In-vehicle terminal

Abstract

The present invention provides a vehicle-mounted terminal, comprising: a main antenna for receiving and transmitting cellular wireless signals; a satellite navigation antenna for receiving satellite positioning signals; a cellular communication module for cellular network communication and satellite positioning; a rear-view camera device for acquiring images and / or videos behind the vehicle; a main processor for processing the images and / or videos acquired by the rear-view camera device and outputting the processed images and / or videos; a CAN transceiver for receiving data on the CAN bus and / or sending data to the CAN bus; and a microcontroller for performing protocol conversion on the data exchanged between the CAN transceiver and the cellular communication module. The vehicle-mounted terminal of the present invention integrates the functions of a T-Box, an intelligent gateway, and a streaming media rear-view mirror, eliminates the devices with overlapping functions, effectively utilizes resources, reduces the space occupied by the devices, improves the system interaction efficiency and reliability, and reduces the overall development cost.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of automobiles, and particularly relates to an in-vehicle terminal. Background Art

[0002] Vehicle networking is a new technology that realizes interconnection and intercommunication among vehicles, between vehicles and roads, between vehicles and people, and between vehicles and service platforms by means of information and communication technologies. To achieve these interconnections and intercommunications in vehicle networking technology, the currently adopted technology usually involves setting a T-Box (Telematics Box) and / or an intelligent gateway in the vehicle.

[0003] Figure 1 is the basic block diagram of an existing T-Box. Refer to Figure 1 As shown, the T-Box mainly includes a cellular communication module and a processor. The cellular communication module is connected to a main antenna, a diversity antenna, a satellite navigation antenna, and an eSIM card to achieve cellular communication and satellite positioning. The cellular communication module is also connected to a wireless local area network module to achieve wireless local area network communication and / or sharing of the wireless local area network. The T-Box also includes a storage module, an audio codec module, and a power amplifier module. The cellular communication module is also connected to the storage module, the audio codec module, the power amplifier module, etc. to achieve multimedia playback. The processor is connected to the cellular communication module and is mainly used to control the cellular communication module to perform various actions, such as performing cellular communication, satellite positioning, playing multimedia, etc. In addition, the processor receives an ignition signal, and the ignition signal serves as a trigger signal for the processor to start working. Of course, the T-Box also includes a power supply module connected to the battery to supply power to each component in the T-Box.

[0004] Figure 2 is the basic block diagram of an existing intelligent gateway. Refer to Figure 2 As shown, the intelligent gateway mainly includes a processor, and a CAN transceiver, an Ethernet switch, and a cellular communication module that are respectively connected to the processor. In the intelligent gateway, the processor mainly performs protocol conversion on the data exchanged between any two of the CAN transceiver, the Ethernet switch, and the cellular communication module. Similarly, the intelligent gateway also includes a power supply module connected to the battery to supply power to each component in the intelligent gateway.

[0005] The streaming media rearview mirror module collects images behind the vehicle, and can present the situation behind the vehicle in real time, expand the rearview field of view, and reduce the rearview blind area. Figure 3 is the basic block diagram of an existing streaming media rearview mirror module. Refer to Figure 3As shown in the figure, the streaming media rearview mirror module includes a rearview camera, a main processor (MPU), a microcontroller (MCU), a memory, a storage module, a power management module, a power module, and an inner rearview mirror (including a display screen), etc. The rearview camera is installed at the rear of the vehicle and is used to collect images of the rear of the vehicle. The main processor processes the images collected by the rearview camera and displays them to the driver through the inner rearview mirror. The main processor is also respectively connected to the memory, the storage module, and the power management module to assist in realizing the processing function of the main processor for the rear images. The microcontroller is mainly used to control operations such as starting, shutting down, starting to process images, and stopping to process images of components such as the main processor according to ignition signals, etc. The power module is used to supply power to each component in the streaming media rearview mirror module.

