CN106303287B - A kind of multi-mobile-terminal screen splicing method, equipment and system based on near-field communication - Google Patents

Abstract

The invention discloses a multi-mobile terminal screen splicing method, device and system based on near field communication. The method includes: dividing the screen content to be displayed into n parts, n≥2; Pair the slave devices, determine the screen content to be displayed and the sound channel of each slave device, and obtain the device information of each slave device; establish a WiFi connection with each slave device according to the device information of each slave device. The transmission performance allocates the WiFi transmission bandwidth of each slave device; sends the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device, and controls each slave device according to the duration of the cached screen content of each slave device. Play and pause the device and the master device, so that each slave device and the master device can play the screen content to be displayed synchronously.

Description

A method, device and system for multi-mobile terminal screen splicing based on near field communication

technical field

The invention relates to a screen splicing technology, in particular to a multi-mobile terminal screen splicing method, device and system based on Near Field Communication (NFC, Near Field Communication).

Background technique

With the continuous development of the mobile terminal technology, the functions of the mobile terminal are becoming more and more powerful. People have become accustomed to using mobile terminals, such as mobile phones to watch videos and play games. Although the screen of the mobile terminal is already very large, it still cannot fully satisfy people's demand for watching videos. If the screens of several mobile terminals can be spliced together to form a large screen, the problem of small screens can be solved and the user experience of people watching videos on mobile terminals can be improved.

At present, the screen splicing methods of multiple mobile terminals mainly include the following: 1. Screen splicing is realized through the hardware interface of the mobile terminal, for example, through the high-definition multimedia interface (HDMI, High Definition Multimedia Interface) of the mobile phone or other video interfaces, the The screens of several mobile phones are connected to form a large screen. 2. Realize screen splicing through mobile terminal wireless transmission. For example, the segmented video content is transmitted to other mobile phones through wireless fidelity (WiFi, Wireless Fidelity), Bluetooth and other wireless transmission methods, thereby realizing screen splicing.

The existing screen splicing method of multiple mobile terminals has the following problems: 1. The method of realizing screen splicing through hardware interface needs to add video interfaces such as HDMI, which not only increases the hardware cost, but also may cause damage to the screen during movement. Problems such as hardware connection interruption occur, affecting the user experience. 2. The method of realizing screen splicing through wireless transmission such as Wifi, Bluetooth, etc., there will be a delay in wireless transmission, which will cause the content of each split screen to be out of synchronization, which will seriously affect the user experience; and, the method of realizing screen splicing through wireless transmission such as Wifi and Bluetooth , the devices within the search range will be listed, and there are many interfering devices. Wireless negotiation pairing needs to know the name and serial number of the other party's device. The process of pairing is cumbersome and not intuitive.

SUMMARY OF THE INVENTION

To solve the above technical problems, embodiments of the present invention provide an NFC-based multi-mobile terminal screen splicing method, device, and system.

The near field communication-based multi-mobile terminal screen splicing method provided by the embodiment of the present invention includes:

Divide the screen content to be displayed into n parts, n≥2;

Pair with n-1 slave devices through NFC, determine the screen content to be displayed and the sound channel of each slave device, and obtain the device information of each slave device;

Establish a Wi-Fi connection with each slave device according to the device information of each slave device, and allocate the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device;

According to the WiFi transmission bandwidth of each slave device, the divided screen content and the audio content of the corresponding channel are sent to each slave device, and the playback and pause of each slave device and the master device are controlled according to the duration of the cached screen content of each slave device, so that the Each slave device and the master device play the screen content to be displayed synchronously.

In an embodiment, the allocating WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device includes:

Send the divided screen content of the preset number of frames to each slave device, and calculate the WiFi transmission delay time according to the reception response command sent by each slave device;

The WiFi transmission bandwidth of each slave device is allocated according to the WiFi transmission delay time of each slave device.

In one embodiment, the divided screen content and the audio content of the corresponding channel are sent to each slave device according to the WiFi transmission bandwidth of each slave device, and each slave device and the master device are controlled according to the duration of the cached screen content of each slave device. Play and pause the device, so that each slave device and the master device can play the screen content to be displayed synchronously, including:

According to the WiFi transmission bandwidth of each slave device, the divided screen content and the corresponding channel audio content of the preset duration are sent to each slave device at the same time;

After receiving the receiving response command from each slave device, send a play command to each slave device, so that each slave device and the master device play the screen content to be displayed synchronously.

In an embodiment, the allocating WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device includes:

When the screen content is played synchronously by the slave device, it continues to send the divided screen content to each slave device, and at the same time receives the transmission delay time and the duration of the cached screen content feedback from each slave device;

Adjust the WiFi transmission bandwidth allocated to each slave device according to the transmission delay time of each slave device and the duration of the cached screen content.

In one embodiment, the divided screen content and the audio content of the corresponding channel are sent to each slave device according to the WiFi transmission bandwidth of each slave device, and each slave device and the master device are controlled according to the duration of the cached screen content of each slave device. Play and pause the device, so that each slave device and the master device can play the screen content to be displayed synchronously, including:

Send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device;

When monitoring that the duration of the cached screen content of any slave device is less than or equal to the first preset duration, send a pause instruction to each slave device, so that each slave device and the master device simultaneously pause to play the screen content to be displayed;

When the duration of the screen content cached by each slave device is greater than or equal to the second preset duration, a playback instruction is sent to each slave device, so that each slave device and the master device synchronously play the screen content to be displayed; wherein, the first preset The duration is less than the second preset duration.

