Audio transmission apparatus and audio system

Abstract

Disclosed in the present application are an audio transmission apparatus and an audio system. By means of a data transmission interface, a receiving apparatus of the audio transmission apparatus of the present application receives audio data sent by a sending device; by means of a data exchange apparatus, a physical transceiving apparatus receives the audio data transmitted by the receiving apparatus; and by means of a UWB transceiving apparatus of the physical transceiving apparatus, the audio data received by the physical transceiving apparatus is sent to a playing device, thereby realizing wireless transmission of the audio data between the sending device and the playing device. The audio transmission apparatus of the present application involves an ingenious structural design, facilitates audio conversion and transmission, increases the transmission speed of audio data, has low emitting power to reduce the power consumption of the audio transmission apparatus, has high anti-interference capability and high positioning precision, can be used for precisely searching for a device and positioning the device, is applicable to transmission of multi-channel audio data, and overcomes the defects of existing audio wireless transmission, including high power consumption, long delay and congestion of transmission channels during multi-channel transmission.

Description

Audio transmission device and audio system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 15, 2022, with application number 2023225258784 and application name “Audio Transmission Device and Audio System”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to an audio transmission device and an audio system. Background Art

[0003] With the continuous advancement of technology, wireless audio products are rapidly entering millions of households. Common wireless audio devices are based on 2.4G Bluetooth and WiFi technologies for audio transmission. Usage scenarios include audio transmission devices such as mobile phones, computers, and TV monitors transmitting audio data via Bluetooth or WiFi to playback devices such as speakers or headphones.

[0004] The advantages of 2.4G Bluetooth audio transmission are: high popularity, support for many devices, and low power consumption; the advantages of WiFi standard protocol audio transmission are high popularity, support for many devices, and high bandwidth;

[0005] However, all of the above audio transmission technologies have drawbacks. For example, 2.4G Bluetooth audio transmission can only transmit stereo or voice signals of ordinary sound quality, and if complex protocols are transmitted, it will cause long delays and congested transmission channels when there are many devices. WiFi standard protocol transmission has drawbacks such as high power consumption, congested transmission channels with many devices, and high transmission delays.

[0006] Therefore, how to make up for the defects of existing audio transmission equipment such as crowded transmission channels and high audio transmission delay during multi-device transmission is an urgent problem to be solved.

[0007] Summary of the Invention

[0008] In view of this, the present application provides an audio transmission device and an audio system to solve the problems of transmission channel congestion and high transmission audio delay during multi-device transmission of existing audio transmission equipment.

[0009] The audio transmission device provided in this application includes a housing, a receiving device, and a physical transceiver;

[0010] The receiving device is arranged in the housing and receives the audio data sent by the sending device through the data transmission interface;

[0011] The physical transceiver device is disposed in the housing and connected to the receiving device via the data exchange device, and is used to receive the audio data transmitted by the receiving device;

[0012] The physical transceiver device includes a UWB transceiver device, which is used to send the audio data received by the physical transceiver device to the playback device;

[0013] The UWB transceiver device includes a UWB antenna group, one end of the UWB antenna group is connected to the UWB transceiver device, and the other end of the UWB antenna group extends out of the shell.

[0014] Optionally, the audio transmission device further includes a UWB receiving device, which is disposed on the playback device and wirelessly connected to the UWB antenna group, and is used to receive audio data sent by the UWB transceiver.

[0015] Optionally, the UWB transceiver device includes a UWB antenna group, one end of the UWB antenna group is connected to the physical transceiver device, and the other end of the UWB antenna group extends out of the shell.

[0016] Optionally, the data transmission interface includes a USB interface.

[0017] Optionally, the data exchange device includes a serial peripheral interface, an input end of the serial peripheral interface is connected to a data output end of the receiving device, and an output end of the serial peripheral interface is connected to a data input end of the physical transceiver device.

[0018] Optionally, the data exchange device includes a universal asynchronous receiver-transmitter (URT), an input end of the UART is connected to a data output end of the receiving device, and an output end of the UART is connected to a data input end of the physical transceiver device.

[0019] Optionally, the receiving device includes a micro control unit, and a data input end of the micro control unit is connected to an output end of the USB interface.

