CN110351696B - The communication means of wireless headset and wireless headset - Google Patents
The communication means of wireless headset and wireless headset Download PDFInfo
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- CN110351696B CN110351696B CN201910834578.XA CN201910834578A CN110351696B CN 110351696 B CN110351696 B CN 110351696B CN 201910834578 A CN201910834578 A CN 201910834578A CN 110351696 B CN110351696 B CN 110351696B
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- earphone
- wireless link
- audio data
- another equipment
- frequency range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
- H04B2001/7152—Interference-related aspects with means for suppressing interference
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Telephone Function (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This disclosure relates to the communication means of a kind of wireless headset and wireless headset.Wireless headset includes two earphones, and the first earphone, which is configured that, establishes the first wireless link with another equipment, and transmits its relevant communication parameter so that the second earphone listens to the first wireless link using relevant communication parameter；It obtains the channel condition information of the first wireless link and determines next frequency range for the first wireless link based on channel condition information, or obtain the next frequency range for being used for the first wireless link from another equipment；Audio data is received from another equipment using next frequency range via the first wireless link；And use next frequency range of the first wireless link as next frequency range via the second wireless link, to the relevant information of the second earphone transmission audio data.In this way, the frequency hopping that the information transmission between two earphones can follow the information of the first earphone and another equipment room to transmit, reduces the self maintained work of each earphone tone hopping information, reduces the occupancy to other channels, reduce the interference to other equipment.
Description
Technical field
This disclosure relates to the communication means of earphone and wireless headset, more particularly, to wireless headset and wireless ear
The communication means of machine.
Background technique
With the raising of social progress and living standards of the people, earphone has become the essential daily necessity of people.It passes
Wired earphone unite by conducting wire connection smart machine (such as smart phone, laptop, tablet computer etc.), this will limit pendant
The action of wearer is especially inconvenient in sports ground conjunction.Meanwhile it the winding of earphone cable and pullling and stethoscope effect all shadows
Ring user experience.Common bluetooth headset eliminates the line between earphone and smart machine, but there are still connect between the ear of left and right
Line.
True wireless stereo headset comes into being.The communication mode of current true wireless headset is: by smart machine and very
Main earphone in wireless headset establishes linking bluetooth, first leads to data such as music, voice or other data groupings etc. with bluetooth
Letter mode is transferred to main earphone, is then given the data forwarding received from earphone by main earphone.Such wireless headset and logical
In letter method, main earphone needs and communication equipment and transmits data respectively from earphone, and the data volume of transmission is big, Bluetooth transmission can
It is low by property, and the power consumption of main earphone is big, the cruise duration of wireless headset is short.
Various wireless communications modes including bluetooth typically operate in certain common frequency ranges, because of these common frequency ranges
It is more crowded, it will cause conflicting with each other for frequency, thus it is larger to Communication Jamming, influence the stability and quality of communication.With indigo plant
For tooth, 2.4-2.48 GHz ISM band is worked in, since the frequency range frequency spectrum is extremely crowded, for example (,) it is WIFI 11b/g, micro-
Wave furnace, wireless phone etc. can all use the frequency range.In order to avoid conflicting with each other for frequency, can be arranged using frequency hopping etc. is anti-interference
It applies.However, the tone hopping information between the tone hopping information and principal and subordinate's earphone between main earphone and smart machine is mutually indepedent at present
, it needs to safeguard update respectively, increases the complexity of ears wireless headset communication, reduce message transmission rate, occupy letter
Road is more, also more to the interference of other equipment.
Summary of the invention
The disclosure is provided to solve the above-mentioned problems in the prior art.
The communication means for needing a kind of wireless headset and wireless headset, can reduce the first earphone and the second earphone to jump
The maintenance load of frequency information simplifies communication process, reduces the occupancy to other channels, decreases the interference to other equipment.
According to the first scheme of the disclosure, a kind of wireless headset, including two earphones are provided, in described two earphones
First earphone is configured as: being established the first wireless link with another equipment, and is transmitted the related communication of first wireless link
Parameter listens to first wireless link using the relevant communication parameter so as to the second earphone.First earphone also configures
Are as follows: it obtains the channel condition information of first wireless link and is determined based on acquired channel condition information for described
Next frequency range of first wireless link, or the next frequency range for being used for first wireless link is obtained from another equipment；
Via first wireless link, frequency hopping is realized using next frequency range, receives audio data from another equipment；With
And via the second wireless link, next frequency range of first wireless link is used to realize frequency hopping as next frequency range, come
To the relevant information of the second earphone transmission audio data；Second earphone is additionally configured to: via the second wireless link, being made
It uses next frequency range of first wireless link to realize frequency hopping as next frequency range, receives audio from first earphone
The relevant information of data.
According to the alternative plan of the disclosure, a kind of communication means of wireless headset is provided, the wireless headset includes two
A earphone, the first earphone in described two earphones are configured as: establishing the first wireless link with another equipment, and described in transmitting
The relevant communication parameter of first wireless link listens to first nothing using the relevant communication parameter so as to second earphone
Line link.The communication means includes: to obtain the channel condition information and base of first wireless link by first earphone
Next frequency range for first wireless link is determined in acquired channel condition information, or from another equipment
Obtain the next frequency range for being used for first wireless link；By first earphone, institute is used via first wireless link
It states next frequency range and realizes frequency hopping, receive audio data from another equipment；By first earphone, via the second radio chains
It connects and next frequency range of first wireless link is used to realize frequency hopping as next frequency range, to described in second earphone transmission
The relevant information of audio data.
Using according to the wireless headset of each embodiment of the disclosure and the communication means of wireless headset so that the first earphone with
Second wireless link of the information transmission between the second earphone can follow the information between the first earphone and another equipment to transmit
The first wireless link frequency hopping strategies, reduce the work load of the first earphone and the second earphone self maintained tone hopping information,
Reduce the occupancy to other channels, reduces the interference to other equipment.
