CN111901645B - All-in-one machine with screen projection function and screen projection control method - Google Patents
All-in-one machine with screen projection function and screen projection control method Download PDFInfo
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- CN111901645B CN111901645B CN202010655654.3A CN202010655654A CN111901645B CN 111901645 B CN111901645 B CN 111901645B CN 202010655654 A CN202010655654 A CN 202010655654A CN 111901645 B CN111901645 B CN 111901645B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
Abstract
The invention discloses an all-in-one machine with a screen projecting function and a screen projecting control method, wherein a communication transmission unit is used for establishing communication connection with an operation terminal; the temporary stack channel storage unit is used for receiving a plurality of screen projection data simultaneously, each temporary stack channel only receives one screen projection data at a time and distributes all the screen projection data to different temporary stack channels in sequence; the data identification unit is used for identifying the data transmission on-off and the data type of the screen projection data in each temporary stack channel; the display split screen control unit automatically controls the split screen quantity according to the screen projection data identification results of the data identification unit in all the temporary stack lanes, and establishes a tree-shaped selection activity corresponding relation between the screen projection data and the display split screens; the display size regulating and controlling unit is used for regulating the size of each screen of the split screens of the display; the invention realizes that the normal operation of the screen projection work is influenced by the screen projection content change of the screen projection, avoids accidental screen projection-free contents, and ensures the stability of the screen projection work.
Description
Technical Field
The invention relates to the technical field of screen projection all-in-one machines, in particular to an all-in-one machine with a screen projection function and a screen projection control method.
Background
The function of on-screen interaction can enable a user to project all contents on the screen of equipment such as a Windows notebook computer, an Android smart phone/an apple mobile phone/a tablet personal computer and the like onto a touch control all-in-one machine supporting the function, and multi-screen sharing is achieved.
Generally, a mobile phone and an intelligent television are required to be in the same two-layer local area network firstly when the mobile phone is required to be projected to the intelligent television. Secondly, the mobile phone and the smart television are required to support screen projection protocols such as AirPlay, Miracast and DLNA, modern mobile phones and smart televisions generally support the screen projection protocols, or a screen projection APP is downloaded from the mobile phone to project a screen, and a corresponding screen projection APP is also installed in the integrated machine, so that screen projection operation can be realized.
Although the existing screen projection methods are various, the existing screen projection methods have the following defects:
1. the content of the screen is not fixed, when the operation terminal opens other contents which do not need to be screened, the display of the all-in-one machine synchronously displays the other operation contents of the operation terminal, so that the content of the screen is unstable, and the screen-casting effect is poor;
2. for the split screen mode of the display of the all-in-one machine, the position of screen projection data is relatively fixed, and the display position is inconvenient to change.
Disclosure of Invention
The invention aims to provide an all-in-one machine with a screen projecting function and a screen projecting control method, and aims to solve the technical problems that when an operation terminal in the prior art opens other contents which do not need to be projected, a display of the all-in-one machine synchronously displays the other operation contents of the operation terminal, the position of screen projecting data is relatively fixed, and the display position is inconvenient to replace.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
an all-in-one machine with a screen projecting function comprises:
the communication transmission unit is used for connecting with the operation terminal in the same local area network and establishing communication connection with the operation terminal;
the temporary stack channel storage unit is used for receiving a plurality of screen projection data simultaneously, each temporary stack channel only receives one screen projection data at a time and distributes all the screen projection data to different temporary stack channels in sequence;
the data identification unit is used for identifying the data transmission on-off and the data type of the screen projection data in each temporary stack channel and automatically matching the screen projection data playing plug-in unit according to the data type of the screen projection data;
the display split screen control unit is used for automatically controlling the split screen quantity according to the screen projection data identification results in all the temporary stack lanes by the data identification unit and establishing the tree-shaped selection activity corresponding relation between the screen projection data and the split screens of the display;
the display size regulating and controlling unit is used for regulating the size of each screen of the split screens of the display;
and the screen switching unit is used for adaptively switching the playing content of each screen according to the tree-shaped selection activity corresponding relation.
As a preferred scheme of the present invention, the operation terminal determines, through an authorization control unit, an application APP used for screen projection in the operation terminal, after the operation terminal establishes a communication connection with the communication transmission unit, and when the operation terminal opens the application APP that establishes the communication connection, screen projection data of the application APP is sent to the temporary storage unit by way of wired transmission or wireless transmission of the communication transmission unit.
