KR20110117900A - A digital broadcast receiver and method for providing a search service - Google Patents

Abstract

Disclosed are a digital broadcast receiver and a search service providing method. The display unit displays the content on the screen. The interface unit receives a signal for requesting a search service. The controller controls to display at least one search word related to the displayed content in response to the input signal on the screen on which the content is displayed, and to display the searched result based on the selected search word among the displayed search words.

Description

A digital broadcast receiver and method for providing a search service}

The present invention relates to a digital broadcast receiver and a service providing method, and more particularly, to a digital broadcast receiver and a search service providing method for providing an information retrieval function.

The broadcasting receiver transmits content produced by a broadcaster through a radio wave transmission medium such as terrestrial, cable, or satellite broadcasting, and the user is serviced by viewing through a receiver capable of receiving the respective delivery media.

However, as digital-based digital broadcasting technology has been developed and commercialized in existing analog broadcasting, real-time broadcasting, contents on demand, games, and news using Internet networks connected to homes in addition to existing radio waves or wired cable media. It is now possible to provide a variety of content services to the user.

An example of providing a content service using the Internet network is IPTV (Internet Protocol TV). The IPTV transmits various information services, video contents, and broadcasts through an internet network and provides them to the receiver of the user. The Internet network may be implemented on various types of networks such as an optical cable network, a coaxial cable network, a fiber to the home (FTTH), a telephone network, and a wireless network based on an Internet Protocol (IP).

In the case of the service using the Internet network as described above, unlike general terrestrial broadcasting, the interactivity may be added, and the user may watch a content service that he / she wants to see at a convenient time.

As various broadcasting services are provided, the information is displayed on a TV screen when providing information on the broadcasting service to a user of the broadcasting receiver, or when setting or changing the setting and request for the broadcasting service, display setting, audio setting, or the like. It uses a method using on-screen display (OSD).

An object of the present invention is to provide a digital broadcast receiver and a search service providing method for a user to search for information.

In order to achieve the above technical problem, the search service providing method according to the present invention comprises the steps of: displaying content on a display screen; receiving a signal for requesting a search service; corresponding to the input signal on the display screen Displaying at least one search word related to the content, receiving at least one search word among the displayed search words, and displaying a searched result based on the selected search word.

Preferably, the search word may be arranged and displayed in a rotating plate shape.

Preferably, the search word may be displayed transparently so that the image of the content is visible.

Preferably, the search service providing method may further include detecting an initial search word from metadata related to the content, and obtaining the search word based on the detected initial search word.

Preferably, the search word may be a related search word having a predetermined rank or higher among related search words provided by a search server.

Preferably, displaying the search results may include displaying a search list on the display screen, and displaying a web page associated with a selected search item based on the displayed search list.

Preferably, the search list may be displayed in a graphic user interface window that is displayed transparently so that an image of the content is visible.

In order to achieve the above technical problem, a digital broadcast receiver according to the present invention includes a display unit for displaying content on a screen, an interface unit for receiving a signal for requesting a search service, and the screen, corresponding to the input signal. And controlling to display at least one search word related to the content, and to display a searched result based on a selected search word among the displayed search words.

Preferably, the search word may be arranged and displayed in a rotating plate shape.

Preferably, the search word may be displayed transparently so that the image of the content is visible.

Preferably, the controller may detect an initial search word from metadata related to the content and control to obtain the search word based on the detected initial search word.

Preferably, the search word may be a related search word having a predetermined rank or higher among related search words provided by a search server.

Preferably, the controller may control to display a search list as the searched result on the screen, and to control to display a web page associated with the selected search item based on the displayed search list.

Preferably, the search list may be displayed in a graphic user interface window that is displayed transparently so that an image of the content is visible.

According to the digital broadcast receiver and the search service providing method according to the present invention, since a search word associated with the displayed content is provided, the user may search for information associated with the displayed content without inputting a separate search word.

