ARTIFICIAL INTELLIGENCE DEVICE FOR SHARING CONTENT BETWEEN PLURALITY OF DISPLAY DEVICES, AND CONTENT SHARING METHOD

Disclosed is a display device comprising: a communication interface for receiving first content information about first content being played back in the display device, and first content provider information; and a processor. The processor is for: generating a first cast message including the first content information and the first content provider information; setting a content casting application, to which the first cast message is to be delivered, to the multipurpose Internet mail extensions (MIME) type of the first cast message; and transmitting the first cast message to another artificial intelligence device through a social network application.

TECHNICAL FIELD

The present disclosure relates to a content sharing system that enables content to be shared between a plurality of display devices, and an artificial intelligence device and a content sharing method therefor.

BACKGROUND ART

A display device is a device having a function of receiving, processing, and displaying an image which a user is able to watch. The display device receives, for example, a broadcast signal selected by the user among broadcast signals transmitted from a broadcasting station, separates an image signal from the received signal, and displays the separated image signal on a display.

Meanwhile, with the development of social networks, the frequency with which various people communicate with each other is increasing. Additionally, the number of services that provide content has exploded recently, and the number of services that allow users in different spaces to share the content they are watching is increasing.

However, there are many cumbersome and inconvenient issues with the way users share content they are watching on a display device to users in different spaces.

DISCLOSURE OF INVENTION

Technical Problem

The present disclosure provides a content sharing system and an artificial intelligence device that enable content information being played back on a display device and content provider information to be easily shared with other people through a social network application.

The present disclosure provides a content sharing system and an artificial intelligence device that enable content information to be shared such that content identical to content being played back on a first display device is viewed on another second display device.

Technical Solution

According to an embodiment of the present disclosure, an artificial intelligence device includes a communication interface configured to receive first content information and first content provider information about first content being played back in a display device, and a processor configured to generate a first cast message including the first content information and the first content provider information, set a content casting application, to which the first cast message is to be transferred, to a multipurpose Internet mail extensions (MIME) type of the first cast message, and transmit the first cast message to another artificial intelligence device through a social network application.

According to an embodiment, the first content provider information may include Uniform Resource Identifier (URI) information of a content provider application of a first content provider.

According to an embodiment, the first cast message may include the URI information of the content provider application included in the first content provider information in a body portion of the first cast message.

According to an embodiment, the MIME type may include information about a content casting-only application to which the first cast message is to be transferred.

According to an embodiment, the artificial intelligence device may include a processor configured to provide a user interface for selecting the social network application to be used to transmit the first cast message using a share sheet functionality provided in a predetermined operating system.

According to an embodiment, the artificial intelligence device may include a communication interface configured to receive a second cast message from the another artificial intelligence device via the social network application.

According to an embodiment, the artificial intelligence device may include a processor configured to obtain a user input for the second cast message from the social network application, execute the content casting application specified in a MIME type of the second cast message in response to the user input, transfer the second cast message to the content casting application, and transmit second content information and second content provider information included in the second cast message to the display device via the content casting application.

Advantageous Effects

The content sharing system and the artificial intelligence device according to an embodiment of the present disclosure enable content information and content provider information being played back on a display device to be easily shared with other people through a social network application.

The content sharing system and the artificial intelligence device according to an embodiment of the present disclosure enable content information to be shared such that content identical to content being played back on a first display device is viewed on another second display device.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The suffixes “module” and “unit or portion” for components used in the following description are merely provided only for facilitation of preparing this specification, and thus they are not granted a specific meaning or function.

FIG.1is a block diagram illustrating a configuration of a display device according to an embodiment of the present disclosure.

Referring toFIG.1, a display device100may include a broadcast receiver130, an external device interface135, a memory140, a user input interface150, a controller170, a wireless communication interface173, a microphone175, a display180, a speaker185, and a power supply circuit190.

The broadcast receiver130may include a tuner131, a demodulator132, and a network interface133.

The tuner131may select a specific broadcast channel according to a channel selection command. The tuner131may receive a broadcast signal for the selected specific broadcast channel.

The demodulator132may separate the received broadcast signal into an image signal, an audio signal, and a data signal related to a broadcast program, and restore the separated image signal, auditory signal, and data signal to a format capable of being output.

The network interface133may provide an interface for connecting the display device100to a wired/wireless network including an Internet network. The network interface133may transmit or receive data to or from other users or other electronic devices through a connected network or another network linked to the connected network.

