Patent Publication Number: US-RE49520-E

Title: Method for providing application menu in image display device, and image display device using same

Description:
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS 
     This application is a reissue application of U.S. Pat. No. 9,762,947, which issued based upon U.S. patent application Ser. No. 13/993,391, filed Aug. 13, 2013, which is a U.S. National Stage Application under 35 U.S.C. §371 of PCT Application No. PCT/KR2011/006639, filed Sep. 8, 2011, which claims priorty priority to U.S. Provisional Application Ser. No. 61/423,078, filed Dec. 14, 2010, and Korean Patent Application No. 10-2010-0136283, filed on Dec. 28, 2010. 
    
    
     TECHNICAL FIELD 
     The present invention relates to an image display device and a method of operating the image display device, and more particularly, to a method of operating the image display device capable of enhancing convenience of use of a user and an image display device therefor. 
     In particular, in managing various applications installed in an image display device, the present invention relates to a method of operating an image display device enabling a user to more conveniently select and execute an application in case of configuring selection menus of an application in the image display device and to an image display device therefor. 
     BACKGROUND ART 
     For instance, an image display device is a device equipped with a function of receiving and processing a broadcasting image that a user is able to watch. For instance, the image display device shows a broadcast selected by a user among broadcasting signals transmitted by a broadcasting station in a display. It is a current global trend that a broadcast is converting from an analog to a digital. 
     A digital broadcasting means a broadcasting transmitting digital images and audio signals. The digital broadcasting has less data loss since the digital broadcasting is strong on an external noise, is better at error correction, has higher resolution, and provides a clearer screen compared to an analog broadcasting. And, unlike the analog broadcasting, the digital broadcasting is able to execute a bidirectional service. 
     Meanwhile, a smart TV, which combines a function of an image display device and a function of a multimedia device, is recently getting the spotlight. 
     The smart TV corresponds to an intelligent terminal where such computer supporting functions as internet communication, information search, and the like are added to an image display device. The smart TV is equipped with a high-capacity of memory and a high-performance CPU (central processing unit) compared to a legacy image display device. And, the smart TV is embedded with an operating system (OS) to support execution of various applications, audio/data communication, PC (personal computer) interlocking, and the like. Unlike the legacy image display device, if the smart TV is used, it is able to freely use a service via the internet. In particular, one of the characteristics of the smart TV is to enable a user to install a preferred application in the smart TV in a manner of downloading the application from external. 
     And, due to the development of the operating system of the smart TV, a plurality of applications can be installed and executed in the smart TV. 
     Yet, as mentioned in the above, if various applications are installable in one image display device or various applications is installed in one image display device, it is difficult for the image display device of a prior art to identify that which application is appropriate for performing a needed operation, since it is difficult to identify the information on each of the applications. 
     Hence, if the various applications are available in an image display device as a result of solving the aforementioned problem of the image display device of a prior art, it is strongly required to have a method of checking the information on each of the applications and a method of executing an application in a manner of precisely selecting a necessary application and an image display device using the method. 
     DISCLOSURE OF THE INVENTION 
     Technical Objects 
     An object of the present invention is to provide a method of managing an application of an image display device capable of enhancing convenience of use of a user and an image display device using the method. 
     Another object of the present invention is to provide a method of providing an application menu, which enables a user to check information on applications available in an image display device and to precisely select an application for performing a preferred operation, and an image display device using the method. 
     Another object of the present invention is to provide a method of managing an application of an image display device capable of providing various user interfaces and an image display device using the method. 
     Technical Solution 
     To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, a method of providing an application menu of an image display device includes the steps of searching for an application available in the image display device, displaying a 1 st  application list containing a selection menu item of the searched application, and displaying an application key screen of at least one application among applications contained in the 1 st  application list. 
     To further achieve these and other advantages and in accordance with the purpose of the present invention, an image display device capable of executing an application includes an application management unit configured to search for an application available in the image display device, a menu generating unit configured to generate a 1 st  application list containing a selection menu item of the searched application, a key screen generating unit configured to generate an application key screen of at least one application among applications contained in the 1 st  application list, and a control unit configured to control the 1 st  application list and the key screen to be displayed. 
     Advantageous Effects 
     According to embodiment of the present invention, since an image display device can provide a user with an application menu including menu items for executing each application available in the image display device, the user can search and execute a preferred application precisely and easily. 
     According to embodiment of the present invention, a service provider (SP) or a contents provider (CP) can efficiently display an advertising screen in an application menu of an image display device without aversion of a user. 
     Meanwhile, according to a different embodiment of the present invention, since various user interfaces are provided for an image display device, convenience of use of a user can be enhanced. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG.  1    is a schematic diagram of an example of a whole broadcasting system including an image display device according to one embodiment of the present invention; 
         FIG.  2    is a schematic diagram of a different example of a whole broadcasting system including an image display device according to a different embodiment of the present invention; 
         FIG.  3    is a diagram of steps of receiving a channel information and the like in a manner that an image display device depicted in  FIG.  1    or  FIG.  2    accesses a service provider; 
         FIG.  4    is a diagram of an example of data used in the steps depicted in  FIG.  3   ; 
         FIG.  5    is a diagram showing in detail an example of an image display device depicted in  FIG.  1    or  FIG.  2   ; 
         FIG.  6    is a diagram showing in detail a different example of an image display device depicted in  FIG.  1    or  FIG.  2   ; 
         FIG.  7    and  FIG.  8    are diagrams showing a prescribed one among image display devices according to embodiments of the present invention in a manner of dividing the prescribed one into a set top box and a display device; 
         FIG.  9    is a diagram for explaining a process that a random one among image display devices according to embodiments of the present invention is communicating with the third devices; 
         FIG.  10    is an internal block diagram of a control unit depicted in  FIG.  6   ; 
         FIG.  11    is a diagram of an example of a platform structure of a random one among image display devices according to embodiments of the present invention; 
         FIG.  12    is a diagram of a different example of a platform structure of a random one among image display devices according to embodiments of the present invention; 
         FIG.  13    is a diagram of a method of controlling a remote control device controlling a random one among image display devices according to embodiments of the present invention; 
         FIG.  14    is an internal block diagram of a remote control device controlling a random one among image display devices according to embodiments of the present invention; 
         FIG.  15    is a diagram of a 1 st  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention; 
         FIG.  16    is a diagram of a 2 nd  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention; 
         FIG.  17    is a diagram of a 3 rd  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention; 
         FIG.  18    is a diagram of a 4 th  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention; 
         FIG.  19    is a flowchart for a method of providing an application menu of an image display device according to embodiment of the present invention; 
         FIG.  20    is a diagram of a display screen including an application menu according to embodiment of the present invention; 
         FIG.  21    is a diagram of a display screen including an application menu containing an advertising area according to embodiment of the present invention; 
         FIG.  22    is a diagram of a display screen including an application list control menu according to embodiment of the present invention; 
         FIG.  23    is a diagram of a display screen including an application list selection menu according to embodiment of the present invention; 
         FIG.  24    to  FIG.  25    are diagrams of display screen including an expanded key screen according to embodiment of the present invention; 
         FIG.  26    is a diagram of a display screen that a key screen of  FIG.  24    to  FIG.  25    is expanded to a full screen; 
         FIG.  27    to  FIG.  28    are diagrams of a display screen for a key screen including an application list according to embodiment of the present invention; 
         FIG.  29    is a diagram of a display screen including a key screen conversion menu according to embodiment of the present invention. 
     
    
    
     BEST MODE 
     In the following description, the present invention is explained in more detail with reference to the drawings. 
     A suffix ‘module’ and ‘unit’ for a composing element in the following description is simply used for clarity of writing the present specification. Thus, the ‘module’ and the ‘unit’ can be used in a manner of being mixed. 
     Meanwhile, an image display device described in the present specification corresponds to an intelligent image display device, which adds a computer supporting function to a broadcast receiving function for example. The image display device can be equipped with such an easy-to-use interface as a input device of a hand writing type, a touch screen, a spatial remote controller, or the like by adding the internet function as well as fulfilling a function of receiving a broadcast. And, the image display device may be able to perform such a function as e-mailing, web-browsing, banking, game or the like by accessing the internet and a computer with the help of a wired or wireless internet function. A standardized general-purpose operating system (OS) can be used for the aforementioned various functions. 
     Hence, an image display device described in the present invention can perform user-friendly various functions since various applications can be freely added or deleted on a general-purpose OS kernel for example. More specifically, the image display device may correspond to a network TV, a Hybrid Broadcast Broadband TV (HBBTV), a smart TV, and the like. In some cases, the image display device is applicable to a smart phone as well. 
     Moreover, although the embodiment of the present invention is explained in detail with reference to the following attached drawings and the contents written on the drawings, the present invention may be non-limited by the embodiments. 
     Although terminologies used in the present specification are selected from general terminologies used currently and widely in consideration of functions in the present invention, they may be changed in accordance with intentions of technicians engaged in the corresponding fields, customs, advents of new technologies and the like. Occasionally, some terminologies may be arbitrarily selected by the applicant(s). In this case, the meanings of the arbitrarily selected terminologies shall be described in the corresponding part of the detailed description of the invention. Therefore, terminologies used in the present specification need to be construed based on the substantial meanings of the corresponding terminologies and the overall matters disclosed in the present specification rather than construed as simple names of the terminologies. 
       FIG.  1    is a schematic diagram of an example of a whole broadcasting system including an image display device according to one embodiment of the present invention. 
     As shown in  FIG.  1   , a whole broadcasting system including an image display device according to one embodiment of the present invention can be classified into a content provider (CP)  10 , a service provider (SP)  20 , a network provider (NP)  30 , and a HNED  40 . The HNED corresponds to a client  100 , which is an image display device according to embodiment of the present invention for example. The client  100  corresponds to an image display device according to one embodiment of the present invention and the image display device corresponds to a network TV, a smart TV, an IPTV, or the like for example. 
     The content provider  10  produces a variety of content and provides them. As shown in  FIG.  1   , the content provider  10  may include a terrestrial broadcaster, a cable broadcast provider (cable SO (system operator) or MSO (multiple system operator)), a satellite broadcaster, an internet broadcaster, and the like. 
     And, the content provider  10  may be able to provide various applications as well as broadcasting content. This shall be described in detail later. 
     The service provider  20  may be able to provide the contents provided by the content provider  10  in a manner of packaging the contents. For instance, the service provider  20  in  FIG.  1    may be able to provide a user with a 1st terrestrial broadcast, a 2nd terrestrial broadcast, a cable MSO, a satellite broadcast, various internet broadcasts, applications, and the like in a manner of packaging the aforementioned broadcasts, applications and the like. 
     Meanwhile, the service provider  20  may be able to provide a service to a client side using a unicast or multicast scheme. The unicast scheme is a scheme to transmit a data in a manner of 1-to-1 between a transmitter and a receiver. For instance, in case of the unicast scheme, if a reception device makes a request for a data to a server, the server can transmit the data to the reception device according to the request. The multicast scheme is a scheme to transmit a data to a plurality of receivers of a specific group. For instance, a server may be able to transmit data to a plurality of reception devices, which are registered in advance, all at once. Hence, IGMP (internet group management protocol) and the like can be used for a multicast registration. 
     The network provider  30  may be able to provide a network to provide a service to a client  100 . The client  100  may get a service in a manner of establishing a home network end user (HNED). 
     As a means for protecting contents transmitted from the aforementioned image display device, conditional access, content protection, or the like can be used. As an example of the conditional access or the content protection, such a scheme as a cable card or a DCAS (downloadable conditional access system) can be used. 
     Meanwhile, the client  100  can also provide content via a network. In this case, unlike the aforementioned case, the client  100  may become a content provider and the content provider  10  may receive the content from the client  100 . If it is designed like the mentioned above, there exist a merit of bidirectional content service or data service. 
