout and additional hardware interface costs.

[0033] like Figure 1 As shown, the vehicle infotainment system 10 specifically includes an interface unit 110, a mode switching unit 120, and a signal processing unit 130.

[0034] Interface unit 110 provides connectivity to external devices. Exemplarily, the vehicle infotainment system 10 connects to external devices 140 via interface unit 110, such as an external gaming device 141, an in-vehicle augmented reality or virtual reality device 142, and a mobile terminal 143 such as a smartphone. Exemplarily, the in-vehicle augmented reality or virtual reality device 142 may include wearable glasses and a control handle connected wirelessly (e.g., via Bluetooth) to the glasses. The control handle allows interaction with the screen displayed on the glasses, enabling actions such as selection, confirmation, entry, and exit.

[0035] Optionally, the interface unit 110 can also be used to provide power to the external device 140.

[0036] Optionally, the interface unit 110 of the vehicle infotainment system 10 conforms to the USB Type-C specification. USB Type-C is a USB interface form factor standard that is smaller than both Type-A and Type-B, and can be used for both host and slave devices.

[0037] Optionally, the interface unit 110 includes a first path and a second path operating based on the Display Port (DP) protocol, and a third path operating based on the USB protocol. Exemplarily, the vehicle system 10 receives image and / or audio signals from a DP output device (e.g., an external gaming device 141 capable of outputting image and / or audio signals) via the first path, transmits image and / or audio signals to a DP input device (e.g., an augmented reality or virtual reality device utilizing the computing power of an in-vehicle central computing platform) via the second path, and achieves bidirectional signal transmission with a mobile terminal 143 (e.g., a smartphone with a USB interface) via the third path.

[0038] Since common automotive system-on-a-chip (SOC) chips only support DP signal output and cannot support DP signal input, it is necessary to solve the problem of how to transmit the DP signal to the automotive SOC if the above-mentioned game console screen projection is to be implemented. As detailed below, this application implements the DP signal input function through the setting mode switching unit 120.

[0039] Optionally, the mode switching unit 120 can be a conversion chip that supports DP ALT mode, providing switching functionality between DP and USB modes. The DP ALT mode standard, published by the Video Electronics Standards Association (VESA), specifies how to switch between DP and USB modes on the same USB Type-C interface. In DP mode, up to 80 Gbps of DP data can be transmitted using all four high-speed channels of the data cable.

[0040] The mode switching unit 120 of the vehicle infotainment system 10 is configured to select one of a first transmission path and a second transmission path according to a first instruction, wherein the first instruction indicates the type of the external device 140. For example, the types of external devices 140 include DP output devices, DP input devices, and USB signal devices that use the vehicle's central control screen as a display interface. The mode switching unit 120 can switch to DP mode or USB mode based on the identification of the type of external device 140 and select the corresponding transmission path.

[0041] Optionally, if the first instruction indicates that the external device 140 is a DP output device, the mode switching unit 120 selects the first transmission path to transmit the DP signal (i.e., image signal and / or audio signal) output by the external device 140 to the signal processing unit 130 via the first transmission path. Since the interface unit 110 and the mode switching unit 120 are typically located in the cockpit area in the form of a USB Box for user convenience, the interface unit 110 and the mode switching unit 120 are usually physically separated from the signal processing unit 130.

[0042] To address this situation, a serializer 150 can be configured at the mode switching unit 120 end and a deserializer 160 at the signal processing unit 130 end to enable data transmission between the mode switching unit 120 and the signal processing unit 130. Optionally, when the mode switching unit 120 selects the first transmission path, the mode switching unit 120 is connected to the serializer 150, and the serializer 150 converts the DP signal received from the mode switching unit 120 into an image serial signal (e.g., a camera serial interface (CSI) signal) and / or an audio serial signal (e.g., an integrated circuit built-in audio bus (I2S) signal), and outputs it to a low-voltage differential signal (LVDS) cable via a serial protocol. Correspondingly, the deserializer 160 receives the image serial signal and / or audio serial signal via the LVDS cable, deserializes it, and transmits the deserialized image signal and / or audio signal to the signal processing unit 130.

[0043] When a deserialized image signal and / or audio signal is received, the signal processing unit 130 transmits the image signal and / or audio signal to the vehicle central control display and the vehicle audio player to complete the screen projection function of the DP output device (e.g., external game device 141).