As a preferable scheme of the present invention, the communication transmission unit establishes communication connection with a plurality of the operation terminals at a time, the screen projection data of each operation terminal performs data transmission through a unique transmission channel, and the number of the transmission channels is less than or equal to the number of the display split screens of the display split screen control unit to determine the screen projection content of each display split screen.
As a preferable scheme of the present invention, the communication transmission unit establishes a communication connection with a single operation terminal at a time, a plurality of screen-projected data of the operation terminal performs data transmission through the uniquely corresponding transmission channels, and the number of the transmission channels is less than or equal to the number of the display split screens of the display split screen control unit to determine the screen-projected content of each display split screen.
In order to solve the above technical problems, the present invention further provides the following technical solutions: a screen projection control method comprises the following steps:
step 100, establishing communication connection between a single operation terminal or a plurality of operation terminals and a communication transmission unit of the all-in-one machine respectively;
200, selecting screen projection data for data transmission with a communication transmission unit through an authorization control unit;
step 300, correspondingly sending each screen projection data to a temporary stack storage unit through a unique transmission channel, and projecting each screen projection data to a display for split-screen playing according to a tree-shaped selection activity corresponding relation;
and step 400, adjusting the split screen size of each display, and adjusting the screen projection data of each display in real time.
As a preferred scheme of the present invention, in step 300, the specific implementation steps of correspondingly projecting different projection data to the split screen of the display are as follows:
setting the labels of the split screens of the display according to the sequence;
and correspondingly throwing different screen throwing data to the display split screens with the sequence labels respectively according to the sequence of the time points of communication transmission.
As a preferred scheme of the present invention, when the screen-casting data is first delivered, different screen-casting data are delivered to the sub-screens of the displays with the sequential labels according to the time sequence of communication transmission, and in the delivery process, each sub-screen of the display is customized and the screen-casting data is exchanged with the sub-screens of the other display.
As a preferred scheme of the present invention, in step 400, the specific implementation steps of customizing the size of each split screen of the display according to the requirement to display different screen projection data, and projecting the screen projection data of a single operation terminal on the split screens of the display are as follows:
selecting an application APP used by a single operation terminal for screen projection according to the number of split screens of the display;
according to the label sequence of the split screen of the display, sequentially opening the application APP according to the time sequence of establishing communication connection, wherein the opening sequence of the application APP corresponds to the label sequence of the split screen of the display one by one;
selecting an application APP currently used for screen projection of a single operation terminal in a self-defined mode, and suspending information transmission except for the temporary stack channel storage unit of the previous application APP;
and monitoring the information transmission condition in the temporary storage unit of the stack way in real time, and switching the screen projection data of the application APP which is being transmitted and the screen projection data of the application APP which is suspended and projected in the largest split screen of the display.
As a preferred embodiment of the present invention, in step 400, the specific implementation steps of projecting the screen projection data of the plurality of operation terminals on the split screen of the display include:
selecting an operation terminal for screen projection according to the number of split screens of the display;
according to the label sequence of the split screen of the display, sequentially opening the application APP of each operation terminal according to the time sequence of establishing communication connection, wherein the opening sequence of the application APP corresponds to the label sequence of the split screen of the display one by one;
tree-shaped links between each display split screen and the other operation terminals except the current operation terminal are arranged in each display split screen, and the other operation terminal is selected in each display split screen;
and screen-split exchanging is carried out on the screen-split data of the operation terminal of the current display and the screen-split data of the display corresponding to the selected screen-split data of the other operation terminal.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention realizes stable screen projection work, avoids other operation terminals from being directly in communication connection with the communication transmission unit, prevents screen projection operation replacing the operation terminal which is projecting the screen, simultaneously prevents screen projection content which is projecting the screen from being changed to influence normal operation of the screen projection work, avoids accidental screen projection of content which does not need screen projection, and ensures stability of the screen projection work;
(2) the split screen position of the display where the screen projection data are located is not fixed, but the size of the split screen of the display and the screen projection data of the split screen of the display can be adjusted according to requirements, so that the operation of projecting a plurality of screen projection data by a single operation terminal is realized, the current screen projection data are ensured to be located in the split screen with the maximum size, when a plurality of operation terminals simultaneously display the screen projection data, the position of the screen projection data can be changed, the size of each split screen of the display does not need to be adjusted back and forth, the screen projection demonstration is facilitated, and the flexibility is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a block diagram of a screen projection function module of an all-in-one machine according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a screen projection control method according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a communication transmission unit; 2-temporary stack storage unit; 3-a data recognition unit; 4-a display split screen control unit; 5-a display size regulating unit; 6-screen cutting unit; 7-operating the terminal; 8-authorization control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides an all-in-one machine with a screen projecting function and a screen projecting control method, in the all-in-one machine of the embodiment, screen projecting data of a plurality of operation terminals are displayed by using split screens of displays at the same time, and the screen projecting data of each split screen of the display can be changed in position according to requirements in a customized manner.