1 is a diagram schematically showing an IPTV system according to an embodiment of the present invention;
2 is a diagram illustrating a hierarchical structure for broadcasting a Content Download Service (CDS) of IPTV;
3 is a block diagram showing the configuration of a preferred embodiment of the information retrieval system according to the present invention;
4 is a block diagram showing the configuration of a preferred embodiment of a digital broadcast receiver according to the present invention;
FIG. 5 is a diagram illustrating an embodiment of a screen displaying a related search word notification while content is displayed; FIG.
FIG. 6 is a diagram illustrating an embodiment of a screen displaying a related search word while content is displayed; FIG.
FIG. 7 is a diagram illustrating an embodiment of a screen in which a specific related search word is selected among the displayed related search words; FIG.
8 illustrates an embodiment of a screen displaying a search notification message;
9 is a diagram illustrating an embodiment of a screen on which a search list is displayed;
10 is a diagram illustrating an embodiment of a screen on which a web page is displayed;
FIG. 11 is a flowchart illustrating a preferred embodiment of a method for providing a search service according to the present invention; FIG.
12 is a view showing a process of performing an embodiment of a method for providing a related search word according to the present invention; and
FIG. 13 is a flowchart illustrating a preferred embodiment of a method for displaying a search result according to the present invention. Referring to FIG.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described. At this time, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, by which the technical spirit of the present invention and its core configuration and operation is not limited.

The terms used in the present invention have been selected as widely used general terms as possible in consideration of the functions in the present invention, but may vary according to the intention or custom of the person skilled in the art or the emergence of new technologies. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, it is intended that the terms used in the present invention should be defined based on the meanings of the terms and the general contents of the present invention rather than the names of the simple terms.

The digital broadcast receiver refers to a broadcast receiver capable of receiving digital broadcast transmitted by digital video and audio signals. Here, unlike conventional analog broadcasting, digital broadcasting refers to a broadcasting technology capable of two-way operation, reproduction, and accumulation because the television signal is compressed and exported in a digital form that encodes and records information signals. Compared to analog broadcasting, such digital broadcasting is more resistant to noise, has a lower data loss, and transmits additional error correction information, which is advantageous for error correction, and provides a high resolution and clear picture. In addition, unlike analog broadcasting, digital broadcasting is an interactive service capable of receiving a broadcasting service from a broadcasting station and providing information to the broadcasting station.

In the present invention, the digital broadcast is used as a concept that includes not only broadcasts transmitted through terrestrial waves, satellites and cables, but also broadcasts transmitted through Internet networks. That is, digital broadcasting is defined as a concept including IP (Internet Protocol) broadcasting.

In addition, in the present invention, the digital broadcast receiver includes a broadcast receiver capable of providing an Internet service to a viewer. The Internet service includes content services such as CoD (Content's on Demand), YouTube service, weather, news, local information and search, entertainment services such as games and karaoke, TV mail, and TV SMS (Short Message Service). This means a service that can be provided through the Internet. Accordingly, in the present invention, the digital broadcast receiver includes a network TV, a web TV and a broadband TV. In addition, the broadcast service may include an internet service as well as a broadcast service provided through terrestrial, satellite, and cable.

There may be various system architectures for transmitting digital broadcasts. For example, an Internet Protocol TV (IPTV) system is a system capable of providing various contents using an Internet network, and may be largely composed of a server, a network, and a client.

The servers of the IPTV are servers that perform various functions such as service discovery and selection server, streaming server, contents guide information server, customer information server, and payment information server. It can be configured as.

Among the servers, the streaming server transmits video data encoded in the stored Moving Picture Experts Group (MPEG) 2, MPEG4, etc. to the user through a network. As a protocol for the transmission, a Real-Time Transport Protocol (RTP), a RTP Control Protocol (RTP), or the like may be used.

In case of using Real-Time Streaming Protocol (RTSP), video stream playback can be controlled to some extent through a function called network trick play such as pause, replay, and stop. . The protocols are one example and other real time transmission protocols may be used depending on the implementation.

The content guide information server is a server that provides information on the various contents provided. The content guide information is information corresponding to electronic program guide (EPG) information and includes various information about content. The content guide information server stores content guide information data, and provides the stored data to the receiver.

The information server related to service discovery and selection among the servers provides the receiver with access information, playback information, and the like, for the servers providing various content services such as broadcasting, contents on demand (COD), and games.

