Audio control circuit and audio control equipment

Abstract

The utility model discloses an audio control circuit and audio control equipment, and the audio control circuit comprises a first integrated circuit which comprises a first main control circuit, a first communication circuit and a first audio playing circuit, and the first main control circuit is used for adopting a first communication protocol to be in communication connection with a first intelligent terminal; a first audio signal sent by the first intelligent terminal is received and played; the second integrated circuit comprises a second master control circuit, a second communication circuit and a first communication interface, the second communication circuit is in communication connection with the first communication circuit by adopting a second communication protocol, and the first communication interface is used for being in communication connection with a second intelligent terminal so as to receive and send a second audio signal sent by the second intelligent terminal to the second master control circuit; forwarding to the first audio playing circuit for playing the number; the communication delay of the second communication protocol is lower than that of the first communication protocol. By means of the mode, the audio control circuit can be effectively compatible with playing of audio signals of two different communication paths.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an audio control circuit and an audio control device. Background Art

[0002] With the rapid development of wireless audio technology, smart audio hardware is becoming more and more popular among consumers. Each scenario will have different hardware requirements. For example, in general scenarios, users will choose TWS (True Wireless Stereo) headphones, or smart watches, smart phones, or smart glasses, etc.; in gaming scenarios, users have particularly high requirements for wireless audio latency, so special audio playback devices are needed.

[0003] However, traditional smart audio hardware, or the audio control circuit in the smart audio hardware, is not compatible with the playback of audio signals from two different communication paths, especially it is unable to effectively meet the needs of normal communication and audio playback with general electronic devices while achieving low-latency wireless audio. Utility Model Content

[0004] The present application provides an audio control circuit and an audio control device, which can solve the problem that the audio control circuit in the prior art is not compatible with the playback of audio signals of two different communication paths, especially the problem that it is unable to effectively meet the needs of normal communication and audio playback with general electronic devices while achieving low-latency wireless audio.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide an audio control circuit, wherein the audio control circuit includes: a first integrated circuit, including a first main control circuit, a first communication circuit and a first audio playback circuit, the first main control circuit is connected to the first communication circuit and the first audio playback circuit, and is used to communicate with the first smart terminal using a first communication protocol to receive a first audio signal sent by the first smart terminal, and send the first audio signal to the first audio playback circuit, so that the first audio playback circuit plays the first audio signal; a second integrated circuit, including a second main control circuit, a second communication circuit and a first communication interface, the second main control circuit is connected to the second communication circuit and the first communication interface, the second communication circuit is connected to the first communication circuit using a second communication protocol, and the first communication interface is used to communicate with the second smart terminal to receive a second audio signal sent by the second smart terminal, and send the second audio signal to the second main control circuit, so as to be sent to the first audio playback circuit via the second main control circuit, the second communication circuit, the first communication circuit and the first main control circuit in sequence, so that the first audio playback circuit plays the second audio signal; wherein the communication delay corresponding to the second communication protocol is lower than the communication delay corresponding to the first communication protocol.

[0006] Among them, the first integrated circuit also includes a first sound transmission circuit, and the second integrated circuit also includes a second communication interface. The first sound transmission circuit is connected to the first main control circuit, and the second communication interface is communicatively connected to the second main control circuit and is used to connect to the speaker playback terminal. The first sound transmission circuit is used to obtain audio, convert the audio into a third audio signal, and then send it to the first main control circuit, so as to send it to the speaker playback terminal via the first communication circuit, the second communication circuit, and the second main control circuit in sequence, so that the speaker playback terminal plays the third audio signal.

[0007] The first integrated circuit also includes a first touch circuit connected to the first main control circuit, and the first touch circuit is used to receive user touch commands and send the user touch commands to the first main control circuit to adjust the working state of the first main control circuit.

[0008] The first integrated circuit further includes a first identity recognition circuit, which is connected to the first main control circuit. The first main control circuit detects the signal to be detected in the first identity recognition circuit to determine the identity of the first integrated circuit using the signal to be detected.

[0009] The first integrated circuit also includes a first display circuit, which is connected to the first main control circuit. The first display circuit receives a display instruction sent by the first main control circuit based on the current communication state, and performs sound and light display in response to the display instruction.

[0010] The first integrated circuit further includes a first charging circuit, which is connected to the first main control circuit and is used to connect to a power supply so as to charge the first main control circuit using the power supply.

[0011] Among them, the first integrated circuit also includes a wearing detection circuit, which is connected to the first main control circuit. The wearing detection circuit is used to detect the current wearing state, generate a start-stop instruction based on the current wearing state, and send the start-stop instruction to the first main control circuit to start or stop the first main control circuit.

[0012] The second integrated circuit also includes a key circuit, which is connected to the second main control circuit. The key circuit is used to receive user key commands and send the user key commands to the second main control circuit to start or stop the second main control circuit.

[0013] Among them, the audio control circuit also includes a third integrated circuit, the third integrated circuit includes a third main control circuit, a third communication circuit and a second audio playback circuit, the third main control circuit is connected to the third communication circuit and the second audio playback circuit, and is used to adopt the first communication protocol to communicate and connect to the first smart terminal, so as to synchronously receive the first audio signal sent by the first smart terminal with the first main control circuit, and send the first audio signal to the second audio playback circuit, so that the second audio playback circuit plays the first audio signal synchronously with the first audio playback circuit.

