Signal transmission method, sending end vehicle machine system and receiving end vehicle machine system

Abstract

The invention belongs to the technical field of communication, and particularly relates to a signal transmission method, a sending end in-vehicle infotainment system and a receiving end in-vehicle infotainment system. According to the signal transmission method applied to the sending end vehicle-mounted terminal system, the sending end vehicle-mounted terminal system is connected with sending end communication equipment, the sending end communication equipment is used for transmitting analog audio signals, and the signal transmission method comprises the steps that when a user inputs voice through the sending end communication equipment, the analog audio signals are transmitted to the sending end communication equipment; acquiring a voice signal input by user voice; performing voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal; performing audio coding processing on the digital content information according to the corresponding relationship between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information; and sending the analog audio signal to the sending end communication equipment, so that the sending end communication equipment sends the analog audio signal to receiving end communication equipment.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and in particular, relates to a signal transmission method, a transmitting vehicle system, and a receiving vehicle system. Background Art

[0002] With the rise of outdoor self-driving and off-road outings, the Sichuan-Tibet Line, Qinghai-Tibet Line, Yunnan-Tibet Line and other routes have become extremely popular in recent years. Generally speaking, these self-driving and off-road routes are located in remote suburbs and mountainous areas, where 3G, 4G, 5G and other mobile communication infrastructures are not well developed, and mobile communication network signals are poor or even completely absent. Generally speaking, car radios and satellite communication terminals are often used to communicate with nearby friends or distant family members.

[0003] However, vehicle radios and satellite communication terminals can only send and receive analog audio signals. After users listen to the content of the analog audio signal, they still need a series of manual analysis and processing to understand the meaning of the content, which results in insufficient user experience. Summary of the invention

[0004] The embodiments of the present application provide a signal transmission method, a transmitting vehicle system and a receiving vehicle system, which can solve the technical problem that when the mobile communication infrastructure is underdeveloped and the mobile communication network cannot meet the user's usage needs, communication equipment such as vehicle stations and satellite communication terminals can only transmit analog audio signals and cannot transmit digital content information, making it difficult to meet the user's usage needs.

[0005] In a first aspect, an embodiment of the present application provides a signal transmission method, which is applied to a transmitting end vehicle system, wherein the transmitting end vehicle system is connected to a transmitting end communication device, and the transmitting end communication device is used to transmit an analog audio signal, and the signal transmission method includes:

[0006] When the user performs voice input through the sending end communication device, a voice signal of the user's voice input is obtained;

[0007] Performing voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal;

[0008] According to the corresponding relationship between the frequency and the data value, the digital content information is subjected to audio coding processing to obtain an analog audio signal corresponding to the digital content information;

[0009] The analog audio signal is sent to the transmitting communication device, so that the transmitting communication device sends the analog audio signal to the receiving communication device.

[0010] In a possible implementation manner of the first aspect, performing audio encoding processing on the digital content information according to the correspondence between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information includes:

[0011] Determine the frequency corresponding to the data value of each binary bit corresponding to the digital content information, if the data value of the binary bit corresponding to the digital content information is 0, determine the corresponding frequency to be a first frequency, if the data value of the binary bit corresponding to the digital content information is 1, determine the corresponding frequency to be a second frequency;

[0012] According to the frequency corresponding to each binary bit, an analog audio signal corresponding to the digital content information is obtained.

[0013] In a possible implementation manner of the first aspect, the method further includes:

[0014] Combining the voice signal and the analog audio signal into a voice-data mixed signal;

[0015] The step of sending the analog audio signal to the transmitting end communication device so that the transmitting end communication device sends the analog audio signal to the receiving end communication device comprises:

[0016] The voice-data mixed signal is sent to the transmitting end communication device, so that the transmitting end communication device sends the voice-data mixed signal to the receiving end communication device, wherein the voice-data mixed signal includes the analog audio signal.

[0017] In a possible implementation manner of the first aspect, combining the voice signal and the analog audio signal into a voice data mixed signal includes:

[0018] The voice signal and the analog audio signal are combined into a voice data mixed signal in a manner that the voice signal corresponds to a first frequency range and the analog audio signal corresponds to a second frequency range.

[0019] In a second aspect, an embodiment of the present application provides a signal transmission method, which is applied to a receiving-end vehicle system, wherein the receiving-end vehicle system is connected to a receiving-end communication device, wherein the receiving-end communication device is used to transmit an analog audio signal, wherein the receiving-end communication device receives an analog audio signal sent by a sending-end communication device, and wherein the receiving-end communication device sends the analog audio signal to the receiving-end vehicle system, wherein the signal transmission method includes:

[0020] When receiving the analog audio signal sent by the receiving end communication device, performing audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal;

[0021] The digital content information is presented to a user.

[0022] In a possible implementation manner of the second aspect, performing audio decoding processing on the analog audio signal according to the correspondence between the frequency and the data value to obtain digital content information corresponding to the analog audio signal includes:

[0023] Determine the data value of the binary bit corresponding to each frequency of the analog audio signal, if the detected frequency is the first frequency, determine the data value of the corresponding binary bit to be 0, if the detected frequency is the second frequency, determine the data value of the corresponding binary bit to be 1;

[0024] According to the data value corresponding to each binary bit, the digital content information corresponding to the analog audio signal is obtained.

[0025] In a possible implementation manner of the second aspect, the receiving-end communication device receives a voice-data mixed signal sent by a sending-end communication device, and the receiving-end communication device sends the voice-data mixed signal to the receiving-end vehicle system, and when receiving the analog audio signal sent by the receiving-end communication device, performing audio decoding processing on the analog audio signal according to a correspondence between a frequency and a data value to obtain digital content information corresponding to the analog audio signal, including:

[0026] When the voice data mixed signal sent by the receiving end communication device is received, the analog audio signal in the voice data mixed signal is subjected to audio decoding processing according to the corresponding relationship between frequency and data value to obtain digital content information corresponding to the analog audio signal.

[0027] In a third aspect, an embodiment of the present application provides a signal transmission method, which is applied to a signal transmission system, wherein the signal transmission system includes a transmitting end vehicle system, a transmitting end communication device, a receiving end communication device, and a receiving end vehicle system, wherein the transmitting end vehicle system is connected to the transmitting end communication device, the receiving end vehicle system is connected to the receiving end communication device, the transmitting end communication device is used to transmit an analog audio signal, and the receiving end communication device is used to transmit an analog audio signal, and the signal transmission method includes:

[0028] When the user performs voice input through the transmitting end communication device, the transmitting end vehicle system obtains the voice signal of the user's voice input;

[0029] The sending end vehicle system performs voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal;

[0030] The transmitting end vehicle system performs audio coding processing on the digital content information according to the corresponding relationship between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information;

[0031] The transmitting end vehicle system transmits the analog audio signal to the transmitting end communication device;

[0032] The transmitting end communication device sends the analog audio signal to the receiving end communication device;

[0033] The receiving end communication device sends the analog audio signal to the receiving end vehicle system;

[0034] When receiving the analog audio signal sent by the receiving end communication device, the receiving end vehicle system performs audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal;

[0035] The receiving end vehicle system presents the digital content information to the user.