The network system consists of an internet based network and gateways. The Internet-based network may use various types of networks such as an optical cable network, a coaxial cable network, a fiber to the home (FTTH), a telephone network, a wireless network, and the like based on IP. In addition to general data transfer, the gateway may perform multicast group management and quality of service (QoS) management using protocols such as Internet Group Management Protocol (IGMP).

A receiver of an IPTV is a receiver capable of receiving data transmitted through an internet network and providing the same to a user. The receiver includes an IPTV settop, a homenet gateway, an IPTV embedded TV, and the like.

In the case of a hybrid IPTV system, various contents of the Internet may be provided as well as various existing broadcasting contents. That is, the user can provide various broadcasting contents such as terrestrial broadcasting, cable broadcasting, satellite broadcasting, personal broadcasting, various internet video contents, data contents other than video, and the like. The contents may be provided in real time or may be provided on demand.

1 is a diagram schematically showing an IPTV system according to an embodiment of the present invention.

Referring to FIG. 1, in terms of providing a content service, the IPTV system may be divided into a content provider (CP), a service provider (SP), a network provider (NP), and a user. have.

The content provider produces and provides various contents. As shown in FIG. 1, the content provider includes a terrestrial broadcaster, a cable SO, or a MSO, a satellite broadcaster, and an internet broadcaster. (Internet broadcaster) and the like.

The service provider provides a service package of contents provided by the content provider. For example, the service provider of FIG. 1 packages a first terrestrial broadcast, a second terrestrial broadcast, a cable MSO, satellite broadcast, various Internet broadcasts, and provides the same to a user.

The network provider provides a network for providing the service to the user. The user may build a home network end user (HNED) to receive the service.

Conditional access, content protection, or the like may be used as a means for protecting the content transmitted from the IPTV system. As one example for the above-mentioned restriction reception or content protection, a method such as a cable card or a downloadable conditional access system (DCAS) may be used.

FIG. 2 illustrates a hierarchical structure for broadcasting a Content Download Service (CDS).

Referring to FIG. 2, the service provider delivers data contents for CDS to a digital broadcast receiver using a transmission protocol. The delivered data content for CDS is stored in the storage of the digital broadcast receiver. The stored data contents for CDS can be executed at the request of the user or the like. Here, the transport protocol may be FLUTE (File Delivery over Unidirectional Transport) mounted on ALC / LCT over IP / UDP, DVB-STP, DVB data / object carousel, File Transfer Protocol (FTP), HTTP (hypertext transfer). protocol) and the like, and the above-described protocol may use other transmission protocols as an example.

When FLUTE is used as the transport protocol, the presence or absence of a CDS service may be known to an IPTV receiver through service discovery and selection (SD & S), and the details of the content may include metadata in a TV Anytime format. Can be found through:

Data contents for CDS may include various types of contents such as A / V contents, data contents, and game contents.

As described above, the digital broadcast receiver of the present invention can be provided with various contents and can output the provided contents to the display screen according to the user's selection.

3 is a block diagram showing the configuration of a preferred embodiment of the information retrieval system according to the present invention.

Referring to FIG. 3, the information retrieval system 300 includes a metadata server 310, a search server 320, and a digital broadcast receiver 330. Here, the metadata server 310 may be a content provider and a service provider, and may be a content guide information server. In addition, the search server 320 may be a portal server that provides a search service on the Internet.

The metadata server 310 provides metadata to the digital broadcast receiver 330. When providing metadata, the metadata server 310 may transmit the metadata in a push method or a pull method. The metadata includes electronic program guide (EPG) data, electronic service guide (ESG) data, and electronic cinema guide (ECG) data. In addition, the metadata may be service information.

The search server 320 provides a related search word to the digital broadcast receiver 330. The related search term refers to a search term or a similar search term related to the input search term. The search server 320 may provide the digital broadcasting receiver 330 with a related search word having a search rank above a specific search rank among related search words.

In addition, the search server 320 in the form of an Open Web Application programming interface (API) so that the digital broadcast receiver 330 can receive a related search term, the Uniform Resource Locator as shown in Example 1 below. ) Can be provided.

