WO2018090461A1

WO2018090461A1 - Method and system for synchronizing data between multichannel wireless speakers

Info

Publication number: WO2018090461A1
Application number: PCT/CN2016/112914
Authority: WO
Inventors: 江中央
Original assignee: 深圳Tcl数字技术有限公司
Priority date: 2016-11-16
Filing date: 2016-12-29
Publication date: 2018-05-24
Also published as: CN106454635A; CN106454635B

Abstract

Disclosed in the present invention is a method for synchronizing data between multichannel wireless speakers, which may be applied in slave devices. The method comprises: sending a request to a master device for acquisition of audio data of a corresponding sound channel after successfully connecting to the master device; receiving the audio data of the corresponding sound channel sent by the master device, and receiving broadcasting information sent by the master device for acquisition of a current output location of audio data of a slave device and a corresponding serial number; sending the current output location of the audio data and the corresponding serial number to the master device according to the broadcasting information; receiving a difference value of corresponding audio data, which is obtained by the master device by means of calculation of the current output of the audio data location and the corresponding serial number, and adjusting the current output location of the audio data according to the difference value of the corresponding audio data. Further disclosed in the present invention is a system for synchronizing data among multichannel wireless speakers. The present invention achieves the synchronized output of audio data between different wireless sound channel speakers.

Description

Method and system for data synchronization between multi-channel wireless speakers

Technical field

The present invention relates to the field of multi-channel wireless speakers, and more particularly to a method and system for data synchronization between multi-channel wireless speakers.

Background technique

With the development of wireless technology, wireless bandwidth has been greatly improved, and wireless transmission of multiple channels has guaranteed transmission quality. By wirelessly transmitting multiple channels to multiple speakers, it is possible to avoid cumbersome wiring between multiple speakers; Multiple wireless speakers will not only make the smart TV lighter and thinner, but also improve the sound of the experience; currently based on Bluetooth, WIFI and other wireless speakers, generally output two channels or multiple sounds on the same speaker. Road, Synchronizing between two or more channels on an audio device, since the time base of the system is the same, time stamps can be used to synchronize multiple channels. However, if multiple channels are distributed to multiple wireless speakers, since there are at least ms-level errors in the system time reference of different speakers, if time is used to synchronize the wireless speakers of different channels, The synchronization error requirement of the us level between different channels will not be met.

Summary of the invention

The main object of the present invention is to provide a method and system for synchronizing data between multi-channel wireless speakers, aiming at solving wireless speakers that use time to synchronize different channels. The technical problem of the synchronization error requirement of the us level between different channels cannot be met.

To achieve the above object, a method for data synchronization between multi-channel wireless speakers provided by the present invention is applied to a slave device, and the method includes the following steps:

After successfully connecting with the master device, the audio data request for acquiring the corresponding channel is sent to the master device;

Receiving audio data of the corresponding channel sent by the master device, and receiving broadcast information of the current output location of the slave device audio data and the corresponding number sent by the master device;

Transmitting, according to the broadcast information, a current output location of the audio data and a corresponding number to the master device;

Receiving, by the master device, a corresponding audio data difference calculated by using a current output position of the audio data and a corresponding number, and adjusting a current output position of the audio data according to the corresponding audio data difference.

Optionally, the step of adjusting the current output position of the audio data according to the corresponding audio data difference value includes:

And inserting or deleting the corresponding audio data difference value according to the corresponding audio data difference value.

Optionally, the step of inserting or deleting the corresponding audio data difference value according to the corresponding audio data difference value includes:

Determining whether the corresponding audio data difference is less than zero or greater than zero;

If the corresponding audio data difference is less than zero, insert the corresponding audio data difference value into the current output position of the audio data;

If the corresponding audio data difference is greater than zero, the audio data corresponding to the corresponding audio data difference value is deleted from the current output position of the audio data.

Optionally, the method includes:

Start the audio collection module to collect audio data, and number the audio data collected each time;

After establishing a connection with the slave device requesting the connection, the audio data of the corresponding channel is sent to the slave device with successful connection;

When the number of successfully connected slave devices reaches a preset value, information about the current output location of the device audio data and the corresponding audio data number is obtained and sent to the slave device with successful connection;

Obtaining the current output position of the audio data sent by the connected slave device and the corresponding audio data number, and selecting a reference number;

Comparing the audio data number of the audio data output location sent by the connected slave device with the reference number, obtaining a corresponding audio data difference value, and transmitting the corresponding audio data difference value to the corresponding slave device.

