Vehicle-mounted broadcasting terminal, vehicle-mounted broadcasting system and vehicle

Abstract

The utility model relates to a vehicle-mounted broadcasting terminal, a vehicle-mounted broadcasting system and a vehicle. Comprising a broadcast processing module and a microcontroller, the broadcast processing module is in communication connection with a vehicle-mounted antenna, and the microcontroller is connected with a multimedia host of a vehicle through a physical wire harness; the broadcast processing module comprises a baseband processor and a plurality of tuner interfaces; the broadcast processing module further comprises at least one tuner chip, and the at least one tuner chip is connected to one tuner interface. The microcontroller is used for triggering one of the at least one tuner chip to acquire a broadcast signal acquired by the vehicle-mounted antenna under the condition of receiving a control signal of the multimedia host, so that the tuner chip acquiring the broadcast signal performs tuning processing on the acquired broadcast signal to obtain an intermediate signal; the baseband processor is used for obtaining a broadcast audio according to the intermediate signal so as to send the broadcast audio to the microcontroller; and the microcontroller transmits the broadcast audio to the multimedia host.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicles, and in particular, to a vehicle-mounted broadcasting terminal, a vehicle-mounted broadcasting system and a vehicle. Background Art

[0002] At present, vehicles are usually equipped with broadcasting functions, such as digital broadcasting and analog broadcasting. In most cases, the broadcasting function is integrated into the multimedia host of the smart cockpit. The multimedia host is usually installed at the front of the vehicle. In order to ensure the quality of the broadcast, the antenna used to receive the broadcast can only be installed at the front of the vehicle, resulting in installation restrictions. In addition, in order to support multiple broadcasting formats, multiple broadcasting modules are also required. However, broadcasting modules (especially digital broadcasting modules) have the problems of high heat generation and slow heat dissipation, which makes them difficult to integrate into the limited motherboard of the multimedia host. Utility Model Content

[0003] The purpose of the present disclosure is to provide a vehicle-mounted broadcasting terminal, a vehicle-mounted broadcasting system and a vehicle, which can improve the installation flexibility of equipment required for broadcasting and facilitate the provision of more diverse broadcasting functions.

[0004] In order to achieve the above-mentioned object, according to a first aspect of the present disclosure, there is provided a vehicle-mounted broadcast terminal, comprising: a broadcast processing module and a microcontroller, wherein the broadcast processing module is communicatively connected to a vehicle-mounted antenna, and the microcontroller is connected to a multimedia host of the vehicle via a physical wiring harness;

[0005] The broadcast processing module includes a baseband processor and a plurality of tuner interfaces, the baseband processor is communicatively connected to the microcontroller, and each of the tuner interfaces is communicatively connected to the vehicle antenna, the baseband processor, and the microcontroller respectively; the broadcast processing module also includes at least one tuner chip, and each of the at least one tuner chip is connected to one of the tuner interfaces;

[0006] The microcontroller is used to trigger one of the at least one tuner chip to obtain the broadcast signal collected by the vehicle-mounted antenna when receiving the control signal of the multimedia host, so that the tuner chip that obtains the broadcast signal tunes the obtained broadcast signal to obtain an intermediate signal;

[0007] The baseband processor is used to obtain broadcast audio according to the intermediate signal, so as to send the broadcast audio to the microcontroller;

[0008] The microcontroller transmits the broadcast audio to the multimedia host.

[0009] Optionally, the at least one tuner chip includes a first type tuner chip for processing analog broadcast signals and / or a second type tuner chip for processing digital broadcast signals.

[0010] Optionally, the physical wiring harness is a USB wiring harness.

[0011] Optionally, the physical wiring harness is an Ethernet wiring harness;

[0012] The vehicle broadcast terminal further comprises a vehicle Ethernet physical layer chip, the vehicle Ethernet physical layer chip is connected to the vehicle Ethernet bus, and the vehicle Ethernet bus is connected to the multimedia host;

[0013] The microcontroller is connected to the vehicle-mounted Ethernet physical layer chip via the RMII bus so as to be connected to the multimedia host.

[0014] Optionally, the vehicle-mounted broadcast terminal further includes a power module, which is connected to the microcontroller and the vehicle-mounted power supply respectively;

[0015] The power module is used to supply power to the vehicle-mounted broadcast terminal through the vehicle-mounted power supply.

