CN108696339A - Wireless blue tooth with channel coding is to whispering voice communication system and communication means - Google Patents
Wireless blue tooth with channel coding is to whispering voice communication system and communication means Download PDFInfo
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- CN108696339A CN108696339A CN201810336486.4A CN201810336486A CN108696339A CN 108696339 A CN108696339 A CN 108696339A CN 201810336486 A CN201810336486 A CN 201810336486A CN 108696339 A CN108696339 A CN 108696339A
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- bluetooth
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
-
- 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
Abstract
It includes intelligent wireless device to whispering voice communication system that the present invention, which provides a kind of wireless blue tooth with channel coding, bluetooth master includes the first Bluetooth chip, first Bluetooth chip establishes both SCO link/CSB links/ACL link, channel coding is carried out to both SCO link/CSB links/ACL link data, and the data transmission after coding to bluetooth physical layer is sent;Bluetooth slave devices include the second Bluetooth chip, second Bluetooth chip establishes both SCO link/CSB links/ACL link, the bluetooth physical layer of second Bluetooth chip receives both SCO link/CSB links/ACL link data after the coding of the bluetooth physical layer transmission of the first Bluetooth chip, and the both SCO link after the coding of reception/CSB links/ACL link data are carried out channel decoding.The present invention is improved Bluetooth protocol in main equipment and between equipment, and main equipment uses channel coding/decoding with from the subsystem that equipment is formed to the data to be transmitted, and improves the reliability of entire audio data transmission.
Description
Technical field
The present invention relates to technical field of bluetooth communication, more particularly to a kind of wireless blue tooth with channel coding is logical to whispering voice
Letter system and communication means.
Background technology
Pursuit with people to wirelessly living, wireless headset, the audio frequency apparatuses such as wireless sound box enter average family.It is blue
Tooth is applied to wireless headset as most popular radio connection, in wireless sound box.Not only in smart machine (such as intelligence
Can mobile phone, personal computer, laptop etc.) constraint of line has been broken away between audio frequency apparatus (earphone or speaker etc.), and
And the constraint of line can also be broken away between multiple audio frequency apparatuses (the left and right ear or multiple speakers of earphone), it realizes really wireless
Connection.
Existing wireless blue tooth voice communication system realizes language between major-minor earphone generally by synchronization link (SCO)
Sound communicates.Due to there is head barrier between major-minor earphone, if along with aerial interference signal is encountered, main earphone is sent out to from earphone
The data sent are easy error.In order to improve anti-interference ability, the data that can increase both SCO link/CSB links/ACL link retransmit
Number.But the delay of voice communication can be increased by increasing data retransmission times.Therefore, existing system is it is difficult to ensure that voice communication is low prolongs
When on the basis of transmitting.
Therefore, to solve the above-mentioned problems, need to ensure to carry out reliable data transmission on the basis of voice communication low delay
A kind of wireless blue tooth with channel coding is to whispering voice communication system and communication means.
Invention content
It is an object of the present invention to provide a kind of wireless blue tooths with channel coding to whispering voice communication system, described
System includes intelligent wireless device, bluetooth master and Bluetooth slave devices, the bluetooth master and the Bluetooth slave devices structure
At subsystem, communicated between the intelligent wireless device and the subsystem, wherein
The intelligent wireless device establishes bluetooth connection, the intelligence with the bluetooth master according to bluetooth wireless protocol
Bi-directional data transmitting-receiving is carried out between wireless device and the bluetooth master;
The bluetooth master include the first Bluetooth chip, first Bluetooth chip establish both SCO link/CSB links/
ACL link carries out channel coding to both SCO link/CSB links/ACL link data, and by the data transmission after coding to bluetooth
Physical layer is sent;
The Bluetooth slave devices include the second Bluetooth chip, second Bluetooth chip establish both SCO link/CSB links/
The bluetooth physical layer of ACL link, second Bluetooth chip receives the volume that the bluetooth physical layer of first Bluetooth chip is sent
Both SCO link/CSB links/ACL link data after code, and by the both SCO link after the coding of reception/CSB links/ACL link number
According to progress channel decoding;Restore audio data after decoding, audio data carries out audio broadcasting by Bluetooth slave devices.