[0006] In order to achieve interconnection and intercommunication and driving record, the existing practice is usually to install a T-Box, an intelligent gateway, and a streaming media rearview mirror on the vehicle at the same time. However, this practice has disadvantages such as high cost and large occupied space. Therefore, there is an urgent need for a low-cost vehicle-mounted terminal to realize the functions of the T-Box, the intelligent gateway, and the streaming media rearview mirror. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a vehicle-mounted terminal, which has the functions of a T-Box, an intelligent gateway, and a streaming media rearview mirror, and has advantages such as making full use of resources, reducing occupied space, improving system interaction efficiency and reliability, and reducing the overall cost.

[0008] To solve the above technical problem, the present invention provides a vehicle-mounted terminal, including: a main antenna for receiving and transmitting cellular wireless signals; a satellite navigation antenna for receiving satellite positioning signals; a cellular communication module respectively connected to the main antenna and the satellite navigation antenna for cellular network communication and satellite positioning; a rearview imaging device for acquiring images and / or videos of the rear of the vehicle; a main processor connected to the rearview imaging device for processing the images and / or videos acquired by the rearview imaging device and outputting the processed images and / or videos; a CAN transceiver for receiving data on the CAN bus and / or sending data to the CAN bus; and a microcontroller respectively connected to the cellular communication module and the CAN transceiver for controlling the actions of the cellular communication module and performing protocol conversion on the data exchanged between the CAN transceiver and the cellular communication module.

[0009] In an embodiment of the present invention, the vehicle-mounted terminal further includes: an Ethernet switch connected to the microcontroller for receiving and transmitting data packets conforming to the Ethernet protocol; wherein, the microcontroller is further used to perform protocol conversion on the data exchanged between any two of the CAN transceiver, the cellular communication module, and the Ethernet switch.

[0010] In an embodiment of the present invention, the vehicle-mounted terminal further includes: a diversity antenna, connected to the cellular communication module, for diversity receiving and transmitting cellular radio signals.

[0011] In an embodiment of the present invention, the vehicle-mounted terminal further includes: a wireless local area network antenna, for receiving and transmitting wireless local area network signals; a wireless local area network module, respectively connected to the wireless local area network antenna and the cellular communication module, for implementing wireless local area network communication.

[0012] In an embodiment of the present invention, the vehicle-mounted terminal further includes at least one of the following components: an eSIM card, connected to the cellular communication module, for storing user identification information; a first storage module, connected to the main processor, for storing data; a second storage module, connected to the cellular communication module, for storing data.

[0013] In an embodiment of the present invention, the vehicle-mounted terminal further includes: an audio codec module, connected to the cellular communication module, for encoding and decoding audio data.

[0014] In an embodiment of the present invention, the microcontroller is further connected to the main processor, and the microcontroller is further configured to control the operation of the main processor.

[0015] In an embodiment of the present invention, the vehicle-mounted terminal further includes: a power amplifier module, connected to the cellular communication module, for amplifying the audio signal output by the cellular communication module and outputting the amplified audio signal to a speaker; wherein, the microcontroller further controls the power amplifier module.

[0016] In an embodiment of the present invention, the vehicle-mounted terminal further includes: a data port, connected to the microcontroller, for implementing data interaction between the microcontroller and an external device.

[0017] In an embodiment of the present invention, the vehicle-mounted terminal further includes: a display screen, connected to the main processor, for displaying the image and / or video acquired by the rear-view camera device.

[0018] In an embodiment of the present invention, the vehicle-mounted terminal further includes: a USB port, connected to the cellular communication module, for implementing data interaction between the cellular communication module and an external device; and / or an LVDS port, connected to the main processor, for implementing data interaction between the main processor and an external device.

[0019] In an embodiment of the present invention, the vehicle-mounted terminal further includes: a memory, connected to the main processor, for providing a temporary storage space for the data and / or instructions to be processed by the main processor.