[0016] Optionally, the power supply module includes a main power supply unit and an auxiliary power supply unit, the main power supply unit is connected to the vehicle power supply and the auxiliary power supply unit respectively, and the auxiliary power supply unit is connected to the microcontroller;

[0017] The main power supply unit is used to filter and reduce the voltage of the vehicle-mounted power supply and output the voltage;

[0018] The auxiliary power supply unit is used to convert the voltage output by the main power supply unit into the working voltage of the vehicle-mounted broadcast terminal and output it to supply power to the vehicle-mounted broadcast terminal.

[0019] Optionally, when the physical wiring harness is a USB wiring harness, the power module is also connected to the VBUS of the USB wiring harness;

[0020] The power module is used to collect the voltage signal of VBUS through the USB harness;

[0021] The power module is also used to switch the power supply state of the vehicle-mounted broadcast terminal according to the voltage signal of the VBUS.

[0022] Optionally, the vehicle-mounted broadcast terminal further includes a storage module, which is connected to the broadcast processing module and the microcontroller respectively;

[0023] The storage module is used to store the firmware code corresponding to the broadcast processing module;

[0024] The microcontroller is used to update the firmware code stored in the storage module according to the firmware upgrade instruction when receiving the firmware upgrade instruction for the broadcast processing module, and control the storage module to initialize the broadcast processing module with the new firmware code after the update is completed.

[0025] According to a second aspect of the present disclosure, there is provided a vehicle-mounted broadcasting system, comprising:

[0026] The vehicle-mounted broadcast terminal according to the first aspect of the present disclosure;

[0027] A vehicle-mounted antenna connected to the vehicle-mounted broadcast terminal;

[0028] A multimedia host connected to the vehicle-mounted broadcast terminal.

[0029] Optionally, the vehicle-mounted broadcast terminal is connected to the multimedia host via a USB harness or an Ethernet harness.

[0030] Optionally, the number of the vehicle-mounted antennas is 1 or 2.

[0031] According to a third aspect of the present disclosure, a vehicle is provided, comprising the vehicle-mounted broadcasting system described in the second aspect of the present disclosure.

[0032] Through the above technical solution, the vehicle-mounted broadcast terminal provides broadcasting functions for the vehicle by connecting the vehicle-mounted antenna and the multimedia host, and based on its own broadcast processing module and microcontroller, without relying on the hardware of the multimedia host. In addition, since the vehicle-mounted broadcast terminal is provided with multiple tuner interfaces, one or more tuner chips can be installed. Based on this, different broadcasting requirements can be met by installing different numbers of tuner chips, without the need to adjust the remaining structures of the vehicle-mounted broadcast terminal. It can flexibly adapt to a variety of broadcasting requirements, and is easy to install and has low change costs. In addition, the vehicle-mounted broadcast terminal is connected to the multimedia host through a physical wiring harness. By adjusting the length of the physical wiring harness, the vehicle-mounted broadcast terminal can be set at any position in the vehicle. No matter where it is installed, the normal use of the broadcast function can be guaranteed due to the setting of the vehicle-mounted antenna. In this way, the vehicle-mounted broadcast terminal will not be restricted by the installation position, and the installation method is more flexible.

[0033] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0035] Figure 1is a structural block diagram of a vehicle-mounted broadcast terminal according to an exemplary embodiment;

[0036] Figure 2 is a structural block diagram of a vehicle-mounted broadcasting terminal according to another exemplary embodiment;

[0037] Figure 3 is a schematic diagram of an exemplary vehicle-mounted broadcast terminal;

[0038] Figure 4 It is a structural block diagram of a vehicle broadcasting system according to an exemplary embodiment.

[0039] Description of Reference Numerals

[0040] 100 Car radio terminals

[0041] 110 Broadcast Processing Module

[0042] 120 microcontroller

[0043] 111 Baseband Processor

[0044] 130 Power Module

[0045] 131 Main power supply unit

[0046] 132 Auxiliary power supply unit DETAILED DESCRIPTION

[0047] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0048] Figure 1 FIG. 1 is a structural block diagram of a vehicle-mounted broadcast terminal according to an exemplary embodiment. Figure 1 As shown, the vehicle-mounted broadcast terminal 100 includes: a broadcast processing module 110 and a microcontroller 120. The broadcast processing module 110 is connected to the vehicle-mounted antenna for communication, and the microcontroller 120 is connected to the vehicle's multimedia host through a physical wiring harness. The broadcast processing module 110 and the microcontroller 120 are connected to each other for communication.

