DISPLAY DEVICE AND METHOD FOR RECOMMENDING CONTENT USING SAME

The present disclosure provides a display device comprising: a display unit for displaying a first content; a processor for executing a mirroring operation of displaying the first content on an external device; and a communication interface for receiving device identification information of the external device from the external device, wherein the processor generates first content reproduction information about the first content, and transmits the device identification information of the external device and the first content reproduction information to a content server through the communication interface. A display device comprises a display configured to display first content, a processor configured to perform a mirroring operation of displaying the first content on an external device and a communication interface configured to receive device identification information of the external device from the external device. The processor generates first content playback information of the first content and transmits the device identification information of the external device and the first content playback information to a content server through the communication interface.

TECHNICAL FIELD

The present disclosure relates to a display device and, more particularly, to a display device for providing a content recommendation service based on an external device when the display device performs mirroring to an external device.

BACKGROUND ART

Recently, a digital TV service using a wired or wireless communication network has come into wide use. The digital TV service may provide various services which cannot be provided by an existing analog broadcast service.

For example, an Internet protocol television (IPTV) service or a smart TV service which is a digital TV service provides interactivity for enabling a user to actively select a type of a program to be viewed, a viewing time, etc. The IPTV service or the smart TV service may provide various additional services, e.g., Internet search, home shopping, online games, etc. based on such interactivity.

In this way, a lot of diverse content has been produced and supplied recently. Therefore, the importance of a content recommendation service that can recommend content by identifying information about what types of content is being played on the display device the user is watching and identifying preferred content on the display device the user is watching is emerging.

In addition, as display devices become more popular, more and more households have multiple display devices. The type of preferred content for each display device may vary depending on the location, user, etc., and the importance of a service that can recommend content by identifying preferred content for each display device is increasing.

Meanwhile, the number of cases of watching content using mirroring services when there are multiple display devices is increasing. However, when mirroring content played from a first display device that plays content to a second display device, since information related to content playback is generated in the first display device, it is difficult to identify the preferred content in the second display device.

INVENTION

Technical Problem

An object of the present disclosure is to provide a content recommendation system for providing a content recommendation service for an external device, by transmitting and storing content playback information to and in a content server in association with device identification information of the external device when a display device mirrors content to the external device.

An object of the present disclosure is to provide a content recommendation system that allows an image quality, volume and preferred channel to be automatically set in an external device based on content setting information when content is mirrored to the external device in the future, by transmitting, to a content server, the content setting information such as image quality information, volume information and preferred channel information set during mirroring in association with device identification information of the external device when a display device mirrors content to the external device.

Technical Solution

A display device according to an embodiment of the present disclosure comprises a display configured to display first content, a processor configured to perform a mirroring operation of displaying the first content on an external device and a communication interface configured to receive device identification information of the external device from the external device. The processor generates first content playback information of the first content and transmits the device identification information of the external device and the first content playback information to a content server through the communication interface.

The display device according to the embodiment of the present disclosure includes the processor for generating first content setting information of the first content and transmitting the device identification information of the external device and the first content playback information to the content server through the communication interface.

The display device according to the embodiment of the present disclosure includes the processor for obtaining a content change command for changing the first content to second content, changing the first content to the second content in response to the content change command and performing a mirroring operation of displaying the second content on the external device

The display device according to the embodiment of the present disclosure includes the processor for generating second content playback information or second content setting information of the second content and transmitting at least one of the device identification information of the external device, the second content playback information or the second content setting information to the content server.

The display device according to the embodiment of the present disclosure includes the processor for obtaining the content change command from the external device through the communication interface

The display device according to the embodiment of the present disclosure includes the processor for transmitting the device identification information of the external device and a content recommendation request to the content server through the communication interface.

The display device according to the embodiment of the present disclosure includes the processor for receiving a recommendation content list recommended based on the device identification information of the external device from the content server through the communication interface and displaying the recommendation content list to mirror the list to the external device.

The display device according to the embodiment of the present disclosure includes the processor for receiving content setting information provided based on the device identification information of the external device from the content server through the communication interface and setting image quality of the first content based on image quality setting information included in the content setting information to mirror the first content to the external device.

The display device according to the embodiment of the present disclosure includes the processor for setting a volume of the first content based on volume setting information included in the content setting information to mirror the first content to the external device.

