Patent Description:
Digital TV services using wired or wireless communication networks are becoming common. Digital TV service can provide a variety of services that could not be provided in the conventional analog broadcasting service.

For example, IPTV (Internet Protocol Television), which is a type of digital TV service, and smart TV service provide bidirectionality that allows a user to actively select a type of viewing the program and viewing time. IPTV, smart TV service may provide a variety of additional services, such as Internet search, home shopping, and online games based on this bidirectionality.

Recently, a lot of technologies for recognizing a user's utterance and providing a voice recognition service according to the user's utterance using artificial intelligence have emerged.

In general, a display device is equipped with a plurality of artificial intelligence (AI) agents capable of providing a voice recognition service.

Conventionally, a plurality of AI agents have provided information or queries related to the program information that the user is viewing.

However, associated information or queries have been provided in a limited range that is linked to a search term previously searched by a user.

For example, if the previous search term is <weather>, information related to this only is <tomorrow is> which is a continuous query that induces the user's utterance.

In other words, in the conventional multi-AI agent service, since the provision of information linked to a previous search term is limited to a limited range, there is inconvenience in searching for various and continuous information.

Further prior art can be found in <CIT> which generally relates to an intelligent automated assistant for media search and playback.

An object of the present disclosure is to be capable of performing continuously search for a variety of information through a user's utterance.

An object of the present disclosure is to enable continuous search of information by using a search result of each AI agent if providing a voice recognition service through a multi-AI agent.

An artificial intelligence device according to an embodiment of the present disclosure may receive voice data corresponding to viewing information and a search command from a display device, convert the received voice data into text data, obtain a first query indicating intention of the converted text data, convert the first query into a second query based on the viewing information, obtain a search result corresponding to the converted second, and transmit the obtained search result to the display device.

An artificial intelligence device according to another embodiment of the present disclosure may receive voice data corresponding to information of an object and a voice command from the display device through the communication interface, convert the received voice data into text data, obtain a first query indicating the intention of the converted text data, convert the first query into a second query based on the information of an object, obtain an intention performance result corresponding to the converted second query, and transmit the obtained intention performance result to the display device.

According to various embodiments of the present disclosure, the search of various information is naturally and continuously performed, so that a user may feel an improved experience of information search.

Hereinafter, embodiments relating to the present disclosure will be described in detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the description below are assigned or mixed in consideration of easiness in writing the specification and do not have distinctive meanings or roles by themselves.

A display device according to an embodiment of the present disclosure, for example, as an artificial display device that adds a computer supporting function to a broadcast receiving function, can have an easy-to-use interface such as a writing input device, a touch screen, or a spatial remote control device as an Internet function is added while fulfilling the broadcast receiving function. Then, with the support of a wired or wireless Internet function, it is possible to perform an e-mail, web browsing, banking, or game function in access to Internet and computers. In order to perform such various functions, standardized general purpose OS can be used.

Accordingly, since various applications are freely added or deleted on a general purpose OS kernel, a display device described herein, for example, can perform various user-friendly functions. The display device, in more detail, can be a network TV, Hybrid Broadcast Broadband TV (HBBTV), smart TV, light-emitting diode (LED) TV, organic light-emitting diode (OLED) TV, and so on and in some cases, can be applied to a smartphone.

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

Referring to <FIG>, a display device <NUM> can include a broadcast reception unit <NUM>, an external device interface unit <NUM>, a storage unit <NUM>, a user interface unit <NUM>, a control unit <NUM>, a wireless communication unit <NUM>, a display unit <NUM>, an audio output unit <NUM>, and a power supply unit <NUM>.

The broadcast reception unit <NUM> can include a tuner <NUM>, a demodulation unit <NUM>, and a network interface unit <NUM>.

The tuner <NUM> can select a specific broadcast channel according to a channel selection command. The tuner <NUM> can receive broadcast signals for the selected specific broadcast channel.

The demodulation unit <NUM> can divide the received broadcast signals into video signals, audio signals, and broadcast program related data signals and restore the divided video signals, audio signals, and data signals to an output available form.

The external device interface unit <NUM> can receive an application or an application list in an adjacent external device and deliver it to the control unit <NUM> or the storage unit <NUM>.

The external device interface unit <NUM> can provide a connection path between the display device <NUM> and an external device. The external device interface unit <NUM> can receive at least one an image or audio output from an external device that is wirelessly or wiredly connected to the display device <NUM> and deliver it to the control unit <NUM>. The external device interface unit <NUM> can include a plurality of external input terminals. The plurality of external input terminals can include an RGB terminal, at least one High Definition Multimedia Interface (HDMI) terminal, and a component terminal.

An image signal of an external device input through the external device interface unit <NUM> can be output through the display unit <NUM>. A voice signal of an external device input through the external device interface unit <NUM> can be output through the audio output unit <NUM>.

An external device connectable to the external device interface unit <NUM> can be one of a set-top box, a Blu-ray player, a DVD player, a game console, a sound bar, a smartphone, a PC, a USB Memory, and a home theater system, but this is just exemplary.

The network interface unit <NUM> can provide an interface for connecting the display device <NUM> to a wired/wireless network including the Internet network. The network interface unit <NUM> can transmit or receive data to or from another user or another electronic device through an accessed network or another network linked to the accessed network.

Additionally, some content data stored in the display device <NUM> can be transmitted to a user or an electronic device, which is selected from other users or other electronic devices pre-registered in the display device <NUM>.

The network interface unit <NUM> can access a predetermined webpage through an accessed network or another network linked to the accessed network. In other words, the network interface unit <NUM> can transmit or receive data to or from a corresponding server by accessing a predetermined webpage through the network.

Then, the network interface unit <NUM> can receive contents or data provided from a content provider or a network operator. In other words, the network interface unit <NUM> can receive contents such as movies, advertisements, games, VODs, and broadcast signals, which are provided from a content provider or a network provider, through network and information relating thereto.

Additionally, the network interface unit <NUM> can receive firmware update information and update files provided from a network operator and transmit data to an Internet or content provider or a network operator.

The network interface unit <NUM> can select and receive a desired application among applications open to the air, through network.

The storage unit <NUM> can store signal-processed image, voice, or data signals stored by a program in order for each signal processing and control in the control unit <NUM>.

Additionally, the storage unit <NUM> can perform a function for temporarily storing image, voice, or data signals output from the external device interface unit <NUM> or the network interface unit <NUM> and can store information on a predetermined image through a channel memory function.

