KR101637352B1 - Digital broadcast receiver and method for managing a content - Google Patents

Abstract

A digital broadcast receiver and a content management method are disclosed. The display unit displays a graphical user interface providing a list of contents including information on at least one content. The interface unit receives a hidden view command for displaying information about the contents for which the hidden function is set. The control unit checks whether or not there is content whose password is set among the contents for which the hiding function is set and controls the display unit to display a message for requesting the input of the password when there is the content whose password is set. And controls the information on the content whose password is set to be displayed in the graphic user interface.

Description

Technical Field [0001] The present invention relates to a digital broadcast receiver and a content management method,

The present invention relates to a digital broadcast receiver and a content management method, and more particularly, to a method for managing content in a digital broadcast receiver.

A broadcasting receiver transmits content produced by a broadcasting company through a radio wave transmission medium such as a terrestrial wave, a cable or a satellite broadcasting, and a user views the broadcasting through a receiver capable of receiving the transmission medium.

However, digital-based digital broadcasting technology has been developed and commercialized in existing analog broadcasting, so that it is possible to use real-time broadcasting, contents on demand (CoD), games, news It is possible to provide various types of content services to users.

An example of content service provision using the Internet network is IPTV (Internet Protocol TV). The IPTV refers to transmitting various information services, moving picture contents, broadcasting, etc. to an user's receiver using an Internet network. The Internet network can be implemented on various types of networks such as an optical fiber network, a coaxial cable network, a fiber to the home (FTTH), a telephone network, and a wireless network based on IP (Internet Protocol).

In the case of the service using the Internet network as described above, unlike general terrestrial broadcasting, bidirectionality can be added and the user can watch the content service he wants to watch at a convenient time.

When a variety of broadcasting services are provided, it is possible to provide information on the broadcasting service to the user of the broadcasting receiver, to set or request the broadcasting service, to set the display setting, audio setting, And an OSD (On-Screen Display) device for notifying the user of the information.

According to an aspect of the present invention, there is provided a digital broadcast receiver and a content management method for securely managing broadcast contents and protecting privacy of a user.

According to another aspect of the present invention, there is provided a computer-readable recording medium storing a program for causing a computer to execute a content management method.

According to an aspect of the present invention, there is provided a method of managing content in a digital broadcasting receiver, the method comprising: displaying a graphical user interface providing a list of contents including information on at least one content; A step of receiving a hidden view command for requesting to release a hidden function for a content for which a hidden function is set, checking whether there is content whose password is set among the contents for which the hidden function is set, A step of requesting input of a password, a step of inputting a password, and a step of displaying information on a content for which the input password is set on the graphic user interface.

Preferably, the content management method further comprises: receiving at least one content from the content list displayed in the graphic user interface and receiving a secret setting command for requesting a setting of the secret function; inputting a password for the selected content; And inputting a password, setting the input password to the selected content, and hiding information on the set content in the graphical user interface.

Preferably, the content management method may further include displaying information on content for which a secret is not set among the content for which the secret function is set.

Preferably, the password may be set differently for each content.

Preferably, the content may be stored content.

Preferably, the content management method further includes receiving a content playback command for requesting playback of the displayed content, and receiving the requested content from the server and displaying the received content. have.

According to another aspect of the present invention, there is provided a digital broadcasting receiver including a display unit for displaying a graphical user interface for providing a list of contents including information on at least one content, An interface unit for receiving a hidden view command for requesting a function cancellation, and an interface unit for confirming whether or not there is content whose password is set among the contents for which the hidden function is set, When the password is input, the control unit controls the display of the information about the content whose password is set in the graphic user interface.

Preferably, the interface unit receives at least one content from the content list displayed in the graphic user interface and receives a secret setting command for requesting a setting of the secret function, and the controller inputs the password for the selected content When the password is input, the input password is set to the selected content, and the information about the set content is hidden in the graphic user interface.

Preferably, the control unit controls the display unit to display information on contents for which a secret is not set among the contents for which the hidden function is set.

Preferably, the password may be set differently for each content.

Preferably, the content may be stored content.

Preferably, the control unit controls to receive the requested content from the server when a content playback command for requesting playback of the displayed content is input.

Preferably, the digital broadcast receiver may be a network TV.

According to the digital broadcast receiver and the content management method of the present invention, it is possible to prevent content information from being displayed, safely manage the content, and protect the privacy of the user.

1 is a diagram schematically illustrating an IPTV system according to an embodiment of the present invention,
2 is a schematic view of a network TV system according to an embodiment of the present invention,
Figure 3 is a schematic representation of a multicast scheme,
Figure 4 is a schematic representation of a unicast scheme,
FIG. 5 is a diagram showing a hierarchical structure for a content download service (CDS)
6 is a block diagram showing a configuration of a preferred embodiment of a digital broadcast receiver according to the present invention.
7 is a block diagram illustrating a configuration of another preferred embodiment of a digital broadcast receiver according to the present invention.
8 is a view showing a screen in which a message for logging in to a digital broadcast receiver according to the present invention is displayed,
9 is a view illustrating an embodiment of a screen on which a graphical user interface providing a content list is displayed;
10 is a view showing another embodiment of a screen in which a graphical user interface providing a content list is displayed;
11 is a view showing an embodiment of a screen in which a message requesting input of a password to be set in content is displayed,
12 is a view showing another embodiment of a screen in which a graphical user interface providing a content list is displayed;
13 is a view showing an embodiment of a screen on which a pop-up menu is displayed,
14 is a view showing another embodiment of a screen in which a graphical user interface providing a content list is displayed;
FIG. 15 shows an embodiment of a screen in which a message is displayed asking whether or not to display a password-set content;
16 is a view showing an embodiment of a screen in which a message for requesting the input of a password set in the content is displayed,
17 is a view showing another embodiment of a screen in which a graphical user interface providing a content list is displayed;
FIG. 18 is a flowchart illustrating a content management method according to an exemplary embodiment of the present invention,
FIG. 19 is a flowchart illustrating a content management method according to another exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The structure and operation of the present invention shown in the drawings and described by the drawings are described as at least one embodiment, and the technical ideas and the core structure and operation of the present invention are not limited thereby.