       FIG.  2    is a schematic diagram of a different example of a whole broadcasting system including an image display device according to a different embodiment of the present invention. 
     As shown in  FIG.  2   , an image display device  100  according to a different embodiment of the present invention is connected to a broadcasting network and an internet network. The image display device  100  corresponds to a network TV, a smart TV, a HBBTV, or the like for example. 
     And, for instance, the image display device includes a broadcasting interface  101 , a section filter  102 , an AIT filter  103 , an application data processing unit  104 , a broadcasting data processing unit  111 , a media player  106 , an internet protocol processing unit  107 , an internet interface  108 , and a runtime module  109 . 
     An AIT (application information table) data, a real-time broadcasting content, an application data, and a stream event are received via the broadcasting interface  101 . Meanwhile, the real-time broadcasting content can be named linear A/V content. 
     The section filter  102  performs a section filtering for 4 kinds of data received via the broadcasting interface  101  and transmits the AIT data, the linear A/V content, and the stream event &amp; application data to the AIT filter  103 , the broadcasting data processing unit  111 , and the application data processing unit  104 , respectively. 
     Meanwhile, non-linear A/V content and an application data are received via the internet interface  108 . The non-linear A/V content may correspond to an COD (content on demand) application for example. 
     The non-linear A/V content is transmitted to the media player  106  and the application data is transmitted to the runtime module  109 . 
     Moreover, as shown in  FIG.  2   , the runtime module  109  includes an application manager and a browser for example. The application manager controls a life cycle for an interactive application using an AIT data for example. And, the browser performs a function of indicating and processing the interactive application for example. 
       FIG.  3    is a diagram of steps of receiving channel information and the like in a manner that an image display device depicted in  FIG.  1    or  FIG.  2    accesses a service provider.  FIG.  3    is just an embodiment and a scope of right of the present invention may be non-limited to a method of  FIG.  3   . 
     A service provider performs a service provider discovery operation [S 301 ]. An image display device transmits a service provider (SP) attachment request signal [S 302 ]. If a SP attachment is completed, the image display device receives provisioning information [S 303 ]. Moreover, the image display device receives a master SI table from the service provider [S 304 ], receives a Virtual Channel Map table from the service provider [S 305 ], receives a Virtual Channel Description table from the service provider [S 306 ], and receives a Source table from the service provider [S 307 ]. 
     Detail description is as follows. 
     The service provider discovery may mean a process that service providers providing a service related to an IPTV search for a server providing information on a service of the service providers. 
     A method of finding an address list capable of receiving information (e.g., SP discovery information) on a SD (service discovery) server has 3 kinds as follows. First, it is able to use an address preconfigured in an image display device or an address configured by a manual operation of a user. Second, it is able to use a DHCP-based SP discovery method. Third, it is able to use a DNS SRV-based SP discovery method. And, the image display device accesses a server of the address obtained by one of the aforementioned 3 methods and then receives a service provider discovery record including information necessary for performing a service discovery according to a SP. And, the image display device performs a service discovery step using the service provider discovery record. These processes can be performed in a push mode or a pull mode. 
     The image display device performs a registration procedure (or service attachment procedure) in a manner of accessing an SP attachment server designated as an SP attachment locator of the SP discovery record. 
     Moreover, the image display device may perform a service authentication procedure after performing a separate authentication procedure by accessing an authentication service server of the SP designated as an SP authentication locator. 
     Meanwhile, a data transmitted to the image display device from the server after a successful service attachment procedure may have a form of a provisioning information table. 
     The image display device provides a data to the server in a manner of including an ID and location information of the image display device in the service attachment process and a service attachment server may be able to specify a service to which the image display device subscribed based on the data. Moreover, address information capable of obtaining service information, which is intended to receive by the image display device, is provided in a form of a provisioning information table. The address information corresponds to the attachment information of a master SI table. If the aforementioned method is used, it is easy to provide a customized service according to a subscriber. 
     The service information includes a master SI table record managing attachment information on a virtual channel map and version, a virtual channel map table providing a service list of a package form, a virtual channel description table including detail information of each channel, a source table including attachment information capable of accessing an actual service, and the like. 
       FIG.  4    is a diagram of an example of data used in the steps depicted in  FIG.  3   . 
       FIG.  4    is a diagram depicting  FIG.  3    in more detail. Relationship between data in SI is explained with reference to  FIG.  4    in the following description. 
     A Master SI table includes location information capable of receiving each virtual channel map and version information of each of the virtual channel maps. 
     Each of the virtual channel maps is uniquely identified by a virtual channel map identifier and a virtual channel map version indicates version information of the virtual channel map. If one of the tables, which are connected to each other from the master SI table in an arrow direction, is modified, a version of the corresponding table increases and versions of all upper tables (up to the master SI table) increase as well. Hence, by monitoring the master SI table, it may be able to check a change in a whole SI table right away. 
     For instance, if there is a change in the source table, a version of the source table increases. And, a version of the virtual channel description table, which references the source table, is modified as well. Hence, a change in a lower table causes a change in an upper table. Consequently, the version of the master SI table is modified. 
     Every service provider may have one Master SI table. Yet, in case that a service configuration varies according to a region or a subscriber (or subscriber group), it is designed for the service provider to get a plurality of master SI tables to provide a customized service according to each unit. If it is designed like the mentioned above, a customized service suitable for a region of a subscriber, subscription information, and the like can be efficiently provided. 
     The virtual channel map table may have at least one virtual channel. The virtual channel map table does not include detail information on a channel in a virtual channel map but includes location information capable of obtaining the detail information. A virtual channel description location of the virtual channel map table informs a location of a description table of a virtual channel description table, which includes the detail information on the channel. 
     The virtual channel description table includes detail information of a virtual channel and may be able to access the virtual channel description table using the virtual channel description location of the virtual channel map table. 
     The source table provides attachment information (e.g., an IP address, a port, an AV codec, a transmission protocol, etc.) necessary for accessing an actual service according to a service. 
     The aforementioned master SI table, the virtual channel map table, the virtual channel description table, and the source table are logically delivered via 4 divided flows and can be performed in a push mode or a pull mode. Meanwhile, the master SI table can be transmitted by a multicast scheme for a version management and monitors a version change in a manner of receiving a multicast stream. 
       FIG.  5    is a diagram showing in detail an example of an image display device depicted in  FIG.  1    or  FIG.  2   . Yet, the diagram depicted in  FIG.  5    is just an embodiment and a scope of right of the present invention should be determined not by  FIG.  5    but by a scope of a request for a patent. 
     An image display device  700  includes a network interface  701 , a TCP/IP manager  702 , a service delivery manager  703 , a demultiplexer (Demux)  705 , a PSI&amp; (PSIP and/or SI) decoder  704 , an audio decoder  706 , a video decoder  707 , a display unit (display A/V and OSD module)  708 , a service control manager  709 , a service discovery manager  710 , a metadata manager  712 , an SI &amp; metadata DB  711 , an UI manager  714 , and a service manager  713 . 
     The network interface unit  701  receives packets received from a network and transmits a packet to the network. In particular, the network interface unit  701  receives a service, contents, and the like from a service provider via the network. 
     The TCP/IP manager  702  controls a packet delivery for a packet received by the image display device and the packet transmitted by the image display device, in particular, controls the packet delivery from a source to a destination. And, the TCP/IP manager  702  classifies the received packet to correspond to an appropriate protocol and outputs packets classified into the service delivery manager  705 , the service discovery manager  710 , the service control manager  709 , and the metadata manager  712 . 
     The service delivery manager  703  is in charge of controlling a received service data. For instance, in case of controlling a real-time streaming data, the service delivery manager may use an RTP/RTCP. In case of transmitting the real-time streaming using the RTP, the service delivery manager  703  transmits the received data packet to the demultiplexer  705  in a manner of parsing the data packet according to the RTP or stores the received data packet in the SI &amp; metadata DB  711  according to a control of the service manager  713 . And, the service delivery manager feedbacks the network reception information to a server side, which provides a service, using the RTCP. 
     The demultiplexer  705  demultiplexes the received packet into an audio, a video, a PSI (program specific information) data, and the like and then transmits the audio, the video, the PSI (program specific information) data to the audio/video decoder  706 / 707 , the PSI&amp; (PSIP and/or SI) decoder  704 , respectively. 
     The PSI&amp; (PSIP and/or SI) decoder  704  decodes such service information as a PSI (program specific information), and the like. In particular, the PSI&amp; (PSIP and/or SI) decoder  704  receives a demultiplexed PSI section, a PSIP (program and service information protocol) section, an SI (service information) section, or the like from the demultiplexer  705  and then decodes the demultiplexed PSI section, the PSIP (program and service information protocol) section, the SI (service information) section, or the like. 
     And, the PSI&amp; (PSIP and/or SI) decoder  704  makes a DB for service information in a manner of decoding the received sections and stores the DB for the service information in the SI &amp; metadata DB  711 . 
     The audio decoder and video decoder  706 / 707  decode a video data and an audio data received from the demultiplexer  705 . The audio data decoded by the audio decoder  706  and the video data decoded by the video decoder  707  are provided to a user via the display unit  708 . 
     The UI manager  714  and the service manager  713  manage overall state of the image display device  700 , provide a user interface, and manage a different manager. 
     The UI manager  714  provides a GUI (graphic user interface) for a user using an OSD (On Screen Display) and the like, receives a key input from the user, and performs a receiver operation according to the input. For instance, if the UI manager receives a key input for a channel selection, the UI manager transmits the key input signal to the service manager  713 . 
     The service manager  713  controls such managers relevant to a service as the service delivery manager  703 , the service discovery manager  710 , the service control manager  709 , the metadata manager  712 , and the like. 
     And, the service manager  713  makes a channel map and selects a channel using the channel map according to the key input received from the user interface manager  714 . And, the service manager  713  receives service information of the channel from the PSI&amp; (PSIP and/or SI) decoder  704  and then configures audio/video PID (packet identifier) of the selected channel in the demultiplexer  705 . 
     The service discovery manager  710  provides information necessary for selecting a service provider providing a service. If a signal for a channel selection is received from the service manager  713 , the service discovery manager  710  finds a service using the information. 
     The service control manager  709  is in charge of selecting and controlling a service. For instance, if a user selects such a legacy broadcasting scheme as a live broadcasting service, the service control manager uses IGMP or RTSP. If the user selects such a service as a VOD (video on demand), the service control manager performs selecting and controlling a service using the RTSP. The RTSP protocol can provide a trick mode for a real-time streaming. And, the service control manager  709  can initialize and manage a session going through an IMC gateway using an IMS (IP multimedia subsystem) and a SIP (session initiation protocol). The protocols are just one embodiment. Different protocols can be used according to an implementation case. 
     The metadata manager  712  manages a metadata relevant to a service and stores the metadata in the SI &amp; metadata DB  711 . 
     The SI &amp; metadata DB  711  stores the service information decoded by the PSI&amp; (PSIP and/or SI), the metadata managed by the metadata manager  712 , and the information necessary for selecting a service provider provided by the service discovery manager  710 . And, the SI &amp; metadata DB  711  can store a setup data for a system and the like. 
     The SI &amp; metadata DB  711  can be implemented using a non-volatile RAM (NVRAM), a flash memory, or the like. 
     Meanwhile, the IG  750  is a gateway including functions necessary for approaching an IMS-based IPTV service. 
       FIG.  6    is a diagram showing in detail a different example of an image display device depicted in  FIG.  1    or  FIG.  2   . 
