Vehicle audio playing method, player, vehicle system and storage medium

Abstract

The application relates to the field of vehicle-mounted systems and discloses a vehicle-mounted audio playing method, a player, a vehicle-mounted system and a storage medium. The player comprises a vehicle-mounted power amplifier circuit, a control unit, a first codec, a second decoder, a channel switching switch and an AUX interface. After receiving audio data through the AUX interface, the control unit determines a corresponding working mode according to user operation information, controls the channel switching switch to be adjusted to the corresponding working mode based on the working mode, and selects the first codec or the second decoder to process and output audio according to different working modes, so that audio with a corresponding sound quality is output according to different requirements of users, over-processing of the audio is avoided, distortion is avoided, and the experience of users on the vehicle-mounted system is affected.

Description

Technical Field

[0001] This invention relates to the field of vehicle systems, and more particularly to a vehicle audio playback method, player, vehicle system, and storage medium. Background Technology

[0002] With the development of automotive technology, setting up audio playback functionality in cars is a feature that can enhance the user's driving experience, especially by allowing users to connect their mobile phones to the vehicle's driving system for audio playback.

[0003] Currently, mobile devices and cars primarily rely on Bluetooth or wired connections for audio playback. For wired audio transmission, existing technologies mainly use adapter cables to connect to the car's AUX (Auxiliary) input interface. However, before outputting the analog audio signal, the mobile device or audio player requires amplification or EQ (equilibrium) processing. After the car receives the audio from the mobile device, it undergoes further amplification and EQ processing by the car's internal amplifier. Therefore, in existing solutions, playing audio from a mobile device through a car involves this double processing, which can lead to over-processing and distortion, significantly impacting sound quality and user experience. Summary of the Invention

[0004] The main objective of this invention is to solve the problem of audio signal distortion that occurs when a mobile terminal plays audio in a car via the car's AUX interface in the prior art.

[0005] The first aspect of this invention provides a car audio player, comprising: a car amplifier circuit, a control unit, a first codec, a second decoder, a channel switch, and an AUX interface; the AUX interface is connected to the channel switch and is used to receive audio data sent by a user terminal; the control unit is connected to the channel switch, the first codec, and the second decoder respectively, and is used to determine a corresponding operating mode according to user operation information, and control the channel switch based on the operating mode to connect the AUX interface to one of the control unit, the first codec, and the second decoder; the first codec is used to encode and decode the audio data to obtain a first audio signal, and output it to the car amplifier circuit through the control unit; the second decoder is used to perform Hi-Fi processing on the audio data.

[0006] (High-Fidelity) decoding is used to obtain a second audio signal, which is then output to the vehicle power amplifier circuit through the control unit. The vehicle power amplifier circuit is used to amplify and filter the audio data, the first audio signal, or the second audio signal before playback.

[0007] Optionally, in a first implementation of the first aspect of the present invention, the control unit is further configured to acquire user operations on the UI (User Interface) operation interface of the vehicle system or user operations on the buttons of the vehicle system, and determine a corresponding working mode based on the operations, wherein the working mode includes a first working mode, a second working mode and a third working mode.

[0008] Optionally, in a second implementation of the first aspect of the present invention, if the working mode is the first working mode, the control unit controls the path switching switch to connect the communication connection between the AUX interface and the first codec; if the working mode is the second working mode, the control unit controls the path switching switch to connect the communication connection between the AUX interface and the second decoder; if the working mode is the third working mode, the control unit controls the path switching switch to connect the communication connection between the AUX interface and the control unit.

[0009] Optionally, in a third implementation of the first aspect of the present invention, the first working mode is an AUX interface mode, the second working mode is a headphone mode, and the third working mode is a general input / output mode.

[0010] Optionally, in a fourth implementation of the first aspect of the present invention, the vehicle power amplifier circuit and the control unit are connected via a USB (Universal Serial Bus) bus.