[0020] In an embodiment of the present invention, the in-vehicle terminal further includes: a power supply module for supplying power to each component in the in-vehicle terminal; and / or a power management module connected to the main processor for performing power management on at least some of the components in the in-vehicle terminal according to an instruction of the main processor.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The in-vehicle terminal of the present invention has the functions of a T-Box, an intelligent gateway, and a streaming media rearview mirror. Compared with the technical solution that realizes the functions of a T-Box, an intelligent gateway, and a streaming media rearview mirror by combining these three module products of a T-Box, an intelligent gateway, and a streaming media rearview mirror, the in-vehicle terminal of the present invention omits the main processor, microcontroller, power supply module, and peripheral circuits with overlapping functions, and has the advantages of making full use of resources, reducing occupied space, improving system interaction efficiency and reliability, and reducing the overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a basic block diagram of an existing T-Box.

[0024] Figure 2 is a basic block diagram of an existing intelligent gateway.

[0025] Figure 3 is a basic block diagram of an existing streaming media rearview mirror.

[0026] Figure 4 is a basic block diagram of the in-vehicle terminal according to some embodiments of the present invention.

[0027] In the figure: 100 - in-vehicle terminal; 101 - cellular communication module; 102 - microcontroller; 103 - main processor; 104 - main antenna; 105 - diversity antenna; 106 - wireless local area network antenna; 107 - wireless local area network module; 108 - eSIM card; 109 - second storage module; 110 - USB port; 111 - CAN transceiver; 112 - Ethernet switch; 113 - rear view camera device; 114 - memory; 115 - first storage module; 116 - power management module; 117 - LVDS port; 118 - data port; 119 - satellite navigation antenna; 120 - audio codec module; 121 - power amplifier module; 122 - display screen; 123 - power supply module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention is provided in conjunction with the accompanying drawings.

[0029] Numerous specific details are set forth in the following description in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0030] Throughout the specification and claims, certain terms are used to denote specific system components. As those skilled in the art will appreciate, different companies may use different names to denote a component. It is not the intention herein to distinguish between components that have different names but the same function. In the specification and claims, the terms "comprising" and "including" are used in an open-ended manner and should thus be interpreted as "including, but not limited to...".

[0031] As used in this application and the claims, unless the context clearly dictates otherwise, the words "a", "an", "one", and / or "the" are not specifically intended to denote a singular instance, but may also include the plural. Generally speaking, the terms "comprising" and "including" merely indicate the inclusion of the steps and elements that have been specifically identified, and these steps and elements do not constitute an exclusive listing. A method or apparatus may also include other steps or elements.

[0032] In addition, each of the following embodiments of the description content has one or more technical features. However, this does not mean that those who use the present invention must simultaneously implement all the technical features in any one embodiment, or can only separately implement some or all of the technical features in different embodiments. In other words, on the premise that implementation is possible, those skilled in the art can, according to the disclosure of the present invention and depending on design specifications or implementation requirements, selectively implement some or all of the technical features in any one embodiment, or selectively implement the combination of some or all of the technical features in multiple embodiments, thereby increasing the flexibility when implementing the present invention.

[0033] It should be understood that when a component is referred to as being "on another component", "connected to another component", "coupled to another component", or "in contact with another component", it can be directly on, connected to, or coupled to, or in contact with the other component, or there may be intervening components. In contrast, when a component is referred to as being "directly on another component", "directly connected to", "directly coupled to", or "directly in contact with" another component, there are no intervening components. Similarly, when a first component is referred to as being "electrically in contact with" or "electrically coupled to" a second component, there is an electrical path between the first component and the second component that permits the flow of current. The electrical path may include capacitors, coupled inductors, and / or other components that permit the flow of current, even if there is no direct contact between the conductive components.

[0034] As introduced in the background art section, the existing T-Box, intelligent gateway, and streaming media rearview mirror are all separate module products, each performing its corresponding functions. The same components such as a processor (CPU), power circuit, and connector are present in all three module products. When using these three module products together to implement the functions of the T-Box, intelligent gateway, and streaming media rearview mirror, the same components in the three module products are duplicated, and the interaction between product modules is achieved by being connected through a wiring harness. Therefore, problems such as waste of hardware costs, more space occupation, low interaction efficiency, and low reliability will occur. To overcome these problems, the present invention proposes an in-vehicle terminal that simultaneously has the functions of a T-Box, an intelligent gateway, and a streaming media rearview mirror, which can make full use of resources, reduce space occupation, improve system interaction efficiency and reliability, and reduce the overall cost.