The network interface133may access a predetermined web page through the connected network or the other network linked to the connected network. That is, the network interface133may transmit or receive data to or from a corresponding server by accessing a predetermined webpage through the network.

In addition, the network interface133may receive content or data provided by a content provider or a network operator. That is, the network interface133may receive content such as movies, advertisements, games, VOD, and broadcast signals and information related thereto provided from a content provider or a network provider through a network.

In addition, the network interface133may receive update information and update files of firmware provided by the network operator, and may transmit data to an Internet or content provider or a network operator.

The network interface133may select and receive a desired application from among applications that are open to the public through a network.

The external device interface135may receive an application or a list of applications in an external device adjacent thereto, and transmit the same to the controller170or the memory140.

The external device interface135may provide a connection path between the display device100and an external device. The external device interface135may receive one or more of images and audio output from an external device connected to the display device100in a wired or wireless manner, and transmit the same to the controller170. The external device interface135may include a plurality of external input terminals. The plurality of external input terminals may include an RGB terminal, one or more High Definition Multimedia Interface (HDMI) terminals, and a component terminal.

The image signal of the external device input through the external device interface135may be output through the display180. The audio signal of the external device input through the external device interface135may be output through the speaker185.

The external device connectable to the external device interface135may be any one of a set-top box, a Blu-ray player, a DVD player, a game machine, a sound bar, a smartphone, a PC, a USB memory, and a home theater, but this is only an example.

In addition, a part of content data stored in the display device100may be transmitted to a selected user among a selected user or a selected electronic device among other users or other electronic devices registered in advance in the display device100.

The memory140may store programs for signal processing and control of the controller170, and may store images, audio, or data signals, which have been subjected to signal-processed.

In addition, the memory140may perform a function for temporarily storing images, audio, or data signals input from an external device interface135or the network interface133, and store information on a predetermined image through a channel storage function.

The memory140may store an application or a list of applications input from the external device interface135or the network interface133.

The display device100may play back a content file (a moving image file, a still image file, a music file, a document file, an application file, or the like) stored in the memory140and provide the same to the user.

The user input interface150may transmit a signal input by the user to the controller170or a signal from the controller170to the user. For example, the user input interface150may receive and process a control signal such as power on/off, channel selection, screen settings, and the like from the remote control device200in accordance with various communication methods, such as a Bluetooth communication method, a WB (Ultra Wideband) communication method, a ZigBee communication method, an RF (Radio Frequency) communication method, or an infrared (IR) communication method or may perform processing to transmit the control signal from the controller170to the remote control device200.

In addition, the user input interface150may transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a setting value to the controller170.

The image signal image-processed by the controller170may be input to the display180and displayed as an image corresponding to a corresponding image signal. Also, the image signal image-processed by the controller170may be input to an external output device through the external device interface135.

The audio signal processed by the controller170may be output to the speaker185. Also, the audio signal processed by the controller170may be input to the external output device through the external device interface135.

In addition, the controller170may control the overall operation of the display device100.

In addition, the controller170may control the display device100by a user command input through the user input interface150or an internal program and connect to a network to download an application a list of applications or applications desired by the user to the display device100.

The controller170may allow the channel information or the like selected by the user to be output through the display180or the speaker185along with the processed image or audio signal.

In addition, the controller170may output an image signal or an audio signal through the display180or the speaker185, according to a command for playing back an image of an external device through the user input interface150, the image signal or the audio signal being input from an external device, for example, a camera or a camcorder, through the external device interface135.

Meanwhile, the controller170may allow the display180to display an image, for example, allow a broadcast image which is input through the tuner131or an external input image which is input through the external device interface135, an image which is input through the network interface or an image which is stored in the memory140to be displayed on the display180. In this case, an image being displayed on the display180may be a still image or a moving image, and may be a 2D image or a 3D image.

In addition, the controller170may allow content stored in the display device100, received broadcast content, or external input content input from the outside to be played back, and the content may have various forms such as a broadcast video, an external input video, an audio file, still images, accessed web screens, and document files.

The wireless communication interface173may communicate with an external device through wired or wireless communication. The wireless communication interface173may perform short range communication with an external device. To this end, the wireless communication interface173may support short range communication using at least one of Bluetooth™, Bluetooth Low Energy (BLE), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies. The wireless communication interface173may support wireless communication between the display device100and a wireless communication system, between the display device100and another display device100, or between the display device100and a network in which the display device100(or an external server) is located through wireless area networks. The wireless area networks may be wireless personal area networks.