     Referring to  FIG.  6   , an image display device  100  according to one embodiment of the present invention can include a broadcasting receiving unit  105 , an external device interface unit  135 , a storing unit  140 , a user input interface unit  150 , a control unit  170 , a display unit  180 , an audio output unit  185 , a power supply unit  190 , and an image taking unit (not depicted). The broadcasting receiving unit  105  can include a tuner  110 , a demodulating unit  120 , and a network interface unit  130 . Of course, it is able to design the image display device to be equipped with the tuner  110  and the demodulating unit  120  without the network interface unit  130 . On the contrary, it is also possible to design the image display device to be equipped with the network interface unit  130  without the tuner  110  and the demodulating unit  120 . 
     The tuner  110  selects a channel selected by a user or an RF broadcasting signal corresponding to all preconfigured channels among RF (radio frequency) broadcasting signals received by an antenna. And, the tuner converts the selected RF broadcasting signal into an intermediate frequency signal, baseband image, or an audio signal. 
     And, the tuner  110  can receive an RF broadcasting signal of a single carrier according to an ATSC (Advanced Television System Committee) scheme or an RF broadcasting signal of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme. 
     The demodulating unit  120  performs a demodulation operation by receiving a digital IF signal (DIF) converted in the tuner  110 . 
     For instance, if a digital IF signal outputted from the tuner  110  corresponds to the signal of the ATSC scheme, the demodulating unit  120  performs an 8-VSB (8-vestigal side band) demodulation for example. And, the demodulating unit  120  may perform a channel decoding. To this end, the demodulating unit  120  can perform a Trellis decoding, de-interleaving, and Reed Solomon decoding in a manner of installing a Trellis decoder, a de-interleaver, a Reed Solomon decoder, and the like. 
     After performing a demodulation and a channel decoding, the demodulating unit  120  can output a stream signal (TS). In this case, the stream signal may correspond to an image signal, an audio signal, or a multiplexed data signal. As an example, the stream signal may correspond to an image signal of MPEG-2 standard or MPEG-2 TS (transport stream), which is a multiplexed audio signal and the like of Dolby AC-3 standard. Specifically, the MPEG-2 TS can include a header of 4 bytes and a payload of 184 bytes. 
     Meanwhile, the aforementioned demodulating unit  120  can be separately equipped with according to the ATSC scheme and the DVB scheme. In particular, the demodulating unit can be separately equipped with an ATSC demodulating unit and a DVB demodulating unit. 
     The stream signal outputted from the demodulating unit  120  can be inputted to the control unit  170 . After performing demultiplexing, video/audio signal processing, and the like, the control unit  170  outputs an image in the display unit  180  and outputs an audio in the audio output unit  185 . 
     The external device interface unit  135  can access an external device with the image display device  100 . To this end, the external device interface unit  135  can include an A/V input/output unit (not depicted) or a radio communication unit (not depicted). 
     The external device interface unit  135  can access such an external device as a DVD (digital versatile disc), a blue ray, a game device, a camera, a camcorder, a computer (notebook), and the like in wired or wireless. The external device interface unit  135  delivers an image, an audio, or a data signal inputted from an external via a connected external device to the control unit  170  of the image display device  100 . And, the external device interface unit  135  can output the image, the audio, or the data signal processed by the control unit  170  to the external device. To this end, the external device interface unit  135  can include an A/V input/output unit (not depicted) or a radio communication unit (not depicted). 
     The A/V input/output unit can include an USB terminal, a CVBS (composite video banking sync) terminal, a component terminal, an S-video terminal (analog), a DVI (digital visual interface) terminal, an HDMI (high definition multimedia interface) terminal, an RGB terminal, a D-SUB terminal, and the like to input an image and an audio signal of the external device to the image display device  100 . 
     The radio communication unit can perform a short range radio communication with a different electronic device. The image display device  100  can be connected to a different electronic device with a network according to such a communication standard as Bluetooth, RFID (radio frequency identification), infrared communication (IrDA, infrared data association), UWB (ultra wideband), ZigBee, DLNA (digital living network alliance), and the like. 
     And, the external device interface unit  135  accesses various set top boxes via at least one of the aforementioned various terminals and may perform an input/output operation with a set top box. 
     Meanwhile, the external device interface unit  135  can deliver an application or an application list of a neighboring external device to the control unit  170  or the storing unit  140  in a manner of receiving the application or the application list of the neighboring external device. 
     The network interface unit  130  provides an interface configured to connect the image display device  100  to a wired/wireless network including an internet network. In order to access a wired network, the network interface unit  130  can be equipped with an Ethernet terminal for example. In order to access a wireless network, the network interface unit can use such a communication standard as WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless Broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), and the like. 
     The network interface unit  130  can transmit or receive a data with a different user or a different electronic device via an accessed network or a different network linked to the accessed network. In particular, the network interface unit can transmit a part of content data stored in the image display device  100  to a selected user or a selected electronic device among different users registered in the image display device  100  or different electronic devices. 
     Meanwhile, the network interface unit  130  can access a prescribed web page via an accessed network or a different network linked to the accessed network. In particular, the network interface unit can transmit and receive a data with a corresponding server in a manner of accessing a prescribed web page via a network. Besides, the network interface unit can receive contents or data provided by a content provider or a network administrator. In particular, the network interface unit can receive such content as a movie, an advertisement, a game, VOD, a broadcasting signal, and the like provided by the content provider or a network provider and the information related to the content via a network. And, the network interface unit can receive update information and an update file of a firmware provided by the network administrator. And, the network interface unit can transmit data to the internet provider, the content provider, or the network administrator. 
     And, the network interface unit  130  can receive a preferred application among the applications opened to the public in a manner of selecting via a network. 
     The storing unit  140  can store a program configured to process and control each signal in the control unit  170 , a signal processed image, an audio, or a data signal. 
     And, the storing unit  140  may perform a function of temporarily storing an image, an audio, or a data signal inputted from the external device interface unit  135  or the network interface unit  130 . And, the storing unit  140  can store the information on a prescribed broadcasting channel via a channel memory function. 
     And, the storing unit  140  can store an application or an application list inputted from the external device interface unit  135  or the network interface unit  130 . 
     And, the storing unit may store various platforms described later. 
     The storing unit  140  can include at least one type of storage media selected from the group consisting of a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., an SD memory, an XD memory, or the like), a RAM, a ROM (EEPROM etc.). The image display unit  100  can provide the content file (a moving image file, a still image file, a music file, a document file, an application file, and the like) stored in the storing unit  140  to a user by playing the content file. 
     Although  FIG.  6    depicts an embodiment that the storing unit  140  is separately installed with the control unit, the scope of the present invention may be non-limited to this. The storing unit  140  can be included in the control unit  170 . 
     The user input interface unit  150  delivers a signal inputted by a user to the control unit  170  or delivers a signal from the control unit  170  to the user. 
     For instance, the user input interface unit  150  can receive and process such a control signal as power on/off, channel selection, screen configuration, and the like from the remote control device  200  according to such various communication schemes as an RF (radio frequency) communication scheme, an infrared (IR) communication scheme, and the like. Or, the user input interface unit can process to transmit a control signal from the control unit  170  to the remote control device  200 . 
     And, for instance, the user input interface unit  150  can deliver a control signal inputted from such a local key as a power key, a channel key, a volume key, a configuration key, and the like to the control unit  170 . 
     And, for instance, the user input interface unit  150  delivers a control signal inputted from a sensing unit (not depicted), which senses a gesture of a user, to the control unit  170  or can transmit a signal from the control unit  170  to the sensing unit (not depicted). In this case, the sensing unit (not depicted) can include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like. 
     The control unit  170  demultiplexes an inputted stream via the tuner  110 , the demodulating unit  120 , or the external device interface unit  135 . Or, the control unit can generate and output a signal for an image or an audio output by processing the demultiplexed signals. 
     An image signal, which is image processed in the control unit  170 , is inputted to the display unit  180  and can be displayed as an image corresponding to the corresponding image signal. And, the image signal, which is image processed in the control unit  170 , can be inputted to an external output device via the external device interface unit  135 . 
     An audio signal processed in the control unit  170  can be audio outputted to the audio output unit  185 . And, the audio signal processed in the control unit  170  can be inputted to the external output device via the external device interface unit  135 . 
     Although it is not depicted in  FIG.  6   , the control unit  170  can include a demultiplexing unit, an image processing unit, and the like. This shall be described later with reference to  FIG.  10   . 
     Besides, the control unit  170  can control overall operation in the image display device  100 . For instance, the control unit  170  can control the tuner  110  to tune an RF broadcasting, which corresponds to a channel selected by a user or a pre-stored channel. 
     And, the control unit  170  can control the image display device  100  by a user command inputted via the user input interface unit  150  or an internal program. In particular, the control unit enables a user to download a preferred application or an application list in the image display device by accessing a network. 
     For instance, the control unit  170  controls the tuner  110  to input a signal of a selected channel according to a prescribed channel selection command, which is received via the user input interface unit  150 . And, the control unit processes an image, an audio, or a data signal of the selected channel. The control unit  170  makes the display unit  180  or the audio output unit  185  to output an image processed by channel information selected by a user or an audio signal. 
     As a different example, the control unit  170  makes the display unit  180  or the audio output unit  185  to output the image signal or the audio signal inputted from such an external device as a camera or a camcorder via the external device interface unit  135  according to an external device image play command received via the user input interface unit  150 . 
     Meanwhile, the control unit  170  can control the display unit  180  to display an image. For instance, the control unit can control the display unit  180  to display a broadcasting image inputted via the tuner  110 , an external input image inputted via the external device interface unit  135 , an image inputted via the network interface unit, or an image stored in the storing unit  140 . In this case, the image displayed in the display unit  180  may correspond to a still image, a moving image, a 2 dimensional image, or a 3 dimensional image. 
     And, the control unit  170  can control content to be played. In this case, the content may correspond to the content stored in the image display device  100 , a received broadcasting content, or an external input content inputted from external. The content may correspond to at least one selected from the group consisting of a broadcasting image, an externally inputted image, an audio file, a still image, an accessed web screen, and a document file. 
     The control unit  170  can control an application downloaded from an external network together with various user interfaces to be installed and executed. And, the control unit can control an image related to the application, which is executed by a user selection, to be displayed in the display unit  180 . 
     And, the control unit  170  can include an application management unit  1701 , a menu generating unit  1702 , and a key screen generating unit  1703  in relation to embodiment of the present invention. 
     The application management unit  1701  is a module managing an application available in the image display device. In particular, the application management unit  1701  can configure an application list by searching for application available in the image display device. And, the application available in the image display device can include an application installed in the image display device or an application installable to the image display device from a server according to embodiment. 
     The menu generating unit  1702  is a module generating a selection menu item of an application for which the application management unit searched. In particular, the menu generating unit can generate an application list including an application selection menu item in a manner of including icon information, text information, and the like of the application. 
     The key screen generating unit  1703  is a module generating a key screen. 
     The key screen is an information window displayed in a form of a card including such image information as a screenshot for an application and the like. The key screen generating unit  1703  can generate an advertisement key screen including a key screen of at least one application and an advertisement image among the application included in the application list, which is generated by the menu generating unit  1702 . 
     And, the key screen generating unit  1703  can receive image information and text information included in the key screen via the network interface unit. 
     The control unit  170  can control the display unit to display an application list and a key screen. 
     And, if an application selection signal is received via the user interface unit  150 , the control unit  170  can control the display unit to display a key screen corresponding to the selected application in a manner of expanding, a key screen list capable of being scrolled, which includes at least one key screen different from the expanded key screen, and detail information corresponding to the selected application. 
     And, if an application confirmation signal is received via the user interface unit  150 , the control unit  170  can control the display unit to display a key screen of the selected application as a full screen. 
     And, if an application execution signal is received via the user interface unit, the control unit  170  can control an application corresponding to the key screen on the full screen to be executed. 
     And, in a state that the key screen is displayed in a manner of being expanded as a full screen, the control unit  170  can display a 2 nd  application list including an application execution menu item. And, if a prescribed application selection signal included in the 2 nd  application list is inputted, the control unit can convert the key screen on the full screen. 
