IMAGE DISPLAY APPARATUS, MOBILE TERMINAL, AND IMAGE SYSTEM INCLUDING THE SAME

The present disclosure relates to an image display apparatus, a mobile terminal, and an image system including the same. An image display apparatus according to one embodiment of the present disclosure includes: a display; a signal processing device configured to output an image signal to the display; and an interface configured to exchange data with a mobile terminal or a server, in which the interface receives a connection request and a network address of the mobile terminal from the mobile terminal, and the signal processing device is configured to generate a certificate and a security key based on the network address of the mobile terminal, and transmit the generated certificate and security key to the mobile terminal. Therefore, the certificate may be dynamically generated.

CROSS-REFERENCE TO RELATED APPLICATION(S)

Pursuant to 35 U.S.C. § 119, this application claims the benefit of earlier filing date and right of priority to Korean Application No(s). 10-2023-0058415, May 4, 2023, the contents of which are all incorporated by reference herein in its entirety.

BACKGROUND

The present disclosure relates to an image display apparatus, a mobile terminal, and an image system including the same, and more particularly, to an image display apparatus, a mobile terminal, and an image system including the same which can dynamically generate a certificate.

2. Description of the Related Art

The image display apparatus is a device that displays an image.

Meanwhile, various images can be displayed through the image display apparatus, and in particular, a broadcast image based on a broadcast signal can be displayed.

In recent years, a scheme of sharing the content from a mobile terminal through mirroring has been attempted to share a content with peripheral devices.

However, there is an inconvenience in that setting for pairing between the image display apparatus and the mobile terminal should be each performed for the mirroring.

Further, there is a disadvantage in that sharing the content through the mirroring between the image display apparatus and the mobile terminal can be vulnerable to a security risk.

SUMMARY

An object of the present disclosure is to provide an image display apparatus, a mobile terminal, and an image system including the same that can dynamically generate a certificate.

Meanwhile, another object of the present disclosure is to provide an image display apparatus, a mobile terminal, and an image system including the same that can strengthen security when sharing a content between the image display apparatus and the mobile terminal.

Meanwhile, yet another object of the present disclosure is to provide an image display apparatus, a mobile terminal, and an image system including the same that can stably access a server even though a server address of the mobile terminal is varied.

In order to solve the problem, there is provided an image display apparatus according to one embodiment of the present disclosure, which includes: a display; a signal processing device configured to output an image signal to the display; and an interface configured to exchange data with a mobile terminal or a server, in which the interface receives a connection request and a network address of the mobile terminal from the mobile terminal, and the signal processing device performs control to generate a certificate and a security key based on the network address of the mobile terminal, and transmit the generated certificate and security key to the mobile terminal.

Meanwhile, the interface may receive, after transmitting the generated certificate and security key, a server address of a server executed by the mobile terminal, access the server of the mobile terminal based on the server address, and receive a content from the mobile terminal.

Meanwhile, the signal processing device may be configured to display the content on the display after receiving the content from the mobile terminal.

Meanwhile, the signal processing device may be configured to display content reception information after receiving the content from the mobile terminal.

Meanwhile, the server executed by the mobile terminal may include a hypertext transfer protocol secure server.

Meanwhile, the signal processing device may generate the certificate including a plurality of network addresses including the network address of the mobile terminal.

Meanwhile, in response to the signal processing device receiving a second network address included in the plurality of network addresses from the mobile terminal after transmitting the generated certificate and security key to the mobile terminal, the signal processing device may be configured to transmit the pre-generated certificate and security key to the mobile terminal.

Meanwhile, in case in which the signal processing device transmits the generated certificate and security key to the mobile terminal, receives the server address of the server executed by the mobile terminal, and then receives the second network address included in the plurality of network addresses from the mobile terminal, the signal processing device may access the server of the mobile terminal based on the server address of the server without additional transmission of the certificate and the security key to the mobile terminal to receive the content from the mobile terminal.

Meanwhile, in case in which the signal processing device transmits the generated certificate and security key to the mobile terminal, and then receives a second network address not included in the plurality of network addresses from the mobile terminal, the signal processing device may be configured to generate a second certificate and a second security key based on the second network address of the mobile terminal, and transmit the generated second certificate and second security key to the mobile terminal.

Meanwhile, the interface may receive, after transmitting the generated second certificate and security key, a second server address of a second server executed by the mobile terminal, access the server of the mobile terminal based on the second server address, and receive a second content from the mobile terminal.

Meanwhile, in case in which the signal processing device transmits the generated certificate and security key to the mobile terminal, and then receives a second connection request and a second network address from a second mobile terminal, the signal processing device may be configured to generate the second certificate and the second security key based on the second network address of the second mobile terminal, and transmit the generated second certificate and second security key to the second mobile terminal.

Meanwhile, the interface may receive, after transmitting the generated second certificate and second security key, a second server address of a second server executed by the second mobile terminal, access the server of the second mobile terminal based on the second server address, and receive a second content from the second mobile terminal.

In order to the solve the problem, there are provided a mobile terminal and an image system including the same according to one embodiment of the present disclosure, which include: a display; a controller configured to output an image signal to the display; and a wireless transceiver configured to exchange data with an image display apparatus, in which the controller performs control, when a sharing item of a content displayed on the display is selected or when a sharing application is executed, to transmit a connection request and a network address to the image display apparatus, receive a certificate and a security key received from the image display apparatus, and execute a server for sharing the content.

Meanwhile, the controller may be configured to transmit the server address to the image display apparatus after executing the server, and is configured to transmit the content to the image display apparatus based on the server access in the image display apparatus.

Meanwhile, in response to a sharing item of a second content displayed on the display being selected or in response to the sharing application being executed, the controller may be configured to, after executing the server, transmit a second connection request and a second network address to the image display apparatus, receive a second certificate and a second security key received from the image display apparatus, and execute a second server for sharing the second content.

Meanwhile, in response to the sharing item of the second content displayed on the display being selected or in response to the sharing application being executed after executing the server, the controller may be configured to, transmit the second connection request and the second network address to the image display apparatus, receive a second certificate and a second security key received from the image display apparatus, and execute the second server for sharing the second content again in response to the certificate and the security key being received from the image display apparatus again or the certificate and the security key being not received for a predetermined time.

Effects

According to one embodiment of the present disclosure, an image display apparatus and an image system including the same include: a display; a signal processing device configured to output an image signal to the display; and an interface configured to exchange data with a mobile terminal or a server, and the interface receives a connection request and a network address of the mobile terminal from the mobile terminal, and the signal processing device is configured to generate a certificate and a security key based on the network address of the mobile terminal, and transmit the generated certificate and security key to the mobile terminal. Therefore, the certificate may be dynamically generated. In addition, the security may be strengthened when sharing contents between the image display apparatus and the mobile terminal. Furthermore, even though a server address of the mobile terminal is varied, stable access may be made.

Meanwhile, the interface may receive, after transmitting the generated certificate and security key, a server address of a server executed by the mobile terminal, access the server of the mobile terminal based on the server address, and receive a content from the mobile terminal. Therefore, the certificate may be dynamically generated. In addition, the security may be strengthened when sharing contents between the image display apparatus and the mobile terminal.

Meanwhile, the signal processing device may be configured to display the content on the display after receiving the content from the mobile terminal. Therefore, the certificate may be dynamically generated, and the content may be conveniently shared.

Meanwhile, the signal processing device may be configured to display content reception information after receiving the content from the mobile terminal. Therefore, the certificate may be dynamically generated, and the content may be conveniently shared.

Meanwhile, the server executed by the mobile terminal may include a hypertext transfer protocol secure server. Accordingly, the certificate may be dynamically generated, and the security may be strengthened when sharing the contents between the image display apparatus and the mobile terminal.

Meanwhile, the signal processing device may generate the certificate including a plurality of network addresses including the network address of the mobile terminal. Therefore, the certificate may be dynamically generated.

Meanwhile, in response to the signal processing device receiving a second network address included in the plurality of network addresses from the mobile terminal after transmitting the generated certificate and security key to the mobile terminal, the signal processing device may be configured to transmit the pre-generated certificate and security key to the mobile terminal. Accordingly, the certificate may be conveniently generated when the second network address is received.