[0035] Figure 4 is a basic block diagram of the in-vehicle terminal according to some embodiments of the present invention. Refer to Figure 4 As shown, the in-vehicle terminal 100 may include a cellular communication module 101, a microcontroller (MCU) 102, a main processor 103, a main antenna 104, a CAN transceiver 111, a rear-view camera device 113, and a satellite navigation antenna 119. The microcontroller 102, the main antenna 104, and the satellite navigation antenna 119 are respectively connected to the cellular communication module 101. The rear-view camera device 113 is connected to the main processor 103. The CAN transceiver 111 is connected to the microcontroller 102.

[0036] The main antenna 104 can be used to transmit and receive cellular wireless signals to cooperate with the cellular communication module 101 to achieve cellular network communication. In some embodiments, the cellular network can be a cellular network of 2G (such as GSM, IS-95, IS-136, IDEN, PDC, etc.), 3G (such as W-CDMA, CDMA-2000, TD-SCDMA, WiMAX, etc.), 4G (such as LTE FDD, LTE TDD), etc. Correspondingly, the cellular wireless signal is also a wireless signal that conforms to one or more of the 2G, 3G, and 4G standards. It can be understood that cellular network communication can include, for example, voice communication, data communication, short message (Short Message Service, SMS) communication, or any combination thereof.

[0037] The satellite navigation antenna 119 can be used to receive satellite navigation signals and send the received satellite navigation signals to the cellular communication module 101 to cooperate with the cellular communication module 101 to achieve satellite positioning and navigation. In some embodiments, the satellite navigation signals can include, for example, GPS signals, Beidou signals, GLONASS signals, Galileo signals, etc., or any combination thereof.

[0038] The rear-view camera device 113 can be used to acquire images and / or videos of the rear of the vehicle. In some embodiments, the rear-view camera device 113 can be, for example, a visible light camera, an infrared camera, a lidar, etc. Preferably, the rear-view camera device 113 can be a wide-angle camera (for example, with a viewing angle greater than or equal to 100°, 130°, 150°, or 180°). In some embodiments, the rear-view camera device 113 can include one or more cameras. For example, it can be two cameras arranged at intervals to form binocular vision. It can be understood that the rear-view camera device 113 can be arranged above the rear license plate of the vehicle, below the rear license plate, on the rear bumper, etc.

[0039] The main processor 103 can be used to process the images and / or videos acquired by the rear-view camera device 113 and output the processed images and / or videos. In some embodiments, the processing performed by the main processor 103 on the images and / or videos acquired by the rear-view camera device 113 can be encoding, compression, noise reduction, sharpening, etc., or any combination thereof. In some embodiments, the main processor 103 can also be connected to the cellular communication module 101 and can send the unprocessed and / or processed images and / or videos acquired by the rear-view camera device 113 to the cloud through the cellular communication module 101. The cloud can be a remote personal computer, server, public cloud, private cloud, etc.

[0040] It can be understood that the main processor 103 can include, for example, a microcontroller, a microprocessor, a reduced instruction set computer (RISC), an application-specific integrated circuit (ASIC), an application-specific instruction set processor (ASIP), a central processing unit (CPU), a graphics processing unit (GPU), a physics processing unit (PPU), a single-chip microcomputer, a digital signal processor (DSP), a field-programmable gate array (FPGA), an advanced reduced instruction set system (ARM), a programmable logic device (PLD), any circuit or processor capable of performing at least one function, etc., or any combination thereof.

