Audio device and control method thereof

Abstract

The invention provides an audio device and a control method thereof. The audio device comprises a charger and at least one audio player. The charger is coupled to the transmission line for generating a charging voltage. The audio player is coupled to the charger through a transmission line. The charger transmits the charging voltage to the audio player through the transmission line, and transmits first data to the audio player through the transmission line; and the charger receives the second data from the audio player through the transmission line.

Description

Technical Field

[0001] The present application relates to an audio device and a control method thereof, and more particularly to an audio device capable of bidirectionally transmitting and receiving data and a control method thereof. Background Art

[0002] In the relevant technical field, the charger and audio player in the audio device can transmit data through two transmission lines by switching alternately between 0 volts and 5 volts. In addition, in the relevant technical field, only the charger as the main end can transmit data to the audio player, and the audio player cannot transmit data to the charger. As a result, the relevant audio device can only perform one-way data communication, resulting in the inability to improve work efficiency. Moreover, the relevant audio device needs to transmit data through a signal with a full-swing voltage, which consumes relatively high power consumption and may generate noise during the transmission process, reducing the quality of the audio signal. Summary of the invention

[0003] The present application provides an audio device and a control method thereof, wherein a charger and an audio player can bidirectionally transmit and receive data.

[0004] The audio device of the present application includes a charger and at least one audio player. The charger is coupled to a transmission line to generate a charging voltage. The at least one audio player is coupled to the charger via the transmission line. The charger transmits the charging voltage to the at least one audio player via the transmission line. The charger transmits first data to the at least one audio player via the transmission line; and the charger receives second data from the at least one audio player via the transmission line.

[0005] In one embodiment, the charger causes the first data to be mounted on the charging voltage to be transmitted to at least one audio player, and at the same time, the at least one audio player causes the second data to be mounted on the charging voltage to be transmitted to the charger.

[0006] In one embodiment, the charger includes: a charging voltage generating circuit, which generates a charging voltage according to a source voltage and provides the charging voltage to a transmission line; a control circuit, which is coupled to the transmission line, generates first data, and mounts the first data on the charging voltage; and a receiving circuit, which is coupled to the transmission line, filters out the charging voltage to obtain second data.

[0007] In one embodiment, the control circuit determines whether to pull down the charging voltage to the first voltage to mount the first data to the charging voltage according to the logic value of the first data.

[0008] In one embodiment, the first voltage is greater than a reference ground voltage.

[0009] In one embodiment, the receiving circuit includes: a capacitor; and an amplifier circuit; wherein the capacitor is connected in series between the transmission line and the amplifier circuit, the capacitor is used to filter out the DC component signal of the signal of the transmission line to obtain an AC component signal, and the amplifier circuit amplifies the AC component signal to obtain read data.

[0010] In one embodiment, the amplifier circuit further transmits the read data in analog form to the control circuit, and the control circuit converts the read data into digital form to obtain the second data.

[0011] In one embodiment, the charging voltage generating circuit is a boost circuit.

[0012] In one embodiment, the control circuit includes: a microcontroller; and a signal transmitter coupled to the microcontroller and the transmission line, for mounting the first data on the charging voltage.

[0013] In one embodiment, at least one audio player includes: a charging control circuit, coupled to a transmission line, providing a charging voltage to charge a battery; a receiving circuit, coupled to the transmission line, filtering out the charging voltage to obtain first data; and a control circuit, coupled to the transmission line, generating second data, and mounting the second data on the charging voltage.

[0014] In one embodiment, the control circuit determines whether to pull down the charging voltage to the second voltage to mount the first data to the charging voltage according to the logic value of the second data.

[0015] In one embodiment, the second voltage is greater than a reference ground voltage.

[0016] In one embodiment, the receiving circuit includes: a capacitor; and an amplifier circuit; wherein the capacitor is connected in series between the transmission line and the amplifier circuit, the capacitor is used to filter out the DC component signal of the signal of the transmission line to obtain an AC component signal, and the amplifier circuit amplifies the AC component signal to obtain read data.

[0017] In one embodiment, the amplifier circuit further transmits the read data in analog form to the control circuit, and the control circuit converts the read data into digital form to obtain the first data.

[0018] In one embodiment, the control circuit includes: a microcontroller; and a signal transmitter coupled to the microcontroller and the transmission line, and used to mount the second data on the charging voltage.