The all-in-one includes: the device comprises a communication transmission unit 1, a temporary stack path storage unit 2, a data identification unit 3, a display split screen control unit 4, a display size regulation and control unit 5 and a screen cutting unit 6.
The communication transmission unit 1 is used for connecting with the operation terminal 7 in the same local area network and establishing communication connection with the operation terminal 7.
The temporary stack storage unit 2 is configured to receive multiple screen projection data simultaneously, each temporary stack receives only one screen projection data at a time, and distributes all screen projection data to different temporary stacks in sequence.
As an advantage of the present embodiment, the present embodiment selects the APP for screen projection through the authorization control unit 8, and then the user does not project the screen onto the split screen of the display in synchronization with the operation when the operation terminal 7 operates the APP that has not selected to project the screen, so that the present embodiment does not project the interference information onto the screen through the above operation.
The data identification unit 3 is used for identifying the data transmission on-off and the data type of the screen projection data in each temporary stack channel, and automatically matching the screen projection data playing plug-in according to the data type of the screen projection data.
And the display split screen control unit 4 automatically controls the split screen quantity according to the screen projection data identification results in all the temporary stack lanes by the data identification unit 3, and establishes the tree-shaped selection activity corresponding relation between the screen projection data and the display split screen.
The display size regulating unit 5 is used for regulating the size of each screen of the split screens of the display.
And the screen switching unit 6 is used for adaptively switching the playing content of each screen according to the tree-shaped selection activity corresponding relation.
The communication transmission unit 1 establishes communication connection with the plurality of operation terminals 7 at one time, screen projection data of each operation terminal 7 is transmitted through the unique transmission channel, and the number of the transmission channels is less than or equal to the number of the display split screens of the display split screen control unit 4.
That is to say, the maximum number of the operation terminals 7 connected to the communication transmission unit 1 is equal to the number of split screens of the display, and the operation terminals 7 exceeding the number of split screens of the display cannot be connected, so that stable screen projection work can be realized, and other operation terminals 7 are prevented from being directly connected to the communication transmission unit 1 in a communication manner, so that the operation terminals 7 are prevented from replacing the operation terminals 7 which are projecting the screen, and the stability of the screen projection work is ensured.
Meanwhile, only one transmission channel is allocated to the screen projection data of each operation terminal 7, so that after screen projection contents are selected by each operation terminal 7, no vacant transmission channel displays other screen projection data of each operation terminal 7, and when screen projection data of other application APPs are selected, reminding of screen projection data of the application APP to be replaced is provided, so that accidental screen projection playing of other application APP contents of the operation terminals 7 is avoided.
When the number of the connected operation terminals 7 is smaller than the transmission channels of the communication transmission unit 1, that is, the number of the split screens of the display is smaller, the remaining split screens of the display are used for playing other screen-casting contents of the same operation terminal, and meanwhile, when second screen-casting data is cast, a cast prompt is arranged on the corresponding split screens of the display, so that the problem of accidental screen casting is solved.
The communication transmission unit 1 establishes communication connection with a single operation terminal 7 at one time, a plurality of screen projection data of the operation terminal 7 are transmitted through the transmission channels which are uniquely corresponding, and the number of the transmission channels is less than or equal to the number of the display split screens of the display split screen control unit.
This embodiment selects the application APP that is used for throwing the screen through authorization control unit 8, the application APP that opens in order throws the screen respectively in the display branch screen of order reference numeral, and utilize data identification unit 3 discernment interim gallery store and receive the application APP data of transmission in every interim gallery of unit 2, after every interim gallery all has the application APP data that is used for throwing the screen, then single operation terminal 7 can't select other authorized application APPs to throw the screen, need the manual selection of user to withdraw from application APP, and reselect the application APP that is used for throwing the screen.
Through the above operation, the present embodiment can also solve the defect that the operation content is also displayed on the screen when the user performs other operations on the screen.
In addition, as another advantage of the present embodiment, the split screen position of the display where the screen projection data of the present embodiment is located is not fixed, but the split screen size of the display and the screen projection data of the split screen of the display can be adjusted according to the requirement, so that the operation of projecting a plurality of screen projection data to a single operation terminal 7 ensures that the current screen projection data is in the split screen with the maximum size, and when the screen projection data are displayed to a plurality of operation terminals 7 at the same time, the position of the screen projection data can be changed, so as to facilitate screen projection demonstration and increase flexibility.