     The menu generating unit  1702  and the key screen generating unit  1703  can be included in an OSD generating unit, which is included in the control unit  170 . Regarding the OSD generating unit, it shall be described in detail in  FIG.  10   . 
     Meanwhile, although it is not depicted in the diagram, it is possible to further include a channel browsing processing unit configured to generate a thumbnail image corresponding to a channel signal or an external input signal. 
     The channel browsing processing unit can generate a thumbnail image in a manner of receiving a stream signal (TS) outputted from the demodulating unit  120 , the stream signal outputted from the external device interface unit, or the like and extracting an image from the inputted stream signal. The generated thumbnail image can be inputted to the control unit  170  as it is or in a manner of being coded. And, the generated thumbnail image can also be inputted to the control unit  170  in a manner of being coded in a form of a stream. The control unit  170  can display a thumbnail list equipped with a plurality of thumbnail images using the inputted thumbnail image in the display unit  180 . Meanwhile, the thumbnail images in the thumbnail list can be updated sequentially or simultaneously. By doing so, a user can easily identify the contents of a plurality of broadcasting channels. 
     The display unit  180  generates a driving signal by converting an image signal, a data signal, an OSD signal processed in the control unit  170  or the image signal, a data signal, and the like received from the external device interface unit  135  into R, G, B signal, respectively. 
     The display unit  180  may correspond to a PDP, an LCD, an OLED, a flexible display, a 3 dimensional display, and the like. 
     Meanwhile, the display unit  180  can be used as an input device in a manner of being configured with a touch screen as well as an output device. 
     The audio output unit  185  outputs an audio in a manner of receiving such an audio-processed signal as a stereo signal, a 3.1 channel signal, or a 5.1 channel signal from the control unit  170 . The audio output unit  185  can be implemented by a speaker of various forms. 
     The power supply unit  190  supplies corresponding power to the overall image display device  100 . 
     In particular, the power supply unit can supply power to the control unit  170  capable of being implemented in a form of a System on Chip (SOC), the display unit  180  configured to display an image, and the audio output unit  185  configured to output an audio. 
     To this end, the power supply unit  190  can be equipped with a converter (not depicted) converting AC power supply into DC power supply. Meanwhile, for instance, if the display unit  180  is implemented with a liquid crystal panel equipped with a plurality of backlight lamps, the power supply unit can be further equipped with an inverter (not depicted) capable of performing PWM operation for brightness variable or a dimming operation. 
     The remote control device  200  transmits a user input to the user input interface unit  150 . To this end, the remote control device  200  can use Bluetooth, an RF (radio frequency) communication, an infrared (IR) communication, an UWB (Ultra Wideband), ZigBee scheme, and the like. 
     And, the remote control device  200  receives an image outputted from the user input interface unit  150 , an audio, or a data signal and displays it in the remote control device  200  or can output an audio or a vibration. 
     The aforementioned image display device  100  may correspond to a digital broadcasting receiver capable of receiving at least one of a digital broadcasting of ATSC scheme (8-VSB scheme) as a fixed form, a digital broadcasting of DVB-T scheme (COFDM scheme), a digital broadcasting of ISDB-T scheme (BST-OFDM scheme), and the like. 
     Meanwhile, a block diagram of the image display device  100  depicted in  FIG.  2    is a block diagram for one embodiment of the present invention. Each of the configuration elements of the block diagram can be combined, added, or omitted according to the specification of an image display device  100  to be actually implemented. In particular, if necessary, 2 or more configuration elements can be combined into one or one configuration element can be configured in a manner of being divided into 2 or more configuration elements. And, the function performed in each block is just for describing embodiment of the present invention and the scope of right of the present invention may be non-limited to the detail operation and device of the display device. 
     Meanwhile, unlike the image display device depicted in  FIG.  6   , the image display device can receive and play image content via the network interface unit  130  or the external device interface unit  135  without the tuner  110  and the demodulating unit  120  depicted in  FIG.  6   . 
     Meanwhile, the image display device  100  is an example of an image signal processing device performing a process for an image stored in a device or a signal of an inputted image. As a different example of an image signal processing device, it is possible to exemplify a set top box without the display unit  180  and the audio output unit  185  depicted in  FIG.  6   , the aforementioned DVD player, a Blue ray player, a gaming device, a computer, and the like. Regarding the set top box, it is described with reference to  FIG.  7    and  FIG.  8    as follows. 
       FIG.  7    and  FIG.  8    are diagrams showing a prescribed one among image display devices according to embodiments of the present invention in a manner of dividing the prescribed one into a set top box and a display device. 
     First of all, referring to  FIG.  7   , a set top box  250  and a display device  300  can transmit and receive a data in wired or wireless. 
     The set top box  250  can include a network interface unit  255 , a storing unit  258 , a signal processing unit  260 , a user input interface unit  263 , and an external device interface unit  265 . 
     The network interface unit  255  provides an interface configured to establish a connection to a wired/wireless network including the internet network. And, the network interface unit can transmit or receive a data with a different user or a different electronic device via an accessed network or a different network linked to the accessed network. 
     The storing unit  258  can store a program configured to process each signal in the signal processing unit  260  and may perform a function of temporarily storing an image, an audio, or a data signal inputted from the external device interface unit  265  or the network interface unit  255 . And, the storing unit may store the platform described later with reference to  FIG.  11    and  FIG.  12   . 
     The signal processing unit  260  performs a signal processing for an inputted signal. For instance, the signal processing unit performs demultiplexing or decoding for an inputted image signal and can perform demultiplexing or decoding for an inputted audio signal. To this end, the signal processing unit can be equipped with an image decoder or an audio decoder. A signal-processed image signal or an audio signal can be transmitted to the display device  300  via the external device interface unit  265 . 
     The user input interface unit  263  delivers a signal inputted by a user to the signal processing unit  260  or delivers a signal from the signal processing unit  260  to the user. For instance, the user input interface unit receives such various control signals as power on/off, an operation input, a configuration input, and the like, which are inputted via a local key (not depicted) or the remote control device  200 , and can deliver the control signals to the signal processing unit  260 . 
     The external device interface unit  265  provides an interface configured to transceive a data with an external device, which is connected in wired or wireless. In particular, the external device interface unit provides the interface configured to transceive a data with the display device  300 . Besides, the external device interface unit can provide the interface configured to transceive a data with such an external device as a gaming device, a camera, a camcorder, a computer (notebook), and the like. 
     Meanwhile, the set top box  250  can further include a media input unit (not depicted) configured to play a separate media. As an example of the media input unit, it is possible to exemplify a blue ray input unit (not depicted) and the like. In particular, the set top box  250  can be equipped with a blue ray player. After performing such a signal processing as demultiplexing or decoding in the signal processing unit  260 , such a media as an inputted blue ray disk and the like can be transmitted to the display device  300  via the external device interface unit  265  to display the media. 
     The display device  300  can include a tuner  270 , an external device interface unit  273 , a demodulating unit  275 , a storing unit  278 , a control unit  280 , a user input interface unit  283 , a display unit  290 , and an audio output unit  295 . 
     Since the tuner  270 , the demodulating unit  275 , the storing unit  278 , the control unit  280 , the user input interface unit  283 , the display unit  290 , and the audio output unit  295  correspond to the tuner  110 , the demodulating unit  120 , the storing unit  140 , the control unit  170 , the user input interface unit  150 , the display unit  180 , and the audio output unit  185  depicted in  FIG.  6   , explanation for the aforementioned units is omitted. 
     Meanwhile, the external device interface unit  273  provides an interface configured to transceive a data with an external device accessed in wired or wireless. In particular, the external device interface unit provides the interface configured to transceive a data with the set top box. 
     By doing so, the external device interface unit makes an image signal or an audio signal inputted via the set top box  250  to be outputted via the display unit  180  or the audio output unit  185  by way of the control unit  170 . 
     Meanwhile, referring to  FIG.  8   , although the set top box  250  and the display device  300  are identical to the set top box  250  and the display device  300  depicted in  FIG.  7   , there exist a difference in that a position of the tuner  270  and the demodulating unit  275  is located at not in the display device  300  but in the set top box  250 . In the following description, it shall be described centering on the difference. 
     The signal processing unit  260  can perform a signal processing for a broadcasting signal received via the tuner  270  and the demodulating unit  275 . And, the user input interface unit  263  can receive such an input as a channel selection, a channel saving, and the like. 
       FIG.  9    is a diagram for explaining a process that a random one among image display devices according to embodiments of the present invention is communicating with the third devices. An image display device shown in  FIG.  9    may correspond to a prescribed one among the aforementioned image display devices according to embodiments of the present invention. 
     As shown in  FIG.  9   , the image display device  100  according to one embodiment of the present invention can communicate with a broadcasting station  210 , a network server  220 , or an external device  230 . 
     The image display device  100  can receive a broadcasting signal including an image signal transmitted by the broadcasting station  210 . The image display device  100  can process an image signal or an audio signal included in the broadcasting signal to be appropriate for outputting the image signal or the audio signal in the image display device  100 . The image display device  100  can output an image or an audio based on the processed image signal. 
     Meanwhile, the image display device can communicate with the network server  220 . The network server  220  is a device capable of transmitting and receiving a signal with the image display device via a random network. For instance, the network server  220  may correspond to a cellular phone terminal capable of being connected to the image display device  100  via a wired or wireless base station. And, the network server  220  may correspond to a device capable of providing content to the image display device  100  via the internet network. A content provider can provide the content to the image display device  100  using the network server. 
     Meanwhile, the image display device  100  can communicate with the external device  230 . The external device  230  is a device capable of directly transceiving a signal with the image display device  100  in wired or wireless. As an example, the external device  230  may correspond to a media storing device or a playing device used by a user. In particular, the external device  230  corresponds to a camera, a DVD, a blue ray player, a personal computer, or the like. 
     The broadcasting station  210 , the network server  220 , or the external device  230  can transmit a signal including an image signal to the image display device  100 . The image display device  100  can display an image based on the image signal included in the inputted signal. And, image display device  100  can transmit the signal transmitted by the broadcasting station  210  or the network server  220  to the image display device  100  to the external device  230 . And, the image display device can transmit the signal transmitted by the external device  230  to the image display device  100  to the broadcasting station  210  or the network server  220 . In particular, the image display device  100  not only directly plays the content included in the signal transmitted by the broadcasting station  210 , the network server  220 , and the external device  230  in the image display device  100  but also delivers the content to the broadcasting station, the network server, and the external device. 
       FIG.  10    is an internal block diagram of a control unit depicted in  FIG.  6   . It is explained with reference to  FIG.  10    and  FIG.  6    in the following description. 
     The control unit  170  according to one embodiment of the present invention includes a demultiplexing unit  310 , an image processing unit  320 , an OSD generating unit  340 , a mixer  350 , a frame rate converter  355 , and a formatter  360 . Besides, the control unit can further include an audio processing unit (not depicted) and a data processing unit (not processing). 
     The demultiplexing unit  310  demultiplexes an inputted stream. For instance, if MPEG-2 TS is inputted, the demultiplexing unit can classify the MPEG-2 TS into an image, an audio, and a data signal by demultiplexing the MPEG-2 TS. In this case, a stream signal inputted to the demultiplexing unit  310  may correspond to the stream signal outputted from the tuner  110 , demodulating unit  120 , or the external device interface unit  135 . 
     The image processing unit  320  can perform an image processing for a demultiplexed image signal. To this end, the image processing unit  320  can be equipped with an image decoder  325  and a scaler  335 . 
     The image decoder  325  decodes a demultiplexed image signal and the scaler  335  performs a scaling to enable the display unit  180  to output the resolution of a decoded image signal. 
     The image decoder  325  can be equipped with decoders of various standards. 
