Audio conversion device

Abstract

The utility model provides audio conversion equipment, which comprises a power distribution circuit, an audio transceiver circuit, a control chip and a power supply chip, the power distribution circuit is respectively coupled with the audio transceiver circuit and the control chip and supplies power to the audio transceiver circuit and the control chip; the audio transceiver circuit is used for receiving, processing and / or sending a digital audio signal; the control chip is coupled with the audio transceiver circuit and the power supply chip and is used for controlling the audio transceiver circuit and the power supply chip; and the power supply interface is coupled with the power supply chip, the power supply chip outputs voltage to the power supply interface, and the power supply interface is used for carrying out power supply transmission with external equipment when the power supply chip is connected with the external equipment. Through the mode, the external equipment connected with the audio conversion equipment is powered, the practicability and the integration degree are improved, and diversified requirements of users are met.

Description

Technical Field

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

[0002] With the rapid development of intelligent information technology, the scenarios requiring audio playback are increasing. Audio conversion equipment is not only a system that provides high-quality audio output, but also plays multiple roles in connecting and exchanging data with various external devices.

[0003] In order to meet users' diverse needs for life entertainment and information technology equipment, the practicality and integration of audio conversion equipment need to be improved. Utility Model Content

[0004] The present application provides an audio conversion device that can power external devices connected to the audio conversion device, improve practicality and integration, and meet the diverse needs of users.

[0005] To solve the above technical problems, the present application provides an audio conversion device, wherein the audio conversion device includes:

[0006] Power distribution circuit, audio transceiver circuit, control chip and power supply chip; the power distribution circuit is coupled to the audio transceiver circuit and the control chip respectively, and supplies power to the audio transceiver circuit and the control chip; the audio transceiver circuit is used to receive, process and / or send digital audio signals; the control chip is coupled to the audio transceiver circuit and the power supply chip, and is used to control the audio transceiver circuit and the power supply chip; the power supply interface is coupled to the power supply chip, and the power supply chip outputs voltage to the power supply interface, which is used to transmit power to the external device when an external device is connected.

[0007] The power distribution circuit is coupled to the power supply chip to supply power to the power supply chip.

[0008] The audio conversion device further includes a charging interface, which is coupled to the power supply chip and is used to supply power to the power supply chip through an external power supply.

[0009] The charging interface is coupled to the power distribution circuit and is used to supply power to the power distribution circuit through an external power supply.

[0010] Among them, the audio transceiver circuit includes: a signal processing chip, an audio transceiver chip, a first signal interface and a second signal interface; the signal processing chip is coupled to the first signal interface, and the audio transceiver chip is coupled to the second signal interface; the audio transceiver chip is coupled to the signal processing chip.

[0011] The control chip is coupled to the audio transceiver chip and the signal processing chip respectively.

[0012] Among them, the power distribution circuit includes: a voltage conversion chip, which is coupled with the first voltage stabilizing chip and the second voltage stabilizing chip respectively, and transmits voltage to the first voltage stabilizing chip and the second voltage stabilizing chip; the voltage conversion chip is coupled with the control chip and supplies power; the first voltage stabilizing chip is coupled with the signal processing chip and supplies power; the second voltage stabilizing chip is coupled with the audio transceiver chip and supplies power.

[0013] Among them, the power supply interface includes a USB Type-A interface and / or a USB Type-C interface.

[0014] Among them, the power distribution circuit, audio transceiver circuit, control chip, power supply chip and power supply interface of the audio conversion device are all coupled through the A2B bus.

[0015] The signal processing chip includes two processor cores and a signal interface for transmitting digital audio signals and communication signals; the first signal interface includes an SPDIF interface for receiving optical audio signals and converting them into digital audio signals.

[0016] Different from the existing technology, the audio conversion device provided in this application can power external devices connected to the audio conversion device. In addition to being connected to external devices, it can also power external devices, enrich practical scenarios, improve convenience, improve the practicality and integration of audio conversion devices, and meet the diverse needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an embodiment of the audio conversion device of the present application;

[0018] Figure 2 This is a structural diagram of another embodiment of the audio conversion device of the present application;

[0019] Figure 3 This is a schematic diagram of a power supply structure of an embodiment of another embodiment of the audio conversion device of the present application;

[0020] Figure 4 This is a structural diagram of another embodiment of the audio conversion device of the present application; DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present application in detail with reference to the accompanying drawings.