[0014] To solve the above technical problems, another technical solution adopted in the present application is: to provide an audio control device, wherein the audio control device includes a first electronic device and a second electronic device, the first electronic device includes a first shell and a first integrated circuit connected to the first shell, the first integrated circuit includes a first communication circuit, the second electronic device includes a second shell and a second integrated circuit connected to the second shell, the second integrated circuit includes a second communication circuit, and the second communication circuit is communicatively connected to the first communication circuit; wherein the first integrated circuit is the first integrated circuit as described in any one of the above items, and the second integrated circuit is the second integrated circuit as described in any one of the above items.

[0015] The beneficial effect of the present application is as follows: Different from the prior art, the first main control circuit of the first integrated circuit in the audio control circuit provided by the present application is connected to the first communication circuit and the first audio playback circuit, and is used to adopt the first communication protocol to communicate and connect to the first smart terminal, so as to receive the first audio signal sent by the first smart terminal, and send the first audio signal to the first audio playback circuit, so that the first audio playback circuit plays the first audio signal, and the second main control circuit in the second integrated circuit is connected to the second communication circuit and the first communication interface, the second communication circuit adopts the second communication protocol to communicate and connect to the first communication circuit, the first communication interface is used to communicate and connect to the second smart terminal, so as to receive the second audio signal sent by the second smart terminal, and send the second audio signal to the second main control circuit, so as to be sent to the first audio playback circuit via the second communication circuit, the first communication circuit, and the first main control circuit in sequence, so that the first audio playback circuit plays the second audio signal, and the communication delay corresponding to the second communication protocol is lower than the communication delay corresponding to the first communication protocol, so that it can effectively be compatible with the playback of audio signals of two different communication paths, and while realizing low-latency wireless audio, it can effectively meet the requirements of normal communication and audio playback with general electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work. Among them:

[0017] Figure 1 It is a structural schematic diagram of the first implementation mode of the audio control circuit of the present application;

[0018] Figure 2 It is a structural schematic diagram of a second embodiment of the audio control circuit of the present application;

[0019] Figure 3 It is a structural schematic diagram of a third embodiment of the audio control circuit of the present application;

[0020] Figure 4 yes Figure 3 A structural diagram of a specific application scenario of a mid-range audio control circuit;

[0021] Figure 5 yes Figure 3 A structural diagram of another specific application scenario of the mid-frequency control circuit;

[0022] Figure 6 It is a structural diagram of an implementation scheme of an audio control device of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. The following embodiments that do not conflict can be combined arbitrarily.

[0024] See also Figure 1 , Figure 1 1 is a schematic diagram of the structure of the first embodiment of the audio control circuit of the present application. In this embodiment, the audio control circuit 10 specifically includes: a first integrated circuit 11 and a second integrated circuit 12.

[0025] Among them, an audio control circuit 10 provided in the present application is specifically used in an audio playback device that needs to realize communication connections with different communication delays with external smart terminals corresponding to different application scenarios to receive and play corresponding audio signals. Of course, in other embodiments, the audio control circuit 10 can also be specifically used in industrial control equipment, communication equipment, computer equipment and other any other reasonable electronic equipment that needs to realize communication connections with different communication delays, and this embodiment does not limit this.

[0026] Specifically, the first integrated circuit 11 further includes a first main control circuit 111 , a first communication circuit 112 and a first audio playing circuit 113 .

[0027] In the electronic device system, the first main control circuit 111 is the core control center, and its functions and roles are crucial. The first main control circuit 111 not only connects the first communication circuit 112 and the first audio playback circuit 113, but also plays a key role in information interaction, audio transmission protocol, audio information processing algorithm, command control and execution during the system operation.

[0028] Among them, the first main control circuit 111 is also specifically used to establish a stable and reliable two-way communication link with the external first smart terminal 101 according to a preset first communication protocol, such as a standard Bluetooth communication protocol, Wi-Fi (wireless network communication), WAP (Wireless Application Protocol) or other wireless communication standards, that is, the first communication circuit 112 can specifically correspond to a Bluetooth communication circuit, or a wireless network communication circuit or other reasonable hardware circuit that can implement the wireless communication standard.

[0029] When the first intelligent terminal 101 needs to transmit an audio signal, it can use the established communication channel to send the first audio signal after encoding to the first main control circuit 111, so that the first main control circuit 111 can decode, synchronize and perform other necessary processing on the digital audio data according to a preset logic program. Then, the main control circuit guides the processed first audio signal to the first audio playback circuit 113 connected thereto.

[0030] The first audio playing circuit 113 is a module specifically responsible for converting digital audio signals into analog signals and finally driving a speaker or other audio output device to play sound, so as to play the first audio signal according to the instruction of the first main control circuit 111 .

[0031] Furthermore, the second integrated circuit 12 specifically further includes a second main control circuit 121, a second communication circuit 122 and a first communication interface 123. The second main control circuit 121 connects the second communication circuit 122 and the first communication interface 123 to utilize the second communication circuit 122 and the first communication interface 123 to achieve communication interaction with other circuits.

