JP2010087816A - Broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide, via a network, content on which viewing restriction is imposed in such a form that an external playback device can play back the content without limiting an applicable system. <P>SOLUTION: A broadcast receiver includes a server 18 and a scrambler 16. The server 18 distributes broadcast content stored in a content recording and playback section 15 to a content playback device 200 via a home network 100, generates a content list on which the broadcast content stored in the content recording and playback section 15 are sorted into viewing restricted broadcast content and viewing non-restricted broadcast content, and provides the content list to the content playback device 200 via the home network 100. The scrambler 16 scrambles the viewing restricted broadcast content and the content list including the viewing restricted broadcast content using a password as a key. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a broadcast receiving apparatus, and more particularly to a broadcast receiving apparatus that provides recorded content to an external playback device via a network.

  Conventionally, a broadcast receiving apparatus that receives and reproduces BS broadcast or CS broadcast collates rating information embedded in program information for viewing age restriction with age restriction information set by the user in the broadcast reception apparatus, A function to limit the viewing age is installed. For example, if the user has set a viewing age of “16 years old” in the broadcast receiving apparatus, he / she wants to view content designated by R-18 (which includes expressions inappropriate for viewing under 18 years old). Password input is required, and a restriction is imposed so that viewing is not possible unless the password set by the user in advance in the broadcast receiving apparatus is correctly input.

  On the other hand, in recent years, home devices such as DLNA (Digital Living Network Alliance) have been released, and the broadcast content recorded in the above-described broadcast receiving device is provided to DLNA compatible playback devices installed at different locations via the home network, It can be played back by this playback device. DLNA described in the claims and specification is a registered trademark.

  However, when normal content that is not subject to viewing restrictions is provided to an external playback device via a network, the content can be played back on the playback device. In the case of providing the content, the viewing restriction cannot be released in the playback device, and the content cannot be played back. For this reason, even if a system capable of sharing content via a network using DLNA or the like has become widespread, the broadcast receiving device cannot provide content that is subject to viewing restrictions in a format that can be played back by an external playback device.

  As these countermeasures, for example, there is one disclosed in Patent Document 1. The content distribution system of Patent Document 1 has a server that holds and manages personal information representing the characteristics of each user associated with the installation location of the playback terminal, and when the management information is generated from the contents of the content list, The user's personal information associated with the playback terminal is acquired from the server, and the information that is output as management information is reflected to reflect this personal information, and viewing restrictions according to the user being used Has been implemented.

JP 2007-158414 A

  However, in the technique disclosed in Patent Document 1 described above, it is assumed that a user who has registered in advance uses a playback terminal, and the applicable system performs registration for each room such as a hotel. There was a problem of being limited to.

  The present invention has been made to solve the above-described problems, and does not limit the applicable system, and the content on which viewing is restricted in a format that can be played back by an external playback device is networked using DLNA or the like. An object of the present invention is to obtain a broadcast receiving apparatus that is provided via.

The broadcast receiving apparatus according to the present invention is a broadcast receiving apparatus that receives, reproduces, and records broadcast content, a storage unit that records and stores the broadcast content, and a network that stores the broadcast content stored in the storage unit. A server that generates a content list in which the broadcast content is classified into broadcast content with viewing restriction and broadcast content with non-viewing restriction, and provides the content list to the external device via the network. And a scrambler that scrambles the content list including the broadcast content with viewing restriction and the broadcast content with viewing restriction using a password as a key.

  According to the present invention, broadcast content stored in the storage unit is distributed to an external device via a network, and the broadcast content stored in the storage unit is classified into broadcast content with viewing restrictions and broadcast content with non-viewing restrictions. A server that generates a content list and provides the content list to an external device via a network, and a scrambler that scrambles the content list including the broadcast content with viewing restrictions and the broadcast content with viewing restrictions using a password as a key. Therefore, it is possible to provide content with viewing restrictions in a format that can be played back by an external device via a network using DLNA or the like, without limiting the applicable system.

