JP2006019924A - Digital broadcasting system and digital broadcasting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital broadcasting system and a digital broadcasting method in which privacy information such as viewer position information and hobby preference information is hardly leaked in a digital broadcasting system that distributes content based on viewer position information and preference information. .
Viewer position information and data broadcasting EPG are transmitted to a UIM 110, and a content selection application 120 installed in the UIM 110 transmits content corresponding to a content selection condition 130 (position information / preference information) to the EPG. Choose from. Request information for requesting the selected content is transmitted to the digital broadcast station 300 via the mobile phone company 200, and the digital broadcast station 300 distributes the content corresponding to the request information. Since the content selection processing is performed confidentially by the UIM 110, the possibility of leakage of viewer information (for example, position information / preference information) is extremely low.
[Selection] Figure 1

Description

  The present invention relates to a technical field of a digital broadcasting system using a broadcasting satellite or the like, and more particularly to a digital broadcasting system and a digital broadcasting method that use an IC card to distribute content according to the tastes and preferences of viewers.

  Until now, TV programs etc. have been broadcast in analog format, but with recent advances in digital technology, TV programs etc. are also broadcast in digital format using broadcasting satellites or digital broadcasting towers. It came to be. In digital broadcasting in which content such as a television program is broadcast in a digital format, the content is compressed and transmitted to increase the number of channels of the program and the quality of the program.

  In addition, in digital broadcasting, data broadcasting that transmits information related to programs and information independent of the programs is also performed. In data broadcasting, a digital broadcasting receiver is connected to a digital broadcasting station using a network such as a telephone line to perform bidirectional communication between the digital broadcasting station and the viewer. Necessary information such as forecasts and news can be extracted arbitrarily.

  A digital broadcasting system has been devised that uses this data broadcasting technology to distribute content in accordance with viewer position information or hobbies.

  For example, in Patent Document 1, a viewer possesses a mobile phone equipped with a position detection means, transmits the viewer's location information from the mobile phone to a broadcaster, and the broadcaster provides program information based on the location information. Is searched from the database, and the searched program information is transmitted to the digital broadcast receiver owned by the viewer, so that the viewer can view the program related to the place where he / she is going.

Also, in Patent Document 2, a digital broadcasting station has a function of collecting hobby preference information received from viewers, determining a tendency of hobby preferences as a whole viewer, and feeding back to broadcast program information to be broadcast. A system is disclosed.
JP 2002-290354 A JP 2002-315023 A

  However, in the above-described invention, since the viewer transmits position information or hobby preference information to an information provider such as a digital broadcasting station, the information provider grasps the viewer's position information or hobby preference information and The information provider may be misused by the information provider. For example, if the viewer's location information or hobby preference information is abused, a direct mail based on the viewer's location information or hobby preference information may reach the viewer even though the viewer does not request it. is there.

  Therefore, in view of the above problems, the present invention provides a digital broadcasting system that distributes content based on privacy information such as location information and hobby preference information, and a digital broadcasting system that is difficult to leak privacy information such as location information and hobby preference information. And to provide a method.

  A first invention for solving the above-mentioned problem is a digital broadcasting system for selecting contents received by a viewer within a data carrier incorporated in a digital broadcast receiving terminal that is held by the viewer and receives digital broadcasting. The data carrier incorporated in the digital broadcast receiving terminal selects content based on content selection conditions storing conditions for selecting content from content guide information including content list information provided by digital broadcasting And a communication means for transmitting request information for requesting distribution of the content selected by the content selection means using a network and providing the digital broadcast using the digital broadcast. The content provider that performs the request based on the request information A digital broadcasting system characterized by distributing Ntsu to the digital broadcast receiving terminal.

  Further, the second invention is the digital broadcasting system according to the first invention, wherein one of the content selection conditions is a viewer's location information, and the content selection means is a content based on the location information. It is a digital broadcasting system characterized by having a function of selecting.

  Further, a third invention is the digital broadcasting system according to the second invention, wherein the digital broadcasting receiving terminal is provided with a position detecting means for detecting position information. It is.

  Further, a fourth invention is the digital broadcasting system according to any one of the first invention to the third invention, wherein one of the content selection conditions is viewer preference information, and the content selection The means is a digital broadcasting system characterized by having a function of selecting content based on the preference information stored in the data carrier.