Preferably, the channel coding includes forward error correction coding and/or interweaving encoding.
Preferably, the forward error correction coding includes adding redundancy to transmission data, wherein the redundancy adds
Add mode includes Reed-Solomon codes or convolutional code.
Preferably, bluetooth master uses before carrying out channel coding to both SCO link/CSB links/ACL link data
Opus formats carry out audio data coding, and Bluetooth slave devices carry out audio data solution after restoring audio data using Opus formats
Code.
Preferably, the channel decoding includes decoding FEC code and/or trellis decoded.
Another aspect of the present invention is to provide a kind of wireless blue tooth with channel coding to whispering voice communication means, institute
The method of stating includes:
Intelligent wireless device is established ACL link according to bluetooth wireless protocol with bluetooth master and is connect, the intelligent radio
Bi-directional data transmitting-receiving is carried out between equipment and the bluetooth master;
The bluetooth master establishes both SCO link/CSB links/ACL link by the first Bluetooth chip, to both SCO link/
CSB links/ACL link data carry out channel coding, and extremely by the both SCO link after coding/CSB links/ACL link data transmission
Bluetooth physical layer is sent;
The Bluetooth slave devices establish both SCO link/CSB links/ACL link by the second Bluetooth chip, and described second is blue
The bluetooth physical layer of tooth chip receives both SCO link/CSB chains after the coding of the bluetooth physical layer transmission of first Bluetooth chip
Road/ACL link data, and the both SCO link after the coding of reception/CSB links/ACL link data are subjected to channel decoding, decoding
After restore audio data, audio data carries out audio broadcasting by Bluetooth slave devices.
Preferably, the channel coding includes forward error correction coding and/or interweaving encoding.
Preferably, the forward error correction coding includes adding redundancy to transmission data, wherein the redundancy
Addition manner includes Reed-Solomon codes or convolutional code.
Preferably, bluetooth master uses before carrying out channel coding to both SCO link/CSB links/ACL link data
Opus formats carry out audio data coding, and Bluetooth slave devices carry out audio data solution after restoring audio data using Opus formats
Code
Preferably, the channel decoding includes decoding FEC and/or trellis decoded.
A kind of wireless blue tooth with channel coding provided by the invention is to whispering voice communication system and communication means, in intelligence
It is communicated using conventional Bluetooth agreement between wireless device and bluetooth master, between bluetooth master and Bluetooth slave devices
By to introducing channel coding in conventional Bluetooth agreement, the subsystem in communication system being formed, to both SCO link/CSB links/ACL
Link data carries out channel coding, so that system is had error correcting capability and anti-interference ability, greatly bluetooth master is avoided to forward
The generation of error code when data makes Bluetooth slave devices receive smooth audio, ensure that voice communication between bluetooth master-slave equipment
Quality.
A kind of wireless blue tooth with channel coding of the present invention uses Opus formats to whispering voice communication system and communication means
To data carry out audio data coding after so that channel coding have more redundancies, to be greatly improved main bluetooth from
The reliability of data transmission between equipment.
It should be appreciated that aforementioned description substantially and follow-up description in detail are exemplary illustration and explanation, it should not
As the limitation to the claimed content of the present invention.
Description of the drawings
With reference to the attached drawing of accompanying, the more purposes of the present invention, function and advantage are by the as follows of embodiment through the invention
Description is illustrated, wherein:
Fig. 1 diagrammatically illustrates a kind of wireless blue tooth with channel coding of the present invention and shows the structure of whispering voice communication system
It is intended to;
Fig. 2 shows a kind of wireless blue tooths with channel coding of the invention to the schematic diagram of whispering voice communication means.
Specific implementation mode
By reference to exemplary embodiment, the purpose of the present invention and function and the side for realizing these purposes and function
Method will be illustrated.However, the present invention is not limited to exemplary embodiment as disclosed below;Can by different form come
It is realized.The essence of specification is only to aid in the detail of the various equivalent modifications Integrated Understanding present invention.
