WO2018120448A1 - Method and apparatus for controlling large-screen display device - Google Patents

Abstract

A method for controlling a large-screen display device, comprising: acquiring a touch request of a smart pen on a display screen (S110); popping up, according to the touch request, a covering layer on the display screen (S120); acquiring, on the covering layer, at least one touch track of the smart pen (S130); popping up, on the display screen, a display box corresponding to the touch track (S140); and acquiring, in the display box, a corresponding touch operation (S150). When a large display device is used, display interfaces of a plurality of application functions can be displayed simultaneously by means of the smart pen.

Description

Control method and control device for large screen display device Technical field

Embodiments of the present invention relate to the field of computer technologies, and in particular, to a control method and a control apparatus for a large-screen display device.

Background technique

With the development of technology, intelligent display devices have entered people's daily lives. Among them, a display device with a display screen exceeding 50 inches can be called a large screen display device. Large-screen display devices can be used for office, teaching, and publicity. For example, a video conferencing device or a teaching playback device.

During the use of the display device, if the user wants to implement the function of an application, after the application is opened, the display screen only displays the display interface of the application, so that the user can perform the operation, and the functions of other applications cannot be performed at this time. achieve. For example, if the user wants to implement the function of the electronic whiteboard in the terminal, after the electronic whiteboard function is turned on, the display interface all becomes a whiteboard interface, and the user can perform operations such as writing in the interface. At this point, if the user wants to call other functions, he needs to close the whiteboard interface before performing other operations.

Summary of the invention

In view of this, an embodiment of the present invention provides a control method and a control device for a large-screen display device, so as to implement a display interface for simultaneously displaying a plurality of application functions when a large-screen display device is used.

In a first aspect, an embodiment of the present invention provides a control method for a large-screen display device, including:

Obtaining a touch request of the smart pen on the display screen;

Popping a layer on the display screen according to the touch request;

Obtaining at least one touch track of the smart pen on the mask layer;

Displaying a display frame corresponding to the touch track one by one on the display screen;

A corresponding touch operation is obtained in the display frame.

In a second aspect, the embodiment of the present invention further provides a control device for a large-screen display device, including:

Requesting an acquisition module for obtaining a touch request of the smart pen on the display screen;

a masking module for popping a mask layer on the display screen according to the touch request;

a trajectory acquiring module, configured to acquire at least one touch trajectory of the smart pen on the smear layer;

a display box ejecting module, configured to pop up a display frame corresponding to the touch track on the display screen;

An operation obtaining module is configured to obtain a corresponding touch operation in the display frame.

The control method and the control device for the large-screen display device provided by the embodiment of the present invention, by acquiring the touch request of the smart pen on the display screen, popping the mask layer on the display screen, and according to the smart pen touching on the mask layer At least one touch track, a display frame corresponding to the touch track is popped up on the display screen, and a corresponding touch operation method is obtained in the display frame, so that the touch operation is performed on the plurality of display frames in the display device by using the smart pen The technical effect is convenient for the user to delimit the display area of the display frame in the display screen according to his actual needs, and does not need to exit the display interface of the currently executing application.

DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the Detailed Description of Description

1 is a flowchart of a control method for a large-screen display device according to Embodiment 1 of the present invention;

2a is a flowchart of a method for controlling a large-screen display device according to Embodiment 2 of the present invention;

2b is a flowchart of a method for closing a mask layer according to Embodiment 2 of the present invention;

2c is a schematic diagram of a display screen according to Embodiment 2 of the present invention;

FIG. 2 is a schematic diagram of a display screen with a mask layer according to Embodiment 2 of the present invention; FIG.

2 e is a schematic diagram of a display screen with a virtual rectangular frame according to Embodiment 2 of the present invention;

2f is a schematic diagram of a display screen with a surface view according to Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a control apparatus for a large-screen display device according to Embodiment 3 of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It should also be noted that, for ease of description, only some, but not all, of the present invention are shown in the drawings.

Embodiment 1

FIG. 1 is a flowchart of a method for controlling a large-screen display device according to Embodiment 1 of the present invention. This embodiment is applicable to the case where at least one display frame is simultaneously displayed on the display screen of the large-screen display device. The control method for the large-screen display device provided by the embodiment may be performed by a control device for a large-screen display device, and the control device may be implemented by software and/or hardware and integrated in the large-screen display device.

Referring to FIG. 1, the control method for a large-screen display device provided by this embodiment specifically includes:

S110. Acquire a touch request of the smart pen on the display screen.