Although the terms used in the present invention have been selected in consideration of the functions of the present invention, it is possible to use general terms that are currently widely used, but this may vary depending on the intention or custom of a person skilled in the art or the emergence of new technology. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, it is to be understood that the term used in the present invention should be defined based on the meaning of the term rather than the name of the term, and on the contents of the present invention throughout.

A digital broadcast receiver means a broadcast receiver capable of receiving digital broadcasts transmitted as digital video and audio signals. Digital broadcasting refers to a broadcasting technology capable of bi-directional operation, reproduction and accumulation because it compresses and outputs a television signal in a digital form in which information signals are encoded and recorded unlike conventional analog broadcasting. Compared to analog broadcasting, such digital broadcasting is strong against noise and has a small data loss, and since it transmits separate error correction information, it is advantageous for error correction and provides a high resolution and clear screen. Also, unlike analog broadcasting, digital broadcasting can receive a broadcasting service from a broadcasting station and provide bidirectional service to provide information to a broadcasting station.

In the present invention, digital broadcasting is used not only for broadcasting through terrestrial, satellite, and cable but also for broadcasting transmitted through an Internet network. That is, digital broadcasting is defined as a concept including IP (Internet Protocol) broadcasting.

Also, in the present invention, a digital broadcast receiver includes a broadcast receiver capable of providing an Internet service to a viewer. Here, the Internet service includes information services such as CoD (Content's on Demand) service, YouTube service, weather, news, local information and search, entertainment services such as game and karaoke, TV mail, TV SMS And communication services, which can be provided through the Internet. Accordingly, the digital broadcast receiver in the present invention includes a network TV, a web TV, and a broadband TV. The broadcasting service may include an Internet service as well as a broadcasting service provided through terrestrial, satellite, and cable.

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

The server of the IPTV includes various servers such as a service discovery and selection server, a streaming server, a contents guide information server, a customer information server, a payment information server, ≪ / RTI >

Among the servers, the streaming server transmits moving picture data encoded by MPEG (Moving Picture Experts Group) 2, MPEG4, etc. stored in the server to a user via a network. A Real-Time Transport Protocol (RTP), an RTP Control Protocol (RTCP), or the like may be used as the protocol for the transmission.

When real-time streaming protocol (RTSP) is used, video stream reproduction may be controlled to a certain extent through a function called network trick play such as pause, replay, and stop . The protocols are examples and other real-time transmission protocols may be used according to embodiments.

The content guide information server is a server for providing information on the various contents provided. The content guide information is information corresponding to EPG (Electronic Program Guide) information and includes various kinds of information about the content. The content guide information server stores content guide information data and provides the stored data to a receiver.

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

The network system consists of internet based network and gateways. The Internet-based network may be based on IP, such as an optical fiber network, a coaxial cable network, a fiber to the home (FTTH) network, a telephone network, and a wireless network. The gateway can perform not only general data transmission but also multicast group management and quality of service (QoS) management using protocols such as Internet Group Management Protocol (IGMP).

An IPTV receiver is a receiver that receives data transmitted through the Internet and provides it to a user. The receiver includes an IPTV settop, a home net gateway, and an IPTV embedded TV.

In the case of a hybrid IPTV system, various contents of the Internet as well as various existing broadcast contents can be provided. In other words, it is possible to provide various broadcast contents such as terrestrial broadcast, cable broadcast, satellite broadcast, personal broadcast, etc., various Internet video contents, data contents other than video, and the like to users. The contents may be provided in real time or on demand depending on the request.

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

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

The content provider produces and provides various contents. 1, a terrestrial broadcaster, a cable SO (System Operator) or a MSO (Multiple System Operator), a satellite broadcaster, an Internet broadcasting transmitter (Internet broadcaster).

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

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

As a means for protecting the content transmitted in the IPTV system, a conditional access and a content protection may be used. As an example of the above-described conditional access and content protection, a scheme such as a cable card (CableCARD) and a DCAS (Downloadable Conditional Access System) can be used.

2 is a schematic diagram of a network TV system according to an embodiment of the present invention.

Referring to FIG. 2, a network TV is a digital broadcast receiver capable of receiving a digital broadcast, and also receiving Internet service and providing it to viewers. Network TV can be named broadband TV and includes web TV. Here, Web TV is a digital broadcasting receiver that receives and provides Internet services based on the Web.

The network TV can receive the Internet service directly from the content provider through the Internet. The network TV can request the retrieval of necessary information from the contents provider and receive the result and provide it to the user. In addition, the network TV can download the content and software requested by the user, play the downloaded content, or execute the downloaded software. It also receives a web page from a content provider and can display a web page received via a browser.

In addition, the network TV can receive a broadcasting service from a terrestrial broadcaster through a terrestrial wave as well as receive a broadcasting service via the Internet, and can receive a cable service provider (cable SO (System Operator) MSO (Multiple System Operator)), and may receive a broadcast service from a satellite broadcaster through a satellite.

A digital broadcast receiver can receive a broadcast service from a service provider or a content provider using a unicast or multicast method.

3 and 4 are diagrams schematically showing multicast and unicast methods, respectively.

Referring to FIGs. 3 and 4, the unicast method is a method of transmitting data between one sender and one receiver at a ratio of 1: 1. For example, in a case of a unicast method, when a receiver requests data from a server, the server transmits data to the receiver upon request. The multicast method is a method of transmitting data to a plurality of receivers of a specific group. For example, the server can transmit data to a plurality of pre-registered receivers at once. An Internet Group Management Protocol (IGMP) protocol may be used for the multicast registration.

FIG. 5 is a diagram illustrating a hierarchical structure for a content download service (CDS) broadcast of IPTV.