[0049] The broadcast processing module 110 may include a baseband processor 111 and at least one tuner interface, the baseband processor 111 is communicatively connected to the microcontroller 120, and each tuner interface is communicatively connected to the vehicle antenna, the baseband processor 111, and the microcontroller 120. The broadcast processing module 110 also includes at least one tuner chip, and at least one tuner chip is respectively connected to one tuner interface.

[0050] It should be noted that in Figure 1In the figure, only one tuner interface is shown, and the setting mode of the other tuner interfaces is the same as the setting mode of the tuner interface shown. Figure 1 The figure shows the connection method of setting a tuner chip. For the vehicle-mounted broadcast terminal 100 providing multiple tuner interfaces, each tuner chip to be set is connected to a tuner interface respectively. If the number of tuner chips is less than the number of tuner interfaces, the remaining tuner interfaces do not need to be connected to devices.

[0051] The microcontroller 120 is used to trigger one of the at least one tuner chips to obtain the broadcast signal collected by the vehicle antenna when receiving the control signal from the multimedia host, so that the tuner chip that obtains the broadcast signal tunes the obtained broadcast signal to obtain an intermediate signal.

[0052] The baseband processor 111 is used for obtaining the broadcast audio according to the intermediate signal, so as to send the broadcast audio to the microcontroller 120 .

[0053] The microcontroller 120 transmits the broadcast audio to the multimedia host.

[0054] That is, the vehicle-mounted broadcast terminal 100 is connected to the vehicle-mounted antenna and the vehicle's multimedia host, and under the control of the multimedia host, obtains the broadcast signal collected by the vehicle-mounted antenna to provide a broadcast function for the vehicle.

[0055] Optionally, the multimedia host may be provided with an APP (Application) for controlling broadcasting, which may provide broadcasting control functions, including but not limited to: turning on broadcasting, turning off broadcasting, selecting or switching broadcasting formats, selecting or switching broadcasting channels, and searching for radio stations.

[0056] Optionally, the broadcast processing module 110 may also send radio station information such as radio station name, radio station list, radio station picture, etc. to the multimedia host, so that the multimedia host can display the above radio station information through the display interface of the APP.

[0057] In the vehicle-mounted broadcast terminal 100 provided in the present invention, a variety of broadcast formats can be provided for selection, and at least one of analog broadcast and / or digital broadcast can be provided. The broadcast formats provided in the present invention may include but are not limited to: DAB (Digital Audio Broadcasting), FM (Frequency Modulation), DAB MRC (Digital Audio Broadcasting Multiplex Reconfiguration), FM PD (FM Program Associated Data), HD radio (digital high definition broadcasting), and DRM (Digital Radio Mondiale).

[0058] The multimedia host can display the control interface of the APP on the screen, and the user can operate in the APP through the control interface to trigger the multimedia host to send a control signal to the microcontroller 120 to realize the above-mentioned broadcast control function. For example, the multimedia host can be a smart tablet. In the case of providing multiple broadcast formats, the vehicle-mounted broadcast terminal disclosed in the present invention can also realize the seamless switching function of broadcasting, such as including the same radio program under two broadcast formats, and switching to the other one for playback when the signal of one of them is poor. In this way, fast and automatic switching between broadcasts can be achieved, and the switching process has low delay, so that users are not easily aware of the switching process, thereby providing users with a good broadcast listening experience.

[0059] The broadcast processing module 110 can be connected to the vehicle antenna through a coaxial cable, thereby forming a connection between the vehicle broadcast terminal 100 and the vehicle antenna. The vehicle antenna can be a glass antenna, a ceramic antenna, etc. Optionally, if there are more than one vehicle antenna, some of the vehicle antennas can be used to collect broadcast signals, and the other vehicle antennas can be used to collect broadcast signals or to enhance signals. For example, if only one broadcast format configuration needs to be implemented, only one vehicle antenna can be used.

[0060] The broadcast processing module includes multiple tuner interfaces, each of which can be connected to a tuner chip. Therefore, through the multiple tuner interfaces of the broadcast processing module, one to multiple tuner chips (wherein the maximum number of installations is the total number of tuner interfaces included in the broadcast processing module) can be set in the vehicle broadcast terminal by connecting the tuner chips to the tuner interfaces. The tuner chip can be connected to the vehicle antenna by connecting to the tuner interface, so that the broadcast signal collected by the vehicle antenna can be obtained. At this time, all the signals collected by the vehicle antenna are obtained. In order to make the final broadcast audio meet the requirements of the control signal, it is necessary to further process it through the tuner chip and the baseband processor 111.

