CN106412625A - Multimedia synchronous playing method, device, terminal and system - Google Patents

Abstract

The present invention discloses a multimedia synchronous playback method, device, terminal and system, wherein the method comprises: the present invention obtains the actual data transmission rate corresponding to the transmission channel between the master device and the slave device and the average data transmission rate corresponding to the transmission channel, and adjusts the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to achieve synchronous playback of the master device and the slave device. During the synchronization process, the master device controls the data transmission rate with each slave device, controls the transmission delay between the master device and each slave device, and achieves synchronous playback control of each slave device. The master device does not need to perform complicated interactions with the slave device, thereby reducing the interaction pressure of the master device.

Description

Multimedia synchronous playing method, device, terminal and system

technical field

The present invention relates to the technical field of multimedia playback, in particular to a multimedia synchronous playback method, device, terminal and system.

Background technique

Multiple playback devices (such as mobile phones, computers, speakers, various players, etc.) are connected through wired or wireless network technology to form a multimedia synchronous playback system, which plays the same audio, video or picture synchronously, which has been widely used. Taking the multimedia synchronous playback system as an example, how to realize the synchronous playback of multiple playback devices, so that the sound or picture delay between multiple devices is as small as possible, so as to ensure the user's sense of hearing or visual consistency, this is multi-device synchronization Key technologies for playback.

For example, among multiple playback devices that realize synchronous playback, when the master device and other slave devices perform synchronous playback, they generally perform time synchronization before synchronous playback, and then the master device sends media data packets to the slave devices. Mark the playback time of the data packet in the data packet, and the slave device performs synchronous playback by matching the playback time of the data packet with the system time. However, in the process of synchronous playback, the main control device not only plays multimedia, but also packs and transmits media data packets. If there is too much data to be transmitted, it will easily cause network congestion and increase the operating burden of the main control device. , it is prone to delayed playback or freeze of the video or audio, resulting in the inability of the multiple playback devices to achieve synchronous playback, affecting user experience. Therefore, further improvement is required.

Contents of the invention

The purpose of the present invention is to provide a multimedia synchronous playback method, device, terminal and system, aiming at solving the problem of network congestion easily caused by too much data to be transmitted by the master control device in the multimedia synchronous playback system existing in the prior art, and making The operating burden of the main control device is increased, resulting in the technical problem that the multiple playback devices cannot realize synchronous playback.

In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:

A multimedia synchronous playing method, the method comprising:

Obtain the actual data transmission rate corresponding to the transmission channel between the master device and the slave device;

Obtain the average data transmission rate corresponding to the transmission channel;

Adjusting the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device.

In order to solve the above technical problems, embodiments of the present invention also provide the following technical solutions:

A multimedia synchronous playback device, said device comprising:

The first obtaining module is used to obtain the actual data transmission rate corresponding to the transmission channel between the master device and the slave device;

The second obtaining module is used to obtain the average data transmission rate corresponding to the transmission channel;

An adjustment module, configured to adjust the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device.

In order to solve the above technical problems, embodiments of the present invention also provide the following technical solutions:

A terminal, including: a memory and a processor, the processor is coupled to the memory, wherein the processor invokes the executable program code stored in the memory to execute the program described in any of the above-mentioned embodiments. method.

In order to solve the above technical problems, embodiments of the present invention also provide the following technical solutions:

A multimedia synchronous playback system, comprising a source device, a master control device and at least one slave device, wherein the master control device establishes a connection with the source device and the slave device through a network, and the master control device is used to receive The multimedia data sent by the source device is used to synchronize the received multimedia data to the slave device, and the system is implemented by any of the above methods.

Compared with the prior art, the present invention obtains the actual data transmission rate corresponding to the transmission channel between the master device and the slave device and the average data transmission rate corresponding to the transmission channel, and according to the actual data transmission rate and the average The data transmission rate is to adjust the data transmission rate of the transmission channel, so as to realize the synchronous playback between the master device and the slave device. In the synchronization process, the master control device controls the data transmission rate with each slave device, and then controls the transmission delay between the master control device and each slave device, and realizes the synchronous playback regulation of each slave device, and the master control device does not need to communicate with the slave devices. Perform complex information interaction and reduce the interaction pressure of the main control device.

Description of drawings

The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

FIG. 1 is a schematic flowchart of a multimedia synchronous playback method provided by a first embodiment of the present invention.