Hereinafter, the embodiment of the present invention will be described with reference to the drawings, relevant technical terms should be people in the art
Known to member.In the accompanying drawings, identical reference numeral represents same or similar component or same or like step,
Unless otherwise indicated.Present disclosure is illustrated below by specific embodiment, according to an embodiment of the invention, intelligence
Energy wireless device can be mobile phone, tablet computer, iPad.Intelligent wireless device with include a bluetooth master and a bluetooth
The subsystem (i.e. a pair of of earphone that the main earphone of a bluetooth and a bluetooth are constituted from earphone) constituted from equipment is communicated.Such as
A kind of wireless blue tooth with channel coding of the present invention shown in Fig. 1 is to the structural schematic diagram of whispering voice communication system, according to the present invention
Embodiment, a kind of wireless blue tooth with channel coding is to whispering voice communication system, including intelligent wireless device 101 is (with mobile phone
For), bluetooth master 102 and Bluetooth slave devices 103, bluetooth master 102 constitute subsystem (i.e. with Bluetooth slave devices 103
Wireless blue tooth is to ear), it is communicated between intelligent wireless device 101 and subsystem, wherein
Intelligent wireless device 101 establishes bluetooth connection, such as ACL chains with bluetooth master 102 according to bluetooth wireless protocol
Road connects.Bi-directional data receipts are carried out by the XL link connections of foundation between intelligent wireless device 101 and bluetooth master 102
Hair.Such as audio is sent to bluetooth master 102 by intelligent wireless device 101, while can also realize that bluetooth master 102 will
Audio is sent on intelligent wireless device 101.
Bluetooth master 101 includes the first Bluetooth chip, and the first Bluetooth chip is for establishing both SCO link/CSB links/ACL
Link, intelligent wireless device 101 send audio data by the first Bluetooth chip processing after carry out both SCO link/CSB links/
ACL link data are sent.According to an embodiment of the invention, channel coding is carried out to both SCO link/CSB links/ACL link data,
And the data transmission after coding to bluetooth physical layer is sent.According to an embodiment of the invention, channel coding include it is preceding to
Error Correction of Coding and/or interweaving encoding, forward error correction coding includes adding redundancy to transmission data, wherein the redundancy
Addition manner include Reed-Solomon codes or convolutional code.The present embodiment bluetooth master according to the present invention is to SCO chains
Road/CSB links/ACL link data use Opus formats to carry out audio data coding before carrying out channel coding.By channel coding
Both SCO link afterwards/CSB links/ACL link data send data in such a way that bluetooth physical layer is using broadcast.
Bluetooth slave devices 103 include the second Bluetooth chip, and the second Bluetooth chip establishes both SCO link/CSB links/ACL chains
Road, the bluetooth physical layer of the second Bluetooth chip receive the SCO after the coding of the bluetooth physical layer transmission of first Bluetooth chip
Link/CSB links/ACL link data, and the both SCO link after the coding of reception/CSB links/ACL link data are subjected to letter
Road decodes.Preferably, channel decoding includes decoding FEC code and/or trellis decoded.
Decoded data are restored audio data by the second Bluetooth chip, and audio data carries out audio by Bluetooth slave devices and broadcasts
It puts.Bluetooth slave devices carry out audio data decoding after restoring audio data using Opus formats according to an embodiment of the invention.
A kind of wireless blue tooth with channel coding of the present invention is to the schematic diagram of whispering voice communication means as shown in Figure 2, with reference to Fig. 2 pairs
A kind of wireless blue tooth with channel coding provided by the invention illustrates whispering voice communication means.
Intelligent wireless device 101 is established ACL link according to bluetooth wireless protocol with bluetooth master 102 and is connect, intelligent nothing
Bi-directional data transmitting-receiving is carried out between line equipment 101 and bluetooth master 102.Such as audio is sent to by intelligent wireless device 101
Bluetooth master 102, while can also realize that audio is sent on intelligent wireless device 101 by bluetooth master 102.