[0022] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0023] The term "and / or" in this document simply describes a relationship between related objects. Three possible relationships exist. For example, A and / or B can exist in three situations: A alone, A and B together, or B alone. Additionally, the character " / " in this document generally indicates an "or" relationship between the related objects.

[0024] The present application provides a monitoring circuit for a control switch, wherein the audio conversion device of the present application can be connected to a variety of external devices as sound sources such as mobile phones, storage devices, recording devices, microphones, etc., to receive and process analog signals or audio signals sent by external devices to the audio conversion device, and send the processed digital audio signals to the connected power amplifier or speakers to play music, while also providing power to the external devices connected to the audio conversion device.

[0025] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The audio conversion devices in and are schematic diagrams of structural logic. The specific device structure shall refer to the actual device structure in production.

[0026] See also Figure 1 , Figure 1 It is a structural diagram of an embodiment of the audio conversion device of the present application.

[0027] The audio conversion device 100 includes: a power distribution circuit 101, an audio transceiver circuit 102, a control chip 103 and a power supply chip 104; the power distribution circuit 101 is coupled to the audio transceiver circuit 102 and the control chip 103 respectively, and provides power to the audio transceiver circuit 102 and the control chip 103.

[0028] The audio conversion device 100 is connected to an internal power supply or an external power supply through a power distribution circuit 101. Depending on the charging power source, it may include one or more current-voltage conversion chips 1011 and / or voltage stabilizing chips to control the voltage flowing into the power distribution circuit 101. Since the audio transceiver circuit 102, the control chip 103 and the power supply chip 104 require different operating voltages, they can be powered separately after voltage conversion and voltage stabilization processing through the power distribution circuit 101.

[0029] The audio transceiver circuit 102 is configured to receive, process and / or transmit digital audio signals.

[0030] The audio conversion device 100 sends an audio signal to the audio power amplifier through a signal interface. In a specific embodiment, the signal transmission line is connected through the signal interface to connect to an external audio power amplifier for sound playback. In other embodiments, the external audio power amplifier can be wirelessly connected through a wireless signal interface via Bluetooth, wireless LAN, etc. for sound playback, or the audio power amplifier can be built into the audio conversion interface and coupled through the audio transceiver chip 1022 for audio playback.

[0031] The control chip 103 is coupled to the audio transceiver circuit 102 and the power supply chip 104 , and is configured to control the audio transceiver circuit 102 and the power supply chip 104 .

[0032] The control chip 103 can receive the processed audio information transmitted by the audio transceiver circuit 102 and the information during the operation of the audio transceiver circuit 102, and control the audio transceiver circuit 102, such as the storage of audio parameters and the output volume. When the control chip 103 detects that the audio transceiver circuit 102 is at a high temperature, it can activate overheating protection and send a control signal to reduce the output volume, mute or suspend operation.

[0033] The control chip 103 can also receive information about the working process of the power supply chip 104 for detection, and perform overcurrent protection, overvoltage protection or overheating protection in a timely manner to provide power supply protection for the power supply chip 104. It can control the output voltage of the power supply chip 104 and also provide protection for external devices connected to the power supply chip 104 to receive power.

[0034] The power supply interface 105 is coupled to the power supply chip 104 . The power supply chip 104 outputs voltage to the power supply interface 105 for transmitting power to the external device when the external device is connected.

[0035] There can be one or more power supply interfaces 105. The external device connected to the power supply interface 105 can be an external device such as a mobile phone, storage device, recording device, microphone, etc. that serves as an audio source. It can also be connected to a power amplifier or speaker to realize the use scenario of powering the audio while performing audio conversion. It can be understood that it can also power all external devices that require power. Moreover, due to the different power supply voltages required by the connected external devices, the power supply chip can identify the charging power required by the external device and provide the corresponding voltage and / or current, such as charging smart devices, microphones, cameras, etc., thereby expanding the application scenarios of the audio conversion device 100.

[0036] In an optional implementation, the power distribution circuit 101 is coupled to the power supply chip 104 to provide power to the power supply chip 104 .

[0037] Because the charging voltage output by the internal or external power supply connected to the audio conversion device 100 may exceed the maximum voltage that the power supply chip 104 can withstand, the power distribution circuit 101 is required to assist in current-voltage conversion before inputting it to the power supply chip 104. In other embodiments, the power supply chip 104 can be powered directly by an external or internal power supply.

