CN211580188U

CN211580188U - Vehicle-mounted information entertainment system and vehicle

Info

Publication number: CN211580188U
Application number: CN202020622796.5U
Authority: CN
Inventors: 钱程
Original assignee: Dongsoft Group Dalian Co ltd; Neusoft Corp
Current assignee: Dongsoft Group Dalian Co ltd; Neusoft Corp
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-09-25
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses an on-vehicle infotainment system IVI and vehicle, this IVI includes: MCU, memorizer and Audio DSP. The MCU is respectively connected with the memory and the Audio DSP, and the Audio DSP is connected with a loudspeaker of a vehicle. The MCU is used for running the real-time operating system when the vehicle is started, acquiring first sound information from at least one piece of sound information prestored in the memory and sending the first sound information to the Audio DSP; and the Audio DSP is used for processing the first sound information, sending the first sound information to a loudspeaker and outputting corresponding sound by the loudspeaker. Therefore, the real-time operating system installed by the MCU is started faster than the non-real-time operating system installed on the CPU, and the memory for storing at least one piece of sound information is externally connected with the MCU, so that the IVI can rapidly output sound when the vehicle is started, and high-quality and intelligent services are provided for users.

Description

Vehicle-mounted information entertainment system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, In particular to a Vehicle-mounted information entertainment system (IVI for short) and a Vehicle.

Background

With the development of in-vehicle infotainment systems IVI, i.e. in-vehicle entertainment systems, a lot of information needs to be presented to the user in an intuitive form, e.g. played in the form of sound from the loudspeakers of the vehicle. At present, after a vehicle is started and an operating system on a Central Processing Unit (CPU) in an IVI is started, the CPU can transmit sound information to a speaker of the vehicle to make sound.

Generally, operating systems such as Android (english: Android) are mostly used in the CPU, and the startup of the Android operating system takes about 10 seconds. And many sounds need to be output quickly when the vehicle is started, for example: some abnormal state instrument alarm tones when the vehicle starts, for example: the sound of the simulated relay switch when the vehicle is started, for example: when the vehicle starts, the vehicle enters the IVI starting prompt tone, and the sounds are output after the vehicle starts and wait for the IVI CPU starting, so that the requirements of users on the sounds output when the vehicle starts cannot be met. Based on this, it is desirable to provide an IVI capable of rapidly outputting a sound and a vehicle including the IVI.

SUMMERY OF THE UTILITY MODEL

Based on the problem, the utility model provides a vehicle-mounted information entertainment system and vehicle to promote the speed of vehicle output sound when starting, thereby improve the user and experience the use of vehicle.

The embodiment of the utility model discloses following technical scheme:

in a first aspect, the present invention provides an in-vehicle infotainment system IVI, which IVI may specifically comprise: a Micro Control Unit (MCU), a memory and an Audio Digital Signal Processor (Audio Digital Signal Processor). The MCU is respectively connected with the memory and the Audio DSP, and the Audio DSP is connected with a loudspeaker of a vehicle to which the IVI belongs. The MCU is used for running a real-time operating system when a vehicle is started, acquiring first sound information from at least one piece of sound information prestored in the memory and sending the first sound information to the Audio DSP; and the Audio DSP is used for processing the first sound information and then sending the processed first sound information to the loudspeaker so as to drive the loudspeaker to output the sound corresponding to the first sound information.

Alternatively, the first sound information may be a vehicle start-up warning sound.

Optionally, the MCU is connected to a meter or a sensor of the vehicle; the MCU is also used for acquiring the state information of the instruments or sensors of the vehicle.

Optionally, the MCU may be specifically configured to: and acquiring the first sound information from at least one piece of sound information stored in the memory based on the state information, wherein the first sound information corresponds to the state information.

Optionally, the MCU is further configured to configure the operating mode of the Audio DSP to match the first voice message through a two-wire serial (I2C) bus.

Optionally, the MCU has an Inter-IC Sound (english: I2S for short) bus built in the integrated circuit; the MCU may specifically be configured to send the first Audio information to the Audio DSP via the I2S bus.

Optionally, the MCU may further include a timer if the MCU has a Serial Peripheral Interface (SPI for short), and at this time, the MCU may be specifically configured to send the first sound information to the Audio DSP through the SPI and the timer.