     For instance, if a demultiplexed image signal corresponds to a coded image signal of MPEG-2 standard, the demultiplexed image signal can be decoded by an MPEG-2 decoder. 
     And, if a demultiplexed image signal corresponds to a coded image signal of DMB (digital multimedia broadcasting) scheme or H.264 standard according to DVB-H, the demultiplexed image signal can be decoded by an H.264 decoder. 
     Meanwhile, the image signal decoded in the image processing unit  320  is inputted to the mixer  350 . 
     The OSD generating unit  340  generates an OSD signal according to a user input or by itself. For instance, the OSD generating unit can generate a signal configured to display various informations in a screen of the display unit  180  with a graphic or a text based on a control signal from the user input interface unit  150 . The OSD signal generated from the OSD generating unit can include various data such as a user interface screen of the image display device  100 , various menu screens, a widget, an icon, and the like. 
     For instance, the OSD generating unit  340  can generate a signal configured to display a caption of a broadcasting image or broadcasting information based on EPG. 
     The mixer  350  can mix an OSD signal generated by the OSD generating unit  340  with a decoded image signal, which is image-processed in the image processing unit  220 . A mixed signal is provided to the formatter  360 . By mixing a decoded broadcasting image signal or an external input signal with an OSD signal, an OSD can be displayed on a broadcasting image or on an external input image in a manner of being overlaid. 
     The frame rate converter (FRC)  355  can convert a frame rate of an inputted image. For instance, the frame rate converter converts a frame rate of 60 Hz to 120 Hz or 240 Hz. In case of converting the frame rate from 60 Hz to 120 Hz, it is able to insert an identical 1 st  frame between the 1 st  frame and a 2 nd  frame or it is able to insert a 3 rd  frame, which is predicted from the 1 st  and 2 nd  frame, between the 1 st  and 2 nd  frame. In case of converting the frame rate from 60 Hz to 240 Hz, it is able to insert 3 more identical frames or it is able to insert 3 predicted frames between the 1 st  frame and the 2 nd  frame. Meanwhile, it is also possible to maintain an inputted frame rate without any separate converting. 
     The formatter  360  receives an output signal of the frame rate converter  355  and outputs a signal by changing a format of the signal to be suitable for the display unit  180 . For instance, the formatter can output R, G, B data signal. The R, G, B data signal can be outputted by a low voltage differential signaling (LVDS) or a mini-LVDS. 
     Meanwhile, the audio processing unit (not depicted) in the control unit  170  can perform an audio processing for a demultiplexed audio signal. To this end, the audio processing unit (not depicted) can be equipped with various decoders. 
     If a demultiplexed audio signal corresponds to a coded audio signal, the audio processing unit (not depicted) in the control unit  170  can decode the demultiplexed audio signal. For instance, the demultiplexed audio signal can be decoded by an MPEG-2 decoder, an MPEG-4 decoder, an AAC decoder, or an AC-3 decoder. 
     And, the audio processing unit (not depicted) in the control unit  170  can process a base, a treble, volume adjustment, and the like. 
     The data processing unit (not depicted) in the control unit  170  can perform a data process for a demultiplexed data signal. For instance, if the demultiplexed data signal corresponds to a coded data signal, the data processing unit can decode the demultiplexed data signal. The coded data signal may correspond to an electronic program guide (EPG) information including such broadcasting information as a start time of a broadcasting program broadcasted in each channel, end time, and the like. For instance, the EPG information may correspond to ATSC-PSIP (ATSC-program and system information protocol) information in case of the ATSC scheme and may include DVB-SI (DVB-service information) information in case of the DVB scheme. 
     The ATSC-PSIP information or the DVB-SI information may correspond to the information included in the aforementioned stream, in particular, the information included in a header (4 bytes) of the MPEG-2 TS. 
     Meanwhile, since the block diagram of the control unit  170  depicted in  FIG.  10    is a block diagram for one embodiment of the present invention, it is possible to add a different module or omit a part of the depicted modules according to a necessity of a person engaged in a relevant field. 
       FIG.  11    is a diagram of an example of a platform structure of a random one among image display devices according to embodiments of the present invention. 
       FIG.  12    is a diagram of a different example of a platform structure of a random one among image display devices according to embodiments of the present invention. 
     A platform of a random one among the image display devices according to embodiments of the present invention can be equipped with OS-based software to perform the aforementioned various operations. 
     First of all, if it is explained with reference to  FIG.  11   , a random platform among the image display devices according to embodiments of the present invention corresponds to a discrete type platform and it can be designed in a manner of dividing into a legacy system platform  400  and a smart system platform  405 . An OS kernel  410  can be commonly used by the legacy system platform and the smart system platform  405 . 
     The legacy system platform  400  can include a driver  420 , a middleware  430 , and an application layer  450  on the OS kernel  410 . 
     Meanwhile, the smart system platform  405  can include a library  435 , a framework  440 , and an application layer  455  on the OS kernel  410 . 
     The OS kernel is a core of an operating system. When the image display device works, the OS kernel can perform at least one selected from the group consisting of a hardware driver operation, security of a hardware and a processor in the image display device, efficient management of a system resource, a memory management, providing an interface for the hardware by hardware abstraction, multi process, a schedule management according to the multi process, and the like. Meanwhile, the OS kernel  410  may further provide a power management and the like. 
     The hardware driver in the OS kernel  410  can include at least one selected from the group consisting of a display driver, a WiFi driver, a Bluetooth driver, a USB driver, an audio driver, a power management, a binder driver, a memory driver, and the like. 
     And, the hardware driver in the OS kernel  410  is a driver for a hardware device in the OS kernel  410  and can be equipped with a character device driver, a block device driver, and a network device driver. Since a data is transmitted in a specific block unit, the block device driver may need a buffer to store as much as a unit size. Unlike the block device driver, the character device driver may not need a buffer since a basic data unit, i.e., character unit of data is transmitted. 
     The OS kernel  410  can be implemented by the kernel based on such various operating systems (OS) as a UNIX based (LINUX), a window based, and the like. And, since the OS kernel  410  is an opened OS kernel, the OS kernel can be used as a general purpose OS by a different electronic device and the like. 
     The driver  420  is situated at between the OS kernel  410  and the middleware  430  and drives a device for operations of the application layer  450  together with the middleware  430 . For instance, the driver  420  can include the driver of a micom in the image display device, a display module, a graphic processing unit, a frame rate converter (FRC), a GPIO (General Purpose Input/Output Pin), HDMI, SDEC (System Decoder or the demultiplexing unit), VDEC (Video Decoder), ADEC (Audio Decoder), PVR (Personal Video Recorder), I2C (Inter-Integrated Circuit), or the like. These drivers are working in a manner of interlocking with a hardware driver in the OS kernel  410 . 
     And, the driver  420  can be further equipped with the remote control device  200 , in particular, a driver of a spatial remote controller, which shall be described in the following description. Meanwhile, the driver of the spatial remote controller can be variously installed in the OS kernel  410 , the middleware  430  as well as the driver  420 . 
     The middleware  430  is situated at between the OS kernel  410  and the application layer  450  and can play a role of mediating to make a data to be transceived with different hardware or software. By doing this, it is possible to provide a standardized interface, to support various environments and to interlock with a task having a different system. 
     The example of the middleware within the legacy system platform  400  may include a MHEG (Multimedia and Hypermedia information coding Experts Group) and an ACAP (Advanced Common Application Platform), which correspond to the middleware related to a data broadcasting and the middleware of PSIP or SI, which correspond to the middleware related to a broadcasting information, and a DLNA middleware, which corresponds to the middleware related to a peripheral device communication. 
     The application layer  450  on the middleware  430 , in particular, the application layer  450  within the legacy system platform  400  can include a user interface application for various menus in the image display device  100 . The application layer  450  on the middleware  430  can be edited by a user selection and can be updated via a network. It is able to enter a preferred menu among the various user interfaces according to an input of the remote control device while a broadcasting image is watched by using the aforementioned application layer  450 . 
     And, the application layer  450  within the legacy system platform  400  can further include at least one selected from the group consisting of a TV guide application, a Bluetooth application, a reservation application, a digital video recorder (DVR) application, a hot key application. 
     Meanwhile, the library  435  within the smart system platform  405  is situated at between the OS kernel  410  and the framework  440  and can form a basis of the framework  440 . For instance, the library  435  can include a security-related library SSL (Secure Socket Layer), a web-engine related library WebKit, a media-related (video format and audio format) library media frame work, and the like. This library  435  can be made based on C or C++. And, the library can be exposed to a developer. 
     The library  435  can include a runtime  437  equipped with a core java library and a virtual machine (VM). The runtime  437  forms the basis of the framework  440  together with the library  435 . 
     The virtual machine (VM) may correspond to a virtual machine making a plurality of instances, i.e., multitasking to be performed. Meanwhile, each virtual machine (VM) can be executed in a manner of being assigned according to each application in the application layer  455 . In this case, the binder driver (not depicted) in the OS kernel  410  can operate to adjust a schedule or to interconnect between a plurality of instances. 
     Meanwhile, the binder driver and the runtime  437  can connect a java-based application to a C-based library. 
     Meanwhile, the library  435  and the runtime  437  may correspond to the middleware of the legacy system. 
     Meanwhile, the framework  440  in the smart system platform includes a program, which becomes a basis of an application in the application layer  455 . The framework  440  can be compatible with any application and may be able to re-use, move, or exchange a component. The framework  440  can include a supporting program, a program for weaving different software configuration elements, and the like. For instance, the framework can include a resource manager, an activity manager related to an activity of an application, a notification manager, a content provider summarizing shared information between applications, and the like. The frame work  440  can be made based on java. 
     The application layer  455  on the framework  440  includes various programs displayable in the image display device  100  in a manner of being executed. For instance, the application layer can include a core application, which is equipped with at least one selected from the group consisting of an email, a short message service (SMS), a calendar, a map, a browser, and the like. The application layer  450  can be made based on java. 
     And, the application layer  455  can be classified into an application  465  not capable of being deleted by a user since the application is stored within the image display device  100  and an application  475  stored in a manner of being downloaded by an external device or a network and capable of being easily installed or deleted by the user. 
     Via the application in the application layer  455 , an internet phone service, a video on demand (VOD) service, a web album service, a social networking service (SNS), a location based service (LBS), a map service, a web search service, an application search service, and the like can be performed by accessing a network. And, various functions such as a game, a schedule management, etc. can be performed. 
     Meanwhile, referring to  FIG.  12   , a random platform among the image display devices according to one embodiment of the present invention corresponds to an integrated type platform and can include an OS kernel  510 , a driver  520 , a middleware  530 , a framework  540  and an application layer  550 . 
     The platform in  FIG.  12    has differences in that the library depicted in  FIG.  11    is omitted and the application layer  550  is equipped with an integrated layer compared to the platform in  FIG.  11   . The driver  520  and the framework  540  correspond to the  FIG.  11   . 
     Meanwhile, it is possible to design the library  435  depicted in  FIG.  11    to be amalgamated to the middleware  530  depicted in  FIG.  12   . In particular, the middleware  530  can include the MHEG or the ACAP, which correspond to the middleware related to a data broadcasting and the middleware of PSIP or SI, which correspond to the middleware related to a broadcasting information, and a DLNA middleware, which corresponds to the middleware related to a peripheral device communication as the middleware under the legacy system as well as a security-related library SSL (Secure Socket Layer), a web-engine related library WebKit, a media-related library media frame work, and the like as the middleware under an image display device system. Meanwhile, the middleware can further include the aforementioned runtime. 
     The application layer  550  includes a menu-related application, a TV guide application, a reservation application, and the like as the application under the legacy system and can include an email, an SMS, a calendar, a map, a browser, and the like as the application under the image display device system. 
     Meanwhile, the application layer  550  can be classified into an application  565  not capable of being deleted by a user since the application is stored within the image display device  100  and an application  575  stored in a manner of being downloaded by an external device or a network and capable of being easily installed or deleted by the user. 