[0041] The CAN transceiver 111 is used to receive data from the CAN bus and / or send data to the CAN bus. It can be understood that the data received by the CAN transceiver 111 from the CAN bus can be sent to the microcontroller 102, and the microcontroller 102 further processes the received data, such as performing protocol conversion, etc. The microcontroller 102 can send the data conforming to the CAN bus protocol generated by it to the CAN transceiver 111, and then the CAN transceiver 111 sends the data to the CAN bus. Although in Figure 4 the illustrated embodiment, there is only one CAN transceiver 111, it can be understood that the vehicle-mounted terminal 100 can include multiple CAN transceivers 111, and these CAN transceivers 111 are all respectively connected to the microcontroller 102.

[0042] In some embodiments, the microcontroller 102 may also control the operations of the cellular communication module 101. It can be understood that the operations of the cellular communication module 101 may be one or more of the functions it has. For example, the operations of the cellular communication module 101 may be that the cellular communication module 101 cooperates with the main antenna 104 to achieve cellular network communication, or that the cellular communication module 102 cooperates with the satellite navigation antenna 119 to achieve satellite positioning and navigation.

[0043] In some embodiments, the microcontroller 102 may also perform protocol conversion on the data exchanged between the CAN transceiver 111 and the cellular communication module 101. Specifically, the microcontroller 102 may convert the data received by the CAN transceiver 111 that conforms to the CAN bus protocol into data that conforms to the cellular network communication protocol, and the microcontroller 102 may also convert the data sent by the cellular communication module 101 into data that conforms to the CAN bus protocol. In some embodiments, the microcontroller 102 may include, for example, an ARM processor, a DSP processor, a field programmable gate array (FPGA), a programmable logic device (PLD), a single-chip microcomputer, an ASIC, etc., or any combination thereof.

[0044] In some embodiments, the vehicle-mounted terminal 100 further includes an Ethernet switch 112. The Ethernet switch 112 is connected to the microcontroller 102 and is used for transmitting and receiving data packets that conform to the Ethernet protocol. In the embodiment where the vehicle-mounted terminal 100 includes the cellular communication module 101, the CAN transceiver 111, and the Ethernet switch 112, the microcontroller 102 is further used for performing protocol conversion on the data exchanged between any two of the CAN transceiver 111, the cellular communication module 101, and the Ethernet switch 112. Although in Figure 4 the illustrated embodiment, there is only one Ethernet switch 112, it can be understood that the vehicle-mounted terminal 100 may include multiple Ethernet switches 112, and these Ethernet switches 112 are respectively connected to the microcontroller 102.

[0045] In some embodiments, please continue to refer to Figure 4 , the vehicle-mounted terminal 100 may further include a diversity antenna 105. The diversity antenna 105 is connected to the cellular communication module 101 and is used for diversity reception and transmission of cellular radio signals. It can be understood that the diversity antenna 105 may receive cellular radio signals together with the main antenna 104, and the cellular communication module 101 may select and combine the cellular radio signals received by the diversity antenna 105 and the main antenna 104 to reduce the impact of cellular radio signal fading, thereby improving the signal-to-noise ratio of the received cellular radio signals. In some embodiments, the diversity antenna 105 may include one or more antennas, such as 2 antennas or 4 antennas.

[0046] The vehicle-mounted terminal 100 may further include a wireless local area network antenna 106 and a wireless local area network module 107. The wireless local area network module 107 is respectively connected to the wireless local area network antenna 106 and the cellular communication module 101. The wireless local area network antenna 106 can be used to receive and transmit wireless local area network signals. The wireless local area network module 106 and the wireless local area network module 107 can cooperate with each other to achieve wireless local area network communication. The wireless local area network mentioned above may include, for example, a wireless network conforming to the IEEE802.11 series standards, a wireless network conforming to the Bluetooth standard, a wireless network conforming to the Zigbee standard, or any combination thereof. In some embodiments, the wireless local area network module 107 may be connected to the cellular communication module 101 through a Universal Asynchronous Receiver / Transmitter (UART). In some embodiments, the cellular communication module 101 and the wireless local area network module 107 can cooperate with each other to convert the cellular network into a wireless local area network, so that the user terminal connected to the wireless local area network can be connected to the Internet via the cellular network.