In one embodiment, the range of the first preset duration is 0 seconds to 1 minute; the range of the second preset duration is 1 minute to 10 minutes; the first preset duration is smaller than the second preset duration duration.

In an embodiment, the pairing with n-1 slave devices through NFC includes:

Establish communication connections with n-1 slave devices respectively through NFC;

Based on the established connections, device information of the n-1 slave devices is acquired, and paired with the n-1 slave devices.

In an embodiment, the pairing with n-1 slave devices through NFC includes:

Turn on the NFC function of the master device, and enter the pairing program of the master device; and, turn on the NFC function of n-1 slave devices, and enter the pairing program of n-1 slave devices;

Set the divided screen content and the sound channel to be assigned;

When the master device is in close contact with n-1 slave devices, the master device and n-1 slave devices complete information interaction through NFC, and the master device obtains the device information of n-1 slave devices, n-1 channels that learn from the device the content of the split screen to be displayed and the playback sound;

The pairing is done based on the device information, the screen content after splitting, and the channel playing the sound.

In an embodiment, the device information of the slave device includes: device name, device serial number, screen resolution, and WiFi address.

The NFC-based multi-mobile terminal screen splicing device provided by the embodiment of the present invention includes:

The dividing unit is used to divide the screen content to be displayed into n parts, n≥2;

The NFC unit is used to pair with n-1 slave devices respectively through NFC, determine the screen content to be displayed and the sound channel of each slave device to be displayed, and obtain the device information of each slave device;

A bandwidth allocation unit, configured to establish a WiFi connection with each slave device according to the device information of each slave device, and allocate the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device;

The control unit is used to send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device, and control the playback of each slave device and the master device according to the duration of the cached screen content of each slave device. and pause, so that each slave device and the device play the screen content to be displayed synchronously.

In one embodiment, the bandwidth allocation unit includes:

The first calculation subunit is used to send the divided screen content of the preset number of frames to each slave device, and calculate the WiFi transmission delay time according to the reception response command sent by each slave device;

The first allocation subunit is configured to allocate the WiFi transmission bandwidth of each slave device according to the WiFi transmission delay time of each slave device.

In one embodiment, the control unit includes:

The sending subunit is used to simultaneously send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device;

The playback control subunit is configured to send a playback instruction to each slave device after receiving a reception response instruction from each slave device, so that each slave device and the device can play the screen content to be displayed synchronously.

In one embodiment, the bandwidth allocation unit includes:

The second calculation subunit is used to continue to send the divided screen content to each slave device when the screen content is played synchronously from the device, and simultaneously receive the transmission delay time and the buffered screen content duration fed back by each slave device;

The second allocation subunit is configured to adjust the WiFi transmission bandwidth allocated to each slave device according to the transmission delay time of each slave device and the duration of the cached screen content.

In one embodiment, the bandwidth allocation unit includes:

The sending subunit is used to send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device;

The pause control subunit is used to send a pause instruction to each slave device when the duration of the cached screen content of any slave device is detected to be less than or equal to the first preset duration, so that each slave device and the device simultaneously pause the playback to be displayed screen content;

A playback control subunit, configured to send a playback instruction to each slave device when the duration of the cached screen content of each slave device is greater than or equal to the second preset duration, so that each slave device and the device synchronously play the screen content to be displayed; Wherein, the first preset duration is less than the second preset duration.

In one embodiment, the range of the first preset duration is 0 seconds to 1 minute; the range of the second preset duration is 1 minute to 10 minutes; the first preset duration is smaller than the second preset duration duration.

In an embodiment, the NFC unit is further configured to establish communication connections with n-1 slave devices respectively through NFC; based on the established connections, obtain the device information of the n-1 slave devices, and communicate with all The n-1 slave devices are paired.

In an embodiment, the device information of the slave device includes: device name, device serial number, screen resolution, and WiFi address.

The multi-mobile terminal screen splicing system package based on near field communication provided by the embodiment of the present invention: a master device, a slave device;

The master device is used to divide the screen content to be displayed into n parts, n≥2; respectively pair with n-1 slave devices through NFC to determine the screen content to be displayed and the sound channel of each slave device , and obtain the device information of each slave device; establish a WiFi connection with each slave device according to the device information of each slave device, allocate the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device; Each slave device sends the divided screen content and the audio content of the corresponding channel, and controls the playback and pause of each slave device and the master device according to the duration of the cached screen content of each slave device, so that each slave device and the device play synchronously The screen content to be displayed;

The slave device is used for pairing with the master device through NFC, and sends the device information of the slave device to the master device; establishes a WiFi connection with the master device, and receives the divided screen sent by the master device according to the WiFi transmission bandwidth allocated by the master device. content and audio content of the corresponding channel; play/pause the cached screen content according to the control of the master device.