[0020] Optionally, the receiving device includes a solder ball array packaging unit, and a data input end of the solder ball array packaging unit is connected to an output end of the USB interface.

[0021] Optionally, the receiving device includes a system-on-chip, and a data input terminal of the system-on-chip is connected to an output terminal of a USB interface.

[0022] The present application also provides an audio system, comprising a sending device, a playing device and the audio transmission device, wherein the sending device wirelessly transmits audio data to the playing device through the audio transmission device.

[0023] The receiving device of the audio transmission device of the present application receives the audio data sent by the sending device through the data transmission interface; the physical transceiver device receives the audio data transmitted by the receiving device through the data exchange device; the audio data received by the physical transceiver device is sent to the playback device through the UWB transceiver device of the physical transceiver device, thereby realizing wireless transmission of audio data between the sending device and the playback device;

[0024] The audio transmission device of the present application receives audio data through a receiving device, and then transmits the audio data to a physical transceiver device through a data exchange device, so that the physical transceiver device can transmit the audio signal to the playback device in the form of UWB wireless transmission. The structural design is ingenious and facilitates the conversion and transmission of audio, thereby improving the transmission speed of audio data, reducing the power consumption of the audio transmission device with low transmission power, having strong anti-interference ability and high positioning accuracy, and can be used for precise search equipment and positioning equipment. It is suitable for the transmission of multi-channel audio data, overcoming the defects of existing audio wireless transmission such as high power consumption, large delay and congested transmission channels during multi-channel transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] FIG1 is a schematic structural diagram of an audio transmission device according to an embodiment of the present application;

[0027] FIG2 is a structural diagram of an audio data encapsulation packet set by a receiving device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise clearly specified.

[0032] Embodiments of the present application provide an audio transmission device and an audio system.

[0033] 1 , the audio transmission device provided by the present application includes a housing 1 , a receiving device 2 , and a physical transceiver 3 ;

[0034] The receiving device 2 is arranged in the housing 1 and receives the audio data sent by the sending device through the data transmission interface 7;

[0035] The physical transceiver 3 is provided in the housing 1 and is connected to the receiving device 2 via the data exchange device 4, and is used to receive the audio data transmitted by the receiving device 2;

[0036] The physical transceiver device 3 includes a UWB transceiver device 5 for sending the audio data received by the physical transceiver device 3 to the playback device;

[0037] The UWB transceiver 5 includes a UWB antenna group 6 . One end of the UWB antenna group 6 is connected to the UWB transceiver 5 , and the other end of the UWB antenna group 6 extends out of the housing 1 .

[0038] In some embodiments, the UWB transceiver 5 refers to an ultra-wideband (UWB) transceiver that can send and receive wireless signals.

[0039] It should be noted that UWB technology is a wireless carrier communication technology that does not use a sinusoidal carrier wave, but rather uses nanosecond-level non-sinusoidal narrow pulses to transmit data. Therefore, it occupies a wide spectrum range and can operate in the 3.1-10.6 GHz range. Therefore, transmitting audio data through the UWB transceiver 5 has the following advantages:

[0040] 1. The system has large capacity and fast transmission speed. According to Shannon's equation, the wider the bandwidth, the higher the maximum transmission rate of the system. The bandwidth of UWB communication is above 500MHz. The transmission speed is fast enough to ensure higher audio quality and more channels, as well as more RF sleep time.

[0041] 2. Low transmission power. UWB's huge bandwidth ensures lower transmission power, greatly reducing system power consumption.

[0042] 3. Strong anti-multipath interference capability, suitable for audio data transmission in indoor environments;

[0043] 4. High positioning accuracy, with extended functions such as accurate device search.

[0044] As an optional implementation of the present application, the audio transmission device further includes a UWB receiving device 8 , which is provided on the playback device and is configured to receive audio data sent by the UWB transceiver 5 .

[0045] In some embodiments, one end of the UWB antenna assembly 6 is connected to the data output terminal of the UWB transceiver 5, and the other end is wirelessly connected to the UWB receiver 8. This allows the UWB antenna assembly 6 to transmit the audio data received by the UWB transceiver 5 to the playback device. Specifically, the UWB antenna assembly 6 transmits the audio signal from the UWB transceiver 5 to the UWB receiver 8 on the playback device via UWB wireless transmission. The dotted line between the UWB receiver 8 and the UWB antenna assembly 6 indicates the wireless connection between the two.

