阅读说明：本技术 带音频功能的可穿戴电子装置 (Wearable electronic device with audio function ) 是由 孙雷助 吴玉锦 于 2019-10-25 设计创作，主要内容包括：本公开提供了一种带音频功能的可穿戴电子装置,包括MCU1(第一微控制单元)、MCU2(第二微控制单元)、声音接收单元和声音输出单元。第一微控制单元设有双模蓝牙模块,双模蓝牙模块支持A2DP和HFP协议。第二微控制单元与第一微控制单元连接。声音接收单元通过切换装置可选择地与第一微控制单元或第二微控制单元连接。声音输出单元分别与第一微控制单元和第二微控制单元连接。声音输出单元包括音频功率放大器和扬声器；音频功率放大器分别与第一微控制单元和扬声器连接；扬声器的输出信号经分压后与第二微控制单元连接。本公开既具有续航较长及比较轻薄的优点,同时也扩展了音频功能,弥补了功能性可穿戴电子装置的潜在市场空缺。(The present disclosure provides wearable electronic device with audio function, including MCU1( MCU), MCU2 (second MCU), sound receiving unit and sound output unit, MCU is equipped with dual mode Bluetooth module, the dual mode Bluetooth module supports A2DP and HFP protocol, the second MCU is connected with MCU, the sound receiving unit is selectively connected with MCU or the second MCU through a switching device, the sound output unit is respectively connected with MCU and the second MCU, the sound output unit includes audio power amplifier and speaker, the audio power amplifier is respectively connected with MCU and speaker, the output signal of speaker is connected with the second MCU after voltage division.)

Wearable electronic device with audio function of , characterized by that includes:

an th MCU, wherein the th MCU is provided with a dual-mode Bluetooth module, and the dual-mode Bluetooth module supports A2DP and HFP protocols;

the second micro control unit is connected with the th micro control unit;

a sound receiving unit selectively connected with the th micro control unit or the second micro control unit through a switching device, and

and the sound output unit is respectively connected with the th micro control unit and the second micro control unit.

2. The wearable electronic device of claim 1, wherein the dual-mode bluetooth module has a BT mode and a BLE mode.

3. The wearable electronic device of claim 1, wherein the dual-mode bluetooth module is configured to communicatively couple with a communication terminal via HFP protocol;

the th micro control unit is used for receiving th sound data pushed by the communication terminal and transmitting th sound data to the sound output unit for external playing, and the th micro control unit is also used for receiving second sound data detected by the sound receiving unit and pushing the second sound data to the communication terminal.

4. The wearable electronic device of claim 1, wherein the sound output unit comprises an audio power amplifier and a speaker, the audio power amplifier is connected with the micro control unit and the speaker respectively, and an output signal of the speaker is connected with the second micro control unit after being divided.

5. The wearable electronic device of claim 1, further comprising a storage unit connected to the micro control unit for storing audio files for playback processing by the micro control unit.

6. The wearable electronic device of claim 5, wherein the micro control unit is used for reading the audio file of the storage unit, decoding the audio file and transmitting the decoded audio file to the sound output unit for play.

7. The wearable electronic device of claim 1, further comprising an accelerometer module and a gyroscope module, the accelerometer module and the gyroscope module being connected to the micro control unit for monitoring motion signals.

8. The wearable electronic device of claim 7, wherein the switching means causes the sound receiving unit to connect to the micro control unit by default;

the micro-control unit is also used for identifying the action of the wearer according to the motion signals monitored by the accelerometer module and the gyroscope module, and when the hand raising action is identified, the micro-control unit controls the switching device to connect the sound receiving unit to the second micro-control unit.

9. The wearable electronic device of claim 8, wherein the second micro-control unit is configured to receive third sound data detected by the sound receiving unit and perform hotword listening;

when the second mcu does not detect a hotword for a predetermined time, the rd mcu controls the switching device to connect the sound receiving unit to the th mcu.

10. The wearable electronic device of claim 9, wherein the second MCU detects a hotword within a predetermined time, and transmits the third sound data to the th MCU, and the th MCU transmits the third sound data to a communication terminal through the dual mode Bluetooth module and receives feedback data processed by the communication terminal.

