CN105094732A - Screen display method and apparatus - Google Patents
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- CN105094732A CN105094732A CN201510367382.6A CN201510367382A CN105094732A CN 105094732 A CN105094732 A CN 105094732A CN 201510367382 A CN201510367382 A CN 201510367382A CN 105094732 A CN105094732 A CN 105094732A
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Abstract
The invention discloses a screen display method and apparatus, and belongs to the technical field of terminals. The method comprises receiving a special communication signal of a second terminal; determining a distance between the second terminal and a first terminal according to the special communication signal; establishing an appointed transmission connection between the first terminal and the second terminal, if the distance between the second terminal and the first terminal is less than a preset threshold; sending images displayed on a screen of the first terminal to the second terminal based on the appointed transmission connection, to make the second terminal display the image displayed on the screen. In the method, the distance between terminals is used as a condition that triggers terminal to share a screen, when the distance is less than the preset threshold, a terminal initiatively shares its screen to a terminal within the distance, so that malicious connection can be avoided and all manually operation for shearing a screen can be avoided, and the operation efficiency can be greatly raised.
Description
Technical field
The disclosure relates to field of terminal technology, particularly relates to a kind of screen display method and device.
Background technology
Along with the development of terminal technology, increasing terminal starts to support screen projection function.Throwing screen refers to and the screen display of a terminal is sent to another terminal by network connection, and this terminal is shown the screen display content of other-end on self screen.
When former terminal display is limited, this throwing screen mode can change the size of display size, can also realize many people and jointly watch, for the scene such as home entertaining, office meeting all provides the good screen display method of a kind of display effect.
Summary of the invention
For overcoming Problems existing in correlation technique, the disclosure provides a kind of screen display method and device.
According to the first aspect of disclosure embodiment, provide a kind of screen display method, the method is applied to first terminal, comprising:
Receive the specific communication signal of the second terminal;
According to described specific communication signal, determine the distance between described second terminal and described first terminal;
When distance between described second terminal and first terminal is less than predetermined threshold value, described first terminal is set up and is connected with the given transmission between described second terminal;
Connect based on described given transmission, the display image screen of described first terminal is sent to described second terminal, described second terminal is shown described display image screen.
In the first possibility implementation that disclosure embodiment provides, connect based on described given transmission, the display image screen of described first terminal be sent to described second terminal and comprise:
Connected by described given transmission, described first terminal and described second terminal are carried out display and are consulted;
According to negotiation result, the display image screen of described first terminal is processed;
Connected by described given transmission, the display image screen of the described first terminal after process is sent to described second terminal.
In the second possibility implementation that disclosure embodiment provides, when the distance between described second terminal and first terminal is less than predetermined threshold value, described first terminal foundation is connected with the given transmission between described second terminal and comprises:
When distance between described second terminal and first terminal is less than predetermined threshold value, if described first terminal is connected with the built vertical given transmission of third terminal, disconnects and being connected with the given transmission between described third terminal;
Described first terminal is set up and is connected with the given transmission between described second terminal.
In the third possibility implementation that disclosure embodiment provides, when distance between described second terminal and first terminal is less than predetermined threshold value, if described second terminal is not in open state, sends start-up command to described second terminal, make described second starting up of terminal.
In the 4th kind of possibility implementation that disclosure embodiment provides, described second terminal is the terminal to be connected that first terminal pre-sets.
According to the second aspect of disclosure embodiment, a kind of screen display device is provided, comprises:
Receiver module, for receiving the specific communication signal of the second terminal;
Distance determination module, for according to described specific communication signal, determines the distance between described second terminal and described first terminal;
Connection establishment module, when being less than predetermined threshold value for the distance between described second terminal and first terminal, described first terminal is set up and is connected with the given transmission between described second terminal;
Sending module, for connecting based on described given transmission, is sent to described second terminal by the display image screen of described first terminal, and described second terminal is shown described display image screen.
In the first possibility implementation that disclosure embodiment provides, described sending module is used for being connected by described given transmission, and described first terminal and described second terminal are carried out display and consulted; According to negotiation result, the display image screen of described first terminal is processed; Connected by described given transmission, the display image screen of the described first terminal after process is sent to described second terminal.
