Patent Description:
Digital TV services using wired or wireless communication networks are becoming common. Digital TV services are capable of providing various services that could not be provided by the existing analog broadcasting services.

For example, Internet Protocol Television (IPTV) and smart TV services, which are types of digital TV services, provide interactivity so that users can actively select the types of programs, the viewing time, and the like. The IPTV and smart TV services can provide various additional services, such as Internet search, home shopping, and online games, based on such interactivity.

In addition, recent TVs provide a speech recognition service that recognizes a speech uttered by a user and performs a function corresponding to the speech.

A conventional speech recognition service induces a user's utterance by providing limited utterance words that do not reflect the user's viewing history, viewing situation, and utterance history.

However, the provision of such limited utterance words has a limitation in effectively providing the speech recognition service, and furthermore, the use of the speech recognition service is limited for users who have difficulty in using speech.

<CIT> discloses a method of processing speech for a virtual assistant to control television user interactions. The virtual assistant is described to provide query suggestions that can include targeted suggestions related to displayed content (e.g., add this show to a watch list, share this show via social media, show me the soundtrack of this movie, show me the book that this guest is selling, show me the trailer for the movie that guest is plugging, etc.), user preferences (e.g., closed captioning use, etc.), user-owned content, content stored on a user's device, notifications, alerts, a viewing history of media content (e.g., recently displayed menu items, recently displayed scenes of a show, recent actor appearances, etc.).

<CIT> discloses voice control of home automation systems. The method includes building a history database on a storage device that maintains events that have occurred in the home automation system, each event indicating one or more services activated, one or more scenes activated or one or more types of media content presented by the home automation system; selecting a subset of the events of the history database based on a present condition of the home automation.

system to produce a predication dataset; based on the prediction dataset, selecting one or more intentions from a list of intentions, wherein each intention includes a key phrase recognized by the voice recognition engine paired with an action performed in response to the key phrase; and displaying, to a current user in a user interface on a remote control or mobile device of the home automation system, the key phrases from the one or more selected intentions as key phrase suggestions.

<CIT> discloses a computer system that can relive the user from the burden of having to learn and remember different voice commands. The identity of a user interacting with a computing system a computing system is determined, and a voice command is selected from a set of voice commands based on the user identity. A voice-command suggestion corresponding to the voice command is selected and presented via a display.

The present disclosure aims to provide a display device capable of recommending utterance words suitable for a user based on at least one of a user's viewing history, utterance history, or viewing situation.

The present disclosure aims to provide a display device capable of facilitating access to a speech recognition service by recommending utterance words suitable for a user even for a user having difficulty in using speech.

According to the present invention a display device is set forth in claim <NUM>. Further preferred embodiments are provided in the dependent claims.

According to embodiments of the present disclosure, recommended utterance words are provided to a user by using a user's viewing history, viewing situation, utterance history, and the like, thereby allowing the user to more easily use a speech recognition service function.

In addition, the speech recognition service function can be conveniently provided to a user who has difficulty in using a speech recognition service.

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 sound 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. That is, 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. That is, 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 shown) 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.

Moreover, 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 interworking) 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.

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

That is, 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. Additionally, a function performed by each block is to describe 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 <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 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 sound 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, and this embodiment does not limit the scope of the present disclosure.

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 in response to manipulation of the user input unit <NUM> or image or voice signals 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 sound acquisition unit <NUM> of the remote control device <NUM> can obtain voice.

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

<FIG> is a view illustrating an example 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 other hand, if a user moves the remote control device <NUM> close to the display unit <NUM>, a selection area in the display unit <NUM> corresponding to the pointer <NUM> can be zoomed out and displayed in a reduced size.

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. That is, 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.

Next, an embodiment of recommending utterance words to a user when a speech recognition service is provided will be described with reference to the accompanying drawings.

<FIG> is a flowchart for describing an operating method of the display device according to an embodiment of the present disclosure.

The control unit <NUM> of the display device <NUM> acquires viewing history information including a user's viewing time and information on content viewed at the corresponding viewing time (S501).