The storage unit <NUM> can store an application or an application list input from the external device interface unit <NUM> or the network interface unit <NUM>.

The display device <NUM> can play content files (for example, video files, still image files, music files, document files, application files, and so on) stored in the storage unit <NUM> and provide them to a user.

The user interface unit <NUM> can deliver signals input by a user to the control unit <NUM> or deliver signals from the control unit <NUM> to a user. For example, the user interface unit <NUM> can receive or process control signals such as power on/off, channel selection, and screen setting from the remote control device <NUM> or transmit control signals from the control unit <NUM> to the remote control device <NUM> according to various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, Radio Frequency (RF), and IR.

Additionally, the user interface unit <NUM> can deliver, to the control unit <NUM>, control signals input from local keys (not illustrated) such as a power key, a channel key, a volume key, and a setting key.

Image signals that are image-processed in the control unit <NUM> can be input to the display unit <NUM> and displayed as an image corresponding to corresponding image signals. Additionally, image signals that are image-processed in the control unit <NUM> can be input to an external output device through the external device interface unit <NUM>.

Voice signals processed in the control unit <NUM> can be output to the audio output unit <NUM>. Additionally, voice signals processed in the control unit <NUM> can be input to an external output device through the external device interface unit <NUM>.

Besides that, the control unit <NUM> can control overall operations in the display device <NUM>. Additionally, the control unit <NUM> can control the display device <NUM> by a user command or internal program input through the user interface unit <NUM> and download a desired application or application list into the display device <NUM> in access to network.

The control unit <NUM> can output channel information selected by a user together with processed image or voice signals through the display unit <NUM> or the audio output unit <NUM>.

Additionally, according to an external device image playback command received through the user interface unit <NUM>, the control unit <NUM> can output image signals or voice signals of an external device such as a camera or a camcorder, which are input through the external device interface unit <NUM>, through the display unit <NUM> or the audio output unit <NUM>.

Moreover, the control unit <NUM> can control the display unit <NUM> to display images and control broadcast images input through the tuner <NUM>, external input images input through the external device interface unit <NUM>, images input through the network interface unit, or images stored in the storage unit <NUM> to be displayed on the display unit <NUM>. In this case, an image displayed on the display unit <NUM> can be a still image or video and also can be a 2D image or a 3D image.

Additionally, the control unit <NUM> can play content stored in the display device <NUM>, received broadcast content, and external input content input from the outside, and the content can be in various formats such as broadcast images, external input images, audio files, still images, accessed web screens, and document files.

The wireless communication unit <NUM> can perform a wired or wireless communication with an external electronic device. The wireless communication unit <NUM> can perform short-range communication with an external device. For this, the wireless communication unit <NUM> can support short-range communication by using at least one of Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (USB) technologies. The wireless communication unit <NUM> can support wireless communication between the display device <NUM> and a wireless communication system, between the display device <NUM> and another display device <NUM>, or between networks including the display device <NUM> and another display device <NUM> (or an external server) through wireless area networks. The wireless area networks can be wireless personal area networks.

Herein, the other display device <NUM> can be a mobile terminal such as a wearable device (for example, a smart watch, a smart glass, and a head mounted display (HMD)) or a smartphone, which is capable of exchanging data (or inter-working) with the display device <NUM>. The wireless communication unit <NUM> can detect (or recognize) a communicable wearable device around the display device <NUM>. Furthermore, if the detected wearable device is a device authenticated to communicate with the display device <NUM>, the control unit <NUM> can transmit at least part of data processed in the display device <NUM> to the wearable device through the wireless communication unit <NUM>. Accordingly, a user of the wearable device can use the data processed in the display device <NUM> through the wearable device.

The display unit <NUM> can convert image signals, data signals, or on-screen display (OSD) signals, which are processed in the control unit <NUM>, or images signals or data signals, which are received in the external device interface unit <NUM>, into R, G, and B signals to generate driving signals.

Meanwhile, the display device <NUM> illustrated in <FIG> is just one embodiment of the present disclosure and thus, some of the components illustrated can be integrated, added, or omitted according to the specification of the actually implemented display device <NUM>.

In other words, if necessary, two or more components can be integrated into one component or one component can be divided into two or more components and configured.

According to another embodiment of the present disclosure, unlike <FIG>, the display device <NUM> can receive images through the network interface unit <NUM> or the external device interface unit <NUM> and play them without including the tuner <NUM> and the demodulation unit <NUM>.

For example, the display device <NUM> can be divided into an image processing device such as a set-top box for receiving broadcast signals or contents according to various network services and a content playback device for playing contents input from the image processing device.

In this case, an operating method of a display device according to an embodiment of the present disclosure described below can be performed by one of the display device described with reference to <FIG>, an image processing device such as the separated set-top box, and a content playback device including the display unit <NUM> and the audio output unit <NUM>.

Then, referring to <FIG> and <FIG>, a remote control device is described according to an embodiment of the present disclosure.

<FIG> is a block diagram illustrating a remote control device according to an embodiment of the present disclosure and <FIG> is a view illustrating an actual configuration of a remote control device <NUM> according to an embodiment of the present disclosure.

First, referring to <FIG>, a remote control device <NUM> can include a fingerprint recognition unit <NUM>, a wireless communication unit <NUM>, a user input unit <NUM>, a sensor unit <NUM>, an output unit <NUM>, a power supply unit <NUM>, a storage unit <NUM>, a control unit <NUM>, and a voice acquisition unit <NUM>.

Referring to <FIG>, the wireless communication unit <NUM> transmits/receives signals to/from an arbitrary any one of display devices according to the above-mentioned embodiments of the present disclosure.

The remote control device <NUM> can include a radio frequency (RF) module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the RF communication standards and an IR module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the IR communication standards. Additionally, the remote control device <NUM> can include a Bluetooth module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the Bluetooth communication standards. Additionally, the remote control device <NUM> can include a Near Field Communication (NFC) module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the NFC communication standards and a WLAN module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the Wireless LAN (WLAN) communication standards.

Additionally, the remote control device <NUM> can transmit signals containing information on a movement of the remote control device <NUM> to the display device <NUM> through the wireless communication unit <NUM>.

Moreover, the remote control device <NUM> can receive signals transmitted from the display device <NUM> through the RF module <NUM> and if necessary, can transmit a command on power on/off, channel change, and volume change to the display device <NUM> through the IR module <NUM>.