Referring to FIG. 5, a service provider transmits data contents for CDS to an IPTV receiver using a transmission protocol. The delivered data content for CDS is stored in the storage of IPTV. The stored CDS data contents can be executed by the user's request or the like. Here, the transmission protocol can be FLUTE (File Delivery over Unidirectional Transport) on the ALC / LCT over IP / UDP, DVB-STP, DVB data / object carousel, FTP (file transfer protocol) protocol, etc.) may be used. As the above-mentioned protocol, for example, other transmission protocols may be used.

If FLUTE is used as the transmission protocol, the presence or absence of the CDS service can be notified to the IPTV receiver through the service search and selection (SD & S), and the details about the contents can be recorded in the metadata of the TV Anytime format, Can be found through.

The CDS data contents may include various kinds of contents such as A / V contents, data contents, and game contents.

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

6 is a block diagram illustrating a configuration of a digital broadcast receiver according to an exemplary embodiment of the present invention.

Referring to FIG. 6, the digital broadcasting receiver 600 according to an exemplary embodiment of the present invention may include a tuner for receiving terrestrial broadcasting, cable broadcasting, satellite broadcasting, and the like. However, in the present invention, for convenience of description, a description will be made mainly of a process of processing content transmitted using the Internet network.

The digital broadcast receiver 600 includes a network interface unit 602, an IP manager 604, a service delivery manager 606, a demultiplexer 608, a data decoder 610, a decoder 612, a display unit 616, Manager 618, a service information database 622, a service discovery manager 624, a service control manager 626, a meta data manager 628, and a content database 630.

The network interface unit 602 receives packets received from the network and transmits the packets to the network. That is, the network interface unit 602 receives an IP packet for transmitting broadcast data from the service providing server through the network. Here, the broadcast data includes content, an update message indicating whether content is updated, metadata, service information data, and software code. In addition, the service information may include service information for a real-time broadcast service and service information for an Internet service.

The IP manager 604 is involved in delivering packets from a source to a destination with respect to packets received in the digital broadcast receiver 600 and packets transmitted from the digital broadcast receiver 600. [ The IP manager 604 classifies the received packets so as to correspond to the appropriate protocols and transmits the packets classified as the service delivery manager 606, the service discovery manager 624, the service control manager 626, and the metadata manager 628 .

The service delivery manager 606 is responsible for controlling the received service data. For example, when controlling real-time streaming data, RTP / RTCP (Real-Time Transport Protocol / RTP Control Protocol) may be used. When the real-time streaming data is transmitted using RTP, the service delivery manager 606 parses the received data packet according to the RTP and transmits the parsed data packet to the demultiplexer 608 or the control of the service manager 620 In the content database unit 630. [ The service delivery manager 606 controls the network reception information to be fed back to the server providing the service using the RTCP.

The demultiplexer 608 demultiplexes the received packets into audio, video, PSI (Program Specific Information) data, and transmits them to the decoder 612 and the data decoder 610, respectively.

The data decoder 610 decodes service information such as PSI (Program Specific Information). That is, the data decoder 610 receives and decodes the demultiplexed PSI section, the PSIP (Program and Service Information Protocol) section, the DVB-SI (Service Information) section, and the like in the demultiplexer 608.

The data decoder 610 decodes the received sections to create a database of service information, and stores the database of the service information in the service information database unit 622.

The decoder 612 decodes the video data and the audio data received from the demultiplexer 608. To this end, the decoder 612 includes an audio decoder 613 and a video decoder 604. The audio data decoded by the audio decoder 613 is supplied to the user through a speaker (not shown), and the decoded video data and contents are provided to the user through the display unit 616. [

The application manager 618 manages the overall state of the digital broadcast receiver 600, provides a user interface, and manages another manager. To this end, the application manager 618 includes a user interface manager 619 and a service manager 620.

The user interface manager 619 provides a GUI (Graphic User Interface) for the user using an OSD (On Screen Display) or the like, receives a key input from a user, and performs a receiver operation according to the input.

For example, the user interface manager 619 selects a content channel setting input for a predetermined content from a user. When the user interface manager 619 receives the key input regarding the channel change from the user, the user interface manager 619 transmits the key input signal to the service manager 620. Also, upon receiving a key input regarding a specific content channel or a request for update information for a specific content channel from the user, the key input signal is transmitted to the service manager 620.

The user interface manager 619 controls the virtual keyboard or the virtual keypad to be displayed on the screen. The user can select and input a specific virtual key on the virtual keyboard or the virtual keypad output by using the direction key and number key of the remote controller. For example, the user can select a virtual key to input a user ID and a password, and the user interface manager 619 can perform user authentication based on a user ID and a password input from the user.

The user interface manager 619 can receive a content list display command from a user. Upon receiving the content list display command, the user interface manager 630 controls to display a graphical user interface that provides a list of contents including information on at least one content. In addition, the user interface manager 619 may receive a hidden setting command and a hidden view command from the user. Here, the hidden setting command requests the setting of the hidden function. When the hidden setting command is input, the user interface manager 619 hides information about the requested content from the graphical user interface. When the hidden view command is input, the user interface manager 619 displays information on the content requested to be hidden in the graphic user interface. The user interface manager 619 can request a password to be set for the content when setting the hidden function, and can request a password set for the content when the hidden function is canceled.

The content in which the information is displayed in the graphic user interface may be content stored in the content database unit 630 or may be content in which the meta data is stored in the service information database unit 622. [ In the case where the metadata is stored in the service information database unit 622, the service manager 620 controls the content to be received from the service provider or the content provider when the content playback command for requesting the playback of the content is input .

The content database unit 630 allocates a content channel to the content, determines index data corresponding to the content, stores the index data in association with the allocated content channel information.

For example, if the content is a video or audio data 'growth video' stored in a broadcast receiver internal memory, the content database 630 stores 'D / Video / Growth Video ...' And stores it in association with channel 'ch 1'.

Also, for example, if the content is video or audio data stored in a network-connected server, the content channel database unit assigns the network address '198.7 // Sejong of Daehang / de // 11 times' Can be stored in association with the content channel 'ch 3'.

For example, if the content is the 'Yahoo Widget' of the Internet site, the content channel database unit stores the web address' http //: yahoo // wizet // ... 'of the corresponding Internet site in the allocated content channel' ch 2 You can save about.