In the second possibility implementation that disclosure embodiment provides, when the described connection establishment module distance be used between described second terminal and first terminal is less than predetermined threshold value, if described first terminal is connected with the built vertical given transmission of third terminal, disconnects and being connected with the given transmission between described third terminal; Described first terminal is set up and is connected with the given transmission between described second terminal.
In the third possibility implementation that disclosure embodiment provides, when the described sending module distance be used between described second terminal and first terminal is less than predetermined threshold value, if described second terminal is not in open state, send start-up command to described second terminal, make described second starting up of terminal.
In the 4th kind of possibility implementation that disclosure embodiment provides, described second terminal is the terminal to be connected that first terminal pre-sets.
The third aspect, additionally provides a kind of device for screen display, comprising:
Processor;
For the storer of the executable instruction of storage of processor;
Wherein, described processor is configured to:
Receive the specific communication signal of the second terminal;
According to described specific communication signal, determine the distance between described second terminal and this terminal;
When distance between described second terminal and described terminal is less than predetermined threshold value, sets up and be connected with the given transmission between described second terminal;
Connect based on described given transmission, the display image screen of described terminal is sent to described second terminal, described second terminal is shown described display image screen.
The technical scheme that embodiment of the present disclosure provides can comprise following beneficial effect: by carrying out the condition of throwing screen operation using the distance between terminal as triggering terminal, when distance is less than predetermined threshold value, then initiatively initiated to throw screen to the terminal in this distance by terminal, thus while avoiding malice to connect, avoiding the various manual operations needed to carry out throwing screen display to show, substantially increasing operating efficiency.
Should be understood that, it is only exemplary and explanatory that above general description and details hereinafter describe, and can not limit the disclosure.
Accompanying drawing explanation
Accompanying drawing to be herein merged in instructions and to form the part of this instructions, shows and meets embodiment of the present disclosure, and is used from instructions one and explains principle of the present disclosure.
Fig. 1 is the process flow diagram of a kind of screen display method according to an exemplary embodiment.
Fig. 2 is the process flow diagram of a kind of screen display method according to an exemplary embodiment.
Fig. 3 is the block diagram of a kind of screen display device according to an exemplary embodiment.
Fig. 4 is the block diagram of a kind of device 400 for screen display according to an exemplary embodiment.
Embodiment
For making object of the present disclosure, technical scheme and advantage clearly, below in conjunction with accompanying drawing, disclosure embodiment is described in further detail.
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the disclosure.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that aspects more of the present disclosure are consistent.
Fig. 1 is the process flow diagram of a kind of screen display method according to an exemplary embodiment, and as shown in Figure 1, the method is used for, in first terminal, comprising the following steps.
In step S101, receive the specific communication signal of the second terminal.
In step s 102, according to described specific communication signal, determine the distance between described second terminal and described first terminal.
In step s 103, when the distance between described second terminal and first terminal is less than predetermined threshold value, described first terminal is set up and is connected with the given transmission between described second terminal.
In step S104, connect based on described given transmission, the display image screen of described first terminal is sent to described second terminal, described second terminal is shown described display image screen.
The method that disclosure embodiment provides, by carrying out the condition of throwing screen operation using the distance between terminal as triggering terminal, when distance is less than predetermined threshold value, then initiatively initiated to throw screen to the terminal in this distance by terminal, thus while avoiding malice to connect, avoiding the various manual operations needed to carry out throwing screen display to show, substantially increasing operating efficiency.
In the first possibility implementation that disclosure embodiment provides, connect based on described given transmission, the display image screen of described first terminal be sent to described second terminal and comprise:
Connected by described given transmission, described first terminal and described second terminal are carried out display and are consulted;
According to negotiation result, the display image screen of described first terminal is processed;
Connected by described given transmission, the display image screen of the described first terminal after process is sent to described second terminal.
In the second possibility implementation that disclosure embodiment provides, when the distance between described second terminal and first terminal is less than predetermined threshold value, described first terminal foundation is connected with the given transmission between described second terminal and comprises:
When distance between described second terminal and first terminal is less than predetermined threshold value, if described first terminal is connected with the built vertical given transmission of third terminal, disconnects and being connected with the given transmission between described third terminal;
Described first terminal is set up and is connected with the given transmission between described second terminal.