[0036] In a fourth aspect, an embodiment of the present application provides a transmitting-end vehicle system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the transmitting-end vehicle system is connected to a transmitting-end communication device, wherein the transmitting-end communication device is used to transmit analog audio signals, and when the processor executes the computer program, the method described in the first aspect above is implemented.

[0037] In the fifth aspect, an embodiment of the present application provides a receiving-end vehicle system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the receiving-end vehicle system is connected to a receiving-end communication device, wherein the receiving-end communication device is used to transmit analog audio signals, and when the processor executes the computer program, the method described in the first aspect above is implemented.

[0038] In a sixth aspect, an embodiment of the present application provides a signal transmission device, which is applied to a transmitting end vehicle system, wherein the transmitting end vehicle system is connected to a transmitting end communication device, and the transmitting end communication device is used to transmit an analog audio signal, and the signal transmission device includes:

[0039] A voice signal acquisition module is used to acquire a voice signal of a user's voice input when the user performs voice input through a transmitting end communication device;

[0040] A digital content acquisition module, used to perform voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal;

[0041] An audio signal encoding module, used to perform audio encoding processing on the digital content information according to the corresponding relationship between the frequency and the data value, so as to obtain an analog audio signal corresponding to the digital content information;

[0042] The audio signal sending module is used to send the analog audio signal to the sending end communication device, so that the sending end communication device sends the analog audio signal to the receiving end communication device.

[0043] In a possible implementation manner of the sixth aspect, the audio signal encoding module is used to:

[0044] Determine the frequency corresponding to the data value of each binary bit corresponding to the digital content information, if the data value of the binary bit corresponding to the digital content information is 0, determine the corresponding frequency to be a first frequency, if the data value of the binary bit corresponding to the digital content information is 1, determine the corresponding frequency to be a second frequency;

[0045] According to the frequency corresponding to each binary bit, an analog audio signal corresponding to the digital content information is obtained.

[0046] In a possible implementation manner of the sixth aspect, the signal transmission device further includes:

[0047] A mixed signal merging module, used for merging the voice signal and the analog audio signal into a voice data mixed signal;

[0048] The audio signal sending module is used to send the voice data mixed signal to the sending end communication device, so that the sending end communication device sends the voice data mixed signal to the receiving end communication device, wherein the voice data mixed signal includes the analog audio signal.

[0049] In a possible implementation manner of the sixth aspect, the mixed signal merging module is used to:

[0050] The voice signal and the analog audio signal are combined into a voice data mixed signal in a manner that the voice signal corresponds to a first frequency range and the analog audio signal corresponds to a second frequency range.

[0051] In a seventh aspect, an embodiment of the present application provides a signal transmission device, which is applied to a receiving-end vehicle system, wherein the receiving-end vehicle system is connected to a receiving-end communication device, wherein the receiving-end communication device is used to transmit an analog audio signal, wherein the receiving-end communication device receives an analog audio signal sent by a sending-end communication device, and wherein the receiving-end communication device sends the analog audio signal to the receiving-end vehicle system, wherein the signal transmission device includes:

[0052] An audio signal decoding module, configured to, when receiving an analog audio signal sent by the receiving end communication device, perform audio decoding processing on the analog audio signal according to the corresponding relationship between frequency and data value to obtain digital content information corresponding to the analog audio signal;

[0053] The digital content presentation module is used to present the digital content information to the user.

[0054] In a possible implementation manner of the seventh aspect, the audio signal decoding module is used to:

[0055] Determine the data value of the binary bit corresponding to each frequency of the analog audio signal, if the detected frequency is the first frequency, determine the data value of the corresponding binary bit to be 0, if the detected frequency is the second frequency, determine the data value of the corresponding binary bit to be 1;

[0056] According to the data value corresponding to each binary bit, the digital content information corresponding to the analog audio signal is obtained.

[0057] In a possible implementation manner of the seventh aspect, the receiving-end communication device receives a voice-data mixed signal sent by a sending-end communication device, and the receiving-end communication device sends the voice-data mixed signal to the receiving-end vehicle system, and the audio signal decoding module is used to:

[0058] When the voice data mixed signal sent by the receiving end communication device is received, the analog audio signal in the voice data mixed signal is subjected to audio decoding processing according to the corresponding relationship between frequency and data value to obtain digital content information corresponding to the analog audio signal.

[0059] In an eighth aspect, an embodiment of the present application provides a signal transmission system, the signal transmission system comprising a signal transmission device applied to a transmitting-end vehicle system and a signal transmission device applied to a receiving-end vehicle system, the signal transmission system comprising a transmitting-end vehicle system, a transmitting-end communication device, a receiving-end communication device, and a receiving-end vehicle system, the transmitting-end vehicle system is connected to the transmitting-end communication device, the receiving-end vehicle system is connected to the receiving-end communication device, the transmitting-end communication device is used to transmit an analog audio signal, the receiving-end communication device is used to transmit an analog audio signal, and the signal transmission system comprises:

[0060] A voice signal acquisition module is used to acquire a voice signal of a user's voice input when the user performs voice input through a transmitting end communication device;

[0061] A digital content acquisition module, used to perform voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal;

[0062] An audio signal encoding module, used to perform audio encoding processing on the digital content information according to the corresponding relationship between the frequency and the data value, so as to obtain an analog audio signal corresponding to the digital content information;

[0063] The audio signal sending module is used to send the analog audio signal to the sending end communication device, so that the sending end communication device sends the analog audio signal to the receiving end communication device.

[0064] The transmitting end communication device sends the analog audio signal to the receiving end communication device;

[0065] The receiving end communication device sends the analog audio signal to the receiving end vehicle system;

[0066] An audio signal decoding module, configured to, when receiving an analog audio signal sent by the receiving end communication device, perform audio decoding processing on the analog audio signal according to the corresponding relationship between frequency and data value to obtain digital content information corresponding to the analog audio signal;

[0067] The digital content presentation module is used to present the digital content information to the user.