     Meanwhile, various API (application programming interface) and SDK (software development kit) can be opened by the aforementioned platform base in  FIG.  11    and  FIG.  12   . Meanwhile, the API can be implemented in a manner of calling a function providing a connection to a specific subroutine to be executed in a program. 
     For instance, it is possible to open such a source related to the hardware driver in the OS kernel  410  as a display driver, a WiFi driver, a Bluetooth driver, a USB driver, an audio driver, or the like, to open such a source related to the driver  420  as a micom, a display module, a graphic processing unit (GPU), a frame rate converter (FRC), an SDEC, a VDEC, an ADEC, a spatial remote controller, or the like, or to open such a source related to broadcasting information as PSIP or SI middleware or such a source related to the DLNA middleware. 
     Due to the various opened APIs, a developer and the like are able to develop an application executing in the image display device  100  or an application configured to control the operations of the image display device  100  based on the aforementioned platform depicted in  FIG.  11    and  FIG.  12   . 
     The aforementioned platform depicted in  FIG.  11    and  FIG.  12    can be commonly used in various electronic devices as well as the image display device. Meanwhile, the platform depicted in  FIG.  11    and  FIG.  12    can be stored or loaded in the storing unit  140  depicted in  FIG.  6   , control unit  170 , or a separate processor (not depicted). And, the platform can be stored or loaded in the SI &amp; metadata DB  711  depicted in  FIG.  5   , the UI manager  714 , or the service manager  713 . And, a separate application processor (not depicted) configured to execute an application can be further installed. 
       FIG.  13    is a diagram of a method of controlling a remote control device controlling a random one among image display devices according to embodiments of the present invention. 
     As shown in  FIG.  13    (a), it exemplifies that a pointer  205  corresponding to a remote control device  200  is displayed in the display unit  180 . 
     A user can move or rotate the remote control device  200  up and down, from side to side ( FIG.  13    (b)), or back and forth ( FIG.  13    (c)). The pointer  205  displayed in the display unit  180  of the image display device corresponds to the movement of the remote control device  200 . As shown in  FIG.  13   , since the corresponding pointer  205  is displayed in the display unit according to the movement of the remote control device  200  in a 3 dimensional (3D) space, the remote control device can be named a spatial remote controller. 
       FIG.  13    (b) exemplifies that the pointer  205  displayed in the display unit  180  of the image display device moves to the left, if a user moves the remote control device  200  to the left. 
     Information on the movement of the remote control device  200 , which is sensed by a sensor of the remote control device  200 , is transmitted to the image display device. The image display device can calculate a coordinate of the pointer  205  from the information on the movement of the remote control device  200 . The image display device can display the pointer  205  in a manner of corresponding to the calculated coordinate. 
       FIG.  13    (c) exemplifies that a user moves the remote control device  200  away from the display unit  180  in a state that the user is pushing a specific button in the remote control device  200 . By doing so, a selected area in the display unit  180  corresponding to the pointer  205  is zoomed in and can be displayed in a manner of being expanded. On the contrary, if the user moves the remote control device  200  close to the display unit  180 , the selected area in the display device  180  corresponding to the pointer  205  is zoomed out and can be displayed in a manner of being reduced in size. Meanwhile, if the remote control device  200  moves away from the display unit  180 , the selected area is zoomed out, if the remote control device moves close to the display unit  180 , the selected area is zoomed in. 
     Meanwhile, in a state that a user is pushing a specific button in the remote control device  200 , recognition for moving from side to side or moving up and down of the remote control device can be excluded. In particular, in case that the remote control device  200  moves back and forth from the display unit  180 , it is able to make the back and forth movement of the remote control device to be recognized only while the movement of up and down or the movement from side to side is not recognized. In a state that a specific button in the remote control device  200  is not pushed, the pointer  205  just moves according to the movement of up and down or the movement from side to side of the remote control device  200 . 
     Meanwhile, moving speed or moving direction of the pointer  205  can correspond to the moving speed or the moving direction of the remote control device  200 . 
     Meanwhile, the pointer of the present specification means an object displayed in the display unit  180  in response to an operation of the remote control device  200 . Hence, it is possible to use an object of various forms besides an arrow form depicted in  FIG.  13    as the pointer  205 . For instance, the pointer may correspond to a concept including a point, a cursor, a prompt, a thick border line, and the like. And, the pointer  205  can be displayed in a manner of corresponding to such a plurality of points as a line, a surface, and the like as well as displayed in a manner of corresponding to a prescribed point among a horizontal axis and a vertical axis on the display unit  180 . 
       FIG.  14    is an internal block diagram of a remote control device controlling a random one among image display devices according to embodiments of the present invention. 
     Referring to  FIG.  14   , the remote control device  200  can include a radio communication unit  225 , a user input unit  235 , a sensor unit  240 , an output unit  250 , a power supply unit  260 , a storing unit  270 , and a control unit  280 . 
     The radio communication unit  225  transceives a signal with a random one of the aforementioned image display devices according to embodiments of the present invention. Among the image display devices according to embodiments of the present invention, one image display device  100  is explained as an example. 
     According to the present embodiment, the remote control device  200  can be equipped with an RF module  221  capable of transceiving a signal with the image display device according to an RF communication standard. And, the remote control device  200  can be equipped with an IR module  223  capable of transceiving a signal with the image display device  100  according to an IR communication standard. 
     According to the present embodiment, the remote control device  200  transmits a signal including information on movement of the remote control device  200  and the like to the image display device  100  via the RF module  221 . 
     And, the remote control device  200  can receive the signal transmitted by the image display device  100  via the RF module  221 . And, the remote control device  200  can transmit a command for power on/off, channel switching, volume control, and the like to the image display device  100  via the IR module, if necessary. 
     The user input unit  235  can consist of a key pad, a button, a touch pad, a touch screen, or the like. A user can input a command related to the image display device  100  to the remote control device  200  in a manner of controlling the user input unit  235 . If the user input unit  235  is equipped with a hard key button, the user can input a command related to the image display device  100  to the remote control device  200  via a push operation of the hard key button. If the user input unit  235  is equipped with the touch screen, the user can input a command related to the image display device  100  to the remote control device  200  in a manner of touching a soft button of the touch screen. And, the user input unit  235  can be equipped with such various input means capable of being operated by the user as a scroll key, a jog key, or the like and the present embodiment does not limit the scope of right of the present invention. 
     The sensor unit  240  can be equipped with a gyro sensor  241  or an acceleration sensor  243 . 
     The gyro sensor  241  can sense information on the movement of the remote control device  200 . 
     As an example, the gyro sensor  241  can sense the information on the operation of the remote control device  200  on the basis of x, y, and z axis. The acceleration sensor  243  can sense information on the moving speed and the like of the remote control device  200 . Meanwhile, the sensor unit can be further equipped with a distance measurement sensor and can sense a distance from the display unit  180  by the distance measurement sensor. 
     The output unit  250  corresponds to an operation of the user input unit  235  or can output an image or an audio corresponding to a signal transmitted by the image display device  100 . Via the output unit  250 , a user can identify whether the user input unit  235  operates or whether the image display device  100  controls. 
     As an example, the output unit  250  can be equipped with a LED module  251 , which is lighted if the user input unit  235  operates or if a signal is transceived with the image display device  100  via the radio communication unit  225 , a vibration module  253  generating a vibration, a sound output module  255  outputting a sound, or a display module  257  outputting an image. 
     The power supply unit  260  supplies power to the remote control device  200 . If the remote control device  200  does not move for a prescribed time period, the power supply unit  260  stops supplying power, thereby reducing power waste of the remote control device. The power supply unit  260  can resume the power supply in case that a prescribed key installed in the remote control device  200  is operated. 
     The storing unit  270  can store various programs necessary for controlling or operating the remote control device  200 , an application data, and the like. If the remote control device  200  tranceives a signal via the image display device  100  and the RF module  221  in wireless, the remote control device  200  and the image display device  100  transmit and receive the signal via a prescribed frequency band. The control unit  280  of the remote control device  200  can store and reference the information on a frequency band capable of transceiving a signal in wireless with the image display device  100  paired with the remote control device  200 , and the like in the storing unit  270 . 
     The control unit  280  controls all the matters related to a control of the remote control device  200 . The control unit  280  can transmit a signal corresponding to the operation of a prescribed key of the user input unit  235  or a signal corresponding to the movement of the remote control device  200 , which is sensed by the sensor unit  240 , to the image display device  100  via the radio communication unit  225 . 
       FIG.  15    is a diagram of a 1 st  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention. 
       FIG.  16    is a diagram of a 2 nd  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention. 
       FIG.  17    is a diagram of a 3 rd  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention. 
       FIG.  18    is a diagram of a 4 th  embodiment of a user interface provided by a random one among image display devices according to embodiments of the present invention. 
       FIG.  15    exemplifies that an application list on a network is displayed in the display unit  180 . In particular, it is possible for a user to download an application after searching for various applications in a manner of directly accessing a corresponding content server or a network server. 
       FIG.  15    (a) exemplifies that various application lists  610  in an accessed server are displayed in the display unit  180 . The application list  610  can include an icon indicating each application and brief explanation information on each application. Meanwhile, the image display device according to embodiments of the present invention can display the icon received from the accessed server or the size of the explanation information in a manner of expanding, since a full browsing for the image display device is possible. By doing so, a user can easily identify an application item. This shall be described later. 
       FIG.  15    (b) exemplifies that an application item  620  of a corresponding application list  610  is selected using a pointer  205  of the remote control device  200 . By doing so, a corresponding application can be easily downloaded. 
     Meanwhile,  FIG.  16    exemplifies that an application list in the image display device is displayed in the display unit  180 . First of all,  FIG.  16    (a) exemplifies that the application list  660  stored in the image display device according to embodiments of the present invention is displayed in the display unit  180  in case that a user enters an item of an application list view. Although the icons indicating each application are depicted in the diagram, this may be non-limited and may include brief explanation information on each application like as shown in  FIG.  15   . By doing so, a user can easily identify the application item. 
       FIG.  16    (b) exemplifies that an application item  670  of a corresponding application list  660  is selected using a pointer  205  of the remote control device  200 . By doing so, a corresponding application is conveniently executed. 
     Meanwhile, although it is exemplified that a prescribed item is selected in a manner of moving a pointer  205 , which moves according to the movement of a user, by the aforementioned remote control device  200  depicted in  FIG.  15    and  FIG.  16   , embodiment of the present invention may be non-limited to this and various different examples are also available. For instance, a prescribed item can be selected using a cursor displayed in a screen by a combination of a direction key and a confirmation key arranged to the remote control device  200  or a local key (not depicted). 
     And, as a different example, in case that the remote control device is equipped with a touch pad, the pointer  205  moves on the display unit  180  by a touch operation on the touch pad. It is also possible to select a prescribed item using the pointer. 
     Meanwhile,  FIG.  17    exemplifies that a web screen is displayed in the display unit of the image display device. 
     First of all,  FIG.  17    (a) exemplifies that a searchable prescribed web screen  710  equipped with a search bar  720  is displayed in the display unit  180 . A user can input a prescribed character in the search bar  720  using a key pad (not depicted) displayed in the screen, a letter key (not depicted) installed in a local key (not depicted), or the remote control device equipped with a letter key (not depicted). 
       FIG.  17    (b) exemplifies that a search result screen  730  according to a search word inputted in the search bar is displayed in the display unit  180 . Since the image display device according to embodiment of the present invention is able to perform a full browsing in case of displaying a web screen, a user can easily identify the web screen. 
     Meanwhile,  FIG.  18    exemplifies that a web screen is displayed in the display unit of the image display device. 