[0047] In some embodiments, the vehicle-mounted terminal 100 may further include an eSIM card 108. The eSIM card 108 can be connected to the cellular communication module 101 and is used to store user identification information. It can be understood that the user identification information stored in the eSIM card 108 can be used by the cellular network operator to authenticate the user to determine whether the vehicle-mounted terminal 100 has the permission to access the cellular network and whether it has the permission to perform cellular network communication. In some embodiments, the eSIM card 108 may be a chip capable of storing user identification information.

[0048] In some embodiments, the vehicle-mounted terminal 100 may further include a second storage module 109. The second storage module 109 is connected to the cellular communication module 101 and is used to store data. In some embodiments, the second storage module 109 may include, for example, an eMMC memory, a flash storage chip, an SSD memory, etc. disposed in the vehicle-mounted terminal 100, or any combination thereof. The second storage module 109 may also be a TF card, an MMC card, an SD card, etc. disposed in the card slot of the vehicle-mounted terminal 100, or any combination thereof. In some embodiments, the second storage module 109 may be connected to the cellular communication module 101 through an SDIO (Secure Digital Input / Output) interface.

[0049] In some embodiments, the vehicle-mounted terminal 100 may further include a USB port 110. The USB port 110 is connected to the cellular communication module 101 and is used to realize data interaction between the cellular communication module 101 and an external device. In some embodiments, the cellular communication module 101 may be connected to the in-vehicle computer through the USB port 110 to realize data interaction.

[0050] In some embodiments, the vehicle-mounted terminal 100 may further include an audio codec module 120. The audio codec module 120 is connected to the cellular communication module 101 and is used for encoding and decoding audio data. When the cellular communication module 101 conducts a voice communication, the audio codec module 120 may convert the audio data received by the cellular communication module 101 into an audio signal, and output the audio signal to a speaker on the vehicle via the MIC OUT port; the audio codec module 120 may also convert the audio signal received by the MIC IN port (for example, collected by a microphone) into audio data, and send the audio data to the cellular communication module 101. The voice communication may include a voice call based on a cellular network, a voice message of instant communication based on the Internet, etc. When the vehicle-mounted terminal 100 plays multimedia, the audio codec module 120 may also convert the audio data in a multimedia file and / or a multimedia stream into an audio signal, and output the audio signal to a speaker on the vehicle. In some embodiments, the audio codec module 120 may be connected to the cellular communication module 101 through an I2S (Integrated Interchip Sound) interface.

[0051] In some embodiments, the microcontroller 102 is further connected to the main processor 103 and controls the actions of the main processor 103. It can be understood that the actions of the main processor 103 may be one or more of the functions it has. For example, the actions of the main processor 103 may be processing the image and / or video obtained by the rear-view camera device 113, such as encoding, compression, noise reduction, sharpening, etc. For another example, the actions of the main processor 103 may be reading from and writing to the memory 114 and the first storage module 115.

[0052] In some embodiments, the vehicle-mounted terminal 100 may further include a power amplifier module 121. The power amplifier module 121 is connected to the cellular communication module 101 and is configured to amplify the audio signal output by the cellular communication module 101 and output the amplified audio signal to a speaker through the SPK OUT port. The speaker may be the speaker of the vehicle-mounted terminal 100 or the speaker of the vehicle. In some embodiments, when an error occurs in the vehicle-mounted terminal 100, the cellular communication module 101 may issue an alarm audio signal, which is amplified by the power amplifier module 121 and then an audio alarm signal is emitted by the speaker. In some embodiments, when the vehicle-mounted terminal 100 plays multimedia, the cellular communication module 101 may convert the audio data in the multimedia file and / or multimedia stream into an audio signal, and the audio signal is amplified by the power amplifier module 121 and then output to the speaker on the vehicle. In some embodiments, the power amplifier module 121 is further connected to the microcontroller 102. The microcontroller 102 also controls the power amplifier module 121, for example, adjusts the gain of the power amplifier module 121. Preferably, the power amplifier module 121 is connected to the microcontroller 102 through an I2C (Inter-Integrated Circuit) bus.