The user input unit <NUM> can be configured with a keypad button, a touch pad, or a touch screen. A user can manipulate the user input unit <NUM> to input a command relating to the display device <NUM> to the remote control device <NUM>. If the user input unit <NUM> includes a hard key button, a user can input a command relating to the display device <NUM> to the remote control device <NUM> through the push operation of the hard key button. This will be described with reference to <FIG>.

Referring to <FIG>, the remote control device <NUM> can include a plurality of buttons. The plurality of buttons can include a fingerprint recognition button <NUM>, a power button <NUM>, a home button <NUM>, a live button <NUM>, an external input button <NUM>, a voice adjustment button <NUM>, a voice recognition button <NUM>, a channel change button <NUM>, a check button <NUM>, and a back button <NUM>.

The fingerprint recognition button <NUM> can be a button for recognizing a user's fingerprint. According to an embodiment of the present disclosure, the fingerprint recognition button <NUM> can perform a push operation and receive a push operation and a fingerprint recognition operation. The power button <NUM> can be button for turning on/off the power of the display device <NUM>. The home button <NUM> can be a button for moving to the home screen of the display device <NUM>. The live button <NUM> can be a button for displaying live broadcast programs. The external input button <NUM> can be a button for receiving an external input connected to the display device <NUM>. The voice adjustment button <NUM> can be a button for adjusting the size of a volume output from the display device <NUM>. The voice recognition button <NUM> can be a button for receiving user's voice and recognizing the received voice. The channel change button <NUM> can be a button for receiving broadcast signals of a specific broadcast channel. The check button <NUM> can be a button for selecting a specific function and the back button <NUM> can be a button for returning to a previous screen.

If the user input unit <NUM> includes a touch screen, a user can touch a soft key of the touch screen to input a command relating to the display device <NUM> to the remote control device <NUM>. Additionally, the user input unit <NUM> can include various kinds of input means manipulated by a user, for example, a scroll key and a jog key.

The sensor unit <NUM> can include a gyro sensor <NUM> or an acceleration sensor <NUM> and the gyro sensor <NUM> can sense information on a movement of the remote control device <NUM>.

For example, the gyro sensor <NUM> can sense information on an operation of the remote control device <NUM> on the basis of x, y, and z axes and the acceleration sensor <NUM> can sense information on a movement speed of the remote control device <NUM>. Moreover, the remote control device <NUM> can further include a distance measurement sensor and sense a distance with respect to the display unit <NUM> of the display device <NUM>.

The output unit <NUM> can output image or voice signals corresponding to manipulation of the user input unit <NUM> or corresponding to signals transmitted from the display device <NUM>. A user can recognize whether the user input unit <NUM> is manipulated or the display device <NUM> is controlled through the output unit <NUM>.

For example, the output unit <NUM> can include an LED module <NUM> for flashing, a vibration module <NUM> for generating vibration, a sound output module <NUM> for outputting sound, or a display module <NUM> for outputting an image, if the user input unit <NUM> is manipulated or signals are transmitted/received to/from the display device <NUM> through the wireless communication unit <NUM>.

Additionally, the power supply unit <NUM> supplies power to the remote control device <NUM> and if the remote control device <NUM> does not move for a predetermined time, stops the power supply, so that power waste can be reduced. The power supply unit <NUM> can resume the power supply if a predetermined key provided at the remote control device <NUM> is manipulated.

The storage unit <NUM> can store various kinds of programs and application data necessary for control or operation of the remote control device <NUM>. If the remote control device <NUM> transmits/receives signals wirelessly through the display device <NUM> and the RF module <NUM>, the remote control device <NUM> and the display device <NUM> transmits/receives signals through a predetermined frequency band.

The control unit <NUM> of the remote control device <NUM> can store, in the storage unit <NUM>, information on a frequency band for transmitting/receiving signals to/from the display device <NUM> paired with the remote control device <NUM> and refer to it.

The control unit <NUM> controls general matters relating to control of the remote control device <NUM>. The control unit <NUM> can transmit a signal corresponding to a predetermined key manipulation of the user input unit <NUM> or a signal corresponding to movement of the remote control device <NUM> sensed by the sensor unit <NUM> to the display device <NUM> through the wireless communication unit <NUM>.

Additionally, the voice acquisition unit <NUM> of the remote control device <NUM> can obtain voice.

The voice acquisition unit <NUM> can include at least one microphone <NUM> and obtain voice through the microphone <NUM>.

<FIG> is a view of utilizing a remote control device according to an embodiment of the present disclosure.

<FIG> illustrates that a pointer <NUM> corresponding to the remote control device <NUM> is displayed on the display unit <NUM>.

A user can move or rotate the remote control device <NUM> vertically or horizontally. The pointer <NUM> displayed on the display unit <NUM> of the display device <NUM> corresponds to a movement of the remote control device <NUM>. Since the corresponding pointer <NUM> is moved and displayed according to a movement on a 3D space as show in the drawing, the remote control device <NUM> can be referred to as a spatial remote control device.

<FIG> illustrates that if a user moves the remote control device <NUM>, the pointer <NUM> displayed on the display unit <NUM> of the display device <NUM> is moved to the left according to the movement of the remote control device <NUM>.

Information on a movement of the remote control device <NUM> detected through a sensor of the remote control device <NUM> is transmitted to the display device <NUM>. The display device <NUM> can calculate the coordinates of the pointer <NUM> from the information on the movement of the remote control device <NUM>. The display device <NUM> can display the pointer <NUM> to match the calculated coordinates.

<FIG> illustrates that while a specific button in the remote control device <NUM> is pressed, a user moves the remote control device <NUM> away from the display unit <NUM>. Thus, a selection area in the display unit <NUM> corresponding to the pointer <NUM> can be zoomed in and displayed larger.

On the contrary, if the user moves the remote control device <NUM> to approach the display unit <NUM>, the selection area in the display unit <NUM> corresponding to the pointer <NUM> may be zoomed out and reduced.

On the other hand, if the remote control device <NUM> is moved away from the display unit <NUM>, a selection area can be zoomed out and if the remote control device <NUM> is moved closer to the display unit <NUM>, a selection area can be zoomed in.

Additionally, if a specific button in the remote control device <NUM> is pressed, recognition of a vertical or horizontal movement can be excluded. In other words, if the remote control device <NUM> is moved away from or closer to the display unit <NUM>, the up, down, left, or right movement cannot be recognized and only the back and forth movement can be recognized. While a specific button in the remote control device <NUM> is not pressed, only the pointer <NUM> is moved according to the up, down, left or right movement of the remote control device <NUM>.

Moreover, the moving speed or moving direction of the pointer <NUM> can correspond to the moving speed or moving direction of the remote control device <NUM>.