[Example 1]

static gchar * usrlRecmd = "http://openapi.broadcast.com/search?key=%s&query=%s&target=recmd&sort=sim"

When the digital broadcasting receiver 330 sends the URL of Example 1 to the http protocol, the search server 320 transmits the related search result to the digital broadcasting receiver 330. The related search result may be transmitted as a file described in at least one programming language of HyperText Markup Language (HTML), Extensible Markup Language (XML), Standard Generalized Markup Language (SGML), and Wireless Markup Language (WML).

The digital broadcast receiver 330 may receive the metadata in any one of unicasting, multicasting, and broadcasting. In addition, the digital broadcast receiver 330 may receive the metadata together with the corresponding content, receive the metadata before receiving the content, and receive the metadata after receiving the content.

The digital broadcast receiver 330 may calculate an initial search word from metadata associated with the displayed content. The displayed content may include broadcast content, internet video content, and data content, and may be provided in real time and on demand.

For example, when real-time broadcast content is being displayed, the digital broadcast receiver 330 checks information related to the displayed real-time broadcast content from the EPG data. The information related to the real-time broadcasting content may be a title, a director, an actor, a shooting location, a shooting date, a step, a genre, a writer, a summary of the story, and a broadcasting schedule of the real-time broadcasting content. The digital broadcast receiver 330 extracts a keyword from the identified information to calculate an initial search word.

The digital broadcast receiver 330 may provide the initial search word extracted to the search server 320 to receive the related search word. Herein, the digital broadcast receiver 330 may obtain a related search word using the http protocol. For example, in order to obtain a related search word for the calculated initial search word, the digital broadcasting receiver 330 inputs a user code as a key value in the URL of Example 1, inputs an initial search word calculated as a query value, and enters the URL. Is transmitted to the search server 320 according to the http protocol.

4 is a block diagram showing the configuration of a preferred embodiment of a digital broadcast receiver according to the present invention.

Referring to FIG. 4, the digital broadcast receiver 400 according to an embodiment of the present invention may include a separate tuner for receiving terrestrial broadcast, cable broadcast, satellite broadcast, and the like. However, in the present invention, for the convenience of description, the description will be made mainly on the part of processing the content transmitted using the Internet network.

The digital broadcast receiver 400 includes a network interface unit 402, an IP manager 404, a service delivery manager 406, a demultiplexer 408, a data decoder 410, a decoder 412, a display unit 416, an application. It includes a manager 418, a service information database unit 422, a service discovery manager 424, a service control manager 426, a metadata manager 428, and a content database unit 430.

The network interface unit 402 receives packets received from the network and transmits the packets to the network. That is, the network interface unit 402 receives an IP packet for delivering real time broadcast service, Internet service, and service information from a service providing server through a network. The broadcast data may include content, an update message indicating whether to update the content, metadata, service information data, and software code. In addition, the service information may include service information for the real-time broadcast service and service information for the Internet service.

The IP manager 404 is involved in packet transmission from the source to the destination for the packet received by the digital broadcast receiver 400 and the packet transmitted by the digital broadcast receiver 400. The IP manager 404 classifies the received packet to correspond to an appropriate protocol, and classifies the packet into a service delivery manager 406, a service discovery manager 424, a service control manager 426, and a metadata manager 428. Outputs

The service delivery manager 406 is responsible for controlling the received service data. For example, when controlling real-time streaming data, RTP / RTCP (Real-Time Transport Protocol / RTP Control Protocol) may be used. When transmitting the real-time streaming data using the RTP, the service delivery manager 406 parses the received data packet according to the RTP and transmits it to the demultiplexer 408 or the control of the service manager 420. As a result, the content is stored in the content database unit 430. The service delivery manager 406 controls the network reception information to be fed back to the server that provides the service using RTCP.

The demultiplexer 408 demultiplexes the received packet into audio, video, program specific information (PSI) data, and the like, and transmits the demultiplexer 408 to the decoder 412 and the data decoder 410, respectively.

The data decoder 410 decodes service information such as program specific information (PSI). That is, the data decoder 410 receives and decodes a demultiplexed PSI section, a program and service information protocol (PSIP) section, a service information (DVB-SI) section, and the like from the demultiplexer 408.

In addition, the data decoder 410 decodes the received sections to create a database of service information, and stores the database of the service information in the service information database unit 422.