The viewing history information can include at least one of the viewing time for which a user views the content through the display device <NUM>, channel information of the content, the genre of the content viewed for the viewing time, the name of the content, the name of the application used when viewing the content, or the usage history of the content provider (or the content provider's application) used when viewing the content.

The content can include a broadcast program, a web video viewed through a web service, and the like.

When the content is a broadcast program, the control unit <NUM> can acquire the name of the program and the genre of the program from an electronic program guide (EPG).

When the content is a web moving picture, the control unit <NUM> can identify the genre of the web moving picture by using the name of the content.

In an embodiment, the control unit <NUM> can acquire the genre of the content only for the content that has been reproduced for a predetermined time or longer. That is, the control unit <NUM> may not collect content information for the content viewed by the user's temporary channel change.

On the other hand, the user's viewing history information can be stored in the storage unit <NUM>.

The user's viewing history information can be periodically updated.

The control unit <NUM> acquires a plurality of recommended utterance words based on the viewing history information (S503).

In an embodiment, the control unit <NUM> can acquire, based on the viewing history information, one or more recommended utterance words to be provided to the user when the speech recognition service is provided.

For example, the control unit <NUM> may acquire a plurality of recommended utterance words by analyzing the viewing history information by itself.

As another example, the control unit <NUM> can transmit the viewing history information to a server (not shown), and the server can acquire a plurality of utterance words by analyzing the viewing history information. The control unit <NUM> can receive the plurality of recommended utterance words from the server.

The control unit <NUM> can identify the user's viewing pattern from the viewing history information, and can acquire recommended utterance words matching the identified viewing pattern.

<FIG> are views illustrating examples of recommended utterance words acquired based on the user's viewing pattern according to an embodiment of the present disclosure.

<FIG> illustrates viewing history information <NUM> acquired by the control unit <NUM> and a recommended utterance word list <NUM> including a plurality of recommended utterance words acquired based on the viewing history information <NUM>.

The control unit <NUM> may identify the genre of content that the user views through the display device <NUM> at a specific time zone during a predetermined period of time. Here, the predetermined period of time can be one month, but this is just exemplary.

For example, if the number of times the user viewed drama content at <NUM> pm during one month is a certain number of times or more, the control unit <NUM> can acquire the viewing history information <NUM> of <<NUM> pm, drama content is mainly viewed>.

The control unit <NUM> can acquire recommended utterance words such as <Show a drama that airs at <NUM> o'clock> and <Show a drama channel> that match the acquired viewing history information <NUM>.

That is, the control unit <NUM> may acquire a text including the viewing time and the genre as the recommended utterance words.

When the display device <NUM> is turned on before or after <NUM> pm, the control unit <NUM> may display, on the display unit <NUM>, the recommended utterance word list <NUM> including the recommended utterance words.

The control unit <NUM> can acquire, as the viewing history information <NUM>, the name of the content that the user most recently viewed through the display device <NUM> and the name of the application (or the name of the content provider) used when viewing the content.

On the basis of the acquired viewing history information <NUM>, the control unit <NUM> can acquire the recommended utterance word list <NUM> including the recommended utterance words such as <Play when a romance starts>, <Find a drama starring Jessy>, and <Find a romance in application A> that match the viewing history information <NUM>.

That is, the control unit <NUM> can generate the recommended utterance words by reflecting the viewing history information <NUM> including the name of the drama that the user recently viewed, the name of the main character appearing in the drama, and the name of the application providing the drama.

That is, according to an embodiment of the present disclosure, instead of the utterance words for simple search such as the name of the content, the user-customized utterance words such as the genre of the content, the characters of the content, and the name of the content provider providing the content can be provided.

On the other hand, according to another embodiment of the present disclosure, the control unit <NUM> may acquire recommended utterance words by further considering the viewing situation information in addition to the viewing history information.

The viewing situation information can be information on the viewing situation of the display device <NUM>.

The viewing situation information can include one or more of information on an external device capable of interworking with the display device <NUM>, status information on a home appliance, user's schedule information, and weather information at the time of viewing content.