Furthermore, a pointer in this specification means an object displayed on the display unit <NUM> in response to an operation of the remote control device <NUM>. Accordingly, besides an arrow form displayed as the pointer <NUM> in the drawing, various forms of objects are possible. For example, the above concept includes a point, a cursor, a prompt, and a thick outline. Then, the pointer <NUM> can be displayed in correspondence to one point of a horizontal axis and a vertical axis on the display unit <NUM> and also can be displayed in correspondence to a plurality of points such as a line and a surface.

<FIG> is a block diagram illustrating a configuration of an AI server according to an embodiment of the present disclosure.

Referring to <FIG>, the Artificial Intelligence (AI) server <NUM> may refer to a device for learning artificial neural network using a machine learning algorithm or using learned artificial neural network.

Here, the AI server <NUM> may be composed of a plurality of servers to perform distributed processing or may be defined as a <NUM> network. In this case, the AI server <NUM> may be included as a portion of the display device <NUM> to perform at least some of the AI processing together.

The AI server <NUM> may include a communication unit <NUM>, a memory <NUM>, a learning processor <NUM>, a processor <NUM>, and the like.

The communication unit <NUM> may transmit/receive data with an external device such as the display device <NUM>.

The memory <NUM> may include a model storage unit <NUM>-<NUM>. The model storage unit <NUM>-<NUM> may store the training or trained model (or artificial neural network <NUM>-<NUM>) through the learning processor <NUM>.

The learning processor <NUM> may train the artificial neural network <NUM>-<NUM> using the training data. The training model may be used in a state of being mounted in the AI server <NUM> of the artificial neural network or may be mounted and used in an external device such as the display device <NUM>.

The training model can be implemented in hardware, software or a combination of hardware and software. If some or all of the training model is implemented in software, one or more instructions constituting the training model may be stored in the memory <NUM>.

The processor <NUM> may infer a result value with respect to the new input data using the training model, and generate a response or control command based on the inferred result value.

<FIG> is a view for describing the configuration of an artificial intelligence system according to another embodiment of the present disclosure.

Referring to <FIG>, the artificial intelligence system <NUM> may include a display device <NUM>, a data conversion server <NUM>, and an NLP server <NUM>.

The display device <NUM> may transmit voice data corresponding to the voice command uttered by the user to the data conversion server <NUM>.

The data conversion server <NUM> may receive voice data from the display device <NUM>. The data conversion server <NUM> may convert the received voice data into text data.

The data conversion server <NUM> may convert the result of performing the intention in the form of text received from the NLP server <NUM> into voice data in the form of audio, and transmit the converted voice data to the display device <NUM>.

The data conversion server <NUM> may transmit voice data indicating the AI agent change to the display device <NUM>.

The natural language process (NLP) server <NUM> may include a first AI agent server <NUM> and a second AI agent server <NUM>.

The NLP server <NUM> may receive text data from the data conversion server <NUM> and analyze the intention of the received text data using the natural language processing engine.

The NLP server <NUM> may include one or more AI agent servers.

For example, the NLP server <NUM> may include a first AI agent server <NUM> and a second AI agent server <NUM>.

The first AI agent server <NUM> may be a server that provides a natural language processing service through a manufacturer other than the manufacturer of the display device <NUM>.

The second AI agent server <NUM> may be a server that provides natural language processing services through the manufacturer of the display device <NUM>.

Each of the first AI agent server <NUM> and the second AI agent server <NUM> may include components of the AI server <NUM> illustrated in <FIG>.

The data conversion server <NUM> may transmit text data to the first AI agent server <NUM>.

The first AI agent server <NUM> may obtain the intention of the text data and determine whether to process an operation corresponding to the obtained intention.

If it is determined that the first AI agent server <NUM> can process an operation corresponding to the obtained intention, the first AI agent server <NUM> may obtain an intention analysis result corresponding to the intention.

If it is determined that the first AI agent server <NUM> cannot process an operation corresponding to the obtained intention, the first AI agent server <NUM> may transmit the intention of the text data to the second AI agent server <NUM>.

The second AI agent server <NUM> may obtain an intention analysis result corresponding to the intention of the received text data, and transmit the obtained intention analysis result to the first AI agent server <NUM>.

The first AI agent server <NUM> may transmit the intention analysis result to the data conversion server <NUM>.

The data conversion server <NUM> may transmit the intention analysis result to the NLP client <NUM> of the display device <NUM>.

The display device <NUM> may further include an NLP client <NUM>, a voice agent <NUM>, and a renderer <NUM>.

The NLP client <NUM>, the voice agent <NUM>, and the renderer <NUM> may be included in the control unit <NUM> illustrated in <FIG>.

As another example, the NLP client <NUM> may be included in the network interface unit <NUM> illustrated in <FIG>.

The NLP client <NUM> may communicate with the data conversion server <NUM>.

The voice agent <NUM> may receive a signal for entering the voice recognition mode from the remote control device <NUM> and activate operation of a microphone provided in the display device <NUM> according to the received signal.

The voice agent <NUM> may transmit the voice command received from the microphone included in the display device <NUM> or the voice command received from the remote control device <NUM> to the NLP client <NUM>.

The voice agent <NUM> may receive intention analysis result information or search information received by the NLP client <NUM> from the NLP server <NUM>.

The voice agent <NUM> may execute an application or perform a function corresponding to a button key of the remote control device <NUM> based on the intention analysis result information.

The voice agent <NUM> may be included in the configuration of the NLP client <NUM>.

The renderer <NUM> may generate a UI through the GUI module to display the received search information on the display unit <NUM> and output the generated UI to the display unit <NUM>.

<FIG> is a ladder diagram for a method of operating an artificial intelligence system according to an embodiment of the present disclosure.

Hereinafter, a method of operating a system according to an embodiment of the present disclosure will be described with reference to <FIG>.

Also, hereinafter, the AI agent may be hardware or software that can recognize a voice command uttered by a user and provide information according to the intention of the recognized voice command.

The display device <NUM> or the NLP server <NUM> may be provided with a plurality of AI agents.

Meanwhile, some of the steps of <FIG> may be performed simultaneously, or the order of some steps may be reversed.

The control unit <NUM> of the display device <NUM> displays a program on the display unit <NUM> (S701).

In other words, the control unit <NUM> may be playing the program through the display unit <NUM>.

The control unit <NUM> of the display device <NUM> determines whether the search result UI is displayed on the display unit <NUM> (S703).

