JP4546876B2 - Broadcast station apparatus and viewer terminal - Google Patents

Description

  The present invention relates to a broadcasting station apparatus and a viewer terminal of a program organization system for organizing a program, and more particularly to a broadcast communication technique including organization of a program to be broadcast (distributed).

  Note that broadcasting includes what broadcasts so-called content and programs in addition to television and radio. The viewer terminal only needs to be able to receive and output content (programs), and includes information processing devices such as mobile phones, PCs, and home network servers in addition to television and radio.

  The digitalization of broadcasting and the broadbandization of communication networks are being pushed at the same time, and the two fields of broadcasting and communication that have been growing separately are being merged technically and businessally. As a new form of service when broadcasting and communications are integrated, we are aiming to realize “a service that collects viewer information using a network and broadcasts programs according to viewer preferences based on the collected information”. The business is starting up.

  In order to provide such a service, it is necessary to construct a system having functions for collecting and analyzing viewer information and organizing and broadcasting programs.

Patent Documents 1 and 2 are methods for collecting viewer information and organizing programs according to the collected viewer information.
JP 2001-346120 A JP 2002-084438 A

  However, in Patent Documents 1 and 2, it has been impossible to perform program organization according to the broadcasting infrastructure while responding to the viewer's preference.

  The technique described in Patent Document 1 describes a method for creating a personal program organization table according to the viewer's preference. However, the program table that is easy to view by editing a program table issued by a broadcasting station. However, it does not describe a mechanism for organizing a program that reflects the viewer information of each viewer. For this reason, it cannot be performed by broadcasting according to the viewer's preference, and it is not even suggested to consider broadcasting infrastructure.

  The technique described in Patent Document 2 describes a program organization method that matches the information of the viewer. However, the program organization is also effective, that is, it does not touch on the point of considering the broadcast infrastructure. . For this reason, in an extreme case, when each viewer desires a different program, the program corresponding to the number of viewers must be broadcast in the same time zone. However, as a practical problem, the number of programs that can be broadcast in the same time period is limited, and unless this is taken into consideration, program organization (broadcasting) according to viewers' preferences is impossible.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a broadcasting system and a viewer terminal in a program organization system that can perform program organization according to the viewer's preference while reducing the load on the broadcast system.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  The present invention specifies content (programs) that can be broadcast to a broadcast terminal (or can be received by the broadcast terminal) in the same time period based on a numerical value indicating the capability of the broadcast infrastructure, and responds to the viewer from among the content (program) Select content. That is, the content to be broadcast in multiple stages is specified. Here, the specification of the content includes specifying the content by specifying the number of programs that can be broadcast from the content held in advance on the broadcast station side. The specification of the number of programs includes specifying the maximum number of programs that can be broadcast.

  A broadcasting method using a broadcasting station apparatus according to the present invention is a broadcasting method using a broadcasting station apparatus that broadcasts content to a plurality of viewer terminals, and uses a viewer terminal from a plurality of viewer terminals. Viewer information comprising personal information of the viewer and program viewing history information, and the same time based on the amount of network transmission between the broadcast station device and the viewer terminal and the bit rate of the content received by the viewer terminal Calculate the number of programs that can be broadcast in the band, select content that is a candidate for organization from the content held by the broadcast station device based on the viewer information of the entire viewer collected from a plurality of viewer terminals, Create a plurality of program organization tables with the number of programs as the organization number, and broadcast to multiple viewer terminals from the program organization table to each viewer based on the viewer information of each viewer terminal. Should contain Select tool, and transmits the respective viewer terminal.

  A broadcast station apparatus according to the present invention is a broadcast station apparatus that broadcasts content to a plurality of viewer terminals, a viewer management unit that registers viewers using the plurality of viewer terminals, and a plurality of viewer stations. Viewer information receiver that collects viewer information consisting of viewer personal information and program viewing history information from the viewer terminal, and viewer information collected for the viewer in response to a request from the viewer terminal A viewer information disclosure unit to be broadcasted, a content management unit to manage broadcast content and attribute information of the content, a program organization table describing the content to be broadcast, and an individual program organization table to be transmitted to each viewer terminal A program organizing unit, and a content sending unit that broadcasts content based on the program organizing table, and the program organizing unit transmits a network transmission amount between the broadcasting station device and the viewer terminal And the number of programs that can be broadcast during the same time period based on the bit rate of the program received at the viewer terminal, and based on the viewer information of the entire viewer and content attribute information collected from a plurality of viewer terminals Then, a content that is a candidate for composition is selected from the contents held by the broadcasting station device, and a plurality of program composition tables having the number of programs as the composition number are created. Based on the viewer information of the terminal, the content to be broadcast to each viewer is selected from the program organization table and transmitted to each viewer terminal.