[0061] Among them, a tuner chip can provide at least one broadcasting standard. The tuner chip can be a Tuner chip, and a Tuner chip can support one or two broadcasting standards. For example, a radio frequency front-end Tuner chip can be used.

[0062] According to the needs of the actual scene, at least one tuner chip can be set in the vehicle-mounted broadcast terminal 100, that is, at least one tuner chip is connected to the tuner interface respectively. If the scene needs to support a large number of broadcast formats, a large number of tuner chips can be set; if the scene needs to support a small number of broadcast formats, a small number of tuner chips can be set. For example, if only one broadcast format needs to be supported, only one tuner chip can be set. For another example, if the tuner chip uses a Tuner chip, if 3 Tuner chips are set, up to 6 broadcast formats can be supported.

[0063] Optionally, at least one tuner chip includes a first type tuner chip for processing analog broadcast signals and / or a second type tuner chip for processing digital broadcast signals. That is, if the vehicle-mounted broadcast terminal 100 supports both broadcast formats belonging to digital broadcasting and broadcast formats belonging to analog broadcasting, at least one broadcast format belonging to digital broadcasting (or, belonging to analog broadcasting) can be set on the same tuner chip.

[0064] In order to better achieve compatibility with multiple broadcast formats, the vehicle-mounted broadcast terminal 100 can be set to use a unified PCB (Printed Circuit Board) and housing, and design circuits compatible with different patch devices, so that the vehicle-mounted broadcast terminal 100 can be compatible with different numbers of tuner chips. In this way, the number of tuner chips can be changed according to actual needs, thereby supporting broadcast formats in different combinations without changing the PCB. In this way, in the face of different broadcasting needs, the demand can be met by only changing the patch device (that is, only changing the number of tuner chips connected to the tuner interface), which is conducive to reducing the cost of change. Thus, different broadcasting requirements of high, medium and low ends can be met.

[0065] Optionally, the vehicle-mounted broadcast terminal 100 may use a metal shell to improve EMC (Electromagnetic Compatibility), and a thermal conductive material may be provided to increase the heat dissipation rate of each device (such as a chip) in the vehicle-mounted broadcast terminal 100 to ensure the device temperature. For example, a thermal conductive silicone may be provided between the metal shell and the PCB so that the increased temperature of the device can be quickly conducted to the metal shell through the thermal conductive silicone for heat dissipation.

[0066] In a possible embodiment, the physical wiring harness may be a USB (Universal Serial Bus) wiring harness, that is, the microcontroller 120 may be connected to the multimedia host via a USB wiring harness.

[0067] For example, the USB harness may use a shielded twisted pair cable, which is beneficial for reducing the impact of external interference signals on data transmission.

[0068] Optionally, considering the data transmission capacity of the USB harness (i.e., attenuation occurs during long-distance transmission or large data transmission), the length of the USB harness connecting the microcontroller 120 and the multimedia host can be set to be less than a specified length to ensure the effect of data transmission. For example, the specified length can be 1.5 m.

[0069] In another possible embodiment, the physical wiring harness may be an Ethernet wiring harness, that is, the microcontroller 120 may be connected to the multimedia host via the Ethernet wiring harness. In this embodiment, the vehicle-mounted broadcast terminal 100 may also include a vehicle-mounted Ethernet physical layer chip (Physical Layer, PHY), the vehicle-mounted Ethernet physical layer chip is connected to the vehicle-mounted Ethernet bus, and the vehicle-mounted Ethernet bus is connected to the multimedia host. The microcontroller 120 is connected to the vehicle-mounted Ethernet physical layer chip via an RMII (Reduced Media Independent Interface) bus to connect to the multimedia host.

[0070] For example, the microcontroller 120 may be connected to the multimedia host via a shielded line to reduce the impact of external interference signals on data transmission.

[0071] In actual application, the connection method between the microcontroller 120 and the multimedia host can be selected according to the actual scenario.

[0072] In a possible application scenario, if the vehicle antenna is close to the multimedia host and supports fewer types of broadcast formats (e.g., only FM), considering the short transmission distance, small amount of data, and low cost of the USB harness, the microcontroller 120 can be connected to the multimedia host via the USB harness, which can ensure the data transmission effect and reduce costs. For example, the USB1.1 or USB2.0 protocol can be used to transmit data (e.g., audio, pictures, etc.), and the CDC (Communication Device Class) protocol can be used to transmit instructions (e.g., switching radio commands, search commands, etc.).