FIG. 2 is a schematic flowchart of a multimedia synchronous playback method provided by the second embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a multimedia synchronous playback device provided by a third embodiment of the present invention.

FIG. 4 is another schematic structural diagram of a multimedia synchronous playback device provided by the third embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a terminal provided by a fourth embodiment of the present invention.

FIG. 6 is a schematic diagram of an operating environment of a multimedia synchronous playback system provided by a fifth embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The terms "first", "second" and "third" in the present invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

The execution subject of a kind of multimedia synchronous playing method provided by the embodiment of the present invention can be a kind of multimedia synchronous playing device provided by the embodiment of the present invention, or the mobile terminal (such as desktop computer, notebook, Pocket computer, tablet computer, smart TV, smart phone, smart speaker, or wearable device with playback function, etc.), the multimedia synchronous playback device can be implemented in hardware or software.

It can be understood that the method described in this embodiment can be applied to an intelligent playback device or a multimedia synchronous playback system. Preferably, the multimedia synchronous playing system may include a source device and multiple playing devices. Wherein, the plurality of playback devices may include a master device and at least one slave device. Wherein, the source device may be used to provide media data to multiple playback devices, so that multiple playback devices perform synchronous playback; or the source device may be used to provide media data to a master control device in the playback devices, The master control device then synchronizes the received media data to the slave devices in the playback device, so as to realize synchronous multimedia playback.

first embodiment

Please refer to FIG. 1 . FIG. 1 is a schematic flowchart of a multimedia synchronous playback method provided by a first embodiment of the present invention. The methods include:

Step S101, acquiring an actual data transmission rate corresponding to a transmission channel between a master device and a slave device.

It can be understood that the method described in this embodiment mainly describes a playback group composed of multiple playback devices in a multimedia synchronous playback system. Wherein, in the playback group, multiple playback devices are connected through wired transmission or wireless transmission to form a private network environment. Wherein, the wireless transmission mode may be infrared, bluetooth, WiFi (Wireless Fidelity, wireless local area network), hotspot network, and the like. The private network environment can be connected to one or more routers, and then connected to the Internet through the routers, so that one or more playback devices in the private network environment can directly access the Internet or source devices to obtain multimedia resources.

Wherein, the plurality of playback devices may include a master device and at least one slave device. In general, the main control device in the playback device can be installed with an application program APP for controlling the multimedia synchronous playback system, and the playback device in the system can be managed through the application program APP, including setting and adjusting the device , Create playlists, obtain multimedia resources, control playback status, etc.

Wherein, the master control device may be a notebook, a handheld computer, a tablet computer, a smart phone, etc., and the slave device may be a smart phone, a smart speaker, a smart TV, a multimedia screen, and the like.

It can be understood that the master device establishes a transmission channel with each slave device based on a communication network protocol, and the transmission channel is used for the master device to transmit media data to the slave devices. In the process of media data transmission, the leading device can package the media data according to a certain unit, for example, package the media data according to the data size and media frame contained in a unit time.

When starting to play, the master control device sends media data to all slave devices for synchronous playback. It can be understood that multiple playback devices play while buffering, and the media data played is equal to the buffered media data. For example, the main control device tests the upper limit of its own network transmission bandwidth, and reserves a part of the bandwidth as a margin for later adjustments, distributes the remaining bandwidth equally to each transmission channel, and sets a speed limit. For example: there are 4 slave devices in total, the total transmission bandwidth of the master device is 80Mb/s, and 20Mb/s bandwidth is reserved for adjustment, so the data transmission rate of each slave device is 15Mb/s.

After the start of data transmission, as time goes by, there may be transmission delays between the slave devices, and the actual data transmission rate of each transmission channel is counted separately. Wherein, the actual data transmission rate is the current actually detected data transmission rate.

For example, for a 30Mb data packet, the actual transmission time of slave device A is 2s, the actual transmission time of slave device B is 1.5s, the actual transmission time of slave device C is 2.5s, and the actual transmission time of slave device D is 2s. Then it can be calculated that the data transfer rate of slave device A is 15Mb/s, the data transfer rate of slave device B is 20Mb/s, the data transfer rate of slave device C is 12Mb/s, and the data transfer rate of slave device D is 15Mb/s s.