Technical Field

The present disclosure relates to wearable electronic devices, and more particularly to a wearable electronic device with audio function.

Background

At present, wearable electronic devices including watches and bracelets can be roughly divided into two types from the aspects of solution and functions, wherein types of wearable electronic devices are smart watches, use high-performance processors to run intelligent operating systems (Watch OS, Android or Android Wear) and support various functions such as 4G voice call, maps, voice search and local music play.

Aiming at the existing functional watch, products with more functions are to be developed while the advantages of the existing functional watch are maintained.

Disclosure of Invention

To solve or at least alleviate at least of the above technical problems, the present disclosure provides wearable electronic device with audio functionality.

According to aspects of the present disclosure, an audio-enabled wearable electronic device, comprising:

an th MCU, wherein the th MCU is provided with a dual-mode Bluetooth module, and the dual-mode Bluetooth module supports A2DP and HFP protocols;

the second micro control unit is connected with the th micro control unit;

a sound receiving unit selectively connected with the th micro control unit or the second micro control unit through a switching device, and

and the sound output unit is respectively connected with the th micro control unit and the second micro control unit.

According to at least embodiments of the present disclosure, the dual mode bluetooth module has a BT mode and a BLE mode.

According to at least embodiments of the present disclosure, the dual-mode bluetooth module is used for performing communication connection with a communication terminal through HFP protocol;

the th micro control unit is used for receiving th sound data pushed by the communication terminal and transmitting th sound data to the sound output unit for external playing, and the th micro control unit is also used for receiving second sound data detected by the sound receiving unit and pushing the second sound data to the communication terminal.

According to at least embodiments of the present disclosure, the sound output unit comprises an audio power amplifier and a speaker, the audio power amplifier is connected to the micro control unit and the speaker respectively, and an output signal of the speaker is divided and then connected to the second micro control unit.

According to at least embodiments of the present disclosure, the audio file playing device further includes a storage unit connected to the micro control unit for storing audio files for playing processing by the micro control unit.

According to at least embodiments of the present disclosure, the mcu is configured to read the audio file in the storage unit, decode the audio file, and send the decoded audio file to the sound output unit for play.

According to at least embodiments of the present disclosure, the device further comprises an accelerometer module and a gyroscope module, wherein the accelerometer module and the gyroscope module are connected with the micro control unit for monitoring the motion signal.

According to at least embodiments of the present disclosure, the switching means causes the sound receiving unit to connect to the micro control unit by default;

the micro-control unit is also used for identifying the action of the wearer according to the motion signals monitored by the accelerometer module and the gyroscope module, and when the hand raising action is identified, the micro-control unit controls the switching device to connect the sound receiving unit to the second micro-control unit.

According to at least embodiments of the present disclosure, the second micro control unit is configured to receive the third sound data detected by the sound receiving unit and perform hotword listening;

when the second mcu does not detect a hotword for a predetermined time, the rd mcu controls the switching device to connect the sound receiving unit to the th mcu.

According to at least embodiments of the present disclosure, when the second mcu detects a hotword within a predetermined time, the third sound data is transmitted to the mcu, and the mcu is configured to transmit the third sound data to a communication terminal through the dual mode bluetooth module and receive feedback data processed by the communication terminal.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of embodiments of the wearable electronic device with audio function according to the present disclosure, wherein only the hardware structure related to the audio function is shown, and other components such as the screen are not shown.

Detailed Description

The present disclosure will now be described in further detail with reference to the drawings and examples, it being understood that the specific embodiments herein described are for purposes of illustration only and are not intended to limit the disclosure.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

At present, similarly, a watch or a bracelet with the function of detecting physiological parameters of a human body is called a functional wearable electronic device, an MCU (micro control unit) is used as a main controller, only MCUs are adopted, communication is carried out between BLE (Bluetooth low power consumption) and communication terminals such as mobile phones, the simple BLE does not support protocols of A2DP and HFP, the function of connecting a Bluetooth headset to listen to songs or make calls cannot be achieved, the simple BLE can only complete push messages and synchronize data, and even some high-resolution screens are arranged, the functional problems of voice call, local music playing and voice search cannot be solved.