Meanwhile, in case in which the signal processing device transmits the generated certificate and security key to the mobile terminal, receives the server address of the server executed by the mobile terminal, and then receives the second network address included in the plurality of network addresses from the mobile terminal, the signal processing device may access the server of the mobile terminal based on the server address of the server without additional transmission of the certificate and the security key to the mobile terminal to receive the content from the mobile terminal. Accordingly, the content may be conveniently generated when the second network address is received.

Meanwhile, in case in which the signal processing device transmits the generated certificate and security key to the mobile terminal, and then receives a second network address not included in the plurality of network addresses from the mobile terminal, the signal processing device may be configured to generate a second certificate and a second security key based on the second network address of the mobile terminal, and transmit the generated second certificate and second security key to the mobile terminal. Accordingly, the second certificate different from the existing generated certificate may be dynamically generated when the second network address is received.

Meanwhile, the interface may receive, after transmitting the generated second certificate and security key, a second server address of a second server executed by the mobile terminal, access the server of the mobile terminal based on the second server address, and receive a second content from the mobile terminal. Accordingly, the contents may be conveniently shared between the image display apparatus and the mobile terminal based on the dynamically generated second certificate.

Meanwhile, in case in which the signal processing device transmits the generated certificate and security key to the mobile terminal, and then receives a second connection request and a second network address from a second mobile terminal, the signal processing device may be configured to generate the second certificate and the second security key based on the second network address of the second mobile terminal, and transmit the generated second certificate and second security key to the second mobile terminal. Accordingly, the contents may be conveniently shared between the image display apparatus and the mobile terminal based on the dynamically generated second certificate.

Meanwhile, the interface may receive, after transmitting the generated second certificate and second security key, a second server address of a second server executed by the second mobile terminal, access the server of the second mobile terminal based on the second server address, and receive a second content from the second mobile terminal. Accordingly, the contents may be conveniently shared between the image display apparatus and the mobile terminal based on the dynamically generated second certificate.

According to one embodiment of the present disclosure, a mobile terminal and an image system including the same include: a display; a controller configured to output an image signal to the display; and a wireless transceiver configured to exchange data with an image display apparatus, in which in response to a sharing item of a content displayed on the display being selected or in response to a sharing application being executed, the controller is configured to transmit a connection request and a network address to the image display apparatus, receive a certificate and a security key received from the image display apparatus, and execute a server for sharing the content. Therefore, the certificate may be dynamically generated. In addition, the security may be strengthened when sharing contents between the image display apparatus and the mobile terminal.

Meanwhile, the controller may be configured to transmit the server address to the image display apparatus after executing the server, and is configured to transmit the content to the image display apparatus based on the server access in the image display apparatus. Accordingly, the contents may be conveniently shared between the image display apparatus and the mobile terminal based on the dynamically generated certificate.

Meanwhile, in response to a sharing item of a second content displayed on the display being selected or in response to the sharing application being executed, the controller may be configured to, after executing the server, transmit a second connection request and a second network address to the image display apparatus, receive a second certificate and a second security key received from the image display apparatus, and execute a second server for sharing the second content. Accordingly, the second content may be conveniently shared between the image display apparatus and the mobile terminal based on the dynamically generated second certificate.

Meanwhile, in response to the sharing item of the second content displayed on the display being selected or in response to the sharing application being executed after executing the server, the controller may be configured to, transmit the second connection request and the second network address to the image display apparatus, receive a second certificate and a second security key received from the image display apparatus, and execute the second server for sharing the second content again in response to the certificate and the security key being received from the image display apparatus again or the certificate and the security key being not received for a predetermined time Accordingly, the contents may be conveniently shared between the image display apparatus and the mobile terminal based on the dynamically generated second certificate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

As used herein, the suffixes “module” and “unit” are added to simply facilitate preparation of this specification and are not intended to suggest special meanings or functions. Therefore, the suffixes “module” and “unit” may be used interchangeably.

FIG.1is a diagram illustrating an image display system according to one embodiment of the present disclosure.

Referring to the drawing, an image display system10according to one embodiment of the present disclosure includes an image display apparatus100and a mobile terminal600.

Meanwhile, the image display system10according to one embodiment of the present disclosure may further include an access point apparatus500.

The access point apparatus500may allocate a network address to the image display apparatus100, the mobile terminal600, etc., and transmit data based on the allocated network address.

Meanwhile, the access point apparatus500may vary the network address allocated to the mobile terminal500every access of the mobile terminal600.

The image display apparatus100according to one embodiment of the present disclosure includes a signal processing device170ofFIG.2, which outputs an image signal to a display180, and a network interface135ofFIG.2, which exchanges data with the mobile terminal600or a server.

The image display apparatus100according to one embodiment of the present disclosure is configured to receive a connection request and the network address of the mobile terminal600from the mobile terminal600, generate a certificate and a security key based on the network address of the mobile terminal, and transmit the generated certificate and security key to the mobile terminal600. Therefore, the certificate may be dynamically generated. In addition, a security may be strengthened when sharing a content between the image display apparatus100and the mobile terminal600. Furthermore, even though a server address of the mobile terminal600is varied, the image display apparatus100may stably access a server.

Meanwhile, the image display apparatus100according to one embodiment of the present disclosure may receive, after transmitting the generated certificate and security key, a server address of a server executed by the mobile terminal600, access the server of the mobile terminal600based on the server address, and receive a content from the mobile terminal600. In addition, the content may be conveniently shared between the image display apparatus100and the mobile terminal600.

Meanwhile, the server executed by the mobile terminal600includes a hypertext transfer protocol secure server. In addition, the certificate may be dynamically generated, and the security may be strengthened when sharing the content between the image display apparatus100and the mobile terminal600.

The mobile terminal100according to one embodiment of the present disclosure includes a display680, a controller670ofFIG.5, which outputs an image signal to the display680, and a wireless transceiver610ofFIG.5, which exchanges data with the image display apparatus100.

The mobile terminal100according to one embodiment of the present disclosure controls, when a sharing item of a content displayed on the display680is selected or when a sharing application is executed, to transmit a connection request and a network address to the image display apparatus100, receives a certificate and a security key received from the image display apparatus100, and executes a server for sharing the content. Therefore, the certificate may be dynamically generated. In addition, the security may be strengthened when sharing a content between the image display apparatus100and the mobile terminal600.

Meanwhile, the mobile terminal100according to one embodiment of the present disclosure is configured to transmit the server address to the image display apparatus100after executing the server, and is configured to transmit the content to the image display apparatus100based on the server access in the image display apparatus100. Accordingly, the content may be conveniently shared between the image display apparatus100and the mobile terminal600based on the dynamically generated certificate.

Meanwhile, as the image display apparatus100ofFIG.1, a TV, a monitor, a tablet PC, or a vehicle display apparatus is available.

Meanwhile, as the mobile terminal600ofFIG.1, a smartphone, a tablet PC, a laptop computer, etc., is available.

FIG.2is an internal block diagram illustrating the image display apparatus ofFIG.1.

Referring to the drawing, the image display apparatus100according to one embodiment of the present disclosure may include an image receiver105, an external device interface130, a network interface135, a storage device140, a user input interface150, a sensor device (not illustrated), a signal processing device170, a display180, and an audio output device185.

The image receiver105may receive an input image. For example, the image receiver105may receive a broadcast image, an HDMI image, or an external input image such as a streamed image.

The image receiver105may include a tuner110, a demodulator120, and an external device interface130.

Unlike the drawing, the image receiver105may include the tuner110, the demodulator120, the external device interface130, and a network interface135.

The tuner110selects a channel selected by a user from among radio frequency (RF) broadcast signals received through an antenna (not illustrated) or an RF broadcast signal corresponding to all pre-stored channels. In addition, the tuner110converts the selected RF broadcast signal into a middle-frequency signal, a baseband image, or a voice signal.

To receive broadcast signals of a plurality of channels, a plurality of tuners110may be provided. Alternatively, a single tuner to receive a plurality of channels simultaneously may be provided.

The demodulator120receives and demodulates a digital IF (DIF) signal converted by the tuner110.