Step S102, acquiring the average data transmission rate corresponding to the transmission channel.

For example, according to the actual data transmission rate of the transmission channel with each slave device, the average data transmission rate corresponding to the transmission channel can be calculated, for example, the average data transmission rate corresponding to the transmission channel is 15Mb/s.

Step S103, adjusting the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device.

For example, the data transfer rate of slave device A is 15Mb/s, the data transfer rate of slave device B is 20Mb/s, the data transfer rate of slave device C is 12Mb/s, and the data transfer rate of slave device D is 15Mb/s, It can be seen that it is necessary to adjust the data transmission rate of the transmission channel corresponding to the slave device B and the slave device C to compensate for the transmission delay occurring during the transmission process. For example, adjust the data transmission rate of slave device B from 20Mb/s to 15Mb/s, and adjust the data transmission rate of slave device C from 12Mb/s to 15Mb/s, so as to realize the synchronous playback between the master device and the slave device .

For example, the data transmission rate of the transmission channel may be adjusted according to the actual data transmission rate and the variance of the average data transmission rate. Alternatively, the data transmission rate of each transmission channel may be adjusted directly according to the variance between the unit transmission duration of the unit data packet of each transmission channel and the average unit transmission duration. The smaller the variance, the more stable the data transmission rate and the smaller the transmission delay.

It is understandable that after a certain number of data packets are transmitted, such as 1000 data packets, the average data transmission rate or the average unit transmission time is no longer used as the control benchmark of the data transmission rate, but is selected from each transmission channel. The actual transmission rate or unit transmission time corresponding to the transmission channel with the smallest variance is used as the control benchmark of the data transmission rate, so as to achieve the purpose of intelligent dynamic adjustment.

In this embodiment, by obtaining the actual data transmission rate corresponding to the transmission channel between the master device and the slave device and the average data transmission rate corresponding to the transmission channel, according to the actual data transmission rate and the average data transmission rate, adjust The data transmission rate of the transmission channel is used to realize synchronous playback between the master device and the slave device. In the synchronization process, the master control device controls the data transmission rate with each slave device, and then controls the transmission delay between the master control device and each slave device, and realizes the synchronous playback regulation of each slave device, and the master control device does not need to communicate with the slave devices. Perform complex information interaction and reduce the interaction pressure of the main control device.

second embodiment

Please also refer to FIG. 2 . FIG. 2 is a schematic flowchart of a multimedia synchronous playback method provided by the second embodiment of the present invention. The methods include:

Step S201, acquiring the actual data transmission rate corresponding to the transmission channel between the master device and the slave device.

It can be understood that the master device establishes a transmission channel with each slave device based on a communication network protocol, and the transmission channel is used for the master device to transmit media data to the slave devices. In the process of media data transmission, the leading device can package the media data according to a certain unit, for example, package the media data according to the data size and media frame contained in a unit time.

When starting to play, the master control device sends media data to all slave devices for synchronous playback. It can be understood that multiple playback devices play while buffering, and the media data played is equal to the buffered media data. For example, the main control device tests the upper limit of its own network transmission bandwidth, and reserves a part of the bandwidth as a margin for later adjustments, distributes the remaining bandwidth equally to each transmission channel, and sets a speed limit. For example: there are 4 slave devices in total, the total transmission bandwidth of the master device is 80Mb/s, and 20Mb/s bandwidth is reserved for adjustment, so the data transmission rate of each slave device is 15Mb/s.

After the start of data transmission, as time goes by, there may be transmission delays between the slave devices, and the actual data transmission rate of each transmission channel is counted separately. Wherein, the actual data transmission rate is the current actually detected data transmission rate.

For example, for a 30Mb data packet, the actual transmission time of slave device A is 2s, the actual transmission time of slave device B is 1.5s, the actual transmission time of slave device C is 2.5s, and the actual transmission time of slave device D is 2s. Then it can be calculated that the data transfer rate of slave device A is 15Mb/s, the data transfer rate of slave device B is 20Mb/s, the data transfer rate of slave device C is 12Mb/s, and the data transfer rate of slave device D is 15Mb/s s.

Step S202, acquiring the average data transmission rate corresponding to the transmission channel.

For example, according to the actual data transmission rate of the transmission channel with each slave device, the average data transmission rate corresponding to the transmission channel can be calculated, for example, the average data transmission rate corresponding to the transmission channel is 15Mb/s.