[0044] Optionally, if the first instruction indicates that the external device 140 is a DP input device or a USB signal device, the mode switching unit selects the second transmission path to transmit the DP signal output by the signal processing unit 130 to the external device 140, or to realize bidirectional signal transmission between the signal processing unit 130 and the external device 140.

[0045] Optionally, the signal processing unit 130 of the vehicle system 10 may be a Cockpit Domain Controller (CDC) in the central computing platform of the vehicle computer. Exemplarily, the signal processing unit 130 may also include an Advanced Driver Assistance System Controller (ADAS Domain Controller, ADC) and a Vehicle Domain Controller (VDC). This Cockpit Domain Controller can replace the computing chip of an integrated augmented reality or virtual reality device to generate image and / or audio signals for updating the display and playback content of the augmented reality or virtual reality device. It can also act as a combo interface for USB and DP signal output, that is, to achieve USB or DP signal output through a single interface. The signal processing unit 130 can select the signal output mode for the mode switching unit 120 according to a first instruction. Specifically, if the first instruction indicates that the external device 140 is a DP input device, the signal processing unit 130 switches to DP output mode to transmit the DP signal it generates to the DP input device via the second transmission path; if the first instruction indicates that the external device 140 is a USB signal device, the signal processing unit 130 switches to USB port mode to enable bidirectional signal transmission with the USB signal device via the second transmission path.

[0046] Optionally, a USB interface unit 170 for the second transmission path can be provided at the mode switching unit 120, and the USB interface unit 170 and the signal processing unit 130 can be connected via a USB cable. The USB interface unit 170 can receive DP signals from the signal processing unit 130 in DP output mode via the USB cable, and can also perform bidirectional data transmission with the signal processing unit 130 in USB port mode via the USB cable.

[0047] Continue to refer to Figure 2 , Figure 2This is a schematic block diagram of a vehicle infotainment system 20 connected to a DP output device according to an embodiment of the present invention.

[0048] For example, the DP output device is an external gaming device 141 capable of outputting image signals and / or audio signals, such as Sony's PS5, Microsoft's Xbox, Nintendo's Switch, etc. Figure 2 As shown, an external gaming device 141 with DP output capability can be directly connected to the interface unit 110 via a DP cable. If the external gaming device 141 only has an HDMI output capability, the HDMI-DP converter chip can be used to convert the HDMI-DP signal generated by the external gaming device 141 into a DP signal. At this time, through the vehicle system 20's recognition of the DP output device, the mode switching unit 120 will switch to DP mode and select the first transmission path to connect the mode switching unit 120 to the serializer 150. The serializer 150 converts the DP signal into CSI and I2S signals and processes them through the serial protocol before outputting them to the LVDS cable. The deserializer 160 deserializes the signal received via the LVDS cable and transmits the image and audio signals to the signal processing unit 130 through the CSI interface. The signal processing unit 130 then outputs the image and audio signals to the vehicle's central control display and vehicle audio player to complete the screen projection function of the DP output device.

[0049] Continue to refer to Figure 3 , Figure 3 This is a schematic block diagram of a vehicle infotainment system 30 connected to a DP input device according to an embodiment of the present invention.

[0050] For example, the DP input device is an in-vehicle augmented reality or virtual reality device 142 capable of utilizing the computing power of an in-vehicle central computing platform, such as AR / VR glasses. Figure 2 As shown, the DP input device is plugged into the interface unit 110 via a DP cable. At this time, based on the vehicle system 30's recognition of the DP input device, the signal processing unit 130 switches to DP output mode to transmit the generated DP signal to the USB interface unit 170 via a USB cable. Furthermore, based on the vehicle system's recognition of the DP input device, the mode switching unit 120 switches to USB mode and selects the second transmission path to connect the USB interface unit 170 to the mode switching unit 120, and transmits the DP signal through the interface unit 110 to the in-vehicle augmented reality or virtual reality device 142 to complete the display and update functions of the in-vehicle augmented reality or virtual reality device 142.

[0051] Continue to refer to Figure 4 , Figure 4This is a schematic block diagram of a vehicle infotainment system 40 connected to a USB signal device according to an embodiment of the present invention.