In this embodiment, the display device is a smart device with a touch screen, such as a teaching play device, a video conference device, and the like in a large screen display device.

Specifically, the touch request of the smart pen on the display screen is a request by the user to perform a touch operation on the display area by the smart pen.

Specifically, the display device and the smart pen are connected in advance through infrared, Bluetooth, wireless hotspot or wireless local area network, and can perform data interaction after synchronization. The user can operate the setting button of the smart pen to issue a touch request, wherein the setting button can be operated by clicking the button, double clicking the button, or long pressing the button. When the setting button of the smart pen receives the user operation, a corresponding button signal is generated, and the button signal is sent to the display device, and the display device determines whether the signal corresponding to the touch request is determined by parsing the button signal.

S120. Pop the mask layer on the display according to the touch request.

Exemplarily, the mask covers the current display. The mask can cover all of the display screens and can also be overlaid on some of the display screens. For example, according to the touch request, a mask covering all of the display screens is popped up on the display screen. For another example, according to the touch request, a mask layer is popped up on the display screen where no image is displayed on the display screen. The transparency, fill pattern, and color of the mask can be set according to the actual situation.

When the mask is popped up on the display, the user cannot operate on the display of the current application. That is, the pop-up mask is equivalent to locking the current display. After the mask is popped up, the user confirms that the touch track can be entered.

In general, in the actual application process, only the current display screen can be locked according to the touch request. The advantage of setting the pop-up mask is that the user can be prompted to display the current display screen, and the touch track can be input.

S130: Obtain at least one touch track of the smart pen on the mask layer.

Exemplarily, according to the touch operation of the smart pen on the mask layer, the touch position is obtained, thereby acquiring the touch track. Optionally, the smart pen can input at least one touch track. Among them, multiple touch tracks can be input at the same time, or one touch track can be input, and another touch track can be input. Further, the plurality of touch trajectories do not overlap each other, and if there are overlapping touch trajectories, the mutually overlapping touch trajectories are defaulted to the same touch trajectory.

The specific form of the touch track is not limited in this embodiment, and may be a diagonal, a circle, a rectangle, or a triangle.

Since the touch trajectory is acquired, it is impossible to discriminate whether or not the touch operation is issued by the smart pen based only on the touch operation on the smear layer. Therefore, when the touch operation is acquired, the synchronization signal of the smart pen is synchronously received, and the touch operation is determined according to the synchronization signal as a touch operation issued by the smart pen. The specific manner in which the smart pen sends a synchronization signal is not limited in this embodiment. For example, when it is detected that a certain button of the smart pen is continuously pressed, it is confirmed that the synchronization signal is received. For another example, when it is detected that the pressure value received by the pressure sensor provided on the tip of the smart pen is higher than a preset value, it is confirmed that the synchronization signal is received. If the synchronization signal is not received when the touch operation is acquired, the touch operation may not be the touch operation issued by the smart pen. At this time, the user may be prompted to use the smart pen to perform the touch operation, if it is not received within a certain period of time Synchronize the signal to turn off the mask.

Further, if the touch track is not acquired within a period of time after the mask is popped up, for example, within two minutes, the mask is closed. Alternatively, if the mask close command is received after the mask is popped, the mask is turned off according to the mask close command, and thereafter, the acquired touch track defaults to the user's operation on the current application display screen.

S140. A display frame corresponding to the touch track is popped up on the display screen.

Specifically, the corresponding display frame is determined according to each touch track, and the display is popped up in the display screen. Frame while closing the mask. The pop-up position of the display frame is the same as the capture position of the touch track.

Optionally, before the display box is popped up, you can first determine whether the display box meets the pop-up condition. If the pop-up condition is met, the corresponding display frame is popped up. If the pop-up condition is not met, the user is prompted to re-enter the touch track, and it is determined whether the display frame generated according to the touch track satisfies the pop-up condition. The determining whether the display frame meets the pop-up condition may be determining whether the size of the display frame satisfies the preset display frame size, or determining whether the display frame pop-up position already has a pop-up display frame.

The display frame popped up on the display screen is located on the same display layer as the mask layer, that is, over the current display screen, and can also be understood as floating display of the display frame on the display screen.

The display frame can be a surface view rectangular view frame. The advantage of using the surfaceview rectangular view box is that the function implementation in the display box does not affect the implementation of the functions in the main thread, and the response speed is accelerated when the functions of multiple applications are simultaneously implemented.

S150. Obtain a corresponding touch operation in the display box.