Optionally, the step of selecting the reference number includes:

Sorting the audio data numbers corresponding to the obtained audio data output positions;

And extracting an audio data number of a median of the audio data numbers corresponding to the audio data output position, and using the median audio data number as a reference number.

Optionally, the step of starting the audio collection module to perform audio data collection and numbering the collected audio data includes:

Connect the master device to the power source and turn it on, and notify the slave device that the master device is running through cyclic broadcast.

Optionally, the audio data number of the audio data output location sent by the connected slave device is compared with a reference number to obtain a corresponding audio data difference value, and the corresponding audio data difference value is sent to the corresponding The steps from the device include:

And subtracting the audio data number of the audio data output location sent by the connected slave device with the reference number to obtain a corresponding audio data difference value;

And if the corresponding audio data difference is greater than zero or less than zero, sending the corresponding audio data difference to the corresponding slave device;

If the corresponding audio data difference is equal to zero, the corresponding audio data difference value is ignored.

In addition, in order to achieve the above object, the present invention also provides a system for data synchronization between multi-channel wireless speakers, the system comprising a master device and a slave device, the slave device comprising:

a first sending module, configured to send an audio data request for acquiring a corresponding channel to the master device after the connection with the master device is successful;

a first receiving module, configured to receive audio data of a corresponding channel sent by the master device, and receive broadcast information that is sent by the master device to obtain a current output location of the slave device audio data and a corresponding number;

a second sending module, configured to send, according to the broadcast information, a current output location of the audio data and a corresponding number to the master device;

The adjusting module is configured to receive a corresponding audio data difference calculated by the primary device by using a current output position of the audio data and a corresponding number, and adjust the current output position of the audio data according to the corresponding audio data difference.

Optionally, the adjustment module is further configured to:

Optionally, the adjusting module includes:

a determining unit, configured to determine whether the corresponding audio data difference is less than zero or greater than zero;

An insertion unit, configured to insert the corresponding audio data difference value into a current output position of the audio data if the corresponding audio data difference value is less than zero;

a deleting unit, configured to delete audio data corresponding to the corresponding audio data difference value from a current output position of the audio data, if the corresponding audio data difference value is greater than zero.

Optionally, the master device includes:

The startup module is configured to start an audio collection module for audio data collection, and number the audio data collected each time;

a third sending module, configured to send audio data of the corresponding channel to the slave device that is successfully connected after establishing a connection with the slave device that requests the connection;

The fourth sending module is configured to: when the number of the successfully connected slave devices reaches a preset value, send information about the current output location of the device audio data and the corresponding audio data number to the slave device that is successfully connected;

The selection module is configured to obtain a current output position of the audio data sent by the connected slave device and a corresponding audio data number, and select a reference number;

a comparison module, configured to compare an audio data number of the audio data output location sent by the connected slave device with a reference number, obtain a corresponding audio data difference value, and send the corresponding audio data difference value to the corresponding slave device.

Optionally, the selecting module includes:

a sorting unit, configured to sort the audio data numbers corresponding to the obtained audio data output locations;

And an extracting unit, configured to extract an audio data number of a median of the audio data numbers corresponding to the audio data output position, and use the median audio data number as a reference number.

Optionally, the system further includes:

The notification module is configured to connect the main device to the power source and turn it on, and notify the slave device that the master device is in a running state by means of a cyclic broadcast.

Optionally, the comparing module includes:

a subtracting unit, configured to subtract the audio data number of the audio data output location sent by the connected slave device from the reference number, to obtain a corresponding audio data difference value;

a sending unit, configured to send the corresponding audio data difference value to a corresponding slave device if the corresponding audio data difference is greater than zero or less than zero;

The ignoring unit is configured to ignore the corresponding audio data difference value if the corresponding audio data difference is equal to zero.

The invention transmits an audio data request for acquiring a corresponding channel to the master device after successfully connecting with the master device; receiving audio data of the corresponding channel sent by the master device, and receiving the acquiring slave device sent by the master device The current output position of the audio data and the broadcast information of the corresponding number; the current output position and the corresponding number of the audio data are sent to the master device according to the broadcast information; and the corresponding calculated by the master device through the current output position of the audio data and the corresponding number is received. Audio data difference, and adjusting the current output position of the audio data according to the corresponding audio data difference. In the above manner, the connection request is first sent to the master device, and after the connection with the master device is successful, the audio data request for acquiring the corresponding channel is sent to the master device; and then the audio data of the corresponding channel sent by the master device is received, And receiving broadcast information of the current output location and the corresponding number of the slave device audio data sent by the master device; sending the current output location and the corresponding number of the audio data to the master device according to the broadcast information; and receiving the master device to pass the audio data Corresponding audio data difference calculated by the current output position and the corresponding number, and adjusting the current output position of the audio data according to the corresponding audio data difference. This enables simultaneous output with other wireless speakers.