     First of all,  FIG.  18    (a) exemplifies that a mail service screen  810  equipped with an ID input bar  820  and a password input bar  825  is displayed in the display unit  180 . A user can input a prescribed character in the ID input bar  820  and the password input bar  825  using a key pad (not depicted) displayed in the screen, a letter key (not depicted) installed in a local key (not depicted), or the remote control device equipped with a letter key (not depicted). By doing so, the user can log in to a corresponding mail service. 
       FIG.  18    (b) exemplifies that a screen  830  after logging in to the mail service is displayed in the display unit  180 . For instance, such an item as a ‘read mail’, a ‘write mail’, a ‘sent box’, a ‘received box’, a ‘recycle bin’, and the like can be exemplified. And, a mail can be displayed in a manner of being classified into a ‘sender’ and a ‘title’ item in the ‘received box’ item. 
     Since the image display device according to embodiment of the present invention is able to perform a full browsing in case of displaying a mail service screen, a user can conveniently use the mail service. 
       FIG.  19    is a flowchart for a method of providing an application menu of an image display device according to embodiment of the present invention. 
     According to embodiment, the image display device can display an application list including application execution menu item in a manner of searching for an application available in the image display device [S 101 ]. 
     The application available in the image display device can include the application installed in the image display device according to one embodiment. Hence, the image display device searches for the storing unit or the control unit of the image display device and finds out which application is installed in the image display device. And, the image display device can display the application list including the application execution item of the application installed in the image display device based on the search result. 
     And, according to a different embodiment, the application available in the image display device can include an application installable in the image display device. Hence, the image display device searches a network accessed prescribed server for an application installable in the image display device in a network via the network interface unit. Based on the search result, the image display device can display the application list including the application execution item of the application installable in the image display device via the network. 
     As a means of connecting the network, a wired/wireless network including the internet network can be used. In particular, as a wired network, Ethernet and the like can be used for example. As a wireless network, WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) communication standard, and the like can be used for example. 
     And, the prescribed server can include a server managed by a service provider (SP) and a content provider (CP). 
     And, the application list can include an application execution menu item of the searched application. The application execution menu item can include a name of an application as a text data or include an icon corresponding to each application as an image data. 
     It is able to display an application key screen of a random application among the applications included in the application list [S 102 ]. 
     The key screen of an application corresponds to one of information windows displayed in a prescribed area of the display unit in a manner of including image information on the application. 
     In particular, the key screen can include a screen shot of an execution screen of the application as image information and can be displayed in the display unit of the image display device in a form of a card. Regarding a display form of the key screen shall be described in detail with reference to  FIG.  20   . 
     If the application list of the previous step ([S 101 ]) is displayed, the image display device can display an application key screen of the application where an application execution menu item is situated at the very first among the applications included in the application list according to embodiment. And, the image display device can further display the application key screen of the application menu items adjacent to the application execution menu item of which the key screen of the application is displayed. 
     And, according to a different embodiment, the image display device can display a selection block configured to select an application execution menu item or an application key screen of the application corresponding to a position of a pointer. In particular, for instance, if the pointer is positioned at the above of a random application execution menu item, the application key screen of the application at which the pointer is situated can be displayed and the image display device can further display the application key screen of the application menu items adjacent to the application execution menu item of which the key screen of the application is displayed. 
     Hence, in case that the selection block or the pointer moves according to a user input, the image display device can modify the displayed key screen in response to the movement. 
     The image display device can display at least one key screen. The number of the displayed key screen can be modified according to a user configuration. In case that a plurality of key screens are displayed in one screen, the image display device can display the key screens in a manner of overlapping a part of the key screens. 
     In the following  FIG.  20    to  FIG.  23   , a case that 3 application key screens are displayed is depicted with an example. 
     In particular, a user can obtain the information on what function is performed by an application and what is the operations of the application via the key screen even prior to directly executing the application. 
     The image display device can display an advertisement key screen [S 103 ]. 
     According to embodiment, the image display device can display an advertisement key screen equipped with an advertising area as well as the key screen of an application. 
     The advertisement key screen corresponds to an information window capable of being displayed in a prescribed area of the display unit in a manner of including an image data for a random advertising and the advertisement key screen can be displayed in a form of a card. And, the advertisement key screen can be displayed in a manner that a certain part of the advertisement key screen is overlapped with the key screen of the application. 
     And, according to embodiment, the image display device transmit a user information to a server via a network and can display the advertisement key screen in a manner of receiving an image information of the advertisement key screen from the server. 
     The user information can include information on the application installed in the image display device by a user, information on the content use used by the user via the image display device, and broadcasting watching information of the user. And, in order to protect personal information of the user, the user information can be transmitted to the server only if there exists information on information utilization agreement preconfigured to the user. 
     In particular, the image display device can simultaneously display the key screen of the application and the advertisement key screen in a manner of overlapping the key screen of the application and the advertisement key screen. Since a part of the advertisement key screen can be displayed in a manner of being overlapped, aversion of a user can be reduced in displaying an advertising area and interest of the user can be induced by blocking a certain part of the adverting area. 
     The image display device can receive an application selection signal [S 104 ]. 
     According to embodiment, a user determines an application necessary for performing a preferred operation via the application list or the key screen and can input the application selection signal in a manner of selecting an application selection menu item corresponding to the determined application. 
     As a means for inputting the signal, such various input means as a remote controller, a local key of the image display device, a touch screen, and the like can be used. 
     The image display device can display a key screen corresponding to the selected application in a manner of expanding the key screen [S 105 ]. 
     According to embodiment, if a selection signal of an application is received, the image display device can display the key screen corresponding to the selected application in a manner of expanding the key screen. Regarding a display screen including the expanded key screen is depicted in  FIG.  24    to  FIG.  25   . 
     And, the image display device can display detail information on the selected application together. The detail information can include text information on the selected application, evaluation information, and the like. 
     In particular, if a selection signal of a random application is inputted by a user, the image display device provides the user with an expanded key screen of the selected application and the detail information. Thus, the user can easily determine whether the selected application corresponds to the application capable of performing a preferred operation. 
     And, a method of providing an application menu according to one embodiment of the present invention can further include the steps of obtaining the information included in a key screen in more detail in a manner of displaying the key screen of the application by inputting an application confirmation signal and a step of driving the application in a manner of inputting an application execution signal. 
     In particular, by using the application menu displayed via the aforementioned process, a user can more easily identify the information on the application and a service provider can efficiently deliver an advertisement to the user using the image display device. 
       FIG.  20    is a diagram of a display screen  2000  including an application selection menu according to embodiment of the present invention. 
     According to embodiment, the image display device searches for an application available in the image display device and can display a 1 st  application list including application execution menu items ( 2001 ,  2002 , and  2003 ) of the searched application. 
     The 1 st  application list includes a name of each application in a form of a text data or can include an icon of each application in a form of an image data. 
     As described in  FIG.  19   , the application available in the image display device can include the application installed in the image display device and an application capable of being installed in the image display device via a network. 
     And, the image display device can include a key screen of the application. The key screen can include an image data for a major execution screen of the application. According to embodiment, the key screen can be adjusted to a random number according to a display screen of the image display device. In particular, the number of key screens outputted in one screen can be modified according to a user configuration. 
     For instance, as depicted in  FIG.  20   , the image display device can display 3 key screens. In particular, in case that an application selection block  2004  is positioned at ‘App 2’ application execution menu item in the 1 st  application list, a 2 nd  key screen  2006  corresponding to the ‘App 2’ application is displayed in the middle of a screen and a 1 st  key screen  2207  and a 3 rd  key screen  2008  corresponding to the applications  2001 ,  2003  positioned at the left and right side of the ‘App 2’ application in the 1 st  application list can be displayed in the left and right of the key screen  2006  of the ‘App 2’. 
     And, if the selection block  2004  is moved, the key screens ( 2006 ,  2007 , and  2008 ) can be converted into a key screen of an application at which the selection block is situated and key screens of applications positioned at the left and right of the application. 
     And, an application name of the application at which the selection block  2004  is positioned and information  2005  on a price and the like can be displayed as well. 
       FIG.  21    is a diagram of a display screen  2100  including an application menu containing an advertising area according to embodiment of the present invention. 
     According to embodiment, the image display device can display the advertising area together in the application menu configured to select and execute an application. 
     In particular, referring to  FIG.  21   , an advertisement key screen (AD key screen)  2101  can be further displayed in the application menu like as described in  FIG.  20   . 
     According to embodiment, the advertisement key screen may correspond to an image stored in the image display device in manufacture. And, if the image display device is connected to a network, the stored image can be periodically updated via the network. 
     And, according to embodiment, the advertisement key screen can be displayed in a manner of being customized to a user. In particular, the image display device transmits information on the application installed in the image display device and the information on such a watching behavior as a preferred channel of the image display device of the user, a preferring time, and the like to a server of a service provider (SP) via the network, the server transmits an advertisement image corresponding to the received informations to the image display device. By doing so, the advertisement key screen appropriate for the user of the image display device can be displayed. 
     And, in case of receiving the advertisement key screen via the network, the image display device searches for agreement information on the application installation information and utilization of watching behavior information. The image display device can be configured to transmit the information only when the agreement information is pre-stored. And, if the agreement information does not exist, the image display device can make a request for an input of the agreement information on utilization of the information. 
     In particular, via the display screen shown in  FIG.  21   , the image display device provides an application list capable of being efficiently used in the image display device. Moreover, the image display device can display an advertising screen without disturbing the display screen of the application list. Hence, the image display device can conveniently provide the advertising screen to a user without any aversion. 
       FIG.  22    is a diagram of a display screen  2200  including an application list control menu according to embodiment of the present invention. 
     According to embodiment, the image display device can display a prescribed menu and menu items capable of providing easy of use to a user together with the application menu screen depicted in  FIG.  20    to  FIG.  21   . 
     Referring to  FIG.  22   , the image display device can display a broadcasting content playing screen  2201 , an advertisement banner  2202 , an application search menu  2203 , a search item selection block  2204 , a log in menu item  2205 , a personal application list calling menu item  2206 , an application filtering menu item  2207 , a bookmark registration menu item  2208 , and an exit menu item  2209 . 
     The broadcasting content playing screen  2201  is configured to play a broadcasting content in a prescribed area of a display screen in a state that the image display device displays an application menu. The image display device can display the broadcasting content in a manner of receiving a broadcasting signal of a channel of which a user watched the very last. 
     Besides the broadcasting content, the image display device can display a moving image content stored in the image display device in advance or picture content in the playing screen  2201  according to embodiment. 
     In particular, by doing so, a user can watch a broadcasting content in the state that an application menu is displayed in the image display device. 
     The application search menu  2203  is a menu configured to search for an execution menu item of an application capable of being used in the image display device. The application search menu can include a menu item capable of searching for an application. 
     In particular, in case that the search item selection block  2204  is positioned at ‘All’, an application list can include execution menu items for all applications available in the image display device. In case that the search item selection block  2204  is positioned at ‘Wish list’, the application list can include execution menu items for the applications of which a user stored bookmark information. And, in case that the search item selection block  2204  is positioned at ‘Entertainment’, ‘game’, ‘life’, respectively, the application list can include the execution menu items of the application corresponding to each category. 
     The log in menu item  2205  enables a user to log in. 
     In particular, according to embodiment, since there exist an application that an application execution menu item is activated only when a user log in is performed, if a user inputs a selection signal of the log in menu item  2205 , the image display device displays a log in menu that the user is able to input a user ID or a password. In case that the user ID and the password are inputted by the user, the image display device checks the inputted information and may be then able to activate the application execution menu items requiring the user log in. 
     And, in case that the user log in is already performed, if the user selects the log in menu item  2205 , the image display device cancels the previous user log in and enables the user to log in with a different ID. 
     In case that one image display device is used by a plurality of users, the personal application list calling menu item  2206  can make an application list corresponding to each user to be displayed. 