[0038] See also Figure 2 , Figure 2 It is a structural diagram of another embodiment of the audio conversion device of the present application.

[0039] The audio conversion device 100 includes: a power distribution circuit 101, an audio transceiver circuit 102, a control chip 103 and a power supply chip 104; the power distribution circuit 101 is coupled to the audio transceiver circuit 102 and the control chip 103 respectively, and provides power to the audio transceiver circuit 102 and the control chip 103.

[0040] The audio conversion device 100 is connected to an internal power supply or an external power supply through a power distribution circuit 101. Depending on the charging power source, it may include one or more current-voltage conversion chips 1011 and / or voltage stabilizing chips to control the voltage flowing into the power distribution circuit 101. Since the audio transceiver circuit 102, the control chip 103 and the power supply chip 104 require different operating voltages, they can be powered separately after voltage conversion and voltage stabilization processing through the power distribution circuit 101.

[0041] The audio transceiver circuit 102 is configured to receive, process and / or transmit digital audio signals.

[0042] The audio conversion device 100 sends an audio signal to the audio power amplifier through a signal interface. In a specific embodiment, the signal transmission line is connected through the signal interface to connect to an external audio power amplifier for sound playback. In other embodiments, the external audio power amplifier can be wirelessly connected through a wireless signal interface via Bluetooth, wireless LAN, etc. for sound playback, or the audio power amplifier can be built into the audio conversion interface and directly coupled through the audio transceiver chip 1022 for audio playback.

[0043] The control chip 103 is coupled to the audio transceiver circuit 102 and the power supply chip 104 , and is configured to control the audio transceiver circuit 102 and the power supply chip 104 .

[0044] The control chip 103 can receive the processed audio information transmitted by the audio transceiver circuit 102 and the information during the operation of the audio transceiver circuit 102, and control the audio transceiver circuit 102, such as the storage of audio parameters and the output volume. When the control chip 103 detects that the audio transceiver circuit 102 is at a high temperature, it can activate overheating protection and send a control signal to reduce the output volume, mute or suspend operation.

[0045] The control chip 103 can also receive information about the working process of the power supply chip 104 for detection, and perform overcurrent protection, overvoltage protection or overheating protection in a timely manner to provide power supply protection for the power supply chip 104. It can control the output voltage of the power supply chip 104 and also provide protection for external devices connected to the power supply chip 104 to receive power.

[0046] The power supply interface 105 is coupled to the power supply chip 104 . The power supply chip 104 outputs voltage to the power supply interface 105 for transmitting power to the external device when the external device is connected.

[0047] There can be one or more power supply interfaces 105. The external device connected to the power supply interface 105 can be an external device such as a mobile phone, storage device, recording device, microphone, etc. that serves as an audio source. It can also be connected to a power amplifier or speaker to realize the use scenario of powering the audio while performing audio conversion. It can be understood that it can also power all external devices that require power. Moreover, due to the different power supply voltages required by the connected external devices, the power supply chip can identify the charging power required by the external device and provide the corresponding voltage and / or current, such as charging smart devices, microphones, cameras, etc., thereby expanding the application scenarios of the audio conversion device 100.

[0048] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the power supply structure of an embodiment of another implementation of the audio conversion device of the present application.

[0049] In an optional implementation, the audio conversion device 100 further includes a charging interface 106 , which is coupled to the power supply chip 104 and is configured to supply power to the power supply chip 104 via an external power source.

[0050] The audio conversion device 100 is connected to an external power source via a charging port 106. The external power source can be a generator, transformer, battery, or other power source. Connecting the power source via the charging port 106 facilitates power supply replacement and improves practicality in different application scenarios. The charging port 106 can have a voltage stabilization function or an AC to DC power conversion function. Powering the power supply chip 104 through the charging port 106 can provide fast charging or high-power supply conditions for the power supply chip 104.

[0051] In an optional embodiment, the charging interface 106 is coupled to the power distribution circuit 101 and is configured to supply power to the power distribution circuit 101 via an external power source.

[0052] The power distribution circuit 101 is coupled to an external power source through the charging interface 106 and receives power from the external power source. The external power source can provide sufficient power and stable voltage to power the audio transceiver circuit 102, control circuit and power supply chip coupled to the power distribution circuit 101.

