WO2023071391A1 - Wireless headphone - Google Patents

Abstract

Provided in an embodiment of the present application is a wireless headphone, relating to the field of electronics, and capable of avoiding actual bandwidth limitations between the headphone and a terminal device. The wireless headphone comprises a first earphone and a second earphone. The first earphone comprises a first system on chip and a first radio-frequency antenna, the first system chip being coupled to the first radio-frequency antenna. The second earphone comprises a second system on chip. A first transmission line is connected between the first system on chip and the second system on chip. The first system on chip is configured to, by means of the first radio-frequency antenna, wirelessly communicate with a terminal device, and receive a first radio-frequency signal sent by the terminal device. The first system on chip is configured to transmit a transmission signal generated according to the first radio-frequency signal to the second system chip by means of the first transmission line.

Description

wireless headphones

This application claims priority to a Chinese patent application with application number 202111276676.X and application title "Head-mounted Wireless Headphones" filed with the State Intellectual Property Office on October 29, 2021, the entire contents of which are incorporated herein by reference middle.

technical field

The embodiment of the present application relates to the field of electronic technology, and in particular to a wireless headphone.

Background technique

Head-mounted wireless earphones can get rid of the limitation of connecting wires with terminal devices (such as mobile phones, laptops, tablets, etc.), and head-mounted wireless earphones have a better sound field and wearing comfort, so they have become a popular choice for all kinds of music lovers. The device of choice for listening to music.

In a true wireless head-mounted wireless headset, a system chip (system on chip, SOC, or system on chip) and a radio frequency antenna coupled with the system chip are respectively arranged in the left and right earphones. The SOC may include a radio frequency chip, a Bluetooth chip , digital signal processor, active noise reduction encoder, etc., the earphones on the left and right sides can be wirelessly connected to the terminal device. At present, there are two ways to realize the communication between the left and right earphones of true wireless, forwarding mode or monitoring mode. In the forwarding mode, the SOC of the main earphone establishes a Bluetooth connection with the mobile phone to receive the audio data sent by the mobile phone in the air, and the SOC of the main earphone wirelessly forwards the audio data to the SOC of the secondary earphone; Establish a Bluetooth connection with the terminal device to receive the audio data sent by the terminal device in the air, and the secondary ear monitors and receives the audio data in the air. If the secondary ear does not monitor the audio data, the SOC of the main earphone wirelessly forwards the audio data to the SOC of the secondary earphone. Therefore, no matter in forwarding mode or listening mode, the SOC of the main earphone will spend part of the time communicating with the SOC of the secondary earphone, and this part of the time cannot perform data transmission with the mobile phone, resulting in actual communication between the earphone and the terminal device. Bandwidth is limited.

Contents of the invention

Embodiments of the present application provide a wireless headset, which can avoid actual bandwidth limitation between the headset and the terminal device.

In a first aspect, a head-mounted wireless headset is provided. The headset wireless earphone includes a first earphone and a second earphone; the first earphone includes: a first system chip and a first radio frequency antenna, wherein the first system chip is coupled to the first radio frequency antenna. The second earphone includes: a second system chip. A first transmission line is connected between the first system chip and the second system chip. The first system chip is configured to wirelessly communicate with the terminal device through the first radio frequency antenna, and receive the first radio frequency signal sent by the terminal device; the first system chip is configured to transmit the signal to the second system chip through the first transmission line and transmitting the transmission signal generated according to the first radio frequency signal. In this way, when the first system chip is wirelessly connected to the terminal device through the first radio frequency antenna and receives the first radio frequency signal sent by the terminal device, the first system chip can transmit the signal to the second system chip in a wired manner through the first transmission line. The transmission signal is generated according to the first radio frequency signal. In this way, wireless communication and transmission of signals between the earphones on both sides is avoided, and thus the limitation of the actual bandwidth between the earphones and the terminal device is also avoided. Moreover, since the second system chip is also provided in the second earphone, the second system chip can process the transmission signal transmitted by the first system chip of the first earphone, avoiding that all radio frequency signals are processed by the earphone on one side. , to avoid computing power limitation.

In a possible implementation manner, the first system chip includes: a first radio frequency circuit, a first short-distance communication core, and a first digital signal processor; wherein, the first radio frequency circuit is coupled to the first radio frequency antenna; the second The system chip includes: a second digital signal processor; wherein the first digital signal processor is connected to the second digital signal processor through a first transmission line; the first radio frequency circuit is configured to receive a first radio frequency signal from a first radio frequency antenna , and send the first radio frequency signal to the first short-distance communication core; the first short-distance communication core is configured to demodulate the first radio frequency signal into an audio coded data packet, and send the audio coded data packet to the first digital Signal processor; a first digital signal processor, configured to decode the first channel data and the second channel data in the audio encoding data packet, and transmit the second channel data to the second channel through the first transmission line digital signal processor. In this solution, the signal transmission between the first earphone and the second earphone is realized mainly through the first transmission line connected between the first digital signal processor and the second digital signal processor. The short-distance communication core may include but not limited to a Bluetooth chip, a green tooth chip, a ZigBee chip, a near field communication (near field communication, NFC) chip or other chips for short-distance wireless communication derived in the future.

In a possible implementation, usually the first digital signal processor plays the first audio channel data according to the first clock signal generated by the crystal oscillator on the first system chip in the first earphone; and the second digital signal processor plays the data according to the The second clock signal generated by the crystal oscillator on the second system chip in the second earphone plays the second channel data; because the clock signal provided by the crystal oscillator in the first earphone and the crystal oscillator in the second earphone usually has a deviation of 20-80us Therefore, there is also a 20-80us deviation between the generated first audio signal and the second audio signal, which can be noticed by audiophiles, resulting in poor user experience. In order to realize the playback synchronization of the first earphone and the second earphone, the second system chip also includes: a second short-distance communication core; the first short-distance communication core is connected to the second short-distance communication core through a second transmission line; The communication core is also configured to send the first synchronization signal to the second short-distance communication core through the second transmission line, and send the first synchronization signal to the first digital signal processor; the first digital signal processor is specifically configured to Play the first channel data according to the first synchronization signal, generate a first audio signal output to the speaker of the first earphone; the second digital signal processor is specifically configured to play the second channel data according to the first synchronization signal, generate The second audio signal is output to the speaker of the second earphone.

In a possible implementation, based on the above-mentioned wireless headset, if the first headset is the left ear, it will usually be worn on the left ear. If the terminal device is placed on the right side of the human body (for example, in the right pocket) , the radio frequency signal needs to be received by the first radio frequency antenna after passing through the human body, which will weaken the received signal of the first radio frequency antenna and make the radio frequency signal received by the first radio frequency circuit weak. Then in order to solve this problem, the second system chip also includes: a second radio frequency circuit and a second short distance communication core; the second earphone also includes a second radio frequency antenna; the second radio frequency circuit is coupled with the second radio frequency antenna; the first short distance The communication core is connected to the second short-distance communication core through a second transmission line; the first short-distance communication core is also configured to determine a first signal quality parameter according to the first radio frequency signal; the second radio frequency circuit is configured to receive the signal from the second The radio frequency antenna receives the second radio frequency signal sent by the terminal device, and sends the second radio frequency signal to the second short-distance communication core; the second short-distance communication core is configured to determine a second signal quality parameter according to the second radio frequency signal, And the second signal quality parameter is sent to the first short-distance communication core through the second transmission line; the first short-distance communication core is configured to determine the quality of the first radio frequency signal according to the first signal quality parameter and the second signal quality parameter. When the quality of the second radio frequency signal is determined, it is determined to demodulate the first radio frequency signal into an audio coded data packet. In this way, when the quality of the first radio frequency signal is better than that of the second radio frequency signal through the above method, the first short-distance communication core demodulates the first radio frequency signal into an audio coded data packet, then the first earphone is the main earphone, and the second earphone is the main earphone. The second earphone is a pair of earphones; on the contrary, if the second short-distance communication core determines that the quality of the second radio frequency signal is better than the quality of the first radio frequency signal, the second short-distance communication core demodulates the second radio frequency signal into audio coded data package, the second earphone is the main earphone, and the first earphone is the secondary earphone. In addition, the above-mentioned first signal quality parameter or second signal quality parameter includes reference signal receiving power (reference signal receiving power, RSRP), reference signal receiving quality (reference signal receiving quality, RSRQ), received signal strength indication (received signal strength indicator, RSSI), packet loss rate (packet error rate, PER), and signal to interference plus noise ratio (signal to interference plus noise ratio, SINR) in one or more.