Here, the another display device100may be a wearable device (e.g., a smartwatch, smart glasses or a head mounted display (HMD), a mobile terminal such as a smart phone, which is able to exchange data (or interwork) with the display device100according to the present disclosure. The wireless communication interface173may detect (or recognize) a wearable device capable of communication around the display device100. Furthermore, when the detected wearable device is an authenticated device to communicate with the display device100according to the present disclosure, the controller170may transmit at least a portion of data processed by the display device100to the wearable device through the wireless communication interface173. Therefore, a user of the wearable device may use data processed by the display device100through the wearable device.

The microphone175may obtain an audio. The microphone175may include at least one microphone (not shown) and may acquire audio around the display device100through the microphone (not shown).

The display180may convert image signals, data signals, and OSD signals processed by the controller170, or image signals or data signals received from the external device interface135into R, G, and B signals, and generate drive signals.

Furthermore, the display device100shown inFIG.1is just one embodiment of the present disclosure and thus, some of the illustrated components may be integrated, added, or omitted depending on the specification of the display device100that is actually implemented.

That is, two or more components may be combined into one component, or one component may be divided into two or more components as necessary. In addition, a function performed in each block is for describing an embodiment of the present disclosure, and its specific operation or device does not limit the scope of the present disclosure.

According to another embodiment of the present disclosure, unlike the display device100shown inFIG.1, the display device100may receive an image through the network interface133or the external device interface135without a tuner131and a demodulator132and play back the same.

For example, the display device100may be divided into an image processing device, such as a set-top box, for receiving broadcast signals or content according to various network services, and a content playback device that plays content input from the image processing device.

In this case, an operation method of the display device according to an embodiment of the present disclosure will be described below may be implemented by not only the display device100as described with reference toFIG.1and but also one of an image processing device such as the separated set-top box and a content playback device including the display180and the speaker185.

The speaker185may receive a signal audio-processed by the controller170and output the same with audio.

The power supply circuit190may supply corresponding power to the display device100. Particularly, power may be supplied to the controller170that may be implemented in the form of a system on chip (SOC), the display180for image display, and the speaker85for audio output.

Specifically, the power supply circuit190may include a converter that converts AC power into DC power, and a dc/dc converter that converts a level of DC power.

Then, referring toFIGS.2and3, a remote control device is described according to an embodiment of the present disclosure.

FIG.2is a block diagram of a remote control device according to an embodiment of the present disclosure, andFIG.3shows an actual configuration example of a remote control device according to an embodiment of the present disclosure.

First, referring toFIG.2, the remote control device200may include a fingerprint reader210, a wireless communication circuit220, a user input interface230, a sensor240, an output interface250, a power supply circuit260, a memory270, a controller280, and a microphone290.

Referring toFIG.2, the wireless communication circuit220may transmit and receive signals to and from any one of display devices according to embodiments of the present disclosure described above.

The remote control device200may include an RF circuit221capable of transmitting and receiving signals to and from the display device100according to the RF communication standard, and an IR circuit223capable of transmitting and receiving signals to and from the display device100according to the IR communication standard. In addition, the remote control device200may include a Bluetooth circuit225capable of transmitting and receiving signals to and from the display device100according to the Bluetooth communication standard. In addition, the remote control device200may include an NFC circuit227capable of transmitting and receiving signals to and from the display device100according to the NFC (near field communication) communication standard, and a WLAN circuit229capable of transmitting and receiving signals to and from the display device100according to the wireless LAN (WLAN) communication standard.

In addition, the remote control device200may transmit a signal containing information on the movement of the remote control device200to the display device100through the wireless communication circuit220.

In addition, the remote control device200may receive a signal transmitted by the display device100through the RF circuit221, and transmit a command regarding power on/off, channel change, volume adjustment, or the like to the display device100through the IR circuit223as necessary.

The user input interface230may include a keypad, a button, a touch pad, a touch screen, or the like. The user may input a command related to the display device100to the remote control device200by operating the user input interface230. When the user input interface230includes a hard key button, the user may input a command related to the display device100to the remote control device200through a push operation of the hard key button. Details will be described with reference toFIG.3.