[0053] In an optional embodiment, the audio transceiver circuit 102 includes: a signal processing chip 1021, an audio transceiver chip 1022, a first signal interface 1023 and a second signal interface 1024; the signal processing chip 1021 is coupled to the first signal interface 1023, and the audio transceiver chip 1022 is coupled to the second signal interface 1024; the audio transceiver chip 1022 is coupled to the signal processing chip 1021.

[0054] The first signal interface 1023 receives an audio signal or an analog signal transmitted by an external device serving as a sound source. The first signal interface 1023 converts the received analog signal or audio signal into a digital audio signal. The signal processing chip 1021 processes the digital audio signal received by the first signal interface 1023. The audio transceiver chip 1022 receives the digital audio signal processed by the signal processing chip 1021 and sends it to the second signal interface 1024, transmits it to the external audio playback device through the second signal interface 1024, or sends the processed digital audio signal to the signal processing chip 1021.

[0055] In an optional implementation, the control chip 103 is coupled to the audio transceiver chip 1022 and the signal processing chip 1021 respectively.

[0056] The signal processing chip 1021 processes the digital audio signal and sends it to the control chip 103. The control chip 103 sends a control signal to the audio transceiver chip 1022 according to the processed digital audio signal, so that the audio transceiver chip 1022 is configured to output the digital audio signal through the corresponding second signal interface 1024.

[0057] Alternatively, the control chip 103 sends a control signal to the signal processing chip 1021 according to the processed digital audio signal to control the signal processing chip 1021 to process the audio signal, such as controlling the output audio volume, sound balance or noise reduction processing method.

[0058] In an optional embodiment, the power distribution circuit 101 includes: a voltage conversion chip 1011, the voltage conversion chip 1011 is coupled to the first voltage stabilizing chip 1012 and the second voltage stabilizing chip 1013 respectively, and transmits voltage to the first voltage stabilizing chip 1012 and the second voltage stabilizing chip 1013; the voltage conversion chip 1011 is coupled to the control chip 103 and supplies power; the first voltage stabilizing chip 1012 is coupled to the signal processing chip 1021 and supplies power; the second voltage stabilizing chip 1013 is coupled to the audio transceiver chip 1022 and supplies power.

[0059] In one specific embodiment, because the operating voltages of the control chip 103, signal processing chip 1021, and audio transceiver chip 1022 are different, different voltage stabilizing chips are provided to provide different voltages. The voltage conversion chip 1011, first voltage stabilizing chip 1012, and second voltage stabilizing chip 1013 of the power distribution circuit 101 do not need to be directly connected to the control chip 103 or the chips of the audio transceiver circuit 102. Protection elements or filtering elements are provided in the circuit to improve circuit reliability. In other embodiments, if the operating voltages of two or all of the control chip 103, signal processing chip 1021, and audio transceiver chip 1022 are the same, they can also be provided on a single voltage stabilizing chip circuit to improve circuit simplicity.

[0060] Please refer to Figure 4 , Figure 4 It is a structural diagram of another embodiment of the audio conversion device of the present application.

[0061] In this embodiment, the audio conversion device 100 is set in the vehicle's on-board equipment and is connected to the equipment in the vehicle through the A2B bus (Automotive Audio Bus). The A2B bus is an unshielded twisted pair cable that transmits audio data, control signals, communication signals, power supply across distances, and can also transmit clock signals.

[0062] The audio conversion device 100 includes: a power distribution circuit 101, an audio transceiver circuit 102, a control chip 103 and a power supply chip 104; the power distribution circuit 101 is coupled to the audio transceiver circuit 102 and the control chip 103 respectively, and provides power to the audio transceiver circuit 102 and the control chip 103.

[0063] The audio conversion device 100 is connected to an internal power supply or an external power supply through a power distribution circuit 101. Depending on the charging power source, it may include one or more current-voltage conversion chips 1011 and / or voltage stabilizing chips to control the voltage flowing into the power distribution circuit 101. Since the audio transceiver circuit 102, the control chip 103 and the power supply chip 104 require different operating voltages, they can be powered separately after voltage conversion and voltage stabilization processing through the power distribution circuit 101.

[0064] The audio transceiver circuit 102 is configured to receive, process and / or transmit digital audio signals.

[0065] The audio conversion device 100 sends an audio signal to the audio power amplifier through a signal interface. In a specific embodiment, the signal transmission line is connected through the signal interface to connect to an external audio power amplifier for sound playback. In other embodiments, the external audio power amplifier can be wirelessly connected through a wireless signal interface via Bluetooth, wireless LAN, etc. for sound playback, or the audio power amplifier can be built into the audio conversion interface and directly coupled through the audio transceiver chip 1022 for audio playback.