[0019] The control method of the audio device of the present application includes: coupling the charger and at least one audio player to each other through a transmission line; allowing the charger to transmit a charging voltage and first data to at least one audio player through the transmission line; and allowing at least one audio player to transmit second data to the charger through the transmission line.

[0020] In one embodiment, the control method further includes: providing a charger so that the first data is mounted on the charging voltage to be transmitted to at least one audio player; and simultaneously providing at least one audio player so that the second data is mounted on the charging voltage to be transmitted to the charger.

[0021] In one embodiment, the control method also includes: enabling the charger to determine whether to pull down the charging voltage to the first voltage to mount the first data to the charging voltage according to the logic value of the first data; and enabling at least one audio player to determine whether to pull down the charging voltage to the second voltage to mount the second data to the charging voltage according to the logic value of the second data.

[0022] In one embodiment, the first voltage and the second voltage are both greater than a reference ground voltage.

[0023] Based on the above, in the audio device of the embodiment of the present application, the charger transmits the charging voltage to the audio player through the transmission line. Moreover, through the same transmission line, the charger can simultaneously transmit data with the audio player. In this way, while the audio player is charging, the charger can send and receive information with the audio player, effectively improving the working efficiency of the audio device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. 1 is a schematic diagram of an audio device according to an embodiment of the present application.

[0025] Figure 2 It is a waveform diagram of the data transmission action between the charger and the audio player in the audio device of the embodiment of the present application.

[0026] Figure 3 FIG. 1 is a schematic diagram of an audio device according to another embodiment of the present application.

[0027] Figure 4 FIG. 1 is a voltage waveform diagram of a transmission line in an audio device according to an embodiment of the present application.

[0028] Figure 5 FIG. 1 is a schematic diagram of an audio device according to another embodiment of the present application.

[0029] Figure 6 as well as Figure 7 Flow chart of a control method of an audio device according to different embodiments of the present application.

[0030] Description of reference numerals:

[0031] 100, 300, 500: Audio device

[0032] 110, 310, 510: Charger

[0033] 121, 122, 320, 520: Audio player

[0034] VS: Source voltage

[0035] VCP: Charging voltage

[0036] 311, 511: Booster

[0037] 312, 322, 512, 522: Control circuit

[0038] 313, 323, 513, 523: Receiving circuit

[0039] 324, 524: Charging control circuit

[0040] BAT: Battery

[0041] INT: interrupt signal

[0042] 3121, 3221: Microcontroller

[0043] 3122, 3222: Signal transmitter

[0044] DV1, DV2: driving signal

[0045] R1~R5:resistance

[0046] D1: First Data

[0047] D2: Second data

[0048] GND: Ground terminal

[0049] RG: reference ground wire

[0050] Vbus: transmission line

[0051] CLK: frequency signal

[0052] VA1: Signal

[0053] SYNC1, SYNC2: synchronization signal

[0054] V1, V2: voltage

[0055] ST: Start signal

[0056] ED: End signal

[0057] T1~T3: Time interval

[0058] C51, C52: capacitors

[0059] 5131, 5231: Amplifier circuit

[0060] RS1, RS2: read signal

[0061] S610~S650, S710~S730: Steps DETAILED DESCRIPTION

[0062] Please refer to Figure 1 , Figure 1 Schematic diagram of an audio device according to an embodiment of the present application. The audio device 100 includes a charger 110 and an audio player 121 and an audio player 122. The charger 110 is coupled to the audio player 121 and the audio player 122 through a transmission line Vbus. In this embodiment, the ground terminals GND of the charger 110 and the audio player 121 and the audio player 122 can be coupled to the same reference ground line RG. The charger 110 is used to generate a charging voltage, and can transmit the charging voltage to the audio player 121 and the audio player 122 through the transmission line Vbus to perform a charging operation on the batteries in the audio player 121 and the audio player 122. In addition, while the charging operation is being performed, the charger 110 can transmit the first data D1 to the audio player 121 and the audio player 122 through the transmission line. On the other hand, while the charging operation is also being performed, one of the audio players 121 and the audio player 122 can transmit the second data D2 to the charger 110 through the transmission line Vbus.

