JP2014174808A - Portable terminal and system for displaying video - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal that improves operability of an external display apparatus.SOLUTION: A portable terminal 100 capable of displaying video on an external display apparatus includes: an external output video management section 170 for transmitting a video signal to the external display apparatus 200; a display section 150 for displaying an image; a touch panel control section 130 for accepting a touch operation in an image display area of the display section 150; and an arithmetic section 110 for controlling the operation of the portable terminal 100. The arithmetic section 110 is configured to receive information representing the touch operation on a display section 250 from the external display apparatus 200 and then to make the display section 150 perform a screen operation corresponding to the touch operation specified with the received information on the basis of the size of a display screen of the display section 150 and the size of a display screen of the display section 250.

Description

  The present invention relates to video display, and more particularly to control in a mobile terminal capable of displaying video.

  Electronic devices having a touch panel as a user interface are increasing, and a technique for improving operability has also been proposed.

  For example, Japanese Patent Laying-Open No. 2012-164272 (Patent Document 1) discloses “an operation information acquisition device capable of improving the operability of a touch panel device”. The operation information acquisition device 100 is a device that acquires operation information based on an output signal of the touch panel display 200, and an operation type determination unit 120 that acquires an operation type based on the output signal, and a touch panel based on the output signal. A touch area calculation unit 130 that acquires a touch area, and an operation amount determination unit 140 that determines an amount corresponding to the acquired touch area as an operation amount of the acquired operation type ”(see [Summary]).

JP 2012-164272 A

  By the way, a portable terminal (for example, a smart phone, a tablet terminal or other portable information communication terminal) is connected to an external display device (for example, a television), and the video content of the portable terminal is displayed on the external display device. There is a demand for viewing the video content on a screen of an external display device having a screen that is usually larger than the screen. At that time, when the external display device has a touch panel, there is also an operation for switching the screen based on a touch operation on an image displayed on the external display device. When such an operation is performed, since the screen size of the mobile terminal and the screen size of the external display device are different, the screen movement amount by the operation on the touch panel of the external display device and the screen movement amount of the mobile terminal May be different. Therefore, the user of the external display device may feel uncomfortable about the operation. Therefore, a technique for improving the operability in the external display device is required.

  This disclosure has been made in order to solve the above-described problems, and an object in one aspect is to provide a portable device capable of transmitting video to an external display device so that operability of a screen in the external display device is improved. To provide a terminal. An object in another aspect is to provide a system that improves the operability of a screen in an external display device that can communicate with a mobile terminal.

  According to one embodiment, a mobile terminal capable of displaying video on a display device includes a transmission means for transmitting a video signal to the display device, a terminal display unit for displaying an image, and an image display area of the display unit A touch panel control unit for receiving a touch operation on the mobile phone and a terminal control unit for controlling the operation of the mobile terminal. The display device includes a receiving unit for receiving a signal transmitted from the mobile terminal, an external display unit for displaying an image, a touch panel control unit for receiving a touch operation on the image display area of the external display unit, A device control unit for controlling the operation of the display device. The terminal control unit receives information representing a touch operation on the external display unit from the display device, and based on the received information based on the size of the display screen of the terminal display unit and the size of the display screen of the external display unit. The terminal display unit is configured to execute a screen operation corresponding to the specified touch operation.

  Preferably, the touch operation on the external display unit includes a touch-down operation. The information representing the touchdown operation includes information representing the area of the region where the touchdown is detected.

  Preferably, the terminal control unit displays the terminal according to a ratio between the size of the display screen of the terminal display unit and the size of the display screen of the external display unit when the area of the region is equal to or larger than a preset threshold. The movement amount of the screen in the unit is calculated.

  Preferably, the terminal control unit is configured to calculate a movement amount in the external display unit by a move operation performed after the touchdown operation as a movement amount in the terminal display unit when the area of the region is equal to or less than a threshold value. Yes.

  According to another embodiment, a system for displaying video is provided. This system includes a mobile terminal and a display device capable of communicating with the mobile terminal. The portable terminal includes a transmission means for transmitting a video signal to a display device, a terminal display unit for displaying an image, a touch panel control unit for receiving a touch operation on an image display area of the display unit, and a portable terminal A terminal control unit for controlling the operation. The display device includes a receiving unit for receiving a signal transmitted from the mobile terminal, an external display unit for displaying an image, a touch panel control unit for receiving a touch operation on the image display area of the external display unit, A device control unit for controlling the operation of the display device. The terminal control unit receives information representing a touch operation on the external display unit from the display device, and based on the received information based on the size of the display screen of the terminal display unit and the size of the display screen of the external display unit. The terminal display unit is configured to execute a screen operation corresponding to the specified touch operation.