Optionally, the vehicle-mounted infotainment system further includes a power amplifier (english: power amplifier), where the power amplifier is connected between the Audio DSP and the speaker, and the power amplifier is configured to drive the speaker to play the sound corresponding to the first sound information.

Optionally, the Memory is a Read Only Memory (ROM).

Optionally, the in-vehicle infotainment system further comprises a central processing unit CPU,

the CPU is used for operating a non-real-time operating system after the vehicle is started, acquiring second sound information and sending the second sound information to the Audio DSP;

and the Audio DSP is further configured to process the second sound information and send the second sound information to the speaker, so that the speaker outputs sound corresponding to the second sound information.

Optionally, in the IVI, the model of the CPU may be MT2712, the model of the Audio DSP may be TEF6638, the model of the power amplifier may be TDA75610, the model of the MCU may be R7F7010283AFP, and the model of the ROM may be IS25LQ 032B.

In a second aspect, the present invention further provides a vehicle comprising the vehicle infotainment system of the first aspect, the vehicle further comprising a speaker;

the vehicle-mounted infotainment system is used for processing sound information and then sending the processed sound information to the loudspeaker when a vehicle is started;

and the loudspeaker is used for outputting the sound corresponding to the sound information.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in provide a set up the on-vehicle infotainment system IVI on the vehicle, this IVI specifically can include: MCU, memorizer and Audio DSP. The MCU is respectively connected with the memory and the Audio DSP, and the Audio DSP is connected with a loudspeaker of a vehicle to which the IVI belongs. The MCU is used for running a real-time operating system when a vehicle is started, acquiring first sound information from at least one piece of sound information prestored in the memory and sending the first sound information to the Audio DSP; the Audio DSP is used for processing the first sound information and then sending the first sound information to the loudspeaker, and the loudspeaker outputs the sound corresponding to the first sound information.

Like this, this IVI can be with the help of the real-time operating system of MCU installation, real-time operating system has the fast characteristics of start, and, through the external memory of MCU and save at least one piece of sound information that needs the broadcast in this memory, realize that MCU can be very fast when the vehicle starts the real-time operating system on it, read sound information fast from the memory and broadcast, make the IVI of vehicle need not wait for on the CPU non-real-time operating system start can be quick output sound, provide higher quality and intelligent service for the user. Additionally, the utility model provides a vehicle that contains above-mentioned IVI still provides, and the speaker on this vehicle can just be based on the drive of IVI when the vehicle starts, and some sounds that user needs such as quick broadcast vehicle start prompt tone or some warning prompt tones improve the user and experience the use of this vehicle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an IVI 200 according to an embodiment of the present invention;

fig. 2 is a schematic connection diagram of an SPI analog I2S bus according to an embodiment of the present invention;

fig. 3 is a timing diagram of an SPI emulation I2S bus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a vehicle 400 according to an embodiment of the present invention.

Detailed Description

At present, vehicles are generally provided with a vehicle-mounted infotainment system IVI, and the IVI adopts a vehicle-mounted special CPU and a vehicle-mounted comprehensive information processing system formed on the basis of a vehicle body bus system and internet services. This IVI can realize including a series of functions such as three-dimensional navigation, real-time road conditions, driver assistance, fault detection, the vehicle electronization, networking and the intelligent level of very big promotion.

Wherein, the IVI of vehicle can be intelligent the speaker broadcast sound of this vehicle of drive. In specific implementation, after a vehicle is started and an operating system on a CPU in an IVI is started, the CPU can transmit sound information to a speaker of the vehicle to make a sound. Since the startup of the operating system on the CPU on the IVI takes approximately 10 seconds, i.e., at least 10 seconds have elapsed since the start of the vehicle to output the sound to the user. However, some sounds need to be played to the user when the vehicle is started, otherwise the meaning of playing the sounds is lost, and the experience of the user using the vehicle is greatly reduced, for example: the start-up entry prompt tone for entering the IVI at vehicle start-up, for example, is again: the alarm prompt tone of some abnormal meters when the vehicle is started. As can be seen, IVI currently does not meet the user's demand for rapid sound output when the vehicle is started.