In the technical solution of the embodiment of the present invention, the master device divides the screen content to be displayed into n parts, the master device makes close contact with n-1 slave devices through NFC to pair with each other, and determines the divided screen content to be displayed by each slave device. The content of the screen and the channel of playing sound, as well as the device information of each slave device, because NFC pairing does not need to know the name of the device to be paired, the device serial number and other information in advance, just touch the master device and the slave device to complete the pairing. More convenient, more intuitive, and good user experience.

The master device establishes a WiFi connection with each slave device, and the master device allocates the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device, which can reduce the buffering time of screen content, and minimize the waiting time while realizing synchronous playback. user experience.

The master device controls the playback and pause of each slave device and the master device according to the duration of the cached screen content of each slave device, so that each slave device and the master device synchronously play the screen content to be displayed and improve the user experience.

To sum up, the technical solutions of the embodiments of the present invention utilize the proximity contact of NFC to intuitively realize the direct pairing between the master device and n-1 slave devices, and allocate the WiFi transmission bandwidth and bandwidth according to the transmission performance of each slave device. Adjust the screen playback time to achieve synchronous playback between devices and improve user experience.

Description of drawings

1 is a schematic flowchart of an NFC-based multi-mobile terminal screen splicing method according to Embodiment 1 of the present invention;

2 is a schematic flowchart of an NFC-based multi-mobile terminal screen splicing method according to Embodiment 2 of the present invention;

3 is a schematic diagram of screen content segmentation according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of NFC pairing according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a device according to Embodiment 1 of the present invention;

FIG. 6 is a schematic structural diagram of a device according to Embodiment 2 of the present invention;

FIG. 7 is a schematic structural composition diagram of a multi-mobile terminal screen splicing system based on near field communication according to an embodiment of the present invention.

Detailed ways

In order to understand the features and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1 is a schematic flowchart of a method for splicing screens of multiple mobile terminals based on near field communication according to Embodiment 1 of the present invention. The method for splicing screens of multiple mobile terminals based on near field communication in this example is applied to a main device, as shown in FIG. 1 , The multi-mobile terminal screen splicing method based on near field communication includes the following steps:

Step 101: Divide the screen content to be displayed into n parts, where n≥2.

In this embodiment of the present invention, the master device and the slave device may be electronic devices such as a mobile phone, a tablet computer, and a notebook.

In this embodiment of the present invention, the screen content to be displayed may be any content such as pictures and videos.

In the embodiment of the present invention, the main device divides the screen content to be displayed into n parts, taking n=4 as an example, referring to FIG. 3 , the main device divides the screen content to be displayed into 4 parts, and the divided screen content is Si, i=1-4. If the master device displays S ₁ , then S ₂ , S ₃ , and S ₄ will be assigned to three slave devices for display.

Step 102: Pair with n-1 slave devices respectively through NFC, determine the screen content to be displayed and the sound channel of each slave device to be displayed, and obtain the device information of each slave device.

In the embodiment of the present invention, the pairing with n-1 slave devices respectively through NFC includes: establishing communication connections with n-1 slave devices respectively through NFC; and obtaining the n-1 slave devices based on the established connections The device information of the slave device and paired with the n-1 slave devices. Here, NFC belongs to near field communication. Only two devices in close proximity can establish a connection and exchange data. There is no problem of selecting one of multiple devices. Therefore, there is no need to know in advance the name of the device to be paired, the device serial number and other information. The pairing can be completed with just one touch, which is more convenient and intuitive.

Specifically, the master device pairs with n-1 slave devices through NFC, and acquires device information of each slave device. The specific pairing method is as follows: turn on the NFC function of the main device, and enter the pairing procedure of the main device. Turn on the NFC function of the slave device and enter the pairing procedure of the slave device. In the pairing procedure of the master device waiting to be paired, set the screen content Si after division to be assigned and the sound channel for playing the sound. Referring to FIG. 4( a ), if the divided screen content S2 is to be allocated, the selection area in the upper right corner of the screen content S2 is selected, and a sound channel, such as the right channel, is set. In the pairing procedure of the slave device waiting to be paired, the device information of the slave device will be obtained, including: device name, device serial number, screen resolution, WiFi address and other information. Referring to Fig. 4(b), the master device will acquire the device name, device serial number, screen resolution, WiFi address and other information of the slave device, and display them on the interface. The master device and the slave device are in close contact, and the information interaction is completed through NFC. The master device knows the device name, device serial number, screen resolution, WiFi address and other information of the slave device, and the slave device knows the divided screen content to be displayed Si Si and the channel where the sound is played. After successful pairing, the pairing procedure of the master device displays the relevant pairing status. Referring to FIG. 4( c ), the divided screen content S2 of the master device has been allocated to the slave device 1 (Huawei mate7), and the playback channel is the right channel. After the pairing is successful, the pairing program of the slave device displays the relevant pairing information: the divided screen content and channels, refer to Figure 4(d). Pair each slave device until the master device and n-1 slave devices are paired.

Step 103: Establish a WiFi connection with each slave device according to the device information of each slave device, and allocate the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device.