A content recommendation method according to an embodiment of the present disclosure comprises displaying first content, performing a mirroring operation of displaying the first content on an external device, receiving device identification information of the external device from the external device, generating first content playback information of the first content, and transmitting the device identification information of the external device and the first content playback information to a content server.

Effect of the Invention

According to an embodiment of the present disclosure, a content recommendation system may provide a content recommendation service for an external device, by transmitting and storing content playback information to and in a content server in association with device identification information of the external device when a display device mirrors content to the external device.

According to an embodiment of the present disclosure, the content recommendation system can determine preferred content from the external device even when the display device mirrors content to the external device.

According to an embodiment of the present disclosure, when the display device mirrors content to the external device, the preferred content settings in the external device can be identified based on content setting information received from the content server, and the image quality and volume of the mirrored content can be automatically set or the preferred channel of the external device may be automatically set.

BEST MODE

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.

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

Referring toFIG.1, a display device100may include a broadcast reception module130, an external device interface unit135, a storage unit140, a user input unit150, a control unit170, a wireless communication interface unit173, a display unit180, an audio output unit185, and a power supply unit190.

The broadcast reception module130may include a tuner131, a demodulator132, and a network interface133.

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

The demodulation unit132may divide the received broadcast signals into video signals, audio signals, and broadcast program-related data signals, and may restore the divided video signals, audio signals, and data signals into an output available form.

The network interface133may provide an interface for connecting the display device100to a wired/wireless network comprising internet network. The network interface133may 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.

The network interface unit133may access a predetermined webpage through an accessed network or another network linked to the accessed network. That is, the network interface unit133may transmit or receive data to or from a corresponding server by accessing a predetermined webpage through the network.

The network interface unit133may receive content or data provided from a content provider or a network operator. That is, the network interface unit133may receive content, such as movies, advertisements, games, VODs, and broadcast signals, which are provided from the content provider or the network operator, and information relating thereto through the network.

In addition, the network interface unit133may receive firmware update information and update files provided from the network operator, and may transmit data to the Internet or content provider or the network operator.

The network interface133may select and receive a desired application among applications open to the air, through network.

The external device interface unit135may receive an application or an application list in an adjacent external device and deliver the application or the application list to the control unit170or the storage unit140.

The external device interface unit135may provide a connection path between the display device100and an external device. The external device interface unit135may receive at least one of an image or audio outputted from an external device that is wirelessly or wiredly connected to the display device100and deliver the received image or the audio to the controller. The external device interface unit135may include a plurality of external input terminals. The plurality of external input terminals may include an RGB terminal, at least one High Definition Multimedia Interface (HDMI) terminal, and a component terminal.

An image signal of an external device inputted through the external device interface unit135may be outputted through the display unit180. A sound signal of an external device inputted through the external device interface unit135may be outputted through the audio output unit185.

An external device connectable to the external device interface unit135may 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.

Additionally, some content data stored in the display device100may be transmitted to a user or an electronic device, which is selected from other users or other electronic devices pre-registered in the display device100.

The storage unit140may store signal-processed image, voice, or data signals stored by a program in order for each signal processing and control in the control unit170.

In addition, the storage unit140may perform a function for temporarily storing image, voice, or data signals output from the external device interface unit135or the network interface unit133, and may store information on a predetermined image through a channel memory function.

The storage unit140may store an application or an application list input from the external device interface unit135or the network interface unit133.

The display device100may play content files (e.g., video files, still image files, music files, document files, application files, etc.) stored in the storage unit140, and may provide the content files to a user.

The user input unit150may transmit signals input by a user to the control unit170, or may transmit signals from the control unit170to a user. For example, the user input unit150may receive or process control signals such as power on/off, channel selection, and screen setting from the remote control device200or transmit control signals from the control unit170to the remote control device200according to various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, Radio Frequency (RF), and IR communication methods.

In addition, the user input unit150may transmit, to the control unit170, 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 by the control unit170may be input to the display unit180and displayed as images corresponding to the image signals. In addition, image signals that are image-processed by the control unit170may be input to an external output device through the external device interface unit135.

Voice signals processed by the control unit170may be output to the audio output unit185. In addition, voice signals processed by the control unit170may be input to the external output device through the external device interface unit135.

Additionally, the control unit170may control overall operations of the display device100.

In addition, the control unit170may control the display device100by a user command or an internal program input through the user input unit150, and may access the network to download a desired application or application list into the display device100.