Referring toFIG.3, the remote control device200may include a plurality of buttons. The plurality of buttons may include a fingerprint recognition button212, a power button231, a home button232, a live button233, an external input button234, a volume control button235, a voice recognition button236, a channel change button237, an OK button238, and a back-play button239.

The fingerprint recognition button212may be a button for recognizing a user's fingerprint. In one embodiment, the fingerprint recognition button212may enable a push operation, and thus may receive a push operation and a fingerprint recognition operation. The power button231may be a button for turning on/off the power of the display device100. The home button232may be a button for moving to the home screen of the display device100. The live button233may be a button for displaying a real-time broadcast program. The external input button234may be a button for receiving an external input connected to the display device100. The volume control button235may be a button for adjusting the level of the volume output by the display device100. The voice recognition button236may be a button for receiving a user's voice and recognizing the received voice. The channel change button237may be a button for receiving a broadcast signal of a specific broadcast channel. The OK button238may be a button for selecting a specific function, and the back-play button239may be a button for returning to a previous screen.

A description will be given referring again toFIG.2.

When the user input interface230includes a touch screen, the user may input a command related to the display device100to the remote control device200by touching a soft key of the touch screen. In addition, the user input interface230may include various types of input means that may be operated by a user, such as a scroll key or a jog key, and the present embodiment does not limit the scope of the present disclosure.

The sensor240may include a gyro sensor241or an acceleration sensor243, and the gyro sensor241may sense information regarding the movement of the remote control device200.

For example, the gyro sensor241may sense information about the operation of the remote control device200based on the x, y, and z axes, and the acceleration sensor243may sense information about the moving speed of the remote control device200. Meanwhile, the remote control device200may further include a distance measuring sensor to sense the distance between the display device100and the display180.

The output interface250may output an image or audio signal corresponding to the operation of the user input interface230or a signal transmitted from the display device100. The user may recognize whether the user input interface230is operated or whether the display device100is controlled through the output interface250.

For example, the output interface450may include an LED251that emits light, a vibrator253that generates vibration, a speaker255that outputs sound, or a display257that outputs an image when the user input interface230is operated or a signal is transmitted and received to and from the display device100through the wireless communication interface220.

In addition, the power supply circuit260may supply power to the remote control device200, and stop power supply when the remote control device200has not moved for a predetermined time to reduce power consumption. The power supply circuit260may restart power supply when a predetermined key provided in the remote control device200is operated.

The memory270may store various types of programs and application data required for control or operation of the remote control device200. When the remote control device200transmits and receives signals wirelessly through the display device100and the RF circuit221, the remote control device200and the display device100transmit and receive signals through a predetermined frequency band.

The controller280of the remote control device200may store and refer to information on a frequency band capable of wirelessly transmitting and receiving signals to and from the display device100paired with the remote control device200in the memory270.

The controller280may control all matters related to the control of the remote control device200. The controller280may transmit a signal corresponding to a predetermined key operation of the user input interface230or a signal corresponding to the movement of the remote control device200sensed by the sensor240through the wireless communication interface220.

Also, the microphone290of the remote control device200may obtain a voice.

The microphone290may include at least one microphone291and obtain speech through the microphone291.

Next, a description will be given referring toFIG.4.

FIG.4shows an example of using a remote control device according to an embodiment of the present disclosure.

InFIG.4, (a) illustrates that a pointer205corresponding to the remote control device200is displayed on the display180.

The user may move or rotate the remote control device200up, down, left and right. The pointer205displayed on the display180of the display device100may correspond to the movement of the remote control device200. As shown in the drawings, the pointer205is moved and displayed according to movement of the remote control device200in a 3D space, so the remote control device200may be called a space remote control device.

In (b) ofFIG.4, it is illustrated that that when the user moves the remote control device200to the left, the pointer205displayed on the display180of the display device100moves to the left correspondingly.

Information on the movement of the remote control device200detected through a sensor of the remote control device200is transmitted to the display device100. The display device100may calculate the coordinates of the pointer205based on information on the movement of the remote control device200. The display device100may display the pointer205to correspond to the calculated coordinates.

In (c) ofFIG.4A, it is illustrated that a user moves the remote control device200away from the display180while pressing a specific button in the remote control device200. Accordingly, a selected area in the display180corresponding to the pointer205may be zoomed in and displayed enlarged.

