KR102190888B1 - Display apparatus and control method of the same - Google Patents

Abstract

In the control method of a display device capable of receiving and displaying a source image reproduced by a source device according to the present invention by a wireless communication means, the step of monitoring whether a wireless connection request signal transmitted from the source device is received, and Proceeding setting for connection with the source device in response to a connection request signal, automatically switching an image input source to the wireless communication means to display a source image reproduced by the source device, and the source It characterized in that it comprises the step of receiving and displaying the source image played in the device.
Accordingly, it is possible to provide a control method of a display device provided to automatically execute an operation for connection configuration and automatically switch an image input source without a user's input.

Description

Display device and its control method {DISPLAY APPARATUS AND CONTROL METHOD OF THE SAME}

The present invention relates to a display device and a control method thereof, and more particularly, to a display device for wirelessly receiving and displaying a source image displayed on a source device, and a control method thereof.

With the development of wireless display technology, images displayed on the display unit of PCs, smart devices, and other video source devices can be wirelessly transmitted to the display device in real time and displayed on the display device.

In this way, in order to share video content between devices, both devices recognize each other and establish a connection, and then the display device receives and displays the video content from the source device.

The source device and the display device must enter a discovery mode for mutual device discovery prior to connection configuration. Conventionally, in order for both devices to enter the discovery mode, a user must execute a specific application for each of the source device and the display device or input a specific key to generate a trigger. That is, there is an inconvenience in that the user must input a command to enter the search mode for connection to each of the source device and the display device.

Thereafter, when both devices establish a connection for wireless display through device discovery and/or service discovery, the source device transmits the source image to the display device, and the display device renders the received source image and displays it on the display unit. .

Here, in order for the received source image to be processed and displayed on the display unit, the input source of the display device must be switched to an input source for wireless display.

For example, if the current input source of the display device is a TV broadcast channel, even if a source image is received from the source device, it cannot be processed and displayed on the display unit. Therefore, the user may use the input source as an input source for processing and displaying the wireless display. There is a discomfort to switch.

In another prior art, when a user executes a specific application such as activation of a wireless display mode through an input of a display device, a device search for a connection configuration with a source device and an input source switch for a wireless display are simultaneously performed. In some cases, it is prepared to lose.

However, even in this case, for the connection configuration between the source device and the display device and wireless display of the source image, the user must input a command for connection configuration through the input unit of the source device, and also connect through the input unit of the display device. It is inconvenient to input a command for configuration and/or input source switching.

Accordingly, it is an object of the present invention to configure a wireless connection between devices for wirelessly receiving a source image of a source device and display it on a display device and to switch the input source of the display device. A display device provided to automatically execute an operation for connection configuration and switch the input source in response to the user inputting a command through the input unit of the source device by improving the inconvenience of inputting a command, and a control method thereof Is to provide.

The above object is, according to the present invention, a method for controlling a display device capable of receiving and displaying a source image reproduced by a source device through a wireless communication means, the step of monitoring whether or not a wireless connection request signal transmitted from the source device is received. Wow; Performing setup for connection with the source device in response to the received wireless connection request signal; Automatically switching an image input source to the wireless communication means to display a source image reproduced by the source device; It can be achieved by a method of controlling a display device comprising the step of receiving and displaying a source image reproduced by the source device.

In addition, in response to the received wireless connection request signal, the image input source of the display device may be automatically switched to the wireless communication means.

In addition, the step of setting for connection with the source device in response to the received wireless connection request signal may be performed automatically without a user's input.

In addition, it may be provided to communicate with the source device in a Wi-Fi Peer to Peer (P2P) standard.

In addition, the step of monitoring whether the wireless connection request signal transmitted by the source device is received may include a state in which the wireless communication means periodically enters the discovery step.

In addition, the received wireless connection request signal may further include determining information indicating the automatic switching of the image input source.

Here, the information may be provided to be included in the service search request frame.

The object of the present invention is to provide a display device capable of receiving and displaying a source image reproduced by a source device wirelessly, comprising: a communication unit performing wireless communication with the source device; A display unit that displays a source image received from the source device; It monitors whether the wireless connection request signal transmitted from the source device is received through the communication unit, and controls to proceed with setting for connection with the source device in response to the received wireless connection request signal, and in the source device And a control unit for controlling an image input source to be automatically switched to the communication unit to display a reproduced source image, and for controlling to receive a source image played in the source device through the communication unit and display it on the display unit. It can also be achieved by a display device characterized.