Based on this, the inventor has studied and proposed an in-vehicle infotainment system IVI disposed on a vehicle, which IVI may specifically include: MCU, memorizer and Audio DSP. The MCU is respectively connected with the memory and the Audio DSP, and the Audio DSP is connected with a loudspeaker of a vehicle to which the IVI belongs. The MCU is used for running a real-time operating system when a vehicle is started, acquiring first sound information from at least one piece of sound information prestored in the memory and sending the first sound information to the Audio DSP; the audioDSP is used for processing the first sound information, sending the processed first sound information to the loudspeaker, and outputting the sound corresponding to the first sound information by the loudspeaker.

Therefore, the real-time operating system is installed by the aid of the MCU, the real-time operating system is started faster than the non-real-time operating system installed on the CPU, the MCU is connected with the external memory and stores at least one piece of sound information to be played in the memory, the real-time operating system on which the MCU can operate quickly when the vehicle is started is realized, the sound information is read quickly from the memory and played, the sound can be output quickly without waiting for the start of the non-real-time operating system on the CPU by the IVI of the vehicle, and high-quality and intelligent services are provided for users. For the vehicle comprising the IVI, the loudspeaker on the vehicle can quickly play some sounds required by the user, such as vehicle starting prompt tones or some warning prompt tones and the like, based on the driving of the IVI when the vehicle is started, so that the use experience of the user on the vehicle is improved.

In order to make the technical solution of the present invention better understood, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 1 shows a schematic structural diagram of an in-vehicle infotainment system IVI 200 according to an embodiment of the present invention. Referring to fig. 1, the IVI may include at least an MCU210, a memory 220, and an AudioDSP 230. The MCU210 is connected to the memory 220, the MCU210 is also connected to the Audio DSP230, and the Audio DSP230 is connected to the speaker 120 of the vehicle to which the IVI 200 belongs.

The MCU210 is configured to run a real-time operating system when a vehicle is started, obtain first sound information from at least one piece of sound information pre-stored in the memory 220, and send the first sound information to the Audio DSP 230;

the Audio DSP230 is configured to process the first sound information and send the processed first sound information to the speaker 120, so as to drive the speaker 120 to output a sound corresponding to the first sound information.

The MCU210 is installed with a real-time operating system, for example: industrial Real-Time operating System (IRTON) center. The real-time operating system on the MCU210 is started quickly, and usually within 1 second. Thus, the instrument and the sensor on the vehicle are started after the ignition of the vehicle is started for about 1 second, at this time, the real-time operating system on the MCU210 is also started successfully, and the MCU210 can quickly acquire the sound information to be played from the memory 220 and send the sound information to the Audio DSP230, so as to quickly play the sound to be played to the user.

The memory 220 may be specifically a ROM, and is used for storing at least one piece of sound information. The at least one piece of sound information may specifically include: vehicle start alert tones (i.e., a start entry alert tone for entry into IVI when the vehicle is started), alarm alert tones for some abnormal status instruments or sensors when the vehicle is started, sounds simulating a relay switch when the vehicle is started, etc. The memory 220 may store a file in the format of wav or mp3, in which at least one piece of sound information is stored.

The memory 220 and the MCU210 are connected through the SPI, and the MCU210 reads the first sound information to be played from the memory 220 through the SPI.

As one example, the first sound information may be a vehicle start prompt tone when the vehicle starts.

As another example, the first sound information may also be a sound simulating a relay switch or an alarm tone of a meter or sensor in an abnormal state when the vehicle is started. In this example, the MCU210 may also be connected to the meters 130 or sensors 140 of the vehicle, for example: the MCU210 is connected to the meters 130 or sensors 140 of the vehicle through a Controller Area Network (CAN) bus; then, at the time of vehicle start, the MCU210 is further configured to acquire status information of the meter 130 or the sensor 140 of the vehicle, and acquire the first sound information from at least one piece of sound information stored in the memory 220 based on the status information, the first sound information corresponding to the status information. The state information may specifically include, but is not limited to, at least one of the following information: a reading of the meter 130 or a value of the sensor 140, information indicating whether the reading of the meter 130 is abnormal or not, or information indicating whether the value of the sensor 140 is abnormal or not. The status information is used to characterize the status of the indicator corresponding to the meter 130 or the sensor 140.