[0073] In another possible application scenario, if the vehicle antenna is far from the multimedia host (e.g., the multimedia host is in the front row of the vehicle, and the vehicle antenna is set on the rear window), the microcontroller 120 can be set to be connected to the multimedia host through an Ethernet harness. The Ethernet connection has the advantages of low attenuation and low latency transmission, thereby ensuring the data transmission effect. Accordingly, the vehicle broadcast terminal 100 can be set near the vehicle antenna to ensure the signal reception effect.

[0074] When the microcontroller 120 receives a control signal from the multimedia host, it can trigger one of the at least one tuner chips to obtain the broadcast signal from the vehicle antenna according to the control signal. The control signal carries the configuration information of the broadcast and can indicate the working mode of the tuner chip (such as selecting the broadcast format, setting the frequency, adjusting the gain, demodulation parameters, etc.). Therefore, based on the control signal, the microcontroller 120 can send a trigger instruction to the tuner chip supporting the broadcast to trigger the tuner chip to obtain the broadcast signal from the vehicle antenna. For example, if the vehicle broadcast terminal 100 is provided with a tuner chip A1 that supports FM and a tuner chip A2 that does not support FM, then if the control signal received by the microcontroller 120 indicates that FM broadcast information is to be obtained, the microcontroller 120 can trigger the tuner chip A1 to obtain the broadcast signal without triggering the tuner chip A2 to work.

[0075] For example, the microcontroller 120 may be connected to the tuner chip via a SPI (Serial Peripheral Interface) to perform data transmission (eg, the trigger instruction described above).

[0076] The tuner chip that obtains the broadcast signal can tune the obtained broadcast signal to obtain an intermediate signal so that the intermediate signal meets the requirements of the control signal. For example, according to the configuration information carried by the control signal, the frequency is adjusted, demodulated, filtered, etc. to obtain the above intermediate signal.

[0077] After obtaining the intermediate signal, the tuner chip may transmit the obtained intermediate signal to the baseband processor 111 so that the baseband processor 111 can obtain the corresponding broadcast audio.

[0078] In a possible embodiment, if the tuner chip acquires an analog broadcast signal, the baseband processor 111 may perform analog demodulation to obtain the broadcast audio. For example, the tuner chip may transmit the intermediate signal to the baseband processor 111 via I2S (Inter-IC Sound, integrated circuit built-in audio bus).

[0079] In another possible embodiment, if the tuner chip acquires a digital broadcast signal, the baseband processor 111 may perform digital demodulation to obtain the broadcast audio. For example, the tuner chip may transmit the I signal (ie, the baseband signal) to the baseband processor 111.

[0080] Optionally, the baseband processor 111 may transmit the broadcast audio to the microcontroller 120 via I2S.

[0081] After receiving the broadcast audio, the microcontroller 120 can transmit the broadcast audio to the multimedia host via a USB cable or an Ethernet cable. The multimedia host can be connected to a speaker and play the obtained broadcast audio through the speaker.

[0082] In addition, the baseband controller can also be connected to the microcontroller 120 via SPI, and the baseband controller can transmit radio information such as radio station pictures, radio station lists, radio station pictures, etc. to the microcontroller 120 via SPI.

[0083] Alternatively, if Figure 2 As shown, the vehicle broadcast terminal 100 may further include a power module 130, which is connected to the microcontroller 120 and the vehicle power supply, respectively. The power module 130 may be used to supply power to the vehicle broadcast terminal 100 through the vehicle power supply.

[0084] For example, the vehicle power supply may be a 12V power supply. The power module 130 may convert the 12V power of the vehicle power supply into a voltage available to the vehicle broadcast terminal 100 for use by the vehicle broadcast terminal 100. For example, the voltage available to the broadcast terminal may be 1.8V, 3.3V, etc.

[0085] In a possible embodiment, the power supply module 130 may include a main power supply unit 131 and an auxiliary power supply unit 132, the main power supply unit 131 is connected to the vehicle power supply and the auxiliary power supply unit 132 respectively, and the auxiliary power supply unit 132 is connected to the microcontroller 120. The main power supply unit 131 is used to filter and reduce the voltage of the vehicle power supply and output the voltage. The auxiliary power supply unit 132 is used to convert the voltage output by the main power supply unit 131 into the working voltage of the vehicle broadcast terminal 100 and output it to power the vehicle broadcast terminal 100.