Bluetooth master 101 includes the first Bluetooth chip, and the first Bluetooth chip is for establishing both SCO link/CSB links/ACL
Link, intelligent wireless device 101 send audio data by the first Bluetooth chip processing after carry out both SCO link/CSB links/
ACL link data are sent.Bluetooth master uses before carrying out channel coding to both SCO link/CSB links/ACL link data
Opus formats carry out audio data coding, so that channel coding has more redundancies, to which main indigo plant be greatly improved
Reliability of the tooth from data transmission between equipment.
Channel coding carried out to both SCO link/CSB links/ACL link data, and by the both SCO link after coding/CSB chains
Road/ACL link data transmission to bluetooth physical layer is sent.According to an embodiment of the invention, channel coding includes preceding to entangling
Miscoding and/or interweaving encoding, forward error correction coding includes adding redundancy to transmission data, wherein the redundancy
Addition manner includes Reed-Solomon codes or convolutional code.Data after channel coding are by bluetooth physical layer using broadcast
Mode data are sent.
Bluetooth slave devices 103 include the second Bluetooth chip, and the second Bluetooth chip establishes both SCO link/CSB links/ACL chains
Road, the bluetooth physical layer of the second Bluetooth chip receive the both SCO link after the coding that the bluetooth physical layer of the first Bluetooth chip is sent/
CSB links/ACL link data, and the both SCO link after the coding of reception/CSB links/ACL link data are subjected to channel solution
Code.Preferably, channel decoding includes decoding FEC code and/or trellis decoded,
Second Bluetooth chip restores audio data after carrying out channel decoding to both SCO link/CSB links/ACL link data,
Audio data carries out audio broadcasting by Bluetooth slave devices.Bluetooth slave devices carry out sound after restoring audio data using Opus formats
Frequency is according to decoding.
A kind of wireless blue tooth with channel coding provided by the invention is applied to whispering voice communication system and communication means
Under the scene communicated between intelligent wireless device and bluetooth master and Bluetooth slave devices (wireless blue tooth is to ear), Bluetooth slave devices
It can only be communicated with the bluetooth master under the special scenes, ensure that the transmitting of data.
A kind of wireless blue tooth with channel coding provided by the invention is to whispering voice communication system and communication means, intelligent nothing
Line equipment by being communicated using conventional Bluetooth agreement between bluetooth master, and then realize with bluetooth master with it is blue
Tooth is communicated between the subsystem that equipment is constituted, and subsystem internal passes through to being introduced to both SCO link/CSB in conventional Bluetooth agreement
Link/ACL link data carry out channel coding, so that system is had error correcting capability and anti-interference ability, greatly avoid bluetooth master
The generation of error code when device forwards data makes Bluetooth slave devices receive smooth audio.
The present invention improves low the prolonging of voice communication data transmission between bluetooth master-slave equipment by increasing channel coding/decoding
When reliability, especially when there is environmental disturbances.Because of channel coding/decoding so that voice communication data passes between bluetooth master-slave equipment
It is defeated not error-prone, on the other hand so that the re-transmission of voice communication data is not needed or need less between major-minor earphone, it is achieved that language
The low delay of sound call.To realize the low delay of voice communication, high reliability is not easy interim card, it is not easy to have noise.
The present invention improves bluetooth master and Bluetooth slave devices remote by increasing channel coding/decoding, has environment to do
The reliability of data transmission when disturbing so that Bluetooth slave devices receive music, and whens voice etc. are not easy interim card, it is not easy to have noise.
The present invention can forward audio data between main Bluetooth slave devices with Opus encoding and decoding.Opus is under similar sound quality
Compared to sub-band coding (sub-band coding, SBC), Advanced Audio Coding (Advanced Audio Coding, AAC) etc. has
Higher code efficiency can reduce the power consumption of main Bluetooth slave devices in this way.
After the present invention carries out audio data coding using Opus formats to data, before carrying out channel coding so that channel is compiled
Code has more redundancies, to which the reliability of data transmission between main Bluetooth slave devices be greatly improved.
Explanation in conjunction with the present invention disclosed here and practice, the other embodiment of the present invention is for those skilled in the art
It all will be readily apparent and understand.Illustrate and embodiment is regarded only as being exemplary, true scope of the invention and purport are equal
It is defined in the claims.