  A viewer terminal according to the present invention is a viewer terminal for outputting content broadcast from a broadcasting station device, and a viewer information registration unit for registering viewer information including its own personal information and program viewing history information. And a viewer information transmitting unit that transmits the registered viewer information to the broadcast station device, and a request for viewing the registered viewer information of the broadcast station device, and a view sent from the broadcast station device. The viewer information browsing unit that restores and browses viewer information from its own viewer information and the number of programs that can be broadcast in the same time zone from the broadcast station device after the viewer information is transmitted to the broadcast station device The individual program organization table selected based on the viewer information is received from the plurality of program organization tables created as numbers, and the content broadcast from the broadcasting station device is received based on the received individual program organization table. Viewing programs to be output It is those with a door.

  In the present invention, a broadcasting station periodically collects personal information such as viewing information of viewers and favorite genres, and performs program organization based on the personal information. That is, when a program to be broadcast is determined when a program to be broadcast is determined, a certain number of programs that are broadcast candidates are specified from the viewing history of the entire viewer. Then, the number of programs that can be broadcast in the same time zone is specified from the specified programs, and the programs for each individual are specified from here according to personal preferences such as personal viewing history.

  Specifically, an operator (hereinafter referred to as a broadcasting station) that collects personal information and uses it for providing services with the viewer performs the following.

  The broadcast station creates a viewer ID and public key pair for each viewer, registers them in its viewer information database, and issues them to the viewers. Then, personal information and viewing information registered in the viewer's own terminal are periodically collected. At the time of collection, data falsification prevention by electronic signature and leakage prevention processing by encryption are performed. The collected viewer information is encrypted and then registered in the database of the broadcasting station.

  In addition, the broadcasting station calculates the viewing tendency of the entire viewer from the entire collected viewer information, and selects a program based on the calculated viewing tendency. Furthermore, the viewing tendency of each viewer is compared with the selected program, and an individual program organization table for each viewer is created. Thus, by organizing the program in two stages, it is possible to perform the program according to the viewer's preference while reducing the load on the broadcasting station. A program table that has been organized by region-by-region so far will be created with a unit according to viewer information such as hobbies and preferences.

  The viewer provides his / her personal information to the broadcasting station that may be disclosed. When providing, digital signature and encryption are applied and transmitted. Also, program viewing is performed based on the individual program guide received from the broadcasting station.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  According to the present invention, the broadcast station apparatus creates a program guide according to the viewer's hobbies and preferences from the collected viewer information, and at that time, the load of the broadcast station apparatus is increased by organizing the program in multiple stages. This makes it possible to organize according to the taste of the viewer.

  Further, according to the present invention, for communication from the viewer terminal to the broadcast station apparatus, it is possible to perform safe communication of the viewer's personal information and viewing information and data protection management.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

  In the following description, unless otherwise specified, “viewing” means that the broadcast terminal outputs the received content. The output includes display, audio output, and recording to a storage medium (such as recording or recording).

<Configuration of program organization system>
The configuration of a program organization system according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the overall configuration of a program organization system according to an embodiment of the present invention, FIG. 2 is a block diagram showing the internal configuration of a broadcast station apparatus of the program organization system according to an embodiment of the present invention, FIG. 3 is a block diagram showing the internal configuration of the viewer terminal of the program organization system according to the embodiment of the present invention.

  In FIG. 1, a program organization system collects personal information and uses it for program organization, broadcast station apparatus 101 that broadcasts the program, and provides personal information for using the service and viewing the program. User terminals 102-104. There are as many viewer terminals as there are users who use the service. The broadcast station apparatus 101 and the viewer terminals 102 to 104 are connected via the network 105 and the relay server 110.

  The relay server 110 is provided to limit the number of viewers who view the broadcast and connect viewer terminals to reduce the burden on the broadcast station device 101. The content transmitted from the broadcast station device 101 is: First, after being sent to a plurality of relay servers 110, it is sent from the relay server 110 to the viewer terminals 102 to 104 connected to the relay server 110.

  Depending on the total number of viewer terminals 102 to 104, content may be transmitted from the broadcast station apparatus 101 to each of the viewer terminals 102 to 104 without going through the relay server 110.

  As shown in FIG. 2, the internal configuration of the broadcast station apparatus 101 includes a storage device 202, a communication device 204 for communicating with other devices via a network, an input device 205 such as a keyboard and a mouse, and a display. And the like, a CPU 201, and an interface 203 for connecting them.