[0032] Specifically, the second main control circuit 121 uses an independent and compatible second communication protocol, such as 2.4G wireless transmission protocol, standard Bluetooth communication protocol, NFC (Near Field Communication) or other wired / wireless standards to exchange information with the first communication circuit 112 through the second communication circuit 122 connected thereto. At the same time, the system is equipped with a first communication interface 123 for docking with the second smart terminal 102.

[0033] When the second intelligent terminal 102 needs to transmit audio content, it can use this communication interface to send the second audio signal after encoding to the second main control circuit 121 according to the preset communication rules. After receiving the second audio signal, the second main control circuit 121 decodes it and converts the necessary data format. Subsequently, the second main control circuit 121 transmits the processed second audio signal to the first communication circuit 112 through the second communication circuit 122. Here, cross-protocol data intercommunication is realized between the two communication circuits, so that the second audio signal can cross different communication layers and be delivered from the second main control circuit 121 to the first main control circuit 111. As the core node in the entire audio signal path, the first main control circuit 111 will further guide the second audio signal to the associated first audio playback circuit 113 according to the preset control logic after receiving the second audio signal. So far, the second audio signal starts from the second intelligent terminal 102, passes through the multi-stage transmission process of the second main control circuit 121, the second communication circuit 122, the first communication circuit 112, and the first main control circuit 111, and finally successfully reaches the first audio playback circuit 113. After receiving the second audio signal forwarded by the first main control circuit 111 , the first audio playback circuit 113 performs digital-to-analog conversion and drives corresponding audio output devices such as speakers or headphones to play the second audio signal sent by the second smart terminal 102 .

[0034] Among them, the communication delay corresponding to the second communication protocol is lower than the communication delay corresponding to the first communication protocol, that is, the communication delay corresponding to the second communication circuit 122 and the first communication circuit 112 is lower than the communication delay corresponding to the first main control circuit 111 and the external first smart terminal 101, so that the first main control circuit 111 can effectively be compatible with two different communication paths, that is, the playback of the second audio signal sent by the second smart terminal 102 transmitted via the second integrated circuit 12 and the playback of the first audio signal sent by the first smart terminal 101, and while realizing low-latency wireless audio, it effectively meets the needs of normal communication and audio playback with general electronic devices, that is, the first smart terminal 101.

[0035] Optionally, the first communication protocol may specifically be a standard Bluetooth communication protocol, Wi-Fi, WAP, GSM (Global System for Mobile communications) protocol or any other reasonable wireless communication protocol, which is not limited in the present application.

[0036] Optionally, the second communication protocol can specifically be a 2.4G wireless transmission protocol, a standard Bluetooth communication protocol, NFC (Near Field Communication) or any other reasonable wireless communication protocol, or a wired communication protocol, and has a communication delay lower than the first communication protocol, which is not limited in this application.

[0037] Preferably, the first communication protocol is a standard Bluetooth communication protocol, the second communication protocol is a 2.4G wireless transmission protocol, and the communication delay corresponding to the second communication protocol is less than 30 ms (milliseconds).

[0038] Optionally, the first main control circuit 111 and the second main control circuit 121 can specifically be a chip, an MCU (MicroControl Unit) circuit, a CPU (Central Processing Unit), a single-chip microcomputer, a field programmable gate array, a programmable logic device, a discrete gate or transistor logic device, discrete hardware, or any other reasonable one or more of the circuit units having program and signal processing functions, and the present application does not limit this.

[0039] Preferably, the first main control circuit 111 and the second main control circuit 121 are main control chips supporting 2.4G wireless transmission protocol.

[0040] Optionally, the first communication interface 123 may specifically be a USB (Universal Serial Bus) interface, a serial communication interface, an asynchronous transmission standard interface, or any other reasonable communication interface, which is not limited in the present application.

[0041] Optionally, the first communication circuit 112 and the second communication circuit 122 can specifically be any reasonable antenna such as an FPC (Flexible Printed Circuit) antenna, a PCB (Printed Circuit Board) patch antenna or an onboard antenna, so as to independently perform wireless audio transmission, which is not limited in the present application.

[0042] Optionally, the first smart terminal 101 and the second smart terminal 102 can be the same terminal device or two different terminal devices, and can be any reasonable electronic device such as a smart phone, a personal computer, a tablet computer or a smart watch, and this application does not limit this.

[0043] In one embodiment, the first main control circuit 111 is specifically preset with a priority program, so that when the first main control circuit 111 synchronously receives the first audio signal and the second audio signal, the playback priority of the first audio signal and the second audio signal can be determined according to the priority program.

[0044] It is worth noting that the first integrated circuit 11 and the second integrated circuit 12 can be integrated in two independent electronic devices, or integrated in different components of the same electronic device, and a low-latency wireless communication protocol can be used to achieve communication connection, so that the second integrated circuit 12 can be used to effectively expand the signal function of the first integrated circuit 11, thereby effectively improving the compatibility and flexibility of the audio control circuit 10 to meet the application requirements of more scenarios, such as audio playback compatible with different communication paths, sharing and playback of audio resources between different smart terminals, and any other reasonable signal functions.