Claims (10)
1. a kind of wireless blue tooth with channel coding is to whispering voice communication system, which is characterized in that the system comprises intelligent nothings
Line equipment, bluetooth master and Bluetooth slave devices, the bluetooth master constitute subsystem, the intelligence with the Bluetooth slave devices
It can be communicated between wireless device and the subsystem, wherein
The intelligent wireless device establishes bluetooth connection, the intelligent radio with the bluetooth master according to bluetooth wireless protocol
Bi-directional data transmitting-receiving is carried out between equipment and the bluetooth master;
The bluetooth master includes the first Bluetooth chip, and first Bluetooth chip establishes both SCO link/CSB links/ACL chains
Road carries out channel coding to both SCO link/CSB links/ACL link data, and by the data transmission after coding to bluetooth physical layer
It is sent;
The Bluetooth slave devices include the second Bluetooth chip, and second Bluetooth chip establishes both SCO link/CSB links/ACL chains
Road, after the bluetooth physical layer of second Bluetooth chip receives the coding that the bluetooth physical layer of first Bluetooth chip is sent
Both SCO link/CSB links/ACL link data, and the both SCO link after the coding of reception/CSB links/ACL link data are carried out
Channel decodes;Restore audio data after decoding, audio data carries out audio broadcasting by Bluetooth slave devices.
2. system according to claim 1, which is characterized in that the channel coding includes forward error correction coding and/or friendship
Knit coding.
3. system according to claim 2, which is characterized in that the forward error correction coding includes superfluous to transmission data addition
Remaining information, wherein the redundancy addition manner includes Reed-Solomon codes or convolutional code.
4. according to the system described in any claim in claims 1 to 3, which is characterized in that bluetooth master is to SCO
Link/CSB links/ACL link data use Opus formats to carry out audio data coding, Bluetooth slave devices before carrying out channel coding
Audio data decoding is carried out using Opus formats after restoring audio data.
5. system according to claim 1, which is characterized in that channel decoding include decoding FEC code and/or
Trellis decoded.
6. a kind of wireless blue tooth with channel coding is to whispering voice communication means, which is characterized in that the method includes:
Intelligent wireless device is established ACL link according to bluetooth wireless protocol with bluetooth master and is connect, the intelligent wireless device
Bi-directional data transmitting-receiving is carried out between the bluetooth master;
The bluetooth master establishes both SCO link/CSB links/ACL link by the first Bluetooth chip, to both SCO link/CSB chains
Road/ACL link data carries out channel coding, and by the both SCO link after coding/CSB links/ACL link data transmission to bluetooth
Physical layer is sent;
The Bluetooth slave devices establish both SCO link/CSB links/ACL link, the second bluetooth core by the second Bluetooth chip
The bluetooth physical layer of piece receive first Bluetooth chip bluetooth physical layer send coding after both SCO link/CSB links/
ACL link data, and the both SCO link after the coding of reception/CSB links/ACL link data are subjected to channel decoding, after decoding
Restore audio data, audio data carries out audio broadcasting by Bluetooth slave devices.
7. according to the method described in claim 6, it is characterized in that, the channel coding includes forward error correction coding and/or friendship
Knit coding.
8. the method according to the description of claim 7 is characterized in that the forward error correction coding includes superfluous to transmission data addition
Remaining information, wherein the addition manner of the redundancy includes Reed-Solomon codes or convolutional code.