For example: when the vehicle starts, the meter 130 displays that the oil amount is lower than the threshold value, then, the MCU210 can obtain the state information 1 from the meter 130, and determine that the oil amount is too low through the state information 1, at this time, the MCU210 obtains the warning prompt tone 1 for prompting that the oil amount is too low from at least one piece of preset sound information in the memory 220, and plays the sound corresponding to the prompt tone 1 after sending the warning prompt tone 1 to the AudioDSP 230, thereby achieving the effect of prompting that the oil amount is too low for the user. Wherein, for the status information 1, in one case, the status information 1 is the current oil amount value, and the MCU210 can determine that the oil amount is too low based on the current oil amount value; in another case, the status information 1 is low oil quantity abnormality indication information, and the MCU210 may determine that the oil quantity is too low based on the low oil quantity abnormality indication information; in still another case, the state information 1 includes the current oil amount value and the low oil amount abnormality indication information, and the MCU210 may determine that the oil amount is too low based on the state information 1.

It should be noted that, in at least one piece of sound information in the memory 220, each piece of sound information corresponds to a playing scene, and in a specific implementation, the MCU210 may specify the playing scene when acquiring the first sound information from the memory 220, so as to acquire the corresponding first sound information in a targeted manner.

The Audio DSP230 is configured to perform non-programmable Audio processing on the sound information sent by the MCU210, such as: and (5) coding and decoding the sound information. As an example, if the requirements for the effect of playing the sound are low, the Audio DSP230 may be replaced with a low cost Audio Codec (English). It should be noted that, as long as the Audio signal can be encoded and decoded to ensure the output thereof, the Audio signal can be placed between the MCU210 and the speaker 120, and the Audio DSP230 is taken as an example in the present invention for explanation.

For the connection between the MCU210 and the Audio DSP 230:

in one aspect, MCU210 is connected to Audio DSP230 via I2C bus for configuring the operating mode of Audio DSP230 via I2C bus so that Audio DSP230 matches the first voice message. The working mode of the Audio DSP230 specifically means a sampling rate and an alignment mode (left alignment or right alignment) of the Audio DSP230 for receiving the Audio information, the CPU210 may configure, through the I2C bus, that the sampling rate of the Audio DSP230 is consistent with the sampling rate of the first Audio information, and configure that the alignment mode of the Audio DSP230 is consistent with the alignment mode of the first Audio information, thereby ensuring that the Audio DSP230 can accurately receive the first Audio information, and providing a precondition for accurate playing of subsequent Audio.

On the other hand, the MCU210 is connected to the Audio DSP230 through an I2S bus for transmitting first voice information to the Audio DSP230 through an I2S bus. In one case, if the MCU210 has an I2S interface, the MCU210 transmits the first sound information to the Audio DSP230 through an I2S bus, as shown in fig. 1. Alternatively, if the MCU210 does not have an I2S interface but has an SPI interface, the MCU210 may emulate the function of an I2S bus through the built-in timer 211, i.e., the MCU210 may transmit the first voice message to the Audio DSP230 through the SPI and the timer 211. Therefore, considering that most of the MCUs have the SPI and at least have one timer function, the simulation of the I2S bus is realized by using the SPI and the timer, and the universality of the utility model is improved; furthermore, the MCU also uses the I2C bus to set the I2S format and frequency received by the Audio DSP230, which also increases the versatility of the present invention. Therefore, the sound signal can be played in the mode without limiting the type of the MCU.

Wherein the value of the timer 211 matches the sampling rate of the first sound information.