After performing demodulation and channel decoding, the demodulator120may output a stream signal (TS). Herein, the stream signal may be a signal obtained by multiplexing an image signal, voice signal or data signal.

The stream signal output from the demodulator120may be input to the signal processing device170. After performing demultiplexing and image/voice signal processing, the signal processing device170outputs an image to the display180and voice to the audio output device185.

The external device interface130may transmit or receive data to or from a connected external device (not illustrated), for example, a set-top box50.

To this end, the external device interface130may include an A/V input/output device (not illustrated), a wireless transceiver (not illustrated), and the like.

The external device interface130may be connected to external devices such as a digital versatile disc (DVD) player, a Blu-ray player, a gaming device, a camera, a camcorder, a computer (laptop), and a set-top box in a wired/wireless manner, and perform input/output operations with external devices.

The A/V input/output device in the external device interface130may receive the image and voice signal of the external device. Meanwhile, the wireless transceiver (not illustrated) in the external device interface130may perform short-range wireless communication with other electronic devices.

The external device interface130may exchange data with a neighboring mobile terminal600via the wireless transceiver (not illustrated). In particular, in the mirroring mode, the external device interface130may receive device information, information about an executed application and an application image from the mobile terminal600.

The network interface135provides an interface for connecting the image display apparatus to a wired/wireless network including the Internet. For example, the network interface135may receive content or data provided by the Internet or a content provider or network operator through a network.

The network interface135may include a wireless transceiver (not illustrated).

The storage device140may store programs for processing and control of signals in the signal processing device170, and also store a signal-processed image, voice signal or data signal.

The storage device140may function to temporarily store an image signal, a voice signal, or a data signal input through the external device interface130. In addition, the storage device140may store information about a predetermined broadcast channel through the channel memorization function such as a channel map.

While it is illustrated inFIG.2that the storage device140is provided separately from the signal processing device170, embodiments of the present disclosure are not limited thereto. The storage device140may be included in the signal processing device170.

The user input interface150may transmit a signal input by the user to the signal processing device170or transmit a signal from the signal processing device170to the user.

For example, the user input interface150may transmit/receive user input signals such as power on/off, channel selection, and screen setting to/from the remote controller200, deliver user input signals input through local keys (not illustrated) such as a power key, a channel key, a volume key, or a setting key, deliver user input signals input through a sensor device (not illustrated) to sense user gestures to the signal processing device170, or transmit a signal from the signal processing device170to the sensor device (not illustrated).

The signal processing device170may demultiplex streams input through the tuner110, demodulator120, network interface135, or external device interface130, or process demultiplexed signals. Thereby, the signal processing device170may generate an output signal for outputting an image or voice.

For example, the signal processing device170may receive a broadcast signal or HDMI signal received from the image receiver105, perform signal processing based on the received broadcast signal or HDMI signal, and output the signal-processed image signal.

An image signal image-processed by the signal processing device170may be input to the display180and an image corresponding to the image signal may be displayed. In addition, the image signal which is image-processed by the signal processing device170may be input to an external output device through the external device interface130.

A voice signal processed by the signal processing device170may be output to the audio output device185in the form of sound. In addition, the voice signal processed by the signal processing device170may be input to an external output device through the external device interface130.

Although not illustrated inFIG.2, the signal processing device170may include a demultiplexer, an image processor, and the like. That is, the signal processing device170may perform various signal processing, and thus may be implemented in the form of a System On Chip (SOC). This will be described later with reference toFIG.3.

Additionally, the signal processing device170may be configured to overall operation of the image display apparatus100. For example, the signal processing device170may be configured to the tuner110to tune to an RF broadcast corresponding to a channel selected by the user or a pre-stored channel.

The signal processing device170may be configured to the image display apparatus100according to a user command input through the user input interface150or an internal program.

The signal processing device170may be configured to the display180to display an image. Herein, the image displayed on the display180may be a still image, a moving image, a 2D image, or a 3D image.

The signal processing device170may be configured to display the predetermined object in an image displayed on the display180. For example, the object may be at least one of an accessed web page (a newspaper, a magazine, or the like), electronic program guide (EPG), various menus, a widget, an icon, a still image, a moving image, and text.

The signal processing device170may recognize the location of the user based on an image captured by a capture device (not illustrated). For example, the signal processing device170may recognize a distance (a z-axis coordinate) between the user and the image display apparatus100. Additionally, the signal processing device170may recognize an x-axis coordinate and a y-axis coordinate corresponding to the location of the user in the display180.

The display180generates drive signals by converting an image signal, data signal, OSD signal, and control signal processed by the signal processing device170or an image signal, data signal, and control signal received from the external device interface130. The display180may be configured as a touch screen and used as an input device in addition to an output device.

The audio output device185receives a voice signal processed by the signal processing device170and outputs voice.

The capture device (not illustrated) captures the user. The capture device (not illustrated) may be implemented with one camera, but is not limited thereto, and may be implemented with a plurality of cameras. Image information captured by the capture device (not illustrated) may be input to the signal processing device170.

The signal processing device170may sense user gestures based on an image captured by the capture device (not illustrated), a sensed signal from the sensor device (not illustrated), or a combination thereof.

The signal processing device170may be implemented in the form of a System On Chip (SOC).

The power supply190supplies corresponding power throughout the image display apparatus100. In particular, the power supply190may supply power to the signal processing device170implemented in the form of a System On Chip (SOC), the display180for displaying images, an audio output device185for outputting audio, or the like.

Specifically, the power supply190may include a converter to convert alternating current (AC) power into direct current (DC) power and a DC-DC converter to change the level of the DC power.

The remote controller200transmits user input to the user input interface150. To this end, the remote controller200may employ Bluetooth, radio frequency (RF) communication, infrared (IR) communication, ultra-wideband (UWB), or ZigBee. In addition, the remote controller200may receive an image signal, a voice signal, or a data signal output from the user input interface150, and display the signals on the remote controller200or voice-output.

The image display apparatus100may be a fixed or mobile digital broadcast receiver capable of receiving digital broadcast services.

The block diagram of the image display apparatus100illustrated inFIG.2is a block diagram for one embodiment of the present disclosure. Constituents of the block diagram may be integrated, added or omitted according to the specifications of the image display apparatus100which is implemented in reality. That is, two or more constituents may be combined into one constituent, or one constituent may be subdivided into two or more constituents, when necessary. In addition, the function performed in each block is simply illustrative, and it should be noted that specific operations or devices of the blocks do not limit the scope of the present disclosure.

FIG.3is an internal block diagram illustrating the signal processing device ofFIG.2.

Referring to the drawings, the signal processing device170according to one embodiment of the present disclosure may include a demultiplexer310, an image processor320, a processor330, and an audio processor370. In addition, the signal processing device170may further include a data processor (not illustrated).

The demultiplexer310demultiplexes an input stream. For example, when an MPEG-2 TS is input, the demultiplexer310may demultiplex the MPEG-2 TS to separate the MPEG-2 TS into an image signal, a voice signal and a data signal. Herein, the stream signal input to the demultiplexer310may be a stream signal output from the tuner110, the demodulator120or the external device interface130.

The image processor320may perform signal processing on an input image. For example, the image processor320may perform image processing of an image signal demultiplexed by the demultiplexer310.

To this end, the image processor320includes an image decoder325, a scaler335, an image-quality processor635, an image encoder (not illustrated), an OSD processor340, a frame rate converter350, and a formatter360, and the like.

The image decoder325decodes the demultiplexed image signal, and the scaler335scales the resolution of the decoded image signal such that the image signal can be output through the display180.

The image decoder325may include decoders of various standards. For example, the image decoder325may include an MPEG-2 decoder, an H.264 decoder, a 3D image decoder for color images and depth images, and a decoder for multi-viewpoint images.

The scaler335may scale an input image signal that has been image decoded by the image decoder325or the like.

For example, the scaler335may perform up-scaling when the size or resolution of the input image signal is small, and down-scaling when the size or resolution of the input image signal is large.

The image-quality processor635may perform image quality processing on an input image signal that has been image decoded in the image decoder325or the like.

For example, the image-quality processor635may perform noise removal processing of the input image signal, expand the resolution of gray levels of an input image signal, improve image resolution, performs high dynamic range (HDR) based signal processing, change the frame rate, or perform image quality processing corresponding to panel characteristics, particularly organic light emitting panels or the like.