In addition, as shown in fig. 2, the invention also provides a screen projection control method of the all-in-one machine, which comprises the following steps:
and step 100, establishing communication connection between a single operation terminal or a plurality of operation terminals and a communication transmission unit of the all-in-one machine respectively.
And 200, selecting screen projection data for data transmission with the communication transmission unit through the authorization control unit, and controlling the replacement of screen projection contents by monitoring the screen projection data in the communication transmission unit.
And 300, correspondingly sending each screen projection data to a temporary stack storage unit through a unique transmission channel, and projecting each screen projection data to a display for split screen playing according to the tree-shaped selection activity corresponding relation.
In step 300, the specific implementation steps of correspondingly delivering different screen-projecting data to the split screen of the display are as follows:
setting the labels of the split screens of the display according to the sequence;
and correspondingly throwing different screen throwing data to the display split screens with the sequence labels respectively according to the sequence of the time points of communication transmission.
That is, the meaning of the tree selection activity correspondence is specifically: when screen projection data are firstly projected, different screen projection data are respectively projected to the display split screens with the sequence labels according to the sequence of time points of communication transmission, and in the projection process, each display split screen is self-defined and is exchanged with another display split screen to project the screen data.
And step 400, adjusting the split screen size of each display, and adjusting the screen projection data of each display in real time.
In step 400, the size of each split screen of the display is customized according to the requirement to display different screen projection data, wherein the mode of adjusting the split screen of the display can be realized by using the prior art, and the implementation mode of adjusting the screen projection data of each split screen of the display is divided into two situations:
the first type is that a plurality of applications APP are utilized to carry out screen projection display operation on a single operation terminal, and the second type is that a plurality of operation terminals are utilized to respectively correspond to each display screen to carry out screen projection display work.
The specific implementation steps of putting the screen projection data of a single operation terminal on the split screen of the display are as follows:
selecting an application APP used by a single operation terminal for screen projection according to the number of split screens of the display;
according to the label sequence of the split screen of the display, sequentially opening the application APP according to the time sequence of establishing communication connection, wherein the opening sequence of the application APP corresponds to the label sequence of the split screen of the display one by one;
selecting an application APP currently used for screen projection of a single operation terminal in a self-defined mode, and suspending information transmission except for the temporary stack channel storage unit of the previous application APP;
and monitoring the information transmission condition in the temporary storage unit of the stack way in real time, and switching the screen projection data of the application APP which is being transmitted and the screen projection data of the application APP which is suspended and projected in the largest split screen of the display.
In addition, the specific implementation steps of putting the screen throwing data of the plurality of operation terminals on the split screen of the display are as follows:
selecting an operation terminal for screen projection according to the number of split screens of the display;
according to the label sequence of the split screen of the display, sequentially opening the application APP of each operation terminal according to the time sequence of establishing communication connection, wherein the opening sequence of the application APP corresponds to the label sequence of the split screen of the display one by one;
tree-shaped links between each display split screen and the other operation terminals except the current operation terminal are arranged in each display split screen, and the other operation terminal is selected in each display split screen;
and screen-split exchanging is carried out on the screen-split data of the operation terminal of the current display and the screen-split data of the display corresponding to the selected screen-split data of the other operation terminal.