Specifically, a display screen that needs to execute an application is displayed in the display box, and a touch operation corresponding to the application is acquired.

Among them, the executable application can be determined according to the actual needs of the user, such as an electronic whiteboard, a calculator, a screenshot application, and a timer.

Optionally, when the touch command is input, the application corresponding to the display frame needs to be input together, or after the display frame is popped up, the application list appears in the set position of the display screen, and after obtaining the application selected by the user, determining the display The application that the box needs to execute. For example, if the user issues a touch command through the setting button of the smart pen and turns on the electronic whiteboard application, the display device displays the display screen of the electronic whiteboard in the pop-up display box. For another example, after the display box is popped up, the application list is displayed in the display box, and after the selection instruction is acquired, the application display screen corresponding to the selection instruction is displayed in the display box.

Further, the user can input different touch operations in different display boxes. At the same time, display The display area of the non-display frame continues to display the original display and continues to execute the original application. That is, the function of simultaneously responding to multiple applications in the display device is realized.

Wherein, when the touch operation acquired in the display box is a touch operation issued by the user using the smart pen, the display device needs to synchronously acquire a signal sent by the smart pen to determine that the touch operation is an operation issued by the smart pen.

Optionally, after the display device detects the exit instruction, the corresponding display frame is closed. The exit instruction is an instruction to close the display box, and the specific operation rule may be set according to actual conditions. For example, when detecting that the user clicks the exit button in the display box through the smart pen, it is determined that the exit instruction is detected. For another example, when it is detected that the user clicks the setting button of the interactive smart pen, it is determined that the exit instruction is detected.

Application scenario 1 of this embodiment

The user can use the large-screen display device to perform a video conference. When the sales plan of the product is displayed in the display screen, if the calculator is to be used to calculate the sales amount, the user can use the smart pen directly after using the control method provided in this embodiment. Select an area display calculator on the sales plan display screen and perform calculations. In the above process, it is not necessary to close the current display screen, and at the same time, the display screen can be turned up and down, exited, and the like.

Application scenario 2 of this embodiment

When the user uses the large-screen display device to teach, a certain courseware is displayed on the display screen. If the user wants to write an explanation, the user can directly use the smart pen to display the current courseware after using the control method provided by the embodiment. On the interface, the area is opened to enable the floating whiteboard function, writing in the electronic whiteboard, and after the explanation is completed, the electronic whiteboard is closed. In the above process, it is not necessary to close the courseware display interface, and at the same time, it is also possible to continue to page up and exit the courseware.

The technical solution provided by the embodiment provides a touch request on the display screen by acquiring a touch request of the smart pen, and pops up corresponding to the touch track on the display screen according to at least one touch track of the smart pen. The technical means for obtaining a corresponding touch operation in the display box realizes the technical effect of performing a touch operation on a plurality of display frames in the display device by using the smart pen, which facilitates the user to draw in the display screen according to his actual needs. The display area of the display box is fixed, and the desired application is opened in the display box, and the display interface of the currently executing application does not need to be exited.

Embodiment 2

2a is a flowchart of a method for controlling a large-screen display device according to Embodiment 2 of the present invention. This embodiment is embodied on the basis of the above embodiment. Referring to FIG. 2a, the control method provided in this embodiment specifically includes:

S201. Acquire a first button signal of the smart pen.

The specific form of the first button signal is not limited in this embodiment. For example, the first button signal is a signal generated when the setting button of the smart pen is pressed, and at this time, the signal carries information that the setting button is pressed. If the display device parses the acquired signal, and obtains information including that the set button is pressed in the signal, the signal is determined as the first button signal.

S202. Generate a touch request of the smart pen on the display screen according to the first button signal.

S203. Pop the mask layer on the display according to the touch request.

S204. Acquire at least one touch track on the mask layer.

S205. Determine whether the second button signal of the smart pen is synchronously received. If the second key signal of the smart pen is synchronously received, S207 is performed. Otherwise, S206.

Exemplarily, when the touch track is acquired on the mask layer, the display device only responds to the touch track sent by the smart pen, and the other touch tracks do not respond. Therefore, it is necessary to determine whether the touch track is a touch track issued by the smart pen. The specific manner of determining may be whether the second button signal of the smart pen is synchronously received, wherein the specific form of the second button signal may be related to the specific form of the first button signal. Same, it can be different.