The control unit170may output channel information selected by a user together with the processed image or voice signals through the display unit180or the audio output unit185.

In addition, the control unit170may 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 unit135, through the display unit180or the audio output unit185, according to an external device image playback command received through the user input unit150.

Moreover, the control unit170may control the display unit180to display images, and may control the display unit180to display broadcast images input through the tuner131, external input images input through the external device interface unit135, images input through the network interface unit, or images stored in the storage unit140. In this case, an image displayed on the display unit180may be a still image or video and also may be a 2D image or a 3D image.

Additionally, the control unit170may play content stored in the display device100, received broadcast content, and external input content input from the outside, and the content may 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 unit173may perform wired or wireless communication with an external device. The wireless communication unit173may perform short-range communication with an external device. For this, the wireless communication unit173may support short-range communication by using at least one of Bluetooth™, Bluetooth Low Energy (BLE), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (USB) technologies. The wireless communication unit173may support wireless communication between the display device100and a wireless communication system, between the display device100and another display device100, or between networks including the display device100and another display device100(or an external server) through wireless area networks. The wireless area networks may be wireless personal area networks.

Herein, the other display device100may 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 device100. The wireless communication unit173may detect (or recognize) a wearable device capable of communication around the display device100. Furthermore, if the detected wearable device is a device authenticated to communicate with the display device100, the control unit170may transmit at least part of data processed in the display device100to the wearable device through the wireless communication unit173. Therefore, a user of the wearable device may use the data processed by the display device100through the wearable device.

The voice acquisition unit175may acquire audio. The voice acquisition unit175may include at least one microphone (not shown) and may acquire audio around the display device100through the microphone (not shown).

The display unit180may convert image signals, data signals, or on-screen display (OSD) signals, which are processed in the control unit170, or images signals or data signals, which are received in the external device interface unit135, into R, G, and B signals to generate driving signals.

Furthermore, the display device100shown inFIG.1is just one embodiment of the present disclosure and thus, some of the components shown may be integrated, added, or omitted according to the specification of the actually implemented display device100.

That is, if necessary, two or more components may be integrated into one component, or one component may be divided into two or more components. 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, unlikeFIG.1, the display device100may receive images through the network interface unit133or the external device interface unit135and play them without including the tuner131and the demodulation unit132.

For example, the display device100may 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 content 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 may be performed by one of the display device described with reference toFIG.1, an image processing device such as the separated set-top box, and a content playback device including the display unit180and the audio output unit185.

The audio output unit185receives the audio-processed signal from the control unit170to output an audio signal.

The power supply unit190supplies the corresponding power to the entire display device100. Particularly, power may be supplied to the control unit170that is capable of being implemented in the form of a system on chip (SOC), the display unit180for displaying an image, the audio output unit185for outputting audio, and the like.

Specifically, the power supply unit190may include a converter that converts AC power to DC power and a DC/DC converter that converts a level of the DC power.

A remote control device according to an embodiment of the present disclosure will be described with reference toFIGS.2and3.

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

First, referring toFIG.2, a remote control device200may include a fingerprint recognition unit210, a wireless communication unit220, a user input unit230, a sensor unit240, an output unit250, a power supply unit260, a storage unit270, a control unit280, and a sound acquisition unit290.

Referring toFIG.2, the wireless communication unit220transmits/receives signals to/from an arbitrary any one of display devices according to the above-mentioned embodiments of the present disclosure.

The remote control device200may include a radio frequency (RF) module221capable of transmitting or receiving signals to or from the display device100according to an RF communication standard, and an IR module223capable of transmitting or receiving signals to or from the display device100according to an IR communication standard. In addition, the remote control device200may include a Bluetooth module225capable of transmitting or receiving signals to or from the display device100according to a Bluetooth communication standard. In addition, the remote control device200may include an NFC module227capable of transmitting or receiving signals to or from the display device100according to an NFC communication standard, and a wireless LAN (WLAN) module229capable of transmitting or receiving signals to or from the display device100according to a WLAN communication standard.

In addition, the remote control device200may transmit signals containing information on the movement of the remote control device200to the display device100through the wireless communication unit220.

Moreover, the remote control device200may receive signals transmitted from the display device100through the RF module221and if necessary, may transmit a command for power on/off, channel change, and volume change to the display device100through the IR module223.