[0068] It can be understood that the beneficial effects of the second to eighth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0069] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0070] When the mobile communication infrastructure is underdeveloped and the mobile communication network cannot meet the needs of users, users usually use car radios for intercoms or satellite communication terminals for phone calls. However, in this scenario, car radios and satellite communication terminals can only transmit analog audio signals, but cannot transmit digital content information, which makes it difficult to meet the needs of users. According to the present application scheme, when the user inputs voice through the sending end communication device, the sending end car system obtains the voice signal of the user's voice input, and then the sending end car system can perform voice analysis processing on the voice signal to obtain the digital content information corresponding to the voice signal, and then the sending end car system can perform audio encoding processing on the digital content information according to the corresponding relationship between the frequency and the data value to obtain the analog audio signal corresponding to the digital content information, and the sending end car system sends the analog audio signal to the sending end communication device, so that the sending end communication device sends the analog audio signal to the receiving end communication device, and then the receiving end communication device sends the analog audio signal to the receiving end car system, and the receiving end car system can perform audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal and present the digital content information to the user. Accordingly, the present application scheme can realize the interactive cooperation among the sending-end vehicle system, the sending-end communication equipment, the receiving-end communication equipment, and the receiving-end vehicle system, so as to obtain the digital content information corresponding to the voice signal through voice analysis processing of the voice signal input by the user, and perform audio encoding processing on the digital content information to generate an analog audio signal. After the analog audio signal is sent to the receiving-end vehicle system, the receiving-end vehicle system can perform audio decoding processing on the analog audio signal and present the digital content information corresponding to the analog audio signal to the user, so as to realize the transmission of digital content information through vehicle stations, satellite communication terminals and other communication equipment that can only be used to transmit analog audio signals, thereby better satisfying the user's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0072] Figure 1 It is a schematic diagram of the system structure provided by an embodiment of the present application;

[0073] Figure 2 It is a flowchart of a signal transmission method provided by an embodiment of the present application;

[0074] Figure 3 is a structural diagram of a signal transmission system provided by an embodiment of the present application;

[0075] Figure 4 It is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0076] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0077] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0078] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0079] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0080] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0081] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0082] The signal transmission method provided in the embodiments of the present application can be applied to terminal devices such as mobile phones, tablet computers, wearable devices, vehicle-mounted devices, Internet of Vehicles terminals, vehicle-machine systems, augmented reality (AR) / virtual reality (VR) devices, laptop computers, ultra-mobile personal computers (UMPC), netbooks, personal digital assistants (PDA), etc. The embodiments of the present application do not impose any restrictions on the specific types of terminal devices.

[0083] For example, the terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a vehicle networking terminal, a vehicle system, a computer, a laptop computer, a handheld communication device, a handheld computing device, a satellite wireless device, a wireless modem card, a TV set top box (STB), a customer premises equipment (CPE) and / or other devices for communicating on a wireless system and a next-generation communication system, such as a mobile terminal in a 5G network or a mobile terminal in a future evolved public land mobile network (PLMN) network, etc.

[0084] When the mobile communication infrastructure is underdeveloped and the mobile communication network cannot meet the needs of users, users usually use car radios for intercoms or satellite communication terminals for phone calls. However, in this scenario, car radios and satellite communication terminals can only transmit analog audio signals, and cannot transmit digital content information, which makes it difficult to meet user needs. In this scenario, sometimes when users use car radios or satellite communication terminals to communicate some information using analog audio signals, the other end user cannot remember it clearly after listening to the analog audio signal, or the other end user cannot make good secondary use of the information. In this case, if digital content information can be sent to the other end user, the other end user will have a better user experience.

[0085] For example, the sending user uses an analog audio signal to send "I am now at xxxx location, come here quickly." After the receiving user hears this analog audio signal, he may need to find the location manually or through a smart device such as a mobile phone. However, in some situations where there is no mobile network environment, it is also impossible to find the location through a smart device such as a mobile phone. In this case, if the sending user can send detailed geolocation information in a digital format, it will be easier for the receiving user to locate the geolocation information through GPS (Global Positioning System, referred to as GPS) and other methods.

[0086] For another example, the sending user uses an analog audio signal to send "My account is xxxxx, please remember it". After the receiving user hears this analog audio signal, he may need to remember the account manually or record it through a smart device such as a mobile phone. In this case, if the sending user can send the account text information in digital format, it will be easier for the receiving user to receive and use the account text information.

[0087] Figure 1 It is a schematic diagram of the system structure provided in one embodiment of the present application.

[0088] like Figure 1 As shown, the transmitting end vehicle system 111 is connected to the transmitting end communication device 112, and the receiving end vehicle system 121 is connected to the receiving end communication device 122. The transmitting end communication device 112 can send an analog audio signal to the receiving end communication device 122, and correspondingly, the receiving end communication device 122 can receive the analog audio signal sent by the transmitting end communication device 112. Among them, the transmitting end communication device 112 can be used to transmit analog audio signals, and the receiving end communication device 122 can be used to transmit analog audio signals. The transmitting end communication device 112 includes but is not limited to vehicle stations, satellite communication terminals and other communication devices that can transmit analog audio signals. The receiving end communication device 122 includes but is not limited to vehicle stations, satellite communication terminals and other communication devices that can transmit analog audio signals.

[0089] Here, the transmitting end vehicle system 111 and the transmitting end communication device 112 can be connected via Bluetooth, wifi, data line, etc. The transmitting end communication device 112 can receive the analog audio signal sent by the transmitting end vehicle system 111 via Bluetooth, wifi, data line, etc.

[0090] Here, the receiving end vehicle system 121 and the receiving end communication device 122 can be connected via Bluetooth, wifi, data line, etc. The receiving end vehicle system 121 can receive the analog audio signal sent by the receiving end communication device 122 via Bluetooth, wifi, data line, etc.

[0091] Figure 2 1 is a flow chart of a signal transmission method provided by an embodiment of the present application. The signal transmission method includes a signal transmission method performed by a transmitting end vehicle system 111 and a signal transmission method performed by a receiving end vehicle system 121.

[0092] S21, when the user performs voice input through the transmitting end communication device 112, the transmitting end vehicle system 111 obtains the voice signal of the user's voice input.

[0093] When the user performs voice input through the transmitting end communication device 112 , the transmitting end vehicle system 111 may obtain the voice signal of the user's voice input through the microphone of the transmitting end vehicle system 111 or other devices for collecting voice signals.