It should be noted that S204 and S205 are performed synchronously. That is, when the display device acquires at least one touch track on the mask, it is determined whether the second button signal of the smart pen is synchronously received. Wherein, when the smart pen performs a touch operation on the mask layer, the display device can immediately detect the touch operation, and when the smart pen sends the second button signal, the display device needs to acquire the second button signal and analyze, so the display device first A touch operation is detected and then a second key signal is received. At this time, a time interval may be set. When the touch operation is detected, if the second button signal is received within the time interval, it is confirmed that the second button signal of the smart pen is synchronously received. If the second button signal is not received within the time interval, it is confirmed that the second button signal of the smart pen is not synchronously received.

S206, closing the mask.

Further, after closing the mask, the operation is exited.

Optionally, before the mask is closed, a prompt box may pop up to prompt the user that the current touch track is unrecognizable. Please input the touch track using a synchronized smart pen.

S207. Determine at least one touch track as at least one touch track of the smart pen.

S208. Determine a corresponding operation area according to each touch track.

Further, the operation area is a virtual display frame generated according to the touch track, that is, an area where the display frame is subsequently popped up. Optionally, the current operating area is displayed in real time in the display screen according to the touch track received in real time, so that the user determines the size and position of the display frame during the touch process. The operation area may be displayed in the form of a dotted rectangle in the current mask, or may be displayed in a rectangular frame of different fill colors in the current mask.

When the operation area is generated, the connection line between the first point of the touch track and the current point may be used as a diagonal line to generate an operation area, or the operation area may be generated according to the boundary point of the touch track, for example, determining the top position. The lowest, leftmost, and rightmost track points determine the operating area based on the above track points.

Further, when the display device stops receiving the second button signal, it is confirmed that the smart pen stops performing the touch operation, and at this time, the final operation region corresponding to the touch track determination is obtained.

S209. Determine whether the operation area is greater than or equal to a preset area size. If the operated area is greater than or equal to the preset area size, S210 is performed, and if the operation area is smaller than the preset area size, S213 is performed.

The preset area size is a minimum area for generating an operation area, which can be set according to actual conditions. If the operation area is greater than or equal to the preset area size, it indicates that the touch track input by the user can generate a display frame. If the operation area is smaller than the preset area size, it means that the touch track input by the user cannot generate a display frame.

S210, closing the mask. Execute S211.

S211. A display frame having the same size as the operation area is popped up on the display screen. Execution S212.

The pop-up position of the display frame is the same as the position of the operation area. That is, the display frame pops up at the position of the operation area.

S212. Obtain a corresponding touch operation in the display box.

S213. Prompt to re-enter the touch track. Return to execution S204.

Specifically, if the operation area is smaller than the preset area size, the user is prompted to re-enter the touch track, and the process returns to S204 until the size of the operation area generated according to the touch track is greater than or equal to the preset area size. The specific prompting manner may be at least one of closing an operation area, a pop-up prompt box, and a warning sound.

Based on the foregoing embodiment, referring to FIG. 2b, the control method may further include:

S214. Acquire a third button signal of the smart pen.

Optionally, the third button signal can be the same as the first button signal. For example, when the setting button of the smart pen is pressed for the first time, the first button signal is generated, and at this time, the display device is based on the first button signal. The mask layer is popped up, and when the setting button of the smart pen is pressed again, the third button signal is generated, and the display device performs subsequent operations according to the third button signal. It should be noted that the third button signal may also be different from the first button signal, and only needs to satisfy the difference between the third button signal and the second button signal. If the third button signal is the same as the second button signal, the display device is configured according to The received signal cannot distinguish whether the subsequent operation is to close the mask or display the touch track on the mask.

S215. Close the mask according to the third button signal.

For example, when the large-screen display device receives the signal that the first setting button of the smart pen is pressed, it is determined that the first button signal is received, and the mask layer is popped in the display screen according to the first button signal. Further, when the large-screen display device receives the signal that the second setting button of the smart pen is pressed, it is determined that the third button signal is received and the Mongolian city is turned off.

The following is an exemplary description of the control method provided by the present embodiment.

In this example, the display device is a 65-inch video teaching device, and the operating system is an Android system. The display device is also configured with a smart pen that has been synchronized and wirelessly connected via Bluetooth. The display device opens the presentation application and displays the courseware in the display. Among them, the display screen showing the teaching courseware is shown in Figure 2c.

Specifically, when the setting button of the smart pen is pressed by the user, the button signal is generated, and the button signal is transmitted to the display device through the Bluetooth signal. When the display device receives the button signal, it analyzes the button signal, determines that the button signal is the first button signal, and generates a touch request. According to the touch request, a mask is covered in full screen in the current display screen of the display screen. Referring to FIG. 2d, FIG. 2d is a layer covering the upper layer of the display screen of FIG. 2c with a transparency of 55%. 2d is only an exemplary display, and the display form of the mask in practical applications is not limited thereto.