The OSD processor340generates an OSD signal automatically or according to user input. For example, the OSD processor340may generate a signal for display of various kinds of information in the form of images or text on the screen of the display180based on a user input signal. The generated OSD signal may include various data including the user interface screen window of the image display apparatus100, various menu screen windows, widgets, and icons. The generated OSD signal may also include a 2D object or a 3D object.

The OSD processor340may generate a pointer which can be displayed on the display, based on a pointing signal input from the remote controller200. In particular, the pointer may be generated by a pointing signal processing device (not illustrated), and the OSD processor340may include the pointing signal generator. Of course, it is possible to provide the pointing signal processing device (not illustrated) separately from the OSD processor340.

The frame rate converter (FRC)350may convert the frame rate of an input image. The FRC350may output frames without performing separate frame rate conversion.

The formatter360may change the format of an input image signal into an image signal for display on a display and output the changed image signal.

In particular, the formatter360may change the format of the image signal to correspond to the display panel.

Meanwhile, the formatter360may change the format of an image signal. For example, the format of the 3D image signal may be changed to any one format of various 3D formats such as a Side by Side format, a Top/Down format, a Frame Sequential format, an Interlaced format, a Checker Box format.

The processor330may be configured to overall operations within the image display apparatus100or signal processing device170.

For example, the processor330may be configured to the tuner110to select (tuning) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

The processor330may be configured to the image display apparatus100according to a user command input through the user input interface150or an internal program.

The processor330may perform data transfer control with the network interface135or the external device interface130.

The processor330may be configured to operations of the demultiplexer310and the image processor320within the signal processing device170.

An audio processor370in the signal processing device170may voice-process a demultiplexed voice signal. To this end, the audio processor370may include various decoders.

The audio processor370in the signal processing device170may perform processing such as adjustment of bass, treble, and volume.

The data processor (not illustrated) in the signal processing device170may perform data processing on a demultiplexed data signal. For example, when the demultiplexed data signal is a coded data signal, the data processor (not illustrated) may decode the data signal. The coded data signal may be electronic program guide information including broadcast information such as a start time and end time of a broadcast program broadcast on each channel.

The block diagram of the signal processing device170illustrated inFIG.3is a block diagram for one embodiment of the present disclosure. Constituents of the block diagram may be integrated, added, or omitted according to the specifications of the signal processing device170which is implemented in reality.

In particular, the frame rate converter350and the formatter360may be separately provided in addition to the image processor320.

FIG.4Aillustrates a method for controlling the remote controller ofFIG.2.

As illustrated inFIG.4A(a), a pointer205corresponding to the remote controller200may be displayed on the display180.

The user may move the remote controller200up and down, left and right (FIG.4A(b)), or back and forth (FIG.4A(c)) or rotate the same. The pointer205displayed on the display180of the image display apparatus corresponds to movement of the remote controller200. As illustrated in the drawings, since the pointer205moves according to movement of the remote controller200in the 3D space, the remote controller200may be referred to as a spatial remote control or a 3D pointing device.

FIG.4A(b) illustrates a case where the pointer205displayed on the display180of the image display apparatus moves to the left when the user moves the remote controller200to the left.

Information about movement of the remote controller200sensed through a sensor of the remote controller200is transmitted to the image display apparatus. The image display apparatus may calculate coordinates of the pointer205based on the information about the movement of the remote controller200. The image display apparatus may display the pointer205such that the pointer205corresponds to the calculated coordinates.

FIG.4A(c) illustrates a case where the user moves the signal processing device170away from display180in a state where the user presses down a specific button in the remote controller200. In this case, a selected area on the display180corresponding to the pointer205may be zoomed in and displayed with the size thereof increased. On the other hand, when the user moves the remote controller200closer to the display180, the selected area in the display180corresponding to the pointer205may be zoomed out and displayed with the size thereof reduced. Alternatively, the selected area may be zoomed out when the remote controller200moves away from the display180, and may be zoomed in when the remote controller200moves closer to the display180.

Vertical and lateral movement of the remote controller200may not be recognized while the specific button in the remote controller200is pressed down. That is, when the remote controller200approaches or moves away from the display180, vertical and lateral movements thereof may not be recognized, but back-and-forth movement thereof may be recognized. When the specific button in the remote controller200is not pressed down, the pointer205only moves according to vertical and lateral movements of the remote controller200.

The speed and direction of movement of the pointer205may correspond to the speed and direction of movement of the remote controller200.

FIG.4Bis an internal block diagram illustrating the remote controller ofFIG.2.

Referring to the drawing, the remote controller200may include a wireless transceiver425, a user input device430, a sensor device440, an output device450, a power supply460, a storage device470, and a controller480.

The wireless transceiver425transmits and receives signals to and from one of the image display apparatuses according to embodiments of the present disclosure described above. Hereinafter, one image display apparatus100according to one embodiment of the present disclosure will be described.

In this embodiment, the remote controller200may include an RF module421capable of transmitting and receiving signals to and from the image display apparatus100according to an RF communication standard. The remote controller200may further include an IR module423capable of transmitting and receiving signals to and from the image display apparatus100according to an IR communication standard.

In this embodiment, the remote controller200transmits a signal including information about movement of the remote controller200to the image display apparatus100via the RF module421.

In addition, the remote controller200may receive a signal from the image display apparatus100via the RF module421. When necessary, the remote controller200may transmit commands related to power on/off, channel change, and volume change to the image display apparatus100via the IR module423.

The user input device430may include a keypad, a button, a touchpad, or a touchscreen. The user may input a command related to the image display apparatus100with the remote controller200by manipulating the user input device435. When the user input device435includes a hard key button, the user may input a command related to the image display apparatus100with the remote controller200by pressing the hard key button. When the user input device435includes a touchscreen, the user may input a command related to the image display apparatus100with the remote controller200by touching a soft key on the touchscreen. The user input device430may include various kinds of input means such as a scroll key and a jog key which are manipulatable by the user, but it should be noted that this embodiment does not limit the scope of the present disclosure.

The sensor device440may include a gyro sensor441or an acceleration sensor443. The gyro sensor441may sense information about movement of the remote controller200.

For example, the gyro sensor441may sense information about movement of the remote controller200with respect to the X, Y and Z axes. The acceleration sensor443may sense information about the movement speed of the remote controller200. The sensor device440may further include a distance measurement sensor to sense a distance to the display180.

The output device450may output an image signal or voice signal corresponding to manipulation of the user input device435or a signal transmitted from the image display apparatus100. The user may recognize, via the output device450, whether the user input device435is manipulated or the image display apparatus100is controlled.

For example, the output device450may include an LED module451to be turned on when the user input device35is operated or signals are transmitted to and received from the image display apparatus100via the wireless transceiver425, a vibration module453to generate vibration, a sound output module455to output sound, or a display module457to output an image.

The power supply460supplies power to the remote controller200. When the remote controller200does not move for a predetermined time, the power supply460may stop supplying power to save power. The power supply460may resume supply of power when the predetermined key provided to the remote controller200is manipulated.

The storage device470may store various kinds of programs and application data necessary for control or operation of the remote controller200. When the remote controller200wirelessly transmits and receives signals to and from the image display apparatus100via the RF module421, the remote controller200and the image display apparatus100may transmit and receive signals in a predetermined frequency band. The controller480of the remote controller200may store, in the storage device470, information about, for example, a frequency band enabling wireless transmission and reception of signals to and from the image display apparatus100which is paired with the remote controller200, and reference the same.

The controller480controls overall operation related to control of the remote controller200. The controller480may transmit, via the wireless transceiver425, a signal corresponding to manipulation of a predetermined key in the user input device435or a signal corresponding to movement of the remote controller200sensed by the sensor device440to the image display apparatus100.

The user input interface150of the image display apparatus100may include a wireless transceiver151capable of wirelessly transmitting and receiving signals to and from the remote controller200and a coordinate calculator415capable of calculating coordinates of the pointer corresponding to operation of the remote controller200.

The user input interface150may wirelessly transmit and receive signals to and from the remote controller200via an RF module412. In addition, the user input interface150may receive, via an IR module413, a signal transmitted from the remote controller200according to an IR communication standard.