Detailed description of the invention
In the attached drawing being not drawn necessarily to scale, identical appended drawing reference can describe similar in different views
Component.Same reference numerals with letter suffix or different letter suffix can indicate the different instances of similar component.Attached drawing
Generally through citing rather than the mode of limitation shows various embodiments, and reinstates with specification and claims one
It is illustrated in the disclosed embodiments.In due course, make to be referred to identical reference in all the appended drawings same
One or similar part.Such embodiment is illustrative, and is not intended as the exhaustive or exclusive of the present apparatus or method
Embodiment.
Fig. 1 shows the configuration schematic diagram of the wireless headset according to the embodiment of the present disclosure, the wireless headset and another equipment
It is communicated；
Fig. 2 shows the configuration schematic diagram according to the wireless headset of the embodiment of the present disclosure, the wireless headset and another equipment
It is communicated, and from the first earphone to the second earphone transmission error correcting code packet；
Fig. 3 shows in two earphones according to the wireless headset of the embodiment of the present disclosure each synchronous method with another equipment
Flow chart；
Fig. 4 shows the flow chart of the communication means of the wireless headset according to the embodiment of the present disclosure；
Fig. 5 shows the sub-process of the communication means executed by the second earphone in wireless headset according to the embodiment of the present disclosure
Diagram；
Fig. 6 shows the sub-process of the communication means executed by the second earphone in wireless headset according to the embodiment of the present disclosure
Diagram；
Fig. 7 shows the timing diagram of the method communicated according to the wireless headset of the embodiment of the present disclosure with another equipment；
Fig. 8 (a) shows the structure chart of the bluetooth physical frame of the basic rate mode according to the embodiment of the present disclosure；
Fig. 8 (b) shows the structure chart of the bluetooth physical frame of the enhancing rate mode according to the embodiment of the present disclosure；
Fig. 8 (c) shows the exemplary structure of improvement of the bluetooth physical frame of the enhancing rate mode according to the embodiment of the present disclosure
Figure.
Specific embodiment
To make those skilled in the art better understand the technical solution of the disclosure, with reference to the accompanying drawing and specific embodiment party
Formula elaborates to the disclosure.Embodiment of the disclosure work is further retouched in detail in the following with reference to the drawings and specific embodiments
It states, but not as the restriction to the disclosure.Each step described herein, if each other without it is contextual must
The property wanted then is not construed as limiting herein as the order that example is described, and those skilled in the art should be recognized that can be with
Sequence adjustment is carried out to it, as long as the logicality between not destroying it causes whole flow process cannot achieve.
Fig. 1 shows the configuration schematic diagram of the wireless headset 102 and 103 according to the embodiment of the present disclosure.The wireless headset includes
Two earphones 102 and 103, the first earphone 102 therein are configured as: the first wireless link 104 is established with another equipment 101,
And the relevant communication parameter of 105 first wireless links 104 is transmitted so that the second earphone 103 utilizes the relevant communication parameter
Listen to first wireless link.In the case where first wireless link 104 is linking bluetooth, which can
To include that the Bluetooth address of another equipment 101, the encryption parameter information of the linking bluetooth, tone hopping information (can be the bluetooth chain
The channel condition information of each channel connect is also possible to be applied under Bluetooth communication using various hop algorithms are obtained
One frequency range etc.), microgrid clock etc. so that the second earphone 103 is not necessarily to execute the pairing and foundation of linking bluetooth, and can be with
First earphone 102 that disguises oneself as listens to and receives the bluetooth sent by another equipment 101 via first Radio Link 104
Signal.As shown in Figure 1, the relevant information of relevant communication parameter and audio data can use transmission path 105 independent of each other
It is transmitted with 106, relevant communication parameter can be transmitted directly to the second earphone 103, and can also be transferred to via relay
Two earphones 103 can use communication pattern (such as bluetooth) identical with transmissions links 106, can also use and transmissions links
106 different communication patterns, such as, but not limited to WIFI, radio frequency, wire transmission etc..As shown in Figure 1, the disclosure compare it is existing
Technology improves the frequency hopping operation of the first wireless link 104 and the second wireless link 106, before the latter is followed
The frequency hopping strategies of person.
It is below linking bluetooth as an example, to the first earphone with the first wireless link 104 and the second wireless link 106
102 and second the frequency hopping operation of earphone 103 be illustrated, it will be understood that following frequency hopping operation is by slightly adjusting and can also fit
For other wireless links.
First earphone 102 is configurable to: being obtained the channel condition information of first wireless link 104 and is based on
Acquired channel condition information determines next frequency range for first wireless link 104, or another sets from described
Standby 101 obtain the next frequency range for being used for first wireless link 104.Then, first earphone 102 can be next according to this
Frequency range executes frequency hopping, that is, can jump to the communication that next frequency range executes first wireless link 104, with from described
Another equipment 101 receives audio data.First earphone 102 is also configured as: via the second wireless link 106, using described
Next frequency range of first wireless link 104 realizes frequency hopping as next frequency range, to transmission described in second earphone 103
The relevant information of (received from another equipment 101) audio data.In some embodiments, the correlation of the audio data
Information may include at least one of the group being made of following information: instruction packet, the instruction packet show first earphone 102
To the reception situation of the packets of audio data from another equipment 101；Error correcting code packet (also referred to as ECC packet), the ECC packet include
It carries out not including audio data and encoding resulting error correcting code by the audio data for receiving the first earphone 102；And by
Packets of audio data of first earphone 102 received from another equipment 101.
Wherein, correspondingly, second earphone 103 is additionally configured to: via the second wireless link 106, using described first
Next frequency range of wireless link 104 realizes frequency hopping as next frequency range, to receive the audio from first earphone 102
The relevant information of data.That is, the second wireless link 106 between the first earphone 102 and the second earphone 103 follows institute
The frequency hopping strategies (information) of the first wireless link 104 between the first earphone 102 and another equipment 101 are stated, such as are followed identical
Channel condition information (the first wireless link 104 between namely described first earphone 102 and another equipment 101 it is each
The channel condition information of channel) and common hop algorithm is used, or identical next frequency range is directly continued to use, so that the second nothing
Next frequency range that wired link 106 jumps to is identical as next frequency range that the first Radio Link 104 jumps to, without independently tieing up
Protect the tone hopping information of itself.In this way, reducing the information processing load of 102/ second earphone 103 of the first earphone, communication is simplified
Processing, so that next frequency range that two Radio Link frequency hoppings use is identical, reduces the occupancy to other channels, decreases pair
The interference of other equipment.