[0086] Among them, the main power supply unit 131 can filter and reduce the voltage of the vehicle power supply to eliminate the clutter and interference in the vehicle power supply, so that the main power supply unit 131 can output a stable and clean voltage. For example, the main power supply unit 131 can reduce the voltage of the vehicle power supply to 5V. For example, the filtering process can be implemented by a capacitor. For example, the voltage reduction process can be implemented by an inductor.

[0087] The auxiliary power supply unit 132 can obtain a stable voltage output after being processed by the main power supply unit 131, and can convert the voltage output by the main power supply unit 131 into the operating voltage of the vehicle-mounted broadcast terminal 100 (i.e., a voltage that enables the vehicle-mounted broadcast terminal 100 to work normally) and output it, such as outputting it to the microcontroller 120 to power the vehicle-mounted broadcast terminal 100.

[0088] Optionally, when the physical harness is a USB harness, that is, the microcontroller 120 is connected to the multimedia host via the USB harness, the power module 130 may also be connected to the VBUS (Voltage Bus, the voltage bus in the USB interface) of the USB harness.

[0089] The power module 130 is used to collect the voltage signal of VBUS through the USB harness;

[0090] The power module 130 is also used to switch the power supply state of the vehicle broadcast terminal 100 according to the voltage signal of VBUS.

[0091] When the microcontroller 120 is connected to the multimedia host through the USB harness, VBUS is controlled by the multimedia host. If the vehicle is turned off (or powered off), the multimedia host enters a dormant state (or is turned off), and VBUS also enters a closed state with no voltage signal; if the vehicle is turned on (or powered on), and the multimedia host is turned on, VBUS is in an open state with a voltage signal. Therefore, the presence or absence of the voltage signal of VBUS can reflect the on / off state of the multimedia host.

[0092] The power module 130 can collect the voltage signal of VBUS through the USB harness. For example, when the multimedia host is turned on, VBUS will output 5V electricity, and when the multimedia host is turned off, VBUS has no voltage output. Based on this, the working state of the multimedia host can be reflected by the voltage signal of VBUS. For example, the main power supply unit 131 of the power module 130 can collect the working signal of VBUS.

[0093] When the voltage signal of VBUS can be collected, it indicates that the multimedia host is turned on and the in-vehicle broadcast terminal 100 needs to work, so the power module 130 can supply power to the in-vehicle broadcast terminal 100 .

[0094] When the VBUS voltage signal cannot be collected, it indicates that the multimedia host is turned off or in sleep mode. At this time, the vehicle broadcast terminal 100 does not need to work, so the power module 130 can stop supplying power to the vehicle broadcast terminal 100 to reduce power consumption.

[0095] Based on this, the sleep and wake-up control of the vehicle-mounted broadcasting terminal can be realized, which can not only ensure the normal use of the broadcasting function but also reduce power consumption.

[0096] Optionally, the vehicle-mounted broadcast terminal 100 may further include a storage module, which is connected to the broadcast processing module 110 and the microcontroller 120 respectively.

[0097] The storage module is used to store the firmware code corresponding to the broadcast processing module 110;

[0098] The microcontroller 120 is used to update the firmware code stored in the storage module according to the firmware upgrade instruction when receiving the firmware upgrade instruction for the broadcast processing module 110, and control the storage module to initialize the broadcast processing module 110 with the new firmware code after the update is completed.

[0099] The firmware code corresponding to the broadcast processing module 110 may include a firmware code corresponding to the tuner chip and a firmware code corresponding to the baseband processor 111. The above firmware codes can enable the corresponding device to have basic data processing capabilities. For example, the firmware code corresponding to the tuner chip contains the operation and processing logic of the tuner chip.

[0100] Optionally, the storage module may be connected to the tuner chip, the baseband processor 111, and the microcontroller 120 via SPI to perform data transmission. For example, the storage module may be a Flash memory.

[0101] When the vehicle broadcast terminal 100 is awakened or reaches the code update cycle, a code synchronization instruction is generated, and then the storage module can send corresponding firmware codes to devices such as the tuner chip, baseband processor 111, and microcontroller 120.