  The storage device 202 registers a viewer, creates a public key pair for the viewer as needed, and issues a broadcast station public key, and a viewer management program 207 for viewing from the viewer. Viewer information receiving program 208 for receiving viewer information, viewer information disclosure program 209 for allowing viewers to view viewer information transmitted by the viewer, and content for encrypting content and registering attribute information A management program 210; a program organization program 211 for performing broadcast program organization and individual program organization for each viewer; a content transmission program 212 for transmitting encrypted content to the network based on the program organization; The viewer information database 213 in which the viewer information received from the viewer is registered, and the content title and other attributes. A content attribute information database 214 in which information is registered, a broadcast station common key 215 used inside the broadcast station, a broadcast station private key 216 and a public key 217 used for signature creation and encryption / decryption, and content A content key 218 for encryption, an encrypted content file 219 encrypted with the content key 218, and a program organization information file 220 describing the organization of the program are stored.

  The processing of each program 207 to 212 in the following description is realized on the broadcast station apparatus 101 when the CPU 201 executes each program called through the interface 203. Each of the programs 207 to 212 may be stored in the storage device 202 in advance, or may be introduced via a medium that can be used by the broadcast station device 101. The medium includes, for example, a communication medium such as a storage medium that can be attached to and detached from the broadcasting station apparatus 101, a network connected to the communication apparatus 204, or a carrier wave that propagates through the network.

  As shown in FIG. 3, the internal configuration of the viewer terminals 102 to 104 includes a storage device 302, a communication device 304 for communicating with other devices via a network, an input device 305 such as a keyboard and a mouse, , A display device 306 such as a display, a CPU 301, and an interface 303 for connecting them.

  In the storage device 302, the viewer information registration program 307 for registering the viewer information of the viewer himself / herself in the database of the viewer terminal, and the viewer information transmission request from the broadcast station, A viewer information transmission program 308 that transmits a signature to the requesting broadcast station and a viewer information browsing program 309 that requests and browses the viewer's own viewer information registered in the broadcast station. The program viewing program 310 for receiving the individual program organization information from the broadcast station and viewing the program based on the individual program organization information, the viewer profile database 311 in which the viewer information is registered, Viewing information database 312 in which history is recorded, viewer common key 313 used inside the viewer terminal, creation of signature and encryption / decryption A viewer's private key 314, public key 315, content key 316 for decrypting the content, and a disclosure policy file 317 that records a disclosure policy such as who to disclose each item of the viewer information; The individual program organization information file 318 describing the program organization to be viewed is stored.

  The processing of each program 307 to 310 in the following description is realized on the viewer terminals 102 to 104. The execution and storage method of each program is the same as that of the broadcast station apparatus 101 described above.

  The keys of the broadcasting station device and the viewer side device and information in the database may be stored in a tamper-resistant storage medium such as an IC card.

<Outline of data flow of programming system>
Next, the outline of the data flow of the program organization system according to the embodiment of the present invention will be described. FIG. 4 is an explanatory diagram for explaining the outline of the data flow of the program organization system according to the embodiment of the present invention.

  As shown in FIG. 4, an outline of a data flow exchanged between a broadcasting station apparatus 101 that provides a program organization / broadcasting service using viewer information and viewer terminals 102 to 104 that use the service is shown. First, the broadcast station apparatus 101 requests the viewer terminals 102 to 104 to send viewer information, and acquires the viewer information file 401 (S100) (viewer registration process). At that time, the viewer terminals 102 to 104 generate and edit the viewer information to be disclosed, and transmit the viewer information file 401 (viewer information registration processing, viewer information transmission processing).

  The viewer information file 401 includes a viewer's electronic signature (hereinafter referred to as a viewer signature) created by performing disclosure control processing on the viewer information to be transmitted.

  The broadcast station apparatus 101 receives the viewer information file 401 from the viewer terminals 102 to 104, and stores the viewer information and the viewer signature included therein in the viewer information database 213 (viewer reception processing).

  The viewer terminals 102 to 104 can browse their registered viewer information by issuing a browsing request to the broadcast station apparatus 101. At that time, the broadcast station apparatus 101 transmits viewing viewer information in which each item of the viewer information is concealed to the viewer (viewer information disclosure process). The viewing viewer information includes a viewer signature stored in the viewer information database 213 when the viewer information is received, and an electronic signature of the broadcasting station created for the viewing viewer information transmitted to the viewer. It is.

  The viewer terminals 102 to 104 receive the viewer information for viewing from the broadcast station device 101, and after verifying the viewer signature and the broadcast station signature included in the viewer information for browse, the viewer terminals 102 to 104 correspond to the viewer information for viewing. Viewer information is called from its own viewer profile database 311 and displayed (viewer information browsing process).

  Also, the broadcast station apparatus 101 creates a plurality of patterns of program organization based on the viewer information collected from the viewer, and creates program organization information describing them (content registration process). Also, from among the program information, an optimum program is determined for each viewer based on the viewer information of each viewer, and an individual program program information file 318 is created and transmitted. (Program organization process) (S101).