Conversely, when the user moves the remote control device200to be close to the display180, the selected area in the display180corresponding to the pointer205may be zoomed out and displayed reduced.

On the other hand, when the remote control device200moves away from the display180, the selected area may be zoomed out, and when the remote control device200moves to be close to the display180, the selected area may be zoomed in.

Also, in a state in which a specific button in the remote control device200is being pressed, recognition of up, down, left, or right movements may be excluded. That is, when the remote control device200moves away from or close to the display180, the up, down, left, or right movements are not recognized, and only the forward and backward movements may be recognized. In a state in which a specific button in the remote control device200is not being pressed, only the pointer205moves according to the up, down, left, or right movements of the remote control device200.

Meanwhile, the movement speed or the movement direction of the pointer205may correspond to the movement speed or the movement direction of the remote control device200.

Meanwhile, in the present specification, a pointer refers to an object displayed on the display180in response to an operation of the remote control device200. Accordingly, objects of various shapes other than the arrow shape shown in the drawings are possible as the pointer205. For example, the object may be a concept including a dot, a cursor, a prompt, a thick outline, and the like. In addition, the pointer205may be displayed corresponding to any one point among points on a horizontal axis and a vertical axis on the display180, and may also be displayed corresponding to a plurality of points such as a line and a surface.

FIG.5illustrates an AI device300according to an embodiment of the present disclosure.

Referring toFIG.5, the AI device300may include a communication interface310, an input interface320, a learning processor330, a sensor340, an output interface350, a memory370, and a processor380.

The communication interface310may transmit/receive data to and from another AI device or external devices using wired/wireless communication technologies. For example, the communication interface310may transmit and receive sensor information, a user input, a learning model, and a control signal to and from external devices.

The communication technology used by the communication interface310includes GSM (Global System for Mobile communication), CDMA (Code Division Multi Access), LTE (Long Term Evolution), 5G, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Bluetooth™, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), ZigBee, NFC (Near Field Communication), and the like.

The input interface320may acquire various kinds of data.

In this case, the input interface320may include a camera for inputting a video signal, a microphone for receiving an audio signal, and a user input interface for receiving information from a user. The camera or the microphone may be treated as a sensor, and the signal acquired from the camera or the microphone may be referred to as sensing data or sensor information.

The input interface320may acquire a learning data for model learning and an input data to be used when an output is acquired by using learning model. The input interface320may acquire raw input data. In this case, the processor380or the learning processor330may extract an input feature by preprocessing the input data.

The learning processor330may train a model composed of an artificial neural network by using learning data. The learned artificial neural network may be referred to as a learning model. The learning model may be used to an infer result value for new input data rather than learning data, and the inferred value may be used as a basis for determination to perform a certain operation.

In this case, the learning processor330may include a memory integrated or implemented in the AI device300. Alternatively, the learning processor330may be implemented by using the memory370, an external memory directly connected to the AI device300, or a memory held in an external device.

The sensor340may acquire at least one of internal information about the AI device300, ambient environment information about the AI device300, and user information by using various sensors.

Examples of the sensors included in the sensor340may include a proximity sensor, an illuminance sensor, an acceleration sensor, a magnetic sensor, a gyro sensor, an inertial sensor, an RGB sensor, an IR sensor, a fingerprint recognition sensor, an ultrasonic sensor, an optical sensor, a microphone, a lidar, and a radar.

The output interface350may generate an output related to a visual sense, an audio sense, or a haptic sense.

In this case, the output interface350may include a display for outputting time information, a speaker for outputting audio information, and a haptic module for outputting haptic information.

The memory370may store data that supports various functions of the AI device300. For example, the memory370may store input data acquired by the input interface320, learning data, a learning model, a learning history, and the like.

The processor380may determine at least one executable operation of the AI device300based on information determined or generated by using a data analysis algorithm or a machine learning algorithm. The processor380may control the components of the AI device300to execute the determined operation.

To this end, the processor380may request, search, receive, or utilize data of the learning processor330or the memory370. The processor180may control the components of the AI device300to execute the predicted operation or the operation determined to be desirable among the at least one executable operation.

When the connection of an external device is required to perform the determined operation, the processor380may generate a control signal for controlling the external device and may transmit the generated control signal to the external device.

The processor380may acquire intention information for the user input and may determine the user's requirements based on the acquired intention information.