Step S203, adjusting the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device.

Preferably, the step S203 can be realized through steps S2031 to S2032, specifically:

Step S2031, when the actual data transmission rate is lower than the average data transmission rate, increase the data transmission rate of the transmission channel, so as to realize synchronous playback between the master device and the slave device.

For example, the data transfer rate of slave device A is 15Mb/s, the data transfer rate of slave device B is 20Mb/s, the data transfer rate of slave device C is 12Mb/s, and the data transfer rate of slave device D is 15Mb/s, It can be seen that the transmission of the slave device C is slow during the transmission process, which means that the slave device C is playing slower than other devices. At this time, the data transmission rate of the slave device C needs to be adjusted from 12Mb/s to 15Mb/s, so as to realize synchronous playback between the master device and the slave device C.

In some implementation manners, the ratio of the difference between the average data transmission rate and the actual data transmission rate to the average data transmission rate may be used as an increase ratio to increase the data transmission rate of the transmission channel.

Step S2032, when the actual data transmission rate is greater than the average data transmission rate, reduce the data transmission rate of the transmission channel, so as to realize synchronous playback between the master device and the slave device.

For example, the data transfer rate of slave device A is 15Mb/s, the data transfer rate of slave device B is 20Mb/s, the data transfer rate of slave device C is 12Mb/s, and the data transfer rate of slave device D is 15Mb/s, It can be seen that the slave device B has a faster transmission during the transmission process, which means that the slave device B is playing faster than other devices. At this time, the data transmission rate of the slave device B needs to be adjusted from 20Mb/s to 15Mb/s, so as to realize the synchronous playback between the master device and the slave device B.

In some embodiments, the ratio of the difference between the actual data transmission rate and the average data transmission rate to the average data transmission rate is used as a reduction ratio to reduce the data transmission rate of the transmission channel.

In this embodiment, by obtaining the actual data transmission rate corresponding to the transmission channel between the master device and the slave device and the average data transmission rate corresponding to the transmission channel, according to the actual data transmission rate and the average data transmission rate, adjust The data transmission rate of the transmission channel is used to realize synchronous playback between the master device and the slave device. In the synchronization process, the master control device controls the data transmission rate with each slave device, and then controls the transmission delay between the master control device and each slave device, and realizes the synchronous playback regulation of each slave device, and the master control device does not need to communicate with the slave devices. Perform complex information interaction and reduce the interaction pressure of the main control device.

third embodiment

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of a multimedia synchronous playback device provided by a third embodiment of the present invention. The multimedia synchronous playing device 30 includes a first acquisition module 31 , a second acquisition module 32 , and an adjustment module 33 .

Wherein, the first obtaining module 31 is configured to obtain the actual data transmission rate corresponding to the transmission channel between the master device and the slave device.

It can be understood that the master device establishes a transmission channel with each slave device based on a communication network protocol, and the transmission channel is used for the master device to transmit media data to the slave devices. In the process of media data transmission, the leading device can package the media data according to a certain unit, for example, package the media data according to the data size and media frame contained in a unit time.

When starting to play, the master control device sends media data to all slave devices for synchronous playback. It can be understood that multiple playback devices play while buffering, and the media data played is equal to the buffered media data. For example, the main control device tests the upper limit of its own network transmission bandwidth, and reserves a part of the bandwidth as a margin for later adjustments, distributes the remaining bandwidth equally to each transmission channel, and sets a speed limit. For example: there are 4 slave devices in total, the total transmission bandwidth of the master device is 80Mb/s, and 20Mb/s bandwidth is reserved for adjustment, so the data transmission rate of each slave device is 15Mb/s.

After starting to transmit data, as time goes by, there may be a transmission delay between the slave devices, then the first acquisition module 31 makes statistics on the actual data transmission rate of each transmission channel to obtain the master device The actual data transfer rate of the transfer channel to and from the slave.

Wherein, the second acquiring module 32 is configured to acquire the average data transmission rate corresponding to the transmission channel.

For example, the second acquisition module 32 can acquire the average data transmission rate corresponding to the transmission channel according to the actual data transmission rate of the transmission channel with each slave device, such as the average data transmission rate corresponding to the transmission channel It is 15Mb/s.

The adjustment module 33 is configured to adjust the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device.