The user input unit230may be configured with a keypad, a button, a touch pad, or a touch screen. A user may operate the user input unit230to input a command relating to the display device100to the remote control device200. If the user input unit230includes a hard key button, a user may input a command relating to the display device100to the remote control device200through the push operation of the hard key button. This will be described with reference toFIG.3.

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

The fingerprint recognition button212may be a button for recognizing a user's fingerprint. According to an embodiment of the present disclosure, the fingerprint recognition button212may perform a push operation and receive a push operation and a fingerprint recognition operation. The power button231may be a button for turning on/off the power of the display device100. The home button232may be a button for moving to the home screen of the display device100. The live button233may be a button for displaying live broadcast programs. The external input button234may be a button for receiving an external input connected to the display device100. The volume control button235may be a button for controlling a volume output from the display device100. The voice recognition button236may be a button for receiving user's voice and recognizing the received voice. The channel change button237may be a button for receiving broadcast signals of a specific broadcast channel. The OK button238may be a button for selecting a specific function, and the back button239may be a button for returning to a previous screen.

If the user input unit230includes a touch screen, a user may touch a soft key of the touch screen to input a command relating to the display device100to the remote control device200. In addition, the user input unit230may include various kinds of input interfaces operable 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 unit240may include a gyro sensor241or an acceleration sensor243. The gyro sensor241may sense information on the movement of the remote control device200.

For example, the gyro sensor241may sense information on an operation of the remote control device200on the basis of x, y, and z axes and the acceleration sensor243may sense information on a movement speed of the remote control device200. Moreover, the remote control device200may further include a distance measurement sensor that senses a distance with respect to the display unit180of the display device100.

The output unit250may output image or voice signals in response to the operation of the user input unit230, or may output image or voice signals corresponding to signals transmitted from the display device100. A user may recognize whether the user input unit230is operated or the display device100is controlled through the output unit250.

For example, the output unit250may include an LED module251for flashing, a vibration module253for generating vibration, a sound output module255for outputting sound, or a display module257for outputting an image, if the user input unit230is manipulated or signals are transmitted/received to/from the display device100through the wireless communication unit220.

Additionally, the power supply unit260supplies power to the remote control device200and if the remote control device200does not move for a predetermined time, stops the power supply, so that power waste may be reduced. The power supply unit260may resume the supply of power if a predetermined key provided at the remote control device200is operated.

The storage unit270may store various kinds of programs and application data required to control or operate the remote control device200. If the remote control device200transmits/receives signals wirelessly through the display device100and the RF module221, the remote control device200and the display device100transmits/receives signals through a predetermined frequency band.

The control unit280of the remote control device200may store, in the storage unit270, information on a frequency band for transmitting/receiving signals to/from the display device100paired with the remote control device200and refer to it.

The control unit280controls general matters relating to the control of the remote control device200. The control unit280may transmit a signal corresponding to a predetermined key operation of the user input unit230or a signal corresponding to the movement of the remote control device200sensed by the sensor unit240to the display device100through the wireless communication unit220.

In addition, the sound acquisition unit290of the remote control device200may acquire voice.

The sound acquisition unit290may include at least one microphone and acquire voice through the microphone.

FIG.4is a view illustrating an example of utilizing a remote control device according to an embodiment of the present disclosure.

FIG.4(a)illustrates that a pointer205corresponding to the remote control device200is displayed on the display unit180.

A user may move or rotate the remote control device200vertically or horizontally. The pointer205displayed on the display unit180of the display device100corresponds to a movement of the remote control device200. Since the corresponding pointer205is moved and displayed according to a movement on a3D space as show in the drawing, the remote control device200may be referred to as a spatial remote control device.

FIG.4(b)illustrates that if a user moves the remote control device200, the pointer205displayed on the display unit180of the display device100is moved to the left according to the movement of the remote control device200.

Information on a movement of the remote control device200detected through a sensor of the remote control device200is transmitted to the display device100. The display device100may calculate the coordinates of the pointer205from the information on the movement of the remote control device200. The display device100may display the pointer205to match the calculated coordinates.

FIG.4(c)illustrates that while a specific button in the remote control device200is pressed, a user moves the remote control device200away from the display unit180. Thus, a selected region in the display unit180corresponding to the pointer205may be zoomed in and displayed in an enlarged size.