[0011] A second aspect of the present invention provides a vehicle audio playback method applied to the aforementioned vehicle player. The vehicle audio playback method includes: receiving audio data sent by a user terminal through the AUX interface and detecting the current operating mode of the vehicle player; if the operating mode is a first operating mode, encoding and decoding the audio data to obtain a first audio signal and outputting it to the vehicle power amplifier circuit; if the operating mode is a second operating mode, decoding the audio data using a HIFI decoding DAC (Digital to Analog Converter) to obtain a second audio signal and outputting it to the vehicle power amplifier circuit; if the operating mode is a third operating mode, directly outputting the audio data to the vehicle power amplifier circuit; and playing the audio data, the first audio signal, or the second audio signal after amplification and filtering by the vehicle power amplifier circuit.

[0012] Optionally, in a first implementation of the second aspect of the present invention, detecting the current operating mode of the in-vehicle player includes: after starting the audio player, detecting whether the audio player is in a third operating mode; if so, detecting whether there is operation information on the UI operation interface of the in-vehicle system; if so, switching the third operating mode to a first operating mode or a second operating mode based on the operation information; if not, performing the step of directly outputting the audio data to the in-vehicle power amplifier circuit.

[0013] A third aspect of the present invention provides a control device for a vehicle system, the control device comprising:

[0014] The system includes a detection module for receiving audio data sent by a user terminal via the AUX interface and detecting the current operating mode of the vehicle system; a first output module for encoding and decoding the audio data to obtain a first audio signal and outputting it to the vehicle amplifier circuit when the operating mode is the first operating mode; a second output module for decoding the audio data using a HiFi decoder DAC to obtain a second audio signal and outputting it to the vehicle amplifier circuit when the operating mode is the second operating mode; a third output module for directly outputting the audio data to the vehicle amplifier circuit when the operating mode is the third operating mode; and a playback module for amplifying and filtering the audio data, the first audio signal, or the second audio signal through the vehicle amplifier circuit before playback.

[0015] Optionally, in a first implementation of the third aspect of the present invention, the detection module includes: a first detection unit, configured to detect whether the audio player is in a third working mode after the audio player is started; a second detection unit, configured to detect whether there is operation information on the UI operation interface of the vehicle system if so; a switching unit, configured to switch the third working mode to the first working mode or the second working mode based on the operation information if so; and an output unit, configured to execute the step of directly outputting the audio data to the vehicle power amplifier circuit if not so.

[0016] A fourth aspect of the present invention provides an in-vehicle system, characterized in that the in-vehicle system includes: a memory and at least one processor, the memory storing instructions, the memory and the at least one processor being interconnected via a circuit; the at least one processor invokes the instructions in the memory to cause the in-vehicle system to perform the various steps of the above-described in-vehicle audio playback method.

[0017] A fifth aspect of the present invention provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the steps of the above-described in-vehicle audio player method.

[0018] After receiving audio data through the AUX interface, the control unit determines the corresponding working mode based on the user's operation information, and adjusts the control path switching switch to the corresponding working mode based on the working mode. Depending on the different working modes, the first codec or the second decoder is selected to process and output the audio, thereby realizing the output of audio with corresponding sound quality according to different user requirements, avoiding the distortion caused by excessive audio processing, which would affect the user's experience with the in-vehicle system. Attached Figure Description

[0019] Figure 1 This is a first flowchart of an in-vehicle audio playback method provided in an embodiment of the present invention;

[0020] Figure 2 This is a second flowchart of the in-vehicle audio playback method provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of a first structure of an in-vehicle audio player provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the control device in the vehicle system provided in an embodiment of the present invention.

[0023] Figure 5 This is another structural schematic diagram of the control device in the vehicle system provided in the embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of a vehicle-mounted system provided in an embodiment of the present invention. Detailed Implementation

[0025] This invention provides an in-vehicle playback method, an in-vehicle player, an in-vehicle system, and a storage medium.