For the function of simulating the I2S bus by the built-In Timer 211 of the MCU210, specifically, see fig. 3, the SPI _ CLK output terminal of the MCU210 is connected to the I2S _ BCLK of the Audio DSP230 and the capture interface Timer _ Cap of the Timer 211, respectively, the output terminal of the Timer 211 is connected to the I2S _ FS of the Audio DSP230 through the general purpose input/output GPIO of the MCU210, the SPI _ DataOut of the MCU210 is connected to the I2S _ Data _ In of the Audio DSP230, and the MCU210 is connected to the Audio DSP230 through the I2C bus. Assuming that the data set by the timer is N, the timing diagram of the pins on the MCU210 and the Audio DSP230 can be seen in fig. 3, and the transmission manner of the SPI can be seen from the timing diagram, and the purpose that the I2S bus needs the I2S _ FS clock signal to distinguish the sound information of the left channel from the sound information of the right channel is achieved by setting the value of the timer. As can be seen, the MCU210 simulates the I2S _ FS clock signal accurately and simulates the complete I2S bus by using the Timer _ Cap of the Timer 211 and a general purpose GPIO interface.

For example: assuming that the receiving format of the Audio DSP230 is to transmit 8KHz sampling rate, 16bit Audio information for each of the left and right channels, the frequency of I2S _ BCLK is set to 8 × 16 × 2 — 256KHz, the SPI _ CLK of the MCU210 is set to 256KHz, and the SPI _ DataOut output format is set to 16 × 2 — 32bit, which can satisfy the requirements of the Audio DSP230 for I2S _ BCLK and I2S _ Data _ In. When the MCU210 does not have an I2S interface and the SPI interface thereof cannot directly generate an I2S _ FS clock signal, the MCU210 may use the capture function of the Timer 211 to connect the SPI _ CLK signal to the capture pin Timer _ Cap of the Timer 211 of the MCU210, sample the rising edge of the SPI _ CLK signal using the Timer _ Cap pin, capture the Timer _ Cap pin 16 times every time the SPI _ DataOut outputs 16 bits of Audio information, and flip the level of any GPIO output pin of the MCU210 after the Timer overflow generates an interrupt, thereby generating an I2S _ FS clock signal of 8kHz required by the Audio DSP 230.

In some possible implementations, the IVI 200 may further include a power amplifier 240, where the power amplifier 240 is connected between the Audio DSP230 and the speaker 120, and the power amplifier 240 drives the speaker 120 to play the sound corresponding to the first sound information.

In a specific implementation, the MCU210 reads the binary first Audio information from the memory 220 and outputs the binary first Audio information to the Audio DSP230 in the format of I2S, the Audio DSP230 performs Audio processing such as Audio amplification on the first Audio information in the format of I2S, converts the processed Audio information into an analog signal and outputs the analog signal to the power amplifier 240, and the power amplifier 240 drives the speaker 120 to play the Audio corresponding to the first Audio information.

In addition, after the vehicle starts and the non-real-time operating system on the CPU is started, if there is sound to be played, in addition to the above playing path, the IVI 200 of the present invention may further include a CPU 250, and the CPU 250 operates the non-real-time operating system after the vehicle starts to obtain the second sound information and send the second sound information to the Audio DSP 230; the Audio DSP230 may be further configured to process the second sound information and send the second sound information to the speaker 120, so that the speaker 120 outputs a sound corresponding to the second sound information. And the second sound information is the sound information which is determined to be played to the user according to the real-time vehicle condition after the vehicle is started and the non-real-time operating system on the CPU is started. Therefore, the IVI can quickly and flexibly play the sound required by the user, and the use experience of the user on the vehicle is improved.

It should be noted that the first sound information may be a sound that needs to be output to the user quickly when the vehicle is started, the second sound information may be a sound that needs to be output to the user during the operation process after the vehicle is started, and the first sound information and the second sound information may be the same or different. For example: the first sound information may be sound information 1 for prompting the user that the battery level of the vehicle is too low when the vehicle is started, and the second sound information may be sound information 1 for prompting the user that the battery level of the vehicle is too low when the vehicle is driven. Another example is: the first sound information may be an IVI start prompt tone 2 emitted when the vehicle is started, and the second sound information may be a sound information 3 emitted during driving to prompt the user that the seat belt is not fastened.

As an example, in the IVI 200, the CPU 250 may be of the MT2712 model, the Audio DSP230 may be of the TEF6638 model, the power amplifier 240 may be of the TDA75610 model, the MCU210 may be of the R7F7010283AFP model, and the memory 220 may be of the IS25LQ032B model.