Here, the controller may control the image input source to be automatically switched to the communication unit in response to the received wireless connection request signal.

In addition, the controller may control to automatically proceed with setting for connection with the source device in response to the received wireless connection request signal without a user's input.

In addition, the communication unit may be provided to communicate with the source device in a Wi-Fi Peer to Peer (P2P) standard.

In addition, the control unit may monitor whether or not a wireless connection request signal transmitted from the source device is received, and control the communication unit to periodically enter the discovery phase.

In addition, the control unit may determine information indicating the automatic switching of an image input source included in the received wireless connection request signal.

Here, the information may be provided to be included in the service search request frame.

According to the present invention, in a display system, a user input unit, a communication unit performing wireless communication with the display device, a display unit displaying a source image, and a user command input through the user input unit A source comprising a control unit that controls to transmit a wireless connection request signal, controls to establish a connection setting with a display device that has received the wireless connection request signal, and controls to transmit the source image to the display device through the communication unit Device;

A communication unit that performs wireless communication with the source device, a display unit that displays a source image received from the source device, and monitors whether a wireless connection request signal transmitted from the source device is received through the communication unit, and receives Controls to proceed with setting for connection with the source device in response to the wireless connection request signal, and controls to automatically switch an image input source to the communication unit to display the source image played in the source device, and the source It can also be achieved by a display system including a display device including a control unit that controls to receive a source image reproduced by the device through the communication unit and display it on the display unit.

As described above, according to the present invention, in the wireless connection configuration between devices for wirelessly receiving a source image of a source device and displaying it on a display device, and switching an input source of the display device, each of the source device and the display device On the other hand, in order to improve the inconvenience that the user has to input a command, when the user inputs a command through the input unit of the source device, a display device provided to automatically execute an operation for connection configuration and switch the input source in response thereto. The control method can be provided.

1 is a block diagram showing the configuration of a wireless display system;
2 is a block diagram showing the configuration of a display device;
3 is a flowchart showing a method of controlling the display device.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. In order to clearly describe the present invention, parts irrelevant to the description have been omitted, and the same reference numerals are attached to the same or similar components throughout the specification.

1 is a block diagram of a wireless display system 1 according to an embodiment of the present invention.

As shown in Fig. 1, the display system 1 according to the present embodiment includes a source device 100 and a display device 200 provided to form a mutual wireless network.

The source device 100 and the display device 200 configure a wireless network by establishing a peer-to-peer connection directly to each other without using a wireless local area network (WLAN) access point (AP). can do.

Alternatively, when the source device 100 and the display device 200 are connected to the same Wi-Fi network, a direct link may be configured with each other through TDLS (Tunneled Direct Link Setup).

The source device 100 may be implemented as a device capable of generating, transcoding, or storing video content such as, for example, a PC, a laptop computer, a smart phone, a camera, a tablet, etc., and the display device 200 is, for example, a TV, a projector, etc. It can be implemented with the same device.

The source device 100 includes a communication unit (not shown) that performs wireless communication with the display device 100, a display unit (not shown) that displays a source image, and a user input unit (not shown) that receives a user's command. , And a control unit (not shown) for controlling the operation of all components of the source device 100.

The communication unit (not shown) is a wireless Internet module, including a Wi-Fi module (not shown), and can communicate with the display device 200 in a Wi-Fi Direct, that is, a Wi-Fi Peer-to-Peer (P2P) standard. .

The display unit (not shown) displays information and/or images processed by the source device 100, and is a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD). , It may include at least one of an organic light-emitting diode (OLED), a flexible display, and a 3D display.

The user input unit (not shown) generates input data for the user to control the operation of the source device 100, and includes a key pad, a dome switch, a touch pad (positive pressure/power failure), a jog wheel, and a jog. It can be configured with a switch or the like.

The control unit (not shown) controls a wireless connection request signal to be transmitted through a communication unit (not shown) in response to a user command input through a user input unit (not shown). Here, the user command is input to search for a display device supporting a wireless display mode capable of receiving a source image wirelessly from the source device 100 and displaying it in real time.

The control unit (not shown) performs active search using a probe request frame in response to the user command. Here, for quick search, a search range may be limited and search may be performed using social channels of channels 1, 6, and 11.

In the search process, as a probe request frame, a service search request frame for service search may be transmitted to the display apparatus 200. Here, the service search includes a service search for support of a function of wirelessly receiving and displaying a source image from the source device 100 in real time.