In some embodiments, the first earphone 102 and/or another equipment 101 are configurable to the between detection
The condition information of each channel of one wireless link 104, it is noted that herein, each channel of " the first wireless link 104 " is simultaneously
It is not necessarily used for the communication of the first wireless link 104, but, each channel can be used for the first radio chains if good and available
Connect 104 communication；First wireless link 104 can select channel to carry out practical communication in each channel.In some embodiments
In, the condition information of the channel between being detected by the side in the first earphone 102 and another equipment 101, another party
The condition information of channel between can voluntarily detecting, between other side transmission other side can also be requested to detect
The condition information of channel.That is, can voluntarily measure first wireless link 104 for the first earphone 102
Channel condition information, the channel condition information of first wireless link 104 can also be received from another equipment 101.
In some embodiments, the first earphone 102 can use first wireless link 104 with another equipment 101
The condition information of the shared channel between the two that wherein a side detects, the first earphone 102 and another equipment 101 can be each
Next available frequency band is determined using same hop algorithm from based on the condition information of channel between the two.Second earphone 103
The situation of the channel between the first earphone 102 and another equipment 101 can be obtained via first wireless link 104 is listened to
Information.In some embodiments, in the case where in the tone hopping information of the relevant communication parameter comprising the channel condition information,
Second earphone 103 can also obtain channel condition information from the relevant communication parameter.Based on acquired channel shape
Condition information, the second earphone 103 can use the hop algorithm shared with first wireless link 104, to determine next frequency range.
It in some embodiments, can be by the side in the first earphone 102 and another equipment 101 based on letter between the two
The condition information in road determines next available frequency band using hop algorithm, and is transferred to separately via first wireless link 104
One side.In this way, the second earphone 103 can be directly acquired via first wireless link 104 is listened to for first nothing
Next frequency range of line link 104, without voluntarily being calculated using hop algorithm, to reduce calculated load.In some realities
The case where applying in example, including next frequency range for the first wireless link 104 in the tone hopping information of the relevant communication parameter
Under, the second earphone 103 can also be obtained directly from the relevant communication parameter for the next of first wireless link 104
Frequency range.
In some embodiments, the communication pattern of each Radio Link can selected from by classical bluetooth, low-power consumption bluetooth,
Any one of the group that low-power consumption bluetooth audio is constituted.Low-power consumption bluetooth audio and low-power consumption bluetooth are communication different from each other
Mode.Low-power consumption bluetooth audio is the improvement to low-power consumption bluetooth, supports to synchronize spy in the case where low-power consumption bluetooth communication
Sign can upload transfer audio in the synchronizing channel of low-power consumption bluetooth；And common low-power consumption bluetooth audio communication mode can not
Realize these functions.
Below by taking Bluetooth communication as an example, to the first wireless link 104 between the first earphone 102 and another equipment 101
Frequency hopping operation is described in detail, wherein as an example, another equipment 101 can be various Portable intelligent terminals, including but
It is not limited to mobile phone, tablet computer, wearable smart machine etc..As an example, another equipment 101 can be used as main equipment,
And first earphone 102 can be used as from equipment, but it should be clear that it is also feasible that the master-slave role of the two, which reverses,.
It is possible, firstly, to information exchange is carried out between another equipment 101 and the first earphone 102 according to LMP Link Manager Protocol,
The mode of information exchange includes but is not limited to Bluetooth broadcast, WIFI etc., can inquire that the first earphone 102 returns by another equipment 101
Answer (another equipment 101 that default initiates inquiry supports frequency-hopping mode), can also question and answer etc. each other by both party, to determine that both sides are
It is no to support frequency-hopping mode.Meet the minimum channel number that can be used in the information of the format of LMP Link Manager Protocol comprising both sides.
It then, can be according to packet loss late (in conjunction with threshold value), the cyclic redundancy check of payload, head error checking, preceding
To the error parameter etc. of error checking and correction, each channel that both sides can be used is assessed.Can according to assessment result according to
The format of LMP Link Manager Protocol forms classification chart, which is also referred to as frequency hopping table (channel map), can indicate each letter
Road has been channel or bad channel, is occupied channel or idle channel.For example, can be indicated for 79 bluetooth channels
Whether each channel is available (good and unappropriated channel), such as can be indicated with 79 bits, and each bit indicates corresponding
The available mode of channel, a certain bit indicate that the channel is available for 1, indicate that the channel is unavailable for 0.
Later, the next frequency range jumped to can be determined using hop algorithm according to the frequency hopping table.In some embodiments
In, channel estimating, frequency hopping table are formed and next frequency range determination can be respectively independent by another equipment 101 and the first earphone 102
It carries out, can also partially be shared by the Fang Jinhang in another equipment 101 and the first earphone 102 with another party.For example, another
Equipment 101 can require the first earphone 102 to send channel assessment result (namely carrying out channel estimating by the first earphone 102),
And frequency hopping table is voluntarily formed, then the next frequency jumped to is determined using shared hop algorithm based on the frequency hopping table voluntarily formed
Section.For another example another equipment 101 may also require that the first earphone 102 sends frequency hopping table and (namely carried out by the first earphone 102
Frequency hopping table is formed), the next frequency range jumped to is voluntarily then determined using shared hop algorithm based on received frequency hopping table,
Etc..
In some embodiments, Bluetooth communication can also use multiple from equipment other than the first earphone 102, another
Any of equipment 101 and the first earphone 102 obtain channel assessment result, frequency hopping table and next frequency range to be jumped to it
It afterwards, can be by notifying other all members according to the order of the format of LMP Link Manager Protocol, so that other members can also be with
The tone hopping information between another equipment 101 and the first earphone 102 is followed, to reduce the work of self maintained tone hopping information maintenance
Amount, and significantly simplify the control of one-to-many Bluetooth communication.