[0052] For example, the USB signal device is a mobile terminal 143 such as a smartphone. Figure 2 As shown, the USB signal device is directly plugged into the interface unit 110. At this time, through the vehicle system's recognition of the USB signal device, the signal processing unit 130 switches to USB port mode, and the mode switching unit 120 switches to USB mode and selects the second transmission path. At this time, the USB signal device and the USB interface unit 170 of the signal processing unit 130 handshake according to the standard USB protocol and establish a USB connection, completing the connection function of the USB signal device.

[0053] Figure 5 A schematic flowchart of an in-vehicle interface multiplexing method 50 according to an embodiment of the present invention is shown. Figure 5 As shown, method 50 includes a vehicle infotainment system (e.g., Figure 1-4 The following steps are performed by the vehicle infotainment systems 10, 20, 30, and 40 shown in the diagram: In step S510, signal interaction is performed with external devices through the interface unit of the vehicle infotainment system; in step S520, the mode switching unit of the vehicle infotainment system selects a first transmission path or a second transmission path according to a first instruction, wherein the first instruction indicates the type of external device; in step S530, the signal processing unit of the vehicle infotainment system receives a signal from the mode switching unit via the selected transmission path; and in step S540, the signal processing unit switches the signal output mode of the mode switching unit according to the first instruction. The steps of method 50 can be carried out with reference to the specific workflow of the vehicle infotainment system described above, and the relevant content is also cited here. Due to space limitations, they will not be elaborated here.

[0054] The interface unit in step S510 conforms to the USB Type-C specification, and the interface unit includes: a first channel based on the DP protocol, through which the system receives image signals and / or audio signals from an external device; a second channel based on the DP protocol, through which the system transmits image signals and / or audio signals to an external device; and a third channel based on the USB protocol, through which the system realizes bidirectional signal transmission with an external device.

[0055] The first instruction in steps S520 and S540 is generated based on the identification of the type of external device. If the first instruction indicates that the external device is a DP output device, the mode switching unit selects the first transmission path to transmit the DP signal output by the external device to the signal processing unit via the first transmission path. If the first instruction indicates that the external device is a DP input device, the mode switching unit selects the second transmission path, and the signal processing unit switches to DP output mode to transmit the DP signal output by the signal processing unit to the external device via the second transmission path. If the first instruction indicates that the external device is a USB signal device, the mode switching unit selects the second transmission path, and the signal processing unit switches to USB port mode to enable bidirectional signal transmission between the signal processing unit and the external device via the second transmission path.

[0056] According to another aspect of the invention, a vehicle is provided that includes a vehicle infotainment system (e.g., according to one aspect of the invention) Figure 1-4 The vehicle infotainment systems shown are 10, 20, 30, and 40.

[0057] Furthermore, as described above, the present invention can also be implemented as a computer storage medium storing information for causing a computer to perform, such as Figure 5 The procedure for the method shown is as follows. Here, various types of computer storage media can be used, such as disks (e.g., magnetic disks, optical disks, etc.), cards (e.g., memory cards, optical cards, etc.), semiconductor memory (e.g., ROM, non-volatile memory, etc.), and tapes (e.g., magnetic tape, cassette tape, etc.).

[0058] Where applicable, the various embodiments provided by the present invention may be implemented using hardware, software, or a combination of hardware and software. Furthermore, where applicable, without departing from the scope of the invention, the various hardware and / or software components described herein may be combined into composite components comprising software, hardware, and / or both. Where applicable, without departing from the scope of the invention, the various hardware and / or software components described herein may be divided into sub-components comprising software, hardware, or both. Additionally, where applicable, it is contemplated that software components may be implemented as hardware components, and vice versa.

[0059] The software (such as program code and / or data) according to the invention can be stored on one or more computer storage media. It is also contemplated that the software identified herein can be implemented using one or more networked and / or otherwise general-purpose or special-purpose computers and / or computer systems. Where applicable, the order of the various steps described herein can be changed, combined into compound steps, and / or divided into sub-steps to provide the features described herein.

[0060] The embodiments and examples presented herein are provided to best illustrate embodiments of the invention and its particular applications, thereby enabling those skilled in the art to practice and use the invention. However, those skilled in the art will understand that the above description and examples are provided merely for ease of illustration and example. The descriptions presented are not intended to cover all aspects of the invention or to limit the invention to the precise forms disclosed.