On the other hand, according to the embodiment, when the broadcast receiver receives the change command of the content channel from the user, the broadcast receiver determines the index data corresponding to the changed content channel and outputs the corresponding content.

In this case, if the change command of the content channel is an increase or a decrease command of the channel, the controller reads the index data corresponding to the content of the next or previous content channel stored in the content database unit, Can be output.

The content database unit 630 may store authentication information for the Internet service list and the account of the server. Here, the Internet service list is a list including information on a content provider or a service provider that provides the Internet service. For example, the Internet service list may include at least one of a name of the server, connection information of the server, and guidance information on the service provided by the server. Here, the connection information of the server may be any one of an Internet address and a URL (Uniform Resource Locator).

When the application manager 618 receives the output command of the content channel from the user, the application manager 618 reads the index data stored in the content database unit and outputs the content.

When the application manager 618 receives the change command of the content channel from the user, the application manager 618 reads the index data of the changed channel and outputs the content.

At this time, if the channel change command is a channel increase or decrease input, the broadcast receiver reads the index data corresponding to the content of the next or previous order content channel stored in the content database unit, Output.

Meanwhile, when the user selects the content channel mode and selects the output command of the content channel, the application manager 618 can read the index data stored in the content database unit 630 and output the content.

The application manager 618 determines whether the channel selected by the user is a content channel or a general broadcast channel. If the channel is determined to be a content channel, the application manager 618 reads the index data stored in the content database unit 630 and outputs the content .

In addition, the application manager 618 may select the content channel mode, and when receiving the change command of the content channel, the application manager 618 may read the index data corresponding to the changed content channel and output the content command.

Here, the content may be video or audio data stored in the internal memory of the broadcast receiver, the index data may be a directory of the content, the content may be video or audio data stored in a server connected to the broadcast receiver, The data may be a network address of the content, the content may be a predetermined internet site, and the index data may be a web address of the internet site.

The application manager 618 may output a directory or a parent folder of the folder containing the content when a predetermined key input (e.g., a menu command) is selectively input from the output of the content.

In addition, the application manager 618 may output the update information or the change information when new content is updated in a directory or a folder containing the content, or when the content is changed in the directory or folder.

The application manager 618 can control to display information included in the Internet service list when the user Internet service mode request command is input. That is, the application manager 618 can control to display at least one of the name of the server included in the Internet service list, the connection information of the server, and guidance information on the service provided by the server. Here, the connection information can be displayed as a link for connecting to the server. That is, the user can click the connection information displayed on the screen to allow the digital broadcasting receiver to access the server. In addition, a specific picture or icon can be displayed for each server name included in the Internet service list. Here, the user Internet service mode request command can be input through the hot key on the remote controller, via the virtual keypad or the virtual key on the virtual keyboard, and can be input through the specific menu displayed on the screen.

When receiving the user Internet service request command, the application manager 618 accesses the server associated with the received user Internet service request command and controls to display a screen for requesting authentication information on the account of the connected server. Here, when the user clicks the connection information displayed on the screen, the user Internet service request command can be input, and when the user clicks the picture or icon of the corresponding server displayed on the screen, Can be input.

The display unit 616 outputs the content to the screen. Further, the display unit 616 displays the image generated by the browser on the screen.

The service manager 620 controls the manager associated with the service, such as the service delivery manager 606, the service discovery manager 624, the service control manager 626 and the metadata manager 628 and the IG-OITF client.

The service manager 620 also creates a channel map of a general broadcast and selects a channel using the channel map according to a key input received from the user interface manager 619. [ The service manager 620 receives the channel service information from the data decoder 610 and sets an audio / video PID (Packet Identifier) of the selected channel in the demultiplexer 608.

The service manager 620 may also execute a browser to process the received service. The browser can display the service information on the screen, and can control the content to be reproduced. The browser may also execute an application, an application associated with the content. In addition, the browser can process the web page provided by the server and display it on the screen. Here, the service information can be provided in the form of a web page from the server.

The service discovery manager 624 provides the information necessary to select a service provider providing the service. Upon receiving a signal regarding the channel selection from the service manager 620, the service discovery manager 624 searches for the service using the information.

The service control manager 626 is responsible for selection and control of services. For example, when a user selects a service such as IGMP or RTSP when selecting a Live Broadcasting service such as an existing broadcasting method and selects a service such as VOD (Video On Demand), RTSP is used to select a service, control . The RTSP protocol may provide a trick mode for real-time streaming. Also, the service control manager 926 can initialize and manage a session through the IMC gateway using an IP Multimedia Subsystem (IMS) and a Session Initiation Protocol (SIP). The protocols are one embodiment, and other protocols may be used, depending on the implementation.

The metadata manager 628 manages the metadata associated with the service and stores the metadata in the service information database 622. [

The service information database unit 622 stores the service information decoded by the data decoder 610, the meta data managed by the meta data manager 628, and information necessary for selecting a service provider provided by the service discovery manager 624 . The service information database unit 622 may store setup data and the like for the system.

The service information database unit 622 and the content database unit 630 may be implemented using a nonvolatile RAM (NVRAM) or a flash memory, respectively. The service information database unit 622 and the content database unit 630 may be logically divided into two areas Can be implemented.

The content database 630 may store content controlled to be stored in a PVR manager (not shown). The PVR manager collects metadata related to the stored content and generates additional information (thumbnail image, etc.) used for the user.

7 is a block diagram illustrating a configuration of another preferred embodiment of a digital broadcast receiver according to the present invention.

7, a digital broadcasting receiver 700 according to another embodiment of the present invention includes a video / audio processing unit 701, an interface unit 750, a storage unit 760, a display unit 770, A control unit 775, and a control unit 780.

The video / audio processing unit 701 processes the input video signal or audio signal so that the video or audio can be output to the display unit 770 and the audio output unit 775 of the digital broadcast receiver 700. To this end, the video / audio processing unit 701 may include a signal input unit 710, a demodulation unit 720, and a signal processing unit 740. The signal input unit 710 may include a tuner unit 711, an A / V input unit 712, a USB input unit 713, a wireless signal input unit 714, and a network unit 715.