DRAWINGS

1 is a schematic flow chart of a first embodiment of a method for data synchronization between multi-channel wireless speakers according to the present invention;

2 is a step of receiving the corresponding audio data difference calculated by the master device through the current output position of the audio data and the corresponding number, and adjusting the current output position of the audio data according to the corresponding audio data difference. Schematic diagram of the refinement process;

3 is a schematic flow chart of a second embodiment of a method for data synchronization between multi-channel wireless speakers according to the present invention;

4 is a schematic flow chart showing the steps of selecting a reference number in FIG. 3;

5 is a comparison of the audio data number of the audio data output position sent by the connected slave device in FIG. 3 with the reference number, obtaining a corresponding audio data difference value, and transmitting the corresponding audio data difference value to the corresponding one. Schematic diagram of the refinement process of the steps from the device;

6 is a schematic diagram of functional modules of a first embodiment of a system for data synchronization between multi-channel wireless speakers according to the present invention;

7 is a schematic diagram of a refinement function module of the adjustment module of FIG. 6;

8 is a schematic diagram of functional modules of a second embodiment of a system for data synchronization between multi-channel wireless speakers according to the present invention;

9 is a schematic diagram of a refinement function module of the selected module in FIG. 8;

FIG. 10 is a schematic diagram of a refinement function module of the comparison module in FIG. 8. FIG.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a method for data synchronization between multi-channel wireless speakers, which is applied to a slave device.

Referring to FIG. 1, FIG. 1 is a schematic flow chart of a first embodiment of a method for data synchronization between multi-channel wireless speakers according to the present invention.

In this embodiment, the method includes:

Step S110: After successfully connecting with the master device, send an audio data request for acquiring the corresponding channel to the master device.

In this embodiment, the slave device is a wireless speaker, and the number of the wireless speakers may be two or more; the master device may be a smart TV or a set top box. To ensure that the embodiment can be implemented normally, it is first necessary to connect the slave devices of the master device to the power source and then turn on the power. The master device is monitored. When the message "host is running" is monitored, if the current slave device is not connected to the master device, a request to connect with the master device is issued. After the connection is successful, a request to obtain audio data currently from the corresponding channel of the device is sent to the master device.

Step S120: Receive audio data of a corresponding channel sent by the master device, and receive broadcast information of the current output location and corresponding number of the slave device audio data sent by the master device.

After transmitting the request for acquiring the audio data of the current channel from the device to the master device, receiving audio data of the corresponding channel from the master device, and receiving the current output position of the slave device audio data sent by the master device and corresponding Numbered broadcast information.

Step S130: Send the current output position of the audio data and the corresponding number to the master device according to the broadcast information.

Upon receiving the broadcast information of the current output position of the slave device audio data and the corresponding number sent by the master device, the current output position and the corresponding number of the audio data are transmitted to the master device according to the broadcast information.

Step S140: Receive a corresponding audio data difference value calculated by the primary device by using a current output position of the audio data and a corresponding number, and adjust a current output position of the audio data according to the corresponding audio data difference.

After the master device calculates the current output position and the corresponding number of the audio data sent by the respective slave devices, the audio data difference values of the respective slave devices are obtained, and the audio data difference values are sent to the respective slave devices. The audio data difference value is received from the device, and the current audio data output position is adjusted according to the audio data difference value. Thereby, data synchronization output between the respective slave devices is realized.

In this embodiment, after the connection with the master device is successful, the audio data request for acquiring the corresponding channel is sent to the master device; the audio data of the corresponding channel sent by the master device is received, and the acquisition received by the master device is received. The current output position of the device audio data and the broadcast information of the corresponding number; sending the current output position and the corresponding number of the audio data to the main device according to the broadcast information; and receiving the calculation of the current output position and the corresponding number of the audio data by the main device Corresponding audio data difference value, and adjusting the current output position of the audio data according to the corresponding audio data difference value. In the above manner, the connection request is first sent to the master device, and after the connection with the master device is successful, the audio data request for acquiring the corresponding channel is sent to the master device; and then the audio data of the corresponding channel sent by the master device is received, And receiving broadcast information of the current output location and the corresponding number of the slave device audio data sent by the master device; sending the current output location and the corresponding number of the audio data to the master device according to the broadcast information; and receiving the master device to pass the audio data Corresponding audio data difference calculated by the current output position and the corresponding number, and adjusting the current output position of the audio data according to the corresponding audio data difference. This enables simultaneous output with other wireless speakers.