In a possible implementation manner, the second transmission line includes a universal asynchronous transceiver UART bus.

In a possible implementation manner, the first transmission line includes an integrated circuit built-in audio I2S bus.

In a possible implementation manner, the first system chip includes: a first radio frequency circuit, a first short-distance communication core, and a first digital signal processor; the second system chip includes: a second short-distance communication core and a second digital signal processor Signal processor; the first short-distance communication core is connected to the second short-distance communication core through a first transmission line; the first radio frequency circuit is configured to receive the first radio frequency signal from the first radio frequency antenna, and send the first radio frequency signal to The first short-distance communication core; the first short-distance communication core, configured to demodulate the first radio frequency signal into an audio coded data packet, and send the audio coded data packet to the first digital signal processor, and pass the first transmission line Send the audio encoding data packet to a second short-distance communication core; the second short-distance communication core is configured to send the audio encoding data packet to a second digital signal processor; the first digital signal processor is configured to The first channel data is decoded in the audio encoding data packet; the second digital signal processor is configured to decode the second channel data in the audio encoding data packet. In this solution, the signal transmission between the first earphone and the second earphone is realized mainly through the first transmission line connected between the first short-distance communication core and the second short-distance communication core.

In a possible implementation manner, in order to achieve playback synchronization between the first earphone and the second earphone. The first short-distance communication core is also configured to send a first synchronization signal to the second short-distance communication core through the first transmission line, and send the first synchronization signal to the first digital signal processor; the second short-distance communication core, Specifically, it is configured to send the first synchronization signal to the second digital signal processor; the first digital signal processor is specifically configured to play the first channel data according to the first synchronization signal, and generate a signal that is output to the speaker of the first earphone The first audio signal; the second digital signal processor, specifically configured to play the second channel data according to the first synchronization signal, and generate a second audio signal output to the speaker of the second earphone.

In a possible implementation, based on the above-mentioned wireless headset, if the first headset is the left ear, it will usually be worn on the left ear. If the terminal device is placed on the right side of the human body (for example, in the right pocket) , the radio frequency signal needs to be received by the first radio frequency antenna after passing through the human body, which will weaken the received signal of the first radio frequency antenna and make the radio frequency signal received by the first radio frequency circuit weak. Then in order to solve this problem, the second system chip also includes: a second radio frequency circuit; the second earphone also includes a second radio frequency antenna; the second radio frequency circuit is coupled to the second radio frequency antenna; the first short-distance communication core is configured to A radio frequency signal for determining a first signal quality parameter; a second radio frequency circuit configured to receive a second radio frequency signal sent by a terminal device from a second radio frequency antenna, and send the second radio frequency signal to a second short-distance communication core; Two short-distance communication cores, configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the first short-distance communication core through the first transmission line; the first short-distance communication core is configured to It is configured to determine to demodulate the first radio frequency signal into an audio coded data packet when it is determined according to the first signal quality parameter and the second signal quality parameter that the quality of the first radio frequency signal is better than that of the second radio frequency signal. In this way, when the quality of the first radio frequency signal is better than that of the second radio frequency signal through the above method, the first short-distance communication core demodulates the first radio frequency signal into an audio coded data packet, then the first earphone is the main earphone, and the second earphone is the main earphone. The second earphone is a pair of earphones; on the contrary, if the second short-distance communication core determines that the quality of the second radio frequency signal is better than the quality of the first radio frequency signal, the second short-distance communication core demodulates the second radio frequency signal into audio coded data package, the second earphone is the main earphone, and the first earphone is the secondary earphone.

In a possible implementation manner, the first transmission line includes a universal asynchronous transceiver UART bus.

In a possible implementation manner, the first system chip includes: a first radio frequency circuit, a first short-distance communication core, and a first digital signal processor; wherein, the first radio frequency circuit is coupled to the first radio frequency antenna; the second system chip Including: a second short-distance communication core and a second digital signal processor; the first radio frequency circuit is connected to the second short-distance communication core through a first transmission line; the first radio frequency circuit is configured to transmit data from the first radio frequency antenna receiving the first radio frequency signal, sending the first radio frequency signal to the first short-distance communication core, and sending the first radio frequency signal from the first transmission line to a second short-distance communication core; The first short-range communication core is configured to demodulate the first radio frequency signal into a first audio encoding data packet, and send the first audio encoding data packet to the first digital signal processor; The first digital signal processor is configured to decode the first channel data from the first audio encoding data packet; the second short-distance communication core is configured to demodulate the first radio frequency signal Encoding data packets for the second audio, and sending the second audio encoding data packets to the second digital signal processor; the second digital signal processor is configured to decode from the second audio encoding data packets Second channel data. In this solution, the signal transmission between the first earphone and the second earphone is realized mainly through the first transmission line connected between the first radio frequency circuit and the second short-distance communication core.

In a possible implementation, based on the above-mentioned wireless headset, if the first headset is the left ear, it will usually be worn on the left ear. If the terminal device is placed on the right side of the human body (for example, in the right pocket) , the radio frequency signal needs to be received by the first radio frequency antenna after passing through the human body, which will weaken the received signal of the first radio frequency antenna and make the radio frequency signal received by the first radio frequency circuit weak. To solve this problem, the second system chip further includes: a second radio frequency circuit; the second earphone further includes a second radio frequency antenna; the second radio frequency circuit is coupled to the second radio frequency antenna; a radio frequency circuit configured to receive a second radio frequency signal sent by the terminal device from the second radio frequency antenna, and send the second radio frequency signal to the second short-distance communication core; the first short-distance The communication core is connected to the second short-distance communication core through a second transmission line; the first short-distance communication core is configured to determine a first signal quality parameter according to the first radio frequency signal, and send the first The signal quality parameter is sent to the second short-distance communication core through the second transmission line; the second short-distance communication core is configured to determine a second signal quality parameter according to the second radio frequency signal, and transmit the The second signal quality parameter is sent to the first short-distance communication core through the second transmission line; the first short-distance communication core is configured to, according to the first signal quality parameter and the second signal quality When the parameter determines that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal, it is determined to demodulate the first radio frequency signal into a first audio coded data packet; the second short-distance communication core is It is configured to determine to demodulate the first radio frequency signal into The second audio encoding data packet. In this way, when the quality of the first radio frequency signal is better than that of the second radio frequency signal through the above method, the first short-distance communication core will demodulate the first radio frequency signal into a first audio coded data packet, and the second short-distance communication core will The first radio frequency signal is demodulated into the second audio coded data packet, then the first earphone is the main earphone, and the second earphone is the auxiliary earphone; otherwise, if the second short-distance communication core determines that the quality of the second radio frequency signal is better than that of the first radio frequency signal quality, the first short-distance communication core demodulates the second radio frequency signal into the first audio coded data packet, and the second short-distance communication core demodulates the second radio frequency signal into the second audio coded data packet, then the second The second earphone is the main earphone, and the first earphone is the auxiliary earphone.

In a possible implementation manner, in order to achieve playback synchronization between the first earphone and the second earphone. The first short-distance communication core is connected to the second short-distance communication core through a second transmission line; the first short-distance communication core is also configured to communicate with the second short-distance communication core through the second transmission line The core sends a first synchronization signal, and sends the first synchronization signal to the first digital signal processor; the second short-distance communication core is specifically configured to send the first synchronization signal to the The second digital signal processor; the first digital signal processor is specifically configured to play the first channel data according to the first synchronization signal, and generate a first audio signal output to the speaker of the first earphone The second digital signal processor is specifically configured to play the second channel data according to the first synchronization signal, and generate a second audio signal output to the speaker of the second earphone.

In a possible implementation manner, the first transmission line includes a radio frequency coaxial line.

In a possible implementation manner, the first system chip further includes a first codec; the second system chip further includes a second codec; the first digital signal processor is configured to play the first channel data , generating a first audio signal output to a speaker of the first earphone, and sending the first audio signal to the first codec; the first codec is configured to perform at least the following on the first audio signal One or more of: active noise cancellation (ANC) and equalize (EQ); a second digital signal processor configured to play second channel data to generate output to a second headphone the second audio signal of the loudspeaker, and send the second audio signal to the second codec; the second codec is configured to at least perform one or more of the following processes on the second audio signal Items: active noise reduction ANC and balanced EQ. In this possible implementation manner, the codec performs one or more of the following processes on the channel data: active noise reduction ANC and equalization EQ, so as to obtain better sound quality.