[0094] Here, the transmitting end vehicle system 111 can present the function provided by the present application scheme to the user as a function option through a graphical user interface. The user can choose whether to start the function provided by the present application scheme through the function option. The transmitting end vehicle system 111 can also present the user agreement to the user to remind the user that the use of this function will collect the voice signal input by the user through the microphone of the transmitting end vehicle system 111 through voice input. If the user agrees to the content of the user agreement, the user can choose to start the function provided by the present application scheme.

[0095] In one embodiment, before the user performs voice input through the transmitting communication device 112, the signal transmission method further includes: when the user chooses to open the manual data interaction mode or the user chooses to open the automatic data interaction mode, starting to collect the user's voice input.

[0096] The transmitting-end vehicle system 111 can also provide two data interaction modes for enabling the functions provided by this application, such as manual data interaction mode and automatic data interaction mode. The manual data interaction mode indicates that the user can manually trigger the timing of information that needs to be converted into digital content. When the user chooses to turn on the manual data interaction mode, the transmitting-end vehicle system 111 starts to collect voice signals of the user's voice input; when the user turns off the manual data interaction mode, the transmitting-end vehicle system 111 ends collecting voice signals of the user's voice input. When the user chooses to turn on the automatic data interaction mode, the transmitting-end vehicle system 111 continues to collect voice signals of the user's voice input.

[0097] S22, the sending end vehicle system 111 performs voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal.

[0098] Here, speech analysis processing includes, but is not limited to, various processing methods that can convert speech signals into corresponding digital content information, such as automatic speech recognition, natural language processing, and information retrieval through an application programming interface. Automatic speech recognition and natural language processing can form a speech interaction engine.

[0099] Digital content information refers to information that is stored and processed in digital form and represents certain content. Digital content information is different from analog audio signals. Digital content information is usually a discrete signal, for example, it can be represented by 1 and 0. Analog audio signals are continuous signals, generally represented by continuously changing electromagnetic waves or continuously changing signal voltages.

[0100] In one embodiment, the transmitting end vehicle system 111 performs voice analysis processing on the voice signal, and the manner of obtaining the digital content information corresponding to the voice signal includes but is not limited to the following three methods:

[0101] 1) The transmitting vehicle system 111 performs automatic speech recognition (ASR) on the speech signal to obtain digital content information corresponding to the speech signal. Automatic speech recognition can convert the vocabulary content in the speech signal into computer-readable input, such as keystrokes, binary codes or character sequence text information.

[0102] 2) The sending end vehicle system 111 performs automatic speech recognition and natural language processing (NLP) on the speech signal to obtain digital content information corresponding to the speech signal. Natural language processing can convert speech signals into digital content information that can be understood by humans, such as natural language and user intentions.

[0103] Optionally, the vehicle system 111 at the transmitting end performs automatic speech recognition processing and natural language processing on the voice signal to obtain initial intention information corresponding to the voice signal; provides the initial intention information to the user; and determines the valid intention information selected by the user from the initial intention information as the digital content information corresponding to the voice signal. Here, the vehicle system 111 at the transmitting end can present the initial intention information to the user through a graphical user interface on the screen, and the user can select valid intention information recognized by the user from the initial intention information presented by the graphical user interface by touch, and then the vehicle system 111 at the transmitting end can determine the valid intention information as the digital content information corresponding to the voice signal.

[0104] 3) The sending end vehicle system 111 performs automatic speech recognition processing and natural language processing on the voice signal, retrieves information through the Application Programming Interface (API), and obtains digital content information corresponding to the voice signal.

[0105] Here, digital content information including but not limited to location information and time information can be obtained by retrieving information through the API. For example, if the user voice signal includes "My current location is XXXX", the longitude and latitude information corresponding to the user's location can be used as the digital content information corresponding to the voice signal by retrieving information through the API. For another example, if the user voice signal includes "See you in Lhasa in one hour", the exact time one hour after the current time can be used as the digital content information corresponding to the voice signal by retrieving information through the API.

[0106] Optionally, the transmitting vehicle system 111 performs automatic speech recognition processing and natural language processing on the voice signal to obtain initial intention information corresponding to the voice signal; based on the initial intention information, the information is retrieved through the application programming interface to obtain digital content information corresponding to the voice signal. Here, the obtained digital content information includes but is not limited to location information, time information, etc.

[0107] S23, the transmitting end vehicle system 111 performs audio encoding processing on the digital content information according to the corresponding relationship between the frequency and the data value, and obtains an analog audio signal corresponding to the digital content information.

[0108] Here, since the digital content information is information in digital form, the digital content information can be understood as continuous information having a plurality of bits, each bit having a data value.

[0109] Those skilled in the art should understand that since there is a corresponding relationship between frequency and data value, the number system used by the digital content information determines the number of corresponding frequencies. For example, if the digital content information adopts binary system, two different frequencies need to be used to correspond to different data values. For another example, if the digital content information adopts quaternary system, four different frequencies need to be used to correspond to different data values. And so on.

[0110] In one embodiment, performing audio encoding processing on the digital content information according to the correspondence between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information includes:

[0111] Determine the frequency corresponding to the data value of each binary bit corresponding to the digital content information, if the data value of the binary bit corresponding to the digital content information is 0, determine the corresponding frequency to be a first frequency, if the data value of the binary bit corresponding to the digital content information is 1, determine the corresponding frequency to be a second frequency;

[0112] According to the frequency corresponding to each binary bit, an analog audio signal corresponding to the digital content information is obtained.

[0113] Taking binary as an example, the data value of each binary bit of the digital content information is 0011010, where 0 and 1 are specific data values.

[0114] Taking binary as an example, when the data value of a binary bit is 0, it can be determined that the binary bit corresponds to the first frequency. When the data value of a binary bit is 1, it can be determined that the binary bit corresponds to the second frequency.

[0115] Continuing with the previous example, if the digital content information is 0011010, the frequencies corresponding to the sine wave waveform of the analog audio signal corresponding to the digital content information are arranged in chronological order as follows: first frequency, first frequency, second frequency, second frequency, first frequency, second frequency, first frequency, first frequency.

[0116] When selecting a specific frequency value, for example, a frequency that adapts to an 8kHz sampling rate can be selected. For example, if the first frequency f0 is used to represent a binary data value of 0, the first frequency can be selected as 800Hz; if the second frequency f1 is used to represent a binary data value of 1, the second frequency can be selected as 1200Hz. Here, selecting a suitable frequency can enable the analog audio signal to be clearly distinguished after compression. Another example: if the first frequency f0 is used to represent a binary data value of 0, the first frequency can be selected as 1200Hz; if the second frequency f1 is used to represent a binary data value of 1, the second frequency can be selected as 2200Hz. In an 8kHz audio bandwidth, a narrower frequency interval can be selected and the transmission rate can be reduced to ensure that the analog audio signal can effectively pass through a communication channel with bandwidth limitations.