In the third possibility implementation that disclosure embodiment provides, when distance between described second terminal and first terminal is less than predetermined threshold value, if described second terminal is not in open state, sends start-up command to described second terminal, make described second starting up of terminal.
In the 4th kind of possibility implementation that disclosure embodiment provides, described second terminal is the terminal to be connected that first terminal pre-sets.
Above-mentioned all alternatives, can adopt and combine arbitrarily formation embodiment of the present disclosure, this is no longer going to repeat them.
Fig. 2 is the process flow diagram of a kind of screen display method according to an exemplary embodiment, and as shown in Figure 2, the method, for being described alternately between first terminal and the second terminal, specifically comprises the following steps.
In step s 201, first terminal receives the specific communication signal of the second terminal.
In the disclosed embodiments, this second terminal can refer to certain particular terminal, in the same area, can have multiple terminal, each terminal all can send specific communication signal, but, in order to clearly throw the object of screen operation, first terminal user can be arranged in advance on first terminal can as second terminal of throwing screen object, and that is to say, this second terminal can be the terminal to be connected pre-set.
Certainly, this terminal to be connected pre-set can be multiple, and first terminal can safeguard a list comprising multiple second terminals, when receiving the specific communication signal of any one the second terminal in this list, performs step S202.
In step S202, according to described specific communication signal, first terminal determines the distance between described second terminal and described first terminal.
In above-mentioned steps S201-S202, for terminal, this first terminal and the second terminal can have the ability sending and receive specific communication signal, so that other-end finds mutually and connects.As, terminal can be configured with bluetooth module, and bluetooth module, based on bluetooth BLE technology, can be communicated with other-end by the mode of transmission broadcast packet, reception broadcast packet.
In the disclosed embodiments, specific communication signal can be broadcast packet.The emissive power of transmitting apparatus can be comprised in the broadcast packet that terminal sent or received.When any one terminal receives broadcast packet, according to emissive power included in the signal intensity of its broadcast packet and broadcast packet, the terminal and the distance of self that send this broadcast packet can be determined.
It should be noted that, above-mentioned steps needs all to open under bluetooth module carries out the scene scanned transceiver terminal both sides to carry out, when any terminal have sent specific communication signal scan, return the specific communication signal scanresponse for responding by the terminal receiving this specific communication signal.
In step S203, when the distance between described second terminal and first terminal is less than predetermined threshold value, described first terminal is set up and is connected with the given transmission between described second terminal.
When distance between the second terminal and first terminal is less than predetermined threshold value, can determine that first terminal user has been positioned at the certain limit of the second terminal, therefore, malice can be avoided to connect.This predetermined threshold value can be pre-set by first terminal or the second terminal, and disclosure embodiment does not do concrete restriction to this.
In the disclosed embodiments, this given transmission connects can be that SPP connects.This SPP connects the mode can setting up non-security point-to-point connection, does not need user's manual pairings.
In another embodiment of the present disclosure, current second terminal also may not be in open state, and be only carried out the transmission of specific communication signal in the standby state, then first terminal can send start-up command to the second terminal, make the second terminal when receiving start-up command, Auto Power On, after the second starting up of terminal, first terminal is set up given transmission with the second terminal and is connected.That is to say, in this process, opening the application for realizing throwing screen without the need to the second terminal, namely by first terminal side by order second starting up of terminal, and the given transmission connection between two terminals can be set up.
Wherein, this given transmission connects can refer to that WiFidisplay connects, in this WiFidisplay connects, first terminal can as client (Client), second terminal can as server end (Server), in a possibility implementation, first terminal can be mobile phone, panel computer or PC etc., and the second terminal can be TV, projector etc.
In another embodiment that the disclosure provides, current first terminal also may be in built vertical given transmission with a third terminal and be connected, and the state of carrying out Image Sharing transmission is connected based on this given transmission, and the movement that there occurs due to first terminal on position, when causing the distance between current first terminal and the second terminal to be less than predetermined threshold value, then disconnect and being connected with the given transmission between described third terminal, set up again and be connected with the given transmission between described second terminal, switch with the change of following customer location and throw screen object.Such as, based on such process, when the adept machine of user shields at a TV upslide, then hold mobile phone and gone on another TV limit, mobile phone shields on new TV with regard to automatic switching, and the switching making it possible to namely can realize between multiple different display device without the need to any operation shows.