[0026] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” or “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 The first embodiment of the in-vehicle audio playback method in this invention includes:

[0028] 101. Receive audio data sent by the user terminal through the AUX interface and detect the current working mode of the in-vehicle player;

[0029] It's important to note that AUX is an additional signal line design. In general audio equipment, in addition to the standard input and output terminals, there are often input / output terminals labeled "AUX" as backup connections. These terminals can be used when additional audio output or input is needed. These backup terminals or lines, regardless of whether they are input or output, are collectively referred to as AUX.

[0030] In practical applications, the AUX interface is usually located on the center console of the vehicle. When a user needs to play audio from their mobile phone using the vehicle's in-vehicle player, they connect to the AUX interface via a data cable and then output the audio data from their mobile phone to the in-vehicle player.

[0031] Furthermore, after receiving audio data sent by the user terminal, the AUX interface converts the analog sound signal into a digital signal through sampling, quantization, and encoding processes, and then performs recording, transmission, and other processing to obtain digital audio.

[0032] Furthermore, after connecting to the AUX interface via a data cable, before the car player receives audio data sent by the mobile phone through the AUX interface, the system also includes the mobile phone receiving a transmission command for audio data sent by the vehicle's center console via the data cable, and determining the corresponding audio data mode based on the transmission command, wherein the audio output mode corresponds to the working mode.

[0033] In this embodiment, there are three working modes for audio output: the first working mode is the AUX interface mode, which encodes and decodes the audio data to obtain a first audio signal and outputs it to the vehicle power amplifier circuit; the second working mode is the headphone mode, which uses a HIFI decoder DAC to decode the audio data to obtain a second audio signal and outputs it to the vehicle power amplifier circuit; the third working mode is the GPIO (General-purpose input / output) mode, which directly outputs the audio data to the vehicle power amplifier circuit.

[0034] After receiving audio data, the current working mode of the audio player is detected. Specifically, this can be done by: if the user selects the mode through the UI (User Interface), it can be viewed directly on the UI; or if the user selects the mode through buttons, it can be viewed by pressing the buttons.

[0035] Furthermore, it can also connect to smartphone software via the OBD (On-Board Diagnostic) interface, allowing users to directly view the current audio output working mode on the smartphone software.

[0036] 102. If the working mode is the first working mode, the audio data is encoded and decoded to obtain the first audio signal, and then output to the vehicle power amplifier circuit.

[0037] The first operating mode is the AUX interface mode. A common implementation of audio codecs involves using a dedicated audio chip to acquire and process audio data. The in-vehicle system includes a recorder program that drives the sound card to acquire and process audio data. Audio data acquisition involves inputting audio from the audio player into the in-vehicle system via the AUX interface. Processing the voice signal can involve simple amplification or attenuation, or converting the acquired audio data into a digital signal. The audio chip used may include an MP3 codec chip, a speech synthesis and analysis chip, etc.

[0038] In this embodiment, when the working mode is the first working mode, the AUX interface receives the audio data sent by the user terminal, converts it into a digital signal, and then uses the above-mentioned audio encoding and decoding method to decode the digital signal. The resulting first audio signal is an analog signal, which is then input to the vehicle power amplifier circuit for operation.

[0039] 103. If the working mode is the second working mode, the audio data is decoded by the HIFI decoding DAC to obtain the second audio signal, and then output to the vehicle power amplifier circuit.

[0040] The second working mode is headphone mode. Hi-Fi is an abbreviation for High-Fidelity. DAC is an abbreviation for Digital to Analog Converter, a device that converts digital signals into analog signals, also known as a D / A converter.

[0041] Decoding is the process of converting compressed audio data into uncompressed raw audio data. The decoding process is the most important and complex step in the entire system; through decoding, compressed audio data is output as uncompressed audio sample data.

[0042] In practical applications, when the user selects the headphone mode, the AUX interface receives the audio data sent by the user terminal, converts it into a digital signal, and then uses a HIFI decoder DAC to convert the compressed digital signal into an uncompressed digital signal and then into an analog signal. The second analog audio signal is then output to the vehicle power amplifier circuit for identification and other operations.