When a service search response frame is received as a probe response frame from the display apparatus 200 through a communication unit (not shown), the controller (not shown) controls to establish a connection setting with the display apparatus 200.

Alternatively, when there are a plurality of display devices that have responded, the controller (not shown) controls to generate and display a UI so that a list of the plurality of responding display devices is displayed on the display unit (not shown). It can be controlled to establish connection settings with the selected display device.

When a connection with the display device 200 is established, the control unit (not shown) transmits a source image played back to be displayed on a display unit (not shown) of the source device using Real-Time Streaming Protocol (RTSP), 200).

2 is a block diagram showing a configuration of a display apparatus 200 according to an embodiment of the present invention.

2, the display apparatus 200 includes an external device interface unit (not shown), a storage unit (not shown), an image processing unit (not shown), a user input interface unit (not shown), a display unit 210, It includes a communication unit 220 and a control unit 230.

The external device interface unit (not shown) may connect the external device and the display device 200, and for this, may include an A/V input/output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit (not shown) may be connected to an external device such as a digital versatile disk (DVD), a Blu ray, a game device, a camera, a camcorder, a computer (laptop), etc. by wire or wirelessly.

In addition, the external device interface unit (not shown) transmits an image, audio or data signal input from the outside through the connected external device to the control unit 230 of the display device 200, and the image processed by the control unit 230, Voice or data signals can be output to a connected external device.

The A/V input/output unit (not shown) includes a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, and an S-video terminal so as to input video and audio signals from an external device to the display device 200. Analog), a Digital Visual Interface (DVI) terminal, a High Definition Multimedia Interface (HDMI) terminal, an RGB terminal, a D-SUB terminal, and the like.

The storage unit (not shown) stores a program for processing and controlling each signal in the control unit 230, and may store signal-processed video, audio, or data signals.

In addition, the storage unit (not shown) may perform a function for temporary storage of a video, audio, or data signal input from an external device interface unit (not shown) or the communication unit 220, and a predetermined channel memory function It is also possible to store information on a broadcast channel.

In addition, the storage unit (not shown) may store an application or an application list input from the external device interface unit (not shown) or the communication unit 220.

The storage unit (not shown) is, for example, a flash memory type, a hard disk type, a multimedia card micro type, and a card type memory (eg, SD or XD memory). Etc.), RAM, and ROM (EEPROM, etc.) of at least one type of storage medium.

The display apparatus 200 may reproduce and provide a content file (movie file, still image file, music file, document file, application file, etc.) stored in a storage unit (not shown) to a user.

The image processing unit (not shown) performs various preset image processing processes on the received image signal. An image processing unit (not shown) outputs an image signal on which such a process has been performed to the display unit 210, so that an image based on the corresponding image signal may be displayed on the display unit 210.

In addition, the type of the image processing process performed by the image processing unit (not shown) is not limited, for example, de-multiplexing in which a predetermined signal is distributed to signals for each characteristic, corresponding to the image format of the image signal. De-interlacing (decoding) that converts an interlaced video signal to a progressive method, scaling (scaling) that adjusts the video signal to a preset resolution, and noise to improve image quality It may include noise reduction, detail enhancement, and frame refresh rate conversion.

In addition, the image processing unit (not shown) has a circuit configuration such as various chipsets (not shown), memory (not shown), electronic components (not shown), and wiring (not shown) for performing these processes. City) is implemented as an image processing board (not shown) mounted on it.

The user input interface unit (not shown) may transmit a signal input by the user to the controller 230 or may transmit a signal from the controller 230 to the user. For example, the user input interface unit (not shown) may power on/off from a remote control device (not shown), select a channel, and perform various communication methods such as a radio frequency (RF) communication method or an infrared (IR) communication method. A control signal such as a screen setting may be received and processed, or a control signal from the controller 230 may be transmitted to a remote control device (not shown).

In addition, the user input interface unit may transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 230.

For example, the user input interface unit transmits a control signal input from a sensing unit (not shown) that senses a user's gesture to the control unit 230 or transmits a signal from the control unit 230 to a sensing unit (not shown). can do. Meanwhile, the sensing unit (not shown) may include a touch sensor, a voice sensor, a position sensor, and a motion sensor.

The display unit 210 displays an image based on an image signal output from an image processing unit (not shown). The implementation method of the display unit 210 is not limited, and includes a liquid crystal, a plasma, a light-emitting diode, an organic light-emitting diode, and a surface conduction electron gun. -conduction electron-emitter), carbon nano-tubes, nano-crystals, and the like.