The coordinate calculator415may calculate coordinates (x, y) of the pointer205to be displayed on the display180, by correcting hand tremor or an error in a signal corresponding to operation of the remote controller200which is received via the wireless transceiver151.

The transmitted signal of the remote controller200input to the image display apparatus100via the user input interface150is transmitted to the signal processing device170of the image display apparatus100. The signal processing device170may determine information about an operation of the remote controller200or manipulation of a key from the signal transmitted from the remote controller200, and control the image display apparatus100according to the information.

As another example, the remote controller200may calculate coordinates of the pointer corresponding to movement thereof and output the same to the user input interface150of the image display apparatus100. In this case, the user input interface150of the image display apparatus100may transmit, to the signal processing device170, information about the received coordinates of the pointer without separately correcting hand tremor or the error.

As another example, in contrast with the example of the drawing, the coordinate calculator415may be provided in the signal processing device170rather than in the user input interface150.

FIG.5is an internal block diagram illustrating the mobile terminal ofFIG.1.

Referring to the drawing, the mobile terminal600may include a wireless transceiver610, an audio/video (A/V) input device620, a user input device630, a sensing device640, and an output device650, a memory660, an interface625, a controller670and a power supply690.

The wireless transceiver610may include a broadcast reception module611, a mobile communication module613, a wireless communication module615, a sound transceiver617, and a GPS module619.

The broadcast reception module611may receive at least one of a broadcast signal or broadcast-related information from an external broadcast management server over a broadcast channel. Herein, the broadcast channel may include a satellite channel and a terrestrial channel.

The broadcast signal and/or broadcast-related information received through the broadcaster reception module611may be stored in the memory660.

The mobile communication module613transmits and receives a radio signal to and from at least one of a base station, an external terminal or a server over a mobile communication network. Herein, the radio signal may include a voice call signal, a video call signal, or various kinds of data according to transmission and reception of a text/multimedia message.

The wireless communication module615, which refers to a module for wireless communication access, may be installed inside or outside the mobile terminal600. For example, the wireless communication module615may perform Wi-Fi-based wireless communication or Wi-Fi Direct-based wireless communication.

The sound transceiver617may perform sound communication. In the sound communication mode, the sound transceiver617may add data of predetermined information to audio data which is to be output and output sound. In addition, in the sound communication mode, the sound transceiver617may extract data of predetermined information from received sound.

Applicable short-range communication technologies may include Bluetooth, radio frequency identification (RFID), Infrared Data Association (IrDA), Ultra-Wideband (UWB), and ZigBee.

The GPS module619may receive location information from a plurality of GPS satellites.

The A/V input device620is used for input of an audio signal or a video signal and may include a camera621and a microphone623.

The user input device630generates key input data input by the user to control operation of a terminal of the user. To this end, the user input device630may include a keypad, a dome switch, and a touchpad (resistive touchpad/capacitive touchpad). In particular, the touchpad may form a layered architecture together with the display680, thereby realizing a touchscreen.

The sensing device640may generate a sensing signal for controlling operation of the mobile terminal600by sensing the current state of the mobile terminal600, for example by sensing whether the mobile terminal600is in the open or closed position, where the mobile terminal600is located, and whether the user contacts the mobile terminal600.

The sensing device640may include a proximity sensor641, a pressure sensor643and a motion sensor645. The motion sensor645may employ an acceleration sensor, a gyro sensor, a gravity sensor and the like to sense movement or the location of the mobile terminal. In particular, the gyro sensor, which is used to measure an angular speed, may sense orientation (angle) of the mobile terminal with respect to a reference direction.

The output device650may include a display680, an audio output device653, a notification device655, and a haptic module657.

The display680outputs and displays information processed by the mobile terminal600.

As described above, when the display680forms a layered architecture with the touchpad to implement a touchscreen, the display680may be used not only as an output device but also as an input device for input of information according to user touch.

The audio output device653outputs audio data received from the wireless transceiver610or stored in the memory660. The audio output device653may include a speaker and a buzzer.

The notification device655outputs a signal for reporting occurrence of an event in the mobile terminal600. For example, the notification device655may output a signal in the form of vibration.

The haptic module657generates various haptic effects which may be felt by the user. A typical example of the haptic effects generated by the haptic module657is vibration.

The memory660may store a program for processing and control of the controller670, and functions to temporarily store input data or output data (e.g., a phonebook, a message, a still image, a moving image, or the like).

The interface625serves as an interface for all devices connected to the mobile terminal600. The interface625may serve to receive data or power from external devices and transfer the same to the internal constituents of the mobile terminal600and to transmit data from the mobile terminal600to external devices.

The controller670typically controls operations of the aforementioned respective elements, thereby controlling overall operation of the mobile terminal. For example, the controller670may perform control or processing related to voice communication, data communication, video communication, and the like. The controller670may also include a multimedia playback module681to reproduce multimedia. The multimedia playback module681may be provided in the controller670as hardware or may be configured separately from the controller670.

The power supply690supplies power necessary for operations of the respective constituents according to control of the controller670when external power or internal power is applied thereto.

The block diagram of the mobile terminal600illustrated inFIG.5is simply illustrative. The respective constituents of the block diagram may be integrated, added or omitted according to the specifications of the mobile terminal600. That is, two or more constituents may be combined into one constituent, or one constituent may be subdivided into two or more constituents, when necessary. In addition, the function performed in each block is simply illustrative, and it should be noted that specified operations or devices of the blocks do not limit the scope of the present disclosure.

FIG.6is a flowchart illustrating an example of an operation method of an image display apparatus according to one embodiment of the present disclosure.

Referring to the drawing, a network interface135in the image display apparatus100according to one embodiment of the present disclosure receives a connection request from the mobile terminal600(S611).

For example, the image display apparatus100according to one embodiment of the present disclosure may receive a connection request from the mobile terminal600when a sharing item of a content displayed in a display680is selected or when a sharing application is executed, in the mobile terminal600.

In addition, the network interface135in the image display apparatus100receives a network address of the mobile terminal600(S613).

For example, the network interface135in the image display apparatus100may receive the connection request jointly with the network address of the mobile terminal600when receiving the connection request from the mobile terminal600.

In this case, the network address of the mobile terminal600may be a network address allocated by the access point apparatus500accessed by the mobile terminal600.

For example, the network address of the mobile terminal600may be 192.168.0.2.

Next, the signal processing device170in the image display apparatus100generates a certificate and a security key based on a network address of the mobile terminal600(S615). In this case, the security key may include a private key.

Meanwhile, the signal processing device170in the image display apparatus100may generate a certificate including a plurality of network addresses including the network address of the mobile terminal600when generating the certificate.

Specifically, the signal processing device170in the image display apparatus100may generate the certificate including the plurality of network addresses by specifying the plurality of network addresses to subject alt name in the certificate.

For example, the signal processing device170in the image display apparatus100may generate a certificate including a plurality of network addresses including 192.168.0.1 to 192.168.0.199 including 192.168.0.2 when the network address of the mobile terminal600is 192.168.0.2.

As another example, the signal processing device170in the image display apparatus100may generate a certificate including a plurality of network addresses including 192.168.0.200 to 192.168.0.255 including 192.168.0.201 when the network address of the mobile terminal600is 192.168.0.201.

As such, the plurality of network addresses is included in the certificate, so even though the network address of the mobile terminal600is thereafter varied within a similar range, the certificate may not be separately generated, so efficient certificate management may be performed.

Next, the signal processing device170in the image display apparatus100is configured to transmit the generated certificate and security key to the mobile terminal600through the network interface135(S620).

The mobile terminal600executes the server for sharing the content by using the certificate and security key generated by the image display apparatus100.

As such, since the mobile terminal600and the image display apparatus100exchange respective information to execute the server, the certificate may be dynamically generated. Accordingly, the security may be strengthened between the mobile terminal600and the image display apparatus100.

In this case, the server may include a hypertext transfer protocol secure server. As such, the mobile terminal600executes the HTTPS server to strengthen the security when sharing the content.

The mobile terminal600transmits a server address of the server to the image display apparatus100after executing the server.