  Furthermore, a fifth invention provides a content provider that provides content by digital broadcasting, a digital broadcast receiving terminal that is held by a viewer and that receives the digital broadcast, a data carrier incorporated in the digital broadcast receiving terminal, In a digital broadcasting method comprising a communication carrier that relays information transmitted from a digital broadcast receiving terminal and transmits it to the content provider, content guidance information including list information of content provided by the content provider through digital broadcasting A content guide information receiving step received by the digital broadcast receiving terminal, and a content selection step in which the data carrier selects content based on a content selection condition storing a condition for selecting content from the content guide information. , The digital broadcast receiving terminal A content request information transmitting step for transmitting content request information, which is information for requesting content selected by a communication carrier, a content request information transferring step for transferring the content request information to the content provider by the communication carrier, and the content And a content distribution step in which a provider distributes content corresponding to the content request information.

  Further, a sixth invention is the digital broadcasting method according to the fifth invention, wherein the content selection step includes a step in which the digital broadcast receiving terminal detects position information, and the data carrier has the content guidance information. A digital broadcasting method characterized by including a step of selecting content corresponding to the position information.

  Furthermore, a seventh invention is the digital broadcasting method according to the fifth invention, wherein the content selection step includes the viewing and listening of the data carrier stored in the data carrier from the content guide information. It is a digital broadcasting method characterized by including the step of selecting the content corresponding to a person's preference information.

  Further, the eighth invention is a data carrier characterized in that an application for selecting content based on the content selection condition from content guide information including content list information provided by digital broadcasting is mounted. It is.

  According to the present invention, the data carrier comprises content selection means for selecting content based on the content selection condition from the content guidance information received by the digital broadcast receiving terminal, so that the viewer can Content based on content selection conditions such as viewer position information and preference information can be received.

  In addition, the content selection condition (viewer position information / preference information, etc.) is selected by selecting content in the data carrier based on the content selection condition (viewer position information / preference information, etc.). There is no need to directly transmit to an information provider such as a digital broadcasting company, and the possibility that the content selection conditions (viewer's position information, preference information, etc.) are abused is extremely low.

  Here, the data carrier means a medium in which data is stored secretly in the data carrier and data can be processed. As the data carrier, an IC card in which a thin IC chip is mounted on a plastic card, IC A SIM (Sucriber Identity Module) or UIM (User Identity Module), which is a shape obtained by cutting a part of an IC card including a chip into a strip, is preferable.

  According to the present invention described so far, the process of selecting content based on the content selection conditions (viewer position information / preference information, etc.) is performed in a secret manner in the data carrier. The possibility of leakage of the viewer's privacy information (for example, location information / preference information) to the information provider is extremely low, and it is possible to provide a digital broadcasting system and a digital broadcasting method in which the viewer's privacy information is less likely to be abused. .

  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram for explaining a digital broadcasting system according to the present embodiment.

  As shown in FIG. 1, the digital broadcast system according to the present embodiment includes a mobile phone 100 as a digital broadcast receiving terminal possessed by a viewer, and a digital broadcast station 300 as a content provider that provides content by digital broadcast. , A digital broadcasting tower 310 that transmits terrestrial waves of digital broadcasting, a mobile phone company 200 as a telecommunications carrier that performs data communication with the mobile phone 100, and a GPS that transmits a signal used to detect position information ( Global Positioning System) satellite 400.

(Description of digital broadcasting)
As shown in FIG. 1, the digital broadcasting station 300 uses the digital broadcasting tower 310 to distribute contents such as programs and also performs “data broadcasting” that provides contents independent of the contents such as programs. is doing. Data broadcasting is a service that allows viewers to freely extract content requested by viewers such as weather forecasts and news at any time. In data broadcasting, two-way communication between the mobile phone 100 and the digital broadcast station 300 can be performed by connecting the mobile phone 100 possessed by the viewer and the digital broadcast station 300 via the mobile phone company 200. .

  The digital broadcasting station 300 is provided with a content database 301 storing contents to be distributed by data broadcasting. Upon receiving the request information transmitted from the mobile phone 100, the digital broadcast station 300 searches the content database 301 for content corresponding to the request information, and distributes the searched content to the mobile phone 100 via the digital broadcast tower 310.

  In addition, the digital broadcasting station 300 distributes an electronic program guide (hereinafter referred to as EPG) as content guide information including content list information provided by digital broadcasting using data broadcasting. Yes. Viewers can use EPG to view data such as a list of contents, and can also search for drama performers, content genres, etc., using data attached to the contents included in the EPG. .

  FIG. 2 is a diagram for explaining an EPG distributed by data broadcasting. As shown in FIG. 2A, in the EPG distributed by data broadcasting, the channel number 500 is provided as data for identifying the digital broadcasting station 300, and the digital broadcasting station 300 indicated by the channel number 500 is provided by data broadcasting. The content information 510 includes a plurality of pieces of content information 510.

  As shown in FIG. 2A, one piece of content information 510 includes a content number 511 for identifying the content, a region code 512 as data indicating a region related to the content, and a genre code 513 indicating the genre of the content. And are included.