  The broadcast station apparatus 101 sends the encrypted content file 219 to the network as it is organized based on the program organization information (program broadcast processing) (S102). Based on the received individual program organization information file 318, the viewer terminals 102 to 104 acquire the encrypted content file 219 as organized from the content flowing on the network (S103), decrypt it, and view it. (Program viewing process).

<Viewer registration process>
Next, the viewer registration process in the broadcast station apparatus of the program organization system according to one embodiment of the present invention will be described with reference to FIG. FIG. 5 is a process flow of the viewer registration process in the broadcast station apparatus of the program organization system according to the embodiment of the present invention.

  The broadcast station apparatus 101 first performs the viewer registration process of S501 to S504 below by the viewer management program 207. The broadcast station common key 215, the broadcast station secret key 216, the broadcast station public key 217, and the content key 218 are created in advance.

  In S501, a viewer ID already registered is searched from the viewer information database 213, and the maximum value of the viewer ID is acquired. Then, a new viewer ID is created by adding 1 to the maximum value of the acquired viewer ID. The viewer ID is an identification ID assigned to each viewer by the broadcast station for viewer identification.

  In S502, a viewer private key and a viewer public key for the viewer with the viewer ID created in S501 are created using a public key cryptosystem. Here, in the broadcasting station apparatus, a pair of the private key and public key for the viewer is created. However, these keys may be created on the viewer side, and only the public key may be registered in the broadcasting station later. .

  In S503, the viewer ID created in S501 and the viewer public key created in S502 are registered in the viewer information database 213. Here, the viewer's private key is not registered in the viewer information database 213. This is because the viewer's private key is not used by the broadcasting station and need not be kept. Moreover, it is because the risk of leakage will increase if it is left.

  In S504, the viewer ID created in S501, the viewer private key created in S502, the viewer public key, the broadcast station public key 217 and the content key 218 stored in the broadcast station apparatus 101 are delivered to the viewer. As a delivery method, there are a method in which these data are written in a recording medium such as an IC card, and the IC card is mailed to a viewer or issued at a reception desk, or a method of sending data via a network.

<Viewer information registration process>
Next, the viewer information registration process in the viewer terminal of the program organization system according to one embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a processing flow of the viewer information registration process in the viewer terminal of the program organization system according to the embodiment of the present invention, and FIG. 7 is the viewer information registration time of the program organization system according to the embodiment of the present invention. It is a figure which shows an example of a registration screen.

  The viewer terminals 102 to 104 perform the viewer information registration process of the following S601 to S602 by the viewer information registration program 307. The viewer information registered here is sent to the broadcasting station and used for program organization. Note that the viewer common key 313 is created in advance, and the viewer secret key 314, the viewer public key 315, and the content key 316 are recorded from the broadcasting station.

  In step S601, the viewer profile database 311 is checked to see if a viewer profile has already been registered, and a viewer profile is created and updated. In S601, if registered, the registration information is displayed in a state described in the viewer profile input field 603 of the registration screen as shown in FIG. In S601, if not registered, only the viewer ID on the registration screen as shown in FIG. 7 is described, and the other items are displayed in a blank state.

  Further, if a disclosure policy file already exists for the disclosure policy file 317, the content of the disclosure policy file is displayed in a state of being reflected in the disclosure policy input field 604 of the registration screen as shown in FIG. If it does not exist, it is displayed in the disclosure policy input field 604 of the registration screen as shown in FIG. The viewer inputs (or changes) the value of each item of the viewer profile and the disclosure policy.

  In S 602, the viewer profile input in the viewer profile input field 603 in S 601 is registered in the viewer profile database 311. Here, it is desirable to register the registration data by encrypting with the viewer common key 313. Also, a disclosure policy file 317 that records the disclosure policy input in the disclosure policy input field 604 is created.

<Viewer information transmission process>
Next, viewer information transmission processing in the viewer terminal of the program organization system according to one embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a processing flow of viewer information transmission processing in the viewer terminal of the program organization system according to the embodiment of the present invention, and FIG. 9 is a viewer information file of the program organization system according to the embodiment of the present invention. It is a figure which shows an example.

  The viewer terminals 102 to 104 perform the following viewer information transmission processing of S701 to S705 by the viewer information transmission program 308. Thereby, the viewer information of the viewer is sent to the broadcasting station.

  In S701, the viewer ID and the viewer profile registered in S602 are acquired from the viewer profile database 311. If the viewer profile is encrypted, it is decrypted using the viewer common key.

  In S <b> 702, viewing information such as a viewer's viewing history is acquired from the viewing information database 312. If the viewing information is encrypted, it is decrypted using the viewer common key. Here, the viewing information database 312 stores information such as viewer viewing time, viewing channel, viewing program recorded together with program viewing. For the broadcast station apparatus 101, information on how long the viewer has watched each channel, genre, and main performer, or how much of the total viewing time is occupied is transmitted. This information is hereinafter referred to as viewing information.