[0053] In some embodiments, the vehicle-mounted terminal 100 may further include a memory 114. The memory 114 is connected to the main processor 103 and is configured to provide a temporary storage space for the data and / or instructions to be processed by the main processor 103. For example, the memory 114 may temporarily store the image data and / or video data acquired by the rear view camera device 113. Again, for example, the memory 114 may temporarily store the program instructions required by the main processor 103 to process the image data and / or video data, and the program instructions may be encoding, compression, noise reduction, sharpening, stitching, distortion correction, etc., or any combination thereof. The memory 114 may include, for example, dynamic RAM (DRAM), double data rate synchronous dynamic RAM (DDR SDRAM), static RAM (SRAM), thyristor RAM (T-RAM), zero capacitor RAM (Z-RAM), etc., or any combination thereof.

[0054] In some embodiments, the vehicle-mounted terminal 100 may further include a first storage module 115. The first storage module 115 is connected to the main processor 103 and is used for storing data. For example, the first storage module 115 may store the image data and / or video data acquired by the rear-view camera device 113. Also for example, the first storage module 115 may store the image data and / or video data processed by the main processor 103. In some embodiments, the first storage module 115 may include, for example, an eMMC memory, a flash memory chip, an SSD memory, etc. disposed within the vehicle-mounted terminal 100, or any combination thereof. The first storage module 115 may also be a TF card, an MMC card, an SD card, etc. disposed within the card slot of the vehicle-mounted terminal 100, or any combination thereof. In some embodiments, the first storage module 115 may be connected to the main processor 103 through an SDIO (Secure Digital Input / Output) interface.

[0055] In some embodiments, the vehicle-mounted terminal 100 may further include a power management module 116. The power management module 116 is connected to the main processor 103 and is used for performing power management on at least some of the components in the vehicle-mounted terminal 100 according to the instructions of the main processor 103. The components may be the cellular communication module 101, the main processor 103, the wireless local area network module 107, the second storage module 109, the camera device 111, the rear-view camera device 113, the first storage module 115, the microcontroller 102, etc.

[0056] In some embodiments, the vehicle-mounted terminal 100 may further include a Low-Voltage Differential Signaling (LVDS) port 117. The LVDS port 117 is connected to the main processor 103 and is used for realizing data interaction between the main processor 103 and an external device. In some embodiments, the main processor 103 may be connected to the in-vehicle computer through the LVDS port 117 to realize data interaction. For example, the image data and / or video data acquired by the rear-view camera device 113 may be sent to the in-vehicle computer for display, so as to assist the driver in observing the conditions around the vehicle.

[0057] In some embodiments, the vehicle-mounted terminal 100 further includes a data port 118. The data port 118 is connected to the microcontroller 102 and is used for realizing data interaction between the microcontroller 102 and an external device. Specifically, the ignition signal of the vehicle may be transmitted to the microcontroller 102 through the data port 118, thereby triggering the microcontroller 102 to start working.

[0058] In some embodiments, a display screen 122 may also be included. The display screen 122 is connected to the main processor 103 and is configured to display the images and / or videos acquired by the rear-view camera device 113. In some embodiments, the display screen 122 may be disposed in the interior rear-view mirror. The interior rear-view mirror may be an anti-glare interior rear-view mirror or an ordinary interior rear-view mirror.

[0059] In some embodiments, the vehicle-mounted terminal 100 further includes a power module 123. The power module 123 is connected to the vehicle's battery and, after converting the battery voltage, supplies power to the various components in the vehicle-mounted terminal 100.