For example, the adjustment module 33 may adjust the data transmission rate of the transmission channel according to the actual data transmission rate and the variance of the average data transmission rate. Alternatively, the adjustment module 33 may directly adjust the data transmission rate of each transmission channel according to the variance between the unit transmission duration of the unit data packet of each transmission channel and the average unit transmission duration. The smaller the variance, the more stable the data transmission rate and the smaller the transmission delay.

It is understandable that after a certain number of data packets are transmitted, such as 1000 data packets, the average data transmission rate or the average unit transmission time is no longer used as the control benchmark of the data transmission rate, but is selected from each transmission channel. The actual transmission rate or unit transmission time corresponding to the transmission channel with the smallest variance is used as the control benchmark of the data transmission rate, so as to achieve the purpose of intelligent dynamic adjustment.

Please also refer to FIG. 4 . FIG. 4 is another structural diagram of a multimedia synchronous playback device provided by the third embodiment of the present invention. The multimedia synchronous playing device 30 includes a first acquisition module 31 , a second acquisition module 32 , and an adjustment module 33 .

Wherein, the first obtaining module 31 is configured to obtain the actual data transmission rate corresponding to the transmission channel between the master device and the slave device.

It can be understood that the master device establishes a transmission channel with each slave device based on a communication network protocol, and the transmission channel is used for the master device to transmit media data to the slave devices. In the process of media data transmission, the leading device can package the media data according to a certain unit, for example, package the media data according to the data size and media frame contained in a unit time.

When starting to play, the master control device sends media data to all slave devices for synchronous playback. It can be understood that multiple playback devices play while buffering, and the media data played is equal to the buffered media data. For example, the main control device tests the upper limit of its own network transmission bandwidth, and reserves a part of the bandwidth as a margin for later adjustments, distributes the remaining bandwidth equally to each transmission channel, and sets a speed limit. For example: there are 4 slave devices in total, the total transmission bandwidth of the master device is 80Mb/s, and 20Mb/s bandwidth is reserved for adjustment, so the data transmission rate of each slave device is 15Mb/s.

After starting to transmit data, as time goes by, there may be a transmission delay between the slave devices, then the first acquisition module 31 makes statistics on the actual data transmission rate of each transmission channel to obtain the master device The actual data transfer rate of the transfer channel to and from the slave.

Wherein, the second acquiring module 32 is configured to acquire the average data transmission rate corresponding to the transmission channel.

For example, the second acquisition module 32 can acquire the average data transmission rate corresponding to the transmission channel according to the actual data transmission rate of the transmission channel with each slave device, such as the average data transmission rate corresponding to the transmission channel It is 15Mb/s.

The adjustment module 33 further includes a first adjustment unit 331 and a second adjustment unit 332 .

Wherein, preferably, the first adjusting unit 331 is configured to increase the data transmission rate of the transmission channel when the actual data transmission rate is lower than the average data transmission rate, so as to realize the communication between the main control device and the Synchronized playback of slave devices.

In some implementations, the first adjustment unit 331 is configured to use the ratio of the difference between the average data transmission rate and the actual data transmission rate to the average data transmission rate as an increase ratio to increase the The data transfer rate of the transport channel.

Preferably, the second adjustment unit 332 is configured to reduce the data transmission rate of the transmission channel when the actual data transmission rate is greater than the average data transmission rate, so as to realize the connection between the master device and the slave device synchronized playback.

In some implementations, the second adjustment unit 332 is configured to use the ratio of the difference between the actual data transmission rate and the average data transmission rate to the average data transmission rate as a reduction ratio to reduce the The data transfer rate of the transport channel.

Fourth embodiment

An embodiment of the present invention also provides a terminal, as shown in FIG. 5 , which is a schematic structural diagram of a terminal provided by a fourth embodiment of the present invention. The terminal 400 may include a radio frequency (RF, Radio Frequency) circuit 401, a memory 402 including one or more computer-readable storage media, an input unit 403, a display unit 404, a sensor 405, an audio circuit 406, a wireless fidelity (WiFi , Wireless Fidelity) module 407, including a processor 408 with one or more processing cores, and a power supply 409 and other components. Those skilled in the art can understand that the terminal structure shown in FIG. 5 does not constitute a limitation on the terminal, and may include more or less components than those shown in the figure, or combine some components, or arrange different components.