[0117] The transmitting vehicle system 111 performs audio coding processing on the digital content information according to the corresponding relationship between the frequency and the data value, and encodes the binary data to be transmitted into a corresponding analog audio signal.

[0118] In one embodiment, the signal transmission method further includes: performing anti-compression processing on the analog audio signal to obtain an analog audio signal after anti-compression processing.

[0119] Here, the anti-compression treatment includes but is not limited to at least any of the following methods:

[0120] 1) Redundant bits are added to the data frame structure of the analog audio signal to detect and correct errors during the transmission of the analog audio signal, ensure that data is not lost, and ensure the integrity and correctness of the data.

[0121] 2) Add a checksum to the data frame structure of the analog audio signal to detect and correct errors during the transmission of the analog audio signal, ensure that data is not lost, and ensure the integrity and correctness of the data.

[0122] 3) Add synchronization signals before and after each data frame structure of the analog audio signal to ensure that the boundaries of the data frames can be correctly identified during the audio decoding process, to ensure that data is not lost, and to ensure the integrity and correctness of the data.

[0123] In one embodiment, the signal transmission method further includes: performing anti-shake and stability enhancement processing on the analog audio signal to obtain an analog audio signal after the anti-shake and stability enhancement processing.

[0124] Here, the anti-shake and stability enhancement processing includes but is not limited to at least any one of the following methods:

[0125] 1) Add error correction code to analog audio signal. When sending analog audio signal at the transmitting end, error detection and correction technology such as Hamming code or cyclic redundancy check (CRC) can be used. When receiving analog audio signal at the receiving end, possible erroneous bits can be corrected by Hamming code or cyclic redundancy check.

[0126] 2) Perform phase-locked loop (PLL) processing on analog audio signals. By performing phase-locked loop processing on analog audio signals, the frequency tracking of the receiving end can be kept stable and the instability caused by frequency drift or signal jitter can be reduced.

[0127] 3) Perform phase jitter mitigation processing on analog audio signals. In order to reduce the frequency drift caused by communication link delay or carrier jitter, phase jitter mitigation processing can be performed on analog audio signals to ensure that the phase change of the analog audio signals is as smooth as possible, thereby reducing the misjudgment of analog audio signals.

[0128] 4) Perform time synchronization and symbol detection window processing on the analog audio signal. By setting a fixed symbol detection window, each symbol in the analog audio signal can be stably transmitted within the set time, avoiding interference during frequent switching.

[0129] S24 , the transmitting vehicle system 111 transmits the analog audio signal to the transmitting communication device 112 .

[0130] Here, the transmitting end vehicle system 111 and the transmitting end communication device 112 can be connected, for example, via Bluetooth, wifi, data line, etc. The transmitting end communication device 112 can receive the analog audio signal sent by the transmitting end vehicle system 111 via an audio interface via Bluetooth, wifi, data line, etc.

[0131] In one embodiment, the signal transmission method further includes:

[0132] Combining the voice signal with the analog audio signal into a voice-data mixed signal;

[0133] The step of sending the analog audio signal to the transmitting end communication device so that the transmitting end communication device sends the analog audio signal to the receiving end communication device comprises:

[0134] The voice-data mixed signal is sent to a transmitting end communication device, so that the transmitting end communication device sends the voice-data mixed signal to a receiving end communication device, wherein the voice-data mixed signal includes the analog audio signal.

[0135] In S24, the transmitting vehicle system 111 may send the voice data mixed signal to the transmitting communication device 112. In subsequent S25, the transmitting communication device 112 sends the voice data mixed signal to the receiving communication device 122, wherein the voice data mixed signal includes the analog audio signal.

[0136] Here, the transmitting vehicle system 111 can embed the voice signal and the analog audio signal into the same audio stream at the same time by audio multiplexing to generate a voice data mixed signal. The transmitting vehicle system 111 combines the voice signal and the analog audio signal into a voice data mixed signal and sends the voice data mixed signal to the transmitting communication device 112, which can improve the efficiency of information transmission and enable the receiving vehicle system to obtain the voice data mixed signal, so that the voice signal can be played on the one hand and the digital content information corresponding to the analog audio signal can be presented to the user on the other hand, thereby improving the efficiency of signal transmission.

[0137] In one embodiment, combining the voice signal and the analog audio signal into a voice-data mixed signal includes:

[0138] The voice signal and the analog audio signal are combined into a voice data mixed signal in a manner that the voice signal corresponds to the first frequency range and the analog audio signal corresponds to the second frequency range.

[0139] Here, the transmitting end vehicle system 111 combines the voice signal and the analog audio signal into a voice data mixed signal in such a manner that the voice signal corresponds to the first frequency range and the analog audio signal corresponds to the second frequency range, thereby ensuring that the voice signal and the analog audio signal do not overlap in the frequency domain.

[0140] For example, the transmitting end vehicle system 111 can allocate the voice signal and the analog audio signal to different frequency bands by frequency domain segmentation. For example, the voice signal corresponds to the first frequency range, such as between 300 Hz and 3400 Hz. The analog audio signal corresponds to the second frequency range, for example, it can be allocated to a higher frequency band, such as 4000 Hz to 4800 Hz.

[0141] S25 , the transmitting communication device 112 transmits the analog audio signal to the receiving communication device 122 , and correspondingly, the receiving communication device 122 receives the analog audio signal transmitted by the transmitting communication device 112 .

[0142] The transmitting end communication device 112 can be used to transmit analog audio signals, and the receiving end communication device 122 can be used to transmit analog audio signals. The transmitting end communication device 112 includes but is not limited to a vehicle station, a satellite communication terminal, and other communication devices that can transmit analog audio signals. The receiving end communication device 122 includes but is not limited to a vehicle station, a satellite communication terminal, and other communication devices that can transmit analog audio signals.

[0143] S26 , the receiving end communication device 122 sends the analog audio signal to the receiving end vehicle system 121 .

[0144] Here, the receiving end vehicle system 121 and the receiving end communication device 122 can be connected via Bluetooth, wifi, data line, etc. The receiving end vehicle system 121 can receive the analog audio signal sent by the receiving end communication device 122 via the audio interface of Bluetooth, wifi, data line, etc.

[0145] S27, when receiving the analog audio signal sent by the receiving end communication device 122, the receiving end vehicle system 121 performs audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal.