  In one aspect, the operability of a screen in an external display device including a touch panel can be improved.

  The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings.

It is a figure showing the outline of a structure of the system 1 which concerns on embodiment of this invention. It is a figure showing the transition of the screen in the display part 150 of the portable terminal 100, and the display part of the external display apparatus 200. FIG. It is a flowchart showing a part of process which the calculating part 110 performs. 5 is a flowchart showing a part of processing executed by external display device 200.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<Configuration of mobile terminal 100>
A system 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a diagram showing an outline of a configuration of a system 1 according to an embodiment of the present invention. The system 1 includes a mobile terminal 100 and an external display device 200. For example, the mobile terminal 100 is realized as a mobile communication terminal including a smartphone, a tablet terminal, and other communication functions and an image display function. The external display device 200 is a television, a monitor device, or other devices, and is realized as a video display device having a communication function with the communication terminal.

  The portable terminal 100 includes a calculation unit 110, a touch panel 120, a touch panel control unit 130, a display control unit 140, a display unit 150, a memory 160, an external output video management unit 170, and an external output control information communication unit 180. And an external touch event control unit 190.

  Arithmetic unit 110 executes a command for realizing predetermined processing for portable terminal 100.

The touch panel 120 detects an operation on the display unit 150.
The touch panel control unit 130 controls the operation of the touch panel 120 based on the command output from the calculation unit 110. The operation includes, for example, turning on / off a touch operation detection unit.

  The display control unit 140 controls screen display on the display unit 150 based on the command output from the calculation unit 110. For example, when communication between the mobile terminal 100 and the external display device 200 is established, when the mobile terminal 100 transmits a video signal to the external display device 200, the display control unit 140 displays the video on the display unit 150. Switches between displaying and hiding the image.

  The display unit 150 displays an image based on the signal output from the display control unit 140. The displayed image includes a moving image, a still image, a photograph, and other content stored in the memory 160, similar content provided from the outside of the mobile terminal 100, and the like. The display unit 150 is realized as a liquid crystal monitor, an organic EL (Electro Luminescence) monitor, or other display device.

  The memory 160 stores system information including data and a program for causing the mobile terminal 100 to execute a predetermined operation, and the above-described content and other user data. The memory 160 is realized as a flash memory, a hard disk, an SSD (Solid State Drive) or other nonvolatile storage device, or a RAM (Random Access Memory) or other volatile storage device. The memory 160 can also be realized by a removable memory card.

  The external output video management unit 170 controls the output (transmission) of the video signal to the outside of the mobile terminal 100 based on the control of the calculation unit 110. For example, the external output video management unit 170 wirelessly transmits video data stored in the memory 160 as a stream signal.

  The external output control information communication unit 180 receives an input of a signal transmitted by the external display device 200. The signal includes a type of touch operation (also referred to as a touch event) on the display unit 250 detected in the external display device 200, coordinate value information for specifying the touch operation, and the like. The touch operation is, for example, a touch-down operation, a move operation, or a touch-up operation on the display unit 250, but is not limited thereto. The coordinate value information includes, for example, a coordinate value that represents a point or a region where a touch-down operation or a touch-up operation is detected, or a coordinate value that represents a movement amount for which a move operation has been performed.

  The external touch event control unit 190 receives an output from the external output control information communication unit 180 and controls display of an image on the display unit 150 based on the touch event detected in the external display device 200. For example, when the mobile terminal 100 receives from the external display device 200 that the touch-down operation on the display unit 250 has been performed and information indicating the touch-down operation (the coordinate value of the touch-down point), the external touch event control is performed. Based on the information, unit 190 identifies the coordinate value of the point corresponding to the point where the touchdown operation has been performed, in the image displayed on display unit 150. In the subsequent processing, the coordinate value of this point is the starting point.