[0066] The control chip 103 is coupled to the audio transceiver circuit 102 and the power supply chip 104 , and is configured to control the audio transceiver circuit 102 and the power supply chip 104 .

[0067] The control chip 103 can receive the processed audio information transmitted by the audio transceiver circuit 102 and the information during the operation of the audio transceiver circuit 102, and control the audio transceiver circuit 102, such as the storage of audio parameters and the output volume. When the control chip 103 detects that the audio transceiver circuit 102 is at a high temperature, it can activate overheating protection and send a control signal to reduce the output volume, mute or suspend operation.

[0068] The control chip 103 can also receive information about the working process of the power supply chip 104 for detection, and perform overcurrent protection, overvoltage protection or overheating protection in a timely manner to provide power supply protection for the power supply chip 104. It can control the output voltage of the power supply chip 104 and also provide protection for external devices connected to the power supply chip 104 to receive power.

[0069] The power supply interface 105 is coupled to the power supply chip 104 . The power supply chip 104 outputs voltage to the power supply interface 105 for transmitting power to the external device when the external device is connected.

[0070] There can be one or more power supply interfaces 105. The external device connected to the power supply interface 105 can be an external device such as a mobile phone, storage device, recording device, microphone, etc. that serves as an audio source. It can also be connected to a power amplifier or speaker to realize the use scenario of powering the audio while performing audio conversion. It can be understood that it can also power all external devices that require power. Moreover, due to the different power supply voltages required by the connected external devices, the power supply chip can identify the charging power required by the external device and provide the corresponding voltage and / or current, such as charging smart devices, microphones, cameras, etc., thereby expanding the application scenarios of the audio conversion device 100.

[0071] In an optional implementation, the audio conversion device 100 further includes a charging interface 106 , which is coupled to the power supply chip 104 and is configured to supply power to the power supply chip 104 via an external power source.

[0072] The audio conversion device 100 is connected to an external power source via a charging port 106. The external power source can be a generator, transformer, battery, or other power source. Connecting the power source via the charging port 106 facilitates power supply replacement and improves practicality in different application scenarios. The charging port 106 can have a voltage stabilization function or an AC to DC power conversion function. Powering the power supply chip 104 through the charging port 106 can provide fast charging or high-power supply conditions for the power supply chip 104.

[0073] In an optional embodiment, the power supply interface 105 includes a USB Type-A interface and / or a USB Type-C interface.

[0074] The power supply interface 105 may be one or more, so as to connect to a variety of power supply devices and provide more application scenarios and practicality.

[0075] In a specific embodiment, the power supply chip 104 adopts a PD (Power Delivery) chip of the TPS25762 chip, supports the PD3.0 protocol, includes an integrated buck / boost converter with 4 power switches, and a USB (Universal Serial Bus) port controller with Type-C cable plugging and direction detection, which can support the installation of 4 USB Type-A interfaces and / or USB Type-C interfaces. In a specific embodiment, it is connected to the USB Type-C interface through at least two pins (not shown) with detection functions such as direction detection, which can withstand a voltage of 5.5V to 18V or even a maximum of 40V input to the power supply chip 104, support a power output power of up to 65W, and bidirectional charging. In other embodiments, multiple USB types of power supply interfaces 105 can also be set in combination.

[0076] In an optional embodiment, the charging interface 106 is coupled to the power distribution circuit 101 and is configured to supply power to the power distribution circuit 101 via an external power source.

[0077] The power distribution circuit 101 is coupled to an external power source through the charging interface 106 and receives power from the external power source. The external power source can provide sufficient power and stable voltage to power the audio transceiver circuit 102, control circuit and power supply chip coupled to the power distribution circuit 101.

[0078] In an optional embodiment, the audio transceiver circuit 102 includes: a signal processing chip 1021, an audio transceiver chip 1022, a first signal interface 1023 and a second signal interface 1024; the signal processing chip 1021 is coupled to the first signal interface 1023, and the audio transceiver chip 1022 is coupled to the second signal interface 1024; the audio transceiver chip 1022 is coupled to the signal processing chip 1021.