  In S703, random numbers (r1 to r10) are generated for each item acquired in S701 and S702. The random number created here is recorded in the viewer profile database 311. Next, a hash value is calculated for the sum of the value of each item and the random number created for each item.

  However, in the disclosure policy file 317, “non-disclosure” is set as an item value for an item set as “not disclosed”. For example, for the item “zip code”, a hash function “3A1B28539C210DDE...” Is generated by applying a hash function to data obtained by adding the value “123-4567” and the random number “r1”. By using the random number “r1” to create the hash value “3A1B28539C210DDE...”, It is possible to prevent the original value “123-4567” from being leaked from the hash value due to a guess attack. When a random number is not used, for example, a mail that fits the hash value “3A1B28539C210DDE... I can find the number. For non-disclosure items, a hash value is calculated for the value “non-disclosure” plus a random number.

  In S704, the viewer signature 706 is created by public key cryptography using the viewer's private key for the sum of all the hash values of each item created in S703.

  In S705, the viewer ID as shown in FIG. 9 including the viewer ID, each item name and value acquired in S701 to S703, viewing information, a random number of each created item, and the viewer signature 706 created in S704. An information file 401 is created and transmitted to the broadcast station apparatus 101.

  At the time of transmission, the viewer information file 401 is encrypted and transmitted by a common key encryption method or the like. The common key used for encryption is encrypted using the public key of the broadcasting station and transmitted together with the encrypted viewer information file.

  Note that the viewer information file 401 may be encrypted using the public key of the broadcasting station.

<Viewer information reception processing>
Next, viewer information reception processing in the broadcast station apparatus of the program organization system according to one embodiment of the present invention will be described with reference to FIG. FIG. 10 is a processing flow of the viewer information receiving process in the broadcasting station apparatus of the program organization system according to the embodiment of the present invention.

  When the broadcast station apparatus 101 receives the viewer information file 401 from the viewer terminals 102 to 104, the viewer information receiving program 208 performs the following viewer information reception processing of S 801 to S 804. Thereby, the viewer information of each viewer is registered in the viewer information database 213 of the broadcasting station.

  In S801, the viewer information file 401 is received from the viewer terminals 102-104. Since the viewer information file is encrypted by the common key encryption method, the common key encrypted with the broadcast station public key is restored using the broadcast station private key 216, and the restored common key is used. The viewer information file 401 is decrypted.

  In S802, for each item included in the viewer information file 401, a hash value is calculated for the sum of “value” and “random number”. For example, for the item “zip code” of the item ID “1”, a hash function “3A1B28539C210DDE...” Is applied to the data obtained by adding the value “123-4567” and the random number “r1”. Is generated. Next, the consistency between the viewer signature 706 included in the viewer information file 401 and the hash value of each of the created items is added by public key cryptography using the viewer's public key. Verifies the viewer signature 706. The public key of the viewer used here is recorded in the viewer information database 213 of the broadcast station apparatus 101 at the time of viewer registration. The public key of the viewer may be sent from the viewer terminals 102 to 104 to the broadcast station apparatus 101 together with the viewer information file 401.

  In S803, for the viewer information file 401 verified in S802, the value of each item, the random number for the item, and the viewer signature 706 are encrypted using the broadcast station common key 215. Although this step of S803 may be omitted, by encrypting and registering in the database, information leakage from the database can be prevented and safety can be improved.

  In S804, the value of each item encrypted in S803, the random number for that item, and the viewer signature 706 are registered in the viewer information database 213.

<Viewer information disclosure process>
Next, viewer information disclosure processing in the broadcast station apparatus of the program organization system according to one embodiment of the present invention will be described with reference to FIGS. FIG. 11 is a processing flow of viewer information disclosure processing in the broadcast station apparatus of the program organization system according to the embodiment of the present invention. Here, the viewer terminal 102 having the viewer ID “1” is broadcast station A processing procedure when a browsing request for registered viewer information is issued to the apparatus 101 is shown. FIG. 12 is a diagram showing an example of a viewer information file for browsing of the program organization system according to the embodiment of the present invention.

  When receiving a browsing request from the viewer terminal 102, the broadcast station apparatus 101 performs the following viewer information disclosure process of S901 to S904 by the viewer information disclosure program 209.

  In S901, the viewer information database 213 is searched with the viewer ID “1” as input, and the viewer information of the viewer ID “1” is acquired from the record corresponding to the viewer ID “1”.

  In S902, for each item of the viewer information acquired in S901, a hash value is calculated for the sum of “value” and “random number”. For example, for the item with the item ID “1”, a hash function “3A1B28539C210DDE...” Is generated by applying a hash function to data obtained by adding the value “123-4567” and the random number “r1”.