In a possible implementation manner, the first system chip includes: a first radio frequency circuit, a first short-distance communication core, a first digital signal processor, and a first codec; wherein the first radio frequency circuit Coupling the first radio frequency antenna; the second system chip includes: a second codec; the second codec is connected to the first digital signal processor through the first transmission line; the first radio frequency A circuit configured to receive the first radio frequency signal from the first radio frequency antenna and send the first radio frequency signal to the first short-distance communication core; the first short-distance communication core is configured In order to demodulate the first radio frequency signal into an audio coded data packet, and send the audio coded data packet to the first digital signal processor; the first digital signal processor is configured to The first audio channel data and the second audio channel data are decoded in the audio encoding data packet; the first digital signal processor is configured to play the first audio channel data, and generate the first audio channel data output to the speaker of the first earphone an audio signal, and send the first audio signal to the first codec; the first digital signal processor is configured to play the second channel data, and generate an output to the second The second audio signal of the speaker of the earphone, and send the second audio signal to the second codec through the first transmission line; the first codec is configured to The signal is at least one or more of the following processes: active noise reduction ANC and equalization EQ; the second codec is configured to at least perform one or more of the following processes on the second audio signal : Active noise reduction ANC and balanced EQ. In this solution, the signal transmission between the first earphone and the second earphone is realized mainly through the first transmission line connected between the first digital signal processor and the second codec.

In a possible implementation, based on the above-mentioned wireless headset, if the first headset is the left ear, it will usually be worn on the left ear. If the terminal device is placed on the right side of the human body (for example, in the right pocket) , the radio frequency signal needs to be received by the first radio frequency antenna after passing through the human body, which will weaken the received signal of the first radio frequency antenna and make the radio frequency signal received by the first radio frequency circuit weak. To solve this problem, the second system chip also includes: a second radio frequency circuit, a second short-distance communication core, and a second digital signal processor; the second earphone also includes a second radio frequency antenna; the second A radio frequency circuit is coupled to the second radio frequency antenna; the first short-distance communication core is configured to determine a first signal quality parameter according to the first radio frequency signal; the second radio frequency circuit is configured to obtain from the The second radio frequency antenna receives the second radio frequency signal sent by the terminal device, and sends the second radio frequency signal to the second short-distance communication core; the second short-distance communication core is configured to according to the A second radio frequency signal, determining a second signal quality parameter, and sending the second signal quality parameter to the first short-distance communication core through the first transmission line; the first short-distance communication core is configured to When it is determined according to the first signal quality parameter and the second signal quality parameter that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal, determine to demodulate the first radio frequency signal into an audio code data pack. In this way, when the quality of the first radio frequency signal is better than that of the second radio frequency signal through the above method, the first short-distance communication core demodulates the first radio frequency signal into an audio coded data packet, then the first earphone is the main earphone, and the second earphone is the main earphone. The second earphone is a pair of earphones; on the contrary, if the second short-distance communication core determines that the quality of the second radio frequency signal is better than the quality of the first radio frequency signal, the second short-distance communication core demodulates the second radio frequency signal into audio coded data package, the second earphone is the main earphone, and the first earphone is the secondary earphone.

Description of drawings

FIG. 1 is a schematic structural diagram of a wireless headset provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application;

FIG. 3 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application;

FIG. 4 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application;

FIG. 5 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application;

FIG. 6 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application;

FIG. 7 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application;

FIG. 8 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application;

Fig. 9 is a schematic structural diagram of a wireless headset provided by another embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In this application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b or c can represent: a, b, c, a and b, a and c, b and c, or, a and b and c, wherein a, b and c can be single or multiple. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect, Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order. For example, "first" in the first earphone and "second" in the second earphone in the embodiment of the present application are only used to distinguish different earphones. The first, second, etc. descriptions that appear in the embodiments of this application are only for illustration and to distinguish the description objects. Any limitations of the examples.

It should be noted that, in this application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "for example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

Head-worn wireless headphones can get rid of the limitation of connecting wires with terminal devices (such as smartphones, laptops, tablets, etc.), and head-worn wireless headphones have a better sound field and wearing comfort, so they have become a popular choice for various music hobbies. The preferred device for listening to music. The terminal device in the embodiment of the present application can be a mobile phone, a tablet computer, a desktop, a laptop, a handheld computer, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook, and a cellular phone, a personal digital Assistant (personal digital assistant, PDA), augmented reality (augmented reality, AR)\virtual reality (virtual reality, VR) equipment and other electronic equipment, the embodiment of the present application does not make special restrictions on the specific form of the terminal equipment, the following embodiments The terminal device is a mobile phone as an example for description.

A kind of wireless headphone 100 as shown in Figure 1, the exterior structure of this wireless headphone 100 comprises earphone 1 and earphone 2, and earphone 1 and earphone 2 pass head beam 3 (for example, can be shown in Figure 1 Out of the arc support frame) connection. In some examples, as shown in FIG. 2, based on the appearance structure of the wireless headset 100 shown in FIG. 1, the Bluetooth headset 100 includes a system chip 12 (system on chip, SOC, or system on a chip) , the SOC12 may include a radio frequency chip, a Bluetooth chip, a digital signal processor, a codec (such as an active noise canceling codec (active noise canceling codec, ANC codec)), etc., the SOC12 is usually set in the left and right earphones In an earphone (earphone 1 shown in Figure 2), the SOC12 can be connected with a terminal device (such as the mobile phone 200 in Figure 2) through the radio frequency antenna 11, and receive the audio signal transmitted by the terminal device; between the left and right earphones Signal transmission is carried out between the two earphones through the transmission line 31 arranged in the head beam 3. For example, when the SOC12 is arranged in the earphone 1 on the left side, after the SOC12 receives the audio signal transmitted by the mobile phone 200, the audio signal of the left ear Play through the speaker 13 of the earphone 1 on the left side, and transmit the audio signal of the right ear to the earphone 2 on the right side through the transmission line 31 and play it through the speaker 23 . Due to the use of the SOC set in one earphone, the computing power and the provided interface are limited, and multiple transmission lines (for example: audio lines, power lines and other signal lines, etc.) need to be set in the head beam 3. There may be as many as 20 or more), these transmission lines have the risk of breaking, which is not conducive to folding and storage.

In order to solve the above problems, the embodiment of the present application also provides a true wireless stereo (true wireless stereo, TWS) headset wireless headset, and the headset wireless headset can be provided with SOC and radio frequency antennas in the two headsets respectively. For example, a kind of headset wireless earphone 100 as shown in Figure 3, this headset wireless earphone 100 comprises earphone 1 and earphone 2, earphone 1 comprises SOC12, and the radio frequency antenna 11 coupled with this SOC12; Earphone 2 comprises SOC22, and the radio frequency antenna 21 coupled with the SOC22. Optionally, the earphone 1 may further include a speaker 13 and the earphone 2 may further include a speaker 23 , the speaker 13 in the earphone 1 is coupled to the SOC 12 , and the speaker 23 in the earphone 2 is coupled to the SOC 22 . Based on the wireless headset shown in FIG. 3 , there are two ways to realize the communication between the left and right headsets, a forwarding mode or a monitoring mode. In the forwarding mode, the SOC12 of the main earphone (for example, earphone 1) establishes a Bluetooth connection with the mobile phone 200 to receive the audio data sent by the mobile phone 200 in the air, and the SOC12 of the main earphone wirelessly forwards the audio data to the secondary earphone (for example, it can It is the SOC22 of the earphone 2); In the monitoring mode, the SOC12 of the main earphone establishes a bluetooth connection with the mobile phone 200 to receive the audio data sent by the mobile phone 200 in the air, and the secondary earphone monitors and receives the audio data in the air. If the secondary ear does not monitor the audio data, the SOC12 of the main earphone wirelessly forwards the audio data to the SOC22 of the secondary earphone. Therefore, no matter in the forwarding mode or the monitoring mode, the SOC12 of the main earphone will have a part of the time for communicating with the SOC22 of the sub-earphone, and this part of the time cannot carry out data transmission with the mobile phone 200, resulting in actual communication between the earphone and the mobile phone. Bandwidth is limited. In particular, the higher the duty cycle of wireless transmission between the main earphone and the auxiliary earphone, the more difficult it is to support high-definition music playback.