[0079] The first signal interface 1023 receives an audio signal or an analog signal transmitted by an external device serving as a sound source. The first signal interface 1023 converts the received analog signal or audio signal into a digital audio signal. The signal processing chip 1021 processes the digital audio signal received by the first signal interface 1023. The audio transceiver chip 1022 receives the digital audio signal processed by the signal processing chip 1021 and sends it to the second signal interface 1024, transmits it to the external audio playback device through the second signal interface 1024, or sends the processed digital audio signal to the signal processing chip 1021.

[0080] In an optional embodiment, the signal processing chip includes two processor cores and a signal interface for transmitting digital audio signals and communication signals; the first signal interface 1023 includes an SPDIF interface for receiving optical audio signals and converting them into digital audio signals.

[0081] In a specific embodiment, the signal processing chip 1021 uses an ADSP-21593 (Digital Signal Processor) chip, which is composed of two SHARC+ processor cores and their peripherals. The peripherals have an audio interface and support data protocols such as I2S and TDM. The first signal interface 1023 is an SPDIF (Sony / Philips Digital Interface) that converts the optical audio signal from the external device serving as the sound source into a digital audio signal and transmits it to the signal processing chip 1021. The signal processing chip 1021 converts the digital audio signal into a TDM (Time Division Multiplexing) format and transmits it to the audio conversion chip.

[0082] In a specific embodiment, the audio transceiver chip 1022 is an A2B transceiver chip such as the AD2428 chip. The audio processing chip transmits a TDM signal of the processed digital audio signal and can also send a TDM signal of the processed digital audio signal for feedback to the audio processing chip, thereby achieving two-way communication.

[0083] When the power amplifier connected to the interface includes a feedback microphone for sound feedback or noise cancellation, the audio captured by the feedback microphone will be converted into a digital audio signal and sent to the audio transceiver chip 1022 through the interface, realizing two-way communication processing and conversion of the digital audio signal.

[0084] In an optional implementation, the control chip 103 is coupled to the audio transceiver chip 1022 and the signal processing chip 1021 respectively.

[0085] In a specific embodiment, the control chip 103 adopts an S32K312 chip, which has a microcontroller based on the ARM Cortex-M7 core, 512KB of flash memory and 128KB of static random access memory, and also includes a variety of peripheral interfaces, such as CAN (Controller Area Network), Ethernet, USB, UART (Universal Asynchronous Receiver / Transmitter), SPI (Serial Peripheral Interface), I2C (Inter-Integrated Circuit), and other communication interfaces.

[0086] The signal processing chip 1021 processes the digital audio signal and sends it to the control chip 103. The control chip 103 sends a control signal to the audio transceiver chip 1022 according to the processed digital audio signal, so that the audio transceiver chip 1022 is configured to output the digital audio signal through the corresponding second signal interface 1024.

[0087] Alternatively, the control chip 103 sends a control signal to the signal processing chip 1021 according to the processed digital audio signal to control the signal processing chip 1021 to process the audio signal, such as controlling the output audio volume, sound balance or noise reduction processing method.

[0088] The control chip 103 receives the processed audio data from the signal processing chip 1021 via the SPI protocol, and then configures the audio transceiver chip 1022 via the I2C protocol to output the corresponding audio interface. The audio transceiver chip 1022 module is in slave mode by default, meaning that the device can output digital audio signals, but it needs to rely on the master device for control and does not generate clock, synchronization, and framing signals. The control chip 103 needs to configure the A2B register of the audio transceiver chip 1022 via I2C, configuring it to master mode, i.e., master device mode, to actively manage the audio data stream. In this way, the audio transceiver chip 1022 can output digital audio signals and generate clock, synchronization, and framing signals.

[0089] In an optional embodiment, the power distribution circuit 101 includes: a voltage conversion chip 1011, the voltage conversion chip 1011 is coupled to the first voltage stabilizing chip 1012 and the second voltage stabilizing chip 1013 respectively, and transmits voltage to the first voltage stabilizing chip 1012 and the second voltage stabilizing chip 1013; the voltage conversion chip 1011 is coupled to the control chip 103 and supplies power; the first voltage stabilizing chip 1012 is coupled to the signal processing chip 1021 and supplies power; the second voltage stabilizing chip 1013 is coupled to the audio transceiver chip 1022 and supplies power.