Further, referring to FIG. 2, FIG. 2 is a corresponding audio data difference calculated by the host device through the current output position of the audio data and the corresponding number, and the audio data is compared according to the corresponding audio data difference. A detailed flow diagram of the steps of adjusting the current output position.

The first embodiment of the method for data synchronization between the multi-channel wireless speakers according to the present invention, the step S140 may include:

Step S141, determining whether the corresponding audio data difference is less than zero or greater than zero;

Step S142, if the corresponding audio data difference is less than zero, insert the corresponding audio data difference value into the current output position of the audio data;

Step S143, if the corresponding audio data difference is greater than zero, the audio data corresponding to the corresponding audio data difference value is deleted from the current output position of the audio data.

In this embodiment, when the corresponding audio data difference value is received, it is first determined whether the corresponding audio data difference value is less than zero or greater than zero, and if the corresponding audio data difference is less than zero, the current If the playback progress of the device is slower than the reference progress, the playback progress of the current slave device needs to be added to the corresponding audio data difference, so that the current playback progress of the slave device is consistent with the reference progress. If the corresponding audio data difference is greater than zero, it indicates that the current playback progress of the slave device is slower than the reference progress, and the current audio data difference of the current slave device needs to be deleted, so that the current slave device's playback progress and reference are made. The progress is the same.

The embodiment determines whether the corresponding audio data difference is less than zero or greater than zero; if the corresponding audio data difference is less than zero, inserting the corresponding audio data difference into the current output position of the audio data. And if the corresponding audio data difference is greater than zero, the audio data corresponding to the corresponding audio data difference value is deleted from the current output position of the audio data. Through the above manner, the audio data buffers of different channel audio output positions to the audio collection position are consistent in size, thereby realizing synchronization between wireless speakers of different channels.

The invention further provides a method for data synchronization between multi-channel wireless speakers, which is applied to a master device.

Referring to FIG. 3, FIG. 3 is a schematic flow chart of a second embodiment of a method for synchronizing data between multi-channel wireless speakers according to the present invention.

In this embodiment, the method includes:

Step S150, the audio collection module is started to perform audio data collection, and the audio data collected each time is numbered;

Step S160, after establishing a connection with the slave device that requests the connection, sending the audio data of the corresponding channel to the slave device with successful connection;

Step S170, when the number of successfully connected slave devices reaches a preset value, the information about the current output location of the device audio data and the corresponding audio data number is obtained and sent to the slave device with successful connection;

Step S180, after obtaining the current output position of the audio data sent by the connected slave device and the corresponding audio data number, selecting a reference number;

Step S190, comparing the audio data number of the audio data output location sent by the connected slave device with the reference number, obtaining a corresponding audio data difference value, and transmitting the corresponding audio data difference value to the corresponding slave device.

In this embodiment, before the audio collection module is started to perform audio data collection, after the main device is connected to the power source and powered on, the slave device may be notified that the host device is running through a cyclic broadcast manner. The time interval of the loop broadcast is T1. T1 can be set according to the specific audio output. Then start the audio collection module for audio data acquisition and number the audio data collected each time. The data numbers of different channels are collected at the same time to be unified. Then, the connection request of the slave device is received and connected with the slave device that issued the connection request, and the audio data of the corresponding channel after the numbering is transmitted to the slave device with successful connection. When the number of successfully connected slave devices reaches a preset value, a cyclic broadcast of the current output position of the device audio data and the corresponding audio data number is acquired and sent to the slave device. The value of the preset value is more than two, and the specific value may be set according to the number of slave devices that need to be synchronously output. When the number of connections reaches the preset value, the current output position of each slave device needs to be acquired, so that the loop broadcast of the current output position of the slave device audio data and the corresponding audio data number can be sent to the slave device with successful connection. . After obtaining the current output position of the audio data sent by the connected slave device and the corresponding audio data number, select the reference number. Then, the audio data number of the audio data output location sent by the connected slave device is compared with the reference number to obtain a corresponding audio data difference value, and the corresponding audio data difference value is sent to the corresponding slave device.