<FIG> is a view for describing an example of recommended utterance words acquired by additionally considering the viewing situation according to an embodiment of the present disclosure.

It is assumed that the viewing history information <NUM> according to the embodiment of <FIG> is used.

In addition, the viewing situation information can be information about a situation (dim processing) in which the light in the house is dimly adjusted when the user views drama content at <NUM> pm.

The control unit <NUM> can acquire, as the viewing situation information <NUM>, a situation in which the light is dimly adjusted when the light in the house is dimmed more than a certain number of times when the user views the drama content at <NUM> pm.

The control unit <NUM> can acquire recommended utterance words based on the viewing history information <NUM> and the viewing situation information <NUM>.

That is, the control unit <NUM> can acquire, in addition to the recommended utterance words such as <Show a drama that airs at <NUM> o'clock> and <Show a drama channel> that match the viewing history information <NUM>, a recommended utterance word list <NUM> including recommended utterance words such as <Dim the lights> that match the viewing situation information <NUM>.

As another example, the control unit <NUM> can receive weather information from the server and can acquire recommended utterance words based on the weather information. For example, if the current weather is rainy, the control unit <NUM> may acquire recommended utterance words such as <Play a music channel that is good to listen to on a rainy day>.

According to another embodiment of the present disclosure, the control unit <NUM> can acquire one or more recommended utterance words based on the utterance history.

The control unit <NUM> can collect utterance words uttered by the user and can acquire the collected utterance words as the recommended utterance words.

The control unit <NUM> can acquire, as the recommended utterances, only utterance words uttered a certain number of times or more among the collected utterance words.

According to another embodiment of the present disclosure, the control unit <NUM> can acquire the recommended utterance words based on the location of the display device <NUM>.

For example, when the location of the display device <NUM> is a specific area, a channel or a name of a program broadcast only in the specific area can be acquired as the recommended utterance words.

According to another embodiment of the present disclosure, the control unit <NUM> may acquire, as the recommended utterance words, an utterance word that the user does not use. The control unit <NUM> can acquire, as the recommended utterance words, an utterance word that the user does not use and the manufacturer of the display device <NUM> can provide.

The control unit <NUM> receives a command for requesting a speech recognition service (S505), and displays a plurality of recommended utterance words on the display unit <NUM> according to the received command (S507).

In an embodiment, the control unit <NUM> may receive, from the remote control device <NUM>, a command for requesting a speech recognition service. The user can select the voice recognition button <NUM> provided in the remote control device <NUM>. The remote control device <NUM> may transmit, to the display device <NUM>, a signal requesting the provision of the speech recognition service according to the selection of the voice recognition button <NUM>.

The control unit <NUM> can receive, from the remote control device <NUM>, the signal requesting the provision of the speech recognition service, and can display, on the display unit <NUM>, a speech recognition service screen for providing the speech recognition service according to the received signal.

As another example, the command for requesting the speech recognition service may be received through a user's voice command.

The control unit <NUM> can receive a voice command requesting the provision of the speech recognition service through a microphone (not shown) provided in the display device <NUM>. The control unit <NUM> may recognize the received voice command and display the speech recognition service screen on the display unit <NUM>.

The voice command for requesting the provision of the speech recognition service may be a wake-up command for activating the speech recognition service of the display device <NUM>.

The speech recognition service screen can include a plurality of acquired recommended utterance words.

<FIG> are views for describing examples of speech recognition service screens including a plurality of recommended utterance words according to various embodiments of the present disclosure.

In particular, <FIG> is a view for describing an example of displaying a plurality of recommended utterance words <NUM> and <NUM> through an initial provision screen <NUM> for a speech recognition service.

The control unit <NUM> of the display device <NUM> can receive, from the remote control device <NUM>, a command for providing the speech recognition service, and can display, on the display unit <NUM>, the initial provision screen <NUM> for the speech recognition service according to the received command.

That is, as the microphone-shaped voice recognition button <NUM> is selected, the remote control device <NUM> can transmit, to the display device <NUM>, the command for requesting the speech recognition service.