According to the aspects of the present disclosure, wearable electronic device with Audio function includes a th microcontrol Unit, a second microcontrol Unit, a sound receiving Unit and a sound output Unit, wherein the microcontrol Unit (MCU), also called Single Chip Microcomputer (Single Chip Microcomputer) or a Single Chip Microcomputer, properly reduces the frequency and specification of a Central Processing Unit (CPU), and integrates a memory (memory), a counter (Timer), a USB, a/D conversion, UART, PLC, DMA and other peripheral interfaces, even an LCD driving circuit on a Single Chip to form a Chip-level computer, which performs different combination control for different application occasions, such as the control of a mobile phone, a PC peripheral, a remote controller and the like, because the processing capability of the MCU is not very strong, the present wearable electronic device adopts a Single MCU to assist a Single MCU to realize the functions of voice call and voice search, wherein the microcontrol Unit 4 th microcontroller module is provided with a bluetooth module, a microcontroller module A2 is connected to a bluetooth transceiver module, a bluetooth transceiver module, a microphone module.

This is disclosed through setting up main MCU and supplementary MCU to and corresponding sound receiving element and sound output unit, can be under the structural framework who keeps current functional wearable electronic device to adopt MCU, realize the function of voice conversation, local music broadcast and pronunciation search, both can have the advantage that the continuation of the journey is longer and comparatively frivolous, also expanded the audio frequency function simultaneously, compensatied functional wearable electronic device's potential market vacancy.

In the following, a wearable electronic device is taken as an example, and several different embodiments of the wearable electronic device of the present disclosure are described in detail with reference to the drawings, respectively, it should be understood by those skilled in the art that although the description is made with reference to a functional watch, the technical features embodied in the innovative concepts are also applicable to other functional wearable electronic devices.

In embodiments of the present disclosure, the dual-mode bluetooth module is used for performing communication connection with the communication terminal through HFP protocol, the micro control unit is used for receiving sound data pushed by the communication terminal and transmitting sound data to the sound output unit for external playing, and the micro control unit is also used for receiving second sound data detected by the sound receiving unit and pushing the second sound data to the communication terminal.

In embodiments of the present disclosure, the Audio output unit includes an Audio power amplifier (Audio PA) and a Speaker (Speaker), the Audio power amplifier is connected to the th micro-control unit and the Speaker, respectively, the output signal of the Speaker is divided and then connected to the second micro-control unit, specifically, since the MCU generally has no analog Audio interface and cannot directly drive the Speaker, the MCU generally is an I2S interface, and transmits a digital Audio signal, the Audio PA can drive the Speaker, the data port of the Audio power amplifier is connected to the th micro-control unit through the I2S interface, the configuration port of the Audio power amplifier is connected to the th micro-control unit through the SPI or I2C interface, and the rd micro-control unit can configure the operating parameters of the Audio PA through this interface.

In embodiments of the present disclosure, the wearable electronic device further includes a storage unit connected to the th mcu for storing audio files for playing and processing by the th mcu.

, the th micro control unit is used for reading the Audio files in the storage unit and decoding the Audio files and then sending the Audio files to the sound output unit for playing, playing modes are that the th micro control unit obtains the music source files from the flash, after decoding, the Audio data are transmitted to the Audio PA through I2S, and then the Audio data are sounded through a speeder to play the music files, and playing modes are that the music is played through a Bluetooth headset.

In embodiments of the present disclosure, the wearable electronic device further includes an Accelerometer (Accelerometer) module and a Gyroscope (Gyroscope) module, which are connected to the th micro control unit for monitoring the motion signal.

, the switching device connects the sound receiving unit to the micro control unit by default, which is the connection mode used in most of the time during the ordinary use (including voice call and local music playing). the micro control unit is also used to identify the action of the wearer according to the movement signals monitored by the accelerometer module and the gyroscope module, for example, to identify the action such as step counting and hand lifting, when the hand lifting action is identified, the micro control unit controls the switching device to connect the sound receiving unit to the second micro control unit.