In the embodiment of the present invention, after successful pairing, the master device establishes a WiFi connection with each slave device, and allocates the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device. Here, when the master device sends the divided screen content to each slave device for the first time, the transmission performance of the slave device refers to the WiFi transmission delay time T _i of the slave device. When each slave device starts to play the divided screen content, the transmission performance of the slave device refers to the WiFi transmission delay time T _i of the slave device and the duration T _bi of the cached screen content. The embodiment of the present invention can dynamically allocate the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device, thereby reducing the buffering time of screen content, and minimizing waiting time while realizing synchronous playback.

Step 104: Send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device, and control the playback and pause of each slave device and the master device according to the duration of the cached screen content of each slave device. , so that each slave device and the master device play the screen content to be displayed synchronously.

In the embodiment of the present invention, the master device controls the playback and pause of each slave device and the master device according to the duration of the cached screen content of each slave device, so that each slave device and the master device synchronously play the screen content to be displayed and improve the user experience.

FIG. 2 is a schematic flowchart of an NFC-based multi-mobile terminal screen splicing method according to Embodiment 2 of the present invention. The NFC-based multi-mobile terminal screen splicing method in this example is applied to a main device. As shown in FIG. 1 , the NFC-based multi-mobile terminal screen splicing method is The mobile terminal screen splicing method includes the following steps:

Step 201: Divide the screen content to be displayed into n parts, where n≥2.

In this embodiment of the present invention, the master device and the slave device may be electronic devices such as a mobile phone, a tablet computer, and a notebook.

In this embodiment of the present invention, the screen content to be displayed may be any content such as pictures and videos.

In the embodiment of the present invention, the main device divides the screen content to be displayed into n parts, taking n=4 as an example, referring to FIG. 3 , the main device divides the screen content to be displayed into 4 parts, and the divided screen content is Si, i=1-4. If the master device displays S ₁ , then S ₂ , S ₃ , and S ₄ will be assigned to three slave devices for display.

Step 202: Pair with n-1 slave devices respectively through NFC, determine the screen content to be displayed and the sound channel of each slave device to be displayed, and obtain the device information of each slave device.

In this embodiment of the present invention, NFC belongs to near field communication, and only two devices in close proximity can establish a connection and exchange data. There is no problem of selecting one of multiple devices. Therefore, there is no need to know the name and serial number of the device to be paired in advance. and other information, the pairing can be completed with just one touch between the devices, which is more convenient and intuitive.

Specifically, the master device pairs with n-1 slave devices through NFC, and acquires device information of each slave device. The specific pairing method is as follows: turn on the NFC function of the main device, and enter the pairing procedure of the main device. Turn on the NFC function of the slave device and enter the pairing procedure of the slave device. In the pairing procedure of the master device waiting to be paired, set the screen content Si after division to be assigned and the sound channel for playing the sound. Referring to FIG. 4( a ), to assign the divided screen content S2 , select the selection area in the upper right corner of the screen content S2 , and set the sound channel, such as the right channel. In the pairing procedure of the slave device waiting to be paired, the device information of the slave device will be obtained, including: device name, device serial number, screen resolution, WiFi address and other information. Referring to Fig. 4(b), the master device will acquire the device name, device serial number, screen resolution, WiFi address and other information of the slave device, and display them on the interface. The master device and the slave device are in close contact, and the information interaction is completed through NFC. The master device knows the device name, device serial number, screen resolution, WiFi address and other information of the slave device, and the slave device knows the divided screen content to be displayed Si Si and the channel where the sound is played. After successful pairing, the pairing procedure of the master device displays the relevant pairing status. Referring to FIG. 4( c ), the divided screen content S2 of the master device has been allocated to the slave device 1 (Huawei mate7), and the playback channel is the right channel. After the pairing is successful, the pairing program of the slave device displays the relevant pairing information: the divided screen content and channels, refer to Figure 4(d). Pair each slave device until the master device and n-1 slave devices are paired.

Step 203: Establish a WiFi connection with each slave device according to the device information of each slave device, send the divided screen content of the preset number of frames to each slave device, and calculate the WiFi transmission delay time according to the reception response command sent by each slave device .

In the embodiment of the present invention, after successful pairing, the master device establishes a WiFi connection with each slave device, and allocates the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device.

In this embodiment of the present invention, the preset number of frames may be m frames, where m≧2. Specifically, the master device establishes a WiFi connection with each slave device at the same time. After the connection is established, the master device sends the screen content divided by m frames to each slave device at the same time. After the slave device receives the information, it sends a receive response command to the master device. The master device calculates the WiFi transmission delay time T _i according to the reception response command sent by each slave device.

Step 204: Allocate the WiFi transmission bandwidth of each slave device according to the WiFi transmission delay time of each slave device.

In the embodiment of the present invention, in order to solve the problem of asynchronous transmission caused by inconsistent WiFi transmission delay time T _i of each slave device, the WiFi transmission bandwidth Wi of each slave device is allocated according to the transmission delay time T _{i .} The basic idea is to allocate more bandwidth to the slave device with large transmission delay. The specific allocation formula is as follows:

Among them, W _z is the total WiFi bandwidth of the main device currently available.