  FIG. 2B is a diagram for explaining the region code 512. The region code 512 in the present embodiment is a serial number assigned to each prefecture. FIG. 2C is a diagram for explaining the genre code 513. The genre code 513 in the first embodiment is a code for identifying the type and type of content distributed by data broadcasting.

(Description of mobile phone)
The mobile phone 100 according to the present embodiment includes a position detection unit 101 that detects position information of the mobile phone 100 itself from a signal from the GPS artificial satellite 400, and a digital broadcast reception unit that receives a digital broadcast from the digital broadcast tower 310. 102 and a communication means 103 that communicates with the mobile phone company 200 using radio, and the mobile phone 100 incorporates a UIM 110 (User Identity Module) as a data carrier.

  FIG. 3 is a diagram for explaining the UIM 110. As shown in FIG. 3A, the UIM 110 has a shape obtained by cutting a part of an IC card into a strip shape. As shown in FIG. 3B, the UIM 110 is incorporated in the mobile phone 100. It is. The mobile phone 100 includes a reader / writer 104 that performs data communication with the UIM 110, and exchanges data with the UIM 110 via the reader / writer 104.

  FIG. 4 is a diagram for explaining the structure of software implemented in the UIM 110. A multi-application OS is installed in the UIM 110, and as shown in FIG. 4, a digital broadcast application 610 used in digital broadcasting is installed in addition to the mobile phone application 600 used by the mobile phone 100.

  Further, the digital broadcast application 610 includes a B-CAS application 620 that implements a B-CAS (Broadcasting Satellite Conditional Access System) function necessary for receiving digital broadcasts, and content selection as a content selection means for selecting content. An application 120 is included.

  Here, the content selection application 120 is an application that selects content based on content selection conditions 130 (viewer position information / preference information, etc.) from an EPG distributed by digital broadcast data broadcasting. In the present embodiment, as the content selection condition 130, a region code file 131 storing a code for each region and a genre code file 132 storing a viewer's favorite genre are stored in the UIM 110.

  FIG. 5 is a diagram for explaining data used by the content selection application 120, that is, the content selection condition 130. FIG. 5A is a diagram for explaining the area code file 131. In the area code file 131, geographical information that stores numerically the range of the position information of the area code is stored in association with the area code described in FIG. The content selection application 120 can acquire the region code from the location information of the mobile phone 100 using the region code file 131.

  FIG. 5B is a diagram for explaining the genre code file 132. The genre code file 132 is a file that stores a genre code corresponding to the taste preference of the viewer. The genre code file 132 is a record format type file, and each record 132a stores one genre code 132b of content requested by the viewer.

  In FIG. 5B, “10” is stored in the record number 1 of the genre code file 132, “02” is stored in the record number 2, and “03” is stored in the record number 3. According to FIG. 2C, the genre of the content that the viewer wants to browse means “travel”, “information program”, and “weather forecast”.

  The content selection application 120 receives the EPG received by the digital broadcast receiving unit 102 and the location information of the mobile phone 100 detected by the location detection unit 101. The content selection application 120 sets the region code corresponding to the location information to the region. Obtained from the code file 131 and the genre code from the genre code file 132. Then, the content information 510 corresponding to the acquired region code and genre code is selected from the EPG.

  When the content selection application 120 selects the content information 510, the content selection application 120 transmits content selection data, which is data indicating a result of selecting the content information 510, to the reader / writer 104. This content selection data includes at least a channel number that identifies the digital broadcasting station 300 and a content number that identifies the content distributed by the channel number.

  When the content selection data is transmitted from the UIM 110, the mobile phone 100 transmits request information, which is information for requesting the content specified by the content selection data, to the mobile phone company 200.

  When receiving the request information, the mobile phone company 200 transfers the request information to the digital broadcasting station 300 specified by the channel number. Upon receiving the request information, the digital broadcast station 300 searches the content database 301 for content specified by the content number, and distributes the searched content to the mobile phone 100.

(Operation of Embodiment 1)
From here, the procedure of the digital broadcast receiving method according to the embodiment shown in FIG. 1 will be described. The first step of the digital broadcasting method according to the embodiment is a step in which the mobile phone 100 receives an EPG distributed by digital broadcasting data broadcasting (step S100). Step S100 is a content guidance information receiving step.

  The next step is a step in which the position detecting means 101 provided in the mobile phone 100 measures the position information of the mobile phone 100 using the signal of the GPS artificial satellite 400 (step S110).

  Next, the reader / writer 104 provided in the mobile phone 100 selects the content selection application 120 installed in the UIM 110, and then receives the received EPG and the measured position information in the UIM 110 incorporated in the mobile phone 100. Transmit (step S120).