And , the second mcu is configured to receive the third sound data detected by the sound receiving unit and perform hotword listening, when the second mcu does not detect a hotword within a predetermined time (e.g., the time can be set to 5s), which indicates that the user is not raising his hand for speaking the hotword command, the mcu controls the switching device to connect the sound receiving unit to the mcu and return to the default connection state.

, when the second MCU detects the hotword within a predetermined time (e.g. the time can be set to 5s), it transmits the third sound data to the MCU, and the MCU transmits the third sound data to the communication terminal through the dual mode Bluetooth module and receives the feedback data processed by the communication terminal.

Referring to the schematic diagram of embodiments shown in fig. 1, exemplary embodiments of the present disclosure include MCU1 (as a th micro control unit), MCU2 (as a second micro control unit), Audio PA, Speaker, digital MIC, single pole double throw switch, external flash, and Accelerometer/gyrocope chip, Audio PA and Speaker serve as sound output units, digital MIC serves as a sound receiving unit, single pole double throw switch serves as a switching device, external flash serves as a storage unit, MCU1 serves as a main control unit including a dual mode bluetooth dual mode module, supporting A2 BT DP and HFP protocols, MCU2 uses a bluetooth low power consumption mode, may use a single mode MCU in an existing watch function, serves as an auxiliary control unit, MCU1 and MCU 8 communicate with each other through a qsbt peripheral interface, MCU1 is connected to the MCU PA through an I2 interface S interface, an Audio MCU is configured through an I2 interface C or an Audio PA interface, an Audio switch is configured to connect to an Audio switch, a serial SPI switch, a signal is connected to an ADC C, connected to an ADC, connected to an Audio switch, and connected to an ADC, and connected to a serial SPI switch, and connected to a microcontroller.

The following respectively describes the flows of voice call, local music playing and voice search by using the wearable electronic device of the present disclosure.

The specific process of the voice call is that under the normal standby condition, a watch is connected with a mobile phone through Bluetooth, the watch can receive message push of the mobile phone, synchronous data and the like, a sound receiving unit at the moment is connected to a th micro control unit in a default mode, if the mobile phone calls in, the watch end receives the push of the phone, the user is reminded of incoming call through vibration or sound, the user can answer the call through the mobile phone, if the mobile phone answers the call, a phone answering interface at the watch end disappears (the function is realized in the existing product and belongs to the general technology), the user can normally make the call through the mobile phone, when the user inconveniently takes the mobile phone or wants to make the call through a watch, the user can click on the answering interface of the watch, the MCU 387 protocol is operated, the telephone sound is output to a real microphone S through an I interface, then the watch is enabled to be a Bluetooth device (the Bluetooth device relative to the mobile phone at the moment), the watch is enabled to control the phone, such as the call is enabled, the watch is enabled to be enabled, the Audio device, the Audio receiving interface is enabled to be enabled to receive echo sound through an Audio microphone 6778 after the Audio microphone is enabled, the Audio receiving microphone is enabled, the Audio microphone is enabled to be enabled.

The echo cancellation process includes that speker plays voice of the opposite party, when a user makes a call, the voice of the user and the voice played by the speker are received by the digital MIC, but the voice of the opposite party is not needed, so the voice of the speker needs to be output to the MCU1 through an I2S interface, the MCU1 receives the data of the digital MIC, processes the data with the data returned by the Audio PA, and the echo is cancelled through an echo cancellation algorithm (the algorithm is adopted on the current mobile phone), so that the voice played by the speker in the digital MIC is really spoken by the user.

The specific process of playing the local music comprises the following steps: the MCU1 is connected with the external flash through QSPI (queuing serial peripheral interface), and the user can synchronize the music file into the flash of the MCU1 through the Bluetooth of the mobile phone. The music files are synchronized to the external flash in the watch, a USB interface can be used besides the Bluetooth, and the music files can be led into the external flash through the PC no matter whether the MCU1 or the MCU2 supports the USB.

the mode is that music is played through a spaker, the MCU1 obtains a music source file from an external flash, after decoding, Audio data are transmitted to the Audio PA through an I2S interface, and then the music file is played through sound production of the spaker.