[0102] Optionally, the microcontroller 120 can receive a firmware upgrade instruction for the broadcast processing module 110, and the firmware upgrade instruction can carry an upgrade package for updating the firmware code stored in the storage module. Then, the microcontroller 120 can update the firmware code stored in the storage module according to the firmware upgrade instruction, that is, write the data of the upgrade package into the storage module. After the update is completed, the microcontroller 120 can control the storage module to initialize the broadcast processing module 110 with the updated new firmware code so that the broadcast processing module 110 loads the updated firmware. Among them, the microcontroller can receive the above-mentioned firmware upgrade instruction with the upgrade package through the communication bus. By way of example, the communication bus can be a CAN (Controller Area Network) bus.

[0103] Based on this, the OTA (Over-the-Air Technology) upgrade function of the vehicle-mounted radio terminal can be realized.

[0104] Optionally, since the storage module is connected to multiple device chips (such as tuner chips, baseband processor 111, microcontroller 120, etc.), in order to avoid conflicts during the OTA upgrade process, after the microcontroller 120 receives the firmware upgrade instruction, the broadcast processing module 110 can be controlled to shut down first, so that it will not affect the microcontroller 120 writing data to the storage module (that is, updating the firmware code stored in the storage module). In addition, after the microcontroller completes writing the data of the upgrade package (that is, the update is completed), the interface of the storage module can be set to be suspended through software to avoid affecting the use of the storage module by the broadcast processing module 110. After that, the broadcast processing module 110 is initialized.

[0105] Optionally, the firmware code corresponding to the microcontroller 120 may be stored in an internal storage space of the microcontroller 120 .

[0106] Figure 3It is a schematic diagram of an exemplary vehicle-mounted radio terminal. Among them, three tuner chips T1, T2, and T3 are arranged in the vehicle-mounted radio terminal (the tuner interface is not shown in the figure). Among them, the vehicle-mounted radio terminal can be connected to the vehicle-mounted antenna through P1, P2, and P3, and connected to the vehicle-mounted power supply through P4. In addition, the vehicle-mounted radio terminal can also be connected to the multimedia host through a USB harness by P5, or can be connected to the multimedia host through an Ethernet harness by P6. In addition, when the vehicle-mounted radio terminal is connected to the multimedia host through a USB harness by P5, the vehicle-mounted radio terminal can also be connected to VBUS through P7.

[0107] Through the above technical solution, the vehicle-mounted broadcast terminal provides broadcasting functions for the vehicle by connecting the vehicle-mounted antenna and the multimedia host, and based on its own broadcast processing module and microcontroller, without relying on the hardware of the multimedia host. In addition, since the vehicle-mounted broadcast terminal is provided with multiple tuner interfaces, one or more tuner chips can be installed. Based on this, different broadcasting requirements can be met by installing different numbers of tuner chips, without the need to adjust the remaining structures of the vehicle-mounted broadcast terminal. It can flexibly adapt to a variety of broadcasting requirements, and is easy to install and has low change costs. In addition, the vehicle-mounted broadcast terminal is connected to the multimedia host through a physical wiring harness. By adjusting the length of the physical wiring harness, the vehicle-mounted broadcast terminal can be set at any position in the vehicle. No matter where it is installed, the normal use of the broadcast function can be guaranteed due to the setting of the vehicle-mounted antenna. In this way, the vehicle-mounted broadcast terminal will not be restricted by the installation position, and the installation method is more flexible.

[0108] Figure 4 FIG. 1 is a structural block diagram of a vehicle broadcasting system according to an exemplary embodiment. Figure 4 As shown, the vehicle broadcasting system may include the vehicle broadcasting terminal provided by any embodiment of the present disclosure, a vehicle antenna connected to the vehicle broadcasting terminal, and a multimedia host connected to the vehicle broadcasting terminal.

[0109] Optionally, the vehicle-mounted broadcast terminal may be connected to the multimedia host via USB or Ethernet.

[0110] Optionally, the number of vehicle-mounted antennas may be 1 or 2. For example, if the number of vehicle-mounted antennas is 1, the vehicle-mounted antenna is used as a receiving antenna to collect broadcast signals. For another example, if the number of vehicle-mounted antennas is 2, one of them may be used as a receiving antenna and the other may be used as an antenna for signal enhancement to ensure the reception effect of the broadcast signal.

[0111] Based on the same concept, the present disclosure also provides a vehicle, including the vehicle-mounted broadcasting system provided by any embodiment of the present disclosure.