Step 205: Simultaneously send the divided screen content and the audio content of the corresponding channel of the preset duration to each slave device according to the WiFi transmission bandwidth of each slave device.

In the embodiment of the present invention, in order to ensure the synchronization of screen content played by each slave device, each slave device needs to cache a segment of screen content first to cope with the influence of factors such as transmission delay. Specifically, the master device simultaneously sends the divided screen content of a preset duration (T _b duration) to each slave device, and T _b is set according to experience.

Step 206 : after receiving the receiving response command from each slave device, send a play command to each slave device, so that each slave device and the master device synchronously play the screen content to be displayed.

In this embodiment of the present invention, the master device sends a play instruction to each slave device after receiving the receiving response instruction from each slave device. After each slave device receives the play instruction, it starts to play the screen content synchronously.

Step 207 : when the screen content is played synchronously by the slave device, continue to send the divided screen content to each slave device, and simultaneously receive the transmission delay time and the duration of the cached screen content fed back by each slave device.

In this embodiment of the present invention, while playing, the master device continues to transmit the divided screen content to the slave devices, and at the same time, each slave device continuously feeds back the transmission delay time T _i and the buffered screen content duration T _bi to the master device. Here, because WiFi transmission itself is susceptible to interference, the transmission delay time of each slave device will change with time. Therefore, it is necessary to monitor the transmission delay time T _i of each slave device and the duration T _bi of the cached screen content in real time.

Step 208: Adjust the WiFi transmission bandwidth allocated to each slave device according to the transmission delay time of each slave device and the duration of the cached screen content.

In the embodiment of the present invention, the master device adaptively adjusts the Wifi transmission bandwidth Wi allocated to each slave device in real time according to the transmission delay time T _i of each slave device and the duration T _b of the cached screen content _.

Here, the transmission delay time T _i and the duration of the cached screen content T _bi need to be considered at the same time. The specific allocation formula is as follows:

Among them, W _z is the total WiFi bandwidth of the main device currently available.

Step 209: Send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device.

Step 210 : when it is detected that the duration of the cached screen content of any slave device is less than or equal to the first preset duration, send a pause instruction to each slave device, so that each slave device and the master device simultaneously pause to play the screen content to be displayed.

In this embodiment of the present invention, when the master device monitors that the duration T _bi of the cached screen content of any slave device is less than the first preset duration (T _bmin ), it sends a pause instruction to each slave device, and all devices pause playback at the same time to avoid the occurrence of out of sync. At the same time, each slave device continues to cache the divided screen content _Si . T _bmin is the minimum allowable remaining cache duration threshold, which is set empirically.

Step 211 : When the duration of the screen content cached by each slave device is greater than or equal to the second preset duration, send a play instruction to each slave device, so that each slave device and the master device synchronously play the screen content to be displayed.

Wherein, the first preset duration is less than the second preset duration. The range of the first preset duration is 0 seconds to 1 minute; the range of the second preset duration is 1 second to 10 minutes; the first preset duration is smaller than the second preset duration.

In the embodiment of the present invention, the first preset duration is used to cache screen content, and the second preset duration is used to indicate that the screen content cached by the slave device is long enough to be played synchronously.

In the embodiment of the present invention, when the duration T _bi of the screen content cached by each slave device is greater than the second preset duration T _b , the master device sends a play instruction to continue playing, so as to realize synchronous playback of all devices. T _bmin is less than T _b .

In the technical solution of the embodiment of the present invention, the master device is paired with n-1 slave devices in close contact with each other through NFC, determines the divided screen content to be displayed by each slave device and the sound channel for playing sound, and obtains each slave device. Name, device serial number, screen resolution, Wifi address and other parameters. There is no need to know in advance the name of the device to be paired, the device serial number and other information, and the pairing can be completed by touching it, which is more convenient, more intuitive, and has a good user experience. When using NFC to realize the pairing between the master device and the slave device, not only the divided screen content Si can be allocated, but also the sound channel can be specified to achieve a stereo playback effect. For example, after the screens are spliced, the device on the left plays the left channel, and the device on the right plays the right channel, so that a stereo playback effect can be achieved. The master device monitors the transmission delay time T _i of each slave device and the duration T _bi of the cached screen content in real time, and adaptively adjusts the WiFi transmission bandwidth Wi _allocated to each slave device in real time to solve the problem of each slave device caused by WiFi transmission delay. The screen content is out of sync.

FIG. 5 is a schematic structural diagram of a device according to Embodiment 1 of the present invention. As shown in FIG. 1 , the device includes:

The dividing unit 51 is used to divide the screen content to be displayed into n parts, n≥2;

The NFC unit 52 is used for pairing with n-1 slave devices respectively through NFC, determining the screen content to be displayed and the sound channel of each slave device to be displayed, and acquiring the device information of each slave device;

The bandwidth allocation unit 53 is configured to establish a WiFi connection with each slave device according to the device information of each slave device, and allocate the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device;

The control unit 54 is used to send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device, and control the data of each slave device and the master device according to the duration of the cached screen content of each slave device. Play and pause, so that each slave device and the device play the screen content to be displayed synchronously.

In this embodiment of the present invention, the device information of the slave device includes: a device name, a device serial number, a screen resolution, and a WiFi address.