In response thereto, the image display apparatus100receives the server address of the server for sharing the content from the mobile terminal600(S626).

Meanwhile, the server address may include the network address of the mobile terminal.

For example, when the network address of the mobile terminal600is 192.168.0.2, the server address may be https://192.168.0.2:9999/xxx/xxx. In this case, 9999 may represent a port.

Next, the signal processing device170in the image display apparatus100is configured to access the mobile terminal600through the received server address through the network interface135(S630).

In addition, the signal processing device170in the image display apparatus100receives the content through the network interface135(S636).

In this case, the content may include an image, a moving picture, a text, an application, or an audio file.

Next, the signal processing device170in the image display apparatus100may be configured to display the received content (S640). Accordingly, the content may be conveniently shared between the image display apparatus100and the mobile terminal600.

FIG.7is a flowchart illustrating one example of an operation method of a mobile terminal according to one embodiment of the present disclosure.

Referring to the drawing, the controller670of the mobile terminal600according to one embodiment of the present disclosure judges whether a content sharing item is selected or whether a sharing application is executed based on an input signal (S605), and the wireless transceiver610of the mobile terminal600transmits a connection request to the image display apparatus100for content sharing (S610).

In response thereto, the image display apparatus100receives the connection request from the mobile terminal600.

Meanwhile, the wireless transceiver610of the mobile terminal600transmits a network address of the mobile terminal600to the image display apparatus100(S612).

For example, the wireless transceiver610of the mobile terminal600may transmit the network address of the mobile terminal600jointly when transmitting the connection request to the image display apparatus100. In response thereto, the image display apparatus100receives the network address of the mobile terminal600from the mobile terminal600.

In this case, the network address of the mobile terminal600may be a network address allocated by the access point apparatus500accessed by the mobile terminal600.

For example, the network address of the mobile terminal600may be 192.168.0.2.

Meanwhile, the wireless transceiver610of the mobile terminal600receives the certificate and the security key generated by the image display apparatus100(S621). In this case, the security key may include the private key.

Meanwhile, the image display apparatus100may generate a certificate including a plurality of network addresses including the network address of the mobile terminal600when generating the certificate.

Specifically, in the case of the certificate received by the wireless transceiver610of the mobile terminal600, subject alt name in the certificate may include a plurality of network addresses.

For example, the wireless transceiver610of the mobile terminal600may receive a certificate including a plurality of network addresses including 192.168.0.1 to 192.168.0.199 including 192.168.0.2 when the network address of the mobile terminal600is 192.168.0.2.

As another example, the wireless transceiver610of the mobile terminal600may receive a certificate including a plurality of network addresses including 192.168.0.200 to 192.168.0.255 including 192.168.0.201 when the network address of the mobile terminal600is 192.168.0.201.

Next, the controller670of the mobile terminal600executes a server for sharing a content after receiving the certificate and the security key (S623).

As such, since the mobile terminal600and the image display apparatus100exchange respective information to execute the server, the certificate may be dynamically generated. Accordingly, the security may be strengthened between the mobile terminal600and the image display apparatus100.

In this case, the server may include a hypertext transfer protocol secure server. As such, the mobile terminal600executes the HTTPS server to strengthen the security when sharing the content.

Next, the wireless transceiver610of the mobile terminal600transmits a server address of the server to the image display apparatus100after executing the server (S625).

In response thereto, the image display apparatus100receives the server address of the server for sharing the content from the mobile terminal600.

Meanwhile, the server address may include the network address of the mobile terminal.

For example, when the network address of the mobile terminal600is 192.168.0.2, the server address may be https://192.168.0.2:9999/xxx/xxx. In this case, 9999 may represent a port.

Next, the image display apparatus100accesses the mobile terminal600through the received server address.

In response thereto, the mobile terminal600performs wireless access to the image display apparatus100based on the server address (S631).

In addition, the controller670of the mobile terminal600transmits a content to the wirelessly accessed image display apparatus100(S635). Accordingly, the content may be conveniently shared between the image display apparatus100and the mobile terminal600.

In this case, the content may include an image, a moving picture, a text, an application, or an audio file.

FIGS.8Ato 11D are diagrams referred to for description of the operation method ofFIG.6or7.

FIG.8Aillustrates that a gallery screen810is displayed on the display680of the mobile terminal600in a state in which a predetermined image820is displayed in the display180of the image display apparatus100.

The gallery screen810may include a plurality of images or moving pictures.

Meanwhile, the access point apparatus500may allocate a network address for the network access of the mobile terminal600.

For example, the network address of the mobile terminal600may be 192.168.0.2.

FIG.8Billustrates that a first image item840ain the gallery screen810in the mobile terminal600is focused.

The controller670of the mobile terminal600may be configured to the first image item840ato be focused and displayed when the first image item840ais selected in the gallery screen810.

Next,FIG.8Cillustrates that a first image840bcorresponding to first image item840ain the gallery screen810in the mobile terminal600is displayed.

Referring to the drawing, the controller670of the mobile terminal600may be configured to the first image840bcorresponding to the first image item840ato be displayed in the display680when the first image item840ais selected in the gallery screen810.

In this case, the controller670of the mobile terminal600may be configured to a menu item845for sharing to be displayed in addition to the first image840b.

When the menu item845is selected, the controller670of the mobile terminal600may be configured to a sharing item847to be displayed in the display680as illustrated in FIG. 8D.

FIG. 8D illustrates that the first image840band the sharing item847are displayed in the display680.

Next, the controller670of the mobile terminal600may be configured to at least one of the sharing application items849ato849dto be displayed when the sharing item847is selected.

FIG.8Eillustrates that the first image840band the sharing application items849ato849dare displayed in the display680.

Meanwhile, when any one sharing application item849dis selected among the sharing application item849ato849d, the controller670of the mobile terminal600may be configured to the sharing application to be executed.

In this case, the sharing application may be an application for sharing the content with the image display apparatus100. For example, the sharing application may be a ThinQ application.

Meanwhile, as the sharing application in the mobile terminal is executed, the controller670of the mobile terminal600transmits, to the image display apparatus100, a connection request to the mobile terminal600. This is described with reference toFIG.9A.

FIG.9Ais a diagram illustrating a signal flow between the mobile terminal600and the image display apparatus100.

Referring to the drawing, the controller670of the mobile terminal600transmits the connection request and the network address to the image display apparatus100based on selection of the content sharing item or execution of the sharing application (S610).

In response thereto, the image display apparatus100receives the connection request and the network address from the mobile terminal600.

Next, the signal processing device170in the image display apparatus100generates a certificate and a security key based on the network address of the mobile terminal600(S615).

Meanwhile, the signal processing device170in the image display apparatus100may generate a certificate including a plurality of network addresses including the network address of the mobile terminal600when generating the certificate.

Specifically, the signal processing device170in the image display apparatus100may generate the certificate including the plurality of network addresses by specifying the plurality of network addresses to subject alt name in the certificate.

Next, the image display apparatus100transmits the generated certificate and security key to the mobile terminal600(620).

Next, the mobile terminal600executes a server for sharing content after receiving the certificate and the security key (S623). As such, since the mobile terminal600and the image display apparatus100exchange respective information to execute the server, the certificate may be dynamically generated.

Next, the wireless transceiver610of the mobile terminal600transmits a server address of the server to the image display apparatus100after executing the server (S625).

Meanwhile, the server address may include the network address of the mobile terminal.

For example, when the network address of the mobile terminal600is 192.168.0.2, the server address may be https://192.168.0.2:9999/xxx/xxx.

Next, the image display apparatus100accesses the mobile terminal600through the received server address through the network interface135(S630).

Thereafter, the mobile terminal600transmits the content to the image display apparatus100, and the image display apparatus100receives the content from the mobile terminal600.

FIG.9Bis a diagram illustrating various examples of a signal between the mobile terminal600and the image display apparatus100.

Referring to the drawing, a network address MGa of the mobile terminal600received in step S613ofFIG.9Amay be exemplified as x.x.x.2 as in the drawing.

The signal processing device170of the image display apparatus100generates a certificate MGb and a security key based on the network address MGa of the mobile terminal600.