The tuner unit 711 selects an RF broadcast signal corresponding to a channel selected by a user from among RF (Radio Frequency) broadcast signals received through an antenna, and outputs the selected RF broadcast signal as an intermediate frequency signal, Conversion. For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF), and if the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or voice signal (CVBS SIF). That is, the tuner unit 711 can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS SIF) output from the tuner unit 711 can be directly input to the signal processor 740.

In addition, the tuner unit 711 can receive RF carrier signals of a single carrier according to an Advanced Television System Committee (ATSC) scheme or RF carriers of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

According to another embodiment of the present invention, the digital broadcast receiver 700 may include at least two tuner units. In a case where at least two tuner units are provided, the second tuner unit selects an RF broadcast signal corresponding to a channel selected by the user among the RF broadcast signals received through the antenna, similar to the first tuner unit, Frequency signal or a baseband image or voice signal.

In addition, the second tuner unit may sequentially select RF broadcast signals of all broadcast channels stored through the channel memory function among the received RF broadcast signals, and convert the RF broadcast signals into an intermediate frequency signal, a baseband image, or a voice signal. And the second tuner unit may periodically perform the conversion operation of all the broadcast channels. Accordingly, the digital broadcast receiver 700 can display images of the broadcast signals converted through the first tuner unit, and can provide images of the plurality of channels converted through the second tuner unit in a thumbnail format. In this case, the first tuner unit converts a main RF broadcast signal selected by the user into an intermediate frequency signal, a baseband image or a voice signal, and the second tuner sequentially / periodically selects all RF broadcast signals except for the main RF broadcast signal It can be converted into an intermediate frequency signal or a baseband image or a voice signal.

The demodulator 720 receives the digital IF signal DIF converted by the tuner 711 and performs a demodulation operation. For example, when the digital IF signal output from the tuner unit 711 is of the ATSC scheme, the demodulation unit 720 performs 8-VSB (8-Vestigal Side Band) demodulation. As another example, when the digital IF signal output from the tuner unit 711 is a DVB system, the demodulator 720 performs CODDMA (Coded Orthogonal Frequency Division Modulation) demodulation.

Also, the demodulator 720 may perform channel decoding. For this, the demodulator 720 includes a Trellis decoder, a de-interleaver, and a Reed Solomon decoder to perform trellis decoding, deinterleaving, Solomon decoding can be performed.

The demodulation unit 720 may perform demodulation and channel decoding and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

The stream signal output from the demodulation unit 720 may be input to the signal processing unit 740. The signal processing unit 740 performs demultiplexing, signal processing, and the like, and then outputs an image to the display unit 770 and outputs a voice to the voice output unit 775.

Further, in the case of a digital broadcasting receiver having at least two tuner units, a corresponding number of demodulators may be provided. The demodulator may be provided separately according to the ATSC scheme and the DVB scheme.

In addition, the signal input unit 710 can connect the external device and the digital broadcast receiver 700. The external device refers to various types of video or audio output devices such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camcorder, and a computer (notebook). The signal input unit 710 inputs a video, audio, or data signal of an external device to a signal processing unit 740 capable of processing a video signal and a voice signal of the digital broadcast receiver 700.

The A / V input unit 712 of the signal input unit 710 may include an Ethernet terminal, a USB terminal, a Composite Video Banking Sync (CVBS) (Digital Interface) terminal, HDMI (High Definition Multimedia Interface) terminal, RGB terminal, D-SUB terminal, IEEE 1394 terminal, SPDIF terminal, Liquid, HD terminals, and the like. The CVBS terminal, and the S-video terminal may be converted into a digital signal and input to the signal processing unit 740. The digital signal input through the other input terminal may be input to the signal processing unit 740 without performing the analog / digital conversion process.

The USB input unit 713 can input video and audio signals through the USB terminal.

The wireless signal input unit 714 can connect the digital broadcast receiver 700 to a wireless network. The digital broadcast receiver 700 may be connected to the wireless Internet through a wireless signal input unit 714. [ For wireless Internet access, WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) In addition, the wireless signal input unit 714 can perform short-range wireless communication with other electronic devices. For example, it can be connected to other electronic devices in accordance with Bluetooth, RFID (Radio Frequency Identification), IrDA (Infrared Data Association), UWB (Ultra Wideband) and ZigBee communication standards.

In addition to the radio signal input unit 714, an Ethernet terminal or a signal input unit 710 may further include a network unit 715 for efficient network connection and management, The receiver 700 can be connected to the network through the PSTN, LAN, CABLE, and the like.

Meanwhile, the signal input unit 710 may be connected to various set-top boxes via at least one of the various terminals described above to perform input / output operations with the set-top box. For example, when the set-top box is a set-top box for an IP (Internet Protocol) TV, the video, audio and data signals processed in the settop box for IPTV can be transmitted to the controller 760, The control unit 760 may transmit the processed signals to the IPTV set-top box.

Therefore, the digital broadcasting receiver according to the present invention can process signals transmitted through a wired or wireless network in addition to broadcast signals through a radio wave medium, signals from external input devices, and the like. That is, the digital broadcast receiver according to the present invention receives broadcast data provided by a service providing server through a network. Here, the broadcast data includes content, an update message indicating whether content is updated, metadata, service information data, and software code. In addition, the service information may include service information for a real-time broadcast service and service information for an Internet service.

The signal processing unit 740 demultiplexes the received stream signal, for example, an MPEG-2 TS, into a video signal, a voice signal, and a data signal, respectively. Also, the signal processing unit 740 can perform image processing of the demultiplexed video signal. For example, if the demultiplexed video signal is a coded video signal, it can be decoded. Specifically, when the demultiplexed video signal is an MPEG-2 standard-coded video signal, it can be decoded by an MPEG-2 decoder. Also, if the demultiplexed video signal is a video signal of the H.264 standard according to the DMB (Digital Multimedia Broadcasting) scheme or DVB-H, it can be decoded by the H.264 decoder.