On the other hand, if a user moves the remote control device200close to the display unit180, a selection area in the display unit180corresponding to the pointer205may be zoomed out and displayed in a reduced size.

On the other hand, if the remote control device200is moved away from the display unit180, a selection area may be zoomed out and if the remote control device200is moved closer to the display unit180, a selection area may be zoomed in.

Additionally, if a specific button in the remote control device200is pressed, recognition of a vertical or horizontal movement may be excluded. That is, if the remote control device200is moved away from or closer to the display unit180, the up, down, left, or right movement cannot be recognized and only the back and forth movement may be recognized. While a specific button in the remote control device200is not pressed, only the pointer205is moved according to the up, down, left or right movement of the remote control device200.

Moreover, the moving speed or moving direction of the pointer205may correspond to the moving speed or moving direction of the remote control device200.

Furthermore, a pointer in this specification means an object displayed on the display unit180in response to an operation of the remote control device200. Therefore, in addition to the arrow form displayed as the pointer205in 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 pointer205may be displayed in correspondence to one point of a horizontal axis and a vertical axis on the display unit180and also may be displayed in correspondence to a plurality of points such as a line and a surface.

Meanwhile, the control unit170may be referred to as a processor170. The wireless communication unit173may be referred to as a communication interface173. Also, the storage unit140may be referred to as a memory140.

FIG.5is a diagram illustrating a content server according to an embodiment of the present disclosure.

The content server300may provide a recommendation service that recommends content that a viewer using a display device100may prefer.

The content server300may include a communication interface310, a memory320and a processor330.

The content server300may transmit and receive data to and from at least one display device100through the communication interface310through wired/wireless communication.

The memory320may include a content information database321. The content information database321may store information related to content played on each device. For example, the content information database321may store content playback information, content setting information or application installation information in association with identification information of each device.

When receiving a content recommendation request from the display device100or an external device, the processor330may recommend content optimized for each device based on data stored in the content information database321.

FIG.6is a diagram illustrating a content recommendation system according to an embodiment of the present disclosure.

The content recommendation system10may include at least one display device100, at least one remote control device200and a content server300.

The processor170of the display device100may play content.

In addition, the processor170may generate content playback information of the played content. In addition, the processor170may generate content setting information, which is information about image quality, volume, and preferred channels set when playing the content.

The content playback information may include at least one of content identification information of the played content, content genre information, content playback start time information, content playback end time information or total content playback time information.

The content setting information may include at least one of image quality information set with respect to the content when playing content, volume information, or preferred channel information regarding whether a user has registered a channel providing the content as a preferred channel.

The processor170may transmit device identification information of the display device100, the generated content playback information, and the generated content setting information to the content server300through the communication interface173. The device identification information may be unique identification information to distinguish a device from other devices.

The content server300may store the content playback information and content setting information received from the display device100in the content information database321in association with the device identification information.

Meanwhile, the processor170may receive a content recommendation command through the user input interface unit150or the voice acquisition unit175.

When receiving the content recommendation command, the processor170may transmit the device identification information of the display device100and a content recommendation request to the content server300through the communication interface173.

The communication interface310of the content server300may receive the device identification information and the content recommendation request from the display device100.

The processor330of the content server300may obtain the content playback information and content setting information associated with the display device100from the content information database321based on the device identification information.

The processor330may generate content recommendation information and recommendation setting information for the display device100based on the content playback information and content setting information. The content recommendation information may include recommendation content identification information and recommendation content genre information of at least one recommendation content. In addition, the recommendation setting information may include recommendation image quality setting information and preferred channel information.

The processor330may transmit the content recommendation information and recommendation setting information to the display device100through the communication interface310.

The processor170may receive the content recommendation information and recommendation setting information from the content server300through the communication interface173.

The processor170may display at least one recommendation content based on the received content recommendation information. In addition, when a playback command for recommendation content is input through the user input interface unit150or the voice acquisition unit175, the processor170may set the image quality for the recommendation content to be played based on the received recommendation setting information and perform playback.

The recommendation content may be played by setting the image quality thereof, and when a change to a preferred channel is input from the user, the channel may be changed to the preferred channel based on the preferred channel information.

Meanwhile, the display device100may mirror the content being played to an external device. The external device may include another display device or a mobile device. In this case, the mirrored content may be viewed through the external device. Therefore, there is a need for viewing information of mirrored content to become basic data for recommending content to the external device.