In step S204, connected by described given transmission, described first terminal and described second terminal are carried out display and are consulted.
After establishing given transmission connection, parameter etc. can be shielded hold consultation based on specifically throwing between first terminal and the second terminal, as first terminal knows the throwing screen parameter of the second terminal, and determine that the disclosure is not construed as limiting this negotiations process from the process parameter etc. in throwing screen process based on this throwing screen parameter.
It should be noted that, in step S203, as long as determine distance to be less than predetermined threshold value, then the display initiatively being initiated in without the need to manually operated situation to connect based on given transmission by first terminal is consulted, and eliminates the process that user needs manually to initiate to throw screen.
In step S205, according to negotiation result, the display image screen of described first terminal is processed.
This negotiation result can relate to all many-sides such as processing data packets, Packet Generation and display size, and disclosure embodiment is not construed as limiting this.First terminal based on this negotiation result, can carry out the process such as screenshotss to self current shown image, thus obtains current screen display image, then through process such as overcompression, to obtain the data for transmitting.
In step S206, connected by described given transmission, the display image screen of the described first terminal after process is sent to described second terminal.
This is specifically consulted and image processing process can also have other implementations, and disclosure embodiment is not done and specifically repeated.
In step S207, the second terminal receives this display image screen, and shows based on the image received.
Be that the image of first terminal is sent to the second terminal at above-mentioned steps S206 and S207, with the process making the second terminal can show the image identical with first terminal.Certainly, the display size of usual second terminal is greater than first terminal, to reach the effect that many people share information.
Fig. 3 is the block diagram of a kind of screen display device according to an exemplary embodiment.With reference to Fig. 3, this device comprises receiver module 301, distance determination module 302, connection establishment module 303 and sending module 304.
Receiver module 301, for receiving the specific communication signal of the second terminal;
Distance determination module 302, for according to described specific communication signal, determines the distance between described second terminal and described first terminal;
Connection establishment module 303, when being less than predetermined threshold value for the distance between described second terminal and first terminal, described first terminal is set up and is connected with the given transmission between described second terminal;
Sending module 304, for connecting based on described given transmission, is sent to described second terminal by the display image screen of described first terminal, and described second terminal is shown described display image screen.
In a kind of possibility implementation, described sending module 304 is for connecting by described given transmission, and described first terminal and described second terminal are carried out display and consulted; According to negotiation result, the display image screen of described first terminal is processed; Connected by described given transmission, the display image screen of the described first terminal after process is sent to described second terminal.
In another kind of possibility implementation, when described connection establishment module 303 is less than predetermined threshold value for the distance between described second terminal and first terminal, if described first terminal is connected with the built vertical given transmission of third terminal, disconnects and being connected with the given transmission between described third terminal; Described first terminal is set up and is connected with the given transmission between described second terminal.
In another possibility implementation, when described sending module 304 is also less than predetermined threshold value for the distance between described second terminal and first terminal, if described second terminal is not in open state, sends start-up command to described second terminal, make described second starting up of terminal.
In another possibility implementation, described second terminal is the terminal to be connected that first terminal pre-sets.
About the device in above-described embodiment, wherein the concrete mode of modules executable operations has been described in detail in about the embodiment of the method, will not elaborate explanation herein.
Fig. 4 is the block diagram of a kind of device 400 for screen display according to an exemplary embodiment.Such as, device 400 can be mobile phone, computing machine, digital broadcast terminal, messaging devices, game console, tablet device, Medical Devices, body-building equipment, personal digital assistant etc.
With reference to Fig. 4, device 400 can comprise following one or more assembly: processing components 402, storer 404, power supply module 406, multimedia groupware 408, audio-frequency assembly 410, the interface 412 of I/O (I/O), sensor module 414, and communications component 416.
The integrated operation of the usual control device 400 of processing components 402, such as with display, call, data communication, camera operation and record operate the operation be associated.Treatment element 402 can comprise one or more processor 420 to perform instruction, to complete all or part of step of above-mentioned method.In addition, processing components 402 can comprise one or more module, and what be convenient between processing components 402 and other assemblies is mutual.Such as, processing element 402 can comprise multi-media module, mutual with what facilitate between multimedia groupware 408 and processing components 402.