  In S903, a broadcasting station signature 906 is created by public key cryptography using the broadcasting station private key 216 with respect to the sum of all the hash values of each item created in S902.

  In S904, the viewer ID “1”, the item name for each item, the hash value generated in S902, the viewer signature 706 included in the viewer information acquired in S901, and the broadcasting station signature 906 created in S903 A viewer information file 905 for browsing as shown in FIG. 12 is created and transmitted to the viewer terminal 102. At the time of transmission, it is desirable that the viewer information file 905 for browsing is encrypted and transmitted by a common key encryption method or the like.

  In the browsing viewer information file 905, the value of each item is not described, and only the hash value of each item is described. For this reason, even if the viewer information file 905 for browsing is wiretapped by a terminal other than the viewer terminal 102, the value of each item, that is, leakage of personal information of the viewer terminal 102 can be prevented.

<Viewer information browsing process>
Next, the viewer information browsing process in the viewer terminal of the program organization system according to the embodiment of the present invention will be described with reference to FIG. FIG. 13 is a processing flow of viewer information browsing processing in the viewer terminal of the program organization system according to the embodiment of the present invention. Here, the viewer terminal 102 having the viewer ID “1” is broadcast station The processing procedure when the viewer information file 905 for browsing is received from the apparatus 101 is shown.

  When the viewer terminal 102 receives the viewer information file 905 for browsing from the broadcast station apparatus 101, the viewer information browsing program 309 performs viewer information browsing processing of S1001 to S1003 below.

  In S1001, the broadcasting station signature 906 included in the viewing viewer information file 905 received from the broadcasting station device 101 and the viewing viewer information file 905 are received by the public key encryption method using the public key of the broadcasting station. The broadcast station signature 906 is verified by checking the consistency with the sum of all hash values of each item. The public key of the broadcasting station used here is issued by the broadcasting station at the time of viewer registration. The broadcasting station public key may be sent from the broadcasting station apparatus 101 to the viewer terminal 102 together with the browsing viewer information file 905 when the browsing viewer information is transmitted. With this broadcast station signature 906, the viewer can verify that the received viewer information file 905 for viewing has been sent from a legitimate broadcast station.

  In S1002, the viewer signature 706 included in the viewer information file 905 for browsing and the hash value of each item included in the viewer information file 905 for browsing are obtained by public key cryptography using the viewer public key 315. The viewer signature 706 is verified by checking the consistency with the sum of all. Thereby, the viewer can verify that the viewer information file 401 transmitted by himself / herself has not been falsified.

  In S1003, for each item in the viewing viewer information file 905, the value of each item is acquired from the viewer profile database 311 and the viewer ID, item name, and item value are displayed. Only the hash value of each item is described in the viewer information file 905 for browsing. However, by using the information recorded in the viewer profile database 311, the viewer who owns the viewer information is not used. The value of each item can be displayed.

  Note that the viewer profile database 311 can further enhance the safety of viewer information by preventing unauthorized access through access control or by storing it in a tamper-resistant storage area or storage medium. .

<Content registration process>
Next, content registration processing in the broadcast station apparatus of the program organization system according to an embodiment of the present invention will be described with reference to FIG. FIG. 14 is a processing flow of content registration processing in the broadcast station apparatus of the program organization system according to the embodiment of the present invention.

  The broadcast station apparatus 101 performs the following content registration processing of S1101 to S1103 by the content management program 210. Thereby, the encrypted content for broadcasting can be created.

  In S1101, the attribute information of the content to be registered is registered in the content attribute information database 214. Here, the attribute information is information about the content such as the title, genre, performer, and time (length) of the content. When registering, a content ID already registered is searched from the content attribute information database 214, and the maximum value of the content ID is acquired. Then, by adding +1 to the maximum value of the acquired content ID, a new content ID is created and registered together with the attribute information. The content ID is an identification ID assigned to each content in order to identify the content.

  In S1102, the content to be registered is encrypted by the common key encryption method using the content key 316 to create an encrypted content file 219.

  In S1103, the encrypted content file 219 created in S1102 is stored. The encrypted content file 219 is sent to the network when the program is broadcast.

<Program organization process>
Next, with reference to FIGS. 15 to 17, the program organization process in the broadcast station apparatus of the program organization system according to the embodiment of the present invention will be described. FIGS. 15 to 17 are process flow of the program organization process in the broadcasting station apparatus of the program organization system according to the embodiment of the present invention, FIG. 15 shows the entire process flow of the program organization process, and FIG. FIG. 17 shows a detailed flow of the individual program organization information creation process of the program organization process.