In order to avoid the limitation of the actual bandwidth between the headset and the mobile phone, improve user experience. The embodiment of the present application also provides a wireless headset. As shown in FIG. 4 , the wireless headset 100 includes a headset 1, a headset 2 and a first transmission line 31; , SOC12 is coupled with radio frequency antenna 11. The earphone 2 includes: a system chip SOC22. SOC12 and SOC22 are connected through a first transmission line 31 . SOC12 is configured to be wirelessly connected to the mobile phone 200 through the radio frequency antenna 11, and receives the first radio frequency signal sent by the mobile phone 200; SOC12 is configured to transmit the transmission signal generated according to the first radio frequency signal to the SOC22 through the first transmission line 31.

The above-mentioned earphone 1 can be a left earphone or a right earphone. When earphone 1 is the left earphone, earphone 2 is the right earphone. When earphone 1 is the right earphone, earphone 2 is the left earphone. Exemplarily, the above-mentioned first transmission line 31 may be arranged in a mechanical structure (such as the head beam 3 ) connecting the earphone 1 and the earphone 2 . For example, the headset wireless earphone may further include an arc-shaped support frame through which the earphone 1 and the earphone 2 are connected, and the first transmission line 31 between the SOC12 and the SOC22 may be arranged in the arc-shaped support frame. The embodiment of the present application does not limit the specific arrangement position of the first transmission line 31 between the SOC12 and the SOC22, which is only an exemplary description here.

The above-mentioned first transmission line 31 may be a universal asynchronous transceiver (universal asynchronous receiver/transmitter, UART) bus, or an integrated circuit built-in audio bus (inter-integrated circuit sound, I2S) integrated circuit bus (inter-integrated circuit bus, I2C), RF coaxial cable, etc. The embodiment of the present application does not limit the specific type of the first transmission line. In addition, the earphone 1 may further include a speaker 13 , and the speaker 13 is coupled with the SOC 12 . The earphone 2 may also include a speaker 23 coupled to the SOC 22 .

It should be noted that the transmission signal may include the first radio frequency signal itself or a signal generated according to the first radio frequency signal. Specifically, the transmission signal may include channel data transmitted between digital signal processors (DSP) in the following examples, audio coded data packets, synchronization signals, and radio frequency signals transmitted between short-distance communication cores For quality parameters, radio frequency signals transmitted between the radio frequency circuit and the short-distance communication core, audio signals transmitted between the DSP and the codec, etc., refer to the detailed description of the following examples for details.

In this way, when the SOC12 is wirelessly connected to the terminal equipment through the radio frequency antenna 11 and receives the first radio frequency signal sent by the terminal equipment, the SOC12 can transmit the transmission signal generated according to the first radio frequency signal to the SOC22 in a wired manner through the first transmission line 31 In this way, wireless communication and transmission of signals between the earphones on both sides is avoided, and thus the limitation of the actual bandwidth between the earphones and the mobile phone is also avoided. Moreover, since the earphone 2 is also provided with the SOC22, the SOC22 can process the transmission signal transmitted by the SOC12 of the earphone 1, avoiding that all radio frequency signals are processed by the earphone on one side, and the computing power is limited.

Specifically, in the first application scenario, as shown in FIG. 5 , the SOC 12 includes: a radio frequency circuit 121, a short-distance communication core 122, and a digital signal processor (digital signal processor, DSP) 123; wherein, the radio frequency circuit 121 is coupled to a radio frequency Antenna 11 ; SOC22 includes: DSP223 ; DSP123 and DSP223 are connected through a first transmission line 31 . Wherein, the radio frequency circuit 121 is configured to receive the first radio frequency signal from the radio frequency antenna 11, and send the first radio frequency signal to the short-distance communication core 122; the short-distance communication core 122 is configured to demodulate the first radio frequency signal into audio coded data packet, and send the audio coded data packet to DSP123; DSP123 is configured to decode the first channel data and the second channel data in the audio coded data packet, and pass the second channel data through the first transmission line 31 Data transfer to DSP223. An exemplary first transmission line 31 may be an I2S bus.

In the following example, the short-distance communication core may include but not limited to Bluetooth chip, green tooth chip, ZigBee chip, near field communication (near field communication, NFC) chip or other chips for short-distance wireless communication derived in the future. The embodiment of the application does not limit the specific type of the short-range wireless communication chip, and the following embodiments take the short-range wireless communication chip as a Bluetooth chip as an example for illustration.

Specifically, as shown in FIG. 4 and FIG. 5, after the mobile phone 200 sends the first radio frequency signal carrying audio data to the radio frequency antenna 11, the radio frequency circuit 121 is mainly used to receive the first radio frequency signal from the radio frequency antenna 11; then, the Bluetooth The chip 122 demodulates the first radio frequency signal into an audio coded data packet (for example: base transport header (BTH packet) of subband coding or advanced audio coding (subband coding/advanced audio coding, SBC/AAC); Afterwards, the DSP123 performs SBC/AAC decoding on the audio coded data packet to generate a pulse code modulation (pulse code modulation, PCM) code stream, which contains the first channel data and the second channel data, wherein the first channel The channel data and the second channel data are respectively used for playback in the earphone 1 or earphone 2 speakers.

For example, the first channel data is left channel data, then DSP123 plays this first channel data, outputs the first audio signal to the speaker 13 of earphone 1, drives this speaker 13; Then the second channel data is right channel data, the DSP223 plays the second channel data, outputs the second audio signal to the speaker 23 of the earphone 2, and drives the speaker 23. It should be noted that, in order to improve the sound quality of playback, DSP123 can also perform one or more of the following processes on the first audio signal: after active noise reduction ANC and balanced EQ, it is output to speaker 13; The two audio signals are output to the speaker 23 after one or more of the following processes: Active Noise Cancellation (ANC) and balanced EQ. The above-mentioned active noise reduction ANC and balanced EQ functions can be integrated in the DSP, and can also be realized by a separate codec. For example, a codec can be coupled between the DSP and the speaker. As shown in Figure 5, the DSP123 and the speaker The codec 124 is coupled between 13, and the codec 224 is coupled between the DSP 223 and the speaker 23. The codec 124 and the codec 224 can adopt an active noise reduction ANC codec.

In addition, in some examples in the first scenario, usually DSP123 plays the first channel data according to the first clock signal generated by the crystal oscillator on SOC12 in earphone 1; and DSP223 plays the second clock signal generated by the crystal oscillator on SOC22 in earphone 2 The clock signal plays the second channel data; because the crystal oscillator in the earphone 1 and the clock signal provided by the crystal oscillator in the earphone 2 usually have a deviation of 20-80us, therefore, the generated first audio signal and the second audio signal also have 20 The deviation of -80us can be noticed by enthusiasts, resulting in a bad user experience. In order to realize the playback synchronization of earphone 1 and earphone 2, as shown in Fig. 6, SOC22 also includes: short-distance communication core 222; The second transmission line 32 can be a UART bus. The short-distance communication core 122 is also configured to send a first synchronization signal to the short-distance communication core 222 through the second transmission line 32, and send the first synchronization signal to the DSP123; it should be noted that the first synchronization signal can be SOC12 A clock signal provided by the crystal oscillator in the DSP123 is specifically configured to play the first channel data according to the first synchronization signal, and generates a first audio signal output to the speaker 13 of the earphone 1; DSP223 is specifically configured to play the second channel data according to the first synchronization signal, A second audio signal output to the speaker 23 of the earphone 2 is generated. In some examples, it should be noted that since the DSP123 is connected to the DSP223 through the first transmission line 31 , the first synchronization signal can also be obtained by the DSP123 from the crystal oscillator in the SOC12 and transmitted to the DSP223 through the first transmission line 31 . In some examples, the first synchronization signal may also be transmitted using an independent transmission line, for example, directly through a general purpose input output (GPIO) bus between ports provided by SOC1 and SOC2.