[0063] It is worth mentioning that, in this embodiment, the transmission operations of the first data D1 and the second data D2 of the charger 110 and one of the audio players 121 and 122 can be performed simultaneously.

[0064] For details on data transmission between the charger 110 and the audio players 121 and 122, please refer to Figure 2 The waveform diagram of the data transmission action between the charger and the audio player in the audio device of the embodiment of the present application is shown. Here, the charger 110 transmits the first data D1 to the audio player 121 as an example. Among them, the data transmission action can be performed based on the frequency signal CLK. In this embodiment, the charger 110 as the master end can cause the first data D1 to be mounted on the charging voltage provided by the charger 110. The charger 110 can pull down or pull up the signal VA1 on the transmission line Vbus according to the logic value of the first data D1. Among them, in the initial state, the charger 110 can generate a synchronization signal SYNC1 by pulling down the signal VA1 to the voltage V1 and maintaining the signal VA1 as one and a half cycles of the frequency signal CLK. The charger 110 can inform the audio player 121 as the slave end to start the transmission action of the first data D1 through the synchronization signal SYNC1.

[0065] Next, in one cycle of the clock signal CLK after the synchronization signal SYNC1, the charger 110 may first pull up the signal VA1 to the voltage V2 and then pull down the signal VA1 to the voltage V1 to generate the start signal ST. After the start signal ST, the charger 110 may pull up the signal VA1 to the voltage V2 or pull down the signal VA1 to the voltage V1 according to the logic value of the first data D1 to transmit the first data D1.

[0066] After completing the transmission of the first data D1, the charger 110 can generate an end signal ED by pulling down the signal VA1 to the voltage V1. If the transmitted first data D1 cannot be correctly received by the audio player 121, the charger 110 can retransmit the synchronization signal SYNC2 to retransmit the first data D1.

[0067] Please note that the charger 110 and the audio player 121 can pre-set the number of data bits for each data transmission action. The transmitted first data D1 can include check information so that the receiving audio player 121 can check the correctness of the received first data D1.

[0068] In order to mount the first data D1 on the charging voltage, in the embodiment of the present application, the voltage value of the charging voltage can be substantially equal to the voltage value of the voltage V2. When the first data D1 to be transmitted is a logic value of 0, the charger 110 can pull down the signal VA1 to the voltage V1. When the first data D1 to be transmitted is a logic value of 1, the charger 110 can restore the signal VA1 to the voltage V2. It is worth noting that in the present embodiment, the voltage V1 can be greater than the voltage value of the reference ground voltage, and does not need to be pulled down to 0 volts, and the signal VA1 does not need to have a full swing. In other words, during the transmission of the first data D1, the transmission efficiency of the charging voltage on the transmission line Vbus can be effectively maintained, and the transmission speed of the first data D1 can also be improved.

[0069] On the other hand, the way in which the audio player 121 transmits the second data D2 to the charger 110 is similar to the way in which the first data D1 is transmitted, and will not be described in detail herein.

[0070] When the transmission actions of the second data D2 and the first data D1 of the audio player 121 and the charger 110 are synchronously performed, the audio player 121 and the charger 110 can determine the voltage value of the signal VA1 on the transmission line Vbus according to the logic values ​​of the second data D2 and the first data D1. When the first data D1 and the second data D2 are both logic values ​​1, the charger 110 and the audio player 121 can synchronously pull up the signal VA1 on the transmission line Vbus to the voltage V2; when the first data D1 and the second data D2 are both logic values ​​0, the charger 110 and the audio player 121 can synchronously pull down the signal VA1 on the transmission line Vbus to the voltage V1; when the first data D1 and the second data D2 are logic values ​​0, 1 or 1, 0, one of the charger 110 and the audio player 121 can pull up the signal VA1 on the transmission line Vbus, and the other of the charger 110 and the audio player 121 can pull down the signal VA1 on the transmission line Vbus, and make the signal VA1 an intermediate voltage between the voltage V1 and the voltage V2.