[0146] Those skilled in the art should understand that since there is a corresponding relationship between frequency and data value, the number system used by the digital content information determines the number of corresponding frequencies. For example, if the digital content information adopts binary system, two different frequencies need to be used to correspond to different data values. For another example, if the digital content information adopts quaternary system, four different frequencies need to be used to correspond to different data values. And so on.

[0147] In one embodiment, performing audio decoding processing on the analog audio signal according to the correspondence between the frequency and the data value to obtain digital content information corresponding to the analog audio signal includes:

[0148] Determine the data value of the binary bit corresponding to each frequency of the analog audio signal, if the detected frequency is the first frequency, determine the data value of the corresponding binary bit to be 0, if the detected frequency is the second frequency, determine the data value of the corresponding binary bit to be 1;

[0149] According to the data value corresponding to each binary bit, the digital content information corresponding to the analog audio signal is obtained.

[0150] Taking binary as an example, the frequencies corresponding to the sine wave waveform of the analog audio signal are arranged in chronological order as follows: first frequency, first frequency, second frequency, second frequency, first frequency, second frequency, first frequency, first frequency.

[0151] If the detected frequency is the first frequency, the data value of the corresponding binary bit is determined to be 0. If the detected frequency is the second frequency, the data value of the corresponding binary bit is determined to be 1.

[0152] Continuing with the previous example, the digital content information corresponding to the analog audio signal is 0011010.

[0153] The receiving end vehicle system 121 performs audio decoding processing on the digital content information according to the corresponding relationship between the frequency and the data value, and decodes the received analog audio signal into the corresponding digital content information.

[0154] In one embodiment, the signal transmission method further includes:

[0155] The receiving end vehicle system 121 filters and decodes the analog audio signal. Here, the receiving end vehicle system 121 may use a bandpass filter to filter and decode the analog audio signal.

[0156] In one embodiment, in S25, the receiving end communication device receives the voice data mixed signal sent by the sending end communication device. In S26, the receiving end communication device sends the voice data mixed signal to the receiving end vehicle system. In S27, when the analog audio signal sent by the receiving end communication device is received, the analog audio signal is subjected to audio decoding processing according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal, including:

[0157] When the voice data mixed signal sent by the receiving end communication device is received, the analog audio signal in the voice data mixed signal is subjected to audio decoding processing according to the corresponding relationship between frequency and data value to obtain digital content information corresponding to the analog audio signal.

[0158] Here, since the voice signal corresponds to the first frequency range and the analog audio signal corresponds to the second frequency range, the receiving end vehicle system 121 can perform audio decoding processing on the analog audio signal in the voice data mixed signal according to the second frequency range to obtain digital content information corresponding to the analog audio signal.

[0159] The receiving end vehicle system 121 performs audio decoding processing on the analog audio signal in the voice data mixed signal according to the correspondence between the frequency and the data value, which is similar to or the same as the receiving end vehicle system performs audio decoding processing on the analog audio signal, and will not be repeated here.

[0160] Correspondingly, in S28, the receiving end vehicle system 121 can present the digital content information to the user and play the voice signal to the user.

[0161] S28, the receiving end vehicle system 121 presents the digital content information to the user.

[0162] Here, if the digital content information is text information or time information, the receiving end vehicle system 121 can present the text information or time information to the user on the screen. If the digital content information is geographic location information, the receiving end vehicle system 121 can present the geographic location information to the user on a map presented on the screen.

[0163] When the mobile communication infrastructure is underdeveloped and the mobile communication network cannot meet the needs of users, users usually use car radios for intercoms or satellite communication terminals for phone calls. However, in this scenario, car radios and satellite communication terminals can only transmit analog audio signals, but cannot transmit digital content information, which makes it difficult to meet the needs of users. According to the present application scheme, when the user inputs voice through the sending end communication device, the sending end car system obtains the voice signal of the user's voice input, and then the sending end car system can perform voice analysis processing on the voice signal to obtain the digital content information corresponding to the voice signal, and then the sending end car system can perform audio encoding processing on the digital content information according to the corresponding relationship between the frequency and the data value to obtain the analog audio signal corresponding to the digital content information, and the sending end car system sends the analog audio signal to the sending end communication device, so that the sending end communication device sends the analog audio signal to the receiving end communication device, and then the receiving end communication device sends the analog audio signal to the receiving end car system, and the receiving end car system can perform audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal and present the digital content information to the user. Accordingly, the present application scheme can realize the interactive cooperation among the sending-end vehicle system, the sending-end communication equipment, the receiving-end communication equipment, and the receiving-end vehicle system, so as to obtain the digital content information corresponding to the voice signal through voice analysis processing of the voice signal input by the user, and perform audio encoding processing on the digital content information to generate an analog audio signal. After the analog audio signal is sent to the receiving-end vehicle system, the receiving-end vehicle system can perform audio decoding processing on the analog audio signal and present the digital content information corresponding to the analog audio signal to the user, so as to realize the transmission of digital content information through vehicle stations, satellite communication terminals and other communication equipment that can only be used to transmit analog audio signals, thereby better satisfying the user's usage experience.

[0164] According to the present application scheme, for example, when a user says in voice "I am now at xxxx location in Baoding City", the sending-end vehicle system can obtain the digital content information corresponding to the voice signal through voice analysis processing of the voice signal input by the sending-end user, that is, the geographical location information in a digital format, and then perform audio encoding processing on the digital content information according to the correspondence between frequency and data value to obtain an analog audio signal corresponding to the digital content information, and send the analog audio signal to the receiving-end communication device through the sending-end communication device, and then the receiving-end communication device sends the analog audio signal to the receiving-end vehicle system, and the receiving-end vehicle system can perform audio decoding processing on the analog audio signal according to the correspondence between frequency and data value to obtain the digital content information corresponding to the analog audio signal, that is, obtain the geographical location information in a digital format, and present the digital content information to the user, for example, present the geographical location information on the screen of the vehicle system, so that the receiving-end user can more accurately understand the geographical location sent by the sending-end user.

[0165] The present application scheme can be applied to off-road and outdoor adventure scenarios. In off-road and outdoor adventure scenarios, the transmitting vehicle system can send precise geographic location information by sending digital content information, and accordingly, the receiving vehicle system can accurately display the geographic location information. In off-road or outdoor adventure scenarios, the present application scheme can more accurately enable the receiving user to understand the geographic location of the transmitting user by transmitting digital content information, avoiding the errors caused by simply transmitting analog audio signals. In off-road and outdoor adventure scenarios, the transmitting vehicle system can better transmit emergency information. In an emergency, the transmitting vehicle system can more reliably transmit key data, such as rescue requests, emergency contact information, etc., by transmitting digital content information.