Based on the above-mentioned wireless headset, when the headset 1 is the left ear, it is usually worn on the left ear. If the mobile phone 200 is placed on the right side of the human body (for example, in the pocket on the right side), the radio frequency signal needs to pass through the human body and be received. The radio frequency antenna 11 receives, which will weaken the received signal of the radio frequency antenna 11, so that the radio frequency signal received by the radio frequency circuit 121 is relatively weak. Then in order to solve this problem, in some examples, as shown in Fig. 4 and Fig. 6, SOC22 also includes: radio frequency circuit 221 and short distance communication core 222; earphone 2 also includes radio frequency antenna 21; radio frequency circuit 221 is coupled with radio frequency antenna 21 The short-distance communication core 222 can be connected to the short-distance communication core 122 through the second transmission line 32, for example, the second transmission line 32 can be a UART bus. Specifically, the short-distance communication core 122 is further configured to determine a first signal quality parameter according to the first radio frequency signal; the radio frequency circuit 221 is configured to receive the second radio frequency signal sent by the terminal device from the radio frequency antenna 21, and transmit the second radio frequency signal The two radio frequency signals are sent to the short-distance communication core 222; wherein the first radio frequency signal and the second radio frequency signal may be received signals of the same radio frequency signal sent by the headset 1 and the headset 2 to the terminal device. The short-distance communication core 222 is configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the short-distance communication core 122 through the second transmission line 32; the short-distance communication core 122 is configured When it is determined according to the first signal quality parameter and the second signal quality parameter that the quality of the first radio frequency signal is better than that of the second radio frequency signal, it is determined to demodulate the first radio frequency signal into an audio coded data packet. Similarly, the short-distance communication core 122 can also transmit the first signal quality parameter to the short-distance communication core 222 through the second transmission line 32, and then the short-distance communication core 222 determines that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal , DSP223 will subsequently receive the second channel data sent by DSP123. In this way, when the short-distance communication core 122 demodulates the first radio frequency signal into an audio coded data packet in the above manner, the earphone 1 is the main earphone, and the earphone 2 is the secondary earphone; otherwise, if the short-distance communication core 222 determines that the second radio frequency If the quality of the signal is better than that of the first radio frequency signal, the short-distance communication core 222 demodulates the second radio frequency signal into an audio coded data packet, then the earphone 2 is the main earphone, and the earphone 1 is the auxiliary earphone. Of course, when the earphone 2 is the main ear, the short-distance communication core 122 or DSP223 of the SOC 22 can also obtain the clock signal of the crystal oscillator in the SOC 22 as the synchronization signal for the earphone 1 and the earphone 2 to play their respective channel data. In addition, the above-mentioned first signal quality parameter or second signal quality parameter includes one or more of RSRP, RSRQ, RSSI, PER, and SINR.

In addition, it should be noted that the earphone 1 and/or the earphone 2 may also include a microphone and a sensor connected to the SOC; the specific sensor may be a proximity sensor, a touch sensor, and the like. Wherein the microphone and the sensor can be connected with the DSP in the earphone 1 and/or the earphone 2 .

In the second application scenario, as shown in FIG. 7, the system chip SOC12 includes: a radio frequency circuit 121, a short-distance communication core 122, and a digital signal processor DSP123; SOC22 includes: a short-distance communication core 222 and a DSP223; wherein the short-distance The communication core 222 may be connected to the short-distance communication core 122 through a first transmission line 31, for example, the first transmission line 31 may be a UART bus.

The radio frequency circuit 121 is configured to receive the first radio frequency signal from the radio frequency antenna 11, and send the first radio frequency signal to the short-distance communication core 122; the short-distance communication core 122 is configured to demodulate the first radio frequency signal into an audio code data packet, and the audio coding data packet is sent to DSP123, and the audio coding data packet is sent to the short-distance communication core 222 through the first transmission line 31; the short-distance communication core 222 is configured to send the audio coding data packet to DSP223; DSP123, configured to decode the first sound channel data in the audio encoding data packet; DSP223, configured to decode the second sound channel data in the audio encoding data packet.

Among them, the short-distance communication core may include but not limited to Bluetooth chip, green tooth chip, ZigBee chip, NFC chip or other chips for short-distance wireless communication derived in the future. The type is not limited, and the following embodiments are described by taking the short-range wireless communication chip as a bluetooth chip as an example.

Specifically, as shown in FIG. 4 and FIG. 7, after the mobile phone 200 sends the first radio frequency signal carrying audio data to the radio frequency antenna 11, the radio frequency circuit 121 is mainly used to receive the first radio frequency signal from the radio frequency antenna 11; then, the Bluetooth The chip 122 demodulates the first radio frequency signal into an audio coded data packet (such as a base transport header (BTH packet) of subband coding or advanced audio coding (subband coding/advanced audio coding, SBC/AAC); after that , the Bluetooth chip 122 sends the audio coded data packet to the Bluetooth chip 222 through the first transmission line 31; afterward, the DSP 123 performs SBC/AAC decoding on the audio coded data packet to generate pulse code modulation (pulse code modulation, PCM ) code stream, the PCM code stream contains the first sound channel data; DSP223 carries out SBC/AAC decoding to the audio coded data packet, generates pulse code modulation (pulse code modulation, PCM) code stream, and this PCM code stream contains the second sound channel channel data, wherein the first channel data and the second channel data are used to play in the speaker of the earphone 1 or the earphone 2 respectively.

For example, the first channel data is left channel data, then DSP123 plays the first channel data, outputs the first audio signal to the speaker 13 of earphone 1, and drives the speaker 13; then the second channel data is right channel data , the DSP 223 plays the second audio channel data, outputs the second audio signal to the speaker 23 of the earphone 2 , and drives the speaker 23 . It should be noted that the DSP123 can also perform one or more of the following processes on the first audio signal: after active noise reduction ANC and equalization EQ, it is output to the speaker 13; similarly, the DSP223 can also perform the following processes on the second audio signal One or more of them: after active noise reduction ANC and balanced EQ, output to speaker 23 . The above-mentioned active noise reduction ANC and balanced EQ functions can be integrated in the DSP, and can also be realized by a separate codec. For example, a codec can be coupled between the DSP and the speaker. As shown in Figure 7, the DSP123 and the speaker The codec 124 is coupled between 13, and the codec 224 is coupled between the DSP 223 and the speaker 23. The codec 124 and the codec 224 can adopt an active noise reduction ANC codec.

In addition, in some examples in the second scenario, in order to realize the playback synchronization of the earphone 1 and the earphone 2, the short-distance communication core 122 is also configured to send a first synchronization signal to the short-distance communication core 222 through the first transmission line 31, And send the first synchronization signal to DSP123; the short-distance communication core 222 is specifically configured to send the first synchronization signal to DSP223; it should be noted that the first synchronization signal can be a clock signal provided by the crystal oscillator in the SOC12 . DSP123 is specifically configured to play the first channel data according to the first synchronization signal, and generates a first audio signal output to the speaker 13 of the earphone 1; DSP223 is specifically configured to play the second channel data according to the first synchronization signal, A second audio signal output to the speaker 23 of the earphone 2 is generated. In some examples, the first synchronization signal may also be transmitted using an independent transmission line, for example, directly through a general purpose input output (GPIO) bus between ports provided by SOC1 and SOC2.

Based on the above-mentioned wireless headset, when the headset 1 is the left ear, it is usually worn on the left ear. If the mobile phone 200 is placed on the right side of the human body (for example, in the pocket on the right side), the radio frequency signal needs to pass through the human body and be received. The radio frequency antenna 11 receives, which will lead to the weakening of the radio frequency antenna 11, so that the radio frequency signal received by the radio frequency circuit 121 is relatively weak. To solve this problem, in some examples, as shown in FIG. 4 and FIG. 7 , the SOC 22 further includes: a radio frequency circuit 221 ; the earphone 2 further includes a radio frequency antenna 21 ; the radio frequency circuit 221 is coupled to the radio frequency antenna 21 .