The communication unit 220 is a wireless Internet module, including a Wi-Fi module (not shown), and is based on the source device 100 and Wi-Fi Direct, that is, Wi-Fi Peer-to-Peer (P2P) standards shown in FIG. Communicate.

Further, the communication unit 220 preferably supports Wi-Fi CERTIFIED n, Wi-Fi Direct, Wi-Fi Protected Access 2 (WPA2), Wi-Fi Multimedia (WMM), and Wi-Fi Protected Setup.

The controller 230 monitors whether or not a wireless connection request signal transmitted from the source device is received through the communication unit 220 in order to establish a Wi-Fi P2P connection with the source device 100 shown in FIG. 1.

Here, the wireless connection request signal transmitted from the source device is a probe request frame for device and/or service discovery, and may include a service discovery request frame for service discovery.

When the source device performs an active search using a probe request frame, the controller 230 periodically enters a discovery phase for device and/or service discovery, so that the communication unit 220 ) To control.

The controller 230 may control the communication unit 220 to be in a listen state periodically in order to be in a state capable of responding to the active search of the source device.

In the receiving state, the controller 230 monitors whether or not a wireless connection request signal such as a probe request frame is received from the source device, and if it is determined that it has not been received, the communication unit 220 until receiving the wireless connection request signal. The control unit 230 monitors whether or not a wireless connection request signal has been received from the source device 100 through the communication unit 220, and, if received, the received wireless connection request signal. Correspondingly, it is possible to control to proceed with setting for connection with the source device 100.

Here, the controller 230 may control the communication unit 200 to automatically set up for connection with the source device 100 without a user's input in response to the received wireless connection request signal. The process of setting up the connection includes an automatic authentication process with the source device 100 using a Wi-Fi Protected Setup (WPS) function.

In addition, the controller 230 may control to automatically switch the image input source to the communication unit 220 in order to display the source image reproduced by the source device 100.

For example, when the current image input source of the display device 200 is set to DVD, the source image can be displayed on the display unit 210 even if the source image is received from the source device 100 through the communication unit 220. Therefore, the controller 230 controls the image input source of the display apparatus 200 to be switched to the communication unit 220.

The controller 230 may control the image input source of the display device to be automatically switched to the communication unit 220 in response to the received wireless connection request signal.

Here, the control unit 230 may determine information indicating the automatic switching of the image input source included in the received wireless connection request signal. For example, the information included in the wireless connection request signal may be included in a service discovery request frame generated using a Wi-Fi Protected Setup (WPS) Information Element (IE).

The WPS IE may be used to packetize each transmitted/received service discovery request frame for service discovery of the WFD device, and the service discovery request frame is a probe request frame including a WPS IE including a data field for a service discovery request. Means.

Here, the control unit 230, as a specific service, in the service search request frame included in the received wireless connection request signal, a wireless display function, that is, a function of wirelessly receiving and displaying a source image reproduced in the source device. When a field for requesting a service search is included, it may be determined as information indicating the automatic switching of the image input source.

Alternatively, the information may be included in a service discovery request frame generated using, for example, a vendor extension field of an 802.11u Generic Advertising Service (GAS) Initial Request Frame.

That is, when the vendor extension field includes a field for requesting a service search for a wireless display function as a specific service, the controller 230 may determine it as information indicating the automatic switching of the image input source.

After the connection with the source device 100 is established, the control unit 230 processes the received source image and displays it on the display unit 210 when receiving the source image played by the source device 100 through the communication unit 220 Control to be possible.

The control unit 230 according to the present invention may be provided to be included in a control unit that controls the overall configuration of the display apparatus 200, or may be separately provided in the form of a microcomputer to separately control the communication unit 220.

A wireless reception and connection device (not shown) according to another embodiment of the present invention includes a communication unit (not shown), a connection unit (not shown), and a control unit (not shown).

The communication unit (not shown) communicates with the source device 100 in accordance with a Wi-Fi Peer to Peer (P2P) standard. The connection unit (not shown) outputs a control command and a source image received from the source device 100 through the communication unit to a display device (not shown). When the control unit (not shown) receives the wireless signal transmitted from the source device 100, the display device (not shown) inputs the source image transmitted by the source device to display the source image on the display device (not shown). A control command for converting the source to a connection unit (not shown) is controlled to be output through the connection unit (not shown).