The control unit <NUM> of the display device <NUM> can display, on the display unit <NUM>, the initial provision screen <NUM> including a plurality of recommended utterance words <NUM> and <NUM> according to the command received from the remote control device <NUM>.

The initial provision screen <NUM> can include the text <NUM> for inducing the utterance of the voice and the plurality of recommended utterance words <NUM> and <NUM>.

Each of the plurality of recommended utterance words <NUM> and <NUM> can be utterance words generated based on the viewing history information <NUM> of <FIG>.

As described above, according to an embodiment of the present disclosure, the user can be guided to customized utterance words only by selecting the voice recognition button <NUM> provided in the remote control device <NUM>. Accordingly, the user can access the content of interest more conveniently and quickly.

On the other hand, as the user utters any one of the plurality of recommended utterance words <NUM> and <NUM> included on the initial provision screen <NUM>, the speech recognition service corresponding to the corresponding utterance word can be provided.

That is, the display device <NUM> can receive the recommended utterance words uttered by the user and can display a search result corresponding to the received utterance words.

As another example, when the user selects any one of the plurality of recommended utterance words <NUM> and <NUM> through the remote control device <NUM>, the speech recognition service corresponding to the corresponding utterance word may be provided.

That is, the display device <NUM> can display a search result corresponding to the selected utterance word according to the command for selecting the utterance word received from the remote control device <NUM>.

<FIG> is a view for describing an example of providing a plurality of recommended utterance words on an utterance guide screen <NUM>.

When the display device <NUM> receives a command for requesting a speech recognition service, the display device <NUM> can display the utterance guide screen <NUM> on the display unit <NUM>.

The speech guide screen <NUM> can be a screen for guiding a user to utter a suitable utterance word.

The utterance guide screen <NUM> can include a recommended utterance word list <NUM> including recommended utterance words acquired based on at least one of viewing history information or viewing situation information.

The user can receive desired content only by reading the recommended utterance words or selecting the recommended utterance words without having to worry about the utterance words through the customized recommended utterance words included in the utterance guide screen <NUM>.

<FIG> is a view for describing an example of providing recommended utterance words through a content search result screen <NUM>.

When the display device <NUM> receives a command for requesting content search, the display device <NUM> can display, on the display unit <NUM>, the content search result screen <NUM> indicating a content search result.

The content search result screen <NUM> can include recommended utterance words <NUM>, <NUM>, and <NUM> acquired based on at least one of viewing history information or viewing situation information.

The user can receive desired content only by reading the recommended utterance words or selecting the recommended utterance words without having to worry about the utterance words through the customized recommended utterance words included in the content search result screen <NUM>.

The control unit <NUM> receives a voice command (S509), and determines whether the received voice command is one of a plurality of recommended utterance words displayed on the display unit <NUM> (S511).

In an embodiment, the control unit <NUM> may receive the voice command from the remote control device <NUM>. That is, the user can receive the voice command through a microphone provided in the remote control device <NUM>, and can transmit the received voice command to the display device <NUM> through short-range wireless communication.

In still another embodiment, the control unit <NUM> can directly receive a user's voice command through a microphone provided in the display device <NUM>.

When the received voice command is any one of the plurality of recommended utterance words, the control unit <NUM> performs an operation corresponding to the recommended utterance word (S513).

The control unit <NUM> can analyze the intention of the recommended utterance word by using a natural language processing engine of the recommended utterance word, and can perform an operation according to the analyzed intention.

For example, when the recommended utterance word is an utterance word corresponding to the content search, the control unit <NUM> can search for content corresponding to the recommended utterance word and can display the search result on the display unit <NUM>.

On the other hand, the recommended utterance words can be selected through the voice command uttered by the user, or can be selected by the pointer <NUM> (see <FIG>) controlled according to the movement of the remote control device <NUM>.

When the received voice command is not included in the plurality of recommended utterance words, the control unit <NUM> performs an operation corresponding to the voice command (S515).

When the received voice command is not any one of the plurality of recommended utterance words, the control unit <NUM> can analyze the intention of the voice command and can perform an operation according to the analyzed intention.