  First, the broadcast station apparatus 101 performs the following program organization process of S1201 to S1205 by the program organization program 211 as shown in FIG. Thus, a program organization information file 220 for determining broadcast contents and an individual program organization information file 318 for determining contents to be viewed by each viewer are created.

  In S1201, the viewer's viewing information for the day of the week and time zone to be organized is acquired and analyzed. Specifically, the viewer information stored in the viewer information database 213 and viewer information such as hobbies are acquired, and information on popular genres, channels, performers, etc. is aggregated from them. . In the aggregation, the target viewer information and viewing information may be matched to the day of the week / time zone to be organized, or all information may be targeted regardless of the day of the week / time zone.

  In addition, each viewer side may aggregate own viewer information and viewing information, and may transmit to the broadcasting station apparatus.

  In S1202, the content that is the organization candidate for the day / time is selected from the viewing information of all viewers tabulated in S1201 and the content attribute information stored in the content attribute information database 214, and the program organization information file 220 is selected. Is stored in the broadcast station apparatus 101. The program organization information file 220 is a program table for a broadcasting station, and the broadcasting station transmits contents based on the program organization information file 220.

  Details of the program organization information creation processing in S1202 shown in FIG. 15 will be described with reference to FIG. FIG. 16 shows an example in which a program is organized from 6:00 am to 12:00 on February 14, 2005 (Monday).

  In S12021, the number of contents that can be distributed simultaneously is calculated. For example, in the case of network distribution, it is obtained by dividing the maximum transmission amount of the network from the broadcasting station to the user terminal by the bit rate of the content to be distributed. If the content bit rate differs for each content, the total value of the content bit rates selected in S12023 is set to be smaller than the maximum transmission amount of the network.

  By the processing of S12021, first, the number of contents that can be simultaneously distributed from the broadcasting station apparatus 101 is determined, and program organization is performed within the number of contents that can be simultaneously distributed, so that program organization that cannot be simultaneously distributed is performed in the program organization. It will never happen.

  In S12022, the number of contents to be simultaneously distributed is determined according to the time zone to be organized. For example, in a time zone where there are many viewers such as Saturday night, the number of contents approximately the same as the maximum number of content obtained in S12021 is distributed. Since there is no need to distribute content, the cost of content distribution is reduced with a small number of content distributions. However, in any case, the maximum number of contents obtained in S12021 is not exceeded.

  In S12023, a plurality of contents that match the viewing tendency of the viewer's viewing information aggregated in S1201 are selected from the values of the genre, performer, and program length items in the content attribute information database 214. Here, the viewing tendency is viewing information derived from viewing information of all viewers, such as which genres of programs are often watched and which performers are often watching. Represents a trend. For example, when the number of content distributions on Monday morning determined in S12022 is “4”, based on attribute information of a plurality of selected contents, it is about 6:00 am to 12:00 on Monday, February 14, 2005. Four organization patterns (organization 1 to organization 4) are created, and a program organization information file 220 as shown in FIG. 16 is created.

  For example, in the example shown in FIG. 16, as the program organization information file 220, a common program is organized by organization 1 to organization 4 for programs at 6 o'clock, and programs after 7 o'clock are organized at organization 1 to organization 4. The programs are organized according to the viewing tendency of the viewer's viewing information.

  In addition, this organization may be configured so that the same program is organized in each organization, even if the time zone of the program for each organization is different in all the times of the day, Depending on the viewing tendency such as the genre for each organization, programs that are not broadcast in other organizations may be organized.

  Further, in S1203 shown in FIG. 15, the content attribute information stored in the content attribute information database 214 and the viewing information of each viewer are used for each viewer from the program organization information file 220 created in S1202. An optimum organization pattern is selected and an individual program organization information file 318 is created. The individual program organization information file 318 is a program guide for each viewer, and each viewer views a broadcast based on the individual program organization information file 318.

  Details of the individual program organization information creation processing in S1203 shown in FIG. 15 will be described with reference to FIG. FIG. 17 shows an example in which an individual program organization information file 318 for the viewer 1 is created from the program organization information file 220 created by the program organization information creation process shown in FIG.

  In S1203, an optimum program for the viewer 1 is selected from the four organization patterns of the program organization information file 220, and an individual program organization information file 318 describing the organization is created. Specifically, the viewing time / viewing ratio is calculated from the viewing information of the viewer 1 registered in the viewer information database 213 for the genre, performer, etc. of the program organized in each organization pattern. Find which organization pattern has the most viewing time and viewing ratio.

  Here, looking at the program starting from 9:00 of organization 1 of the program organization information file 220, program B with content ID: 002 is organized. On the other hand, in the case of organization 2, program A with content ID: 001 is organized. In the content attribute information database 214 shown in FIG. 16, the genre of program A is drama and the genre of program B is sports. Therefore, for example, when the viewer 1 likes a drama, there is a high possibility that the organization 2 becomes the individual program organization information file 318 of the viewer 1. However, since there are other knitting patterns, channels, performers, and the like, knitting 2 is not always assigned.