In some embodiments, channel assessment result, frequency hopping table and next frequency range are periodically updated, to examine
Consider the bursty interference in environment and change and newest next frequency range more timely adapts to it, to ensure frequency hopping
The anti-jamming effectiveness of operation.
Fig. 2 shows the configuration schematic diagrams according to the wireless headset 202 and 203 of the embodiment of the present disclosure.Wherein, the first earphone
202, the second earphone 203, another equipment 201, the first wireless link 204, the second wireless link 206 are similar to first in Fig. 1
Earphone 102, the second earphone 103, another equipment 101, the first wireless link 104, the second wireless link 106, this will not be repeated here.Such as
Shown in Fig. 2, the first earphone 202, which is configured that, transmits 205 relevant communication parameters to the second earphone 203 via relay 207.It should
Relay 207 can be any one of charging box, another equipment 201, wire circuit etc. or combinations thereof.
As shown in Fig. 2, by another equipment 201, the including but not limited to smart machine of cellular phone, wearable device etc.,
Audio data is sent to the first earphone 202, the second earphone 203 then receives the audio data by listening to.In the first earphone
In the case that 202 receive correct audio data, using ECC(error correcting code) encoder encodes it, coding result
The 206 ECC packets, ECC packet non-audio number including ECC code are transmitted including audio data and ECC code, and to the second earphone 203
According to.It may be to have mistake that second earphone 203, which listens to obtained audio data from another equipment 201, can use from
The received ECC code of first earphone 202 carries out error correction to wrong audio data via ECC decoder, to obtain correct sound
Frequency evidence.It in some embodiments, can be to another in the case where the first earphone 202 is not received by correct audio data
One equipment 201 sends NACK packet.
By being listened to by the second earphone 203 to first Radio Link 204, without repeating the first Radio Link
204 establishment process is forwarded to second from the received all audio datas of another equipment 201 without by the first earphone 202 again
Earphone 203 can more efficiently realize the information transmission between another equipment 201 and two earphones 202 and 203, and can subtract
The time difference of information received by few first earphone 202 and the second earphone 203, and then improve its synchronism.Further, pass through
ECC code and non-audio data are transmitted from the first earphone 202 to the second earphone 203, can substantially reduced between two earphones
Ensure that it obtains correct audio data while volume of transmitted data, to further increase the reliability of Bluetooth data transfer.
In some embodiments, ECC code can also be sent to the first earphone 202 from the second earphone 203, and correspondingly, ECC is compiled
The position of code device and ECC decoder can be interchanged, and, the first earphone 202 and the second earphone 203 are to another equipment 201(
Such as smart phone) send ACK/NACK packet effect on can be interchanged.
ECC packet in Fig. 2 is only the relevant information for the audio data that the first earphone 202 is transmitted to the second earphone 203
A kind of example, can also transmit instruction packet, which may indicate that the first earphone 202 to the audio from another equipment 201
The reception situation of data packet, such as have correctly received packets of audio data, be not properly received packets of audio data or without just
It really receives packets of audio data but has carried out compensating or being not properly received audio number using bag-losing hide (PLC) technology
Correction etc. is completed according to packet but using ECC code.
When the first earphone 202 receives the Bluetooth audio frequency data packet or have correctly received bluetooth sound that another equipment 201 is sent
When frequency data packet, then an instruction packet is sent to the second earphone 203；The transmission of the instruction packet, follow the first earphone 202 with it is another
Tone hopping information between equipment 201 is received used in the packets of audio data from another equipment 201 using the first earphone 202
Channel.Second earphone 203 can also be obtained by monitoring the first wireless link 204 between the first earphone 202 and another equipment 201
To the tone hopping information of the first wireless link 204.Alternatively, can also be by the direct or indirect mode of the first earphone 202 to
Two earphones 203 send tone hopping information.Here tone hopping information may include that can calculate to jump to using hop algorithm based on it
Next frequency range channel condition information or frequency hopping table, also may include hop algorithm (the case where hop algorithm is preset
Under then without include hop algorithm), can also directly be the next frequency range to be jumped to.It is had correctly received in the second earphone 203
Audio data and receive instruction packet show that the first earphone 202 also has correctly received audio data in the case where, then may be used
To send an ACK packet to another equipment 201.And it is not properly received audio data in the second earphone 203, or do not receive
It is wrapped to instruction, or in the case that the instruction packet that receives shows that the first earphone 202 does not have correctly received audio data, then it is then
A NACK packet can be sent to another equipment 201.
It in another embodiment, then then can be in the case where the first earphone 202 does not have correctly received audio data
Another equipment 201 sends a NACK packet.It has correctly received audio data in the second earphone 203 and receives instruction packet and show
In the case that first earphone 202 also has correctly received audio data, then an ACK packet can be sent to another equipment 201；
It is not properly received audio data in the second earphone 203 but receives instruction packet and show that the first earphone 202 has correctly received sound
Frequency is in the case where, then it then can send a NACK packet to another equipment 201.
In above each embodiment, instruction packet all issues the second earphone 203 by the first earphone 202.This is merely exemplary,
In some embodiments, instruction packet can issue the first earphone 202 by the second earphone 203, at this point, about to another equipment 201
In the effect for sending ACK/NACK, the first earphone 202 also can be interchanged with the second earphone 203.Particularly, in two earphones which
A is the first earphone 202(with making main earphone) which is that the second earphone 203(is used as from earphone) can be dynamically selected, example
Such as, can the better earphone of communication conditions using in two earphones of dynamic select between another equipment 201 as the first ear
Machine 202(is with making main earphone), so that the information transfer efficiency and transmission that improve between another equipment 201 and bi-telephone are stablized
Property.As an example, communication conditions can include but is not limited to the intensity that corresponding earphone receives the signal from another equipment 201
(RSSI), corresponding earphone receive any one of the signal-to-noise ratio of the signal from another equipment 201, packet loss late (PLR) or
It is several.