[0045] See also Figure 2 , Figure 2 1 is a schematic diagram of the structure of the second embodiment of the audio control circuit of the present application. In this embodiment, based on the first embodiment of the audio control circuit provided in the present application, the first integrated circuit 21 in the audio control circuit 20 specifically further includes a first sound transmission circuit 214, and the second integrated circuit 22 specifically further includes a second communication interface 224.

[0046] Specifically, the first sound transmission circuit 214 is a key component, which is directly connected to the first main control circuit 211, and its main function is to obtain the original audio signal from the environment, and appropriately process and convert the audio information to generate a third audio signal suitable for transmission and playback. When the audio content needs to be played, the first sound transmission circuit 214 first captures the audio signal in the environment through a built-in microphone or other sound collection device. Subsequently, the acquired audio is digitized, encoded and optimized using signal processing technology to generate a third audio signal and send it to the first main control circuit 211.

[0047] The first main control circuit 211 parses and controls the received third audio signal, and then uses the first communication circuit 212 to transmit the third audio data to the second communication circuit 222 using the second communication protocol, so as to send the third audio signal to the second main control circuit 221 via the second communication circuit 222 .

[0048] After receiving the third audio signal, the second main control circuit 221 processes it according to preset instructions and logic, and establishes a connection with an external speaker playback terminal through the second communication interface 224 connected to it, so as to send the third audio signal to the speaker playback terminal via the second communication interface 224, so that the speaker playback terminal can restore the third audio signal to a high-quality audio waveform and realize sound playback through its own speaker system.

[0049] Optionally, the speaker playback terminal may be any reasonable audio playback device such as a speaker or a loudspeaker, and this application does not limit this.

[0050] Optionally, the second communication interface 224 may be a 3.5 mm headphone jack, a USB interface, a serial communication interface, an asynchronous transmission standard interface or any other reasonable communication interface, which is not limited in the present application.

[0051] In one embodiment, the first integrated circuit 21 specifically further includes a first touch circuit 215, and the first touch circuit 215 is interconnected with the first main control circuit 211. Specifically, the first touch circuit 215, for example, a touch screen, a touch button or a touch panel, is used to detect the user's touch actions and convert these actions into corresponding touch command signals. When the user operates the touch interface, such as sliding, clicking or long pressing, the first touch circuit 215 can accurately capture and identify these operations, and send the received touch commands to the first main control circuit 211, so that the main control circuit adjusts its own operating state or controls the working state of other related components according to preset logical rules and program algorithms.

[0052] In one embodiment, the first integrated circuit 21 specifically also includes a first identity recognition circuit 216, which is connected to the first main control circuit 211. The first identity recognition circuit 216 can specifically be an RFID (Radio Frequency IDentification) chip, an encryption module or a similar identity authentication component, or a sub-circuit unit composed of circuit elements such as resistors and capacitors, so as to be connected to the first main control circuit 211.

[0053] Specifically, the main task of this identity recognition circuit is to store and / or generate a specific signal to be detected, which can represent the identity information of the first integrated circuit 21, such as a serial number, an authentication key or a unique security identifier, or a current signal or voltage signal of a specific size.

[0054] When the system is started or requires permission checks, security verification and other operations during operation, the first main control circuit 211 reads, samples or interactively obtains the signal to be detected in the first identity recognition circuit 216, so as to determine the identity attributes of the first integrated circuit 21 by analyzing and verifying the signal to be detected, ensuring that it is a legal and authorized component, or matches the preset execution program, and performs corresponding subsequent operations accordingly, such as unlocking advanced functions, matching preset configuration parameters, or connecting to higher-level security network services, executing preset audio control programs, etc.

[0055] In one embodiment, the first integrated circuit 21 specifically further includes a first display circuit 217, and the first display circuit 217 is connected to the first main control circuit 211. When the first main control circuit 211 monitors and processes information from each subsystem, it generates a corresponding display instruction according to the current communication state and other relevant conditions. This display instruction may include various types of data such as communication connection state, device operation mode, error code, operation prompt information, etc., which are used to guide the first display circuit 217 to perform corresponding sound and light display output.

[0056] In one embodiment, the first integrated circuit 21 specifically further includes a first charging circuit 218, which is directly connected to the first main control circuit 211 and is designed to be connected to an external power supply, such as an AC power adapter, a USB interface, or other types of chargers. Its core function is to properly convert and stabilize the electric energy obtained from the power supply to ensure that the voltage and current provided to the first main control circuit 211 meet its safe and stable operation requirements.

[0057] When the user connects the device to a power source, the first charging circuit 218 starts working, and through the built-in charging management chip and related circuit elements, it monitors the battery power, controls the charging speed and temperature and other parameters to ensure that the entire charging process is efficient and safe. At the same time, the first charging circuit 218 will transmit appropriate power to the first main control circuit 211 and its associated battery pack to continuously supply power or replenish power to the core components of the device, thereby maintaining the normal operation of the device and extending its battery life. In this way, whether the device is in use or in standby mode, it can obtain timely and effective energy replenishment to respond to user operation instructions and service needs at any time.