The split screen position of the display where the screen projection data are located is not fixed and unchangeable, but the split screen size of the display and the screen projection data of the split screen of the display can be adjusted according to requirements, so that a plurality of operations of the screen projection data are put in a single operation terminal, the current screen projection data are ensured to be located in the split screen with the largest size, when the screen projection data are displayed simultaneously on a plurality of operation terminals, the position of the screen projection data can be changed, the size of each split screen of the display does not need to be adjusted back and forth, the screen projection demonstration is facilitated, and the flexibility is improved.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (6)
1. A screen projection control method of an all-in-one machine with a screen projection function comprises the following steps: the communication transmission unit (1) is used for connecting with an operation terminal (7) in the same local area network and establishing communication connection with the operation terminal (7); the temporary stack channel storage unit (2) is used for receiving a plurality of screen projection data simultaneously, each temporary stack channel only receives one screen projection data at a time and distributes all the screen projection data to different temporary stack channels in sequence; the data identification unit (3) is used for identifying the data transmission on-off and the data type of the screen projection data in each temporary stack channel and automatically matching the screen projection data playing plug-in unit according to the data type of the screen projection data; the display split screen control unit (4) is used for automatically controlling the split screen quantity according to the screen projection data identification result in all the temporary stack lanes by the data identification unit (3) and establishing the corresponding relation of the screen projection data and the tree-shaped selection activities of the display split screen; the display size regulating and controlling unit (5) is used for regulating the size of each screen of the split screens of the display; the screen switching unit (6) is used for adaptively switching the playing content of each screen according to the tree-shaped selection activity corresponding relation; the method is characterized by comprising the following steps:
step 100, establishing communication connection between a single operation terminal or a plurality of operation terminals and a communication transmission unit of the all-in-one machine respectively;
200, selecting screen projection data for data transmission with a communication transmission unit through an authorization control unit;
step 300, correspondingly sending each screen projection data to a temporary stack storage unit through a unique transmission channel, and projecting each screen projection data to a display for split-screen playing according to a tree-shaped selection activity corresponding relation;
in step 300, the specific implementation steps of correspondingly delivering different screen-projecting data to the split screen of the display are as follows:
setting the labels of the split screens of the display according to the sequence;
correspondingly throwing different screen throwing data to the split screens of the display with the sequence labels respectively according to the sequence of the time points of communication transmission;
when the screen projection data are firstly projected, different screen projection data are respectively projected on the display split screens with the sequence labels according to the sequence of time points of communication transmission, and in the projection process, each display split screen is customized and the screen projection data are exchanged with another display split screen;
and step 400, adjusting the split screen size of each display, and adjusting the screen projection data of each display in real time.
2. The screen projection control method of the all-in-one machine with the screen projection function according to claim 1, characterized in that: operation terminal (7) are confirmed through authorization control unit (8) be used for throwing the application APP of screen in operation terminal (7), operation terminal (7) with after communication transmission unit (1) set up communication connection, operation terminal (7) are opened and are established communication connection when using APP, the screen data of throwing of using APP passes through communication transmission unit (1) the mode of wired transmission or wireless transmission is sent temporary stack way storage unit (2).
3. The screen projection control method of the all-in-one machine with the screen projection function according to claim 2, characterized in that: the communication transmission unit (1) establishes communication connection with the operation terminals (7) at one time, screen projection data of each operation terminal (7) are transmitted through a unique transmission channel, and the number of the transmission channels is less than or equal to the number of the display split screens of the display split screen control unit (4) so as to determine screen projection content of each display split screen.
4. The screen projection control method of the all-in-one machine with the screen projection function according to claim 2, characterized in that: the communication transmission unit (1) establishes communication connection with the single operation terminal (7) at one time, a plurality of screen projection data of the operation terminal (7) are transmitted through uniquely corresponding transmission channels, and the number of the transmission channels is less than or equal to the number of the display split screens of the display split screen control unit so as to determine the screen projection content of each display split screen.
5. The screen projection control method of the all-in-one machine with the screen projection function according to claim 1, wherein in step 400, the screen projection data of each display is customized according to the requirement to display different screen projection data, and the specific implementation steps of projecting the screen projection data of a single operation terminal on the screen of the display are as follows:
selecting an application APP used by a single operation terminal for screen projection according to the number of split screens of the display;
according to the label sequence of the split screen of the display, sequentially opening the application APP according to the time sequence of establishing communication connection, wherein the opening sequence of the application APP corresponds to the label sequence of the split screen of the display one by one;
selecting an application APP currently used for screen projection of a single operation terminal in a self-defined mode, and suspending information transmission except for the temporary stack channel storage unit of the previous application APP;
and monitoring the information transmission condition in the temporary storage unit of the stack way in real time, and switching the screen projection data of the application APP which is being transmitted and the screen projection data of the application APP which is suspended and projected in the largest split screen of the display.
6. The screen projection control method of the all-in-one machine with the screen projection function according to claim 5, wherein in step 400, the specific implementation steps of projecting the screen projection data of the plurality of operation terminals on the display screen split are as follows:
selecting an operation terminal for screen projection according to the number of split screens of the display;
according to the label sequence of the split screen of the display, sequentially opening the application APP of each operation terminal according to the time sequence of establishing communication connection, wherein the opening sequence of the application APP corresponds to the label sequence of the split screen of the display one by one;
tree-shaped links between each display split screen and the other operation terminals except the current operation terminal are arranged in each display split screen, and the other operation terminal is selected in each display split screen;
and screen-split exchanging is carried out on the screen-split data of the operation terminal of the current display and the screen-split data of the display corresponding to the selected screen-split data of the other operation terminal.
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