[0112] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0113] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0114] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A vehicle-mounted broadcast terminal, characterized in that: include: A broadcast processing module and a microcontroller, wherein the broadcast processing module is communicatively connected to the vehicle antenna, and the microcontroller is connected to the vehicle's multimedia host via a physical wiring harness; The broadcast processing module includes a baseband processor and a plurality of tuner interfaces, the baseband processor is communicatively connected to the microcontroller, and each of the tuner interfaces is communicatively connected to the vehicle antenna, the baseband processor, and the microcontroller respectively; The broadcast processing module further comprises at least one tuner chip, each of the at least one tuner chip being connected to one of the tuner interfaces; The microcontroller is used to trigger one of the at least one tuner chip to obtain the broadcast signal collected by the vehicle-mounted antenna when receiving the control signal of the multimedia host, so that the tuner chip that obtains the broadcast signal tunes the obtained broadcast signal to obtain an intermediate signal; The baseband processor is used to obtain broadcast audio according to the intermediate signal, so as to send the broadcast audio to the microcontroller; The microcontroller transmits the broadcast audio to the multimedia host.

2. The vehicle-mounted broadcast terminal according to claim 1, characterized in that: The at least one tuner chip includes a first type tuner chip for processing analog broadcast signals and / or a second type tuner chip for processing digital broadcast signals.

3. The vehicle-mounted broadcast terminal according to claim 1, characterized in that: The physical wiring harness is a USB wiring harness.

4. The vehicle-mounted broadcast terminal according to claim 1, characterized in that: The physical wiring harness is an Ethernet wiring harness; The vehicle broadcast terminal further comprises a vehicle Ethernet physical layer chip, the vehicle Ethernet physical layer chip is connected to the vehicle Ethernet bus, and the vehicle Ethernet bus is connected to the multimedia host; The microcontroller is connected to the vehicle-mounted Ethernet physical layer chip via the RMII bus so as to be connected to the multimedia host.

5. The vehicle-mounted broadcast terminal according to claim 1, characterized in that: The vehicle-mounted broadcast terminal also includes a power module, which is connected to the microcontroller and the vehicle-mounted power supply respectively; The power module is used to supply power to the vehicle-mounted broadcast terminal through the vehicle-mounted power supply.

6. The vehicle-mounted broadcast terminal according to claim 5, characterized in that: The power supply module includes a main power supply unit and an auxiliary power supply unit, the main power supply unit is connected to the vehicle power supply and the auxiliary power supply unit respectively, and the auxiliary power supply unit is connected to the microcontroller; The main power supply unit is used to filter and reduce the voltage of the vehicle-mounted power supply and output the voltage; The auxiliary power supply unit is used to convert the voltage output by the main power supply unit into the working voltage of the vehicle-mounted broadcast terminal and output it to supply power to the vehicle-mounted broadcast terminal.

7. The vehicle-mounted broadcast terminal according to claim 5, characterized in that: In the case where the physical wiring harness is a USB wiring harness, the power module is also connected to the VBUS of the USB wiring harness; The power module is used to collect the voltage signal of VBUS through the USB harness; The power module is also used to switch the power supply state of the vehicle-mounted broadcast terminal according to the voltage signal of the VBUS.

8. The vehicle-mounted broadcast terminal according to claim 1, characterized in that: The vehicle-mounted broadcast terminal also includes a storage module, which is connected to the broadcast processing module and the microcontroller respectively; The storage module is used to store the firmware code corresponding to the broadcast processing module; The microcontroller is used to update the firmware code stored in the storage module according to the firmware upgrade instruction when receiving the firmware upgrade instruction for the broadcast processing module, and control the storage module to initialize the broadcast processing module with the new firmware code after the update is completed.

9. A vehicle broadcasting system, characterized in that: include: The vehicle-mounted broadcast terminal according to any one of claims 1 to 8; A vehicle-mounted antenna connected to the vehicle-mounted broadcast terminal; A multimedia host connected to the vehicle-mounted broadcast terminal.

10. The vehicle-mounted broadcasting system according to claim 9, characterized in that: The vehicle-mounted broadcast terminal is connected to the multimedia host via a USB harness or an Ethernet harness.

11. The vehicle-mounted broadcasting system according to claim 9, characterized in that: The number of the vehicle-mounted antennas is 1 or 2.

12. A vehicle, characterized in that: A vehicle-mounted broadcasting system comprising any one of claims 9-11.

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