  In another aspect, when the mobile terminal 100 receives from the external display device 200 information indicating that a move operation has been performed on the display unit 250 and information indicating the move operation (for example, coordinate values representing a trajectory on the screen), Based on the information, touch event control unit 190 identifies the coordinate value of each point corresponding to the locus on which the move operation has been performed in the image displayed on display unit 150.

  In yet another aspect, when the mobile terminal 100 receives from the external display device 200 information indicating that a touch-up operation has been performed on the display unit 250 and information indicating the touch-up operation (coordinate values of a touch-up point), The external touch event control unit 190 specifies a coordinate value of a point corresponding to the point where the touch-up operation has been performed in the image displayed on the display unit 150 based on the information.

  The calculation unit 110, the touch panel control unit 130, the display control unit 140, and the external touch event control unit 190 are realized as, for example, a CPU (Central Processing Unit) or other processors.

<Configuration of External Display Device 200>
Referring to FIG. 1 again, the external display device 200 includes a calculation unit 210, a touch panel 220, a touch panel control unit 230, a display control unit 240, a display unit 250, a touch area calculation unit 260, and an external input video. A management unit 270 and an external input control information communication unit 280 are provided.

The calculation unit 210 controls the operation of the external display device 200.
The touch panel 220 receives a touch operation on the image display area of the display unit 250.

  The touch panel control unit 230 controls the operation of the touch panel 220 based on the command output from the calculation unit 210. The operation includes, for example, turning on / off a touch operation detection unit.

  The display control unit 240 controls the display of the screen on the display unit 250 based on the command output from the calculation unit 210. For example, when communication between the mobile terminal 100 and the external display device 200 is established, when the external display device 200 receives a video signal from the mobile terminal 100, the display control unit 240 displays a video based on the video signal. It is displayed on the display unit 250. When the external display device 200 is a television, the display control unit 240 displays a television broadcast program on the display unit 250 according to the channel selection result by the tuner.

  The display unit 250 displays an image based on the signal output from the display control unit 240. The displayed image is a moving image based on a video signal transmitted from the mobile terminal 100, a still image, a photograph or other content, a program based on a television broadcast signal, or the like. The display unit 250 is realized as a display device such as a liquid crystal monitor, an organic EL monitor, or the like.

  The touch area calculation unit 260 calculates the area of the area where the touch operation is detected based on the output from the touch panel control unit 230. The area is calculated as the number of pixels, for example.

  The external input video management unit 270 controls reception of video signals to the outside of the external display device 200 based on the control of the calculation unit 210. For example, the external input video management unit 270 establishes communication with the mobile terminal 100 and accepts reception of a video signal transmitted from the mobile terminal 100.

  The external input control information communication unit 280 transmits a signal corresponding to the touch operation detected in the external display device 200 to the mobile terminal 100. The signal includes the type of touch operation (also referred to as a touch event) to the detected display unit 250, coordinate value information specifying the touch operation, and the like. The touch operation is, for example, a touch-down operation, a move operation, or a touch-up operation on the display unit 250, but is not limited thereto. The coordinate value information includes, for example, a coordinate value that represents a point or a region where a touch-down operation or a touch-up operation is detected, or a coordinate value that represents a movement amount for which a move operation has been performed.

  In addition, the calculating part 210, the touch panel control part 230, the display control part 240, and the touch area calculation part 260 are implement | achieved as CPU or other processors, for example.

<Technology>
Here, the technical concept according to the present embodiment will be described with reference to FIG.

  For example, when a video is output from the mobile terminal 100 to the external display device 200, the screen size of the external display device 200 (for example, a liquid crystal television) is often set to the mobile terminal 100 (for example, a smartphone, a tablet terminal, or other mobile information). Larger than the screen size of the communication terminal).

When the user performs a touch operation on the external display device 200, there are the following two cases.
Case (1) When a position on the screen of the display unit 250 of the external display device 200 is indicated by a touch operation (for example, a click operation on a browser screen displayed on the display unit 250)
Case (2) When the display content is moved largely on the screen of the display unit 250 (for example, an operation of scrolling the screen greatly)
Regarding the case (1), there is no particular concern about the operability due to the size of the screen. However, regarding the case (2), as the screen size increases, it may become difficult to operate if the screen is greatly scrolled. .

  Therefore, in the present embodiment, a method is disclosed in which the operability related to the case (2) is improved and the operability of the case (1) is not impaired.