[0043] 104. If the working mode is the third working mode, the audio data is directly output to the vehicle power amplifier circuit;

[0044] In this embodiment, the third operating mode is GPIO mode, in which audio data is directly output from digital audio to the vehicle power amplifier circuit to achieve power amplification without analog conversion.

[0045] 105. The audio data, the first audio signal, or the second audio signal are amplified and filtered by the vehicle-mounted power amplifier circuit and then played.

[0046] A car audio amplifier circuit, generally referring to a basic device in an audio system, amplifies the weak electrical signal from the signal source to drive the speakers to produce sound. Types include: amplifying analog signals using an analog power amplifier, such as the first and second operating modes in this invention; and directly amplifying power from digital voice data without analog conversion, such as the third operating mode of this invention.

[0047] In practical applications, filtering aims to eliminate out-of-band noise, while amplification aims to amplify the in-band signal for easier subsequent processing. After receiving the first, second, or third audio signal from the control unit, the car amplifier circuit filters and amplifies it to ensure sufficient signal strength to drive the player. The car player itself is entirely analog, only accepting analog audio signals. Therefore, the car player receives the filtered and amplified analog signal and outputs the audio.

[0048] In this embodiment of the invention, audio data sent by a user terminal is received via an AUX interface, and the current operating mode of the in-vehicle player is detected. Based on the user's selection, the corresponding operating mode is determined. If the operating mode is the first operating mode, the audio data is encoded and decoded to obtain a first audio signal, which is then output to the in-vehicle amplifier circuit. If the operating mode is the second operating mode, the audio data is decoded using a HiFi decoder DAC to obtain a second audio signal, which is then output to the in-vehicle amplifier circuit. If the operating mode is the third operating mode, the audio data is directly output to the in-vehicle amplifier circuit. The in-vehicle amplifier circuit amplifies and filters the audio data, the first audio signal, or the second audio signal before playback. This invention determines the corresponding operating mode based on the user's operation information and controls the path switching switch based on the operating mode. Audio is processed and output according to different operating modes, thereby enabling the audio player to both provide high-quality HiFi audio output from normal headphones and lossless high-quality audio playback via the car's AUX interface, improving user experience and product satisfaction.

[0049] Please see Figure 2 The second embodiment of the in-vehicle audio playback method in this invention includes:

[0050] 201. Receive audio data sent by the user terminal through the AUX interface;

[0051] In practical applications, a data cable is used to connect to the AUX interface, and then the audio data from the audio player is output to the car audio player. The data cable is typically a 3.5mm double-ended single-strand AUX audio cable. In this embodiment, a Type-C data cable can also be used. Simply insert the data cable into the AUX interface and the audio player to establish the connection, and then the audio file can be transferred.

[0052] 202. After starting the audio player, check if the audio player is in the third working mode;

[0053] A typical audio player is activated by clicking a specific button on the car's console, or it can be activated when the car is started.

[0054] If the user selects the working mode through the UI interface, they can directly check whether it is in the third working mode by clicking on the UI. If the user selects the working mode by pressing a button, they can directly identify whether it is in the third working mode by pressing down on the button. It can also connect to a smartphone app via the OBD interface to view the current working mode directly on the smartphone app.

[0055] 203. If so, check if there is any operation information on the UI of the vehicle system;

[0056] In practical applications, the UI screen includes an infrared sensor, which can sense the user's heat map above the screen to trigger the system to recognize which working mode the user has selected on the UI screen.

[0057] Furthermore, the system also needs to detect whether the user selects the corresponding working mode by clicking the button. If so, the effect is the same as the user selecting the working mode on the UI screen.

[0058] 204. If it exists, switch the third working mode to the first working mode or the second working mode based on the operation information;

[0059] If the audio player is started and it is detected that the audio player is in the third working mode, and the user selects the audio output working mode through the vehicle system's UI interface, buttons, or smart software connected to the smartphone via the OBD interface, the system recognizes the user's operation information and switches the third working mode to the first or second working mode based on the operation information.