In this embodiment, the audio data collection module is started to perform audio data collection, and the audio data collected each time is numbered; after establishing a connection with the slave device that requests the connection, the audio data of the corresponding channel is sent to the slave device that is successfully connected; When the number of successfully connected slave devices reaches a preset value, information about the current output location of the device audio data and the corresponding audio data number is obtained and sent to the slave device that is successfully connected; and the current output of the audio data sent by the connected slave device is obtained. Position and corresponding audio data number, and select a reference number; compare the audio data number of the audio data output position sent by the connected slave device with the reference number to obtain a corresponding audio data difference, and the corresponding audio The data difference is sent to the corresponding slave device. In the above manner, the audio collection module is first started to perform audio data collection, and the audio data collected each time is numbered; then, the connection request of the slave device is received and connected with the slave device that issues the connection request, and the audio of the corresponding channel is received. The data is sent to the slave device with successful connection; when the number of slave devices that have successfully connected reaches the preset value, the loop broadcast of the current output location of the audio data of the device and the corresponding audio data number is obtained and sent to the slave device with successful connection; After the current output position of the audio data sent by the connected slave device and the corresponding audio data number, the reference number is selected; and the audio data number of the audio data output position sent by the connected slave device is compared with the reference number to obtain the corresponding audio. Data difference value, and the corresponding audio data difference value is sent to the corresponding slave device. In order to adjust the output position from the device.

Further, referring to FIG. 4, FIG. 4 is a schematic flowchart of the refinement of the steps of selecting the reference number in FIG.

The second embodiment of the method for data synchronization between the multi-channel wireless speakers according to the present invention, the step S180 may include:

Step S181, sorting the audio data numbers corresponding to the obtained audio data output positions;

Step S182, extracting an audio data number of a median of the audio data numbers corresponding to the audio data output position, and using the median audio data number as a reference number.

In this embodiment, after the audio data number corresponding to the acquired audio data output position, the audio data numbers corresponding to the acquired audio data output positions are first sorted, and then the audio data output positions are corresponding. The median audio data number in the audio data number is extracted, and the median audio data number is used as a reference number. In order to achieve data output synchronization of each slave device.

Further, referring to FIG. 5, FIG. 5 is a comparison of the audio data number of the audio data output position sent by the connected slave device in FIG. 3 with the reference number to obtain a corresponding audio data difference value, and the corresponding audio is obtained. A refinement flow diagram of the steps of sending data difference values to corresponding slave devices.

The second embodiment of the method for data synchronization between the multi-channel wireless speakers according to the present invention, the step S190 may include:

Step S191, subtracting the audio data number of the audio data output position sent by the connected slave device from the reference number to obtain a corresponding audio data difference value;

Step S192, if the corresponding audio data difference is greater than zero or less than zero, the corresponding audio data difference is sent to the corresponding slave device;

Step S193, if the corresponding audio data difference is equal to zero, the corresponding audio data difference value is ignored.

In this embodiment, after the reference number is selected, the audio data number of the audio data output position sent by the connected slave device is sequentially subtracted from the reference number to obtain a corresponding audio data difference value. If the corresponding audio data difference is greater than zero or less than zero, it indicates that the corresponding slave device has an inconsistent output position corresponding to the reference number, and needs to be adjusted, so the corresponding audio data difference needs to be sent to the corresponding From the device. If the corresponding audio data difference is equal to zero, it indicates that the corresponding slave device has the same output position as the device corresponding to the reference number, and no adjustment is needed, so the corresponding audio data difference equal to zero can be ignored.

The invention further provides a system for data synchronization between multi-channel wireless speakers, the system comprising a master device and a slave device.

Referring to FIG. 6, FIG. 6 is a schematic diagram of functional modules of a first embodiment of a system for data synchronization between multi-channel wireless speakers according to the present invention.

In this embodiment, the slave device includes:

The first sending module 110 is configured to send an audio data request for acquiring a corresponding channel to the master device after the connection with the master device is successful.

The first receiving module 120 is configured to receive audio data of a corresponding channel sent by the master device, and receive broadcast information that is sent by the master device to obtain a current output location of the slave device audio data and a corresponding number.

After transmitting the request for acquiring the audio data of the current slave device corresponding channel to the master device, the audio data of the corresponding channel from the master device is received, and the broadcast information for acquiring the current output position of the slave device audio data and the corresponding number is received.

The second sending module 130 is configured to send the current output location and the corresponding number of the audio data to the master device according to the broadcast information.

The adjustment module 140 is configured to receive a corresponding audio data difference calculated by the primary device by using a current output position of the audio data and a corresponding number, and adjust the current output position of the audio data according to the corresponding audio data difference.

After the master device calculates the current output position and the corresponding number of the audio data sent by the respective slave devices, the audio data difference values of the respective slave devices are obtained, and the audio data difference values are sent to the respective slave devices. The audio data difference value is received from the device, and the current audio data output position is adjusted according to the audio data difference value. Thereby achieving a synchronous output between the respective slave devices.