Specifically, the short-distance communication core 122 is further configured to determine a first signal quality parameter according to the first radio frequency signal; the radio frequency circuit 221 is configured to receive the second radio frequency signal sent by the terminal device from the radio frequency antenna 21, and transmit the second radio frequency signal The two radio frequency signals are sent to the short-distance communication core 222; wherein the first radio frequency signal and the second radio frequency signal may be received signals of the same radio frequency signal sent by the headset 1 and the headset 2 to the terminal device. The short-distance communication core 222 is configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the short-distance communication core 122 through the first transmission line 31; the short-distance communication core 122 is configured When it is determined according to the first signal quality parameter and the second signal quality parameter that the quality of the first radio frequency signal is better than that of the second radio frequency signal, it is determined to demodulate the first radio frequency signal into an audio coded data packet. Similarly, the short-distance communication core 122 can also transmit the first signal quality parameter to the short-distance communication core 222 through the first transmission line 31, and then the short-distance communication core 222 determines that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal , DSP223 will subsequently receive the second channel data sent by DSP123. In this way, when the short-distance communication core 122 demodulates the first radio frequency signal into an audio coded data packet in the above manner, the earphone 1 is the main earphone, and the earphone 2 is the secondary earphone; otherwise, if the short-distance communication core 222 determines that the second radio frequency If the quality of the signal is better than that of the first radio frequency signal, the short-distance communication core 222 demodulates the second radio frequency signal into an audio coded data packet, then the earphone 2 is the main earphone, and the earphone 1 is the auxiliary earphone.

In the third application scenario, as shown in FIG. 8 , the system chip SOC12 includes: a radio frequency circuit 121, a short-distance communication core 122, and a digital signal processor DSP123; the SOC22 includes: a short-distance communication core 222 and a DSP223; wherein, the radio frequency circuit 221 is coupled with the radio frequency antenna 21 . The radio frequency circuit 121 may be connected to the short-distance communication core 222 through a first transmission line 31, for example, the first transmission line 31 may be a radio frequency coaxial line.

The radio frequency circuit 121 is configured to receive a first radio frequency signal from the radio frequency antenna 11, send the first radio frequency signal to the short-distance communication core 122, and send the first radio frequency signal from the first transmission line 31 to the short-distance communication core 222; The short-distance communication core 122 is configured to demodulate the first audio frequency data packet from the first radio frequency signal; the digital signal processor DSP123 is configured to decode the first audio channel data from the first audio coding data packet; the short-distance The communication core 222 is configured to demodulate the first radio frequency signal into a second audio coded data packet, and send the second audio coded data packet to the DSP223; the DSP223 is configured to decode the second audio coded data packet from the second audio coded data packet channel data.

In the following example, the short-distance communication core may include but not limited to Bluetooth chip, green tooth chip, ZigBee chip, NFC chip or other chips for short-distance wireless communication derived in the future. The specific type is not limited, and the following embodiments will be described by taking the short-range wireless communication chip as a Bluetooth chip as an example.

Specifically, as shown in FIG. 4 and FIG. 8, after the mobile phone 200 sends the first radio frequency signal carrying audio data to the radio frequency antenna 11, the radio frequency circuit 121 is mainly used to receive the first radio frequency signal from the radio frequency antenna 11; the radio frequency circuit 121 Send the first radio frequency signal to the Bluetooth chip 222 through the first transmission line 31 . Then, the bluetooth chip 122 demodulates the first radio frequency signal into a first audio coding data packet (such as the BTH packet of SBC/AAC); the bluetooth chip 222 demodulates the first radio frequency signal into a second audio coding data packet (such as SBC/AAC) AAC BTH packet); wherein, the first audio encoding data packet and the second audio data packet are used to play in the speaker of the earphone 1 or the earphone 2 respectively. Afterwards, DSP123 carries out SBC/AAC decoding to the first audio coding data packet, generates the first PCM code stream, and this first PCM code stream contains the first channel data; DSP223 carries out SBC/AAC decoding to the second audio coding data packet Decoding to generate a second PCM code stream, the second PCM code stream includes the second audio channel data.

For example, the first channel data is left channel data, then DSP123 plays the first channel data, outputs the first audio signal to the speaker 13 of earphone 1, and drives the speaker 13; then the second channel data is right channel data , the DSP 223 plays the second audio channel data, outputs the second audio signal to the speaker 23 of the earphone 2 , and drives the speaker 23 . It should be noted that the DSP123 can also perform one or more of the following processes on the first audio signal: after active noise reduction ANC and equalization EQ, it is output to the speaker 13; similarly, the DSP223 can also perform the following processes on the second audio signal One or more of them: after active noise reduction ANC and balanced EQ, output to speaker 23 . The above-mentioned active noise reduction ANC and balanced EQ functions can be integrated in the DSP, and can also be realized by a separate codec. For example, a codec can be coupled between the DSP and the speaker. As shown in Figure 8, the DSP123 and the speaker The codec 124 is coupled between 13, and the codec 224 is coupled between the DSP 223 and the speaker 23. The codec 124 and the codec 224 can adopt an active noise reduction ANC codec.

In addition, in some examples in the third scene, in order to realize the playback synchronization of the earphone 1 and the earphone 2, the short-distance communication core 122 and the short-distance communication core 222 are connected through the second transmission line 32; the second transmission line may be a UART bus; The short-distance communication core 122 is also configured to send a first synchronization signal to the short-distance communication core 222 through the second transmission line 32, and send the first synchronization signal to the DSP123; it should be noted that the first synchronization signal can be SOC12 A clock signal provided by the crystal oscillator in the DSP123 is specifically configured to play the first channel data according to the first synchronization signal, and generates a first audio signal output to the speaker 13 of the earphone 1; DSP223 is specifically configured to play the second channel data according to the first synchronization signal, A second audio signal output to the speaker 23 of the earphone 2 is generated. In some examples, the first synchronization signal can also be transmitted using an independent transmission line, for example, directly through the input and output port (general purpose input output, GPIO) bus transmission between the ports provided by SOC1 and SOC2, or set the transmission line between DSP123 and DSP223 (eg I2S bus) transmission.

Based on the above-mentioned wireless headset, when the headset 1 is the left ear, it is usually worn on the left ear. If the mobile phone 200 is placed on the right side of the human body (for example, in the pocket on the right side), the radio frequency signal needs to pass through the human body and be received. The radio frequency antenna 11 receives, which will lead to the weakening of the radio frequency antenna 11, so that the radio frequency signal received by the radio frequency circuit 121 is relatively weak. To solve this problem, in some examples, as shown in FIG. 4 and FIG. 8 , the SOC 22 further includes: a radio frequency circuit 221 ; the earphone 2 further includes a radio frequency antenna 21 ; the radio frequency circuit 221 is coupled to the radio frequency antenna 21 . The short-distance communication core 122 is connected to the short-distance communication core 222 through the second transmission line 32 . Specifically, the radio frequency circuit 221 is configured to receive the second radio frequency signal sent by the terminal device from the radio frequency antenna 21, and send the second radio frequency signal to the short-distance communication core 222; the short-distance communication core 122 is also configured to A radio frequency signal, determine the first signal quality parameter, and send the first signal quality parameter to the short-distance communication core 222 through the second transmission line 32; wherein the first radio frequency signal and the second radio frequency signal can be earphone 1 and earphone 2 for the terminal The received signal of the same radio frequency signal transmitted by the device. The short-distance communication core 222 is configured to determine a second signal quality parameter according to the second radio frequency signal; the short-distance communication core 222 is configured to send the second signal quality parameter to the short-distance communication core 122 through the second transmission line 32; The distance communication core 122 is configured to determine to demodulate the first radio frequency signal into the first audio code when it is determined according to the first signal quality parameter and the second signal quality parameter that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal. Data packets; the short-distance communication core 222 is configured to determine that the first radio frequency signal is demodulated to The second audio encoding data packet. Like this, then earphone 1 is main earphone, earphone 2 is secondary earphone; 122 demodulates the first audio coded data packet in the second radio frequency signal, and the short-distance communication core 222 demodulates the second audio coded data packet in the second radio frequency signal, then the earphone 2 is the main earphone, and the earphone 1 is the auxiliary earphone; In this scenario, a third transmission line 33 is connected between the short-distance communication core 122 and the radio frequency circuit 221, and the radio frequency circuit 221 can transmit the second radio frequency signal to the short-distance communication core 122 through the third transmission line 33. The transmission line 33 may be a coaxial radio frequency line.