Storer 404 is configured to store various types of data to be supported in the operation of equipment 400.The example of these data comprises for any application program of operation on device 400 or the instruction of method, contact data, telephone book data, message, picture, video etc.Storer 404 can be realized by the volatibility of any type or non-volatile memory device or their combination, as static RAM (SRAM), Electrically Erasable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory EPROM (EPROM), programmable read only memory (PROM), ROM (read-only memory) (ROM), magnetic store, flash memory, disk or CD.
The various assemblies that electric power assembly 406 is device 400 provide electric power.Electric power assembly 406 can comprise power-supply management system, one or more power supply, and other and the assembly generating, manage and distribute electric power for device 400 and be associated.
Multimedia groupware 408 is included in the screen providing an output interface between described device 400 and user.In certain embodiments, screen can comprise liquid crystal display (LCD) and touch panel (TP).If screen comprises touch panel, screen may be implemented as touch-screen, to receive the input signal from user.Touch panel comprises one or more touch sensor with the gesture on sensing touch, slip and touch panel.Described touch sensor can the border of not only sensing touch or sliding action, but also detects the duration relevant to described touch or slide and pressure.In certain embodiments, multimedia groupware 408 comprises a front-facing camera and/or post-positioned pick-up head.When equipment 400 is in operator scheme, during as screening-mode or video mode, front-facing camera and/or post-positioned pick-up head can receive outside multi-medium data.Each front-facing camera and post-positioned pick-up head can be fixing optical lens systems or have focal length and optical zoom ability.
Audio-frequency assembly 410 is configured to export and/or input audio signal.Such as, audio-frequency assembly 410 comprises a microphone (MIC), and when device 400 is in operator scheme, during as call model, logging mode and speech recognition mode, microphone is configured to receive external audio signal.The sound signal received can be stored in storer 404 further or be sent via communications component 416.In certain embodiments, audio-frequency assembly 410 also comprises a loudspeaker, for output audio signal.
I/O interface 412 is for providing interface between processing components 402 and peripheral interface module, and above-mentioned peripheral interface module can be keyboard, some striking wheel, button etc.These buttons can include but not limited to: home button, volume button, start button and locking press button.
Sensor module 414 comprises one or more sensor, for providing the state estimation of various aspects for device 400.Such as, sensor module 414 can detect the opening/closing state of equipment 400, the relative positioning of assembly, such as described assembly is display and the keypad of device 400, the position of all right pick-up unit 400 of sensor module 414 or device 400 1 assemblies changes, the presence or absence that user contacts with device 400, the temperature variation of device 400 orientation or acceleration/deceleration and device 400.Sensor module 414 can comprise proximity transducer, be configured to without any physical contact time detect near the existence of object.Sensor module 414 can also comprise optical sensor, as CMOS or ccd image sensor, for using in imaging applications.In certain embodiments, this sensor module 414 can also comprise acceleration transducer, gyro sensor, Magnetic Sensor, pressure transducer or temperature sensor.
Communications component 416 is configured to the communication being convenient to wired or wireless mode between device 400 and other equipment.Device 400 can access the wireless network based on communication standard, as WiFi, 2G or 3G, or their combination.In one exemplary embodiment, communication component 416 receives from the broadcast singal of external broadcasting management system or broadcast related information via broadcast channel.In one exemplary embodiment, described communication component 416 also comprises near-field communication (NFC) module, to promote junction service.Such as, can based on radio-frequency (RF) identification (RFID) technology in NFC module, Infrared Data Association (IrDA) technology, ultra broadband (UWB) technology, bluetooth (BT) technology and other technologies realize.
In the exemplary embodiment, device 400 can be realized, for performing said method by one or more application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD) (PLD), field programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic components.
In the exemplary embodiment, additionally provide a kind of non-transitory computer-readable recording medium comprising instruction, such as, comprise the storer 404 of instruction, above-mentioned instruction can perform said method by the processor 420 of device 400.Such as, described non-transitory computer-readable recording medium can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and optical data storage devices etc.
In the exemplary embodiment, additionally provide a kind of non-transitory computer-readable recording medium, when the instruction in described storage medium is performed by the processor of mobile terminal, a kind of screen display method making mobile terminal can perform above-described embodiment to provide.