Those skilled in the art should understand that the implementation function of each unit in the device shown in FIG. 5 can be understood with reference to the foregoing description of the method for splicing screens of multiple mobile terminals based on near field communication.

FIG. 6 is a schematic structural diagram of a device according to Embodiment 2 of the present invention. As shown in FIG. 6 , the device includes:

The dividing unit 61 is used to divide the screen content to be displayed into n parts, n≥2;

The NFC unit 62 is used for pairing with n-1 slave devices through NFC, determining the screen content to be displayed and the sound channel of each slave device to be displayed, and acquiring the device information of each slave device;

The bandwidth allocation unit 63 is configured to establish a WiFi connection with each slave device according to the device information of each slave device, and allocate the WiFi transmission bandwidth of each slave device according to the transmission performance of each slave device;

The control unit 64 is used to send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device, and control the data of each slave device and the master device according to the duration of the cached screen content of each slave device. Play and pause, so that each slave device and the device play the screen content to be displayed synchronously.

The bandwidth allocation unit 63 includes:

The first calculation subunit 631 is used to send the divided screen content of the preset number of frames to each slave device, and calculate the WiFi transmission delay time according to the reception response command sent by each slave device;

The first allocation subunit 632 is configured to allocate the WiFi transmission bandwidth of each slave device according to the WiFi transmission delay time of each slave device.

The control unit 64 includes:

The sending subunit 641 is used to simultaneously send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device;

The playback control subunit 642 is configured to send a playback instruction to each slave device after receiving a reception response instruction from each slave device, so that each slave device and the device can play the screen content to be displayed synchronously.

The bandwidth allocation unit 63 includes:

The second calculation subunit 633 is used to continue to send the divided screen content to each slave device when the screen content is played synchronously from the device, and simultaneously receive the transmission delay time and the buffered screen content duration fed back by each slave device;

The second allocation subunit 634 is configured to adjust the WiFi transmission bandwidth allocated to each slave device according to the transmission delay time of each slave device and the duration of the cached screen content.

The control unit 64 includes:

The sending subunit 641 is also used to send the divided screen content and the audio content of the corresponding channel to each slave device according to the WiFi transmission bandwidth of each slave device;

The pause control subunit 643 is used to send a pause instruction to each slave device when the duration of the cached screen content of any slave device is detected to be less than or equal to the first preset duration, so that each slave device and the device simultaneously pause the playback of the waiting device. Displayed screen content;

The playback control subunit 642 is also used to send a playback instruction to each slave device when the duration of the cached screen content of each slave device is greater than or equal to the second preset duration, so that each slave device and the device synchronously play the to-be-displayed The screen content; wherein, the first preset duration is less than the second preset duration.

The range of the first preset duration is 0 seconds to 1 minute; the range of the second preset duration is 1 minute to 10 minutes; the first preset duration is less than the second preset duration.

The NFC unit 62 is further configured to establish communication connections with n-1 slave devices respectively through NFC; based on the established connections, obtain the device information of the n-1 slave devices, and communicate with the n-1 slave devices. Pair from device.

In this embodiment of the present invention, the device information of the slave device includes: a device name, a device serial number, a screen resolution, and a WiFi address.

Those skilled in the art should understand that the implementation function of each unit in the device shown in FIG. 6 can be understood with reference to the foregoing description of the method for splicing screens of multiple mobile terminals based on near field communication.

FIG. 7 is a schematic diagram of the structure and composition of a multi-mobile terminal screen splicing system based on near field communication according to an embodiment of the present invention. As shown in FIG. 7 , the system includes: a master device 71 and a slave device 72;

The master device 71 is used to divide the screen content to be displayed into n parts, n≥2; respectively pair with n-1 slave devices 72 through NFC to determine the screen content to be displayed and play sound of each slave device 72 and obtain the device information of each slave device 72; establish a WiFi connection with each slave device 72 according to the device information of each slave device 72, and allocate the WiFi transmission bandwidth of each slave device 72 according to the transmission performance of each slave device 72; according to The WiFi transmission bandwidth of each slave device 72 sends the divided screen content and the audio content of the corresponding channel to each slave device 72, and controls the playback and playback of each slave device 72 and the master device 71 according to the duration of the cached screen content of each slave device 72. Pause, so that each slave device 72 and the master device 71 play the screen content to be displayed synchronously;

The slave device 72 is used for pairing with the master device 71 through NFC, and sends the device information of the slave device 72 to the master device 71; establishes a WiFi connection with the master device 71, and receives the master device according to the WiFi transmission bandwidth allocated by the master device 71. The divided screen content and the audio content of the corresponding channel sent by 71 ; play/pause the buffered screen content according to the control of the main device 71 .

Those skilled in the art should understand that the implementation functions of the master device and the slave device in the near-field communication-based multi-mobile terminal screen splicing system shown in FIG. And understand.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms. of.