The decoder 412 decodes the video data and the audio data received by the demultiplexer 408, and the decoded video and audio data are provided to the user through the display unit 416.

The application manager 418 manages the overall state of the digital broadcast receiver 400, provides a graphical user interface, and manages other managers. In addition, the application manager 418 may calculate an initial search term from metadata associated with the displayed content, and the application manager 418 may control to transmit the initial search term to the search server 320 to receive the related search term. . In addition, the application manager 418 may control to display the received related search word and control to display the searched result based on the selected related search word among the displayed related search words. For this purpose, the application manager 418 includes a user interface manager 419 and a service manager 420.

The user interface manager 419 provides a Graphic User Interface (GUI) for a user using an OSD (On Screen Display), etc., and receives a key input from the user to perform a receiver operation according to the input. For example, when the user interface manager 419 receives a key input for selecting a service from the user, the user interface manager 419 transmits the key input signal to the service manager 420. The graphical user interface may include a widget window and a search window. The widget window is a screen on which a service provided through the widget application is displayed, and the service provided by the widget application may be an internet service. Hereinafter, a service provided by the widget application is called a widget service. The search window may be any one of an on screen display (OSD) window and an application window, and may be a display window displayed by an application provided by a content provider.

The user may input a specific request signal by selecting a specific area on the graphic user interface displayed on the screen by using a direction key, confirmation key, and cancel key of the remote controller. For example, the user may input a search word selection signal by selecting a search word displayed in the search box.

The user interface manager 419 may receive a search service request signal, a search word selection signal, a search item selection signal, and a search function termination signal from the remote controller or the spatial remote controller. Here, the search service request signal, the search word selection signal, the search item selection signal, and the search function termination signal are input by pressing a hot key on the remote control or the space remote control, or when the pointer displayed on the screen is positioned on the display for inputting the corresponding signal. The selection key of the remote controller or the spatial remote controller may be pressed to input. In addition, when the pointer is positioned on the display for inputting the corresponding signal for a predetermined time or more, the search service request signal, the search word selection signal, the search item selection signal, and the search function termination signal may be regarded as input. In addition, when a display for inputting a corresponding signal is focused, when a selection key of a remote controller or a spatial remote controller is pressed, a search service request signal, a search word selection signal, a search item selection signal, and a search function termination signal may be input.

The information displayed on the graphical user interface may be stored in the content database unit 430, may be stored in the service information database unit 422, or may be received from a server.

The content database unit 430 may store authentication information about an Internet service list and an account of a server. Here, the Internet service list is a list including information about a content provider or a service provider that provides an Internet service. For example, the Internet service list may include at least one of a name of a server, access information of the server, and guide information about a service provided by the server. The access information of the server may be any one of an internet address and a uniform resource locator (URL).

The display unit 416 displays the content on the screen. In addition, the display unit 416 may display the widget window and the search window above the image of the content, and may display the widget window and the search window transparently so that the image of the content located below is visible. In addition, the display unit 416 displays an image generated by the browser on the screen.

The service manager 420 controls a manager associated with a service, such as a service delivery manager 406, a service discovery manager 424, a service control manager 426, and a metadata manager 428 and an IG-OITF client.

In addition, the service manager 420 creates a channel map of a general broadcast and selects a channel using the channel map according to a key input received from the user interface manager 419. The service manager 420 receives service information of a channel from the data decoder 410 and sets an audio / video packet identifier (PID) of the selected channel to the demultiplexer 408.

In addition, the service manager 420 controls to display a graphic user interface providing a service on the screen.

The service manager 420 may also execute a browser to process the received service. The browser may display the service information and control the content to be played back. Browsers can also run generic applications, applications associated with specific content. In addition, the browser may process and display a web page provided by the server on the screen, and receive and display service information from the server. The service information may be provided in the form of a web page from the server.

The service discovery manager 424 provides the information necessary to select a service provider that provides a service. Upon receiving a signal regarding channel selection from the service manager 420, the service discovery manager 424 uses the information to find a service.