[0046] In some embodiments, the data transmission interface 7 includes but is not limited to a USB interface capable of transmitting audio data.

[0047] In some embodiments, the data exchange device 4 includes a serial peripheral interface (SPI), an input end of the SPI is connected to a data output end of the receiving device 2 , and an output end of the SPI is connected to a data input end of the physical transceiver device 3 .

[0048] In some embodiments, the data input terminal of the physical transceiver device 3 is connected to the data input terminal of the UWB transceiver device 5 .

[0049] In other embodiments, the data exchange device 4 includes a universal asynchronous receiver / transmitter (UART), the input end of the asynchronous receiver / transmitter is connected to the data output end of the receiving device 2, and the output end of the asynchronous receiver / transmitter is connected to the data input end of the physical transceiver device 3.

[0050] Preferably, audio data is transmitted between the receiving device 2 and the physical transceiver device 3 through a UART interface or SPI interface with high-speed transmission performance, thereby improving the transmission efficiency, so that after the receiving device 2 receives the audio data through the USB interface, the audio data is converted into data that can be received by the UWB receiving device 8 and transmitted to the physical transceiver device 3, so that the physical transceiver device 3 can send the received audio data directly through the UWB transceiver device 5, thereby improving the transmission and delivery efficiency of the audio data.

[0051] In some embodiments, the receiving device 2 includes a micro controller unit (MCU), a data input end of the MCU is connected to an output end of the USB interface, and a data output end of the MCU is connected to the physical transceiver device 3 via a data exchange device 4 .

[0052] In other embodiments, the receiving device 2 includes a ball grid array (BGA) unit, the data input end of the ball grid array unit is connected to the output end of the USB interface, and the data output end of the ball grid array unit is connected to the physical transceiver device 3 through the data exchange device 4.

[0053] In some further embodiments, the receiving device 2 includes a system-on-a-Chip (SoC), the data input end of the SoC is connected to the output end of the USB interface, and the data output end of the SoC is connected to the physical transceiver device 3 through the data exchange device 4.

[0054] In some embodiments, the physical transceiver 3 of the present application has a UWB transceiver function, and realizes wireless transmission in accordance with standards such as IEEE 802.15.4 / 4Z, and has standard definitions for data packet structure synchronization, transmission frame structure, RF configuration, etc. During operation, the receiving device 2 only needs to perform corresponding sending or receiving configuration on the physical transceiver 3 and read or write operations on the data area. After receiving the audio data, the receiving device 2 can set a private data area according to user customization. The receiving device 2 only needs to transmit or receive the data in the customized private data area to realize the transmission of audio data through the UWB transceiver 5.

[0055] In some embodiments, the receiving device 2 of the present application includes high-speed transmission that supports UAC2.0. After receiving audio data through the USB audio data endpoint, the receiving device 2 customizes the audio data, packages the customized data and transmits it to the ring buffer queue (Ring Buffer), and then transmits the data in the Ring Buffer to the UWB transceiver 5 of the physical transceiver device 3 through high-speed SPI, thereby realizing high-speed transmission of audio data between the receiving device 2 and the UWB transceiver 5.

[0056] 2, the audio data encapsulation package structure set for the receiving device, wherein the meaning of each data structure in the audio data encapsulation package is as follows:

[0057] FRAME ID is used for receiver multi-channel audio frame synchronization;

[0058] CHANNEL ID indicates the channel ID of the current audio data;

[0059] DATA LEN indicates the length of the current audio data;

[0060] AUDIO DATA indicates uncompressed audio stream data;

[0061] CMD DATA indicates system transparent transmission information. Its fixed length can include sampling rate, system volume and other status;

[0062] CRC is used to check all the data from FRAME ID to CMD DATA to enhance the robustness of the system.

[0063] The data structure of the above audio data encapsulation package takes into account multi-channel application scenarios, and therefore can be applied to multi-channel audio transmission scenarios and is applicable to many scenarios.

[0064] The present application also provides an audio system, including a sending device, a playing device and an audio transmission device, wherein the sending device wirelessly transmits audio data to the playing device through the audio transmission device.