In this embodiment, after the connection with the master device is successful, the audio data request for acquiring the corresponding channel is sent to the master device; the audio data of the corresponding channel sent by the master device is received, and the acquisition received by the master device is received. The current output position of the device audio data and the broadcast information of the corresponding number; the current output position and the corresponding number of the audio data are sent to the main device according to the broadcast information; and the corresponding calculation is performed by the main device through the current output position of the audio data and the corresponding number The audio data difference value, and adjusting the current output position of the audio data according to the corresponding audio data difference value. In the above manner, the connection request is first sent to the master device, and after the connection with the master device is successful, the audio data request for acquiring the corresponding channel is sent to the master device; and then the audio data of the corresponding channel sent by the master device is received, And receiving the broadcast information of the current output position and the corresponding number of the audio data of the slave device sent by the master device; transmitting the current output location and the corresponding number of the audio data to the master device; receiving the current output location and corresponding information of the master device through the audio data And calculating a corresponding audio data difference value, and adjusting a current output position of the audio data according to the corresponding audio data difference value. This enables simultaneous output with other wireless speakers.

Further, referring to FIG. 7, FIG. 7 is a schematic diagram of a refinement function module of the adjustment module in FIG. 6.

Based on the first embodiment of the system for data synchronization between the multi-channel wireless speakers of the present invention, the adjustment module 140 may include:

The determining unit 141 is configured to determine whether the corresponding audio data difference is less than zero or greater than zero;

The inserting unit 142 is configured to insert the corresponding audio data difference value into the current output position of the audio data if the corresponding audio data difference value is less than zero;

The deleting unit 143 is configured to delete the audio data corresponding to the corresponding audio data difference value from the current output position of the audio data, if the corresponding audio data difference value is greater than zero.

In this embodiment, when the corresponding audio data difference value is received, it is first determined that the corresponding audio data difference value is less than zero or greater than zero, and if the corresponding audio data difference is less than zero, the current slave device is The playback progress is slower than the reference progress, and the playback progress of the current slave device needs to be added to the corresponding audio data difference, so that the current playback progress of the slave device is consistent with the reference progress. If the corresponding audio data difference is greater than zero, it indicates that the current playback progress of the slave device is slower than the reference progress, and the current audio data difference of the current slave device needs to be deleted, so that the current slave device's playback progress and reference are made. The progress is the same.

The embodiment determines whether the corresponding audio data difference is less than zero or greater than zero; if the corresponding audio data difference is less than zero, inserting the corresponding audio data difference into the current output position of the audio data. And if the corresponding audio data difference is greater than zero, the audio data corresponding to the corresponding audio data difference value is deleted from the current output position of the audio data. Through the above manner, the audio data buffers of the audio output positions of different channels to the audio collection position are consistent in size, thereby realizing data synchronization between the wireless speakers of different channels.

Further, referring to FIG. 8, FIG. 8 is a schematic diagram of functional modules of a second embodiment of a system for data synchronization between multi-channel wireless speakers according to the present invention.

In this embodiment, the master device includes:

The startup module 150 is configured to start an audio collection module for audio data collection, and number the audio data collected each time;

The third sending module 160 is configured to: after establishing a connection with the slave device that requests the connection, send the audio data of the corresponding channel to the slave device that is successfully connected;

The fourth sending module 170 is configured to: when the number of the successfully connected slave devices reaches a preset value, send information about the current output location of the device audio data and the corresponding audio data number to the slave device that is successfully connected;

The selecting module 180 is configured to obtain a current output position of the audio data sent by the connected slave device and a corresponding audio data number, and select a reference number;

The comparison module 190 is configured to compare the audio data number of the audio data output location sent by the connected slave device with the reference number, obtain a corresponding audio data difference value, and send the corresponding audio data difference value to the corresponding From the device.

In this embodiment, the audio data collection module is started to perform audio data collection, and the audio data collected each time is numbered; after establishing a connection with the slave device that requests the connection, the audio data of the corresponding channel is sent to the slave device that is successfully connected; When the number of successfully connected slave devices reaches a preset value, information about the current output location of the device audio data and the corresponding audio data number is obtained and sent to the slave device that is successfully connected; and the current output of the audio data sent by the connected slave device is obtained. Position and corresponding audio data number, and select a reference number; compare the audio data number of the audio data output position sent by the connected slave device with the reference number to obtain a corresponding audio data difference, and the corresponding audio The data difference is sent to the corresponding slave device. In the above manner, the audio collection module is first started to perform audio data collection, and the audio data collected each time is numbered; then, the connection request of the slave device is received and connected with the slave device that issues the connection request, and the audio of the corresponding channel is received. The data is sent to the slave device with successful connection; when the number of slave devices that have successfully connected reaches the preset value, the loop broadcast of the current output location of the audio data of the device and the corresponding audio data number is obtained and sent to the slave device with successful connection; After the current output position of the audio data sent by the connected slave device and the corresponding audio data number, the reference number is selected; and the audio data number of the audio data output position sent by the connected slave device is compared with the reference number to obtain the corresponding audio. The data difference value is sent to the corresponding slave device. In order to adjust the output position from the device.