The second mode is through bluetooth headset broadcast music, and MCU 1's bimodulus bluetooth module passes through A2DP agreement and connects bluetooth headset, transmits audio data to bluetooth headset, and it need not take the cell-phone to listen to the song when realizing the motion, only lean on watch and bluetooth headset can.

The specific process of voice search is as follows: the voice search function comprises three sub-functions of TTS broadcast, hotword awakening and TTS broadcast interruption.

In order to avoid the problems that the power consumption is increased and false triggering is easy to occur in real-time hotword monitoring, the MCU1 detects the movement of the watch after the watch is worn by a user through the Accelerometer and the Gyroscope, and is used for realizing action identification such as step counting, hand lifting and the like. The hand-lifting bright screen is a technology commonly used for wearable equipment at present, and the implementation process of the technology is not described here.

When the Accelerometer and the Gyroscope recognize the hand-lifting action, the hand-lifting and the screen lighting are firstly carried out, then the digital MIC is switched and connected to the MCU2 through the single-pole double-throw switch, and the MCU2 starts the hot word monitoring. The preset time for monitoring can be 5s, when no hot word is detected in the next 5s, the user is not supposed to do voice search, only the user raises the hand and lights the screen, the digital MIC is switched and connected to the MCU1 through the single-pole double-throw switch, and the hot word monitoring is stopped.

When a hotword is detected in the next 5s, the MCU2 informs the MCU1 that the hotword is detected, and the screen switches to a voice search interface, so that the user perceives that the watch has recognized that the user has spoken the hotword and the user can speak the next content. In addition to the screen switching to the voice search interface, the MCU1 may also play, for example: an alert tone such as "hey", "i am" tells the user that the watch has recognized the hotword.

At this time, a user can say contents that the user wants to say, such as voice search data "weather today", the MCU2 obtains Audio data collected by the digital MIC, processes and compresses the Audio data, transmits the Audio data to the MCU1 through the SPI, transmits the Audio data to the mobile phone through the bluetooth by the MCU1, transmits the data to the cloud through natural voice processing, recognizes the data, returns the data to the MCU1 through the bluetooth after searching, converts the data into Audio data by the MCU1 through a TTS algorithm, transmits the Audio data to the Audio PA through the I2S interface, and drives the speker to broadcast the contents, and displays the search result on the screen, for example, "weather today in beijing is clear, and the air temperature is 20-30 degrees".

th watch turns off TTS broadcast immediately by a vertical hand, when the watch recognizes the vertical hand movement, the watch closes the voice search interface and returns to a standby state, and the second watch has a built-in hotword interruption function, such as 'stop', and stops TTS broadcast immediately when the MCU2 detects the hotword.

In the process of playing TTS by the watch, the MCU2 keeps a hotword monitoring state directly, as described above, echo cancellation is required for sound reception by the digital MIC, but the I2S interface of the audio PA is not connected to the MCU2, so that an analog signal output by a spearker needs to be input to an ADC pin of the MCU2 after voltage division, the output signal of the spearker is collected by the ADC, and the sound received by the digital MIC and the sound received by the MCU2 pass through an echo cancellation algorithm to judge whether the MCU2 detects an interrupted hotword of the TTS.

From the above description, this disclosure can realize the function of voice conversation, local music broadcast and voice search under keeping the current wearable electronic device of functional to adopt the structural framework of MCU through setting up main MCU and supplementary MCU to and corresponding sound receiving element and sound output unit, both can have the advantage that the continuation of the journey is longer and comparatively frivolous, has also expanded the audio frequency function simultaneously, has compensatied the potential market vacancy of the wearable electronic device of functional.

In addition, each functional unit in the embodiments of the present disclosure may be integrated into processing modules, or each unit may exist alone physically, or two or more units are integrated into modules.

In the description herein, references to the terms " embodiments/manners," " embodiments/manners," "examples," "specific examples," or " examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least embodiments/manners or examples of the application.

Thus, a feature defined as "", "second" may or may not include at least of that feature.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.