The radio frequency circuit 401 can be used to send and receive information, or to receive and send signals during a call. In particular, after receiving the downlink information from the base station, it is processed by one or more processors 408; in addition, the uplink data is sent to the base station . Generally, the radio frequency circuit 401 includes but is not limited to an antenna, at least one amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM, Subscriber Identity Module) card, a transceiver, a coupler, a low noise amplifier (LNA, Low Noise Amplifier), duplexer, etc. In addition, the radio frequency circuit 401 can also communicate with the network and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to Global System for Mobile Communications (GSM, Global System of Mobile communication), General Packet Radio Service (GPRS, General Packet Radio Service), Code Division Multiple Access (CDMA, Code Division Multiple Access), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), Long Term Evolution (LTE, Long Term Evolution), email, Short Message Service (SMS, Short Messaging Service), etc.

Memory 402 may be used to store applications and data. The application programs stored in the memory 402 include executable program codes. Applications can be composed of various functional modules. The processor 408 executes various functional applications and data processing by running the application programs stored in the memory 402 . The memory 402 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as a sound playback function, an image playback function, etc.); Data created by the use of the terminal (such as audio data, phonebook, etc.) and the like. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices. Correspondingly, the memory 402 may further include a memory controller to provide the processor 408 and the input unit 403 with access to the memory 402 .

The input unit 403 can be used to receive input numbers, character information or user characteristic information (such as fingerprints), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. Specifically, the input unit 403 may include a fingerprint identification module. In some embodiments, the input unit 403 may also include a touch-sensitive surface. A touch-sensitive surface, also known as a touch display or trackpad, collects user touch operations on or near it (for example, the user uses a finger, stylus, etc. any suitable object or accessory on the touch-sensitive surface or on the touch-sensitive Operation near the surface), and drive the corresponding connection device according to the preset program. Optionally, the touch-sensitive surface may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to the to the processor 408, and can receive and execute commands sent by the processor 408. In addition, touch-sensitive surfaces can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to touch-sensitive surfaces, the input unit 403 may also include other input devices. Specifically, other input devices may include, but are not limited to, one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 404 can be used to display information input by or provided to the user and various graphical user interfaces of the terminal. These graphical user interfaces can be composed of graphics, text, icons, videos and any combination thereof. The display unit 404 may include a display panel. Optionally, the display panel may be configured in the form of a liquid crystal display (LCD, Liquid Crystal Display), an organic light-emitting diode (OLED, Organic Light-Emitting Diode), or the like. Further, the touch-sensitive surface may cover the display panel, and when the touch-sensitive surface detects a touch operation on or near it, the touch operation is sent to the processor 408 to determine the type of the touch event, and then the processor 408 displays on the display according to the type of the touch event. The corresponding visual output is provided on the panel. Although in FIG. 5, the touch-sensitive surface and the display panel are used as two independent components to realize the input and input functions, in some embodiments, the touch-sensitive surface and the display panel can be integrated to realize the input and output functions.

The terminal may also include at least one sensor 405, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel according to the brightness of the ambient light, and the proximity sensor may turn off the display panel and/or the backlight when the terminal moves to the ear . As a kind of motion sensor, the gravitational acceleration sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used for applications that recognize the attitude of mobile phones (such as horizontal and vertical screen switching, related Games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; as for other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. repeat.

The audio circuit 406 can provide an audio interface between the user and the terminal through a speaker or a microphone. The audio circuit 406 can convert the received audio data into an electrical signal, transmit it to the speaker, and convert it into a sound signal output by the speaker; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is converted into The audio data, after being processed by the audio data output processor 408, is sent to another terminal through the radio frequency circuit 401, or the audio data is output to the memory 402 for further processing. The audio circuit 406 may also include an earplug jack to provide communication between an external earphone and the terminal.

Wireless Fidelity (WiFi) is a short-distance wireless transmission technology. The terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 407. It provides users with wireless broadband Internet access. Although Fig. 5 shows the Wi-Fi module 407, it can be understood that it is not an essential component of the terminal, and can be completely omitted as required without changing the essence of the invention.

The processor 408 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. By running or executing the application program stored in the memory 402 and calling the data stored in the memory 402, various functions of the terminal are executed. function and process data, so as to monitor the terminal as a whole. Optionally, the processor 408 may include one or more processing cores; preferably, the processor 408 may integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that the foregoing modem processor may not be integrated into the processor 408 .