[0058] In one embodiment, the first integrated circuit 21 specifically further includes a wearing detection circuit 219, which is a common functional module in smart wearable devices, and is mainly used to monitor in real time whether the user is wearing the device. Specifically, the wearing detection circuit 219 is connected to the first main control circuit 211, and senses and determines whether the device is in a correctly worn state through integrated sensors such as accelerometers, proximity sensors, somatosensory sensors or pressure sensors.

[0059] Among them, when the user wears the device, the wearing detection circuit 219 will capture the corresponding signal changes, and intelligently analyze the current wearing state based on these signals, and generate a start instruction when it is determined that the user has worn the device, and this instruction will be sent to the first main control circuit 211. After receiving the start instruction, the first main control circuit 211 will start the main functions of the device, such as turning on the display information, starting health data monitoring, playing music, or activating other preset functional modules. On the contrary, if the wearing detection circuit 219 senses that the user has taken off the device, such as the smart watch on the wrist leaves the skin, or the wireless headset on the ear leaves the ear canal, or the smart glasses are taken off, a stop instruction is generated and transmitted to the first main control circuit 211, so that the first main control circuit 211 performs the corresponding operation according to the design strategy, which may include turning off the screen, pausing data collection, entering standby mode to save power, or directly shutting down to protect user privacy and extend battery life. In this way, the purpose of automatically adjusting the working state of the device according to the actual wearing situation is achieved, and the user experience and the effective use of device resources are improved.

[0060] In one embodiment, the second integrated circuit 22 specifically further includes a key circuit 226, which plays the role of a user input interface in the electronic device and is connected to the second main control circuit 221. The key circuit 226 can be specifically composed of a series of key switches, a matrix keyboard or a touch sensing element, and its function is to obtain and identify the operation instructions issued by the user through physical keys or virtual keys. When the user presses a key, the key circuit 226 will sense this action and convert it into an electrical signal, and this signal will be encoded into corresponding key command information to send these user key commands to the second main control circuit 221, such as a microcontroller or a processor for parsing and processing, so that the second main control circuit 221 performs different operation tasks according to the received key command content, such as starting a specific functional module, switching interfaces, adjusting system settings, or starting or stopping certain operating states of the second main control circuit 221 itself.

[0061] In one embodiment, the second integrated circuit 22 specifically includes a second display circuit 225, and the second display circuit 225 is connected to the second main control circuit 221. When the second main control circuit 221 monitors and processes information from each subsystem, it generates a corresponding display instruction according to the current communication status and other relevant conditions. This display instruction may include various types of data such as communication connection status, device operation mode, error code, operation prompt information, etc., which are used to guide the second display circuit 225 to perform corresponding sound and light display output.

[0062] It is understandable that, in this embodiment, the first main control circuit 211, the first communication circuit 212, the first audio playback circuit 213, the second main control circuit 221, the second communication circuit 222 and the first communication interface 223 are respectively the same as the first main control circuit 111, the first communication circuit 112, the first audio playback circuit 113, the second main control circuit 121, the second communication circuit 122 and the first communication interface 123. For details, please refer to Figure 1 And the related text content will not be repeated here.

[0063] See also Figure 3 , Figure 3 3 is a schematic diagram of the structure of the third embodiment of the audio control circuit of the present application. This embodiment is based on the second embodiment of the audio control circuit provided in the present application, and the audio control circuit 30 specifically further includes a third integrated circuit 33.

[0064] Specifically, the third integrated circuit 33 includes a third main control circuit 331, a third communication circuit 332 and a second audio playback circuit 333. The third main control circuit 331 is connected to the third communication circuit 332 and docked with the second audio playback circuit 333. One of its core functions is to achieve synchronous communication with the first smart terminal 101 by adopting the same first communication protocol as the first main control circuit 311.

[0065] Specifically, when the first smart terminal 101 sends the first audio signal, both the first main control circuit 311 and the third main control circuit 331 can receive these data streams based on the preset first communication protocol, and after the third main control circuit 331 receives the first audio signal sent by the first smart terminal 101, the first audio signal is forwarded to the second audio playback circuit 333 connected thereto. The purpose of this is to allow the second audio playback circuit 333 to be synchronized with the first audio playback circuit 313 controlled by the first main control circuit 311, and to jointly decode and play the first audio signal, thereby achieving stereo effects, multi-room music playback or other synchronous playback requirements at different locations or different speakers. This synchronous playback mechanism greatly improves the user experience, allowing users to enjoy consistent and synchronized high-quality audio content in multiple spaces or when using multiple devices.

[0066] In some embodiments, the third integrated circuit 33 specifically further includes one or more of a second acoustic transmission circuit 334, a second touch circuit 335, a second identity recognition circuit 336, a third display circuit 337, and a second charging circuit 338, and the second acoustic transmission circuit 334, the second touch circuit 335, the third display circuit 337, and the second charging circuit 338 can be respectively the same as the first acoustic transmission circuit 314, the first touch circuit 315, the first display circuit 317, and the first charging circuit 318 in the first integrated circuit 31, and have the same connection relationship, for details, please refer to Figure 2 And the related text content will not be repeated here.