In some embodiments, another equipment 201 receives NACK Bao Houhui retransmitted audio data packet, until sending times
Reach a certain predetermined value.As an example, the first earphone 202 and/or the second earphone 203 are also configured as: in same audio number
After retransmitting M time according to coating, send confirmation response (ACK) packet to another equipment 201, M be 1 to 5 in the range of it is any certainly
So number.The packets of audio data that can be not properly received using technological means come completion or correction (such as being corrected using ECC code),
So that it is guaranteed that same packets of audio data is retransmitted M times then can correctly be obtained by both the first earphone 202 and the second earphone 203.
In some embodiments, first earphone 202 and/or the second earphone 203 are also configured as: being utilized bag-losing hide (PLC)
Technology compensates the packets of audio data not obtained correctly.In this way, limiting another equipment 201 to same packets of audio data
Number of retransmissions, reduce the time delay of audio transmission, cooperate various compensation or correction means, taken into account the accurate of audio transmission
Property.
Fig. 3 shows in two earphones according to the wireless headset of the embodiment of the present disclosure each synchronous method with another equipment
300 flow chart.It, can be with as shown in figure 3, each earphone in ears wireless headset, that is, the first earphone or the second earphone
The radiofrequency signal from another equipment (not shown) is received using radio-frequency front-end 301,302 pairs of institutes are received using analog-digital converter
Radiofrequency signal is sampled to obtain digital signal, and synchronous and demodulation module 303 is recycled to be handled to obtain Timing Synchronization
Error 304 and carrier synchronization error 305.One of both timing synchronization errors 304 and carrier synchronization error 305 or both can be with
It is fed to phaselocked loop 306, to go to adjust the crystal oscillation frequency of the Bluetooth chip of corresponding earphone using phaselocked loop 306, so that
The earphone can be the same as frequency in clock frequency with another equipment.The radio-frequency carrier fed by phaselocked loop 306 can be fed to radio frequency
Front end 301, and frequency reducing is carried out via frequency divider 307 to obtain the modulus sampling clock for analog-digital converter 302.
Also, time synchronization signals are synchronized with the starting point of the time slot of the bluetooth transmission signal of another equipment, in this way
Each earphone is achieved that synchronous with the clock of another equipment.First earphone and the second earphone are all synchronous with another equipment clock,
It can guarantee that the music signal that two earphones are played is synchronous, so as to improve sound quality (such as, but not limited to stereophonic effect).Tool
Body is got on very well, and the clock that the first earphone receives the Bluetooth signal from another equipment is properly termed as main earphone bluetooth clock, the second ear
The clock that machine receives the Bluetooth signal from another equipment is properly termed as from earphone bluetooth clock, and two bluetooth clocks can be together
Step.Further, the bluetooth clock that the first earphone receives the Bluetooth signal from another equipment sends bluetooth with another equipment
The bluetooth clock of signal can be it is synchronous, and the second earphone receive the Bluetooth signal from another equipment bluetooth clock with
The bluetooth clock that another equipment sends Bluetooth signal can be synchronous.In this way, when the synchronous combination of master-salve clock transmits and receives
The synchronization of clock can improve the synchronism of Bluetooth signal, reduce propagation delay time, improve the presentation effect of Bluetooth signal in bi-telephone
Fruit (such as, but not limited to stereophonic effect).
Fig. 4 shows the diagram of the process 400 of the communication means of the wireless headset according to the embodiment of the present disclosure, the wireless ear
Machine includes two earphones, and the first earphone in described two earphones is configured as: the first wireless link is established with another equipment, and
The relevant communication parameter of first wireless link is transmitted to detect so that second earphone can use the relevant communication parameter
Listen first wireless link.The process 400 starts from step 401, by first earphone, obtains first wireless link
Channel condition information simultaneously determines next frequency range for first wireless link based on acquired channel condition information, or
Person obtains the next frequency range for being used for first wireless link from another equipment.Then, in step 402, by described first
Earphone receives audio data from another equipment using next frequency range via first wireless link.Then, in step
Rapid 403, use next frequency range of first wireless link as next frequency via the second wireless link by first earphone
Section, the relevant information of audio data described in the second earphone transmission of Xiang Suoshu.In this way, between the first earphone and the second earphone
Two wireless links can follow the tone hopping information of the first wireless link between the first earphone and another equipment, such as follow identical
The channel condition information (channel of each channel of the first wireless link between namely described first earphone and another equipment
Condition information) and common hop algorithm is used, or identical next frequency range is directly continued to use, so that the second Radio Link jumps
To next frequency range it is identical as next frequency range that the first Radio Link jumps to, without independently safeguard itself frequency hopping believe
Breath.In this way, reducing the first earphone/second earphone information processing load, communication process is simplified, so that two Radio Links
The frequency range used is identical, reduces the occupancy to other channels, decreases the interference to other equipment.
First earphone can be adopted in various manners come the channel condition information for obtaining first wireless link, including but not
It is limited to voluntarily to measure the channel condition information of first wireless link, or receives described first wirelessly from another equipment
The channel condition information of link.
As shown in figure 5, the process 400 executed with the first earphone shown in Fig. 4 is cooperatively, executed by the second earphone logical
Letter sub-process 500 may include: to obtain channel condition information or from described related logical via listening to first wireless link
Channel condition information is obtained in letter parameter, and determines next frequency range (step 501) based on acquired channel condition information；With
And identified next frequency range is used via second wireless link, the phase of the audio data is received from first earphone
Close information (step 502).The details of step 501 and step 502 carried out detailed description above in conjunction with Fig. 1 and Fig. 2, herein
It does not repeat.In some embodiments, the channel condition information includes frequency hopping table, and the communication pattern of each Radio Link can select
From in any one of the group being made of classical bluetooth, low-power consumption bluetooth, low-power consumption bluetooth audio.
As shown in fig. 6, the substitution of the sub-process 500 as Fig. 5,400 phase of process executed with the first earphone shown in Fig. 4
It ordinatedly, may include: to be used for via listening to first wireless link acquisition by the communication sub-process 600 that the second earphone executes
Next frequency range of first wireless link, or obtain from the relevant communication parameter for first wireless link
Next frequency range (step 601)；Via next frequency range of first wireless link acquired in the second wireless link use
As next frequency range, the relevant information (step 602) of the audio data is received from first earphone.Step 601 and step
602 details carried out detailed description above in conjunction with Fig. 1 and Fig. 2, and this will not be repeated here.