The signal processor 740 may process the brightness, tint, and color of the video signal. The video signal processed by the signal processing unit 740 is displayed through the display unit 770. Also, the signal processor 740 can perform the voice processing of the demultiplexed voice signal. For example, if the demultiplexed speech signal is a coded speech signal, it can be decoded. Specifically, when the demultiplexed speech signal is an MPEG-2 standard encoded speech signal, it can be decoded by an MPEG-2 decoder. In addition, if the demultiplexed speech signal is a coded voice signal of the MPEG 4 BSAC (Bit Sliced Arithmetic Coding) standard according to a terrestrial DMB (Digital Multimedia Broadcasting) scheme, it can be decoded by an MPEG 4 decoder. Also, if the demultiplexed speech signal is an encoded audio signal of the AAC (Advanced Audio Codec) standard of MPEG 2 according to the satellite DMB scheme or DVB-H, it can be decoded by the AAC decoder.

The signal processor 740 may process a base, a treble, a volume control, and the like.

The voice signal processed by the signal processing unit 740 is output to the voice output unit 775 by voice. In addition, the signal processor 740 can perform data processing of the demultiplexed data signal. For example, if the demultiplexed data signal is a coded data signal, it can be decoded. The encoded data signal may be EPG (Electronic Program Guide) information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel. For example, the EPG information may be ATSC-PSIP (ATSC-Program and System Information Protocol) information in the case of the ATSC scheme and DVB-Service Information (DVB-SI) information in case of the DVB scheme . The ATSC-PSIP information or DVB-SI information may be information included in the above-described stream, i.e., the header (4 bytes) of the MPEG-2 TS.

In addition, the signal processor 740 may perform an OSD (On Screen Display) process. Specifically, the signal processing unit 740 generates a signal on the screen of the display unit 770 based on at least one of the image-processed video signal and the data-processed data signal, and the user input signal input through the remote controller 705 Various information can be displayed in graphic or text.

The storage unit 760 may store a program for each signal processing and control in the control unit 780 or may store a video signal, a voice signal, or a data signal subjected to signal processing. In addition, the storage unit 760 may perform a function for temporarily storing video, audio, or data signals input to the signal input unit 710. [

The storage unit 760 may store the Internet service list and may store the authentication information for the account of the server.

The storage unit 760 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory) RAM, ROM (EEPROM, etc.), and the like. The digital broadcast receiver 700 can reproduce files (moving picture files, still picture files, music files, document files, etc.) stored in the storage unit 760 and provide them to users.

The control unit 780 controls the overall operation of the digital broadcast receiver 700. The control unit 780 can receive the signal transmitted from the remote control device 705 through the interface unit 750. [ The controller 780 determines a command input by the user to the remote controller 705 through the received signal and controls the digital broadcast receiver 700 to correspond to the command. For example, when a content list display command is input from the remote controller 705, the controller 780 displays a graphical user interface that provides a content list. In addition, the control unit 780 can receive the hidden setting command, the hidden viewing command, and the content reproducing command from the remote controller 705, and can control the corresponding operation to be performed on the received command.

As another example, when the user inputs a predetermined channel selection command, the control unit 780 controls the tuner unit 711 so that the selected channel is input through the signal input unit 710. In addition, the signal processor 740 controls the video signal and the audio signal of the selected channel to be processed. In addition, the control unit 740 controls the signal processing unit 740 so that the channel information selected by the user can be outputted through the display unit 770 or the audio output unit 775 together with the processed video signal and audio signal.

As another example, the user can input another kind of video or audio output command through the remote control device 705. [ That is, the user may desire to watch the camera or camcorder image signal inputted through the USB input unit 713 instead of the broadcast signal. The control unit 780 processes the video signal or audio signal input through the USB input unit 713 of the signal input unit 710 through the signal processing unit 740 and outputs the video signal or audio signal to the display unit 770 or the audio output unit 775 Audio processing unit 701 so that the video /

The control unit 780 discriminates a user command input to the user input unit 755 formed in the digital broadcast receiver 700 and controls the digital broadcast receiver 700 to correspond to the user command inputted through the remote control device 705 . For example, a user inputs a digital broadcast receiver 700 on / off command, a channel change command, a volume change command, a content list display command, a hidden setting command, a hidden view command, and a content playback command through a user input unit 755 can do. The user input unit 755 may be a button or a key formed in the digital broadcast receiver 700. The control unit 780 can determine whether the user input unit 755 is operated and control the digital broadcast receiver 700 accordingly.

The control unit 780 may also execute a browser to process the received service. The browser can display the service information on the screen, and can control the content to be reproduced. The browser may also execute an application, an application associated with the content. In addition, the browser can process the web page provided by the server and display it on the screen. Here, the service information can be provided in the form of a web page from the server. The graphical user interface providing the list of contents may also be a browser.

FIG. 8 is a diagram illustrating a screen for displaying a message for logging into a digital broadcast receiver according to the present invention.

Referring to FIG. 8, the display unit 700 displays a login message 800 requesting a user ID and a password. The control unit 780 may control the login message 800 to be displayed at the time of booting, user login request, or upon accessing a content provider or a service provider.

The user can input the user ID and the user password using the remote control device 705 and the user input unit 755. The display unit 770 displays the user ID and the user password, Password is displayed. Also, the user can click the button (Login) to input the user authentication execution command.

When the user authentication execution command is input, the control unit 780 performs user authentication based on the input user ID and the user password.

9 is a view showing an embodiment of a screen displaying a graphical user interface for providing a content list.

Referring to FIG. 9, the display unit 770 displays a graphical user interface 900 that provides a list of contents. The controller 780 controls the graphic user interface 900 to be displayed on the initial screen and controls the graphic user interface 900 to be displayed when the content list display command is input.

The graphical user interface 900 includes a selection area 910 and a list area 920. At least one folder name may be displayed in the selection area 910. Here, the folder name may indicate the folder created in the storage unit 700 and indicate the type of the content. The types of content can be classified according to the genre of the content, classified according to the content provider providing the content, and can be classified according to the rating of the content. When the folder name indicates the kind of content, the control unit 780 can calculate the folder name from the metadata.