The control unit <NUM> can analyze the intention of the voice command by using a natural language processing engine, and can perform an operation according to the analyzed intention.

According to still another embodiment of the present disclosure, a plurality of recommended utterance words can be listed based on priority.

<FIG> and <FIG> are views for describing an example in which a plurality of recommended utterance words are listed in the order of priority according to an embodiment of the present disclosure.

<FIG> is a view for describing the priority as the standard for listing the plurality of recommended utterance words.

The control unit <NUM> can list the plurality of recommended utterance words on the display unit <NUM> according to the priority.

The control unit <NUM> can determine the priority based on the acquired type of the recommended utterance word.

For example, the control unit <NUM> can set viewing history information, which is the basis for acquiring the recommended utterance words, as the first priority, utterance history information as the second priority, viewing situation information as the third priority, location information as the fourth priority, and the user's unused utterance words as the fifth priority.

The priorities according to the acquired type of the utterance words shown in <FIG> are exemplary and can vary according to a user's setting.

As the priority corresponding to the acquired type of the utterance word is higher, the control unit <NUM> can arrange the corresponding recommended utterance word at the uppermost position, and as the priority is lower, the control unit <NUM> can arrange the corresponding recommended utterance word at the lowermost position.

<FIG> illustrates a recommended utterance word list <NUM> displayed on the display unit <NUM> when the speech recognition service is provided.

The control unit <NUM> can arrange a first recommended utterance word <NUM> acquired based on the viewing history information corresponding to the first priority at the uppermost position of the recommended utterance word list <NUM>.

The control unit <NUM> can arrange a second recommended utterance word <NUM> acquired based on the utterance history information corresponding to the second priority the position below the first recommended utterance word <NUM>.

In addition, the control unit <NUM> can arrange a third recommended utterance word <NUM> acquired based on the viewing situation information corresponding to the third priority at the position below the second recommended utterance word <NUM>.

The control unit <NUM> can arrange a fourth recommended utterance word <NUM> acquired based on the position information corresponding to the fourth priority at the position below the third recommended utterance word <NUM>.

The control unit <NUM> can arrange the user's unused utterance word <NUM> corresponding to the fifth priority at the lowermost position.

On the other hand, the user's unused utterance word <NUM> can be an utterance word corresponding to a speech recognition function recommended by the manufacturer of the display device <NUM>.

<FIG> is a view for describing an example of providing personalized recommended utterance words to each of a plurality of users according to an embodiment of the present disclosure.

The control unit <NUM> can provide a personalized recommended utterance word list to each of a plurality of users who use the display device <NUM>.

That is, the control unit <NUM> can provide personalized recommended utterance words based on at least one of viewing history information, viewing situation information, or utterance history information of each of the plurality of users who use the display device <NUM>.

For example, when a user A logs in to the display device <NUM>, the control unit <NUM> can display, on the display unit <NUM>, a first recommended utterance word list <NUM> including the acquired recommended utterance words based on at least one of viewing history information, viewing situation information, or utterance history information of the user A.

Similarly, when a user B logs in to the display device <NUM>, the control unit <NUM> can display, on the display unit <NUM>, a second recommended utterance word list <NUM> including the acquired recommended utterance words based on at least one of viewing history information, viewing situation information, or utterance history information of the user B.

For example, when a user C logs in to the display device <NUM>, the control unit <NUM> can display, on the display unit <NUM>, a third recommended utterance word list <NUM> including the acquired recommended utterance words based on at least one of viewing history information, viewing situation information, or utterance history information of the user C.

<FIG> is a view for describing an example of recommended utterance words including blanks according to an embodiment of the present disclosure.

Recommended utterance words recommended by the display device <NUM> can include some blanks. This can be for inducing a user to directly utter a name of a person who wants to search for in the blank.

For example, referring to a recommended utterance word list <NUM> of <FIG>, a recommended utterance word <NUM> including blanks among a plurality of recommended utterance words <NUM> to <NUM> is shown.

The recommended utterance word <NUM> can include blanks in a portion corresponding to a character in a movie, such as <Find a movie starring ooo>.