[0060] 205. If not, proceed with the step of directly outputting audio data to the vehicle power amplifier circuit;

[0061] If the audio player is turned on and detected as being in the third working mode, and the user has not selected a working mode for the audio, the audio will be output in the form of the third working mode, that is, the audio data will be directly output to the vehicle power amplifier circuit.

[0062] 206. If the working mode is the first working mode, the audio data is encoded and decoded to obtain the first audio signal, and then output to the vehicle power amplifier circuit.

[0063] 207. If the working mode is the second working mode, the audio data is decoded by the HIFI decoding DAC to obtain the second audio signal, and then output to the vehicle power amplifier circuit.

[0064] 208. If the working mode is the third working mode, the audio data is directly output to the vehicle power amplifier circuit;

[0065] 209. The audio data, the first audio signal, or the second audio signal is amplified and filtered by the vehicle-mounted power amplifier circuit before being played.

[0066] In this embodiment of the invention, audio data sent by a user terminal is received via an AUX interface. After the audio player is started, it is detected whether the audio player is in a third working mode. If so, it is detected whether the user on the vehicle system has selected the current working mode through the UI interface or buttons. If so, the third working mode is switched to the first or second working mode based on the operation information. If not, the step of directly outputting the audio data to the vehicle power amplifier circuit is executed. If the working mode is the first working mode, the audio data is encoded and decoded to obtain a first audio signal, which is then output to the vehicle power amplifier circuit. If the working mode is the second working mode, the audio data is decoded using a HIFI decoding DAC to obtain a second audio signal, which is then output to the vehicle power amplifier circuit. If the working mode is the third working mode, the audio data is directly output to the vehicle power amplifier circuit. The audio data, the first audio signal, or the second audio signal are amplified and filtered by the vehicle power amplifier circuit before being played. This invention first detects whether the audio player is currently in the third working mode, and then determines different working modes based on the user's selection. The audio is then processed and output according to the different working modes, thereby enabling the audio player to meet both the requirements of normal headphone output of high-quality Hi-Fi audio and the requirements of lossless high-quality audio playback through the car AUX interface, thus improving user experience and product satisfaction.

[0067] Please see Figure 3 In this embodiment of the invention, the in-vehicle audio player is used to implement the above-mentioned in-vehicle playback method, including: an AUX interface 301, a channel switching switch 302, a control unit 303, a first codec 304, a second decoder 305, and an in-vehicle power amplifier circuit 306.

[0068] The AUX interface 301 is connected to the channel switching switch and is used to receive audio data sent by the user terminal.

[0069] Specifically, the audio data can also be transmitted via a USB interface, or via a smart software connected to a smartphone via an OBD interface, in which case the smartphone connects to the OBD interface via WiFi.

[0070] The path switching switch 302 is used to connect to the AUX interface 301 and the control unit 303;

[0071] Specifically, when the AUX interface receives an audio file sent by the user and an instruction to adjust to the first or second working mode, the corresponding channel switching switch connects the AUX interface to the control unit and the first codec, or connects the AUX interface to the control unit and the second decoder, to complete the adjustment of the corresponding working mode.

[0072] In practical applications, the path switching switch 302 is composed of multiple relays connected in parallel. The corresponding relay is selected to be turned on according to different working modes, thereby realizing the connection of the first encoder or the second decoder.

[0073] The control unit 303 is used to connect to the channel switching switch 302, the first codec 304 and the second decoder 305 respectively, and is used to determine the corresponding working mode according to the user's operation information, and control the channel switching switch based on the working mode to connect the AUX interface to one of the control unit, the first codec and the second decoder.

[0074] Specifically, the circuit switching switch 302 in the overall invention patent of the in-vehicle audio player is composed of a SOC (System on Chip) central control unit.