The terminal also includes a power source 409 (such as a battery) for powering various components. Preferably, the power supply can be logically connected to the processor 408 through a power management system, so that functions such as charging, discharging, and power consumption management can be implemented through the power management system. The power supply 409 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

Although not shown in FIG. 5 , the terminal may also include a camera, a Bluetooth module, etc., which will not be repeated here.

Specifically, in this embodiment, the processor 408 in the terminal loads the executable program code corresponding to the process of one or more application programs into the memory 402 according to the following instructions, and the processor 408 executes the executable program code stored in the The application program in the memory 402 performs the following operations:

Obtain the actual data transmission rate corresponding to the transmission channel between the master device and the slave device;

Obtain the average data transmission rate corresponding to the transmission channel;

Adjusting the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device.

Preferably, the processor 408 is configured to adjust the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device, specifically include:

When the actual data transmission rate is lower than the average data transmission rate, increase the data transmission rate of the transmission channel to realize synchronous playback between the master device and the slave device.

Preferably, the processor 408 is used to increase the data transmission rate of the transmission channel, specifically including:

Taking the ratio of the difference between the average data transmission rate and the actual data transmission rate to the average data transmission rate as an increase ratio to increase the data transmission rate of the transmission channel.

Preferably, the processor 408 is configured to adjust the data transmission rate of the transmission channel according to the actual data transmission rate and the average data transmission rate, so as to realize synchronous playback between the master device and the slave device, specifically include:

When the actual data transmission rate is greater than the average data transmission rate, reduce the data transmission rate of the transmission channel, so as to realize synchronous playback between the master device and the slave device.

Preferably, the processor 408 is used to reduce the data transmission rate of the transmission channel, specifically including:

Taking the ratio of the difference between the actual data transmission rate and the average data transmission rate to the average data transmission rate as a reduction ratio to reduce the data transmission rate of the transmission channel.

fifth embodiment

Please refer to FIG. 6 . FIG. 6 is a schematic diagram of an operating environment of a multimedia synchronous playback system provided by a fifth embodiment of the present invention. The multimedia synchronous playing system described in this embodiment includes a source device 100 , a master device 200 and at least one slave device 300 . Wherein, the master device 200 and at least one slave device 300 both belong to the playback device. Wherein, the master device 200 establishes a connection with the source device 100 and the slave device 300 through a network, and the slave device 300 establishes a connection with the source device 100 through a network. Wherein, the source device 100 can provide multimedia data to multiple playback devices (such as the master device 200 and at least one slave device 300) through the network, so that the master device 200 and at least one slave device 300 can perform synchronous playback; or The master device 200 is used for receiving the multimedia data sent by the source device 100, and for synchronizing the received multimedia data to the slave device 300, so as to realize synchronous multimedia playback. Likewise, the slave device 300 may feed back synchronization information to the master device 200 or the source device 100 through a network; the master device 200 may feed back synchronization information to the source device 100 through a network. The multimedia synchronous playback system can execute the implementation described in the multimedia synchronous playback method provided in the first embodiment and the second embodiment of the present invention, and can also perform a multimedia synchronous playback method provided in the third embodiment of the present invention The implementation described in the device will not be repeated here.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In the embodiment of the present invention, the multimedia synchronous playback device and the multimedia synchronous playback method in the above embodiments belong to the same idea, and the multimedia synchronous playback method provided in the embodiment of the multimedia synchronous playback method can be run on the multimedia synchronous playback device. For any method, its specific implementation process can be found in the embodiment of the multimedia synchronous playback method, and will not be repeated here.

It should be noted that, for the multimedia synchronous playback method described in the present invention, ordinary testers in the field can understand that all or part of the process for realizing the multimedia synchronous playback method described in the embodiment of the present invention can be controlled by computer programs. To accomplish this, the computer program may be stored in a computer-readable storage medium, such as stored in the memory of the terminal, and executed by at least one processor in the terminal, and the execution process may include such as the multimedia synchronization A flow of an embodiment of a playback method. Wherein, the storage medium may be a magnetic disk, an optical disk, a read only memory (ROM, Read Only Memory), a random access memory (RAM, Random Access Memory) and the like.