In the fourth application scenario, as shown in FIG. 9 , the SOC 12 includes: a radio frequency circuit 121, a short-distance communication core 122, a digital signal processor (digital signal processor, DSP) 123, and a first codec 124; wherein, the radio frequency The circuit 121 is coupled to the radio frequency antenna 11; the SOC 22 includes: a codec 224; the DSP 123 and the codec 224 are connected through a first transmission line 31, and the first transmission line 31 may be an I2S bus. Wherein, the radio frequency circuit 121 is configured to receive the first radio frequency signal from the radio frequency antenna 11, and send the first radio frequency signal to the short-distance communication core 122; the short-distance communication core 122 is configured to demodulate the first radio frequency signal into audio encoding data packet, and send the audio encoding data packet to DSP123; DSP123 is configured to decode the first channel data and the second channel data in the audio encoding data packet; DSP123 is configured to decode the audio encoding data packet in the audio encoding data packet Decoding the first channel data and the second channel data; DSP123 is configured to play the first channel data, generate a first audio signal output to the speaker of the first earphone, and send the first audio signal to the codec 124 DSP123 is configured to play the second sound channel data, generates a second audio signal output to the speaker of the second earphone, and sends the second audio signal to the codec 224 through the first transmission line 31; the codec 124, It is configured to at least perform one or more of the following processes on the first audio signal: active noise reduction ANC and equalization EQ; the codec 224 is configured to at least perform one or more of the following processes on the second audio signal Multiple items: active noise reduction ANC and balanced EQ.

Specifically, as shown in FIG. 9, after the mobile phone 200 sends the first radio frequency signal carrying audio data to the radio frequency antenna 11, the radio frequency circuit 121 is mainly used to receive the first radio frequency signal from the radio frequency antenna 11; then, the Bluetooth chip 122 will The demodulation of the first radio frequency signal is an audio coded data packet (for example: base transport header (BTH packet) of subband coding or advanced audio coding (subband coding/advanced audio coding, SBC/AAC); after that, DSP123 SBC/AAC decoding is performed on the audio coded data packet to generate a pulse code modulation (pulse code modulation, PCM) code stream, the PCM code stream includes first channel data and second channel data, wherein the first channel data and The second channel data is respectively used to play in the loudspeaker of earphone 1 or earphone 2. For example, the first channel data is left channel data, then DSP123 plays this first channel data, generates the first audio data, the first After the audio data is processed by the codec 124, it is output to the speaker 13 of the earphone 1 to drive the speaker 13; then the second channel data is the right channel data, and the DSP 123 plays the second channel data to generate the second audio data , the second audio data is processed by the codec 224 and then output to the speaker 23 of the earphone 2 to drive the speaker 23 .

Based on the above-mentioned wireless headset, when the headset 1 is the left ear, it is usually worn on the left ear. If the mobile phone 200 is placed on the right side of the human body (for example, in the pocket on the right side), the radio frequency signal needs to pass through the human body and be received. The radio frequency antenna 11 receives, which will weaken the received signal of the radio frequency antenna 11, so that the radio frequency signal received by the radio frequency circuit 121 is relatively weak. Then in order to solve this problem, in some examples, as shown in FIG. 9 , SOC22 also includes: radio frequency circuit 221, short-distance communication core 222, DSP223; earphone 2 also includes radio frequency antenna 21; radio frequency circuit 221 is coupled with radio frequency antenna 21; The short-distance communication core 222 may be connected to the short-distance communication core 122 through a second transmission line 32, for example, the second transmission line 32 may be a UART bus. Specifically, the short-distance communication core 122 is further configured to determine a first signal quality parameter according to the first radio frequency signal; the radio frequency circuit 221 is configured to receive the second radio frequency signal sent by the terminal device from the radio frequency antenna 21, and transmit the second radio frequency signal The two radio frequency signals are sent to the short-distance communication core 222; wherein the first radio frequency signal and the second radio frequency signal may be received signals of the same radio frequency signal sent by the headset 1 and the headset 2 to the terminal device. The short-distance communication core 222 is configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the short-distance communication core 122 through the second transmission line 32; the short-distance communication core 122 is configured When it is determined according to the first signal quality parameter and the second signal quality parameter that the quality of the first radio frequency signal is better than that of the second radio frequency signal, it is determined to demodulate the first radio frequency signal into an audio coded data packet. Similarly, the short-distance communication core 122 can also transmit the first signal quality parameter to the short-distance communication core 222 through the second transmission line 32, and then the short-distance communication core 222 determines that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal , the codec 224 will subsequently receive the second audio data sent by the DSP 123 . In this way, when the short-distance communication core 122 demodulates the first radio frequency signal into an audio coded data packet in the above manner, the earphone 1 is the main earphone, and the earphone 2 is the secondary earphone; otherwise, if the short-distance communication core 222 determines that the second radio frequency If the quality of the signal is better than that of the first radio frequency signal, the short-distance communication core 222 demodulates the second radio frequency signal into an audio coded data packet, then the earphone 2 is the main earphone, and the earphone 1 is the auxiliary earphone. Similarly, the DSP223 is connected to the codec 124 through the third transmission line 33 (for example, it may be an I2S bus), and then the DSP223 decodes the audio coded data packet into two channels of channel data, and plays the audio channel data corresponding to the earphone 1. The data is sent to the codec 124 for processing through the third transmission line 33 .

The above content is only the specific implementation of the application, but the protection scope of the application is not limited thereto, and any changes or replacements within the technical scope disclosed in the application shall be covered within the protection scope of the application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (17)

1. A head-mounted wireless earphone, characterized in that the head-mounted wireless earphone includes a first earphone and a second earphone;

   The first earphone includes: a first system chip and a first radio frequency antenna, the first system chip is coupled to the first radio frequency antenna;

   The second earphone includes: a second system chip;

   A first transmission line is connected between the first system chip and the second system chip;

   The first system chip is configured to wirelessly communicate with a terminal device through the first radio frequency antenna, and receive a first radio frequency signal sent by the terminal device;

   The first system chip is configured to transmit the transmission signal generated according to the first radio frequency signal to the second system chip through the first transmission line.
2. The wireless headphone according to claim 1, characterized in that,

   The first system chip includes: a first radio frequency circuit, a first short-distance communication core, and a first digital signal processor; wherein, the first radio frequency circuit is coupled to the first radio frequency antenna;

   The second system chip includes: a second digital signal processor; wherein the first digital signal processor is connected to the second digital signal processor through the first transmission line;

   The first radio frequency circuit is configured to receive the first radio frequency signal from the first radio frequency antenna, and send the first radio frequency signal to the first short-distance communication core;

   The first short-range communication core is configured to demodulate the first radio frequency signal into an audio coded data packet, and send the audio coded data packet to the first digital signal processor;

   The first digital signal processor is configured to decode the first channel data and the second channel data in the audio encoding data packet, and transmit the second channel data to the The second digital signal processor.
3. The wireless headset according to claim 2, wherein:

   The second system chip further includes: a second short-distance communication core; the first short-distance communication core is connected to the second short-distance communication core through a second transmission line;

   The first short-distance communication core is further configured to send a first synchronization signal to the second short-distance communication core through the second transmission line, and send the first synchronization signal to the first digital signal processor;

   The first digital signal processor is specifically configured to play the first audio channel data according to the first synchronization signal, and generate a first audio signal output to a speaker of the first earphone;

   The second digital signal processor is specifically configured to play the second audio channel data according to the first synchronization signal, and generate a second audio signal output to a speaker of the second earphone.
4. The wireless headset according to claim 2, wherein:

   The second system chip also includes: a second radio frequency circuit and a second short-distance communication core; the second earphone also includes a second radio frequency antenna; the second radio frequency circuit is coupled to the second radio frequency antenna; the The first short-distance communication core is connected to the second short-distance communication core through a second transmission line;

   The first short-distance communication core is further configured to determine a first signal quality parameter according to the first radio frequency signal;

   The second radio frequency circuit is configured to receive a second radio frequency signal sent by the terminal device from the second radio frequency antenna, and send the second radio frequency signal to the second short-distance communication core;

   The second short-distance communication core is configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the first short-distance communication core through the second transmission line communication core;

   The first short-distance communication core is configured to, when determining that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal according to the first signal quality parameter and the second signal quality parameter, determine Demodulate the first radio frequency signal into an audio coded data packet.
5. The wireless headset according to claim 3 or 4, characterized in that,

   The second transmission line includes a UART bus.
6. The wireless headset according to any one of claims 1-4, wherein the first transmission line includes an integrated circuit built-in audio I2S bus.
7. The wireless headphone according to claim 1, characterized in that,