Embodiment 1 FIG.
1 is a block diagram showing a configuration of a broadcast receiving apparatus according to Embodiment 1. FIG.
The broadcast receiving apparatus 1 includes an antenna 2, a tuner 3, a demultiplexer 4, a decoder 5, an audio processing unit 6, a speaker 7, a graphics processing unit 8, a display unit 9, a program information management unit 10, a remote controller 11, and a remote control receiving unit. 12, a system control unit 13, a user interface unit 14, a content recording / playback unit (storage unit) 15, a scrambler 16, a network interface unit 17, a server 18, and a password management unit 19. The broadcast receiving apparatus 1 is connected to a content playback apparatus 200 that plays back content via the home network 100.

  The antenna 2 receives the broadcast wave, and the tuner 3 extracts a stream including the program selected by the user from the broadcast wave. The demultiplexer 4 separates content and program information, which are video data and audio data of a desired program, from the stream extracted by the tuner 3. The separated content is output to the decoder 5, and the program information is output to the program information management unit 10. The decoder 5 decodes video data and audio data. The audio processing unit 6 converts the decoded audio data into an audio signal, and the speaker 7 reproduces the converted audio signal. The graphics processing unit 8 integrates the decoded video data and the user interface input from the user interface unit 14 and converts them into a format that can be displayed on the display unit 9. The display unit 9 displays the video signal input from the graphics processing unit 8.

The program information management unit 10 stores and manages the program information of all channels separated by the demultiplexer 4 for a certain period. The program information includes not only program information related to the currently viewed program content, but also program information of other time periods and, in some cases, program information of other channels. By organizing and storing these program information, an electronic program guide (EPG) is formed. In addition, in the program information managed by the program information management unit 10, information related to viewing age restriction is included along with channel information, program name, broadcast time, program description, genre, performers, etc. of each program. include. The program information management unit 10 can determine whether the content has a viewing age restriction based on the information regarding the viewing age restriction.

The remote controller 11 is an input means used when the user controls the broadcast receiving apparatus 1. The remote control receiving unit 12 receives an input signal from the remote control 11 and transmits it to the system control unit 13. The system control unit 13 outputs the input signal input from the remote control reception unit 12 to the user interface unit 14. In response to an instruction input from the user interface unit 14, the broadcast receiving apparatus 1 as a whole is controlled.

The user interface unit 14 receives a remote control signal input by the user and controls the system control unit 13 in accordance with the screen display state to be held. The content recording / playback unit 15 records and stores broadcast content designated by the user for recording and controls recording and playback. The scrambler 16 scrambles content that has a viewing age restriction among the contents extracted from the content recording / playback unit 15 and scrambles a list portion of the content that has a viewing age restriction. The network interface unit 17 distributes the content to the content reproduction device 200 connected via the home network 100.

The server 18 receives an input of a command from the content playback device 200 via the home network 100, and controls the list of recorded content and the provision of the recorded content to the content playback device 200 based on this command. The password management unit 19 manages a password for recording, playing back, and scrambling the content with the viewing age restriction.

  Next, the operation of the broadcast receiving apparatus 1 will be described. First, the case where the broadcast receiving apparatus 1 distributes the recorded content recorded in the content recording / reproducing unit 15 via the home network 100 and the content reproducing apparatus 200 reproduces the recorded content while receiving the streaming is described. FIG. 2 is a flowchart showing the operation of the broadcast receiving apparatus that provides the recorded content. In addition, the broadcast receiving device 1 and the content reproduction device 200 are each compliant with the DLNA standard, and the content recording / reproduction unit 15 records two pieces of normal content and two contents with viewing age restrictions. Shall.

A content list request command (Browse in DLNA) requesting provision of a content list of content recorded in the content recording / playback unit 15 from the content playback device 200 via the home network 100 to the network interface unit 17 of the broadcast receiving device 1. ) Is input (step ST1). The network interface unit 17 notifies the server 18 of this content list request, and the server 18 acquires content information of the content recorded in the content recording / playback unit 15 (step ST2).