The unit described above as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may all be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above-mentioned integration The unit can be implemented either in the form of hardware or in the form of hardware plus software functional units.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, execute Including the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: a removable storage device, a read-only memory (ROM, Read Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, etc. A medium that stores program code.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (18)

1. a kind of multi-mobile-terminal screen splicing method based on near-field communication, which is characterized in that the described method includes:

Screen content to be shown is divided into n parts, n >=2；

It is matched, is determined respectively from equipment screen content to be shown and broadcasting sound from equipment with n-1 respectively by NFC Sound channel, and obtain respectively from the facility information of equipment；

According to respectively from the facility information of equipment with respectively establish Wireless Fidelity WiFi from equipment and connect, foundation is respectively from the transporting of equipment It can distribute respectively from the WiFi transmission bandwidth of equipment；

According to respectively from the WiFi transmission bandwidth of equipment to respectively from the audio of screen content and corresponding sound channel after equipment transmission segmentation Content, and according to respectively from the caching screen content duration of equipment control respectively from the broadcasting and pause of equipment and main equipment so that respectively Screen content to be shown is played simultaneously from equipment and main equipment.

2. the multi-mobile-terminal screen splicing method according to claim 1 based on near-field communication, which is characterized in that described According to respectively from the distribution of the transmission performance of equipment respectively from the WiFi transmission bandwidth of equipment, comprising:

Screen content after sending the segmentation of default frame number is instructed according to the reception response respectively sent from equipment to respectively from equipment Calculate the WiFi propagation delay time；

According to respectively distributing the respectively WiFi transmission bandwidth from equipment from the WiFi propagation delay time of equipment.

3. the multi-mobile-terminal screen splicing method according to claim 2 based on near-field communication, which is characterized in that described According to respectively from the WiFi transmission bandwidth of equipment to the audio content for respectively sending the screen content after segmentation and corresponding sound channel from equipment, And according to respectively from the caching screen content duration of equipment control respectively from the broadcasting and pause of equipment and main equipment so that respectively from equipment And screen content to be shown is played simultaneously in main equipment, comprising:

According to respectively from the WiFi transmission bandwidth of equipment simultaneously to respectively from equipment send preset duration segmentation after screen content and The audio content of corresponding sound channel；

After receiving respectively from the reception response of equipment instruction, Xiang Gecong equipment sends play instruction, so that respectively from equipment and master Screen content to be shown is played simultaneously in equipment.

4. the multi-mobile-terminal screen splicing method according to claim 1 based on near-field communication, which is characterized in that described According to respectively from the distribution of the transmission performance of equipment respectively from the WiFi transmission bandwidth of equipment, comprising:

When screen content is played simultaneously from equipment, continue to respectively from equipment send segmentation after screen content, while receive respectively from The propagation delay time of equipment feedback and caching screen content duration；

It is respectively transmitted from the WiFi of equipment according to respectively adjusting to distribute to from the propagation delay time of equipment and caching screen content duration Bandwidth.

5. the multi-mobile-terminal screen splicing method according to claim 4 based on near-field communication, which is characterized in that described According to respectively from the WiFi transmission bandwidth of equipment to the audio content for respectively sending the screen content after segmentation and corresponding sound channel from equipment, And according to respectively from the caching screen content duration of equipment control respectively from the broadcasting and pause of equipment and main equipment so that respectively from equipment And screen content to be shown is played simultaneously in main equipment, comprising:

According to respectively from the WiFi transmission bandwidth of equipment to respectively from the audio of screen content and corresponding sound channel after equipment transmission segmentation Content；

When monitoring that any one is less than or equal to the first preset duration from the caching screen content duration of equipment, sends pause and refer to It enables to respectively from equipment, plays screen content to be shown so as to respectively suspend simultaneously from equipment and main equipment；

When being respectively all larger than from equipment caching screen content duration equal to the second preset duration, Xiang Gecong equipment, which sends to play, to be referred to It enables, so as to which screen content to be shown is respectively played simultaneously from equipment and main equipment；Wherein, first preset duration is less than second Preset duration.

6. the multi-mobile-terminal screen splicing method according to claim 5 based on near-field communication, which is characterized in that described The range of first preset duration is 0 second to 1 minute；The range of second preset duration is 1 second to 10 minutes；Described first is pre- If duration is less than the second preset duration.

7. the multi-mobile-terminal screen splicing method according to claim 1 based on near-field communication, which is characterized in that described It is matched respectively with n-1 from equipment by NFC, comprising:

It is established and is communicated to connect from equipment with n-1 respectively by NFC；

Based on the connection established, the n-1 facility informations from equipment are obtained, and a from device pairing with the n-1.

8. the multi-mobile-terminal screen splicing method according to claim 1 based on near-field communication, which is characterized in that described It is matched respectively with n-1 from equipment by NFC, comprising:

The NFC function for opening main equipment, into the matcher of main equipment；And the n-1 NFC functions from equipment are opened, into Enter the n-1 matchers from equipment；

Screen content after the segmentation to be distributed is set and plays the sound channel of sound；

When the main equipment and n-1 from equipment close contact, the main equipment and n-1 pass through NFC completion from equipment The interaction of information, the main equipment obtains the n-1 facility informations from equipment, after n-1 know the segmentation to be shown from equipment Screen content and the sound channel for playing sound；

Sound channel based on screen content after facility information, segmentation and broadcasting sound, completes pairing.