[0067] Optionally, the second identity identification circuit 336 and the first identity identification circuit 316 can specifically be two resistors with different resistance values, or only one of the second identity identification circuit 336 and the first identity identification circuit 316 is provided with a resistor, so that the third main control circuit 331 and the first main control circuit 311 can respectively sample and detect the voltage across each resistor and / or the current flowing through each resistor or a specific potential node to identify the third integrated circuit 33 and the first integrated circuit 31, and the present application does not limit this.

[0068] It can be understood that, in the present embodiment, the first main control circuit 311, the first communication circuit 312, the first audio playback circuit 313, the first sound transmission circuit 314, the first touch circuit 315, the first identity recognition circuit 316, the first display circuit 317, the first charging circuit 318, the wearing detection circuit 319, the second main control circuit 321, the second communication circuit 322, the first communication interface 323, the second communication interface 324, the second display circuit 325 and the key circuit 326 are respectively the same as the first main control circuit 211, the first communication circuit 212, the first audio playback circuit 213, the first sound transmission circuit 214, the first touch circuit 215, the first identity recognition circuit 216, the first display circuit 217, the first charging circuit 218, the wearing detection circuit 219, the second main control circuit 221, the second communication circuit 222, the first communication interface 223, the second communication interface 224, the second display circuit 225 and the key circuit 226. For details, please refer to Figure 2 And the related text content will not be repeated here.

[0069] It is worth noting that the third integrated circuit 33 can be specifically an electronic device independent of the first integrated circuit 31 and the second integrated circuit 32, or integrated in different components of an electronic device that is the same as the first integrated circuit 31 and / or the second integrated circuit 32, and adopts a low-latency wireless communication protocol to achieve communication connection with the second integrated circuit 32, so that the signal function of the third integrated circuit 33 can be effectively expanded by utilizing the second integrated circuit 32, thereby effectively improving the compatibility and flexibility of the audio control circuit 30 to meet the application requirements of more scenarios, such as audio playback compatible with different communication paths, sharing and playback of audio resources between different smart terminals, and any other reasonable signal functions.

[0070] For ease of understanding, Figure 4 As shown, Figure 4 yes Figure 3 A structural schematic diagram of a specific application scenario of the audio control circuit 30, taking the first integrated circuit 31 and the third integrated circuit 33 as hardware circuits in the left leg and the right leg of the smart glasses respectively, and the second integrated circuit 32 as a hardware circuit in an electronic device USB Dongle (software dog) plugged into the computer parallel port (print output port) or USB interface as an example, the first integrated circuit 31 and the third integrated circuit 33 can specifically use the 2.4G wireless transmission protocol to respectively realize wireless communication connection with the second integrated circuit 32, and use the standard Bluetooth protocol to realize wireless communication connection with the user's mobile phone, and the second integrated circuit 32 is also used to realize wired communication connection with a laptop or a game console through a USB interface.

[0071] It is worth noting that in the game scenario, users have relatively high requirements for the delay of wireless audio transmission. At present, the audio delay in the game scenario usually needs to be less than 30ms to have a better experience. However, the mainstream wireless audio headsets on the market, such as TWS (True Wireless Stereo, true wireless headsets), have an audio transmission delay greater than 100ms and cannot be used in game scenarios. At present, there are special wireless e-sports headsets on the market, which use a wireless private protocol transmission technology that can achieve low-latency transmission, but cannot be connected to the mobile phone Bluetooth, resulting in the inability to answer the phone in time when the phone calls. In addition, in the sound reinforcement scenario, the delay requirements are also relatively high, and different audio interfaces are required for the expansion of other devices. At present, teachers generally wear a small bee device for sound reinforcement during class. The small bee sound reinforcement device is heavy and inconvenient to wear.

[0072] Among them, the existing smart glasses that support traditional Bluetooth generally have a delay greater than 100ms, which cannot meet the audio experience of e-sports scenarios; when smart glasses use wireless private protocol transmission technology, they can achieve a low delay of 30ms, but they cannot connect to universal mobile phone devices, resulting in the inability to answer incoming calls in time; and in the scenario of teacher sound reinforcement, they generally wear a small bee sound reinforcement device, which is heavy and inconvenient to wear.

[0073] The above scheme integrates Bluetooth communication circuits in the left and right legs of the smart glasses to meet the normal communication and interaction with the user's mobile phone to answer calls, and can also expand functions through a USB Dongle, such as using a low-latency private 2.4G wireless transmission protocol to achieve communication connection with it, and using the USB Dongle to connect with a laptop or game console, as well as a sound reinforcement device, so that it can effectively be compatible with any reasonable low-latency audio effects under game scenarios or teaching demonstration scenarios, and meet the needs of sound reinforcement.

[0074] Specifically, first in the USB interface, that is, the first communication interface 323 output scene, for example, the user is playing games. The audio data of the laptop, or personal terminal, such as a mobile phone or a game console, is transmitted to the second integrated circuit 32, that is, the USB Dongle, through the USB interface, and the USB Dongle is then synchronously transmitted to the first integrated circuit 31 and the second integrated circuit 32, that is, the smart glasses, through the 2.4G wireless protocol. The speakers in the smart glasses, that is, the first audio playback circuit 313 and the second audio playback circuit 333, will synchronously emit sound, and the delay of the entire audio channel can be less than 30ms.