The server 18 classifies the content information acquired in step ST2 with reference to the content management data stored with the content, and classifies the content with the viewing age restriction and the content with the viewing age restriction not applied. A list is created, and this content list is documented in XML (Extensible Markup Language) (step ST3).

FIG. 3 is an explanatory diagram showing an example of a content list that is made into an XML document. In FIG. 3, content 301 and content 302 indicate XML documents of recorded contents that are not subject to viewing age restrictions, and content 303 indicates XML documents of two recorded contents that are subject to viewing age restrictions. The contents 301 and 302 are made into XML documents so that they can be interpreted by a normal DLNA-compliant content reproducing apparatus 200. On the other hand, the content 303 is surrounded by an XML tag “rating content list” that cannot be recognized by the normal DLNA-compliant content playback apparatus 200.

Next, when the content list includes content with the viewing age restriction, the server 18 outputs the content list portion with the viewing age restriction to the scrambler 16 and also the viewing held by the password management unit 19. An age restriction release password is acquired and output to the scrambler 16 (step ST4). The scrambler 16 scrambles the content list part with the viewing age restriction using the viewing age restriction release password as a key, converts it into a description that cannot be easily deciphered, and returns it to the server 18 (step ST5). The server 18 converts the scrambled content list portion into a hexadecimal character string and embeds it in the XML document content list in step ST3 (step ST6).

A content list after such scramble conversion is shown in FIG. The list part of the content 303 with the viewing age restriction is scrambled and converted into the description content shown in the content 303 ′. Thereafter, the server 18 outputs the content list after the scramble conversion to the content reproduction device 200 via the network interface unit 17 and the home network 100 (step ST7).

  When the content playback apparatus 200 that has received the content list in step ST7 is a general DLNA-compliant content playback apparatus 200, only a normal content list conforming to the DLNA standard can be displayed, and viewing age restrictions are imposed. The content list part cannot be displayed. On the other hand, when the content playback apparatus 200 can understand a special XML tag “rating content list”, has a descrambling function necessary for descrambling, and possesses the same password used for scrambling. The content list portion described and scrambled and converted inside the XML tag “rating content list” can be normally descrambled and displayed.

  Here, description will be made on the assumption that the content reproduction apparatus 200 can display a content list with a viewing age restriction, and has selected a content with a viewing age restriction from the displayed content list. A content reproduction request command with a viewing age restriction is input from the content reproduction device 200 to the network interface unit 17 of the broadcast receiving device 1 via the home network 100 (step ST8). The network interface unit 17 notifies the server 18 of this content playback request, and the server 18 acquires content corresponding to the playback request from the content recorded in the content recording / playback unit 15 (step ST9).

The server 18 outputs the content acquired in step ST9 to the scrambler 16, acquires the viewing age restriction release password held by the password management unit 19, and outputs it to the scrambler 16 (step ST10). The scrambler 16 scrambles the content with the viewing age restriction using the viewing age restriction release password as a key, converts it into a description that cannot be easily deciphered, and outputs it to the server 18 (step ST11). The server 18 outputs the scrambled content to the content playback device 200 via the network interface unit 17 and the home network 100 (step ST12).

  If the content playback apparatus 200 is capable of displaying a content list with a viewing age restriction, it has a descrambler that can descramble scrambled content, and a password used for scramble is also known. Therefore, the content can be normally descrambled and viewed.

Next, a case where broadcast content is stream-distributed to the content reproduction apparatus 200 in real time will be described. FIG. 5 is a flowchart showing the operation of the broadcast receiving apparatus that provides broadcast content in real time.
A broadcast content distribution request command for requesting distribution of the content currently being broadcast is input from the content reproduction device 200 to the network interface unit 17 of the broadcast receiving device 1 via the home network 100 (step ST21). The network interface unit 17 notifies the broadcast content delivery request to the server 18, and the server 18 inquires the program information management unit 10 about the broadcast content (step ST22).

  The program information management unit 10 that has received the inquiry in step ST22 determines whether or not the content being broadcast is content with a viewing age restriction based on the stored program information, and returns the determination result to the server 18. (Step ST23). The server 18 instructs the demultiplexer 4 to output the corresponding broadcast content to the scrambler 16 (step ST24).