For the multimedia synchronous playback device in the embodiment of the present invention, its functional modules can be integrated into one processing chip, or each module can exist separately physically, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium, such as read-only memory, magnetic disk or optical disk, etc. .

Above, a kind of multimedia synchronous playback method, device, terminal and system provided by the embodiment of the present invention has been introduced in detail. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only used To help understand the technical solutions and core ideas of the present invention; those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these Modification or substitution does not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. a kind of multimedia synchronous play method it is characterised in that methods described includes：

Obtain the corresponding actual data transfer rate of transmission channel between main control device and slave；

Obtain the corresponding average data transfer rate of described transmission channel；

According to described actual data transfer rate and described average data transfer rate, the data adjusting described transmission channel passes Defeated speed, to realize the synchronization broadcasting of main control device and described slave.

2. multimedia synchronous according to claim 1 play method it is characterised in that described pass according to described real data Defeated speed and described average data transfer rate, adjust the message transmission rate of described transmission channel, to realize main control device Synchronization with described slave is play, and specifically includes：

When described actual data transfer rate is less than described average data transfer rate, the data increasing described transmission channel passes Defeated speed, to realize the synchronization broadcasting of main control device and described slave.

3. multimedia synchronous according to claim 2 play method it is characterised in that the described transmission channel of described increase Message transmission rate, specifically includes：

By the difference of described average data transfer rate and described actual data transfer rate and described average data transfer rate Ratio, as scaling up, increases the message transmission rate of described transmission channel.

4. multimedia synchronous according to claim 1 play method it is characterised in that described pass according to described real data Defeated speed and described average data transfer rate, adjust the message transmission rate of described transmission channel, to realize main control device Synchronization with described slave is play, and specifically includes：

When described actual data transfer rate is more than described average data transfer rate, the data reducing described transmission channel passes Defeated speed, to realize the synchronization broadcasting of main control device and described slave.

5. multimedia synchronous according to claim 4 play method it is characterised in that the described transmission channel of described reduction Message transmission rate, specifically includes：

By the difference of described actual data transfer rate and described average data transfer rate and described average data transfer rate Ratio, as reducing ratio, reduces the message transmission rate of described transmission channel.

6. a kind of multimedia synchronous play device it is characterised in that described device includes：

First acquisition module, for obtaining the corresponding actual data transfer of the transmission channel between main control device and slave speed Rate；

Second acquisition module, for obtaining the corresponding average data transfer rate of described transmission channel；

Adjusting module, for according to described actual data transfer rate and described average data transfer rate, adjusting described biography The message transmission rate of defeated passage, to realize the synchronization broadcasting of main control device and described slave.

7. multimedia synchronous according to claim 6 play device it is characterised in that described adjusting module, also include：

First adjustment unit, for when described actual data transfer rate is less than described average data transfer rate, increasing institute State the message transmission rate of transmission channel, to realize the synchronization broadcasting of main control device and described slave.

8. multimedia synchronous according to claim 7 play device it is characterised in that described first adjustment unit, are used for Ratio by the difference with described actual data transfer rate for the described average data transfer rate and described average data transfer rate As scaling up, increase the message transmission rate of described transmission channel.

9. multimedia synchronous according to claim 6 play device it is characterised in that described adjusting module, also include：

Second adjustment unit, for when described actual data transfer rate is more than described average data transfer rate, reducing institute State the message transmission rate of transmission channel, to realize the synchronization broadcasting of main control device and described slave.

10. multimedia synchronous according to claim 9 play device it is characterised in that described second adjustment unit, are used for Ratio by the difference with described average data transfer rate for the described actual data transfer rate and described average data transfer rate As reducing ratio, reduce the message transmission rate of described transmission channel.

A kind of 11. terminals are it is characterised in that include：Memorizer and processor, described processor is coupled with described memorizer, its In, described processor calls the described executable program code of storage in described memorizer, and execution is as arbitrary in claim 1 to 5 Method described in.

A kind of 12. multimedia synchronous Play Systems are it is characterised in that include source device, main control device and at least one subordinate Equipment, wherein, described main control device is passed through network and is connected with described source device and the foundation of described slave, described main control device For receiving the multi-medium data that described source device sends, and set for the multi-medium data receiving is synchronized to described subordinate Standby, described system adopts the method described in any one of claim 1 to 5 to realize.