   The first system chip includes: a first radio frequency circuit, a first short-distance communication core, and a first digital signal processor;

   The second system chip includes: a second short-distance communication core and a second digital signal processor; the first short-distance communication core is connected to the second short-distance communication core through the first transmission line;

   The first radio frequency circuit is configured to receive the first radio frequency signal from the first radio frequency antenna, and send the first radio frequency signal to the first short-distance communication core;

   The first short-range communication core is configured to demodulate the first radio frequency signal into an audio coded data packet, and send the audio coded data packet to the first digital signal processor, and through the The first transmission line sends the audio coded data packet to the second short-distance communication core;

   The second short-range communication core is configured to send the audio encoding data packet to the second digital signal processor;

   The first digital signal processor is configured to decode first channel data in the audio encoding data packet;

   The second digital signal processor is configured to decode second channel data in the audio encoding data packet.
8. The wireless headset according to claim 7, wherein:

   The first short-distance communication core is further configured to send a first synchronization signal to the second short-distance communication core through the first transmission line, and send the first synchronization signal to the first digital signal processor;

   The second short-distance communication core is specifically configured to send the first synchronization signal to the second digital signal processor;

   The first digital signal processor is specifically configured to play the first audio channel data according to the first synchronization signal, and generate a first audio signal output to a speaker of the first earphone;

   The second digital signal processor is specifically configured to play the second audio channel data according to the first synchronization signal, and generate a second audio signal output to a speaker of the second earphone.
9. The wireless headset according to claim 7, wherein:

   The second system chip also includes: a second radio frequency circuit; the second earphone also includes a second radio frequency antenna; the second radio frequency circuit is coupled to the second radio frequency antenna;

   The first short-distance communication core is configured to determine a first signal quality parameter according to the first radio frequency signal;

   The second radio frequency circuit is configured to receive a second radio frequency signal sent by the terminal device from the second radio frequency antenna, and send the second radio frequency signal to the second short-distance communication core;

   The second short-distance communication core is configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the first short-distance communication core through the first transmission line communication core;

   The first short-distance communication core is configured to, when determining that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal according to the first signal quality parameter and the second signal quality parameter, determine Demodulate the first radio frequency signal into an audio coded data packet.
10. The wireless headset according to any one of claims 7-9, characterized in that,

    The first transmission line includes a UART bus.
11. The wireless headphone according to claim 1, characterized in that,

    The first system chip includes: a first radio frequency circuit, a first short-distance communication core, and a first digital signal processor; wherein, the first radio frequency circuit is coupled to the first radio frequency antenna;

    The second system chip includes: a second short-distance communication core and a second digital signal processor; the first radio frequency circuit is connected to the second short-distance communication core through the first transmission line;

    The first radio frequency circuit is configured to receive the first radio frequency signal from the first radio frequency antenna, send the first radio frequency signal to the first short-distance communication core, and transmit the first radio frequency signal to the first short-distance communication core. A radio frequency signal is sent from the first transmission line to the second short-distance communication core;

    The first short-range communication core is configured to demodulate the first radio frequency signal into a first audio encoding data packet, and send the first audio encoding data packet to the first digital signal processor;

    The first digital signal processor is configured to decode first channel data from the first audio encoding data packet;

    The second short-range communication core is configured to demodulate the first radio frequency signal into a second audio encoding data packet, and send the second audio encoding data packet to the second digital signal processor;

    The second digital signal processor is configured to decode the second audio channel data from the second audio encoding data packet.
12. The wireless headset according to claim 11, wherein:

    The second system chip also includes: a second radio frequency circuit; the second earphone also includes a second radio frequency antenna; the second radio frequency circuit is coupled to the second radio frequency antenna;

    The second radio frequency circuit is configured to receive a second radio frequency signal sent by the terminal device from the second radio frequency antenna, and send the second radio frequency signal to the second short-distance communication core;

    The first short-distance communication core is connected to the second short-distance communication core through a second transmission line;

    The first short-distance communication core is configured to determine a first signal quality parameter according to the first radio frequency signal, and send the first signal quality parameter to the second short-distance communication core through the second transmission line communication core;

    The second short-distance communication core is configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the first short-distance communication core through the second transmission line communication core;

    The first short-distance communication core is configured to, when determining that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal according to the first signal quality parameter and the second signal quality parameter, determine demodulating the first radio frequency signal into a first audio coded data packet;

    The second short-distance communication core is configured to, when it is determined according to the first signal quality parameter and the second signal quality parameter that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal, determine Demodulate the first radio frequency signal into a second audio coded data packet.
13. The wireless headset according to claim 11, wherein:

    The first short-distance communication core is connected to the second short-distance communication core through a second transmission line;

    The first short-distance communication core is further configured to send a first synchronization signal to the second short-distance communication core through the second transmission line, and send the first synchronization signal to the first digital signal processor;

    The second short-distance communication core is specifically configured to send the first synchronization signal to the second digital signal processor;

    The first digital signal processor is specifically configured to play the first audio channel data according to the first synchronization signal, and generate a first audio signal output to a speaker of the first earphone;

    The second digital signal processor is specifically configured to play the second audio channel data according to the first synchronization signal, and generate a second audio signal output to a speaker of the second earphone.
14. The wireless headset according to any one of claims 11-13, wherein the first transmission line includes a radio frequency coaxial line.
15. The wireless headset according to any one of claims 2-14, characterized in that,

    The first system chip also includes a first codec; the second system chip also includes a second codec;

    The first digital signal processor is configured to play the first channel data, generate a first audio signal output to the speaker of the first earphone, and send the first audio signal to the first audio signal. a codec;

    The first codec is configured to at least perform one or more of the following processes on the first audio signal: active noise reduction ANC and equalization EQ;

    The second digital signal processor is configured to play the second channel data, generate a second audio signal output to the speaker of the second earphone, and send the second audio signal to the first Two codecs;

    The second codec is configured to at least perform one or more of the following processing on the second audio signal: active noise reduction (ANC) and equalization EQ.
16. The wireless headphone according to claim 1, characterized in that,

    The first system chip includes: a first radio frequency circuit, a first short-distance communication core, a first digital signal processor, and a first codec; wherein, the first radio frequency circuit is coupled to the first radio frequency antenna;

    The second system chip includes: a second codec; the second codec is connected to the first digital signal processor through the first transmission line;

    The first radio frequency circuit is configured to receive the first radio frequency signal from the first radio frequency antenna, and send the first radio frequency signal to the first short-distance communication core;

    The first short-range communication core is configured to demodulate the first radio frequency signal into an audio coded data packet, and send the audio coded data packet to the first digital signal processor;

    The first digital signal processor is configured to decode the first channel data and the second channel data in the audio encoding data packet;

    The first digital signal processor is configured to play the first channel data, generate a first audio signal output to the speaker of the first earphone, and send the first audio signal to the first audio signal. a codec;

    The first digital signal processor is further configured to play the second channel data, generate a second audio signal output to the speaker of the second earphone, and pass the second audio signal through the first a transmission line is sent to the second codec;

    The first codec is configured to at least perform one or more of the following processes on the first audio signal: active noise reduction ANC and equalization EQ;

    The second codec is configured to at least perform one or more of the following processing on the second audio signal: active noise reduction (ANC) and equalization EQ.
17. The wireless headset of claim 16, wherein:

    The second system chip also includes: a second radio frequency circuit, a second short-distance communication core, and a second digital signal processor; the second earphone also includes a second radio frequency antenna; the second radio frequency circuit is coupled to the first Two radio frequency antennas; the first short-distance communication core is connected to the second short-distance communication core through a second transmission line;

    The first short-distance communication core is configured to determine a first signal quality parameter according to the first radio frequency signal;

    The second radio frequency circuit is configured to receive a second radio frequency signal sent by the terminal device from the second radio frequency antenna, and send the second radio frequency signal to the second short-distance communication core;

    The second short-distance communication core is configured to determine a second signal quality parameter according to the second radio frequency signal, and send the second signal quality parameter to the first short-distance communication core through the second transmission line communication core;

    The first short-distance communication core is configured to, when determining that the quality of the first radio frequency signal is better than the quality of the second radio frequency signal according to the first signal quality parameter and the second signal quality parameter, determine Demodulate the first radio frequency signal into an audio coded data packet.

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