The search result UI may be a user interface indicating a search result displayed according to a user's utterance or a search command received from the remote control device <NUM>.

The search result may represent a search result of content such as a program.

The search result UI may include a plurality of content items according to the search result.

The control unit <NUM> may determine that the search result UI is displayed if the control unit receives the search term uttered by the user or the search command from the remote control device <NUM> and thus the search result is output.

If the search result UI is displayed on the display unit <NUM>, the control unit <NUM> of the display device <NUM> transmits the first viewing information to the NLP server <NUM> through the network interface unit <NUM> (S705).

The first viewing information may include one or more of content information included in the search result UI, information of a program being viewed, and a previous search term uttered by the user.

The content information included in the search result UI may include one or more of a title list including a plurality of titles corresponding to each of the plurality of content items, a title of the focused item among the plurality of content items, and an arrangement relationship (or arrangement order) of the content items.

The title may be a name identifying a content item.

The information of the program being viewed is information for identifying the program and may include the name of the program.

The previous search term may be a command uttered by the user who caused the display of the search result UI. The previous search word may be a search word received by the display device <NUM> immediately before receiving a new search word.

If the search result UI is not displayed on the display unit <NUM>, the control unit <NUM> of the display device <NUM> transmits the second viewing information to the NLP server <NUM> through the network interface unit <NUM> (S707).

The second viewing information may include one or more of information of a program being viewed and a previous search term that the user has uttered before.

The control unit <NUM> of the display device <NUM> receives a search command uttered by a user (S709).

According to an embodiment, the display device <NUM> may include a microphone and may receive a search command uttered by a user through the microphone.

In another embodiment, the wireless communication unit <NUM> of the display device <NUM> may receive a search command from the remote control device <NUM>. In other words, the user may utter a search command through the remote control device <NUM>, and the uttered search command may be transmitted to the display device <NUM> through the remote control device <NUM>.

The control unit <NUM> of the display device <NUM> transmits voice data corresponding to the search command to the NLP server <NUM> through the network interface unit <NUM> (S711).

The processor <NUM> of the NLP server <NUM> converts the received voice data into text data to obtain text data (S713).

The NLP server <NUM> may convert voice data into text data through the STT engine.

The processor <NUM> of the NLP server <NUM> obtains a first search query according to the intention analysis of the text data (S715).

The first search query may be a query reflecting a search intention of a search command uttered by a user.

The processor <NUM> of the NLP server <NUM> converts the first search query into a second search query based on the obtained first viewing information or second viewing information (S717).

If the first viewing information is received from the display device <NUM>, the processor <NUM> may convert the first search query into a second search query based on the first viewing information.

In other words, if the display device <NUM> displays the search result UI, the processor <NUM> may convert the first search query into a second search query based on the first viewing information.

If the second viewing information is received from the display device <NUM>, the processor <NUM> may convert the first search query into a second search query based on the second viewing information.

In other words, if the display device <NUM> does not display the search result UI, the processor <NUM> may convert the first search query into a second search query based on the second viewing information.

The second search query may be a query reflecting the name of the content in the search command uttered by the user.

In other words, the conversion of the first search query into the second search query may indicate generation of a second search query by including a name of a content item not included in the first search query.

Steps S715 and S717 will be described in more detail with reference to <FIG>.

<FIG> is a diagram illustrating a method for describing a process of completing a search query by an NLP server based on first viewing information or second viewing information according to an embodiment of the present disclosure.

<FIG> is more detailed steps of steps S715 and S717.

Referring to <FIG>, the processor <NUM> of the NLP server <NUM> determines whether the search command is a query indicating an Nth content item among a plurality of content items included in the search result UI according to the intention analysis of the search command.

The processor <NUM> may use the natural language processing engine to determine whether the intention of the search command is to select a content item at a specific location.

If the intention of the search command is a query for selecting the Nth content item, the processor <NUM> of the NLP server <NUM> extracts the Nth content item based on the title list included in the first viewing information (S803).

The title list may be a list including titles of a plurality of content items included in the search result UI displayed by the display device <NUM>.

The processor <NUM> may extract a title of the Nth content item included in the title list according to the intention of selecting the Nth content item.

The processor <NUM> of the NLP server <NUM> converts the first search query into a second search query by using the extracted Nth item title (S805).

The processor <NUM> may include the title of the Nth content item in the first search query to generate a second search query.

Meanwhile, if the intention of the search command is not a query for selecting the Nth content item, the processor <NUM> of the NLP server <NUM> determines whether a focused item exists among the plurality of content items included in the search result UI.

In one embodiment, the focused content item may be selected by the pointer <NUM> controlled by the remote control device <NUM> or may be a selected item through a highlight box.

If there is a focused item, the processor <NUM> of the NLP server <NUM> extracts the focused content item (S809).

The processor <NUM> may extract the title of the focused content item from the first viewing information.

The processor <NUM> of the NLP server <NUM> converts the first search query into a second search query by using the extracted title of the content item (S811).

The processor <NUM> may include the title of the extracted content item in the first search query to generate a second search query.

Meanwhile, if the focused content item does not exist on the search result UI, the processor <NUM> of the NLP server <NUM> determines whether a previous search term exists (S813).

If the intention of the search command is neither the selection of the Nth content item nor the focused content item, the processor <NUM> may determine whether a previous search term exists based on the second viewing information.

If the previous search term exists, the processor <NUM> of the NLP server <NUM> extracts the previous search term (S815) and converts the first search query to the second search query using the extracted previous search term (S817).

The processor <NUM> may generate a second search query by including the previous search term in the first search query.

If there is no previous search term (S813), the processor <NUM> of the NLP server <NUM> obtains an intention analysis result according to the intention analysis of the text data (S819).

The processor <NUM> may obtain the intention performance result (or search result) according to the intention analysis result from the first AI agent or the second AI agent, and transmit the obtained intention performance result to the display device <NUM>.

The processor <NUM> of the NLP server <NUM> determines whether the first AI agent can perform a search corresponding to the converted second search query (S719).

The processor <NUM> may transmit a second search query to the first AI agent server <NUM> to inquire whether a search according to the second search query is possible.

If a search according to the second search query is possible, the first AI agent server <NUM> may obtain a search result and transfer the obtained search result to the processor <NUM>.

As another example, the processor <NUM> may determine an agent capable of performing a search according to the second search query among the first AI agent and the second AI agent according to the type of the second search query.

For example, if the second search query is related to the movie, the target of the search may be determined as the first AI agent, and if the second search query is related to the weather, the target of the search may be determined as the second AI agent.