After the mask is popped up, if the display device does not acquire the touch track and receives the cancellation request from the smart pen, the mask is cancelled. Wherein, the cancellation request is when the user presses the above setting button again, A pen-generated message.

After the mask is popped up, if the display device acquires the touch track of the smart pen, referring to FIG. 2e, the moving distance between the first writing point of the touch track 21 and the current writing point is diagonal 22, and a layer is generated on the mask layer. A dotted rectangle 23, the operating area. In practical applications, the diagonal 22 may not be displayed on the display screen. After the smart pen leaves the display screen, it is determined that the size of the dotted rectangular frame 23 is the final size. It is judged whether the size satisfies the set minimum area size. If it is satisfied, save the size of the area. If not, the dotted rectangle 23 is closed, and a prompt box is displayed prompting the user to re-enter the touch track.

Figure 2f is a schematic illustration of a surface view popped up in the display. Referring to FIG. 2f, after the size of the dotted rectangle frame 23 is saved, the mask layer is closed, and a surface rectangle view frame 24 equal in size to the dotted rectangle frame is popped up in the display screen, wherein the position of the surface rectangle view frame 24 and the dotted rectangle are displayed. Block 23 is displayed in the same position in the display.

Further, an application list (not shown) is displayed in the surface rectangle view box 24, and when the display device detects that the whiteboard application is selected, the selected message is sent to the whiteboard application in a broadcast manner, so that the whiteboard is applied to the surface. A corresponding display interface is displayed in the rectangular view frame 24. The user can write in the range of the surface rectangular view frame 24 through the smart pen, and the remaining positions of the display continue to display the teaching courseware. At this time, the user can not only write in the range of the surface rectangular view frame 24 through the smart pen, but also can continue to perform page turning and the like on the teaching courseware.

When it is detected that the close button 25 in the surface rectangle view frame 24 is clicked, the surface rectangle view frame 24 is closed, and the teaching courseware continues to be displayed at the position of the surface rectangle view frame 24.

The technical solution provided by the embodiment generates a touch request by acquiring the first button information of the smart pen, pops a mask layer on the display screen according to the touch request, and forms an operation area according to the touch track acquired in the mask layer, if the operation area is larger than Equal to the preset area size, the mask is closed, and a display frame equal in size to the operation area is popped up in the display screen, so that the user performs a touch operation in the display box, if If the area is smaller than the preset area size, the user is prompted to re-enter the touch track, and the technical means for determining whether the operation area corresponding to the touch track is greater than or equal to the size of the preset area is implemented, and multiple pairs of smart pens are used in the display screen. The display box performs the technical effect of the touch operation, which facilitates the user to delimit the display area of the display frame in the display screen according to his actual needs, and opens the required application in the display box without exiting the display interface of the currently executing application. At the same time, setting the operation area can make the user clear the size of the display frame generated according to the current touch trajectory, and can also make the final display frame more in line with the user's needs.

Embodiment 3

FIG. 3 is a schematic structural diagram of a control apparatus for a large-screen display device according to Embodiment 3 of the present invention. The control device for the large-screen display device provided in this embodiment includes: a request acquisition module 301, a mask pop-up module 302, a track acquisition module 303, a display frame pop-up module 304, and an operation acquisition module 305.

The request obtaining module 301 is configured to obtain a touch request of the smart pen on the display screen; the masking pop-up module 302 is configured to pop the mask layer on the display screen according to the touch request; and the track acquiring module 303 is configured to be in the mask layer The at least one touch track of the smart pen is obtained. The display box pop-up module 304 is configured to pop up a display frame corresponding to the touch track on the display screen. The operation obtaining module 305 is configured to obtain a corresponding touch operation in the display frame. .

The technical solution provided by the embodiment provides a touch panel on the display screen by acquiring a touch request of the smart pen, and pops a display frame corresponding to the touch track on the display screen according to at least one touch track of the smart pen, in the display box. The technical means for obtaining the corresponding touch operation realizes the technical effect of performing a touch operation on the plurality of display frames in the display device by using the smart pen, and is convenient for the user to delimit the display area of the display frame in the display screen according to the actual needs of the user. And open the desired app in the display box, and no need Exit the display interface of the currently executing application.