[0075] The first codec 304 is used to encode and decode the audio data to obtain a first audio signal, and output it to the vehicle power amplifier circuit through the control unit;

[0076] The second decoder 305 is used to perform HiFi decoding on the audio data to obtain a second audio signal, and output it to the vehicle power amplifier circuit through the control unit;

[0077] The vehicle-mounted power amplifier circuit 306 is used to amplify and filter the audio data, the first audio signal, or the second audio signal before playback.

[0078] The power amplifier circuit includes two types: constant voltage power amplifiers and constant impedance power amplifiers. Constant voltage power amplifiers are typically mono, converting constant impedance to constant voltage output. Within the amplifier's power range, multiple constant voltage speakers can be connected. Constant impedance power amplifiers typically refer to amplifiers with an output impedance of 16 ohms or less, also called low impedance power amplifiers. Most are dual-channel or higher, and their final output circuits primarily use OTL (Output Transformer Less) or OCL (Output Capacitor Less) power amplifier circuits, which have low output voltage and high current, requiring low load impedance.

[0079] In this embodiment of the invention, a path switching switch is employed, connected to the AUX interface receiving audio data sent by the user terminal and a control unit that determines the corresponding operating mode based on the user's operation information. This connection facilitates subsequent adjustment to different operating modes based on the user's selection. Correspondingly, a first codec and a second decoder are also provided, capable of processing the audio differently according to the user's selected mode, resulting in audio with different output modes. Therefore, the audio playback device can satisfy both normal high-quality Hi-Fi audio output and lossless high-quality audio playback via the automotive AUX interface, improving user experience and product satisfaction.

[0080] The in-vehicle audio playback method and in-vehicle audio player in the embodiments of the present invention have been described above. The control device in the in-vehicle system in the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 4 One embodiment of the control device in the vehicle system of the present invention includes:

[0081] The detection module 401 is used to receive audio data sent by the user terminal through the AUX interface and detect the current working mode of the vehicle system.

[0082] Specifically, the AUX interface receives not only audio data sent by the user terminal, but also transmission instructions that transmit audio data sent by the vehicle's center console to the mobile terminal, and determines the corresponding audio data mode based on the transmission instructions.

[0083] The first output module 402 is used to encode and decode the audio data to obtain a first audio signal and output it to the vehicle power amplifier circuit when the working mode is the first working mode.

[0084] The second output module 403 is used to decode the audio data using a HIFI decoding DAC to obtain a second audio signal when the working mode is the second working mode, and output it to the vehicle power amplifier circuit.

[0085] The third output module 404 is used to directly output the audio data to the vehicle power amplifier circuit when the working mode is the third working mode.

[0086] The playback module 405 is used to amplify and filter the audio data, the first audio signal, or the second audio signal through the vehicle power amplifier circuit before playback.

[0087] Specifically, the playback module includes an in-vehicle power amplifier circuit for processing and controlling audio, and a player for playing audio.

[0088] In this embodiment of the invention, based on the user's selection of different audio playback modes, the corresponding audio processing modes will also be adjusted. The control module in the vehicle system includes a total of three audio output modes: if the working mode is the first working mode, the audio data is encoded and decoded to obtain a first audio signal, which is then output to the vehicle power amplifier circuit; if the working mode is the second working mode, the audio data is decoded using a HIFI decoder DAC to obtain a second audio signal, which is then output to the vehicle power amplifier circuit; if the working mode is the third working mode, the audio data is directly output to the vehicle power amplifier circuit. Therefore, the audio playback device can satisfy both normal output of high-quality HIFI audio and lossless high-quality audio playback via the car's AUX interface, improving user experience and product satisfaction.

[0089] Please see Figure 5 Another embodiment of the control device for the vehicle system in this invention includes:

[0090] The detection module 401 is used to receive audio data sent by the user terminal through the AUX interface and detect the current working mode of the vehicle system.

[0091] The first output module 402 is used to encode and decode the audio data to obtain a first audio signal and output it to the vehicle power amplifier circuit when the working mode is the first working mode.