9. according to the method described in any claim in claim 6 to 8, which is characterized in that bluetooth master is to SCO
Link/CSB links/ACL link data use Opus formats to carry out audio data coding, Bluetooth slave devices before carrying out channel coding
Audio data decoding is carried out using Opus formats after restoring audio data
10. according to the method described in claim 6, it is characterized in that, channel decoding includes decoding FEC and/or friendship
Knit decoding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336486.4A CN108696339A (en) | 2018-04-13 | 2018-04-13 | Wireless blue tooth with channel coding is to whispering voice communication system and communication means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336486.4A CN108696339A (en) | 2018-04-13 | 2018-04-13 | Wireless blue tooth with channel coding is to whispering voice communication system and communication means |
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| CN108696339A true CN108696339A (en) | 2018-10-23 |
Family
ID=63844992
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| CN201810336486.4A Pending CN108696339A (en) | 2018-04-13 | 2018-04-13 | Wireless blue tooth with channel coding is to whispering voice communication system and communication means |
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| CN109461451A (en) * | 2018-11-23 | 2019-03-12 | 深圳时空壶技术有限公司 | A kind of voice transmission method and equipment and system based on OPUS |
| CN109660971A (en) * | 2018-12-05 | 2019-04-19 | 恒玄科技（上海）有限公司 | Wireless headset and communication means for wireless headset |
| CN111385778A (en) * | 2018-12-29 | 2020-07-07 | 华为终端有限公司 | Communication method and terminal device |
| CN111885554A (en) * | 2020-04-24 | 2020-11-03 | 珠海市杰理科技股份有限公司 | Link switching method based on double-wireless Bluetooth communication and related equipment |
| CN112399391A (en) * | 2019-08-16 | 2021-02-23 | 合肥炬芯智能科技有限公司 | Bluetooth broadcast communication method, system and master device and slave device thereof |
| WO2021223243A1 (en) * | 2020-05-08 | 2021-11-11 | 深圳市汇顶科技股份有限公司 | Audio data transmission method and apparatus, chip, and electronic device |
| CN115567086A (en) * | 2022-09-09 | 2023-01-03 | 安克创新科技股份有限公司 | Audio transmission device, audio playback device, and audio transmission and synchronization system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109461451A (en) * | 2018-11-23 | 2019-03-12 | 深圳时空壶技术有限公司 | A kind of voice transmission method and equipment and system based on OPUS |
| CN109461451B (en) * | 2018-11-23 | 2022-06-03 | 深圳时空壶技术有限公司 | Voice transmission method, device and system based on OPUS |
| CN109660971A (en) * | 2018-12-05 | 2019-04-19 | 恒玄科技（上海）有限公司 | Wireless headset and communication means for wireless headset |
| CN111385778A (en) * | 2018-12-29 | 2020-07-07 | 华为终端有限公司 | Communication method and terminal device |
| CN112399391A (en) * | 2019-08-16 | 2021-02-23 | 合肥炬芯智能科技有限公司 | Bluetooth broadcast communication method, system and master device and slave device thereof |
| CN112399391B (en) * | 2019-08-16 | 2024-03-19 | 合肥炬芯智能科技有限公司 | Bluetooth broadcast communication method and system, master device and slave device thereof |
| CN111885554A (en) * | 2020-04-24 | 2020-11-03 | 珠海市杰理科技股份有限公司 | Link switching method based on double-wireless Bluetooth communication and related equipment |
| CN111885554B (en) * | 2020-04-24 | 2023-09-12 | 珠海市杰理科技股份有限公司 | Link switching method based on dual-wireless Bluetooth communication and related equipment |
| WO2021223243A1 (en) * | 2020-05-08 | 2021-11-11 | 深圳市汇顶科技股份有限公司 | Audio data transmission method and apparatus, chip, and electronic device |
| CN115567086A (en) * | 2022-09-09 | 2023-01-03 | 安克创新科技股份有限公司 | Audio transmission device, audio playback device, and audio transmission and synchronization system |
| CN115567086B (en) * | 2022-09-09 | 2024-03-26 | 安克创新科技股份有限公司 | Audio transmission device, audio playing device and audio transmission and synchronization system |
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Address after: 201306 room 904, No. 800, Huanhu West 2nd Road, Lingang New Area, free trade Experimental Zone, Pudong New Area, Shanghai Applicant after: Hengxuan Technology (Shanghai) Co., Ltd Address before: 200135 Shanghai 647 free trade pilot area, 171 Pudong New Area Road, 1 buildings, 6 rooms Applicant before: Heng Xuan Technology (Shanghai) Co., Ltd. |
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Application publication date: 20181023 |