Above, the selection of the first earphone and the second earphone can be dynamically in two earphones, can be dynamically selected
The better earphone of communication conditions in two earphones between another equipment as the first earphone (with main earphone is made), thus
Improve the information transfer efficiency and transmission stability between another equipment and bi-telephone.As an example, communication conditions can wrap
It includes but is not limited to corresponding earphone and receive the intensity (RSSI) of the signal from another equipment, the reception of corresponding earphone from another equipment
The signal-to-noise ratio of signal, any one of packet loss late (PLR) or several.
Fig. 7 shows the timing diagram of the method communicated according to the wireless headset of the embodiment of the present disclosure with another equipment.Such as
Shown in Fig. 7, in the preceding part of the period of nth frame (N is natural number), from another equipment via the first wireless link to the first ear
Machine is sent packets of audio data (include audio data), and the second earphone then fetches acquisition by listening to the first radio chains and sets from another
Standby packets of audio data (including audio data)；In the rear part of the period of nth frame, by the first earphone via the second radio chains
Connect to the second earphone send audio data relevant information, including but not limited to instruction packet (as shown in Figure 7), ECC packet, received from
The packets of audio data etc. of another equipment.In next frame, that is, N+1 frame, by the second earphone (or first earphone) via
One wireless link sends ACK/NACK packet to another equipment, and receives the ACK/NACK via the first wireless link by another equipment
Packet.In some embodiments, after same packets of audio data is retransmitted M times, first earphone and/or the second earphone can be to
Another equipment sends confirmation response (ACK) packet, and M is any natural number in the range of 1 to 5.In some embodiments, also
It can use bag-losing hide (PLC) technology to compensate the packets of audio data not obtained correctly.In this way, limiting another set
The standby number of retransmissions to same packets of audio data, reduces the time delay of audio transmission, cooperates various compensation or correction means, takes into account
The accuracy of audio transmission.
In some embodiments, first earphone can be from its Bluetooth frame (i.e. N between another equipment
Frame) slot starting point 701 by enabling the communication of second wireless link at the first timing 705 of the first period, also
It is to start to enable the second wireless link to the second earphone transmission such as instruction packet.As an example, first period can pass through
Duration (such as " transmission " in nth frame shown in fig. 7, the packets of audio data shown in " reception " frame of packets of audio data
Duration) plus the allowance period 703 and obtain.
In some embodiments, the maximum that the duration of the packets of audio data can be the packets of audio data continues
Time 702, maximum duration of the packets of audio data can be provided by Bluetooth protocol or by first earphone with it is described
Another equipment negotiates to obtain.That is, first period can pass through the maximum duration 702 of the packets of audio data
In addition the allowance period 703 and obtain.For example, the maximum duration of packets of audio data can also according to Bluetooth frame type without
.So, it can be ensured that the transmission time and audio of packets of audio data
The transmission time of the relevant information of data is not overlapped, the former tone hopping information is followed in view of the latter, will not be by two kinds with a channel
It transmission while occupying, it is possible to prevente effectively from interfering with each other each other, and improve signal transmission quality.
In some embodiments, each earphone generally includes Synchronization Component shown in Fig. 3, such as, but not limited to before radio frequency
End 301, analog-digital converter 302, synchronous and demodulation module 303, phaselocked loop 306 and frequency divider 307 etc., between executing and
Timing synchronization between earphone and another equipment.In some embodiments, communication interface can be equipped on each earphone, to realize
Information each other transmits/receives.It can be equipped with processor on each earphone, be stored thereon with computer executable instructions,
To execute the various processing steps of corresponding wireless link and frequency hopping.The processor can be implemented as application-specific IC
(ASIC), any one in system on chip (SOC), user-programmable gate array (FPGA), digital signal processing chip (DSP) etc.
Kind or combinations thereof.
In some embodiments, the function of corresponding first wireless link, second wireless link etc. can be in the first earphone
It is realized in the same chip；The functions such as corresponding first wireless link, second wireless link can also be same in second earphone
It is realized in chip.In Fig. 7, in same time slot, the first wireless link occupied for the first period, and the second wireless link occupies remaining
Period.Second wireless link and the first wireless link use same channel.In a chip, when using same channel, by PLL
The radio-frequency carrier that (phaselocked loop) generates, i.e. local oscillator (Local Oscillator) frequency is constant, reduces phaselocked loop production
The switching time needed when raw different radio frequency carrier wave, to accordingly reduce the allowance period 703, so that two earphones pass through second
Wireless link can transmit more information.
In some embodiments, second earphone can also enable second wireless link at the second timing 706
Communication, that is, start to start the reception of the relevant information to the audio data from the first earphone, second timing 706
It can be the rank of several microseconds or more than ten microseconds than first timing 705 early a period of time 704, this time 704, so as to
Nargin is provided with the error of the transmission timing of the relevant information for the audio data, it is ensured that the second earphone can be completely received this
The relevant information of audio data, such as, but not limited to instruction packet.
The structure of the bluetooth physical frame according to the embodiment of the present disclosure is illustrated below with reference to Fig. 8 (a) and Fig. 8 (b).It is blue
There are two types of message transmission rates for tooth transmission, and one is basic rate, another kind is enhancing rate.The packet format of basic rate is such as
Shown in Fig. 8 (a), bluetooth physical frame includes 3 fields, is to visit respectively on the direction from least significant bit to most significant bit
Ask the fields such as code 801, packets headers 802 and payload 803, in which: access code 801 is the mark with piconet (piconet)
Will is used for timing synchronization, migration, paging and inquiry；Packets headers 802 include the information for Bluetooth link control；Effectively
Load 803 carries effective information, can be Bluetooth audio frequency data in the disclosure.Technical term " audio used herein
Data packet " can indicate to remove in bluetooth physical frame after the information such as access code 801, packets headers 802 that payload 803 is corresponding to be
Audio data.Enhance rate packet format it is as shown in Figure 8 (b), the bluetooth physical frame include 6 fields, from it is minimum effectively
On position to the direction of most significant bit, it is access code 804 respectively, packets headers 805, protection interval 806, synchronizes 807, reinforces rate
Payload 808 and the grouping fields such as tail 809, wherein access code 804, packets headers 805 and reinforce rate payload 808 with
Access code 801, packets headers 802 in Fig. 8 (a) is similar with payload 803, and this will not be repeated here.Protection interval 806 indicates grouping
Interval time between first 805 and synchronous 807；Synchronous 807 include synchronizing sequence, and usually differential phase keying (DPSK) modulation is used
Synchronizing sequence；It is grouped tail 809 and different settings is used for different modulating mode.In some embodiments, for synchronous
For data, in payload 803 and reinforce being used for finally, being also provided with such as 16 bits for rate payload 808
Cyclic redundancy check.