[0071] Continuing with the above description, the charger 110 and the audio player 121 can respectively know the logic values ​​of the second data D2 and the first data D1 according to the size of the signal VA1. When the signal VA1 is substantially equal to the voltage V1, the charger 110 and the audio player 121 can respectively know that the second data D2 and the first data D1 are logic values ​​1 and 1; when the signal VA1 is substantially equal to the voltage V2, the charger 110 and the audio player 121 can respectively know that the second data D2 and the first data D1 are logic values ​​0 and 0. It is worth mentioning that when the signal VA1 is an intermediate voltage, the logic values ​​of the first data D1 and the second data D2 are complementary. Therefore, the charger 110 can read the logic value of the received second data D2 according to the logic value of the first data D1 sent by itself. Similarly, the audio player 121 can read the logic value of the received first data D1 according to the logic value of the second data D2 sent by itself.

[0072] Please refer to Figure 3 , Figure 3This is a schematic diagram of an audio device of another embodiment of the present application. The audio device 300 includes a charger 310 and an audio player 320. The audio player 320 is, for example, a headset. The charger 310 and the audio player 320 are coupled to each other via a transmission line Vbus. The charger 310 includes a charging voltage generating circuit for a booster 311, a control circuit 312, and a receiving circuit 313. The booster 311 generates a charging voltage VCP based on a source voltage VS, and provides the charging voltage VCP to the transmission line Vbus through a resistor R1. In this embodiment, the booster 311 can be a DC to DC voltage converter (DC to DC voltage converter), which is used to convert and boost the source voltage VS into a DC voltage to generate a charging voltage VCP.

[0073] The control circuit 312 includes a microcontroller 3121 and a signal transmitter 3122. The microcontroller 3121 is coupled to the signal transmitter 3122, the receiving circuit 313 and the booster 311. The signal transmitter 3122 is further coupled to the transmission line Vbus. The output end of the microcontroller 3121 can transmit a driving signal DV1 to the signal transmitter 3122 according to the logic value of the first data to be transmitted, and the signal transmitter 3122 can determine whether to pull down the signal VA1 on the transmission line Vbus according to the driving signal DV1. For example, when the logic value of the first data is 0, the microcontroller 3121 can transmit a driving signal DV1 with a logic value of 0 to the signal transmitter 3122, and the signal transmitter 3122 can pull down the signal VA1 on the transmission line Vbus according to the driving signal DV1. Conversely, when the logic value of the first data is 1, the microcontroller 3121 can transmit a driving signal DV1 with a logic value of 1 to the signal transmitter 3122, and the signal transmitter 3122 stops pulling down the signal VA1 on the transmission line Vbus according to the driving signal DV1, and restores the signal VA1 on the transmission line Vbus to a normal voltage value.

[0074] On the other hand, the audio player 320 includes a control circuit 322, a receiving circuit 323 and a charging control circuit 324. The charging control circuit 324 is coupled between the transmission line Vbus and the battery BAT, receives the signal VA1 on the transmission line Vbus, and charges the battery BAT according to the signal VA1.

[0075] In addition, the control circuit 322 includes a microcontroller 3221 and a signal transmitter 3222. The microcontroller 3221 is coupled to the charging controller 324, the signal transmitter 3222 and the receiving circuit 323. The signal transmitter 3222 is also coupled to the transmission line Vbus. The output end of the microcontroller 3121 can transmit a drive signal DV2 to the signal transmitter 3222 according to the logic value of the second data to be transmitted, and the signal transmitter 3222 can determine whether to pull down the signal VA1 on the transmission line Vbus according to the drive signal DV2. For example, when the logic value of the second data is 0, the microcontroller 3221 can transmit a drive signal DV2 with a logic value of 0 to the signal transmitter 3222, and the signal transmitter 3222 can pull down the signal VA1 on the transmission line Vbus according to the drive signal DV2. Conversely, when the logic value of the second data is 1, the microcontroller 3221 can transmit a driving signal DV2 with a logic value of 1 to the signal transmitter 3222, and the signal transmitter 3222 stops pulling down the signal VA1 on the transmission line Vbus according to the driving signal DV2, and restores the signal VA1 on the transmission line Vbus to a normal voltage value.

[0076] Regarding the reception of data, in the charger 310, the receiving circuit 313 is coupled to the transmission line Vbus and the input end of the microcontroller 3121. The receiving circuit 313 is used to receive the signal VA1 on the transmission line Vbus, and by filtering out the DC component signal of the signal VA1, the AC component signal of the signal VA1 can be obtained. Furthermore, the receiving circuit 313 can obtain the second data according to the AC component signal of the signal VA1. In terms of detailed operations, the receiving circuit 313 can amplify the AC component signal of the signal VA1 to obtain the read data, and transmit the read data to the input end of the microcontroller 3121. The microcontroller 3121 can perform an analog-to-digital conversion operation on the analog read data, and then obtain the second data in digital form.