The user can utter a name of a movie actor he or she wants to search for in the blank, and can receive a search result of a movie starring the movie actor.

On the other hand, the recommended utterance word <NUM> including the blank is displayed separately from other recommended utterance words <NUM>, <NUM>, <NUM>, and <NUM>.

In addition, the recommended utterance word <NUM> including the blanks is an utterance word that cannot be selected.

That is, the control unit <NUM> does not perform any operation even if the recommended utterance word <NUM> including the blanks is selected.

The control unit <NUM> may display selectable recommended utterance words and non-selectable recommended utterance words in a distinguishing manner.

<FIG> is a view for describing a process of receiving recommended utterance words from a server according to another embodiment of the present disclosure.

<FIG> illustrates a server <NUM> that is connectable to the network interface unit <NUM> of the display device <NUM>.

The display device <NUM> can transmit, to the server <NUM>, one or more of viewing history information, viewing situation information, and utterance history information. The corresponding information can be periodically transmitted to the server <NUM>.

The server <NUM> can generate recommended utterance words based on one or more of viewing history information, viewing situation information, and utterance history information, and can transmit the generated recommended utterance words to the display device <NUM>.

On the other hand, when receiving a request for a speech recognition service, the display device <NUM> can display recommended utterance words received from the server <NUM> and stored in advance when network connection delay or network disconnection occurs.

That is, even if there is a problem in network connection with the server <NUM>, the display device <NUM> can recommended utterance words to the user by using the recommended utterance words received from the server <NUM> and stored in advance.

According to still another embodiment of the present disclosure, the display device <NUM> can acquire recommended utterance words based on the utterance history of an external device capable of interworking with the display device <NUM>.

For example, when the external device capable of interworking with the display device <NUM> is a user's smartphone, the display device <NUM> can receive, from the smartphone, the utterance history uttered by the user through the smartphone having a speech recognition function.

The display device <NUM> can acquire recommended utterance words based on the utterance history received from the smartphone.

The display device <NUM> recommends utterance words linked to a user's schedule.

Based on schedule information, the display device <NUM> displays recommended utterance words before the time corresponding to the schedule information.

For example, when the user has a meeting at <NUM> pm, the display device <NUM> can display recommended utterance words such as <What should I do?> at <NUM> pm. The schedule information is information received from a user's smartphone, which can be stored in the display device <NUM>.

According to still another embodiment of the present disclosure, the display device <NUM> can acquire and display recommended utterance words based on viewing history information and an electronic program guide.

For example, when it is determined that the user has viewed a baseball game more than a preset number of times, the display device <NUM> can acquire recommended utterance words for inducing provision of a baseball score.

That is, based on the electronic program guide, when the baseball game program is being broadcast at the current time, the display device <NUM> can acquire recommended utterance words such as <Tell me about the baseball score> and can display the recommended utterance words on the display unit <NUM>.

As described above, according to embodiments of the present disclosure, recommended utterance words are provided to a user by using the user's viewing history, viewing situation, utterance history, and the like, thereby allowing the user to more easily use the speech recognition service function.

In addition, the speech recognition service function can be conveniently provided to a user who has difficulty in using the speech recognition service.

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

Claim 1:
A display device for providing a speech recognition service, the display device comprising:
a storage unit configured to store a user's viewing history;
a display unit; and
a control unit configured to acquire a plurality of recommended utterance words based on the stored viewing history information, receive a command for requesting the speech recognition service, and display the plurality of acquired recommended utterance words on the display unit according to the received command,
wherein
a recommended utterance word including a blank among the plurality of recommended utterance words is displayed separately from other recommended utterance words,
wherein the blank is provided to induce the user to utter an utterance word corresponding to the blank, and
wherein the control unit is configured to perform no operation when the recommended utterance word including the blank is selected,
wherein the control unit is configured to further acquire viewing situation information including a schedule information of a user received from a smartphone of the user interworking with the display device, acquire a recommended utterance word linked to the schedule information, and display the recommended utterance word linked to the schedule information before a time corresponding to the schedule information.