[0075] In the 3.5mm audio socket, that is, the output scenario of the second communication interface 324, the teacher wears smart glasses. The microphone signal in the smart glasses is transmitted to the USB Dongle via 2.4G wireless, so that the USB Dongle sends it to the speaker through the 3.5mm headphone socket for sound amplification, and the entire delay can be less than 10ms.

[0076] Both of the above scenarios achieve low-latency audio effects through a low-latency wireless transmission system consisting of a USB Dongle and smart glasses.

[0077] And in the dual-mode online mode, the user's mobile phone can communicate with the smart glasses through the standard Bluetooth communication protocol. At the same time, the user's computer or game console can also communicate with the smart glasses through the USB Dongle. In this scenario, the system composed of smart glasses and USB Dongle will support 2 modes online at the same time. In this way, the user's smart glasses can not only achieve low-latency audio effects through the USB Dongle, but also receive information from the mobile phone through standard Bluetooth at the same time, such as ringtones. In this scenario, it can effectively meet the user's needs for both low-latency audio effects and real-time audio signals from the mobile phone.

[0078] Please continue reading Figure 5 , Figure 5 yes Figure 3 A schematic structural diagram of another specific application scenario of the mid-frequency control circuit 30.

[0079] When the smart glasses are in dual-mode online mode, that is, supporting both the 2.4G wireless transmission protocol and the standard Bluetooth protocol, the smart glasses can also receive audio through these two modes for superimposed mixing and processing, and then output it to the speaker. As shown in the following figure:

[0080] It is worth mentioning that the audio superposition algorithm is a universal mixing algorithm that can enable the speaker to play two modes of audio at the same time.

[0081]

[0082] As can be seen from the table above, in different user scenarios, the working modes and corresponding effects of smart glasses are as follows:

[0083] 1. Smart glasses products consist of two parts: the glasses body and the USB Dongle.

[0084] 2. 2.4G wireless transmission is used between the glasses and the Dongle to achieve low-latency audio transmission.

[0085] 3. USB Dongle supports USB interface output and 3.5mm audio jack audio output.

[0086] 4. Smart glasses can support both 2.4G wireless transmission protocol and standard Bluetooth protocol.

[0087] 5. 2.4G audio and standard Bluetooth audio are superimposed and mixed for output.

[0088] In the above solution, the smart glasses product supports 2.4G and standard Bluetooth dual-mode online operation at the same time. In the game scene, it can not only experience low-latency audio effects, but also connect to the mobile phone through standard Bluetooth to ensure that important mobile phone signals will not be missed. In this way, when answering a call, the user does not need to pause the game or remove the glasses to answer the call, which effectively improves the user experience.

[0089] In other embodiments, the first integrated circuit 31 and the third integrated circuit 33 may specifically be integrated circuits inside different components of any reasonable smart wearable device such as a neck massager or a smart necklace, and this application does not limit this.

[0090] In other embodiments, the second integrated circuit 32 may also be integrated in a sound playback terminal, such as a smart speaker or a loudspeaker, or any other reasonable electronic device, which is not limited in the present application.

[0091] This application also specifically adopts an audio control device, see Figure 6 , Figure 6 4 is a schematic diagram of the structure of an embodiment of the audio control device of the present application. In this embodiment, the audio control device 40 specifically includes a first electronic device 41 and a second electronic device 42.

[0092] Among them, the first electronic device 41 includes a first shell 411 and a first integrated circuit 412 connected to the first shell 411, the first integrated circuit 412 includes a first communication circuit 4121, the second electronic device 42 includes a second shell 421 and a second integrated circuit 422 connected to the second shell 421, the second integrated circuit 422 includes a second communication circuit 4221, and the second communication circuit 4221 is communicatively connected to the first communication circuit 4121.

[0093] In one embodiment, the first electronic device 41 specifically also includes a third shell (not shown in the figure) and a third integrated circuit (not shown in the figure) connected to the third shell, the third integrated circuit includes a third communication circuit (not shown in the figure), and the second communication circuit 4221 is communicatively connected to the third communication circuit.

[0094] Optionally, the first electronic device 41 may be any reasonable smart wearable device such as smart glasses, a neck massager or a smart necklace, and this application does not limit this.

[0095] Optionally, the second electronic device 42 may be any reasonable electronic device such as a USB dongle or a smart speaker, and this application does not limit this.

[0096] It should be noted that the first integrated circuit 412 described in this embodiment is the first integrated circuit 11, the first integrated circuit 21 or the first integrated circuit 31 described in any one of the above embodiments; the second integrated circuit 422 is the second integrated circuit 12, the second integrated circuit 22 or the second integrated circuit 32 described in any one of the above embodiments; the third integrated circuit is the third integrated circuit 33 described in any one of the above embodiments, for details, please refer to Figure 1-Figure 5 And the related text content will not be repeated here.