[0077] In the audio player 320, the receiving circuit 323 is coupled to the transmission line Vbus and the input end of the microcontroller 3121. The receiving circuit 323 is used to receive the signal VA1 on the transmission line Vbus, and the AC component signal of the signal VA1 can be obtained by filtering the DC component signal of the signal VA1. Furthermore, the receiving circuit 323 can obtain the first data according to the AC component signal of the signal VA1. In the detailed operation, the receiving circuit 323 can amplify the AC component signal of the signal VA1 to obtain the read data, and transmit the read data to the input end of the microcontroller 3221. The microcontroller 3221 can perform an analog-to-digital conversion operation on the analog read data, and then obtain the first data in digital form.

[0078] Incidentally, in the embodiment of the present application, a voltage divider circuit composed of resistors R2 and R3 may be further provided in the audio player 320. The resistors R2 and R3 are used to divide the voltage of the signal VA1, and when the voltage value of the signal VA1 is abnormal, the interrupt signal INT generated is used to inform the audio player 3221 of the abnormal phenomenon of the signal VA1.

[0079] Please refer to the following synchronously Figure 3 as well as Figure 4 ,in Figure 4 The voltage waveform of the transmission line in the audio device of the embodiment of the present application. When the charger 310 and the audio player 320 synchronously transmit the first data and the second data, the signal transmitter 3122 and the signal transmitter 3222 can simultaneously adjust the voltage on the transmission line Vbus according to the logic values ​​of the first data and the second data. Figure 4 In the example, in the time interval T1, the first data and the second data are both logic values ​​0, and the signal transmitter 3122 and the signal transmitter 3222 can simultaneously pull down the signal VA1 on the transmission line Vbus to the voltage V2. In the time interval T2, the first data and the second data are logic values ​​0, 1 or 1, 0, respectively, and the signal transmitter 3122 and the signal transmitter 3222 can make the signal VA1 on the transmission line Vbus the intermediate voltage V3. Then, in the time interval T3, the first data and the second data are both logic values ​​1, and the signal transmitter 3122 and the signal transmitter 3222 can simultaneously pull up the signal VA1 on the transmission line Vbus to the voltage V1.

[0080] Correspondingly, in the time interval T1, the receiving circuit 313 of the charger 310 and the receiving circuit 323 of the audio player 320 can respectively read the second data and the first data as logic values ​​0 and 0 according to the voltage value of the signal VA1. In the time interval T2, the receiving circuit 313 of the charger 310 and the receiving circuit 323 of the audio player 320 can respectively read the second data and the first data as logic values ​​0 and 1 or 1 and 0 according to the voltage value of the signal VA1 based on the first data and the second data sent by their own signal transmitters 3122 and 3222 as logic values. In the time interval T3, the receiving circuit 313 of the charger 310 and the receiving circuit 323 of the audio player 320 can respectively read the second data and the first data as logic values ​​1 and 1 according to the voltage value of the signal VA1.

[0081] Please refer to Figure 5 , Figure 5This is a schematic diagram of an audio device according to another embodiment of the present application. The audio device 500 includes a charger 510 and an audio player 520. The charger 510 is coupled to the audio player 520 via a transmission line Vbus. The charger 510 includes a booster 511, a control circuit 512, and a receiving circuit 513. The audio player 520 includes a control circuit 522, a receiving circuit 523, and a charging control circuit 524. In this embodiment, the signal transmitter of the charger 510 is built into the control circuit 512 and coupled to the transmission line Vbus via a resistor R4. The signal transmitter of the audio player 520 can also be built into the control circuit 522 and coupled to the transmission line Vbus via a resistor R5.

[0082] When the charger 510 is to pull down the signal on the transmission line Vbus, the control circuit 512 can provide a bias voltage to the resistor R4, and pull down the voltage on the transmission line Vbus through the resistor R4. When the charger 510 does not want to pull down the signal on the transmission line Vbus, the control circuit 512 can float the end point coupled to the resistor R4. Similarly, when the audio player 520 is to pull down the signal on the transmission line Vbus, its control circuit 522 can provide another bias voltage to the resistor R5, and pull down the signal on the transmission line Vbus through the resistor R5. When the audio player 520 is not to pull down the signal on the transmission line Vbus, the control circuit 522 can float the end point coupled to the resistor R5.