The connector (not shown) includes an interface of HDMI (High Definition Multimedia Interface) standard, and the control command may be output to the display device (not shown) through a CEC (Consumer Electronics Control) function.

Accordingly, in the case of a legacy display device not equipped with a wireless display function, when a wireless reception connection device (not shown) is connected, the wireless reception connection device performs wireless communication with the source device 100 and receives the source image. , It may be provided to output a source image to a legacy display device in which the input source is switched.

Hereinafter, a control method of the display apparatus 200 capable of receiving and displaying a source image reproduced by a source apparatus according to an embodiment of the present invention through a wireless communication means will be described with reference to FIGS. 2 and 3. As an example, the wireless communication means may be implemented by the communication unit 220 of FIG. 2.

2 and 3, in step S100, whether a wireless connection request signal transmitted from the source device is received is monitored. Here, the wireless connection request signal transmitted from the source device is a probe request frame for device and/or service discovery, and may include a service discovery request frame for service discovery.

The controller 230 monitors whether or not a wireless connection request signal such as a probe request frame has been received from the source device, and if it is determined that it has not been received, the wireless communication means periodically discovers until a wireless connection request signal is received. Control to enter the stage.

Next, in step S110, upon receiving the wireless connection request signal, the control unit 230 controls to proceed with the setting for connection with the source device in response to the received wireless connection request signal, and is reproduced in the source device. In order to display the source image, the image input source of the display apparatus 200 is controlled to be automatically switched to the wireless communication means.

Here, the control unit 230 controls the communication unit 200 to automatically set up for connection with the source device without a user input in response to the received wireless connection request signal, and performs the connection setting. The process includes an automatic authentication process with the source device using a Wi-Fi Protected Setup (WPS) function.

In addition, the controller 230 may control the image input source of the display apparatus 200 to be automatically switched to the wireless communication means in response to the received wireless connection request signal.

Here, the control unit 230 may determine information indicating the automatic switching of the image input source included in the received wireless connection request signal.

For example, the information included in the wireless connection request signal may be included in a service discovery request frame generated using a Wi-Fi Protected Setup (WPS) Information Element (IE).

The WPS IE may be used to packetize each transmitted/received service discovery request frame for service discovery of the WFD device, and the service discovery request frame is a probe request frame including a WPS IE including a data field for a service discovery request. Means.

Here, the control unit 230, as a specific service, in the service search request frame included in the received wireless connection request signal, a wireless display function, that is, a function of wirelessly receiving and displaying a source image reproduced in the source device. When a field for requesting a service search is included, it may be determined as information indicating the automatic switching of the image input source.

Alternatively, the information may be included in a service discovery request frame generated using, for example, a vendor extension field of an 802.11u Generic Advertising Service (GAS) Initial Request Frame.

That is, when the vendor extension field includes a field for requesting a service search for a wireless display function as a specific service, the controller 230 may determine it as information indicating the automatic switching of the image input source.

After the connection with the source device is established through the step of setting for connection with the source device, in step S120, the control unit 230 receives and renders the source image played by the source device, and the display unit 210 Control to display on.

The method for controlling a display device according to the present invention described above may be produced as a program to be executed on a computer and stored in a computer-readable recording medium. Examples of computer-readable recording media include ROM, RAM, and CD- ROM, magnetic tape, floppy disk, optical data storage device, and the like. The computer-readable recording medium is distributed over a computer system connected by a network, and computer-readable codes can be stored and executed in a distributed manner.

As described above, the present invention has been described in detail through preferred embodiments, but the present invention is not limited thereto and may be variously implemented within the scope of the claims.

1: wireless display system
100: source device
200: display device
210: display unit
220: communication department
230: control unit

Claims (22)