[0092] The second output module 403 is used to decode the audio data using a HIFI decoding DAC to obtain a second audio signal when the working mode is the second working mode, and output it to the vehicle power amplifier circuit.

[0093] The third output module 404 is used to directly output the audio data to the vehicle power amplifier circuit when the working mode is the third working mode.

[0094] The playback module 405 is used to amplify and filter the audio data, the first audio signal, or the second audio signal through the vehicle power amplifier circuit before playback.

[0095] In this embodiment, the detection module 401 includes:

[0096] The first detection unit 4011 is used to detect whether the audio player is in the third working mode after the audio player is started.

[0097] The second detection unit 4012 is used to detect whether there is operation information on the UI operation interface of the vehicle system if so.

[0098] The switching unit 4013 is used to switch the third working mode to the first working mode or the second working mode based on the operation information if it exists.

[0099] Specifically, when the system detects that the user has changed the working mode, it will switch the current third working mode to the corresponding mode selected by the user; when the system does not detect that the user has changed the working mode, it will not switch and will output according to the current working mode.

[0100] Output unit 4014 is used to perform the step of directly outputting the audio data to the vehicle power amplifier circuit if it does not exist.

[0101] In this embodiment of the invention, based on the user's selection of different working modes for audio playback, the corresponding audio processing modes will also be adjusted. The detection module in the control module of the vehicle system includes a total of three modes: a first detection unit, used to detect whether the audio player is in a third working mode after the audio player is started; a second detection unit, used to detect whether there is operation information on the UI operation interface of the vehicle system if the current audio player is in the third working mode; and a switching unit, used to switch the third working mode to the first or second working mode based on the operation information if there is operation information on the UI operation interface of the vehicle system or if the user changes the audio playback working mode by pressing a button. This enables the audio playback device to meet both the normal output of high-quality HiFi audio and the playback of lossless high-quality audio through the car's AUX interface, improving user experience and product satisfaction.

[0102] above Figure 4 and Figure 5 The vehicle system and the control module in the vehicle system of the present invention will be described in detail from the perspective of modular functional entities. The vehicle system in the present invention will be described in detail from the perspective of hardware processing.

[0103] Figure 6This is a schematic diagram of a vehicle-mounted system 600 provided in an embodiment of the present invention. The vehicle-mounted system 600 can vary significantly due to different configurations or performance characteristics. It may include one or more central processing units (CPUs) 610 (e.g., one or more processors) and a memory 620, and one or more storage media 630 (e.g., one or more mass storage devices) for storing application programs 633 or data 632. The memory 620 and storage media 630 can be temporary or persistent storage. The program stored in the storage media 630 may include one or more modules (not shown in the diagram), each module including a series of instruction operations on the vehicle-mounted system 600. Furthermore, the processor 610 may be configured to communicate with the storage media 630 and execute the series of instruction operations in the storage media 630 on the vehicle-mounted system 600.

[0104] The vehicle system 600 may also include one or more power supplies 640, one or more wired or wireless network interfaces 650, one or more input / output interfaces 660, and / or one or more operating systems 631, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. Those skilled in the art will understand that... Figure 6 The illustrated vehicle system configuration does not constitute a limitation on the vehicle system and may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0105] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium, wherein the computer-readable storage medium stores instructions that, when the instructions are executed on a computer, cause the computer to perform the steps of the in-vehicle audio playback method.