The service control manager 426 is responsible for selecting and controlling a service. For example, if a user selects a live broadcasting service like the conventional broadcasting method, IGMP or RTSP is used. If a user selects a service such as VOD (Video On Demand), RTSP is used to select and control the service. Perform The RTSP protocol may provide a trick mode for real time streaming. In addition, the service control manager 426 may initialize and manage a session through the IMC gateway using an IP multimedia subsystem (IMS) or a session initiation protocol (SIP). The protocols are one embodiment, and other protocols may be used depending on implementation.

The metadata manager 428 manages metadata associated with a service and stores the metadata in the service information database unit 422.

The service information database unit 422 stores service information decoded by the data decoder 410, metadata managed by the metadata manager 428, and information necessary to select a service provider provided by the service discovery manager 424. . In addition, the service information database unit 422 may store setup data for the system.

The service information database unit 422 and the content database unit 430 may be implemented using nonvolatile memory (NVRAM) or flash memory, respectively. The service information database unit 422 and the content database unit 430 may be logically divided into two areas on the same storage area. Can be implemented.

The content database unit 430 may store content controlled to be stored by a PVR manager (not shown). The PVR manager collects metadata related to the stored content and generates additional information (thumbnail images, etc.) used for user use.

FIG. 5 is a diagram illustrating an embodiment of a screen displaying a related search word notification while content is displayed.

Referring to FIG. 5, when a related search term is received from a server while content is being displayed, the application manager 418 displays the related search term notification 510. The related search word notification 510 may be displayed as an icon, such as the screen 500. In addition, the application manager 418 may display a message indicating that an associated search term has been received instead of the icon.

FIG. 6 is a diagram illustrating an embodiment of a screen on which a related search word is displayed while content is displayed.

Referring to FIG. 6, upon receiving a search service request signal, the application manager 418 displays, on the screen 600, associated search word selection marks 611 to 618 for selecting a related search word. Here, the related search term selection marks 611 to 618 display the corresponding related search word. If the relevant search term selection mark 617 is selected, the related search term 'Iris Music Video' displayed in the related search term choice mark 617 is selected.

As in the screen 600, the related search word selection display (611 to 618) may be arranged and displayed in the form of a rotating plate to each other. In addition, according to the moving key signal, the associated search word selection display may be moved in any one direction of up, down, right and left directions. For example, when the related search word selection display moves upward, the related search word selection display 611 disappears, and the related search word selection display 612 is positioned in place of the related search word selection display 611.

Associated search term selection marks 611-618 may be displayed on the graphical user interface 610. Here, the graphical user interface 610 may be any one of a widget window, an OSD window, and an application window, and as illustrated in FIG. 6, the outer shell may be displayed in a circular shape. In addition, the graphical user interface 610 and the related search term selection marks 611 to 618 may be transparently displayed so that an image of the content displayed on the screen 600 is visible. Accordingly, the present invention can effectively present a search word to the user without disturbing the user's viewing of the image.

FIG. 7 is a diagram illustrating an embodiment of a screen in which a specific related search word is selected among the displayed related search words.

Referring to FIG. 7, the relevant search word selection display 714 on which the focus is located on the screen 700 may be highlighted and displayed. Also, if the user inputs a remote control direction key while the focus is located on the related search word selection mark 714, the graphical user interface 710 may rotate in a circle around the center axis to change the related search word selection mark on which the focus is located. have. If the user inputs an upward key of the remote controller, the graphical user interface 710 rotates upward, thereby placing the focus on the associated search word selection display 715. If the user inputs the down key of the remote controller, the graphical user interface 710 rotates downward, thereby placing the focus on the associated search word selection display 713.

When the related search word selection display 714 is highlighted, when a user presses a selection key of the remote controller, a search word selection signal may be input. When the search word selection signal is input, the application manager 418 may respond to the input search word selection signal. The search term indicated by the highlighted related search term selection display 714 may be treated as being selected.

8 is a diagram illustrating an embodiment of a screen displaying a search notification message.

Referring to FIG. 8, when the related search word selection is completed, a message 810 displaying the selected search word may be displayed. The message 810 indicates that "Akita Prefecture travel" and "Lee Byung-hun" were selected as the related search words.

When the user clicks the button 811, the search may be performed based on the selected related search words 'Akita Prefecture travel' and 'Lee Byung Hun'.