[0083] In the charger 510, the receiving circuit 513 includes a capacitor C51 and an amplifier circuit 5131. The capacitor C51 is coupled in series between the transmission line Vbus and the amplifier circuit 5131. The amplifier circuit 5131 is also coupled to the control circuit 512. The capacitor C51 is used to receive the signal on the transmission line Vbus, to filter out the DC component signal on the transmission line Vbus, and to transmit the AC component signal on the transmission line Vbus to the amplifier circuit 5131. The amplifier circuit 5131 can be an amplifier circuit of any form, and is used to amplify the AC component signal to obtain the read signal RS1.

[0084] In the audio player 520, the receiving circuit 523 includes a capacitor C52 and an amplifier circuit 5231. The capacitor C52 is coupled in series between the transmission line Vbus and the amplifier circuit 5231. The amplifier circuit 5231 is also coupled to the control circuit 522. The capacitor C52 is used to receive the signal on the transmission line Vbus, to filter out the DC component signal on the transmission line Vbus, and to transmit the AC component signal on the transmission line Vbus to the amplifier circuit 5231. The amplifier circuit 5231 can be an amplifier circuit of any form, and is used to amplify the above-mentioned AC component signal to obtain the read signal RS2.

[0085] The control circuit 512 and the control circuit 522 are used to perform analog-to-digital conversion operations on the read signal RS1 and the read signal RS2 respectively, so as to obtain the second data and the first data in digital form respectively.

[0086] Incidentally, based on the data transmission process, the audio device 500 may have a certain degree of noise. Therefore, based on the data transmission frequency of the audio device 500, the signal on the transmission line Vbus may have an unstable voltage value. Therefore, when performing the judgment action of the logic value of the second data and the first data, the charger 510 and the audio player 520 can judge the logic value of the second data and the first data respectively received through multiple voltage ranges. Among them, the charger 510 and the audio player 520 can set three ranges respectively to judge the logic value of the second data and the first data, and thereby improve the anti-noise ability of the audio device 500.

[0087] Please refer to Figure 6 , Figure 6 This is a flow chart of a control method for an audio device according to an embodiment of the present application. In step S610, the charger transmits a synchronization signal to the audio player. In step S620, the charger provides a charging voltage to the audio player. In step S630, the charger and the audio player can provide data packets at the same time. In step S640, a judgment action can be performed to determine whether the data packet is correctly received. If the judgment result is yes, step S650 can be executed to determine whether there is a next data packet to be transmitted. If the judgment result of step S640 is no, step S641 is executed.

[0088] In step S641, the number of transmissions may be accumulated. In step S642, it is determined whether the number of transmissions is greater than a preset threshold. If the number of transmissions is not greater than the threshold, step S630 may be re-executed. Conversely, if the number of transmissions is greater than the threshold, step S643 may be executed to reset the number of transmissions, and step S610 may be executed to cause the charger to resend the synchronization signal to the player to restart the data transmission action.

[0089] In addition, when it is determined in step S650 that there are still data packets to be transmitted, step S630 can be executed to perform subsequent data packet transmission operations. Conversely, if it is determined in step S650 that there are no data packets to be transmitted, this process can be terminated.

[0090] Please refer to Figure 7 , Figure 7This is a flow chart of a control method of an audio device according to another embodiment of the present application. In step S710, the charger and at least one audio player are coupled to each other via a transmission line. In step S720, the charger transmits a charging voltage and first data to at least one audio player via the transmission line. And, in step S730, at least one audio player transmits second data to the charger via the transmission line.

[0091] The implementation details of the above steps have been described in detail in the aforementioned multiple embodiments and will not be elaborated here.

[0092] In summary, in the audio device of the present application, the charger and the audio player are coupled to each other via a transmission line, wherein the transmission line not only provides the charging voltage provided by the charger, but also provides a medium for the charger and the audio player to transmit data to each other at the same time. In this way, the charger and the audio player can perform data transmission actions with each other at the same time, effectively improving the working efficiency of the audio device.