Those skilled in the art, at consideration instructions and after putting into practice invention disclosed herein, will easily expect other embodiment of the present disclosure.The application is intended to contain any modification of the present disclosure, purposes or adaptations, and these modification, purposes or adaptations are followed general principle of the present disclosure and comprised the undocumented common practise in the art of the disclosure or conventional techniques means.Instructions and embodiment are only regarded as exemplary, and true scope of the present disclosure and spirit are pointed out by claim below.
Should be understood that, the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and can carry out various amendment and change not departing from its scope.The scope of the present disclosure is only limited by appended claim.
Claims (11)
1. a screen display method, is characterized in that, the method is applied to first terminal, and described method comprises:
Receive the specific communication signal of the second terminal;
According to described specific communication signal, determine the distance between described second terminal and described first terminal;
When distance between described second terminal and first terminal is less than predetermined threshold value, described first terminal is set up and is connected with the given transmission between described second terminal;
Connect based on described given transmission, the display image screen of described first terminal is sent to described second terminal, described second terminal is shown described display image screen.
2. method according to claim 1, is characterized in that, connects based on described given transmission, the display image screen of described first terminal is sent to described second terminal and comprises:
Connected by described given transmission, described first terminal and described second terminal are carried out display and are consulted;
According to negotiation result, the display image screen of described first terminal is processed;
Connected by described given transmission, the display image screen of the described first terminal after process is sent to described second terminal.
3. method according to claim 1, is characterized in that, when the distance between described second terminal and first terminal is less than predetermined threshold value, described first terminal foundation is connected with the given transmission between described second terminal and comprises:
When distance between described second terminal and first terminal is less than predetermined threshold value, if described first terminal is connected with the built vertical given transmission of third terminal, disconnects and being connected with the given transmission between described third terminal;
Described first terminal is set up and is connected with the given transmission between described second terminal.
4. method according to claim 1, is characterized in that, described method also comprises:
When distance between described second terminal and first terminal is less than predetermined threshold value, if described second terminal is not in open state, sends start-up command to described second terminal, make described second starting up of terminal.
5. method according to claim 1, is characterized in that, described second terminal is the terminal to be connected that first terminal pre-sets.
6. a screen display device, is characterized in that, this application of installation is in first terminal, and described device comprises:
Receiver module, for receiving the specific communication signal of the second terminal;
Distance determination module, for according to described specific communication signal, determines the distance between described second terminal and described first terminal;
Connection establishment module, when being less than predetermined threshold value for the distance between described second terminal and first terminal, described first terminal is set up and is connected with the given transmission between described second terminal;
Sending module, for connecting based on described given transmission, is sent to described second terminal by the display image screen of described first terminal, and described second terminal is shown described display image screen.
7. device according to claim 6, is characterized in that, described sending module is used for being connected by described given transmission, and described first terminal and described second terminal are carried out display and consulted; According to negotiation result, the display image screen of described first terminal is processed; Connected by described given transmission, the display image screen of the described first terminal after process is sent to described second terminal.
8. device according to claim 6, it is characterized in that, when the described connection establishment module distance be used between described second terminal and first terminal is less than predetermined threshold value, if described first terminal is connected with the built vertical given transmission of third terminal, disconnects and being connected with the given transmission between described third terminal; Described first terminal is set up and is connected with the given transmission between described second terminal.
9. device according to claim 6, it is characterized in that, when described sending module is also less than predetermined threshold value for the distance between described second terminal and first terminal, if described second terminal is not in open state, send start-up command to described second terminal, make described second starting up of terminal.
10. device according to claim 6, is characterized in that, described second terminal is the terminal to be connected that first terminal pre-sets.
11. 1 kinds for the device of screen display, is characterized in that, comprising:
Processor;
For the storer of the executable instruction of storage of processor;
Wherein, described processor is configured to:
Receive the specific communication signal of the second terminal;
According to described specific communication signal, determine the distance between described second terminal and this terminal;
When distance between described second terminal and described terminal is less than predetermined threshold value, sets up and be connected with the given transmission between described second terminal;
Connect based on described given transmission, the display image screen of described terminal is sent to described second terminal, described second terminal is shown described display image screen.
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