9 is a diagram illustrating an embodiment of a screen on which a search list is displayed.

Referring to FIG. 9, upon successfully receiving a search result from the search server 320, the application manager 418 displays a graphical user interface 910 on the screen 900 that displays the search result. Here, the graphical user interface 910 may be displayed transparently so that an image of the content displayed on the screen 900 is visible. Accordingly, the user can check the search list while watching the displayed content without interruption.

Graphical user interface 910 displays a search list. The search list displayed here may include at least one search item. In addition, the search item may be displayed as a title or summary information of the searched content and may be linked to a specific web page. In addition, the search items may be classified and displayed according to a specific classification. For example, the graphical user interface 910 may classify and display search items as 'Web', 'Cafe', and 'Blog', and on the screen 900, the search item 911 may belong to the web. have.

10 is a diagram illustrating an embodiment of a screen on which a web page is displayed.

Referring to FIG. 10, a search item selection signal may be input when the user selects any one search item from the search items displayed on the graphic user interface 910. In addition, when a search item selection signal is input, the display unit 416 may display a web browser 1010 displaying a web page associated with the selected search item. The web page associated with the selected search item may be a web page linked with the selected search item.

The web browser 1010 may be displayed in full screen, may be displayed on a portion of the screen, and may be displayed after being scaled according to a user selection signal. In addition, the web browser 1010 may be displayed simultaneously with the graphical user interface 910. In this case, whenever a search item displayed in the graphical user interface 910 is selected, a web page associated with the selected search item may be displayed in the web browser 1010.

11 is a flowchart illustrating a preferred embodiment of a method for providing a search service according to the present invention.

Referring to FIG. 11, the display unit 416 displays content (S1100). The displayed content may include broadcast content, internet video content, and data content, and may be provided in real time and on demand.

The application manager 418 checks whether a search service request signal is input (S1110).

When a search service request signal is input, the display unit 416 displays a search word (S1120). The search term may be an associated search word received from the search server 320. In addition, the related search word may be periodically received at a predetermined time interval.

The application manager 418 checks whether at least one search word among the displayed search terms is selected (S1130).

When the search word is selected, the application manager 418 displays a search result (S1140).

12 is a view showing a process of performing an embodiment of a method for providing a related search word according to the present invention.

Referring to FIG. 12, the network interface unit 402 receives metadata (S1200). The metadata includes electronic program guide (EPG) data, electronic service guide (ESG) data, and electronic cinema guide (ECG) data. In addition, the metadata may be service information.

The application manager 418 calculates a basic search term using the received metadata (S1205). Here, the application manager 418 may check the information related to the specific content among the received metadata and calculate a basic search word from the checked information. The information related to the specific content may be a title, a director, an actor, a shooting place, a shooting date, a step, a genre, a writer, a summary of the plot, and a broadcasting schedule of the specific content.

The application manager 418 controls to transmit the related search request message including the calculated basic search word (S1210). Here, the application manager 418 may control the search request message to be transmitted based on the HTTP protocol, and the search request message may be the URL of Example 1.

The application manager 418 checks whether an associated search term has been received (S1215). Here, the application manager 418 may check whether or not the related search word is received based on the response code number returned from the search server 320. For example, when the response code number is 200, it may be confirmed that the related search word has been received.

If the associated search word is not received, the application manager 418 compares the number of requests with the maximum number of requests (S1220). The maximum number of requests can be set by default and can be changed according to a user command. For example, when the maximum number of requests is set to 4, the related search word may be requested up to three times.

When the number of requests is not the maximum number of requests, the display unit 416 outputs a request failure message indicating that the related search word has not been received (S1225).

If the number of requests is smaller than the maximum number of requests, step S1210 is performed again.

When the related search word is received, the display unit 416 displays the related search word notification (S1230). Herein, the icon 510 illustrated in FIG. 5 may be displayed as the related search word notification.

The application manager 418 checks whether a search service request signal is input (S1235). If the search service request signal is not input, step S1205 may be performed again after a delay for a predetermined time.

When the search service request signal is input, the display unit 416 displays the associated search word (S1240). Herein, the display 416 may display the graphic user interface 610 illustrated in FIG. 6.