In the list area 920, information about contents belonging to a folder designated by the folder name selected from the folder names can be displayed. Here, the information on the content may be a content name, a kind of content, a content reproduction time, and a name of a content provider providing the content.

The user can select the folder name (folder 2) by moving the pointer 901 and placing the folder 901 in the folder name (folder 2) and clicking the predetermined button (for example, the select button) on the remote control device 800. When the folder name (folder 2) is selected, the display 911 of the folder name (folder 2) is changed and the information cp1, cp2, cp3, cp4, cp5 for each content belonging to the folder name (folder 2) Area 920. < / RTI >

10 is a view showing another embodiment of a screen displaying a graphical user interface for providing a content list.

10, the user can select at least one of CP1, CP2, CP3, CP4, and CP5, which is information about each content displayed in the graphical user interface 1000, using the pointer 1001. [

When the user selects CP1, CP2 and CP4, an indication is displayed on the screen indicating that CP1, CP2 and CP4 are selected. At this time, the user can input the hidden setting command and set the hidden function to the selected CP1, CP2 and CP4. Here, the hidden function is to prevent information of the content from being displayed. CP1, CP2, and CP4 are not displayed in the graphical user interface 1000 when the hidden function is set to CP1, CP2, and CP4.

A user can input a hidden setting command by clicking a predetermined button (not shown) provided by the graphical user interface 1000, and can input a hidden setting command by clicking a menu item of a popup menu that is displayed separately.

11 is a view illustrating an example of a screen in which a message requesting input of a password to be set in content is displayed.

Referring to FIG. 11, when a hidden setting command is input, the controller 780 controls the display unit 770 to display a message 1100 requesting a password.

The message 1100 includes a password entry area 1110, an input button 1120, and a non-entry button 1130. The user can input the password by selecting the password input area 1110 and can input the password setting command by clicking the input button 1120. [ When the password setting command is input, the control unit 780 sets the inputted password to the contents indicated by the selected information. For example, the control unit 780 sets the inputted password in the contents respectively designated by the CP1, CP2, and CP4 selected in FIG.

Also, the user can click the non-enter button 1130 to input a password non-setting command. When a password not set command is input, the control unit 780 sets a hidden function in the content indicated by the selected information without setting a password in the content.

12 is a view showing another embodiment of a screen displaying a graphical user interface for providing a content list.

Referring to FIG. 12, when the hidden function is set on CP1, CP2, and CP4 selected in FIG. 10, the graphical user interface 1200 does not display CP1, CP2, and CP4. That is, the graphical user interface 1200 hides CP1, CP2, and CP4, and displays CP3 and CP5.

13 is a view showing an embodiment of a screen on which a pop-up menu is displayed.

13, when a predetermined key signal (e.g., a menu button signal) is input from the remote control device 705 or the user input unit 755 while the focus is placed on the graphic user interface 1300, Menu 1350 may be displayed.

The pop-up menu 1350 may include at least one of "hide setting", "hidden view", and "play" as menu items. The user can input a hidden view command by clicking on "hidden view" using the pointer 1301. [

14 is a view showing another embodiment of a screen on which a graphical user interface providing a content list is displayed.

Referring to FIG. 14, when a hidden view command is input, the controller 780 determines whether there is content whose password is set among the contents for which the hidden function is set. If there is no content whose password is set, To be displayed on the graphical user interface.

If no password is set for each content pointed to by CP1, CP2 and CP4, the control unit 780 controls the graphic user interface 1400 to select CP1, CP2, and CP4 in addition to CP3 and CP5 displayed in the graphical user interface 1200 of FIG. CP2 and CP4 to be displayed further.

When a specific folder is selected and a hidden setting command is input, the control unit 780 controls the graphical user interface 1400 so that a specific folder is hidden. For example, when a folder (folder 3 is selected in the graphical user interface 900 of FIG. 9, and a hidden setting command is input, the graphical user interface 1400 hides the folder (folder 3).

15 is a view showing an example of a screen in which a message asking whether or not to display a password-set content is displayed.

Referring to FIG. 15, when a hidden view command is input, the control unit 780 determines whether or not there is content whose password is set among the contents for which the hidden function is set. If there is content whose password is set, And a message 1500 asking whether or not it is displayed.

The message 1500 includes a guidance message for asking if the password-set content is to be viewed, a button (YES), and a button (NO).

16 is a view showing an example of a screen in which a message requesting input of a password set in the content is displayed.

Referring to FIG. 16, when a button (example) is clicked in FIG. 15, the control unit 780 controls a message 1600 requesting a password to be displayed. Here, the control unit 780 may check whether there is content whose password is set among the contents for which the hidden function is set, and may control the message 1600 to be displayed immediately when there is the content whose password is set.

The message 1600 may include a password entry area 1610, an input button 1620, and a non-entry button 1630. The user can input the password using the remote control device 705 and the user input unit 755, and the password input area 1610 displays the inputted password. Also, the user can input the password input command by clicking the input button 1620. [ When the password input command is input, the controller 780 controls the information on the input password-set content to be displayed on the graphic user interface. If the password set in the content indicated by CP1, CP2 and CP4 is the password displayed in the password input area 1610, the control unit 780 adds the CP3 and CP5 displayed in the graphical user interface 1200 of FIG. 12 And controls the graphical user interface to further display CP1, CP2, and CP4.

Also, the user can click the non-enter button 1630 to input a password non-enter command. When the password non-enter command is input, the controller 780 may control the information on the content for which the password is not set to be displayed on the graphic user interface.

17 is a view showing another embodiment of a screen displaying a graphical user interface for providing a content list.

17, when a password is not set in CP1 and CP2 and a password is set in CP4, when a password non-input instruction is inputted, the graphical user interface 1700 is displayed on the graphical user interface 1200 of FIG. 12 In addition to CP3 and CP5, further displays CP1 and CP2.

18 is a flowchart illustrating a content management method according to an exemplary embodiment of the present invention.