If the first AI agent determines that a search corresponding to the second search query can be performed, the processor <NUM> of the NLP server <NUM> obtains a search result corresponding to the second search query from the first AI agent server <NUM> and transmit the second search query and the search result of the first AI agent to the display device <NUM> through the communication unit <NUM> (S721).

The control unit <NUM> of the display device <NUM> stores the second search query received from the NLP server <NUM> in the storage unit <NUM> and displays the search result of the first AI agent on the display unit <NUM> (S723).

The control unit <NUM> may store the second search query as the previous search term in the storage unit <NUM>.

The control unit <NUM> may update the second search query with the most recently searched search term.

The search result of the first AI agent may be information provided in response to a search command uttered by a user.

If the first AI agent determines that a search corresponding to the second search query cannot be performed, the processor <NUM> of the NLP server <NUM> obtains a search result corresponding to the second search query from the second AI agent server <NUM> (S725).

The processor <NUM> of the NLP server <NUM> transmits the second search query and the search result of the second AI agent to the display device <NUM> through the communication unit <NUM> (S727).

The control unit <NUM> of the display device <NUM> stores the second search query in the storage unit <NUM>, and displays the search result of the second AI agent on the display unit <NUM> (S729).

Hereinafter, <FIG> is described in more detail.

<FIG> are diagrams for describing a process of performing an operation corresponding to a search command uttered by a user based on a display of a search result UI or a previous search term according to an embodiment of the present disclosure.

First, <FIG> and <FIG> are scenarios illustrating a case where a user utters a search command while a search result UI is displayed on the display unit <NUM>.

Referring to <FIG> and <FIG>, the display unit <NUM> of the display device <NUM> displays a program <NUM> and a search result UI <NUM>.

The search result UI <NUM> may be a content item list including content items searched by a user's utterance.

The search result UI <NUM> may include a plurality of content items <NUM> to <NUM> for identifying each of the plurality of contents.

According to step S705 of <FIG>, the display device <NUM> can transmit titles of content items included in the search result UI, an arrangement relationship (or arrangement order) of the content items, information of the program <NUM> being viewed, and, the first viewing information including one or more of the previous search word previously uttered by the user to the NLP server <NUM>.

The NLP server <NUM> may receive and store the first viewing information received from the display device <NUM>.

In <FIG>, while the display device <NUM> displays the search result UI <NUM>, the display device <NUM> may receive a search command "in the second one, who are characters?" and transmit voice data corresponding to the received search command to the NLP server <NUM>.

The NLP server <NUM> may obtain the first search query by converting the received voice data into text data.

The first search query may be a query indicating a search intention of the character of the specific content item.

The NLP server <NUM> may obtain a title corresponding to the second arranged content item by using the arrangement relationship of the plurality of content items included in the search result UI <NUM> and the titles of the plurality of content items.

The NLP server <NUM> may obtain a second search query that adds the title obtained to the first search query.

In <FIG>, the second search query may be <who are characters of BB?> including the BB which is the title of the second located content item <NUM>.

In other words, the second search query may be a query for searching for information on the character of the content item having the title of BB.

The NLP server <NUM> may obtain information on the character of the content item called BB from the first AI agent server <NUM> or the second AI agent server <NUM> according to the second search query, and transmit the obtained information on the character to the display device <NUM>.

The display device <NUM> may display the information <NUM> on the character received from the NLP server <NUM> on the display unit <NUM>.

As such, if the search result is displayed on the display device <NUM>, the search result may be transmitted to the NLP server <NUM> to analyze the user's utterance intention.

Accordingly, the user can enjoy an improved experience of obtaining the desired information without uttering the title of the content item.

In particular, <FIG> assumes that the second content item <NUM> of the first to third content items <NUM> to <NUM> included in the search result UI <NUM> is focused through the highlight box <NUM>.

In <FIG>, while the display device <NUM> displays the search result UI <NUM>, the display device <NUM> may receive a search command "Who are characters?", and transmit the voice data corresponding to the received search command to the NLP server <NUM>.

The NLP server <NUM> may obtain a title corresponding to the focused content item by using whether the plurality of content items included in the search result UI <NUM> are in focus and the titles of the plurality of content items.

The NLP server <NUM> may obtain a second search query to which the obtained title is added to the first search query.

In <FIG>, the second search query may be <who are characters of BB?> that includes the BB that is the title of the focused second content item <NUM>.

As such, if there is a focused item among the search results on the display device <NUM>, the search result of the focused item may be transmitted to the NLP server <NUM> to analyze the utterance intention of the user.

Accordingly, the user can enjoy an improved experience of obtaining desired information with the only simple utterance, without having to utter the title of the content item.

In particular, unlike embodiments of <FIG> and <FIG>, <FIG> is an example in which the user utters a search command "Who are characters?" while the search result UI is not displayed on the display unit <NUM>.

In addition, in <FIG>, it is assumed that the previous search term previously uttered by the user is <BB> which is the title of the second content item <NUM>.

The display device <NUM> may transmit, to the NLP server <NUM>, second viewing information including one or more of the information of the program <NUM> being viewed and the previous search term.

In <FIG>, the display device <NUM> may receive a search command "Who are characters?" and transmit voice data corresponding to the received search command to the NLP server <NUM>.

The first search query may be a query indicating a search intention of the character.

Since the NLP server <NUM> did not receive the information about the search result UI <NUM> from the display device <NUM>, the NLP server <NUM> may generate a second search query using the previous search term <BB>.

In other words, the NLP server <NUM> may obtain a second search query appended with <BB>, which is a previous search term obtained in the first search query.

In <FIG>, the second search query may be <who are characters of BB?> including the BB which is the title of the second content item <NUM>.

As such, according to an embodiment of the present disclosure, a user's utterance intention may be analyzed by using a previous search term.

Accordingly, the user can enjoy an improved experience of obtaining desired information with only simple utterance, without having to utter the title of the content item.

<FIG> and <FIG> illustrate an example of providing a search result through continuous utterance according to an embodiment of the present disclosure.

<FIG> may be a scenario performed after the embodiment of any one of <FIG>.

Referring to <FIG>, the display device <NUM> displays information <NUM> representing a search result of the character of the second content item <NUM>.

The display device <NUM> may receive an additional search command of <who is a director?>. The display device <NUM> may transmit voice data corresponding to the additional search command to the NLP server <NUM>.

The NLP server <NUM> may recognize that the second content item <NUM> is currently selected and search for information on the director who produced the second content item <NUM> based on the intention of the received voice data.