The application manager 418 checks whether the related search word is selected (S1245). Here, the user may select a related search word according to the method described above with reference to FIG. 7. If the associated search word is not selected, step S1205 may be performed again after a delay for a predetermined time.

When the related search word is selected, the display unit 416 displays the searched result based on the selected related search word (S1250). Before displaying the search result, the display unit 416 may first display the message 810 shown in FIG. 8.

FIG. 13 is a flowchart illustrating a preferred embodiment of a method for displaying a search result according to the present invention. Referring to FIG.

Referring to FIG. 13, the display unit 416 displays a search word in operation S1300. The search word displayed here may be a related search word.

The application manager 418 checks whether a search word is selected (S1305).

If the search word is selected, the application manager 418 requests a search based on the selected search word (S1310). The application manager 418 may control to transmit a search request message including the selected search word, and the search request message may be transmitted to the search server 320 based on the HTTP protocol. In addition, the search request message may be a URL.

The application manager 418 checks whether a search result has been received (S1315). Here, the application manager 418 may check whether or not the search result is received based on the response code number returned from the search server 320. For example, if the response code number is 200, the search result may be confirmed as being received, and if the value is anything other than 200, it may be confirmed that the search result has not been received.

If the search result is not received, the application manager 418 compares the number of searches with the maximum number of searches (S1320).

If the number of searches is not less than the maximum number of searches, the display unit 416 displays a search failure message indicating that the search has failed (S1325). The maximum number of searches can be set by default and can be changed according to user commands. For example, if the maximum number of searches is set to 4, the search may be requested up to three times.

If the number of searches is less than the maximum number of searches, step S1330 is performed.

When the search result is received, the display unit 416 displays the search list (S1330). The display unit 416 may display the graphical user interface 910 illustrated in FIG. 9.

The application manager 318 checks whether a search item is selected (S1335).

When the search item is selected, the display unit 416 displays a web page associated with the selected search item in operation S1340. Here, the display unit 416 may display the web browser 1010 illustrated in FIG. 10.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer apparatus is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission via the Internet) . The computer-readable recording medium may also be distributed to networked computer devices so that computer readable code can be stored and executed in a distributed manner.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the above-described specific preferred embodiments, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

Claims (14)

Displaying content on a display screen;
Receiving a signal for requesting a search service;
Displaying at least one search word related to the content in response to the input signal on the display screen;
Receiving at least one search word among the displayed search words; And
And displaying the searched result based on the selected search word. The method of claim 1,
The search word is arranged in the form of a rotating plate search service providing method characterized in that it is displayed. The method of claim 1,
The search word is displayed in a transparent manner so that the image of the content is visible. The method of claim 1,
Detecting an initial search word from metadata associated with the content; And
And acquiring the search word based on the detected initial search word. The method of claim 1,
The search word is a search service providing method, characterized in that the related search term or more than a predetermined rank among the related search words provided by the search server. The method of claim 1,
The displaying of the search result may include:
Displaying a search list on the display screen; And
Displaying a web page associated with a selected search item based on the displayed search list. The method of claim 1,
The search list is displayed in a graphical user interface window that is displayed transparently so that the image of the content is visible. A display unit displaying content on a screen;
An interface unit for receiving a signal for requesting a search service; And
And a controller configured to control to display at least one search word related to the content in response to the input signal and to display a searched result based on a selected search word among the displayed search words. Digital broadcast receiver. The method of claim 8,
The search word is a digital broadcast receiver, characterized in that arranged in the form of a rotating plate. The method of claim 8,
The search word is a digital broadcast receiver, characterized in that the transparent display so that the image of the content is visible. The method of claim 8,
The control unit,
And detecting an initial search word from metadata associated with the content and obtaining the search word based on the detected initial search word. The method of claim 8,
The search word is a digital broadcast receiver, characterized in that the related search word or more than a predetermined rank among the related search words provided by the search server. The method of claim 8,
The control unit,
And control to display a search list as the searched result on the screen, and to display a web page associated with a selected search item based on the displayed search list. The method of claim 8,
And the search list is displayed in a graphic user interface window displayed transparently so that an image of the content can be viewed.

Images