[0106] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system, device, or unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0107] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0108] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A car audio player, characterized in that, The in-vehicle audio player includes: an in-vehicle power amplifier circuit, a control unit, a first codec, a second decoder, a channel switching switch, and an AUX interface; The AUX interface is connected to the channel switching switch and is used to receive audio data sent by the user terminal; The control unit is connected to the channel switching switch, the first codec, and the second decoder respectively, and is used to determine the corresponding working mode according to the user's operation information, and control the channel switching switch based on the working mode to connect the AUX interface to one of the control unit, the first codec, and the second decoder. The first codec is used to encode and decode the audio data to obtain a first audio signal, which is then output to the vehicle power amplifier circuit through the control unit. The second decoder is used to perform HiFi decoding on the audio data to obtain a second audio signal, which is then output to the vehicle power amplifier circuit through the control unit. The vehicle-mounted power amplifier circuit is used to amplify and filter the audio data, the first audio signal, or the second audio signal before playback. The control unit is also used to acquire user operations on the UI interface of the vehicle system or user operations on the buttons of the vehicle system, and determine the corresponding working mode based on the operations, wherein the working mode includes a first working mode, a second working mode and a third working mode. If the working mode is the first working mode, the control unit controls the channel switching switch to connect the communication connection between the AUX interface and the first codec; If the operating mode is the second operating mode, the control unit controls the channel switching switch to connect the communication connection between the AUX interface and the second decoder; If the operating mode is the third operating mode, the control unit controls the channel switching switch to connect the communication connection between the AUX interface and the control unit, and directly outputs the audio data to the vehicle power amplifier circuit.

2. The in-vehicle audio player according to claim 1, characterized in that, The first working mode is the AUX interface mode, the second working mode is the headphone mode, and the third working mode is the general input / output mode.

3. The in-vehicle audio player according to claim 1, characterized in that, The vehicle-mounted power amplifier circuit is connected to the control unit via a USB bus.

4. A method for playing audio in a vehicle, applied to a vehicle audio player as described in any one of claims 1-3, characterized in that, The in-vehicle audio playback method includes: The system receives audio data sent by the user terminal through the AUX interface and detects the current operating mode of the in-vehicle audio player. If the working mode is the first working mode, the audio data is encoded and decoded to obtain the first audio signal, and then output to the vehicle power amplifier circuit. If the working mode is the second working mode, the audio data is decoded using a HIFI decoding DAC to obtain a second audio signal, which is then output to the vehicle power amplifier circuit. If the working mode is the third working mode, the audio data is directly output to the vehicle power amplifier circuit; The audio data, the first audio signal, or the second audio signal are amplified and filtered by the vehicle-mounted power amplifier circuit before being played back.

5. The in-vehicle audio playback method according to claim 4, characterized in that, The detection of the current operating mode of the in-vehicle audio player includes: After the audio player is started, it is detected whether the audio player is in the third working mode; If so, check if there is any operation information on the UI of the vehicle system; If it exists, the third working mode will be switched to the first working mode or the second working mode based on the operation information. If it does not exist, then the step of directly outputting the audio data to the vehicle power amplifier circuit is performed.

6. A vehicle-mounted system, characterized in that, The vehicle-mounted system includes: an AUX interface, a vehicle-mounted power amplifier circuit, and a control device, wherein the control device includes: The detection module is used to receive audio data sent by the user terminal through the AUX interface and detect the current operating mode of the vehicle system. The first output module is used to encode and decode the audio data to obtain a first audio signal and output it to the vehicle power amplifier circuit when the working mode is the first working mode. The second output module is used to decode the audio data using a HIFI decoding DAC to obtain a second audio signal when the working mode is the second working mode, and output it to the vehicle power amplifier circuit. The third output module is used to directly output the audio data to the vehicle power amplifier circuit when the working mode is the third working mode. The playback module is used to amplify and filter the audio data, the first audio signal, or the second audio signal through the vehicle power amplifier circuit before playback.

7. A vehicle-mounted system, characterized in that, The vehicle-mounted system includes: a memory and at least one processor, wherein the memory stores instructions, and the memory and the at least one processor are interconnected via a line; The at least one processor invokes the instructions in the memory to cause the vehicle system to perform the various steps of the vehicle audio playback method as described in claim 4 or 5.

8. A computer-readable storage medium storing a computer program thereon, characterized in that, When the computer program is executed by the processor, it implements the various steps of the in-vehicle audio playback method as described in claim 4 or 5.

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