Claims

1. A head unit system characterized by comprising: The system comprises: an interface unit providing a connection to an external device; a mode switching unit configured to gate one of a first transmission path and a second transmission path according to a first instruction, wherein the first instruction indicates a type of the external device; and a signal processing unit configured to: receive a signal from the mode switching unit via the gated transmission path; and select a signal output mode for the mode switching unit according to the first instruction, wherein, if the first instruction indicates that the external device is a DP output type device, the mode switching unit gates the first transmission path to transmit a DP signal output by the external device to the signal processing unit via the first transmission path; if the first instruction indicates that the external device is a DP input type device, the mode switching unit gates the second transmission path and the signal processing unit switches to a DP output mode to transmit a DP signal output by the signal processing unit to the external device via the second transmission path; if the first instruction indicates that the external device is a USB signal device, the mode switching unit gates the second transmission path and the signal processing unit switches to a USB port mode to enable bidirectional signal transmission between the signal processing unit and the external device via the second transmission path.

2. The system of claim 1, wherein, The interface unit complies with the USB Type-C specification, and the interface unit comprises: a first channel operating based on a DP protocol, through which the system receives image signals and / or audio signals from the external device; a second channel operating based on a DP protocol, through which the system transmits image signals and / or audio signals to the external device; and a third channel operating based on a USB protocol, through which the system enables bidirectional signal transmission with the external device.

3. The system of claim 1, further comprising: a serializer configured to convert a DP signal received from the mode switching unit via the first transmission path into image serial signals and / or audio serial signals; a deserializer configured to deserialize the image serial signals and / or audio serial signals received via an LVDS cable and transmit deserialized image signals and / or audio signals to the signal processing unit.

4. The system of claim 1, further comprising: a USB interface unit configured to: receive a USB signal from the mode switching unit via the second transmission path and transmit to the signal processing unit; receive a DP signal from the signal processing unit in a DP output mode via a USB cable; and enable bidirectional data transmission with the signal processing unit in a USB port mode via a USB cable. The interface is further configured to provide power to the external device.

5. The system of claim 1, wherein, The signal processing unit comprises an intelligent cockpit domain controller.

6. The system of claim 1, wherein, ​ 7. The system of claim 1, wherein, The DP output type device includes an external smart device using a vehicle-mounted central control screen as a display interface, and the DP input type device includes a vehicle-mounted augmented reality device or a vehicle-mounted virtual reality device.

8. A method for multiplexing vehicle interfaces, characterized in that The method includes the following steps performed by the vehicle machine system: signal interaction with an external device through an interface unit of the vehicle machine system; selecting a first transmission path or a second transmission path according to a first instruction using a mode switching unit of the vehicle machine system, wherein the first instruction indicates the type of the external device; receiving a signal from the mode switching unit via the selected transmission path using a signal processing unit of the vehicle machine system; and switching the signal output mode to the mode switching unit according to the first instruction using the signal processing unit, wherein, if the first instruction indicates that the external device is a DP output type device, the mode switching unit selects the first transmission path to transmit the DP signal output by the external device to the signal processing unit via the first transmission path; if the first instruction indicates that the external device is a DP input type device, the mode switching unit selects the second transmission path, and the signal processing unit switches to a DP output mode to transmit the DP signal output by the signal processing unit to the external device via the second transmission path; if the first instruction indicates that the external device is a USB signal device, the mode switching unit selects the second transmission path, and the signal processing unit switches to a USB port mode to enable bidirectional signal transmission between the signal processing unit and the external device via the second transmission path.

9. The method of claim 8, wherein, The interface unit complies with the USB Type-C specification, and the interface unit includes: a first channel operating based on the DP protocol, through which the system receives image signals and / or audio signals from the external device; a second channel operating based on the DP protocol, through which the system transmits image signals and / or audio signals to the external device; and a third channel operating based on the USB protocol, through which the system enables bidirectional signal transmission with the external device.

10. A vehicle characterized by comprising: The vehicle machine system includes any one of claims 1-7.

11. A computer storage medium, characterized in that The computer storage medium includes instructions that, when executed, perform the method of any one of claims 8-9. The computer storage medium includes instructions that, when executed, perform the method of any one of claims 8-9.

Images