  Next, the content selection application 120 provided in the UIM 110 acquires a region code corresponding to the position information transmitted from the region code file 131 (step S130), and acquires a genre code from the genre code file 132 (step S140). ).

  Next, the content selection application 120 provided in the UIM 110 searches the EPG for content information 510 including data that respectively matches the region code acquired in step S130 and the genre code acquired in step S140 (step S150). Steps S110 to S150 are content selection steps.

  If the content information 510 is in the EPG, the process proceeds to step S170, and if the content information 510 is not in the EPG, the process proceeds to step S210 (step S160).

  In step S170, the content selection application 120 transmits the channel number and content number included in the content information 510 matching the two codes to the reader / writer 104, and the mobile phone 100 transmits the channel number and content transmitted from the UIM 110. The request information including the number is transmitted to the mobile phone company 200.

  In step S180, the mobile phone company 200 transfers the request information including the channel number and the content number to the digital broadcasting station 300 specified by the channel number included in the request information (step S180). Steps S170 to S180 are content request information transmission steps.

  The digital broadcast station 300 distributes content information corresponding to the transferred request information using the digital broadcast tower 310 (step S190). Then, the mobile phone 100 receives content information corresponding to the distributed request information (step S200). Steps S190 to S200 are content distribution steps.

  If the content information 510 is not in the EPG in step S160, the content selection application 120 transmits data indicating that the content corresponding to the mobile phone 100 is not in the EPG, and the mobile phone 100 notifies the viewer to that effect, and The process for receiving the broadcast is terminated (step S210).

Explanatory drawing of a digital broadcast receiving system. Explanatory drawing of the data contained in EPG. Explanatory drawing of UIM. Explanatory drawing of the software structure of UIM. Explanatory drawing of the data memorize | stored in UIM. The flowchart which showed the procedure of the digital broadcast reception method.

Explanation of symbols

100 mobile phone 101 position detection means 110 UIM
120 Content Selection Application 130 Content Selection Condition 131 Regional Code File 132 Genre Code File 200 Mobile Phone Company 300 Digital Broadcasting Station 400 GPS Artificial Satellite

Claims (8)

  A digital broadcasting system for selecting content received by a viewer within a data carrier incorporated in a digital broadcast receiving terminal that is held by a viewer and receives a digital broadcast, wherein the data carrier incorporated in the digital broadcast receiving terminal is And content selection means for selecting content based on content selection conditions storing conditions for selecting content from content guide information including content list information provided by digital broadcasting, wherein the digital broadcast receiving terminal And a communication means for transmitting request information for requesting distribution of the content selected by the content selection means using a network, and a content provider that provides the digital information by using the digital broadcast provides the content based on the request information. Distributed to the digital broadcast receiving terminal Digital broadcasting system characterized by.   2. The digital broadcasting system according to claim 1, wherein one of the content selection conditions is viewer location information, and the content selection means has a function of selecting content based on the location information. A featured digital broadcasting system.   3. The digital broadcast system according to claim 2, wherein the digital broadcast receiving terminal is provided with position detection means for detecting position information.   4. The digital broadcasting system according to claim 1, wherein one of the content selection conditions is viewer preference information, and the content selection means is stored in the data carrier. A digital broadcasting system having a function of selecting content based on the preference information.   A content provider that provides content by digital broadcasting, a digital broadcast receiving terminal that is held by a viewer and that receives the digital broadcast, a data carrier that is incorporated in the digital broadcast receiving terminal, and transmitted from the digital broadcast receiving terminal A content guide information receiving step for receiving content guide information including list information of contents provided by the content provider through digital broadcasting in a digital broadcasting method comprising a communication carrier that relays information and transmits it to the content provider A content selection step in which the data carrier selects a content based on a content selection condition storing a condition for selecting the content from the content guide information; and the content selected by the digital broadcast receiving terminal by the telecommunications carrier With information to request A content request information transmitting step for transmitting content request information, a content request information transferring step for transferring the content request information to the content provider by the communication carrier, and a content corresponding to the content request information by the content provider. A digital broadcasting method characterized by including a content distribution step for distribution.   6. The digital broadcasting method according to claim 5, wherein the content selection step includes a step in which the digital broadcast receiving terminal detects location information, and the data carrier corresponds to the location information from the content guide information. A digital broadcasting method comprising a step of selecting content to be recorded.   6. The digital broadcasting method according to claim 5, wherein in the content selection step, the data carrier selects content corresponding to viewer preference information stored in the data carrier from the content guide information. A digital broadcasting method comprising the step of selecting. A data carrier comprising an application for selecting content based on the content selection condition from content guide information including content list information provided by digital broadcasting.

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