In this case, the processor380may obtain intention information corresponding to a user input using at least one of a speech to text (STT) engine for converting a voice input into a character string or a natural language processing (NLP) engine for obtaining intention information of natural language.

At least one of the STT engine or the NLP engine may be configured as an artificial neural network, at least part of which is learned according to the machine learning algorithm. Also, at least one of the STT engine or the NLP engine may be trained by the learning processor330.

The processor380may collect history information including the operation contents of the AI device300or the user's feedback on the operation and may store the collected history information in the memory370or the learning processor330or transmit the collected history information to the external device. The collected history information may be used to update the learning model.

The processor380may control at least part of the components of AI device300so as to drive an application program stored in memory370. Furthermore, the processor380may operate two or more of the components included in the AI device300in combination so as to drive the application program.

Meanwhile, the communication interface310may be referred to as the network interface310.

FIG.6is a block diagram for describing a content sharing system according to an embodiment of the present disclosure.

A content sharing system10may include a first display device100_1, a second display device100_2, a first artificial intelligence device300_1, and a second artificial intelligence device300_2.

The first display device100_1may play first content. Meanwhile, the first display device100_1and the first artificial intelligence device300_1may communicate with each other in a wired and wireless manner. The first artificial intelligence device300_1may have a content casting application installed herein, which is able to transmit and receive data with the first display device100_1. The content casting application may be installed on the artificial intelligence device300and may transmit and receive certain information with the display device100. The content casting application may request content playback by transmitting information about content from the artificial intelligence device300to the display device100. Further, the content casting application may receive information about content from the display device100to the artificial intelligence device300and obtain information about content being played back on the display device100.

Meanwhile, the first artificial intelligence device300_1may request to transmit information about the first content being played back on the first display device100_1through a content casting application. The first display device100_1may transmit information about the first content being played back to the first artificial intelligence device300_1in response to the request.

Meanwhile, the first artificial intelligence device300_1may transmit information about the received first content to the second artificial intelligence device300_2.

Meanwhile, the second artificial intelligence device300_2may transmit first content to the second display device100_2and request the second display device to play back the first content based on the content casting application received from the first artificial intelligence device300_1.

The second display device100_2may play the first content based on information about the received first content.

A method of sharing content with the second display device100_2in the first display device100_1will be described in detail below.

FIG.7is a block diagram for describing a content sharing method according to an embodiment of the present disclosure.

The processor380of the artificial intelligence device300may execute a content casting application (S701).

The content casting application may be an application that is installed on the artificial intelligence device300and is capable of transmitting and receiving certain information with the display device100.

The processor380may receive content information and content provider information regarding content being played back on the display device100from an application via the communication interface310(S702). For example, the processor380may request a content casting application to transmit the content information and content provider information regarding the content being played back on the display device100and obtain the content information and the content provider information.

The content information may be metadata information about the content being played. For example, the content information may include at least one of a content ID, a content title, and a content genre. Meanwhile, the content provider information may be information about a content provider that provides content being played back on the display device100. Additionally, the content provider information may include URI (Uniform Resource Identifier) information of a content provider application. For example, when the content provider application is executed on the display device100to play back content, the URI information of the content provider application may be included in the content provider information.

The processor380may generate a cast message based on the acquired content information and content provider information (S703).

The cast message may include the acquired content information and content provider information. The cast message may be a message used when the content casting application transmits information about content to the display device. The cast message may include the content information and the content provider information as parameter values. Also, the cast message may include a header portion and a body portion, and the URI information of the content provider application may be included in the body portion.

Meanwhile, the processor380may set the MIME (Multipurpose Internet Mail Extensions) type of the cast message to the content casting application (S704).

The processor380may set an application to receive the cast message by setting the MIME type of the cast message. By setting the content casting application as the MIME type of the cast message, the processor380may specify the content casting application as an application via which another artificial intelligence device that has received the content cast message is to transfer the cast message.

Meanwhile, the processor380may transmit a generated cast message via a social network application (S705).

The processor380may transmit a cast message to another artificial intelligence device through the communication interface310via a social network application (Social Networking Service Application).

Additionally, the processor380may provide a user interface for selecting a social network application to be used to transmit a cast message using the Share sheet function provided by the operating system.

FIG.8is a diagram for describing a content sharing method according to an embodiment of the present disclosure.

Referring toFIG.8, the processor380may activate a Share Sheet function provided by the operating system when a user inputs a selection of a function to share content with other users. Additionally, the processor380may provide a user interface800to select a social network application801to be used to transmit a cast message.