Meanwhile, when the display device100performs a mirroring operation with an external device, a control command for controlling the display device100may be received from the external device. The control command may include a content change command that changes the content being played from the first content to the second content. When receiving a content change command, the display device100may play the changed content. In this case, there is a need for the display device100to transmit content playback information of the changed content to the content server300as information for content recommendation of an external device.

FIG.7is a diagram illustrating a content recommendation system according to an embodiment of the present disclosure.

The content recommendation system10may include a content server300that may store information about the content viewed by a user in conjunction with each of a plurality of display devices100_1and100_2and recommend content preferred in each of the display devices100_1and100_2among the plurality of content.

Meanwhile, the first content may be played on the first display device100_1. In addition, the first content played on the first display device100_1may be mirrored to the second display device100_2. The second display device100_2may display the mirrored first content through the display unit.

Meanwhile, in the conventional content recommendation system, when the first display device100_1is mirroring content to the second display device100_2, the first content is being played on the first display device100_1and thus the content playback information and content setting information of the first content may be stored in the content server300in association with the device identification information of the first display device100_1. However, since the first content is being mirrored and viewed by the user on the second display device100_2, the content playback information and content setting information of the first content needs to be stored in the content server300in association with the device identification information of the second display device100_2.

Accordingly, when mirroring the first content to the external device400, the first display device100_1may obtain device identification information of the external device400from the external device400.

FIG.8is a flowchart illustrating a process of operating a content recommendation system according to an embodiment of the present disclosure.

The processor170of the display device100may generate first content information of the first content. The first content information may include at least one of first content playback information or first content setting information. The first content playback information may include at least one of content identification information, content genre information, content playback start time information, content playback end time information or total content playback time information of the first content being played. When the first content is played, the first content setting information may include at least one of image quality information set with respect to the first content, volume information, or preferred channel information regarding whether the user has registered a channel providing the content as a preferred channel.

Meanwhile, the processor170of the display device100may generate first content playback information of the first content (S802). The display device100may generate and store the first content playback information of the first content from the start of playback of the first content until the playback ends.

In addition, the processor170of the display device100may generate first content setting information of the first content (S803). The display device100may generate and store image quality information, volume information, and preferred channel information that are set when the first content is played.

Meanwhile, the processor170of the display device100may transmit the first device identification information, first content playback information, and first content setting information of the display device100to the content server300through the communication interface173(S804). The first device identification information may be unique identification information of the display device100that allows the display device100to be distinguished from other devices.

Meanwhile, the communication interface310of the content server300may receive first device identification information, first content playback information and first content setting information from the display device100.

In addition, the processor330of the content server300may store the first content playback information and the first content setting information in the content information database321in association with the first device identification information.

Meanwhile, the display device100may receive a mirroring operation command from the external device400(S806). The mirroring operation may refer to an operation of capturing a screen displayed on the display device100at a predetermined period and transmitting the captured image to a mirroring target device.

Meanwhile, the external device400may display the mirrored first content (S808).

The external device400may include not only the display device but also various electronic devices such as smartphones or tablets.

In addition, the external device400may transmit the second device identification information of the external device400to the display device100(S809). The second device identification information may be unique identification information that allows the external device400to be distinguished from other devices.

Meanwhile, when the external device400is a device capable of operating with multiple applications installed, application installation information including the application ID of each of the multiple applications installed in the external device400may be transmitted to the display device100.

Meanwhile, the communication interface173of the display device100may receive second device identification information. The processor170of the display device100may transmit the received second device identification information, first content generation information, and first content setting information to the content server300.

In this case, the processor170may generate or change first content setting information based on a time when mirroring of the first content to the external device400started, a time when mirroring ended, and a total mirroring time.

For example, the processor170may generate the time when mirroring of the first content to the external device400started as content playback start time information of the first content setting information. The processor170may generate the time when mirroring of the first content to the external device400ended as content playback end time information of the first content setting information. The processor170may generate the total time for which the first content was mirrored to the external device400as total content playback time information of the first content setting information. Accordingly, the processor170may generate information about how much the mirrored first content was preferred in the external device400, so that it can be used as basic data to recommend content for the external device400in the future.

In addition, the processor170may generate or change first content setting information based on image quality information and volume information set when the first content is mirrored to the external device400.