The error correcting code contained in ECC packet described herein is to payload 803 and to reinforce rate payload 808
In audio data Error Correction of Coding, can use various coding modes, including but not limited in institute (RS) coding, BCH
(Bose, Ray-Chaudhuri and Hocquenghem) coding etc..In some embodiments, ECC packet is more than physical layer
Each layer, the layers multiplexed Bluetooth agreements such as bluetooth medium access control (mac) layer, bluetooth host control interface layer, physical layer can be with
Using the symbol rate of 2 Mb/s, modulation system can be quadrature phase shift keying (QPSK) or GFSK Gaussian Frequency Shift Keying (GFSK).Bluetooth
Physical layer can use the symbol rate of 1Mb/s, and ECC packet uses higher symbol rate, can transmit more correction bits, can have more preferable
Error correcting capability.
Fig. 8 (c) shows the exemplary structure of improvement of the bluetooth physical frame of the enhancing rate mode according to the embodiment of the present disclosure
Figure, the bluetooth physical frame for comparing enhancing rate mode shown in Fig. 8 (b) eliminate the fields such as access code 804, packets headers 805.By
It is regularly sending and is receiving beneficial to the relevant information of audio data, waited for without access code 804 to determine whether there is data packet
It receives.For the second earphone, when knowing the arrival of each data packet (such as packets of audio data, instruction packet, ECC packet etc.)
Between, it is only necessary to accurate synchronization is done using synchronous 807.The improvement example of bluetooth physical frame shown in Fig. 8 (c) can be applicable in
The relevant information of the audio data transmitted between the first earphone and the second earphone, including but not limited to packets of audio data, instruction
Packet, ECC packet etc. benefit from the simplification to the structure of bluetooth physical frame and remove non-essential information from it, can further increase
Add volume of transmitted data and data transmission efficiency.
In addition, range includes any and all based on this public affairs although exemplary embodiment has been described herein
That opens has equivalent element, modification, omission, combination (for example, scheme that various embodiments are intersected), reorganization or the implementation changed
Example.Element in claims will be construed broadly as based on the language used in claim, however it is not limited in this explanation
Described example, example are to be interpreted as nonexcludability in book or during the implementation of the application.Therefore, this specification and
Example is intended to be to be considered only as example, and real scope and spirit are by following following claims and the full scope of its equivalent institute
Instruction.
Above description is intended to illustrative rather than restrictive.For example, above-mentioned example (or one or more side
Case) it can be in combination with one another.Such as other embodiments can be used when reading foregoing description in those of ordinary skill in the art.
In addition, various features can be grouped together to simplify the disclosure in above-mentioned specific embodiment.This should not be construed as
A kind of not claimed disclosed feature is necessary intention for any claim.On the contrary, subject of the present invention can be with
Less than whole features of specific disclosed embodiment.To which following claims is incorporated to herein as example or embodiment
In specific embodiment, wherein each claim is independently as individual embodiment, and consider that these embodiments can be with
It is combined with each other with various combinations or arrangement.The scope of the present invention should refer to appended claims and these claims are entitled
The full scope of equivalent form determines.
Claims (26)
1. a kind of wireless headset, including two earphones, the first earphone in described two earphones is configured as: being built with another equipment
Vertical first wireless link, and the relevant communication parameter of first wireless link is transmitted so that the second earphone is logical using the correlation
Letter parameter listens to first wireless link, which is characterized in that
First earphone is additionally configured to:
It obtains the channel condition information of first wireless link and is determined based on acquired channel condition information for institute
Next frequency range of the first wireless link is stated, or obtains the next frequency for being used for first wireless link from another equipment
Section；
Via first wireless link, frequency hopping is realized using next frequency range, receives audio data from another equipment；
And
Via with first wireless link the second wireless link independent of each other, using first wireless link it is described under
One frequency range realizes frequency hopping as next frequency range, to follow the frequency hopping strategies of first wireless link, the second earphone of Xiang Suoshu
Transmit the relevant information of audio data；
Second earphone is additionally configured to: via the second wireless link, using next frequency range of first wireless link
As next frequency range, to follow the frequency hopping strategies of first wireless link, audio data is received from first earphone
Relevant information.
2. wireless headset according to claim 1, which is characterized in that first wireless link and second radio chains
The transmission connect occupies the different periods of same time slot and uses identical channel.
3. wireless headset according to claim 1, which is characterized in that second earphone is additionally configured to: via listening to
It states the first wireless link to obtain channel condition information or obtain channel condition information from the relevant communication parameter, and is based on
Acquired channel condition information determines next frequency range.
4. wireless headset according to claim 1, which is characterized in that second earphone is additionally configured to: via listening to
It states the first wireless link and obtains the next frequency range for being used for first wireless link, or obtained from the relevant communication parameter
Next frequency range for first wireless link.
5. wireless headset according to claim 1, which is characterized in that the channel condition information includes frequency hopping table, each
The communication pattern of Radio Link is any in the group being made of classical bluetooth, low-power consumption bluetooth, low-power consumption bluetooth audio
It is a kind of.
6. wireless headset according to claim 1, which is characterized in that first earphone is main earphone or from earphone, and
Dynamically it is selected as the better earphone of communication conditions in described two earphones between another equipment.