Further, referring to FIG. 9, FIG. 9 is a schematic diagram of a refinement function module of the selected module in FIG.

Based on the second embodiment of the system for data synchronization between the multi-channel wireless speakers of the present invention, the selection module 180 may include:

a sorting unit 181, configured to sort the audio data numbers corresponding to the obtained audio data output locations;

The extracting unit 182 is configured to extract an audio data number of a median of the audio data numbers corresponding to the audio data output position, and use the audio data number of the median as a reference number.

Further, referring to FIG. 10, FIG. 10 is a schematic diagram of a refinement function module of the comparison module in FIG.

Based on the second embodiment of the system for data synchronization between the multi-channel wireless speakers of the present invention, the comparison module 190 can include:

The subtraction unit 191 is configured to subtract the audio data number of the audio data output location sent by the connected slave device from the reference number to obtain a corresponding audio data difference value;

The sending unit 192 is configured to: if the corresponding audio data difference is greater than zero or less than zero, send the corresponding audio data difference to the corresponding slave device;

The ignoring unit 193 is configured to ignore the corresponding audio data difference value if the corresponding audio data difference value is equal to zero.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A method for data synchronization between multi-channel wireless speakers is applied to a slave device, characterized in that the method comprises the following steps:

After successfully connecting with the master device, the audio data request for acquiring the corresponding channel is sent to the master device;

Receiving audio data of the corresponding channel sent by the master device, and receiving broadcast information of the current output location of the slave device audio data and the corresponding number sent by the master device;

Transmitting, according to the broadcast information, a current output location of the audio data and a corresponding number to the master device;

Receiving, by the master device, a corresponding audio data difference calculated by using a current output position of the audio data and a corresponding number, and adjusting a current output position of the audio data according to the corresponding audio data difference.
The method of data synchronization between multi-channel wireless speakers according to claim 1, wherein the step of adjusting the current output position of the audio data according to the corresponding audio data difference comprises:

And inserting or deleting the corresponding audio data difference value according to the corresponding audio data difference value.
The method for synchronizing data between multi-channel wireless speakers according to claim 2, wherein said inserting or deleting a corresponding audio data difference value according to said corresponding audio data difference value The steps include:

Determining whether the corresponding audio data difference is less than zero or greater than zero;

If the corresponding audio data difference is less than zero, insert the corresponding audio data difference value into the current output position of the audio data;

If the corresponding audio data difference is greater than zero, the audio data corresponding to the corresponding audio data difference value is deleted from the current output position of the audio data.
A method for data synchronization between multi-channel wireless speakers is applied to a master device, and the method includes:

Start the audio collection module to collect audio data, and number the audio data collected each time;

After establishing a connection with the slave device requesting the connection, the audio data of the corresponding channel is sent to the slave device with successful connection;

When the number of successfully connected slave devices reaches a preset value, information about the current output location of the device audio data and the corresponding audio data number is obtained and sent to the slave device with successful connection;

Obtaining the current output position of the audio data sent by the connected slave device and the corresponding audio data number, and selecting a reference number;

Comparing the audio data number of the audio data output location sent by the connected slave device with the reference number, obtaining a corresponding audio data difference value, and transmitting the corresponding audio data difference value to the corresponding slave device.
The method for synchronizing data between multi-channel wireless speakers according to claim 4, wherein the step of selecting a reference number comprises:

Sorting the audio data numbers corresponding to the obtained audio data output positions;

And extracting an audio data number of a median of the audio data numbers corresponding to the audio data output position, and using the median audio data number as a reference number.
The method for synchronizing data between multi-channel wireless speakers according to claim 4, wherein the step of starting the audio collection module to perform audio data collection and numbering each of the collected audio data further comprises:

Connect the master device to the power source and turn it on, and notify the slave device that the master device is running through cyclic broadcast.
The method for synchronizing data between multi-channel wireless speakers according to claim 4, wherein the audio data number of the audio data output position sent by the connected slave device is compared with a reference number to obtain a corresponding And the step of transmitting the corresponding audio data difference value to the corresponding slave device includes:

And subtracting the audio data number of the audio data output location sent by the connected slave device with the reference number to obtain a corresponding audio data difference value;