For example, the display resolutions of the display device100and the external device400may be different, and the volume of the speaker of the display device400and the speaker sound of the external device400may be different.

In this case, the user may change the image quality or volume of the first content mirrored through the display device100, the external device400, the first remote control device200_1, or the second remote control device200_2. In addition, the display device100may perform a mirroring operation on the first content based on the changed image quality information and volume information. Therefore, the first content setting information will be basic data that allows mirroring by automatically setting the image quality information and volume information for the external device400when the first content is mirrored to the external device400in the future.

Meanwhile, when the display device100receives the application installation information from the external device400, the application installation information may be transmitted to the content server300. Accordingly, the content server300may store the received application installation information in association with the second device identification information, and generate a recommendation application list based on the application installation information stored in association with the device identification information of the external device400even when mirrored from the display device100to the external device400. The recommendation application list may be transmitted to the display device100, and the display device100may mirror the recommendation application to the external device400.

Meanwhile, the display device100may transmit the second device identification information, the first content playback information, and the first content setting information to the content server300(S810).

The processor170of the display device100may transmit the received second device identification information, first content playback information, and first content setting information to the content server300through the communication interface173.

Meanwhile, the content server300may store the first content playback information and the first content setting information in the content information database321in association with the second device identification information (S811).

Meanwhile,FIG.9is a flowchart illustrating a process of operating a content recommendation system according to an embodiment of the present disclosure.

The external device400may display mirrored first content (S901).

Meanwhile, while the external device400displays the mirrored first content, the user may input a content change command to change the first content to second content using the remote control device200. The remote control device200may include a first remote control device200_1that remotely controls the display device100or a second remote control device200_2that remotely controls the external device400.

When receiving the content change command, the remote control device200may transmit the content change command to the external device400or the display device100(S902).

When the remote control device200transmits the content change command to the external device400, the external device400may transmit the received content change command to the display device100(S903). For example, when the external device400is linked to the display device100through a UIBC (User Input Back Channel), the external device400may transmit the received content change command to the display device100through the UIBC.

Meanwhile, the display device100may receive the content change command from the remote control device200or the external device400(S904). For example, the user input interface unit150of the display device100may directly receive the content change command from the remote control device200. In addition, the content change command may be received from the external device400through the communication interface173of the display device100.

Meanwhile, the processor170of the display device100may change the first content to the second content in response to the received content change command (S905). In addition, the processor170may display the changed second content on the display unit180.

In addition, the processor170of the display device100may perform a mirroring operation of displaying the second content on the external device400(S906). The external device400may display the mirrored second content (S907). In addition, the external device400may transmit the second device identification information of the external device400to the display device100(S908).

In addition, the processor170of the display device100may transmit second device identification information, second content playback information, and second content setting information to the content server (S909).

Meanwhile, the content server300may store the second content playback information and the second content setting information in the content information database321in association with the second device identification information (S910).

Meanwhile,FIG.10is a flowchart illustrating a process of operating a content recommendation system according to an embodiment of the present disclosure.

During the mirroring operation, the display device100may receive a content recommendation command from the external device400through the communication interface173during the mirroring operation or may receive a content recommendation command through the user input interface unit150.

The communication interface310of the content server300may receive device identification information and a content recommendation request from the display device100(S1001). For example, when the display device100performs mirroring with the external device400, the device identification information may be the device identification information of the external device400.

The processor330of the content server300may obtain at least one of content playback information, content setting information, or application installation information stored in association with device identification information received from the content information database321.

The processor330of the content server300may generate a recommendation content list including at least one recommendation content based on the obtained content playback information.

The processor330of the content server300may transmit at least one of the recommendation content list, content setting information, or application installation information to the display device100through the communication interface310.

The processor170of the display device100may display recommendation content on the display unit180based on the recommendation content list received through the communication interface173. The displayed recommendation content may be mirrored to the external device400.

In addition, the processor170may set the image quality and volume of the mirrored content based on the received content setting information. In addition, when receiving a preferred channel change command from the external device400, the processor170may change to the preferred channel based on the received content setting information and mirror the content provided in the changed channel to the external device400.

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

Therefore, the embodiments of the present disclosure are not intended to limit the technical spirit of the present disclosure but to illustrate the technical idea of the present disclosure, and the technical spirit of the present disclosure is not limited by these embodiments.

The scope of protection of the present disclosure should be interpreted by the appending claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present disclosure.