[0166] This application solution can be applied to remote monitoring and data collection scenarios. In remote monitoring and data collection scenarios, the sending vehicle system can realize the return of real-time data by sending digital content information, which can be applied to the real-time return of remote monitoring equipment or sensor data to improve monitoring and management efficiency. In remote monitoring and data collection scenarios, this application solution can be applied to low-bandwidth environments, and can ensure the reliability of data transmission in environments with limited bandwidth or unstable network.

[0167] The present application scheme can be applied to security application scenarios. In security application scenarios, the present application scheme can achieve covert data transmission by sending digital content information. In security applications, the present application scheme can transmit data more covertly by transmitting analog audio signals, thereby improving the security of communication. In addition, the present application scheme has anti-interference capabilities, can adapt to low sampling rates and compression environments, and ensure communication quality in complex electromagnetic environments.

[0168] Figure 3 1 is a schematic diagram of the structure of a signal transmission system provided in an embodiment of the present application. The signal transmission system comprises a signal transmission device 31 applied to a transmitting end vehicle system and a signal transmission device 32 applied to a receiving end vehicle system.

[0169] like Figure 3 As shown, the signal transmission device 31 of the transmitting end vehicle system is applied to the transmitting end vehicle system, the transmitting end vehicle system is connected to the transmitting end communication device, the transmitting end communication device is used to transmit the analog audio signal, and the signal transmission device 31 includes:

[0170] The voice signal acquisition module 311 is used to acquire the voice signal of the user's voice input when the user performs voice input through the sending end communication device;

[0171] The digital content acquisition module 312 is used to perform voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal;

[0172] The audio signal encoding module 313 is used to perform audio encoding processing on the digital content information according to the corresponding relationship between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information;

[0173] The audio signal sending module 314 is used to send the analog audio signal to the sending end communication device, so that the sending end communication device sends the analog audio signal to the receiving end communication device.

[0174] Another embodiment of the present invention discloses a signal transmission device 31. Figure 3 Based on the corresponding embodiment, the audio signal encoding module 313 is used for:

[0175] Determine the frequency corresponding to the data value of each binary bit corresponding to the digital content information, if the data value of the binary bit corresponding to the digital content information is 0, determine the corresponding frequency to be a first frequency, if the data value of the binary bit corresponding to the digital content information is 1, determine the corresponding frequency to be a second frequency;

[0176] According to the frequency corresponding to each binary bit, an analog audio signal corresponding to the digital content information is obtained.

[0177] Another embodiment of the present invention discloses a signal transmission device 31. Figure 3 On the basis of the corresponding embodiment, the signal transmission device 31 further includes:

[0178] A mixed signal merging module, used for merging the voice signal and the analog audio signal into a voice data mixed signal;

[0179] The audio signal sending module 314 is further used to send the voice data mixed signal to the sending end communication device, so that the sending end communication device sends the voice data mixed signal to the receiving end communication device, wherein the voice data mixed signal includes the analog audio signal.

[0180] Another embodiment of the present invention discloses a signal transmission device 31. Figure 3 Based on the corresponding embodiment, the mixed signal merging module is used for:

[0181] The voice signal and the analog audio signal are combined into a voice data mixed signal in a manner that the voice signal corresponds to a first frequency range and the analog audio signal corresponds to a second frequency range.

[0182] like Figure 3 As shown, the signal transmission device 32 of the receiving end vehicle system is applied to the receiving end vehicle system, the receiving end vehicle system is connected to the receiving end communication device, the receiving end communication device is used to transmit the analog audio signal, the receiving end communication device receives the analog audio signal sent by the sending end communication device, the receiving end communication device sends the analog audio signal to the receiving end vehicle system, the signal transmission device 32 includes:

[0183] The audio signal decoding module 321 is used to, when receiving the analog audio signal sent by the receiving end communication device, perform audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal;

[0184] The digital content presenting module 322 is used to present the digital content information to the user.

[0185] Another embodiment of the present invention discloses a signal transmission device 32. Figure 3 Based on the corresponding embodiment, the audio signal decoding module 321 is used for:

[0186] Determine the data value of the binary bit corresponding to each frequency of the analog audio signal, if the detected frequency is the first frequency, determine the data value of the corresponding binary bit to be 0, if the detected frequency is the second frequency, determine the data value of the corresponding binary bit to be 1;

[0187] According to the data value corresponding to each binary bit, the digital content information corresponding to the analog audio signal is obtained.

[0188] Another embodiment of the present invention discloses a signal transmission device 32. Figure 3On the basis of the corresponding embodiment, the receiving end communication device receives the voice data mixed signal sent by the sending end communication device, and the receiving end communication device sends the voice data mixed signal to the receiving end vehicle system, and the audio signal decoding module 321 is used to:

[0189] When the voice data mixed signal sent by the receiving end communication device is received, the analog audio signal in the voice data mixed signal is subjected to audio decoding processing according to the corresponding relationship between frequency and data value to obtain digital content information corresponding to the analog audio signal.

[0190] like Figure 3 As shown, the signal transmission system includes a signal transmission device 31 applied to the sending end vehicle system and a signal transmission device 32 applied to the receiving end vehicle system. The signal transmission system includes a sending end vehicle system, a sending end communication device, a receiving end communication device, and a receiving end vehicle system. The sending end vehicle system is connected to the sending end communication device, and the receiving end vehicle system is connected to the receiving end communication device. The sending end communication device is used to transmit analog audio signals, and the receiving end communication device is used to transmit analog audio signals. The signal transmission system includes:

[0191] The voice signal acquisition module 311 is used to acquire the voice signal of the user's voice input when the user performs voice input through the sending end communication device;

[0192] The digital content acquisition module 312 is used to perform voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal;

[0193] The audio signal encoding module 313 is used to perform audio encoding processing on the digital content information according to the corresponding relationship between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information;

[0194] The audio signal sending module 314 is used to send the analog audio signal to the sending end communication device, so that the sending end communication device sends the analog audio signal to the receiving end communication device.

[0195] The transmitting end communication device sends the analog audio signal to the receiving end communication device;

[0196] The receiving end communication device sends the analog audio signal to the receiving end vehicle system;

[0197] The audio signal decoding module 321 is used to, when receiving the analog audio signal sent by the receiving end communication device, perform audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal;

[0198] The digital content presenting module 322 is used to present the digital content information to the user.

[0199] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0200] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0201] The present application also provides a terminal device, such as Figure 4 As shown, the terminal device 4 includes: at least one processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the at least one processor 40, and the processor 40 implements the steps in any of the above-mentioned method embodiments when executing the computer program 42. The terminal device 4 can be a transmitting terminal device, or can also be a receiving terminal device.