Meanwhile, when the network address MGa of the mobile terminal600is x.x.x.2, a plurality of network addresses in the certificate MGb may include x.x.x.1 to x.x.x.199. Next, the mobile terminal600may execute the server based on the received certificate and security key, and transmit a server address MGc of the executed server to the image display apparatus100.

In this case, the server address MGc may include the network address of the mobile terminal600, and may be https://192.168.0.2:9999/aaa/aaa as in the drawing. In this case, 9999 may represent a port.

FIG.10Aillustrates that a content corresponding to the first image840bis received from the mobile terminal600in a state in which a predetermined image820is displayed in the display180of the image display apparatus.

Referring to the drawing, when the signal processing device170of the image display apparatus100receives the sharing content through the network interface135, the signal processing device170may be configured to an object1010indicating whether to immediately display the sharing content to be displayed.

Meanwhile, when a display item1012is selected in the object1010, the signal processing device170of the image display apparatus100may be configured to a reduced predetermined image820band a sharing content image840bbto be displayed in the display180as illustrated inFIG.10B.

In this case, the first image840bmay be displayed in the display680of the mobile terminal600as it is.

Meanwhile, when the display item1012is selected in the object1010, the signal processing device170of the image display apparatus100may be configured to a predetermined image820to disappear and a sharing content image840bcto be displayed in the display180as illustrated inFIG.10C, unlikeFIG.10B. Accordingly, the sharing content may be conveniently displayed in the image display apparatus100.

In this case, the first image840bmay be displayed in the display680of the mobile terminal600as it is as illustrated inFIG.10C.

Meanwhile, when a display item1014is selected in the object1010ofFIG.10Aafterwards, the signal processing device170of the image display apparatus100may be configured to the predetermined image820, and an object1020representing a display afterwards to be displayed as illustrated in FIG. 10D.

FIGS.10Ato 10D illustrate that the first image840bis displayed in the display680of the mobile terminal600as it is. In particular,FIGS.10B and10Cmay be implemented in a similar scheme to mirroring when a content corresponding to the first image840bis displayed in the image display apparatus while the first image840bis displayed in the display680of the mobile terminal600.

Meanwhile, unlikeFIGS.10Ato 10D, in one embodiment of the present disclosure, since the server is executed when executing the sharing application for content sharing, it is also possible to display another image in the display680of the mobile terminal600. This will be described with reference toFIGS.11Ato 11D.

FIG.11Aillustrates that a content corresponding to the first image840bis received from the mobile terminal600in a state in which a predetermined image820is displayed in the display180of the image display apparatus.

Referring to the drawing, when the signal processing device170of the image display apparatus100receives the sharing content through the network interface135, the signal processing device170may be configured to an object1010indicating whether to immediately display the sharing content to be displayed.

In this case, a home screen1110other than the first image840bmay be displayed in the display680of the mobile terminal600.

Meanwhile, when the display item1012is selected in the object1010, the signal processing device170of the image display apparatus100may be configured to the reduced predetermined image820band the sharing content image840bbto be displayed in the display180as illustrated inFIG.11B.

In this case, the home screen1110other than the first image840bmay be displayed in the display680of the mobile terminal600.

Meanwhile, when the display item1012is selected in the object1010, the signal processing device170of the image display apparatus100may be configured to the predetermined image820to be disappeared and a sharing content image840ccto be displayed in the display180as illustrated inFIG.11C, unlikeFIG.11B. Accordingly, the sharing content may be conveniently displayed in the image display apparatus100.

In this case, the home screen1110other than the first image840bmay be displayed in the display680of the mobile terminal600as illustrated inFIG.11C.

Meanwhile, when the display item1014is selected in the object1010ofFIG.11Aafterwards, the signal processing device170of the image display apparatus100may be configured to the predetermined image820, and an object1020representing the display afterwards to be displayed in the display180as illustrated in FIG. 11D.

In this case, the home screen1110other than the first image840bmay be displayed in the display680of the mobile terminal600.

As illustrated inFIGS.11Ato 11D, since the server for content sharing is executed in the mobile terminal600, the mobile terminal600has an advantage of being capable of another screen while transmitting the sharing content.

FIG.12is a flowchart illustrating an example of an operation method of an image display apparatus according to another embodiment of the present disclosure.

Referring to the drawing, the operation method ofFIG.12is similar to the operation method ofFIG.6. That is, in the operation method ofFIG.12, steps S610to S640are the same as the steps ofFIG.6, however, both operation methods are different in that steps after step S651are further executed.

Accordingly, the description of steps610to S640is omitted by referring to the description ofFIG.6.

The network interface135in the image display apparatus100according to one embodiment of the present disclosure may receive a second connection request from the mobile terminal600after the wireless access to the mobile terminal600is terminated after step S640(S651).

In addition, the network interface135in the image display apparatus100receives a second network address of the mobile terminal600(S613).

Next, the signal processing device170in the image display apparatus100judges whether the received second network address is included in the plurality of network addresses in the certificate generated in step S615(S654).

For example, the second network address of the mobile terminal600may be 192.168.0.4, and the plurality of network addresses may be 192.168.0.1 to 192.168.0.199.

In the corresponding case, the signal processing device170in the image display apparatus100may be configured to transmit the pre-generated certificate and security key to the mobile terminal600. That is, the signal process device170may be configured to step S620to be performed.

Meanwhile, unlike the drawing, when the received second network address is included in the plurality of network addresses in the certificate generated in step S615, the signal processing device170in the image display apparatus100accesses the server of the mobile terminal600based on the server address of the server without additional transmission of the certificate and the security key to the mobile terminal600to receive a content from the mobile terminal600. Accordingly, the certificate may be conveniently dynamically generated when the second network address is received.

Meanwhile, when the received second network address is not included in the plurality of network addresses in the certificate generated in step S615, the signal processing device170in the image display apparatus100may generate a second certificate and a second security key based on the network address of the mobile terminal600, and transmit the generated second certificate and second security key to the mobile terminal (S660).

For example, the second network address of the mobile terminal600may be 192.170.1.4, and the plurality of network addresses in the pre-generated certificate may be 192.168.0.1 to 192.168.0.199.

Meanwhile, the signal processing device170in the image display apparatus100may generate the second certificate including the plurality of network addresses including the second network address of the mobile terminal600when generating the second certificate.

Specifically, the signal processing device170in the image display apparatus100may generate the second certificate including the plurality of network addresses by specifying the plurality of network addresses to subject alt name in the second certificate. Accordingly, the second certificate different from the existing generated certificate may be dynamically generated when the second network address is received.

For example, the signal processing device170in the image display apparatus100may generate a second certificate including a plurality of network addresses including 92.170.1.1 to 92.170.1.199 including 192.170.1.4 when the network address of the mobile terminal600is 192.170.1.4.

As such, the plurality of network addresses is included in the second certificate, so even though the second network address of the mobile terminal600is thereafter varied within a similar range, the certificate may not be separately generated, so efficient certificate management may be performed.

Meanwhile, the mobile terminal600executes a second server for sharing the content by using the second certificate and the second security key generated by the image display apparatus100.

As such, since the mobile terminal600and the image display apparatus100exchange respective information to execute the second server, the certificate may be dynamically generated. Accordingly, the security may be strengthened between the mobile terminal600and the image display apparatus100.

In this case, the second server may include the hypertext transfer protocol secure server. As such, the mobile terminal600executes the HTTPS server to strengthen the security when sharing the content.

The mobile terminal600transmits a second server address of the second server to the image display apparatus100after executing the second server.

In response thereto, the image display apparatus100receives the second server address of the second server for sharing the content from the mobile terminal600(S666).

Meanwhile, the second server address may include a second network address of the mobile terminal600.

For example, when the second network address of the mobile terminal600is 192.170.1.4, the server address may be https://192.170.1.4:8888/bbb/bbb. In this case, 8888 may represent the port.

Next, the signal processing device170in the image display apparatus100is configured to access the mobile terminal600through the received second server address through the network interface135(S670).

In addition, the signal processing device170in the image display apparatus100receives a second content through the network interface135(S676).

In this case, the second content may include an image, a moving picture, a text, an application, or an audio file.

Next, the signal processing device170in the image display apparatus100may be configured to display the received second content (S680). Accordingly, the content may be conveniently shared between the image display apparatus100and the mobile terminal600.