  For example, let us consider a case where touch operation information from the external display device 200 is processed by the mobile terminal 100 during video output from the mobile terminal 100 to the external display device 200. In this case, since the screen size (actual size) of the external display device 200 with respect to the resolution of the video transmitted from the mobile terminal 100 cannot be grasped by the mobile terminal 100, in the situation such as the case (2), the user is Intuitive touch operation cannot be provided.

Therefore, the following method can be considered.
[Step 1]
The mobile terminal 100 starts outputting video signals to the external display device 200.

  For example, in the negotiation between the mobile terminal 100 and the external display device 200 when starting the output of the video signal, the mobile terminal 100 determines the resolution of the video signal transmitted from the mobile terminal 100 to the external display device 200. To do. The mobile terminal 100 acquires the screen size (SA) of the display unit 250 of the external display device 200 from the external display device 200, and the ratio between the screen size and the screen size (SB) of the display unit 150 (X = SA / SB) is calculated.

[Step 2]
While the mobile terminal 100 outputs a video signal, the external display device 200 accepts an operation on the touch panel 220 by the user.

  In response to an operation on the touch panel 220, the external display device 200 transmits information (hereinafter also referred to as “touch operation information”) to the mobile terminal 100 via the external input control information communication unit 280. The touch operation information includes, for example, the coordinate value information of the point where the touchdown is detected, the coordinate value information of the point where the move operation is detected (for example, the start point or the end point), and the area where the touchdown operation is detected Information on the touch area (for example, the number of pixels).

  On the other hand, the mobile terminal 100 executes the following process. First, when the mobile terminal 100 receives touchdown information from the external display device 200, the mobile terminal 100 acquires touch area information. When the touch area is greater than or equal to a preset threshold, the calculation unit 110 multiplies the movement amount information calculated from the move coordinate value information after the touchdown by the screen size ratio (X) calculated in step 1. To determine the amount of movement. If the display unit 250 of the external display device 200 is larger than the display unit 150 of the mobile terminal 100, the amount of movement is large. On the other hand, when the touch area is equal to or smaller than a preset threshold value, the calculation unit 110 uses the coordinate information of the move operation after the touchdown as it is and sets it as the movement amount. If the calculation unit 110 uses a movement amount obtained by uniformly multiplying the screen ratio, it may be a factor that hinders a fine operation. Therefore, the user who performed the touchdown operation by using the touch area at the time of the touchdown. Consider the intention of.

  In the above example, the calculation unit 110 determines the user's intention based on the area of the area where the touchdown is performed on the display unit 250 of the external display device 200. However, the external display device 200 is It may be possible to acquire the locus of the touch operation, the shape of the region, and the like using the output. The external display device 200 may determine the information as the user intention by sending information indicating the shape to the mobile terminal 100.

<Display mode>
With reference to FIG. 2, the display mode of the screen in portable terminal 100 and external display device 200 according to the present embodiment will be described. FIG. 2 is a diagram illustrating screen transitions in the display unit 150 of the mobile terminal 100 and the display unit of the external display device 200.

  As shown in the state A, the mobile terminal 100 and the external display device 200 are in a communication state. The portable terminal 100 displays images 11 and 12 on the display unit 150. At this time, the external display device 200 displays the images 21 and 22 based on the video signal transmitted from the mobile terminal 100. Image 21 corresponds to image 11. Image 22 corresponds to image 12. In one aspect, the user (viewer) of the external display device 200 touches down the finger 20 on the display area of the display unit 250 and performs a move operation.

  As shown in state B, when the product of the movement amount 24 of the move operation performed on the external display device 200 and the screen size ratio (X) exceeds a predetermined threshold value, the mobile terminal 100 The amount of movement of the screen at is also increased according to the product. More specifically, the image 21 displayed on the external display device 200 is not displayed, and the image 21 is displayed at a new location as the image 25. At this time, the image 11 displayed on the mobile terminal 100 is also not displayed, and the image 12 is displayed as the image 15.

  On the other hand, as shown in the state C, when the product of the movement amount of the move operation performed on the external display device 200 and the ratio (X) of the screen size is smaller than a predetermined threshold value, The moving amount of the screen in the portable terminal 100 is also reduced according to the product. More specifically, the image 21 displayed on the external display device 200 is displayed as an image 28. The image 22 is displayed as an image 29. The image 11 displayed on the mobile terminal 100 is displayed as an image 18. Image 12 is displayed as image 19.