     In particular, if a selection signal of the personal application list calling menu item  2206  is received, the image display device displays a list of each user registered in the image display device. If one user is selected among the list of users, the image display device loads user information of the selected user and may be then able to display an application list corresponding to the selected user. 
     The application filtering menu item  2207  can make the application list to be displayed in a manner of being filtered. 
     In particular, if a user selects the application filtering menu item, the image display device searches the application list for an object of filtering according to preconfigured filtering information and can display the application list including the application execution menu item of which the searched application is excluded only. 
     For instance, in case that a filtering signal for an application for adult is inputted, the image display device can delete an execution menu item for the application for adult from the application list. 
     The bookmark registration menu item  2208  can make a random application to be added to a bookmark list of the image display device. 
     In particular, if a selection signal of the bookmark registration menu item is inputted and an application menu item to be added is selected, the image display device adds the selected application to the bookmark list and stores configuration information. Thereafter, if a user selects ‘Wish List’ search item of the application search menu  2203 , the image display device can be configured to display an application list in a manner of including the execution menu item of the selected application. 
     The exit menu item  2209  erases the currently displayed application list and can return to the display screen before the application list is displayed. 
       FIG.  23    is a diagram of a display screen  2300  including an application list selection menu according to embodiment of the present invention. 
     According to embodiment, the image display device can display an application list selection menu capable of selecting an application list. 
     The application list selection menu can include each menu item capable of selecting a new application list  2301 , a popular application list  2302 , a top paid application list  2303 , a top free application list  2304 , a preferring (my tastes) application list  2305 . 
     Specifically, the new application list  2301  can include a list of an application recently installed in the image display device or an application list recently registered in a random server. A time range of the ‘recently’ can be modified to a day, a week, a month, and the like according to a user configuration. 
     The popular application list  2302  can include a list of an application having a highest evaluation score among the applications for which the image display device searched or an application list having the largest number of execution. 
     The top paid application list  2303  can include a list of an application having a greatest amount of sales among the applications for which the image display device searched. 
     The top free application list  2304  can include a list of a free application having a highest evaluation score or a free application recorded the largest number of download among the applications for which the image display device searched. 
     The preferring (my tastes) application list  2305  can include an application list corresponding to a preferring genre of a user, a preferring production company, and the like among the applications for which the image display device searched. 
     In particular, if a specific list is selected among the aforementioned lists ( 2301 ,  2302 ,  2303 ,  2304 , and  2305 ), the image display device can be designed to display a list of the application belonging to a corresponding group only. Hence, a user can have a technical advantage capable of promptly checking a key screen of the application that the user wants without searching for all applications. 
       FIG.  24    to  FIG.  25    are diagrams of display screens  2400 / 2500  including an expanded key screen according to embodiment of the present invention. 
     According to embodiment, if an application selection signal is received in a state that the application list of  FIG.  20    to  FIG.  23    and a key screen are displayed, the image display device can display the key screen of the selected application in a manner of expanding. 
     In particular, referring to  FIG.  24    to  FIG.  25   , if an execution menu item of ‘App 2’ application is selected via an application selection block  2406 , the image display device can display a 2 nd  key screen  2401  corresponding to the ‘App 2’ application in a manner of expanding. Along with the 2 nd  key screen  2401 , the image display device can display a key screen list including at least one different key screen. 
     The key screen list can display a part of a 3 rd  key screen  2402  while displaying the 2 nd  key screen  2401  in a manner of expanding. And, the key screen list can scroll the key screen included in the key screen list. Hence, if a user inputs a scroll signal or a direction key in a manner of dragging the key screen to the top or bottom using a pointer  2403 , the image display device can scroll the key screen included in the key screen list. 
     In particular, if a scroll signal is inputted in the key screen list in  FIG.  24   , the image display device can display the 3 rd  key screen  2402  or a different key screen by scrolling the key screen list. 
     According to embodiment, the 2 nd  key screen  2402  or the different key screen can include an advertisement key screen or a key screen of the application corresponding to the application selection menu item adjacent to the selection menu item of the selected application among the applications included in the application list. 
     And, the image display device can display detail information  2406  corresponding to the selected application. The detail information can include summary information on the selected application, review information, and information on a similar application. The image display device can include a detail information selection tab  2407  to browse the informations. 
     And, the image display device can display a 2 nd  application list  2403  including an application selection menu item. The 2 nd  application list  2403  can include an application selection block  2406 . In case that a position of the selection block  2406  changes, the image display device can convert the displayed key screens to correspond to the changed position of the selection block  2406 . 
     In particular, as shown in  FIG.  24   , in case that the selection block  2406  is positioned at the above of the ‘App 2’ application selection menu item, the 2 nd  key screen  2401  may correspond to a key screen including a screen shot of the ‘App 2’ application and the 3 rd  key screen may correspond to a key screen including a screen shot of a ‘Toyota’ application. And, in case that the selection block  2406  is positioned at the above of the ‘Toyota’ application, the key screen list is scrolled. Hence, as shown in  FIG.  25   , the 2 nd  key screen  2401  is scrolled up and a part of the 2 nd  key screen is displayed only. And then, a full screen of the 3 rd  key screen can be displayed. 
     And, if a selection signal of an application recommendation menu item  2404  is inputted, the image display device can receive a recommendation evaluation score for an application and a recommendation comment. If a selection signal of an application criticism menu item  2405  is inputted, the image display device can receive a criticism evaluation score for an application and a criticism comment. 
       FIG.  26    is a diagram of a display screen  2600  that a key screen of  FIG.  24    to  FIG.  25    is expanded to a full screen. 
     According to embodiment, if an application confirmation signal is inputted from a user in a state that the key screen in  FIG.  24    to  FIG.  25    and the 2 nd  application list are displayed, the image display device can display a key screen of an application corresponding to the confirmation signal in a manner of expanding to a full screen. 
     And, if an application execution signal is inputted from a user in a state that the display screen depicted in  FIG.  26    is displayed, the image display device can execute an application corresponding to the execution signal. 
     In particular, by doing so, since the user can determine whether to execute an application in a manner of clearly checking a screenshot of the application, thereby reducing malfunction of the image display device. 
       FIG.  27    to  FIG.  28    are diagrams of display screens  2700 / 2800  of a key screen including an application selection menu according to embodiment of the present invention. 
     According to embodiment, the image display device can display a 2 nd  application list  2701  in a state that the display screen in  FIG.  26    is displayed. 
     The 2 nd  application list  2701  can include selection menu items of an application available in the image display device and can include a selection block  2702  to select a prescribed application. 
     And, the image display device can convert a key screen, which is displayed as a full screen according to a movement of the selection block  2702 . In particular, in case that the selection block  2702  is positioned at the above of a ‘Toyota’ application in a 3 rd  application list  2701 , the image display device can display a key screen corresponding to the ‘Toyota’ application in the display screen  2700 . In case that the selection block  2702  moves to the above of an ‘IDEO’ application, the image display device can convert to display a key screen corresponding to the ‘IDEO’ application in the display screen  2800 . 
       FIG.  29    is a diagram of a display screen  2900  including a key screen conversion menu according to embodiment of the present invention. 
     According to embodiment, the image display device can display key screen conversion menu items  2901 / 2902  in a state that a key screen of a selected application is displayed in a full screen  2904  of a display screen of the image display device. 
     Referring to  FIG.  29   , for instance, in case that a 3 rd  application list  2903  is displayed to select an application and an application selection block  2905  is currently situated at the above of a ‘Marble Comic Book’ application, the image display device can display a key screen of the ‘Marble Comic Book’ application in the full screen  2904  of the display screen of the image display device. 
     And, the image display device can display a left side key screen conversion menu item  2901  and a right side key screen conversion menu item  2902 . If the left side key screen conversion menu item  2901  is selected by a user, the image display device can convert into a key screen of a ‘Toyota’ application, which is positioned at the left side of the current application selection block  2905  in the 3 rd  application list  2903 , as a full screen of the display screen of the image display device. On the contrary, if the right side key screen conversion menu item  2902  is selected by the user, the image display device can convert into a key screen of an ‘IDEO’ application, which is positioned at the right side of the current application selection block  2905  in the 3 rd  application list  2903 , as a full screen of the display screen of the image display device. 
     And, a selection signal of the key screen conversion menu item can be inputted in a manner that the user selects the key screen conversion menu item by moving a pointer. Or, according to embodiment, the selection signal of the key screen conversion menu item can be inputted by simply inputting a left/right direction key of a remote controller or a local key. 
     And, the key screen conversion menu item  2901 / 2902  can include the key screens of the left/right side as a reduced image in size. In particular, the left side key screen conversion menu item  2901  can be displayed as the reduced image of the key screen of the ‘Toyota’ and the right left side key screen conversion menu item  2902  can be displayed as the reduced image of the key screen of the ‘IDEO’. 
     Unlike the diagram depicted in  FIG.  29   , if the 2 nd  application list  2903  is displayed with a plurality of lines including application selection items, a top and bottom key screen conversion menu item as well as the left/right key screen conversion menu items can be displayed in a top side and the bottom side of the display unit, respectively. 
     In particular, via the aforementioned key screen conversion menu item, a user can simply convert a display screen into a preferring key screen without returning to an application selection menu again. 
     If it is explained again in summary, the image display device (e.g., a multimedia device and the like) according to one embodiment of the present invention includes a broadcasting network interface receiving a broadcasting program and an internet network interface receiving a data, which identifies at least one application. And, the multimedia device includes a display module configured to display the received broadcasting program in a 1 st  area of a screen and configured to display an application list including an icon, which corresponds to the at least one application, in a 2 nd  area of the screen and a user interface configured to receive a signal for selectin a specific icon among the icons displayed in the 2 nd  area. And, the multimedia device includes a controller configured to control a key screen corresponding to the selected specific icon to be displayed in a 3 rd  area of the screen. 
     For instance, the 3 rd  area includes a full image of the key screen corresponding to the selected specific icon and a part of image of a key screen corresponding to a 2 nd  icon adjacent to the selected specific icon. 
     And, the controller is configured to control the display module to display a moving image from a 1 st  timing point to a 2 nd  timing point, which corresponds to timing points that the selected specific icon is executed, in the 3 rd  area of the screen. 
     Moreover, the controller is configured to modify a key screen, which is displayed in the 3 rd  area according to a change of the icon selected in the 2 nd  area. In particular, it may be complementally interpreted with reference to  FIG.  2   ,  FIG.  22    to  FIG.  26   , and the like. 
     The image display device according to the present invention and a method of operating therefor may be non-limited to the aforementioned configurations and method of embodiments. The embodiments may be composed in a manner that a whole or a part of the each of the embodiments is selectively combined to achieve various modifications. 
     Meanwhile, a method of operating an image display device according to the present invention can be implemented with a code readable by a processor in a recording media readable by the processor, which is equipped in an image display device. The recording media readable by the processor may include all kinds of recording devices for storing data capable of being read by the processor. The examples of the recording media readable by the processor may include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disc, an optical data storing device and the like. And, implementing in a form of a carrier wave such as a transmission via an internet and the like is also included. The recording media readable by the processor are distributed to the computer systems connected by a network and codes readable by the processor can be stored and executed in a manner of being distributed. 
     While the present invention has been described and illustrated herein with reference to the preferred embodiments and diagrams thereof, the present invention may be non-limited to the aforementioned embodiments and it will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the present specification. Thus, it is intended that the present specification covers the modifications and variations of this invention that come within the scope of the appended claims and their equivalents. 
     MODE FOR INVENTION 
     Various embodiments of the present invention are described in the ‘best mode’ part. 
     INDUSTRIAL APPLICABILITY 
     Since the embodiments of the present invention are applicable to a broadcasting system or an image display device (e.g., a smart TV, 3DTV, and the like), industrial applicability of the present invention is admitted.