Claims

1. An audio device, characterized in that: include: A charger, coupled to the transmission line, for generating a charging voltage; as well as at least one audio player coupled to the charger via the transmission line, The charger transmits the charging voltage to the at least one audio player through the transmission line, and the charger transmits first data to the at least one audio player through the transmission line, and the charger receives second data from the at least one audio player through the transmission line.

2. The audio device according to claim 1, characterized in that The charger causes the first data to be mounted on the charging voltage to be transmitted to the at least one audio player, and at the same time, the at least one audio player causes the second data to be mounted on the charging voltage to be transmitted to the charger.

3. The audio device according to claim 2, characterized in that The charger comprises: A charging voltage generating circuit generates the charging voltage according to a source voltage and provides the charging voltage to the transmission line; A control circuit coupled to the transmission line, generating the first data, and causing the first data to be mounted on the charging voltage; and The receiving circuit is coupled to the transmission line and filters out the charging voltage to obtain the second data.

4. The audio device according to claim 3, characterized in that The control circuit determines whether to pull down the charging voltage to a first voltage to mount the first data to the charging voltage according to a logic value of the first data.

5. The audio device according to claim 4, characterized in that The first voltage is greater than a reference ground voltage.

6. The audio device according to claim 3, characterized in that The receiving circuit comprises: Capacitors; and Amplifier circuit; The capacitor is connected in series between the transmission line and the amplifier circuit. The capacitor is used to filter out the DC component signal of the signal of the transmission line to obtain an AC component signal. The amplifier circuit amplifies the AC component signal to obtain read data.

7. The audio device according to claim 6, characterized in that The amplifier circuit also transmits the read data in analog form to the control circuit, and the control circuit converts the read data into digital form to obtain the second data.

8. The audio device according to claim 3, characterized in that The charging voltage generating circuit is a boost circuit.

9. The audio device according to claim 1, characterized in that The control circuit comprises: microcontroller; and The signal transmitter is coupled to the microcontroller and the transmission line, and is used for mounting the first data on the charging voltage.

10. The audio device according to claim 1, characterized in that The at least one audio player comprises: A charging control circuit, coupled to the transmission line, providing the charging voltage to charge the battery; a receiving circuit, coupled to the transmission line, filtering the charging voltage to obtain the first data; and The control circuit is coupled to the transmission line, generates the second data, and causes the second data to be mounted on the charging voltage.

11. The audio device according to claim 10, characterized in that The control circuit determines whether to pull down the charging voltage to a second voltage to mount the first data to the charging voltage according to the logic value of the second data.

12. The audio device according to claim 11, characterized in that The second voltage is greater than a reference ground voltage.

13. The audio device according to claim 10, characterized in that The receiving circuit comprises: Capacitors; and Amplifier circuit; The capacitor is connected in series between the transmission line and the amplifier circuit. The capacitor is used to filter out the DC component signal of the signal of the transmission line to obtain an AC component signal. The amplifier circuit amplifies the AC component signal to obtain read data.

14. The audio device according to claim 9, characterized in that The amplifier circuit also transmits the read data in analog form to the control circuit, and the control circuit converts the read data into digital form to obtain the first data.

15. The audio device according to claim 1, characterized in that The control circuit comprises: microcontroller; and The signal transmitter is coupled to the microcontroller and the transmission line, and is used for mounting the second data on the charging voltage.

16. A method for controlling an audio device, characterized in that: include: coupling the charger and at least one audio player to each other via a transmission line; Enable the charger to transmit a charging voltage and first data to the at least one audio player through the transmission line; as well as The at least one audio player transmits second data to the charger through the transmission line.

17. The control method according to claim 16, characterized in that: The control method further comprises: Providing the charger so that the first data is mounted on the charging voltage to be transmitted to the at least one audio player; and At the same time, the at least one audio player is provided so that the second data is mounted on the charging voltage to be transmitted to the charger.

18. The control method according to claim 17, characterized in that: The control method further comprises: enabling the charger to determine whether to pull down the charging voltage to a first voltage according to a logic value of the first data so as to load the first data to the charging voltage; and The at least one audio player determines whether to pull down the charging voltage to the second voltage according to the logic value of the second data to mount the second data to the charging voltage.

19. The control method according to claim 18, characterized in that: The first voltage and the second voltage are both greater than a reference ground voltage.

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