In the control method of a display apparatus comprising an external device interface provided to be connected to a first external device by wire, and a communication unit provided to enable wireless communication with a second external device,
Setting a current image input source of the display device to the external device interface;
Displaying a first image received from the first external device through the external device interface,
In response to a connection request signal received from the second external device through the communication unit while the first image is displayed, the connection request signal changes the image input source of the display device to the second external device. Identifying whether it contains predefined information, and
In response to being identified that the connection request signal does not include the information, performing a connection to the second external device while the first image received through the external device interface is displayed;
In response to being identified that the connection request signal includes the information, a connection to the second external device is performed, and the image input source of the display apparatus is selected based on the information included in the connection request signal. By changing from the external device interface to the communication unit, the display device including the step of displaying a second image received from the second external device through the communication unit set as the image input source,
The external device interface is a control method of a display device different from that of the communication unit. The method of claim 1,
The step of changing the image input source of the display device includes changing to the communication unit according to the received connection request signal. The method of claim 1,
The step of changing the image input source of the display device to the second external device is performed without a user's input. The method of claim 1,
The second external device and the display device are a control method of a display device that communicates with each other through Wi-Fi Peer-to-Peer (P2P). The method of claim 1,
The method of controlling a display apparatus further comprising the step of periodically entering a discovery mode by the communication unit. The method of claim 5,
The communication unit enters the discovery mode until the connection request signal is received. The method of claim 1,
The control method of a display apparatus, wherein the received connection request signal includes automatic conversion information of the video input source. The method of claim 7,
The information is included in a service discovery request frame generated by a user input. The method of claim 7,
The information is included in a service discovery request frame generated by using a vendor extension field of an initial request frame of an 802.11u Generic Advertising Service (GAS). The method of claim 1,
The received connection request signal includes a service discovery request frame for discovering the display device supporting a function of wirelessly receiving and displaying the second image from the second external device. In the display device,
Display,
An external device interface provided to be connected to the first external device by wire,
A communication unit provided to enable wireless communication with a second external device, and provided differently from the external device interface,
It includes a control unit,
The control unit,
Set a current image input source of the display device as the external device interface, and control the display to display a first image received from the first external device through the external device interface,
While the first image is displayed on the display, in response to a connection request signal received from the second external device through the communication unit, the connection request signal transmits the image input source of the display device to the second external device. Identify whether it contains predefined information that causes change,
In response to being identified that the connection request signal does not include the information, connection to the second external device is performed while the first image received through the external device interface is displayed,
In response to being identified that the connection request signal includes the information, a connection to the second external device is performed, and the image input source of the display apparatus is selected based on the information included in the connection request signal. A display apparatus configured to cause the display apparatus to display a second image received from the second external device on the display through the communication unit set as the image input source by changing from an external device interface to the communication unit. The method of claim 11,
Changing the image input source of the display device includes changing to the communication unit according to the received connection request signal. The method of claim 11,
Changing the image input source of the display device to the second external device is performed without a user's input according to the received connection request signal. The method of claim 11,
The communication unit is a display device that communicates with the second external device through Wi-Fi P2P. The method of claim 11,
The control unit is a display device that controls the communication unit to periodically enter a discovery mode. The method of claim 15,
The communication unit is a display device for entering the discovery mode until the connection request signal is received. The method of claim 11,
The controller is a display device that determines the automatic conversion information of the second external device included in the received connection request signal. The method of claim 17,
The information is included in a service discovery request frame generated by a user input. The method of claim 17,
The information is included in the service discovery request frame generated by using the vendor extension field of the initial request frame of the 802.11u GAS. The method of claim 11,
The received connection request signal includes a service discovery request frame for discovering the display device supporting a function of wirelessly receiving and displaying the second image from the second external device. In the display system,
A display device,
With the first external device,
Including a second external device,
The second external device,
A user input unit,
A first communication unit provided to wirelessly communicate with the display device,
A first display provided to display a source image,
It includes a first control unit,
The first control unit,
Transmitting a connection request signal according to a user input through the user input unit,
Establishing a connection with the display device having the connection request signal,
Controlling the first communication unit of the second external device to transmit the source image to the display device,
The display device,
An external device interface provided to be connected to the first external device by wire,
A second communication unit provided to enable wireless communication with the second external device and provided differently from the external device interface,
With the second display,
It includes a second control unit,
The second control unit,
Set a current image input source of the display device as the external device interface, and control the second display to display a first image received from the first external device through the external device interface,
While the first image is displayed on the second display, in response to a connection request signal received from the second external device through the second communication unit, the connection request signal is applied to the image input source of the display device. 2Identify whether it contains predefined information to change to an external device,
In response to being identified that the connection request signal does not include the information, connection to the second external device is performed while the first image received through the external device interface is displayed,
In response to being identified that the connection request signal includes the information, a connection to the second external device is performed, and the image input source of the display apparatus is selected based on the information included in the connection request signal. Display system in which the display device displays a second image received from the second external device on the second display through the second communication unit set as the image input source by changing from an external device interface to the second communication unit . A nonvolatile computer recording medium on which a program for executing the control method according to claim 1 is recorded.

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