It can be seen, the utility model provides an IVI, can be with the help of the real-time operating system of MCU installation, real-time operating system has the characteristics that start fast, and, through the external memory of MCU and save an at least sound information that needs the broadcast in this memory, realize that MCU can be very fast when the vehicle starts the operation real-time operating system above that, read sound information fast and broadcast in the follow memory, make the IVI of vehicle need not wait for CPU on the non-real-time operating system start can be quick output sound, provide higher-quality and intelligent service for the user.

In addition, referring to fig. 4, the present invention further provides a vehicle 400, wherein the vehicle 400 includes the IVI 200 shown in fig. 1 and the speaker 120, wherein the IVI 200 is configured to process the sound information and send the processed sound information to the speaker 120 when the vehicle 400 is started; the speaker 120 is configured to output a sound corresponding to the sound information.

As an example, when the IVI 200 is not started completely by the non-real-time operating system on the CPU of the IVI 200 after the vehicle is started, since the real-time operating system of the MCU has already been started quickly, the MCU may read the information of the sound to be played from the memory and send it to the Audio DSP for processing, and then drive the speaker 120 to play the sound. When the IVI 200 is started in the vehicle and the non-real-time operating system on the CPU of the IVI 200 is started, the MCU or the CPU may send the Audio information to be played to the Audio DSP for processing and then drive the speaker 120 to play the Audio.

In this way, the speaker 120 on the vehicle 400 can play some sounds required by the user, such as a vehicle 400 start prompt tone or some warning prompt tones, quickly (for example, 1 second) based on the driving of the IVI 200 when the vehicle 400 starts, so as to improve the user experience of the vehicle 400.

It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. The above-described system embodiments are merely illustrative, and the units described as separate components may or may not be physically separate, and the components suggested as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

The above description is only one specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An in-vehicle infotainment system, comprising: the vehicle-mounted information entertainment system comprises a Micro Control Unit (MCU), a memory and a digital signal processor (Audio DSP), wherein the MCU is respectively connected with the memory and the Audio DSP, and the Audio DSP is connected with a loudspeaker of a vehicle to which the vehicle-mounted information entertainment system belongs;

the MCU is used for running a real-time operating system when a vehicle is started, acquiring first sound information from at least one piece of sound information prestored in the memory and sending the first sound information to the Audio DSP;

and the Audio DSP is used for processing the first sound information and then sending the processed first sound information to the loudspeaker so as to drive the loudspeaker to output the sound corresponding to the first sound information.

2. The in-vehicle infotainment system of claim 1, characterized in that the first acoustic message is a vehicle start-up warning tone.

3. The in-vehicle infotainment system of claim 1, characterized in that the MCU is connected to the meters or sensors of the vehicle;

and the MCU is also used for acquiring the state information of the instrument or the sensor of the vehicle.

4. The in-vehicle infotainment system of claim 3, characterized in that the MCU is specifically configured to:

and acquiring the first sound information from at least one piece of sound information stored in the memory based on the state information, wherein the first sound information corresponds to the state information.

5. The in-vehicle infotainment system of any one of claims 1 to 4, characterized in that the MCU is further configured to configure the operating mode of the Audio DSP via the I2C bus to match the first voice information.

6. The in-vehicle infotainment system according to any one of claims 1 to 4, characterized in that the MCU has an I2S interface;

the MCU is specifically configured to send the first Audio information to the Audio DSP via an I2S bus.

7. The in-vehicle infotainment system according to any one of claims 1 to 4, characterized in that the MCU has an SPI, a timer being included in the MCU;

and the MCU is specifically used for sending the first sound information to the Audio DSP through the SPI and the timer.

8. The in-vehicle infotainment system of claim 1, further comprising a power amplifier connected between the Audio DSP and the speaker,

the power amplifier is used for driving the loudspeaker to play the sound corresponding to the first sound information.

9. The in-vehicle infotainment system according to claim 1, characterized in that the in-vehicle infotainment system further comprises a central processing unit CPU,

10. A vehicle comprising the in-vehicle infotainment system of any one of claims 1 to 9, the vehicle further comprising a speaker;

the vehicle-mounted infotainment system is used for processing sound information and then sending the processed sound information to the loudspeaker when the vehicle is started;