7. wireless headset according to claim 5, which is characterized in that first earphone is additionally configured to: from itself and institute
The slot starting point of the Bluetooth frame between another equipment is stated by enabling second radio chains at the first timing of the first period
The communication connect, first period are obtained by the duration of packets of audio data plus the allowance period.
8. wireless headset according to claim 7, which is characterized in that first period passes through the packets of audio data
The maximum duration obtains plus the allowance period, maximum duration of the packets of audio data provided by Bluetooth protocol or
Negotiate to obtain by first earphone and another equipment.
9. wireless headset according to claim 7, which is characterized in that second earphone is additionally configured to: in the second timing
Place enables the communication of second wireless link, and second timing a period of time more early than first timing, this time is
The rank of several microseconds or more than ten microseconds.
10. wireless headset according to claim 1, which is characterized in that the relevant information of the audio data includes by such as
At least one of the group that lower information is constituted:
Instruction packet, the instruction packet show first earphone to the reception situation of the packets of audio data from another equipment；
Error correcting code packet, the error correcting code packet include to carry out encoding resulting error correcting code by the audio data for receiving the first earphone
And audio data is not included；And
Packets of audio data by first earphone received from another equipment.
11. wireless headset according to claim 1, which is characterized in that first earphone and/or the second earphone also configure
Are as follows: after same packets of audio data is retransmitted M times, confirmation response (ACK) packet, the model that M is 1 to 5 are sent to another equipment
Enclose interior any natural number.
12. wireless headset according to claim 11, which is characterized in that first earphone and/or the second earphone are also matched
It is set to: the packets of audio data not obtained correctly being compensated using bag-losing hide (PLC) technology.
13. wireless headset according to claim 9, which is characterized in that the communication pattern of second Radio Link uses
Bluetooth physical frame using enhancing rate format and eliminate access code field therein and be grouped head file.
14. a kind of communication means of wireless headset, the wireless headset includes the first earphone and the second earphone, first earphone
Be configured as: establishing the first wireless link with another equipment, and transmit the relevant communication parameter of first wireless link so as to
Second earphone listens to first wireless link using the relevant communication parameter, which is characterized in that the communication means
Include:
By first earphone, obtains the channel condition information of first wireless link and believed based on acquired channel conditions
Breath is obtained for described first wirelessly to determine next frequency range for first wireless link, or from another equipment
Next frequency range of link；
By first earphone, frequency hopping is realized using next frequency range via first wireless link, from described another
Equipment receives audio data；
By first earphone, first nothing is used via with first wireless link the second wireless link independent of each other
Next frequency range of line link realizes frequency hopping as next frequency range, to follow the frequency hopping strategies of first wireless link, to
The relevant information of audio data described in second earphone transmission.
15. communication means according to claim 14, which is characterized in that first wireless link and described second is wirelessly
The transmission of link occupies the different periods of same time slot and uses identical channel.
16. communication means according to claim 14, which is characterized in that the communication means further includes, by described second
Earphone:
It obtains channel condition information via first wireless link is listened to or obtains channel from the relevant communication parameter
Condition information, and next frequency range is determined based on acquired channel condition information；
Identified next frequency range is used via second wireless link, receives the audio data from first earphone
Relevant information.
17. communication means according to claim 14, which is characterized in that the communication means further includes, by described second
Earphone:
It is used for next frequency range of first wireless link via listening to first wireless link and obtaining, or from the correlation
The next frequency range for being used for first wireless link is obtained in messaging parameter；
Via second wireless link use acquired in first wireless link next frequency range as next frequency range, from
First earphone receives the relevant information of the audio data.
18. communication means according to claim 14, which is characterized in that the channel condition information includes frequency hopping table, respectively
The communication pattern of a Radio Link appointing in the group being made of classical bluetooth, low-power consumption bluetooth, low-power consumption bluetooth audio
What is a kind of.
19. communication means according to claim 14, which is characterized in that the communication means further include: dynamic select two
The better earphone of communications status in a earphone between another equipment is as first earphone.
20. communication means according to claim 18, which is characterized in that the communication means further includes, by described first
Earphone: it is enabled at the first timing from the slot starting point of its Bluetooth frame between another equipment by the first period
The communication of second wireless link, first period add the allowance period by the duration of the packets of audio data
It obtains.
21. communication means according to claim 20, which is characterized in that first period passes through the packets of audio data
The maximum duration obtained plus the allowance period, maximum duration of the packets of audio data provided by Bluetooth protocol or
Person is negotiated to obtain by first earphone and another equipment.
22. communication means according to claim 20, which is characterized in that the communication means further includes, by described second
Earphone: enabling the communication of second wireless link at the second timing, and second timing is one section more early than first timing
Time, this time are the rank of several microseconds or more than ten microseconds.
23. communication means according to claim 14, which is characterized in that the relevant information of the audio data includes by such as
At least one of the group that lower information is constituted:
Instruction packet, the instruction packet show first earphone to the reception situation of the packets of audio data from another equipment；
Error correcting code packet, the error correcting code packet include to carry out encoding resulting error correcting code by the audio data for receiving the first earphone
And audio data is not included；And
Packets of audio data by first earphone received from another equipment.
24. communication means according to claim 14, which is characterized in that the communication means further includes, by described first
Earphone and/or the second earphone: after same packets of audio data is retransmitted M times, confirmation response (ACK) is sent to another equipment
Packet, M are any natural number in the range of 1 to 5.
25. communication means according to claim 24, which is characterized in that the communication means further include: hidden using packet loss
Hiding (PLC) technology compensates the packets of audio data not obtained correctly.
26. communication means according to claim 22, which is characterized in that the communication pattern of second Radio Link uses
Bluetooth physical frame using enhancing rate format and eliminate access code field therein and be grouped head file.
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| CN110944311B (en) * | 2019-11-06 | 2023-07-28 | 泰凌微电子(上海)股份有限公司 | Method for distributing time slot of wireless earphone and wireless earphone adopting same |
| CN111132025B (en) * | 2019-11-22 | 2022-04-12 | 恒玄科技(上海)股份有限公司 | Wireless earphone assembly and wireless communication system |
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| CN110351696A (en) | 2019-10-18 |
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