[0060] As described above, the vehicle-mounted terminal 100 of the present invention has the functions of a T-Box, an intelligent gateway, and a streaming media rear-view mirror, forming a system controller with functions such as real-time presenting the situation behind the vehicle, expanding the rear-view field of view, reducing the rear-view blind area to improve driving safety, sharing vehicle bus information, managing and diagnosing faults in the vehicle internal network, collecting vehicle condition information, collecting driving behaviors and habits, and uploading data to the cloud. The vehicle-mounted terminal 100 can be implemented by a cellular communication module 101, a main processor 103, a microcontroller 102, a CAN transceiver 111, a rear-view camera device 113, and a power module 123. Compared with the technical solution implemented by combining the three module products of a T-Box, an intelligent gateway, and a streaming media rear-view mirror, the vehicle-mounted terminal 100 eliminates the main processor, microcontroller, power module, and peripheral circuits with overlapping functions, and has advantages such as making full use of resources, reducing occupied space, improving system interaction efficiency and reliability, and reducing the overall cost.

[0061] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in different ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

[0062] The various illustrative logical modules and circuits described in connection with the embodiments disclosed herein can be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0063] While the present invention has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes or substitutions can be made without departing from the spirit of the present invention. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the spirit of the present invention, they will fall within the scope of the claims of this application.

Claims

1. A vehicle-mounted terminal, characterized in that, Comprising: A main antenna for receiving and transmitting cellular wireless signals; A satellite navigation antenna for receiving satellite positioning signals; A cellular communication module respectively connected to the main antenna and the satellite navigation antenna for cellular network communication and satellite positioning; A diversity antenna connected to the cellular communication module for diversity reception and transmission of cellular wireless signals; A wireless local area network antenna for receiving and transmitting wireless local area network signals; A wireless local area network module respectively connected to the wireless local area network antenna and the cellular communication module for implementing wireless local area network communication; A rear-view camera device for acquiring images and / or videos of the rear of the vehicle; A main processor connected to the rear-view camera device for processing the images and / or videos acquired by the rear-view camera device and outputting the processed images and / or videos; A memory connected to the main processor for providing a temporary storage space for the data and / or instructions to be processed by the main processor; A CAN transceiver for receiving data on the CAN bus and / or sending data to the CAN bus; And A microcontroller respectively connected to the cellular communication module and the CAN transceiver for controlling the actions of the cellular communication module and performing protocol conversion on the data exchanged between the CAN transceiver and the cellular communication module; The microcontroller is also connected to the main processor, and the microcontroller is also used to control the actions of the main processor.

2. The vehicle-mounted terminal according to claim 1, characterized in that The vehicle-mounted terminal further includes: An Ethernet switch connected to the microcontroller for receiving and transmitting data packets conforming to the Ethernet protocol; wherein, the microcontroller is also used to perform protocol conversion on the data exchanged between any two of the CAN transceiver, the cellular communication module and the Ethernet switch.

3. The vehicle-mounted terminal according to claim 1, characterized in that The vehicle-mounted terminal further includes at least one of the following components: An eSIM card connected to the cellular communication module for storing user identification information; A first storage module connected to the main processor for storing data; A second storage module connected to the cellular communication module for storing data.

4. The vehicle-mounted terminal according to claim 1, characterized in that, The vehicle-mounted terminal further includes at least one of the following components: An audio codec module connected to the cellular communication module for encoding and decoding audio data; A power supply module for providing power to each component in the vehicle-mounted terminal; A power management module connected to the main processor for performing power management on at least a part of the components in the vehicle-mounted terminal according to the instructions of the main processor.

5. The vehicle-mounted terminal according to claim 1, characterized in that, The vehicle-mounted terminal further includes: A power amplifier module connected to the cellular communication module for amplifying the audio signal output by the cellular communication module and outputting the amplified audio signal to a speaker; wherein, the microcontroller also controls the power amplifier module.

6. The vehicle-mounted terminal according to claim 1, characterized in that, The vehicle-mounted terminal further includes at least one of the following components: A data port connected to the microcontroller for implementing data interaction between the microcontroller and an external device; A USB port connected to the cellular communication module for implementing data interaction between the cellular communication module and an external device; The LVDS port is connected to the main processor and is used to implement data interaction between the main processor and an external device.

7. The vehicle-mounted terminal according to claim 1, characterized in that The vehicle-mounted terminal further includes: A display screen, which is connected to the main processor and is used to display the images and / or videos acquired by the rear-view camera device.

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