On the basis of the foregoing embodiment, the request obtaining module 301 includes: a first signal unit, configured to acquire a first button signal of the smart pen; and a request generating unit, configured to generate a touch of the smart pen on the display screen according to the first button signal request.

On the basis of the foregoing embodiment, the trajectory obtaining module 303 includes: a trajectory acquiring unit, configured to acquire at least one touch trajectory on the smear layer; and a second signal unit, configured to receive the smart The second button signal of the pen determines at least one touch track as at least one touch track of the smart pen.

On the basis of the foregoing embodiment, the display frame pop-up module 304 includes: an area determining unit, configured to determine a corresponding operation area according to each touch track; and a first pop-up unit for popping up the same size as the operation area on the display screen. Display box.

On the basis of the foregoing embodiment, the first pop-up unit is specifically configured to: if the operation area is greater than or equal to the preset area size, pop up a display frame of the same size as the operation area on the display screen.

On the basis of the foregoing embodiment, the first pop-up unit includes: a prompting sub-unit, configured to prompt to re-enter the touch track if the operation area is smaller than the preset area size; and return to the sub-unit for returning execution on the mask layer, Acquiring at least one touch track of the smart pen, and when the operation area is greater than or equal to the preset area size, a display frame equal in size to the operation area is popped up on the display screen.

On the basis of the above embodiments, the method further includes: a first signal module, configured to acquire a third button signal of the smart pen; and a mask closing module, configured to close the mask layer according to the third button signal.

Based on the above embodiment, the display frame is a surface view rectangular view frame.

The control device for the large-screen display device provided in this embodiment may be used to execute the control method for the large-screen display device provided by any of the foregoing embodiments, and has corresponding functions and beneficial effects.

Note that the above are only the preferred embodiments of the present invention and the technical principles applied thereto. Those skilled in the art will appreciate that the invention is not limited to the specific embodiments described herein, and that various modifications, changes and substitutions may be made without departing from the scope of the invention. Therefore, the present invention has been described in detail by the above embodiments, but the present invention is not limited to the above embodiments, and other equivalent embodiments may be included without departing from the inventive concept. The scope is determined by the scope of the appended claims.

Claims (10)

A control method for a large-screen display device, comprising: Obtaining a touch request of the smart pen on the display screen; Popping a layer on the display screen according to the touch request; Obtaining at least one touch track of the smart pen on the mask layer; Displaying a display frame corresponding to the touch track one by one on the display screen; A corresponding touch operation is obtained in the display frame. The control method according to claim 1, wherein the obtaining a touch request of the smart pen on the display screen comprises: Obtaining a first button signal of the smart pen; A touch request of the smart pen on the display screen is generated according to the first button signal. The control method according to claim 1, wherein the acquiring at least one touch track of the smart pen on the mask layer comprises: Obtaining at least one touch track on the mask layer; When acquiring the at least one touch track, if the second button signal of the smart pen is synchronously received, the at least one touch track is determined as at least one touch track of the smart pen. The control method according to claim 1, wherein the displaying a display frame corresponding to the touch track in the display screen comprises: Determining a corresponding operation area according to each of the touch trajectories; A display frame equal in size to the operation area is popped up on the display screen. The control method according to claim 4, wherein the displaying a display frame equal in size to the operation area on the display screen comprises: If the operation area is greater than or equal to the preset area size, a display frame equal in size to the operation area is popped up on the display screen. The control method according to claim 4, wherein the displaying a display frame equal in size to the operation area on the display screen comprises: If the operation area is smaller than a preset area size, prompting to re-enter the touch track; Returning to an operation of acquiring at least one touch track of the smart pen on the mask layer, and popping up the operation area on the display screen when the operation area is greater than or equal to a preset area size Equal display box. The control method according to claim 1, further comprising: Obtaining a third button signal of the smart pen; The mask layer is turned off according to the third button signal. The control method according to claim 1, wherein the display frame is a surface view rectangular view frame. A control device for a large-screen display device, comprising: Requesting an acquisition module for obtaining a touch request of the smart pen on the display screen; a masking module for popping a mask layer on the display screen according to the touch request; a trajectory acquiring module, configured to acquire at least one touch trajectory of the smart pen on the smear layer; a display box ejecting module, configured to pop up a display frame corresponding to the touch track on the display screen; An operation obtaining module is configured to obtain a corresponding touch operation in the display frame. The control device according to claim 9, wherein the request acquisition module comprises: a first signal unit, configured to acquire a first button signal of the smart pen; And a request generating unit, configured to generate a touch request of the smart pen on the display screen according to the first button signal.

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