[0097] Different from the prior art, the first main control circuit of the first integrated circuit in the audio control circuit provided in the present application is connected to the first communication circuit and the first audio playback circuit, and is used to communicate and connect to the first smart terminal using the first communication protocol to receive the first audio signal sent by the first smart terminal, and send the first audio signal to the first audio playback circuit, so that the first audio playback circuit plays the first audio signal, and the second main control circuit in the second integrated circuit is connected to the second communication circuit and the first communication interface, the second communication circuit is communicated and connected to the first communication circuit using the second communication protocol, the first communication interface is used to communicate and connect to the second smart terminal to receive the second audio signal sent by the second smart terminal, and send the second audio signal to the second main control circuit, so that it is sent to the first audio playback circuit via the second communication circuit, the first communication circuit, and the first main control circuit in sequence, so that the first audio playback circuit plays the second audio signal, and the communication delay corresponding to the second communication protocol is lower than the communication delay corresponding to the first communication protocol, so that it can effectively be compatible with the playback of audio signals of two different communication paths, and while realizing low-latency wireless audio, it can effectively meet the requirements of normal communication and audio playback with general electronic devices.

[0098] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An audio control circuit, characterized in that: The audio control circuit comprises: A first integrated circuit includes a first main control circuit, a first communication circuit, and a first audio playback circuit, wherein the first main control circuit is connected to the first communication circuit and the first audio playback circuit, and is used to communicate with a first smart terminal using a first communication protocol to receive a first audio signal sent by the first smart terminal, and send the first audio signal to the first audio playback circuit, so that the first audio playback circuit plays the first audio signal; The second integrated circuit includes a second main control circuit, a second communication circuit and a first communication interface, the second main control circuit is connected to the second communication circuit and the first communication interface, the second communication circuit adopts a second communication protocol to communicate with the first communication circuit, and the first communication interface is used to communicate with a second intelligent terminal to receive a second audio signal sent by the second intelligent terminal, and send the second audio signal to the second main control circuit, so as to be sent to the first audio playback circuit via the second main control circuit, the second communication circuit, the first communication circuit and the first main control circuit in sequence, so that the first audio playback circuit plays the second audio signal; wherein, the communication delay corresponding to the second communication protocol is lower than the communication delay corresponding to the first communication protocol.

2. The audio control circuit according to claim 1, characterized in that: The first integrated circuit also includes a first sound transmission circuit, and the second integrated circuit also includes a second communication interface. The first sound transmission circuit is connected to the first main control circuit, and the second communication interface is communicatively connected to the second main control circuit and is used to connect to a speaker playback terminal. The first sound transmission circuit is used to obtain audio, convert the audio into a third audio signal, and then send it to the first main control circuit, so as to be sent to the speaker playback terminal via the first communication circuit, the second communication circuit, and the second main control circuit in sequence, so that the speaker playback terminal plays the third audio signal.

3. The audio control circuit according to claim 1, characterized in that: The first integrated circuit also includes a first touch circuit, which is connected to the first main control circuit. The first touch circuit is used to receive user touch instructions and send the user touch instructions to the first main control circuit to adjust the working state of the first main control circuit.

4. The audio control circuit according to claim 1, characterized in that: The first integrated circuit also includes a first identity recognition circuit, which is connected to the first main control circuit. The first main control circuit detects a signal to be detected in the first identity recognition circuit to determine the identity of the first integrated circuit using the signal to be detected.

5. The audio control circuit according to claim 1, characterized in that: The first integrated circuit also includes a first display circuit, which is connected to the first main control circuit. The first display circuit receives a display instruction sent by the first main control circuit based on a current communication state, and performs sound and light display in response to the display instruction.

6. The audio control circuit according to claim 1, characterized in that: The first integrated circuit also includes a first charging circuit, which is connected to the first main control circuit and is used to connect to a power supply so as to charge the first main control circuit using the power supply.

7. The audio control circuit according to claim 1, characterized in that: The first integrated circuit also includes a wearing detection circuit, which is connected to the first main control circuit. The wearing detection circuit is used to detect a current wearing state, generate a start-stop instruction based on the current wearing state, and send the start-stop instruction to the first main control circuit to start or stop the first main control circuit.

8. The audio control circuit according to any one of claims 1 to 7, characterized in that: The second integrated circuit also includes a key circuit, which is connected to the second main control circuit. The key circuit is used to receive user key instructions and send the user key instructions to the second main control circuit to start or stop the second main control circuit.

9. The audio control circuit according to any one of claims 1 to 7, characterized in that: The audio control circuit also includes a third integrated circuit, which includes a third main control circuit, a third communication circuit and a second audio playback circuit. The third main control circuit is connected to the third communication circuit and the second audio playback circuit, and is used to communicate with the first smart terminal using the first communication protocol, so as to synchronously receive the first audio signal sent by the first smart terminal with the first main control circuit, and send the first audio signal to the second audio playback circuit, so that the second audio playback circuit plays the first audio signal synchronously with the first audio playback circuit.

10. An audio control device, characterized in that: The audio control device comprises a first electronic device and a second electronic device, the first electronic device comprises a first housing and a first integrated circuit connected to the first housing, the first integrated circuit comprises a first communication circuit, the second electronic device comprises a second housing and a second integrated circuit connected to the second housing, the second integrated circuit comprises a second communication circuit, and the second communication circuit is communicatively connected to the first communication circuit; The first integrated circuit is the first integrated circuit as claimed in any one of claims 1 to 9, and the second integrated circuit is the second integrated circuit as claimed in any one of claims 1 to 9.

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