Accordingly, the processor380may transmit the cast message to other artificial intelligence devices via a social network application801selected by the user to share information about the content with other users.

FIG.9is a flowchart for describing a content sharing method according to an embodiment of the present disclosure.

The processor380of the artificial intelligence device100may receive a cast message from another artificial intelligence device via the communication interface310(S901).

For example, when the cast message is transmitted via the social network application, processor380may receive the cast message transmitted via the social network application.

Meanwhile, the processor380may obtain a user input for the received cast message (S902).

For example, the processor380may obtain a user input for the cast message received via the social network application and obtain a command for the user to execute the cast message.

Additionally, the processor380may execute a content casting application specified in the MIME type based on the MIME type of the cast message received in response to the user input (S903). For example, when another artificial intelligence device transmits a cast message, the other artificial intelligence device may specify an application that is to receive the cast message as the MIME type of the cast message.

The processor380may execute an application to receive the cast message based on the MIME type of the cast message. Accordingly, a specific application to execute the cast message may be executed.

Meanwhile, the processor380may transfer the received cast message via the content casting application (S904). The processor380may execute the content casting application while transferring the received cast message as a parameter of the content casting application.

Meanwhile, the processor380may transmit content information and content provider information included in the cast message from the content casting application to the display device100through the communication interface310(S904).

The display device100may be a device paired with the artificial intelligence device300to transmit and receive data with each other through a content casting application.

The display device100may play back content requested from the artificial intelligence device100based on the received content information and content provider information.

Accordingly, it is possible to play back shared content based on a cast message shared from another artificial intelligence device.

FIG.10is a diagram for describing a content sharing method using a content sharing system according to an embodiment of the present disclosure.

A first display device100_1may play back content (S1001). A user may want to share content being played back on the first display device100_1with other user for the other users to watch the same content. In this case, the first artificial intelligence device300_1may execute the first content casting application (S1002).

The first artificial intelligence device300_1may request content sharing from the first display device100_1(S1003). For example, the first artificial intelligence device300_1may request content sharing by requesting the first display device100_1to transfer information about the content being played.

Additionally, the first display device100_1may transmit the information about content to the first artificial intelligence device300_1(S1004). The information about content may include content information about the content being played back and content provider information.

The first artificial intelligence device300_1may receive the content information and the content provider information from the first display device100_1(S1005).

The first artificial intelligence device300_1may generate a cast message based on the content information and the content provider information (S1006).

Additionally, the first artificial intelligence device300_1may set the MIME type of the cast message (S1007). The first artificial intelligence device300_1may set an application that is to receive the cast message by setting the MIME type of the cast message. The first artificial intelligence device300_1may set the first content cast application as the MIME type of the cast message to specify a second content casting application as an application to transfer the cast message in a second artificial intelligence device100_2, which later receives the content cast message.

Meanwhile, the first artificial intelligence device300_1may transmit the cast message to the second artificial intelligence device300_2via the social network application (S1008). Accordingly, the cast message may be transmitted to the second artificial intelligence device300_2(S1009).

Meanwhile, the second artificial intelligence device300_2may receive the cast message from the first artificial intelligence device300_1via a social network application (S1010). The second artificial intelligence device300_2may obtain a user input for the received cast message (S1011).

Meanwhile, the second artificial intelligence device300_2may execute the second content casting application based on the MIME type of the received cast message (S1012). Further, the second artificial intelligence device300_2may transmit the cast message as a parameter when executing the second content casting application (S1013).

Meanwhile, the second artificial intelligence device300_2may transmit content information and content provider information included in the cast message to the second display device100_2via the second content casting application (S1013). Accordingly, the content information and the content provider information may be transmitted to the second display device100_2(S1015).

Meanwhile, the second display device100_2may play back the content being played on the first display device100_1based on the received content information and content provider information (S1016).

The above description is merely illustrative of the technical idea of the present disclosure, and various modifications and variations may be made without departing from the essential characteristics of the present disclosure by those skilled in the art to which the present disclosure pertains.

Accordingly, the embodiment disclosed in the present disclosure is not intended to limit the technical idea of the present disclosure but to describe the present disclosure, and the scope of the technical idea of the present disclosure is not limited by the embodiment.

The scope of protection of the present disclosure should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present disclosure.