[0202] An embodiment of the present application also provides a transmitting-end vehicle system, which comprises: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the transmitting-end vehicle system is connected to a transmitting-end communication device, wherein the transmitting-end communication device is used to transmit analog audio signals, and wherein the processor implements the steps of any of the above-mentioned method embodiments when executing the computer program.

[0203] An embodiment of the present application also provides a receiving-end vehicle system, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor. The receiving-end vehicle system is connected to a receiving-end communication device, and the receiving-end communication device is used to transmit analog audio signals. When the processor executes the computer program, the steps in any of the above-mentioned method embodiments are implemented.

[0204] The embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented. The computer-readable storage medium can be a computer-readable storage medium at the sending end, or a computer-readable storage medium at the receiving end.

[0205] The present application provides a computer program product, which, when executed on a mobile terminal, enables the mobile terminal to implement the steps in the above-mentioned method embodiments. The computer program product can be a sending end computer program product or a receiving end computer program product.

[0206] If the integrated unit is implemented in the form of 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 present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0207] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0208] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0209] In the embodiments provided in the present application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0210] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0211] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A signal transmission method, characterized in that: The signal transmission method is applied to a transmitting end vehicle system, the transmitting end vehicle system is connected to a transmitting end communication device, the transmitting end communication device is used to transmit an analog audio signal, and the signal transmission method includes: When the user performs voice input through the sending end communication device, a voice signal of the user's voice input is obtained; Performing voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal; According to the corresponding relationship between the frequency and the data value, the digital content information is subjected to audio coding processing to obtain an analog audio signal corresponding to the digital content information; The analog audio signal is sent to the transmitting communication device, so that the transmitting communication device sends the analog audio signal to the receiving communication device.

2. The signal transmission method according to claim 1, characterized in that: The step of performing audio encoding processing on the digital content information according to the correspondence between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information includes: Determine the frequency corresponding to the data value of each binary bit corresponding to the digital content information, if the data value of the binary bit corresponding to the digital content information is 0, determine the corresponding frequency to be a first frequency, if the data value of the binary bit corresponding to the digital content information is 1, determine the corresponding frequency to be a second frequency; According to the frequency corresponding to each binary bit, an analog audio signal corresponding to the digital content information is obtained.

3. The signal transmission method according to claim 1, characterized in that: The method further includes: Combining the voice signal and the analog audio signal into a voice-data mixed signal; The step of sending the analog audio signal to the transmitting end communication device so that the transmitting end communication device sends the analog audio signal to the receiving end communication device comprises: The voice-data mixed signal is sent to the transmitting end communication device, so that the transmitting end communication device sends the voice-data mixed signal to the receiving end communication device, wherein the voice-data mixed signal includes the analog audio signal.

4. The signal transmission method according to claim 3, characterized in that: The step of combining the voice signal and the analog audio signal into a voice data mixed signal comprises: The voice signal and the analog audio signal are combined into a voice data mixed signal in a manner that the voice signal corresponds to a first frequency range and the analog audio signal corresponds to a second frequency range.

5. A signal transmission method, characterized in that: The signal transmission method is applied to a receiving-end vehicle system, the receiving-end vehicle system is connected to a receiving-end communication device, the receiving-end communication device is used to transmit an analog audio signal, the receiving-end communication device receives the analog audio signal sent by a sending-end communication device, and the receiving-end communication device sends the analog audio signal to the receiving-end vehicle system. The signal transmission method includes: When receiving the analog audio signal sent by the receiving end communication device, performing audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal; The digital content information is presented to a user.

6. The signal transmission method according to claim 5, characterized in that: The step of performing audio decoding processing on the analog audio signal according to the correspondence between the frequency and the data value to obtain digital content information corresponding to the analog audio signal includes: Determine the data value of the binary bit corresponding to each frequency of the analog audio signal, if the detected frequency is the first frequency, determine the data value of the corresponding binary bit to be 0, if the detected frequency is the second frequency, determine the data value of the corresponding binary bit to be 1; According to the data value corresponding to each binary bit, the digital content information corresponding to the analog audio signal is obtained.

7. The signal transmission method according to claim 5, characterized in that: The receiving end communication device receives the voice data mixed signal sent by the sending end communication device, and the receiving end communication device sends the voice data mixed signal to the receiving end vehicle system. When the analog audio signal sent by the receiving end communication device is received, the analog audio signal is subjected to audio decoding processing according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal, including: When the voice data mixed signal sent by the receiving end communication device is received, the analog audio signal in the voice data mixed signal is subjected to audio decoding processing according to the corresponding relationship between frequency and data value to obtain digital content information corresponding to the analog audio signal.

8. A signal transmission method, characterized in that: The signal transmission method is applied to a signal transmission system, the signal transmission system includes a transmitting end vehicle system, a transmitting end communication device, a receiving end communication device, and a receiving end vehicle system, the transmitting end vehicle system is connected to the transmitting end communication device, the receiving end vehicle system is connected to the receiving end communication device, the transmitting end communication device is used to transmit an analog audio signal, and the receiving end communication device is used to transmit an analog audio signal. The signal transmission method includes: When the user performs voice input through the transmitting end communication device, the transmitting end vehicle system obtains the voice signal of the user's voice input; The sending end vehicle system performs voice analysis processing on the voice signal to obtain digital content information corresponding to the voice signal; The transmitting end vehicle system performs audio coding processing on the digital content information according to the corresponding relationship between the frequency and the data value to obtain an analog audio signal corresponding to the digital content information; The transmitting end vehicle system transmits the analog audio signal to the transmitting end communication device; The transmitting end communication device sends the analog audio signal to the receiving end communication device; The receiving end communication device sends the analog audio signal to the receiving end vehicle system; When receiving the analog audio signal sent by the receiving end communication device, the receiving end vehicle system performs audio decoding processing on the analog audio signal according to the corresponding relationship between the frequency and the data value to obtain the digital content information corresponding to the analog audio signal; The receiving end vehicle system presents the digital content information to the user.

9. A transmitting end vehicle system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: The transmitting-end vehicle system is connected to a transmitting-end communication device, and the transmitting-end communication device is used to transmit analog audio signals. When the processor executes the computer program, the method according to any one of claims 1 to 4 is implemented.

10. A receiving end vehicle system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: The receiving-end vehicle system is connected to a receiving-end communication device, and the receiving-end communication device is used to transmit analog audio signals. When the processor executes the computer program, the method described in any one of claims 5 to 7 is implemented.

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