In other words, if an additional search command <who is a director?> is received in a state where the second content item <NUM> is selected among the first to the third content items <NUM> to <NUM>, the additional search command may be recognized as a search query requesting the search for information related to the second content item <NUM>.

The NLP server <NUM> may obtain search information related to the second content item <NUM> with respect to the received additional search command until the intention of canceling the selection of the second content item <NUM> is determined.

The NLP server <NUM> may obtain the search information for the director who produced the second content item <NUM> from the first AI agent server <NUM> or the second AI agent server <NUM>, and transmit the search information for the obtained director to the display device <NUM>.

The display device <NUM> may display the received search information <NUM> on the director on the display unit <NUM>.

In this state, the display device <NUM> may receive an additional search command of <what about box office performance?>. The display device <NUM> may transmit voice data corresponding to the additional search command to the NLP server <NUM>.

The NLP server <NUM> can recognize that the second content item <NUM> is currently selected, and the box office performance of the second content item <NUM> can be searched based on the title of the second content item <NUM> based on the intention of the received voice data.

In other words, if the NLP server <NUM> receives the additional search command < what about box office performance?> While the second content item <NUM> is selected among the first to third content items <NUM> to <NUM>, the NLP server <NUM> may recognize the additional search request as a search query requesting the search for information related to the second content item <NUM>.

The NLP server <NUM> may obtain search information indicating the box office performance of the second content item <NUM> from the first AI agent server <NUM> or the second AI agent server <NUM>, and transmit the search information about the obtained box office performance may be transmitted to the display device <NUM>.

The display device <NUM> may display the search information <NUM> on the received box office performance on the display unit <NUM>.

As described above, according to the present embodiment, in a multi-AI agent structure, a user may continuously search for information to be checked through continuous utterance.

Accordingly, the user may feel an improved experience of confirming various search results.

Meanwhile, the intention of canceling the selection of the second content item <NUM> may be identified if re-requesting the display of the search result UI <NUM>.

As another example, the intention of canceling the selection of the second content item <NUM> may be identified if a selection of a content item other than the second content item <NUM> is requested.

<FIG> is a diagram for describing a process of canceling the selection of a content item.

Referring to <FIG>, the display device <NUM> displays information <NUM> indicating the box office performance of the second content item <NUM>.

In this state, the user can utter a <first item>.

The display device <NUM> may receive a voice command "the first item" and cancel the selection of the second content item <NUM> according to the received voice command.

In detail, the display device <NUM> may transmit voice data of a voice command of <first item> to the NLP server <NUM>.

The NLP server <NUM> may convert the received voice data into text data, and recognize that the intention of the converted text data is to select the first content item <NUM>.

In other words, the NLP server <NUM> may recognize the intention of the text data as the intention of canceling the selection of the second content item <NUM>.

The NLP server <NUM> may cancel the selection of the second content item <NUM> and transmit a request to display the search result UI <NUM> to the display device <NUM>.

In response to the request received from the NLP server <NUM>, the display device <NUM> may convert the information <NUM> indicating the box office performance into the search result UI <NUM>.

In other words, the display device <NUM> may display the search result UI <NUM> on the display unit <NUM>.

At the same time, the display device <NUM> may focus the first content item <NUM> located first of the search result UI <NUM>. In other words, the selection of the second content item <NUM> is canceled by the user's utterance of <first item> and the first content item <NUM> may be automatically selected.

Thereafter, the user may utter a search command to receive a search result with respect to the first content item <NUM>.

As described above, according to an embodiment of the present disclosure, a user may select or cancel a content item and search for information on the desired content item by simple utterance. As another example, the NLP server <NUM> may receive a request for canceling the selection of the second content item <NUM> from the display device <NUM>. The display device <NUM> may receive a selection canceling request from the remote control device <NUM> and transmit the received selection canceling request to the NLP server <NUM>.

Next, a method for operating an artificial intelligence system according to another embodiment of the present disclosure will be described.

<FIG> is a ladder diagram for describing a method of operating an artificial intelligence system, according to another embodiment.

Referring to <FIG>, the control unit <NUM> of the display device <NUM> displays a program image on the display unit <NUM> (S1301).

The control unit <NUM> of the display device <NUM> obtains information of an object included in a program image (S1303).

In an embodiment, the control unit <NUM> may capture a program image and transmit the captured image to the image recognition server.

The image recognition server may recognize one or more objects included in the image from the captured image. The image recognition server may recognize an object from the image by using an image recognition model supervised by a deep learning algorithm or a machine learning algorithm.

In other words, the image recognition server may obtain a name for identifying the object from the image.

The image recognition server may transmit a name for identifying the object to the display device <NUM>.

In another embodiment, a pointer <NUM> controlled by the remote control device <NUM> may be displayed on the display unit <NUM>.

The captured image of the program image may include a pointer <NUM>.

The image recognition server may identify an object corresponding to the position of the pointer <NUM> using the image recognition model.

The image recognition server may identify the pointer <NUM> from the captured image and identify an object corresponding to the position of the pointer <NUM>.

The image recognition server may transmit the name of the identified object to the display device <NUM>.

The control unit <NUM> of the display device <NUM> receives a voice command (S1305), and transmits voice data and object information corresponding to the received voice command to the NLP server <NUM> (S1307).

The processor <NUM> of the NLP server <NUM> converts the voice data received from the display device <NUM> into text data to obtain text data (S1309).

The NLP server <NUM> may convert voice data into text data using the STT engine.

The processor <NUM> of the NLP server <NUM> obtains a first query based on the intention analysis of the text data (S1311).

The first query may reflect a result of intention analysis of a voice command uttered by a user.

The processor <NUM> of the NLP server <NUM> converts the first query to the second query based on the information of the object (S1313).

The processor <NUM> may combine the name of the object with the first query to generate a second query.

The processor <NUM> of the NLP server <NUM> obtains an intention performance result corresponding to the second query from any one of the plurality of AI agents (S1315).

The processor <NUM> may transmit a second query to the first AI agent <NUM> or the second AI agent <NUM> and may obtain the intention performance result corresponding to the second query from the first AI agent <NUM> or the second AI agent <NUM>.

If the second query reflects the intention of searching for detailed information on the object, the intention performance result may be a search result of the detailed information of the object.

The processor <NUM> of the NLP server <NUM> transmits the intention performance result to the display device <NUM> through the communication unit <NUM> (S1317).