And if the corresponding audio data difference is greater than zero or less than zero, sending the corresponding audio data difference to the corresponding slave device;

If the corresponding audio data difference is equal to zero, the corresponding audio data difference value is ignored.
The method for synchronizing data between multi-channel wireless speakers according to claim 5, wherein the audio data number of the audio data output position sent by the connected slave device is compared with a reference number to obtain a corresponding And the step of transmitting the corresponding audio data difference value to the corresponding slave device includes:

And subtracting the audio data number of the audio data output location sent by the connected slave device with the reference number to obtain a corresponding audio data difference value;

And if the corresponding audio data difference is greater than zero or less than zero, sending the corresponding audio data difference to the corresponding slave device;

If the corresponding audio data difference is equal to zero, the corresponding audio data difference value is ignored.
A system for data synchronization between multi-channel wireless speakers, the system comprising a master device and a slave device, wherein the slave device comprises:

a first sending module, configured to send an audio data request for acquiring a corresponding channel to the master device after the connection with the master device is successful;

a first receiving module, configured to receive audio data of a corresponding channel sent by the master device, and receive broadcast information that is sent by the master device to obtain a current output location of the slave device audio data and a corresponding number;

a second sending module, configured to send, according to the broadcast information, a current output location of the audio data and a corresponding number to the master device;

The adjusting module is configured to receive a corresponding audio data difference calculated by the primary device by using a current output position of the audio data and a corresponding number, and adjust the current output position of the audio data according to the corresponding audio data difference.
The system for synchronizing data between multi-channel wireless speakers according to claim 9, wherein the adjustment module is further configured to:

And inserting or deleting the corresponding audio data difference value according to the corresponding audio data difference value.
The system for synchronizing data between multi-channel wireless speakers according to claim 10, wherein the adjustment module comprises:

a determining unit, configured to determine whether the corresponding audio data difference is less than zero or greater than zero;

An insertion unit, configured to insert the corresponding audio data difference value into a current output position of the audio data if the corresponding audio data difference value is less than zero;

a deleting unit, configured to delete audio data corresponding to the corresponding audio data difference value from a current output position of the audio data, if the corresponding audio data difference value is greater than zero.
A system for data synchronization between multi-channel wireless speakers, the system comprising a master device and a slave device, wherein the master device comprises:

The startup module is configured to start an audio collection module for audio data collection, and number the audio data collected each time;

a third sending module, configured to send audio data of the corresponding channel to the slave device that is successfully connected after establishing a connection with the slave device that requests the connection;

The fourth sending module is configured to: when the number of the successfully connected slave devices reaches a preset value, send information about the current output location of the device audio data and the corresponding audio data number to the slave device that is successfully connected;

The selection module is configured to obtain a current output position of the audio data sent by the connected slave device and a corresponding audio data number, and select a reference number;

a comparison module, configured to compare an audio data number of the audio data output location sent by the connected slave device with a reference number, obtain a corresponding audio data difference value, and send the corresponding audio data difference value to the corresponding slave device.
The system for synchronizing data between multi-channel wireless speakers according to claim 12, wherein the selection module comprises:

a sorting unit, configured to sort the audio data numbers corresponding to the obtained audio data output locations;

And an extracting unit, configured to extract an audio data number of a median of the audio data numbers corresponding to the audio data output position, and use the median audio data number as a reference number.
The system of data synchronization between multi-channel wireless speakers of claim 12, wherein the system further comprises:

The notification module is configured to connect the main device to the power source and turn it on, and notify the slave device that the master device is in a running state by means of a cyclic broadcast.
The system for synchronizing data between multi-channel wireless speakers according to claim 12, wherein the comparison module comprises:

a subtracting unit, configured to subtract the audio data number of the audio data output location sent by the connected slave device from the reference number, to obtain a corresponding audio data difference value;

a sending unit, configured to send the corresponding audio data difference value to a corresponding slave device if the corresponding audio data difference is greater than zero or less than zero;

The ignoring unit is configured to ignore the corresponding audio data difference value if the corresponding audio data difference is equal to zero.
The system for synchronizing data between multi-channel wireless speakers according to claim 13, wherein the comparison module comprises:

a subtracting unit, configured to subtract the audio data number of the audio data output location sent by the connected slave device from the reference number, to obtain a corresponding audio data difference value;

a sending unit, configured to send the corresponding audio data difference value to a corresponding slave device if the corresponding audio data difference is greater than zero or less than zero;

The ignoring unit is configured to ignore the corresponding audio data difference value if the corresponding audio data difference is equal to zero.