Meanwhile, it is also possible to perform step S651to S680by receiving the second connection request from the second mobile terminal600other than the mobile terminal600. This will be described below with reference toFIG.13B.

FIGS.13A to15are diagrams referred to for description of the operation method of

FIG.13Aillustrates that steps S610to S680ofFIG.12are performed between the image display apparatus100and the same mobile terminal600.

FIG.13Billustrates that among steps S610to S680ofFIG.12, steps S610to S640are performed between the image display apparatus100and the mobile terminal600, and step S651to S680are performed between the image display apparatus100and a second mobile terminal600b.

The network interface135in the image display apparatus100according to one embodiment of the present disclosure may receive a second connection request from the second mobile terminal600bafter the wireless access to the mobile terminal600is terminated after step S640ofFIG.12(S651).

In addition, the network interface135in the image display apparatus100may receive a second network address of the second mobile terminal600b(S613).

Next, the signal processing device170in the image display apparatus100judges whether the received second network address is included in the plurality of network addresses in the certificate generated in step S615(S654).

For example, the second network address of the second mobile terminal600bmay be 192.168.0.4, and the plurality of network addresses may be 192.168.0.1 to 192.168.0.199.

In the corresponding case, the signal processing device170in the image display apparatus100may be configured to transmit the pre-generated certificate and security key to the second mobile terminal600b. That is, the signal process device170may be configured to step S620to be performed.

Meanwhile, when the received second network address is not included in the plurality of network addresses in the certificate generated in step S615, the signal processing device170in the image display apparatus100may generate a second certificate and a second security key based on the network address of the second mobile terminal600b, and transmit the generated second certificate and second security key to the mobile terminal (S660).

For example, the second network address of the second mobile terminal600bmay be 192.170.1.4, and the plurality of network addresses in the pre-generated certificate may be 192.168.0.1 to 192.168.0.199.

Meanwhile, the signal processing device170in the image display apparatus100may generate the second certificate including the plurality of network addresses including the second network address of the second mobile terminal600bwhen generating the second certificate.

Specifically, the signal processing device170in the image display apparatus100may generate the second certificate including the plurality of network addresses by specifying the plurality of network addresses to subject alt name in the second certificate. Accordingly, the second certificate different from the existing generated certificate may be dynamically generated when the second network address is received.

For example, the signal processing device170in the image display apparatus100may generate a second certificate including a plurality of network addresses including 92.170.1.1 to 92.170.1.199 including 192.170.1.4 when the network address of the second mobile terminal600bis 192.170.1.4.

As such, the plurality of network addresses is included in the second certificate, so even though the second network address of the second mobile terminal600bis thereafter varied within a similar range, the certificate may not be separately generated, so efficient certificate management may be performed.

Meanwhile, unlike the drawing, when the second network address of the second mobile terminal600bis received, it is also possible to generate the second certificate and the security key immediately without performing step S654.

Meanwhile, the second mobile terminal600bexecutes a second server for sharing the contents by using the second certificate and the second security key generated by the image display apparatus100.

As such, since the second mobile terminal600band the image display apparatus100exchange respective information to execute the second server, the certificate may be dynamically generated. Accordingly, the security may be strengthened between the second mobile terminal600band the image display apparatus100.

In this case, the second server may include the hypertext transfer protocol secure server. As such, the second mobile terminal600bexecutes the HTTPS server to strengthen the security when sharing the content.

The second mobile terminal600btransmits a second server address of the second server to the image display apparatus100after executing the second server.

In response thereto, the image display apparatus100receives the second server address of the second server for sharing the contents from the second mobile terminal600b(S666).

Meanwhile, the second server address may include the second network address of the second mobile terminal600b.

For example, when the second network address of the second mobile terminal600bis 192.170.1.4, the server address may be https://192.170.1.4:8888/bbb/bbb. In this case, 8888 may represent the port.

Next, the signal processing device170in the image display apparatus100is configured to access the second mobile terminal600bthrough the received second server address through the network interface135(S670).

In addition, the signal processing device170in the image display apparatus100receives a second content through the network interface135(S676).

In this case, the second content may include an image, a moving picture, a text, an application, or an audio file.

Next, the signal processing device170in the image display apparatus100may be configured to display the received second content (S680). Accordingly, the content may be conveniently shared between the image display apparatus100and the second mobile terminal600b.

FIG.14Ais a diagram illustrating various examples of a signal between the mobile terminal600and the image display apparatus100.

Referring to the drawing, a network address MGa of the mobile terminal600received in step S613ofFIG.12may be exemplified as x.x.x.2 as in the drawing.

The signal processing device170of the image display apparatus100generates a certificate MGb and a security key based on the network address MGa of the mobile terminal600.

Meanwhile, when the network address MGa of the mobile terminal600is x.x.x.2, a plurality of network addresses in the certificate MGb may include x.x.x.1 to x.x.x.199.

Next, the mobile terminal600may execute the server based on the received certificate and security key, and transmit a server address MGc of the executed server to the image display apparatus100.

In this case, the server address MGc may include the network address of the mobile terminal600, and may be https://192.168.0.2:9999/aaa/aaa as in the drawing. In this case, 9999 may represent the port.

FIG.14Bis a diagram illustrating various examples of a signal between the mobile terminal600and the image display apparatus100.

Referring to the drawing, a second network address MG1of the mobile terminal600received in step S653ofFIG.12may be exemplified as y.y.y.4 as in the drawing.

The signal processing device170of the image display apparatus100generates a certificate MG2and a security key based on the second network address MG1of the mobile terminal600.

Meanwhile, when the second network address MG1of the mobile terminal600is y.y.y.4, a plurality of network addresses in the certificate MGb may include y.y.y.1 to y.y.y.199.

Next, the mobile terminal600may execute the second server based on the received second certificate and security key, and transmit a second server address MG3of the executed second server to the image display apparatus100.

In this case, the second server address MG3may include the second network address MG1of the mobile terminal600, and may be https://192.170.1.4:8888/bbb/bbb as in the drawing. In this case, 888 may represent the port.

Meanwhile, the network interface135in the image display apparatus100may receive, after transmitting the generated second certificate and second security key, the second server address of the second server executed by the mobile terminal600, access the server of the mobile terminal600based on the second server address, and receive a second content from the mobile terminal600.

FIG.14Cis a diagram illustrating sharing a second content between the image display apparatus100and the mobile terminal600.

Referring to the drawing, as illustrated inFIG.10C, after a first sharing content image840bcis displayed in the display180, the mobile terminal600shares the second content to control a second sharing content image1440bcto be displayed in the display180.

Meanwhile, when a sharing item of the second content displayed in the display180is selected or when the sharing application is executed, the controller670of the mobile terminal600may be configured to, after executing the server, transmit a second connection request and a second network address to the image display apparatus100, receive a second certificate and a second security key received from the image display apparatus100, and execute a second server for sharing the second content.

Meanwhile, the controller670may be configured to, after executing the server, transmit the second connection request and the second network address to the image display apparatus100when the sharing item of the second content displayed in the display180is selected or when the sharing application is executed, and execute the second server for sharing the second content again when the certificate and the security key are received from the image display apparatus100again or the certificate and the security key are not received for a predetermined time.

Meanwhile, the controller670of the mobile terminal600may be configured to transmit the displayed second image1440bto the image display apparatus100as the second server is executed.

In response thereto, the signal processing device170of the image display apparatus100may be configured to the received second sharing content image1440bcto be displayed in the display180.

FIG.15Aillustrates that the first content is shared between the mobile terminal600and the image display apparatus100at a first time T1.

That is, the sharing may correspond to step S610to S640ofFIG.12.

FIG.15Billustrates that the second content is shared between the mobile terminal600and the image display apparatus100at a second time T2at the first time T1.

That is, the sharing may correspond to steps S640to S680. Accordingly, the second content may be conveniently shared between the image display apparatus100and the mobile terminal600based on the dynamically generated second certificate.

Although preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, various modifications can be made by those skilled in the art to which the invention pertains without departing from the gist of the present disclosure claimed in claims, and these modified embodiments should not be individually understood from the technical idea or perspective of the present disclosure.