<Control structure>
With reference to FIG. 3, the control structure of portable terminal 100 according to the present embodiment will be described. FIG. 3 is a flowchart showing a part of processing executed by the arithmetic unit 110. This process is realized by executing a program stored in the mobile terminal 100 by the processor.

  In step S <b> 310, calculation unit 110 prepares to output video to external display device 200.

  More specifically, in step S312, calculation unit 110 determines the resolution of the video output to external display device 200 based on information set in portable terminal 100. The calculation unit 110 establishes communication between the mobile terminal 100 and the external display device 200. The computing unit 110 transmits a video output request to the external display device 200.

  In step S314, operation unit 110 acquires the size of the display area of display unit 250 from the signal transmitted by external display device 200. In another aspect, the mobile terminal 100 acquires the resolution in the display unit 250 sent from the external display device 200.

  In step S316, calculation unit 110 calculates a ratio (X) between the size of display unit 150 of portable terminal 100 and the size of display unit 250 of external display device 200.

  In step S320, calculation unit 110 starts outputting video to external display device 200 via external output video management unit 170.

  In step S330, calculation unit 110 starts an external touch event acquisition process via external touch event control unit 190. Specifically, the external touch event control unit 190 receives a signal from the external display device 200 via the external output control information communication unit 180. This signal includes touch operation information on the display unit 250. The external touch event control unit 190 acquires information indicating what touch operation is performed and how much (movement amount, coordinate value, etc.) is performed on the display unit 250 of the external display device 200 from the touch operation information.

  In step S340, calculation unit 110 determines an event (type of touch operation) performed on display unit 250 based on the touch operation information. When the event is a touch-up operation, the arithmetic unit 110 switches the control to step S350. When the event is a touchdown operation, the calculation unit 110 switches the control to step S360. If the event is a move operation, operation unit 110 switches control to step S370.

  In step S350, operation unit 110 clears memory 160. More specifically, the calculation unit 110 releases a memory area allocated for realizing a drawing process corresponding to the touch operation.

  In step S <b> 360, calculation unit 110 acquires information indicating the area (touch area) of the area touched on display unit 250 from the signal transmitted from external display device 200, and stores the information in memory 160.

In step S370, operation unit 110 reads the touch area from memory 160.
In step S380, operation unit 110 determines the magnitude relationship between the touch area and the threshold value. When the touch area is larger than a preset threshold, the calculation unit 110 switches the control to step S382. When that is not right, the calculating part 110 switches control to step S386.

  In step S382, the calculation unit 110 weights the movement amount by calculating the product of the screen ratio (X) calculated in step S316 and the movement amount. Thereby, the movement amount in the portable terminal 100 is derived.

  In step S384, calculation unit 110 executes a move process in display unit 150 using the calculated movement amount.

  In step S386, calculation unit 110 detects that the external touch event acquisition process has ended based on a signal from external touch event control unit 190. More specifically, the calculation unit 110 detects that the touch operation on the display unit 250 has ended based on a signal from the external display device 200. This signal is transmitted from the external input control information communication unit 280 to the external output control information communication unit 180 when the touch operation on the display unit 250 is completed.

  In step S <b> 390, calculation unit 110 stops outputting video to external display device 200.

  A control structure of the external display device 200 will be described with reference to FIG. FIG. 4 is a flowchart showing a part of processing executed by the external display device 200.

  In step S410, calculation unit 210 makes preparations for accepting an input of a video signal transmitted from portable terminal 100. More specifically, in step S412, the calculation unit 210 determines the resolution of an image input from the mobile terminal 100 to the external display device 200. In step S414, the arithmetic unit 210 notifies the mobile terminal 100 of the screen size of the display unit 250 by communicating with the external output control information communication unit 180 of the mobile terminal 100 via the external input control information communication unit 280. To do. In another aspect, the arithmetic unit 210 transmits a signal including the resolution to the mobile terminal 100.

  In step S420, operation unit 210 starts receiving an input of a video signal transmitted from portable terminal 100 via external input video management unit 270.

  In step S430, operation unit 210 starts touch event external transmission processing based on an output signal from touch panel 220.