Referring to FIG. 18, the display unit 770 displays a graphical user interface (S1800). Here, the graphical user interface may be the graphical user interface 900 shown in FIG.

The interface unit 750 selects at least one piece of information on the content displayed in the graphic user interface unit (S1810). Herein, at least one piece of information indicative of the information about the contents can be selected according to the method described above with reference to FIG.

The control unit 780 checks whether a hidden setting command is input (S1820).

When the hidden setting command is input, the control unit 780 requests the input of the password for the content indicated by the selected information (S1830). Here, the control unit 780 can control the display of the message 1100 shown in FIG.

The control unit 780 checks whether a password is input (S1840).

When the password is input, the control unit 780 sets a password in the content indicated by the selected information (S1850).

The control unit 780 hides the information about the content indicated by the selected information from being displayed in the graphical user interface (S1860).

If the password is not input, the control unit 780 performs step S1860.

FIG. 19 is a flowchart illustrating a content management method according to another exemplary embodiment of the present invention.

Referring to FIG. 19, the control unit 780 displays a graphical user interface (S1900). The graphical user interface may be the graphical user interface 900 shown in FIG. 9 and the graphical user interface 1200 shown in FIG.

The control unit 780 confirms whether a hidden view command is input (S1905). Here, the user can input a hidden view command through the menu items included in the pop-up menu 1350 shown in FIG.

If a hidden view command is input, the control unit 780 determines whether there is a content whose password is set among the contents for which the hidden function is set (S1910).

If the content having the password is not present, the control unit 780 controls the information on the content for which the hidden function is set to be displayed on the graphic user interface (S1915). Here, the graphical user interface may be the graphical user interface 1400 shown in FIG.

If the content having the password is present, the control unit 780 controls to display a message for requesting the password input (S1920). Here, the message may be the message 1600 shown in FIG. Also, before displaying the message, the control unit 780 may display the message 1500 shown in FIG.

The control unit 780 confirms whether or not a password is input (S1925).

If the password is not input, the control unit 780 performs step S1915.

If the password is input, the control unit 780 determines whether the content having the input password is present (S1930).

If there is no content whose input password is set, the control unit 780 performs step S1915.

If there is content to which the input password is set, the control unit 780 controls the information on the content to be displayed on the graphic user interface (S1935). Here, the control unit 780 may control the display unit to display more information about the content whose password is not set among the contents for which the hidden function is set.

The control unit 780 determines whether a content reproduction command for requesting reproduction of the content is input (S1940).

When the content reproduction command is input, the signal input unit 710 receives the content from the content provider (S1945).

The display unit 770 displays the received content on the screen (S1950).

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

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the embodiment in which said invention is directed. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims and their equivalents. Will be described with reference to the drawings. The structure and operation of the present invention shown in the drawings and described by the drawings are described as at least one embodiment, and the technical ideas and the core structure and operation of the present invention are not limited thereby.

Although the terms used in the present invention have been selected in consideration of the functions of the present invention, it is possible to use general terms that are currently widely used, but this may vary depending on the intention or custom of a person skilled in the art or the emergence of new technology. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, it is to be understood that the term used in the present invention should be defined based on the meaning of the term rather than the name of the term, and on the contents of the present invention throughout.

Claims (13)

Claim 1 has been abandoned due to the setting registration fee. A method for managing content in a digital broadcast receiver,
Displaying a graphical user interface providing a list of content including information about at least one content;
Receiving a hidden view command for requesting to release a hidden function for contents for which a hidden function is set;
Confirming whether there is content whose password is set among the contents for which the hidden function is set;
Requesting input of a password when the content having the password is set;
Receiving a password and confirming whether there is a content whose password is set in the content among the contents for which the password is set; And
And displaying information on the input content with the password on the graphic user interface. Claim 2 has been abandoned due to the setting registration fee. The method according to claim 1,
Receiving at least one content from a content list displayed in the graphic user interface and receiving a hidden setting command for requesting a setting of a hidden function;
Requesting input of a password for the selected content; And
Inputting a password, setting the input password to the selected content, and hiding information on the set content in the graphical user interface. Claim 3 has been abandoned due to the setting registration fee. The method according to claim 1,
Further comprising the step of displaying information on content for which a secret is not set among the contents for which the hidden function is set. Claim 4 has been abandoned due to the setting registration fee. The method of claim 1,
Wherein the password is set differently for each content. Claim 5 has been abandoned due to the setting registration fee. The method according to claim 1,
Wherein the content is stored content. Claim 6 has been abandoned due to the setting registration fee. The method according to claim 1,
Receiving a content playback command for requesting playback of the displayed content; And
Receiving the requested content from the server, and displaying the received content. A display unit for displaying a graphical user interface for providing a content list including information on at least one content;
An interface unit for receiving a hidden view command for requesting to release a hidden function for contents for which a hidden function is set; And
And a control unit,
Wherein,
Whether or not there is content whose password is set among the contents for which the hidden function is set,
If there is content for which the password is set, controls the display unit to display a message for requesting a password,
When the password is input, it is checked whether the content whose password is set is present among the contents for which the password is set,
And controlling the display unit to display information on the content whose password is set in the graphic user interface. 8. The method of claim 7,
Wherein the interface unit receives at least one content from the content list displayed in the graphical user interface and receives a hidden setting command for requesting a setting of the hidden function,
The control unit requests the input of a password for the selected content, sets the input password to the selected content when the password is input, and controls the information about the set content to be hidden in the graphic user interface Wherein the digital broadcast receiver is a digital broadcast receiver. 8. The method of claim 7,
Wherein,
And controls to display information on content for which a secret is not set among the contents for which the hidden function is set. 8. The method of claim 7,
Wherein the password is set differently for each content. 8. The method of claim 7,
Wherein the content is stored content. 8. The method of claim 7,
Wherein,
Wherein the controller controls to receive the requested content from a server when a content playback command for requesting playback of the displayed content is input. 8. The method of claim 7,
Wherein the digital broadcast receiver is a network TV.

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