[0065] In some embodiments, the sending device is provided with an interface that matches the data transmission interface, such as a USB interface device, for transmitting audio data to the audio transmission device via USB at high speed.

[0066] In some embodiments, the sending device includes but is not limited to a computer, a mobile phone, and a television that can send audio data.

[0067] In some embodiments, a UWB receiving device is provided on the playback device, which matches the UWB transceiver of the present application. The UWB receiving device communicates with the UWB transceiver via UWB wireless communication through a UWB antenna group to transmit the audio of the sending device to the playback device, thereby improving the audio transmission speed and the audio quality.

[0068] In some embodiments, the playback device includes but is not limited to headphones and speakers.

[0069] In summary, the advantages of the audio transmission device and audio system of the present application are:

[0070] The audio transmission device of the present application receives audio data through a receiving device, and then transmits the audio data to a physical transceiver device through a data exchange device, so that the physical transceiver device can transmit the audio signal to the playback device in a UWB wireless transmission manner. The structural design is ingenious and facilitates audio conversion and transmission. The use of a new wireless technology solution overcomes the problems of existing wireless audio Bluetooth transmission such as low bandwidth, high latency, high power consumption, and multi-channel congestion of devices. The transmission speed of audio data is improved, the transmission power is reduced, the power consumption of the audio transmission device is reduced, the anti-interference ability is strong, and the positioning accuracy is high. It can be used for accurately finding and positioning devices.

[0071] It is suitable for the transmission of multi-channel audio data, and can optimize the transmission audio quality under high-bandwidth, low-power, and strong anti-interference wireless transmission conditions, such as optimizing the transmission of higher-quality music, such as optimizing the quality of music with high sampling rate and high data volume, or more audio channels, such as Dolby multi-channel. The amount of data transmitted is equal to the amount of data per channel multiplied by the number of channels, which greatly improves the audio data transmission volume and transmission speed; and expands the wireless audio transmission function of existing equipment.

[0072] The above is a detailed introduction to a lawn mowing method, device, lawn mowing robot and storage medium provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An audio transmission device, characterized in that: It includes a housing, a receiving device, and a physical transceiver; The receiving device is arranged in the housing and receives the audio data sent by the sending device through the data transmission interface; The physical transceiver device is disposed in the housing, connected to the receiving device via a data exchange device, and is used to receive audio data transmitted by the receiving device; The physical transceiver device includes a UWB transceiver device, which is used to send the audio data received by the physical transceiver device to the playback device; The UWB transceiver device comprises a UWB antenna group, one end of the UWB antenna group is connected to the UWB transceiver device, and the other end of the UWB antenna group extends out of the housing.

2. The audio transmission device according to claim 1, characterized in that: It also includes a UWB receiving device, which is arranged on the playback device and wirelessly connected to the UWB antenna group, and is used to receive audio data sent by the UWB transceiver.

3. The audio transmission device according to claim 2, characterized in that: The data transmission interface includes a USB interface.

4. The audio transmission device according to claim 2, characterized in that: The data exchange device comprises a serial peripheral interface, an input end of the serial peripheral interface is connected to a data output end of the receiving device, and an output end of the serial peripheral interface is connected to a data input end of the physical transceiver device.

5. The audio transmission device according to claim 2, characterized in that: The data exchange device comprises a universal asynchronous receiver-transmitter, the input end of the asynchronous receiver-transmitter is connected to the data output end of the receiving device, and the output end of the asynchronous receiver-transmitter is connected to the data input end of the physical transceiver device.

6. The audio transmission device according to claim 3, characterized in that: The receiving device comprises a micro control unit, and a data input end of the micro control unit is connected to an output end of the USB interface.

7. The audio transmission device according to claim 3, characterized in that: The receiving device comprises a solder ball array packaging unit, and a data input end of the solder ball array packaging unit is connected to an output end of a USB interface.

8. The audio transmission device according to claim 3, characterized in that: The receiving device comprises a system-level chip, and a data input terminal of the system-level chip is connected to an output terminal of a USB interface.

9. An audio system, characterized in that: It comprises a sending device, a playing device and the audio transmission device according to any one of claims 1 to 8, wherein the sending device wirelessly transmits audio data to the playing device through the audio transmission device.

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