  In step S440, operation unit 210 determines the event type based on information representing the content of the touch operation sent from touch panel 220. The information includes, for example, a coordinate value representing a point where a touchdown operation has been performed, a coordinate value representing a region where a touchdown operation has been detected, a coordinate value representing a locus where a move operation has been performed, and a touchup operation being detected. Contains the coordinate value that represents the point. If computing unit 210 determines that the event type is a touch-up operation or a move operation, control unit 210 switches control to step S450. If computing unit 210 determines that the event type is a touch-down operation, control unit 210 switches control to step S460.

  In step S450, calculation unit 210 notifies portable terminal 100 of the event type (touch-up operation or move operation) detected by external display device 200 via external input control information communication unit 280. In addition, the calculation unit 210 notifies the mobile terminal 100 of the movement amount of the move operation specified by the event type or the coordinate value in the touch-up operation via the external input control information communication unit 280.

  In step S <b> 460, touch area calculation unit 260 calculates the area touched by the touch operation performed on display unit 250 based on the output from touch panel control unit 230. The area is expressed as, for example, the number of pixels.

  In step S470, calculation unit 210 notifies portable terminal 100 of the event type (= touchdown operation) detected by external display device 200 via external input control information communication unit 280. The calculation unit 210 also notifies the portable terminal 100 of the coordinate value representing the point or area where the touchdown operation specified by the event type is detected via the external input control information communication unit 280.

In step S480, operation unit 210 ends the touch event external transmission process.
In step S490, operation unit 210 ends accepting input of the video signal transmitted from portable terminal 100.

  As described above, according to the present embodiment, a touch operation in consideration of the size of the screen size of the external display device 200 can be performed. The screen can be operated.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 system 11, 12, 15, 18, 19, 19, 22, 25, 28, 29 images, 20 fingers, 24 travel, 100 mobile terminals, 110, 210 computing units, 120, 220, 130, 230 touch panel control , 140, 240 Display control unit, 150, 250 Display unit, 160 Memory, 170 External output video management unit, 180, 280 External output control information communication unit, 190 External touch event control unit, 200 External output device, 260 Touch area Calculation unit, 270 external input video management unit, 280 external input control information communication unit.

Claims (5)

A portable terminal capable of displaying video on a display device,
Transmitting means for transmitting a video signal to the display device;
A terminal display for displaying images;
A touch panel control unit for receiving a touch operation on the image display area of the display unit;
A terminal control unit for controlling the operation of the mobile terminal,
The display device
Receiving means for receiving a signal transmitted from the portable terminal;
An external display for displaying images;
A touch panel control unit for accepting a touch operation on the image display area of the external display unit;
A device control unit for controlling the operation of the display device,
The terminal control unit
Receiving information representing a touch operation on the external display unit from the display device;
Based on the size of the display screen of the terminal display unit and the size of the display screen of the external display unit, the terminal display unit is caused to execute a screen operation corresponding to the touch operation specified by the received information. A mobile terminal configured in The touch operation on the external display unit includes a touch-down operation,
The mobile terminal according to claim 1, wherein the information representing the touchdown operation includes information representing an area of a region where the touchdown is detected.   When the area of the region is equal to or larger than a preset threshold, the terminal control unit, according to the ratio between the size of the display screen of the terminal display unit and the size of the display screen of the external display unit, The mobile terminal according to claim 2, wherein the mobile terminal is configured to calculate a moving amount of the screen in the terminal display unit.   When the area of the region is equal to or less than the threshold, the terminal control unit calculates a movement amount in the external display unit due to a move operation performed after the touchdown operation as a movement amount in the terminal display unit. The mobile terminal according to claim 3, which is configured. A system for displaying video,
A mobile device,
A display device capable of communicating with the portable terminal,
The portable terminal is
Transmitting means for transmitting a video signal to the display device;
A terminal display for displaying images;
A touch panel control unit for receiving a touch operation on the image display area of the display unit;
A terminal control unit for controlling the operation of the mobile terminal,
The display device
Receiving means for receiving a signal transmitted from the portable terminal;
An external display for displaying images;
A touch panel control unit for accepting a touch operation on the image display area of the external display unit;
A device control unit for controlling the operation of the display device,
The terminal control unit
Receiving information representing a touch operation on the external display unit from the display device;
Based on the size of the display screen of the terminal display unit and the size of the display screen of the external display unit, the terminal display unit is caused to execute a screen operation corresponding to the touch operation specified by the received information. Configured in the system.

Images