[0090] In one specific embodiment, because the control chip 103, signal processing chip 1021, and audio transceiver chip 1022 operate at different voltages, different voltage regulator chips are provided to provide different voltages. The power distribution circuit 101 includes a DC converter chip and two low-voltage-dropout linear regulator chips. The DC converter chip converts an external battery power source into a 3.3V voltage to power the control chip 103. The 3.3V voltage is then supplied to the first and second voltage regulator chips 1012 and 1013. The first voltage regulator chip 1012 converts the voltage into a 1V voltage to power the signal processing chip 1021. The second voltage regulator chip 1013 converts the voltage into an 8.5V voltage to power the audio transceiver chip 1022.

[0091] The voltage conversion chip 1011, first voltage regulator chip 1012, and second voltage regulator chip 1013 of the power distribution circuit 101 do not need to be directly connected to the control chip 103 or the chips of the audio transceiver circuit 102. Protection components or filtering elements can be incorporated into the circuit to improve circuit reliability. In other embodiments, if two or all of the control chip 103, signal processing chip 1021, and audio transceiver chip 1022 operate at the same voltage, they can be incorporated into a single voltage regulator chip, improving circuit simplicity.

[0092] Different from the existing technology, the audio conversion device provided in this application can convert audio signals and provide them to an external power amplifier or speaker, and power external devices connected to the audio conversion device. In addition to connecting to external devices, it can also power multiple external devices, realize conversion between multiple charging protocols, provide more compatibility and enrich practical scenarios, improve convenience, improve the practicality and integration of audio conversion devices, and meet the diverse needs of users.

[0093] In the several embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. For the technical solutions in the embodiments of this application, it is obvious that the described embodiments 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 ordinary technicians in this field without making creative work are within the scope of protection of this application. For example, the device implementation methods described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0094] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0095] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "coupled," "connected," "connected," "set," and "installed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0096] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of this embodiment.

[0097] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0098] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An audio conversion device, characterized in that: The audio conversion device comprises: Power distribution circuit, audio transceiver circuit, control chip and power supply chip; The power distribution circuit is coupled to the audio transceiver circuit and the control chip respectively, and supplies power to the audio transceiver circuit and the control chip; The audio transceiver circuit is used to receive, process and / or send digital audio signals; The control chip is coupled to the audio transceiver circuit and the power supply chip, and is used to control the audio transceiver circuit and the power supply chip; A power supply interface is coupled to the power supply chip, and the power supply chip outputs voltage to the power supply interface for transmitting power to the external device when an external device is connected.

2. The audio conversion device according to claim 1, characterized in that The power distribution circuit is coupled to the power supply chip to supply power to the power supply chip.

3. The audio conversion device according to claim 1, characterized in that The audio conversion device also includes a charging interface, which is coupled to the power supply chip and is used to supply power to the power supply chip through an external power supply.

4. The audio conversion device according to claim 3, characterized in that The charging interface is coupled to the power distribution circuit and is used to supply power to the power distribution circuit through an external power supply.

5. The audio conversion device according to claim 1, characterized in that The audio transceiver circuit includes: a signal processing chip, an audio transceiver chip, a first signal interface and a second signal interface; The signal processing chip is coupled to the first signal interface, the audio transceiver chip is coupled to the second signal interface; and the audio transceiver chip is coupled to the signal processing chip.

6. The audio conversion device according to claim 5, characterized in that The control chip is coupled to the audio transceiver chip and the signal processing chip respectively.

7. The audio conversion device according to claim 5, characterized in that The power distribution circuit comprises: a voltage conversion chip, the voltage conversion chip being coupled to the first voltage stabilizing chip and the second voltage stabilizing chip respectively, and transmitting voltage to the first voltage stabilizing chip and the second voltage stabilizing chip; The voltage conversion chip is coupled to the control chip and provides power; The first voltage stabilizing chip is coupled to the signal processing chip and provides power; The second voltage stabilizing chip is coupled to the audio transceiver chip and provides power.

8. The audio conversion device according to claim 1, characterized in that The power supply interface includes a USB Type-A interface and / or a USB Type-C interface.

9. The audio conversion device according to claim 1, characterized in that The power distribution circuit, the audio transceiver circuit, the control chip, the power supply chip and the power supply interface of the audio conversion device are all coupled via an A2B bus.

10. The audio conversion device according to claim 5, characterized in that The signal processing chip includes two processor cores and a signal interface for transmitting digital audio signals and communication signals; the first signal interface includes an SPDIF interface for receiving optical audio signals and converting them into digital audio signals.

Images