9. the multi-mobile-terminal screen splicing method according to any one of claims 1 to 8 based on near-field communication, feature Be, it is described from the facility information of equipment include: device name, equipment serial number, screen resolution, the address WiFi.

10. a kind of multi-mobile-terminal screen splicing equipment based on near-field communication, which is characterized in that the equipment includes:

Cutting unit, for screen content to be shown to be divided into n parts, n >=2；

NFC unit determines screen content respectively to be shown from equipment for being matched respectively with n-1 from equipment by NFC With play sound sound channel, and obtain respectively from the facility information of equipment；

Bandwidth allocation element, for according to respectively from the facility information of equipment with respectively establish WiFi from equipment and connect, foundation is respectively from setting Standby transmission performance is distributed respectively from the WiFi transmission bandwidth of equipment；

Control unit, for according to respectively from the WiFi transmission bandwidth of equipment to respectively sending the screen content and right after segmentation from equipment Answer the audio content of sound channel, and according to respectively from the caching screen content duration control of equipment respectively from the broadcasting of equipment and main equipment with Pause, so as to which screen content to be shown respectively is played simultaneously from equipment and the equipment.

11. equipment according to claim 10, which is characterized in that the bandwidth allocation element includes:

First computation subunit, the screen content after segmentation for sending default frame number is to respectively from equipment, and according to respectively from setting The reception response instruction that preparation is sent calculates the WiFi propagation delay time；

First distribution subelement, respectively distributes the respectively WiFi transmission belt from equipment from the WiFi propagation delay time of equipment for basis It is wide.

12. equipment according to claim 11, which is characterized in that described control unit includes:

Transmission sub-unit, for according to respectively from the WiFi transmission bandwidth of equipment simultaneously to respectively from equipment send segmentation after screen in Hold and correspond to the audio content of sound channel；

Control subelement is played, for after receiving respectively from the reception response of equipment instruction, Xiang Gecong equipment, which sends to play, to be referred to It enables, so as to which screen content to be shown respectively is played simultaneously from equipment and the equipment.

13. equipment according to claim 10, which is characterized in that the bandwidth allocation element includes:

Second computation subunit when for screen content to be played simultaneously from equipment, continues to respectively from the screen after equipment transmission segmentation Curtain content, while receiving the propagation delay time respectively fed back from equipment and caching screen content duration；

Second distribution subelement is respectively distributed to from the propagation delay time of equipment and caching screen content duration adjustment for basis Respectively from the WiFi transmission bandwidth of equipment.

14. equipment according to claim 13, which is characterized in that described control unit includes:

Transmission sub-unit, for according to respectively from the WiFi transmission bandwidth of equipment to respectively from equipment send segmentation after screen content and The audio content of corresponding sound channel；

Pause control subelement monitors that any one is less than or equal to first in advance from the caching screen content duration of equipment for working as If when duration, sending pause instruction to respectively from equipment, playing screen to be shown so as to respectively suspend simultaneously from equipment and the equipment Curtain content；

Play control subelement, for when respectively from equipment caching screen content duration be all larger than equal to the second preset duration when, to Play instruction respectively is sent from equipment, so as to which screen content to be shown respectively is played simultaneously from equipment and the equipment；Wherein, described First preset duration is less than the second preset duration.

15. equipment according to claim 14, which is characterized in that the range of first preset duration is 0 second to 1 point Clock；The range of second preset duration is 1 second to 10 minutes；First preset duration is less than the second preset duration.

16. equipment according to claim 10, which is characterized in that the NFC unit, be also used to by NFC respectively with n-1 A establish from equipment communicates to connect；Based on the connection established, obtain the n-1 facility informations from equipment, and with it is described N-1 is a from device pairing.

17. equipment according to any one of claims 10 to 16, which is characterized in that the facility information packet from equipment It includes: device name, equipment serial number, screen resolution, the address WiFi.

18. a kind of multi-mobile-terminal screen splicing system based on near-field communication, which is characterized in that the system packet: main equipment, From equipment；

The main equipment, for screen content to be shown to be divided into n parts, n >=2；It is a from equipment with n-1 respectively by NFC It is matched, is determined respectively from the sound channel of equipment screen content to be shown and broadcasting sound, and obtain respectively from the equipment of equipment Information；According to respectively from the facility information of equipment with respectively establish WiFi from equipment and connect, foundation is respectively from the distribution of the transmission performance of equipment Respectively from the WiFi transmission bandwidth of equipment；According to respectively from the WiFi transmission bandwidth of equipment to respectively from equipment send segmentation after screen in Hold and the audio content of corresponding sound channel, and according to respectively from the caching screen content duration control of equipment respectively from equipment and main equipment It plays and suspends, so as to which screen content to be shown respectively is played simultaneously from equipment and the equipment；

It is described from equipment, for being matched by NFC and main equipment, main equipment will be sent to from the facility information of equipment；With Main equipment establishes WiFi connection, and the WiFi transmission bandwidth according to main equipment distribution receives in the screen after the segmentation that main equipment is sent Hold and correspond to the audio content of sound channel；Screen content is cached according to the control of main equipment broadcasting/pause.