  Further, when the server 18 receives a determination result that the viewing age limit is applied to the broadcast content from the program information management unit 10 in step ST23, the server 18 acquires the scrambler 16 from the password management unit 19 The viewing age restriction release password is output and an instruction is given to scramble (step ST25). The scrambler 16 scrambles the viewing age restriction release password input in step ST25 as a key (step ST26), and the scrambled broadcast content is transmitted to the content playback device via the network interface unit 17 and the home network 100. 200 (step ST27).

On the other hand, when the determination result that the viewing age limit is not applied to the broadcast content is received from the program information management unit 10 in step ST23, the scramble execution instruction is not output to the scrambler 16, The broadcast content is output as it is to the content reproduction apparatus 200 via the network interface unit 17 and the home network 100 (step ST28).

As described above, according to the first embodiment, the content list including the content with the viewing age restriction is created using the XML tag that cannot be understood by the general DLNA-compliant content reproduction apparatus, and the viewing age restriction is performed. Since the content that has been applied is configured to be scrambled and delivered using a predetermined password, a content playback device that complies with a general DLNA can display a content list that is subject to viewing age restrictions and playback of content. Therefore, the viewing restriction function can be maintained effectively. On the other hand, only a content reproduction device that understands the dedicated XML tag and knows the descrambling method and password can be configured to display the content list and reproduce the content.

  In the first embodiment, a configuration is shown in which a password is used as authentication information used for content list and content scrambling. However, a fingerprint reader is additionally provided, and biometric information such as a fingerprint is used as authentication information. You may comprise.

1 is a block diagram illustrating a configuration of a broadcast receiving device according to Embodiment 1. FIG. 3 is a flowchart showing an operation of the broadcast receiving apparatus according to the first embodiment. 6 is a diagram showing an XML document example of a content list according to Embodiment 1. FIG. 6 is a diagram showing an XML document example of a content list according to Embodiment 1. FIG. 3 is a flowchart showing an operation of the broadcast receiving apparatus according to the first embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Broadcast receiving device, 2 Antenna, 3 Tuner, 4 Demultiplexer, 5 Decoder, 6 Sound processing part, 7 Speaker, 8 Graphics processing part, 9 Display part, 10 Program information management part, 11 Remote control, 12 Remote control receiving part, 13 system control unit, 14 user interface unit, 15 content recording / playback unit, 16 scrambler, 17 network interface unit, 18 server, 19 password management unit, 100 home network, 200 content playback device.

Claims (5)

In a broadcast receiving apparatus that receives broadcast content and plays back and records it,
A storage unit for recording and storing the broadcast content;
Broadcast content stored in the storage unit is distributed to an external device via a network, and a content list in which the broadcast content stored in the storage unit is classified into broadcast content with viewing restrictions and broadcast content with non-viewing restrictions is generated. A server for providing the content list to the external device via the network;
A broadcast receiving apparatus, comprising: a scrambler that scrambles the broadcast content with viewing restriction and the content list including the broadcast content with viewing restriction using a password as a key. A program information management unit for accumulating program information of broadcast content and determining whether the broadcast content being received in real time with reference to the program information is a broadcast content with viewing restriction;
The server outputs a scramble instruction for the content being broadcast based on the determination result input from the program information management unit,
2. The broadcast receiving apparatus according to claim 1, wherein a scrambler scrambles the content being broadcast using a password as a key based on the scramble instruction input from the server, and distributes the content to an external device via a network. .   The broadcast receiving apparatus according to claim 1, wherein the password is configured based on biometric information.   The broadcast receiving apparatus according to any one of claims 1 to 3, wherein the server is a digital media server (MDS: Digital Media Server) compliant with DLNA (Digital Living Network Alliance).   5. The broadcast according to claim 4, wherein the server uses an XML tag that cannot be recognized by an external device conforming to DLNA in a content list portion that violates viewing restrictions in a content list including broadcast contents with viewing restrictions. Receiver device.

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