The control unit <NUM> of the display device <NUM> displays the intention performance result received from the NLP server <NUM> on the display unit <NUM> (S1319).

Meanwhile, some of the steps illustrated in <FIG> may be performed at the same time, and the order of the steps may be reversed.

<FIG> and <FIG> are diagrams for describing an embodiment of grasping a user's utterance intention using an object recognition technology.

Referring to <FIG>, the display device <NUM> displays a program image <NUM> on the display unit <NUM>.

The user may place the pointer <NUM> on the sneaker <NUM> included in the program image <NUM> through the manipulation of the remote control device <NUM>.

The display device <NUM> may capture the program image <NUM> and transmit the captured image to the image recognition server.

The display device <NUM> may obtain the coordinates of the pointer <NUM> and transmit the captured image and the coordinates of the pointer <NUM> to the image recognition server <NUM> together.

The display device <NUM> may capture the program image <NUM> at the time if the voice command of the user is received. In other words, the voice command uttered by the user may be a trigger for capturing the program image <NUM>.

The image recognition server may be included in the NLP server <NUM>.

The image recognition server may analyze the captured image using the image recognition model and identify the sneaker <NUM> corresponding to the position of the pointer <NUM> included in the image.

The image recognition server may transmit the information of the sneaker including one or more of the name and the brand of the sneaker to the display device <NUM>.

The display device <NUM> may receive a voice command "Please, add that to the shopping list" and transmit voice data of the received voice command and information of the sneaker to the NLP server <NUM>.

The NLP server <NUM> may convert the voice data into text data and obtain a first query reflecting the intention of adding the object to the shopping list according to the intention analysis operation.

The NLP server <NUM> may combine the information of the sneakers with the first query to generate a second query. The second query may reflect the intention to add A brand sneakers to the shopping list.

The NLP server <NUM> may transmit a second query to the first AI agent server <NUM> or the second AI agent server <NUM>, and receive detailed information on the A brand sneakers.

The NLP server <NUM> may add the received detailed information of the A brand to the shopping list and transmit the shopping list reflecting the detailed information of the A brand to the display device <NUM>.

The display device <NUM> may display the shopping list <NUM> including the detailed information <NUM> of the A brand on the display unit <NUM>.

As described above, according to the embodiment of the present disclosure, the user may check the desired action or the detailed information of the object with respect to the object included in the program image by simple utterance while viewing the program.

The image recognition server may analyze the captured image by using the image recognition model and recognize a landmark included in the image.

The image recognition server may transmit the landmark information including the name of the landmark to the display device <NUM>.

The display device <NUM> may receive a voice command "how long does it take there?" and transmit voice data of the received voice command and landmark information to the NLP server <NUM>.

The NLP server <NUM> may convert the voice data into text data and obtain a first query that reflects the intention of requesting the time required to go to the landmark from the current location according to the intention analysis operation.

The NLP server <NUM> may combine the name of the landmark with the first query to generate a second query. The second query may reflect the intention to want the time which takes from the current location to the B bridge.

The NLP server <NUM> may transmit the second query to the first AI agent server <NUM> or the second AI agent server <NUM> and receive detailed information including the time which takes to reach the A bridge.

The NLP server <NUM> may transmit the received detailed information to the display device <NUM>.

The display device <NUM> may display the detailed information <NUM> on the display unit <NUM> including the distance to the A bridge and the time which takes to go to the A bridge through the plane.

As described above, according to the embodiment of the present disclosure, the user may check the desired action with respect to the object or the detailed information of the object included in the program image by simple utterance while viewing the program.

<FIG> is a view for describing another form of artificial intelligence system according to the embodiment of <FIG>.

Compared to the artificial intelligence system <NUM> of <FIG>, the artificial intelligence system <NUM> of <FIG> has an additional configuration of an image recognition server <NUM> and an image recognizer <NUM>.

The image recognizer <NUM> may be included in the control unit <NUM> of the display device <NUM>.

The image recognizer <NUM> may capture a program image displayed on the display unit <NUM> and transmit the captured image to the image recognition server <NUM>.

The image recognizer <NUM> may capture a program image in real time or periodically.

As another example, the image recognizer <NUM> may capture a program image if a voice command of a user is received.

At the time of capturing, the image recognizer <NUM> may obtain the coordinates of the pointer <NUM> and transmit the captured image and the coordinates of the pointer <NUM> to the image recognition server <NUM>.

The image recognizer <NUM> may be configured to exist separately from the control unit <NUM>.

The image recognition server <NUM> may recognize an object included in the captured image received from the image recognizer <NUM> using the image recognition model.

If the image recognition server <NUM> receives the captured image and the coordinates of the pointer <NUM> together, the image recognition server <NUM> may recognize an object corresponding to the coordinates of the pointer <NUM>.

The image recognition server <NUM> may transmit identification information of the object including the name of the recognized object to the image recognizer <NUM>.

The image recognizer <NUM> may transmit identification information of the object to the NLP client <NUM>.

The NLP client <NUM> may transmit voice data corresponding to the object identification information and the voice command uttered by the user to the data conversion server <NUM>.

The data conversion server <NUM> may convert the voice data into text data and transmit the converted text data and identification information of the object to the NLP server <NUM>.

The NLP server <NUM> may obtain a first query indicating the intention analysis result of text data, and generate a second query based on the identification information of the object and the first query.

The NLP server <NUM> may transmit the second query to the first AI agent server <NUM> or the second AI agent server <NUM>, and obtain the intention performance result of the second query from either of the first AI agent server <NUM> or the second AI agent server <NUM>.

The NLP server <NUM> may transmit the intention performance result to the data conversion server <NUM>, and the data conversion server <NUM> may transmit the intention performance result to the NLP client <NUM> in the form of text data.

According to an embodiment of the present disclosure, the above-described method may be embodied as a processor readable code on a medium in which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet).

Claim 1:
An artificial intelligence device (<NUM>) comprising:
a communication interface (<NUM>) configured to communicate with a display device (<NUM>); and
a processor (<NUM>) configured to:
receive viewing information and voice data corresponding to a search command from the display device (<NUM>) through the communication interface (<NUM>), and
convert the received voice data into text data,
obtain a first query indicating the intention of the converted text data,
convert the first query into a second query based on the viewing information,
obtain a search result corresponding to the converted second query, and
transmit the obtained search result to the display device (<NUM>),
characterized in that the processor (<NUM>) is further configured to:
determine an AI agent to perform a search corresponding to the second search query among a plurality of AI agents, and
obtain the search result corresponding to the second search query from the determined AI agent.