  Further, in S1204 shown in FIG. 15, a broadcasting station signature is created by the public key cryptosystem using the broadcasting station private key 216 for the individual program organization information file 318 created in S1203. By giving a signature, it is possible to prove that the individual program organization information file 318 is a legitimate one created by the broadcasting station.

  In S1205, the individual program organization information file 318 created in S1203 and the broadcasting station signature created in S1204 are transmitted to the viewer terminals 102 to 104, respectively. The individual program organization information file 318 of the viewer 1 is sent to the viewer terminal of the viewer 1, and the individual program organization information file 318 of the viewer 2 is sent to the viewer terminal of the viewer 2. At the time of transmission, it is desirable to encrypt and transmit the individual program organization information file 318 by a common key encryption method or the like.

  In this way, a plurality of contents are selected from the viewing information of the entire viewer, and an organization pattern is created in the number of contents that can be distributed simultaneously determined from the maximum transmission amount of the network and the bit rate of the contents to be distributed While maintaining the load of the broadcasting station below a certain level by performing a two-stage organization from among these organization patterns, further determining the optimum organization pattern for each viewer based on the viewing information of each viewer. The program organization corresponding to each viewer can be created.

  In the first stage organization, the number of contents to be organized is reduced to some extent from the enormous number of contents. In the second stage organization, the reduced number of contents and each viewer's This is because it is only necessary to determine the organization pattern of each viewer by comparing with the viewing information.

  Here, the individual program organization information file 318 for each viewer is created in S1203 shown in FIG. 15 in the broadcast station apparatus 101, but this may be performed by the viewer terminals 102 to 104.

  For example, the broadcast station apparatus 101 transmits the program organization information file 220 created in S1202 shown in FIG. 15 to the viewer terminals 102 to 104. In the program organization information file 220, a plurality of patterns of program organization selected from the viewing tendency of the entire viewer are described.

  The viewer terminals 102 to 104 that have acquired the program organization information file 220 select an optimum program for the viewer from a plurality of organization patterns of the program organization information file 220, and the individual program organization in which the organization is described. An information file 318 is created.

  Specifically, the viewing time / viewing ratio is calculated from the viewing information of the viewers registered in the viewing information database 312 of the viewer terminals 102 to 104 for the genres and performers of the programs organized in each organization pattern, Find which organization pattern has the most viewing time and viewing ratio. By creating the individual program organization information file 318 at the viewer terminal, it is possible to reduce the load on the broadcasting station apparatus 101 caused by creating the individual program organization information file 318 by the number of viewers.

  In this case, not only the individual program organization information file 318 selected by the viewer terminals 102 to 104 but also the viewer can select from the program organization information file 220.

<Program broadcast processing and program viewing processing>
Next, the program viewing process of the program organization system according to the embodiment of the present invention will be described with reference to FIG. FIG. 18 is a processing flow of program broadcast processing and program viewing processing of the program organization system according to one embodiment of the present invention, showing program broadcast processing in the broadcast station apparatus 101 and program viewing processing of the viewer terminals 102 to 104. ing.

  The broadcast station apparatus 101 performs the program broadcast process of S1501 by the content transmission program 212. Thereby, the program broadcast based on the program organization information file 220 is performed. In addition, the viewer terminals 102 to 104 perform the program viewing process of S1502 by the program viewing program 310. As a result, the program is viewed based on the individual program organization information file 318.

  In S1501, the broadcast station apparatus 101 acquires encrypted content corresponding to the content described in the program organization information file 220 from the encrypted content storage folder 1503 of the broadcast station apparatus 101, and is described in the program organization information file 220. Send it on time. When the encrypted content file 219 is distributed over the network, for example, the encrypted content of organization 1 is set to multicast address 1, the encrypted content of organization 2 is set to multicast address 2, and the encrypted content of organization 3 is organized to multicast address 3. 4 is set to be distributed to the multicast address 4.

  In S1502, the viewer terminals 102 to 104 are sent from the broadcasting station in S1205 or based on the individual programming information file 318 created by themselves based on the programming information file 220 sent from the broadcasting station. Watch content. Here, the program viewing process when the viewer 1 is assigned organization 2 as shown in FIG. 17 will be described.

  Based on the program organization of organization 2 described in the individual program organization information file 318, the viewer terminal of the viewer 1 connects to the multicast address 2 and acquires the encrypted content of organization 2. Next, the obtained encrypted content file 219 is decrypted using the content key 316 recorded in the viewer terminal, and the decrypted content is reproduced and viewed. Here, the content key 316 may be recorded on a recording medium such as an IC card and sent in advance from the broadcast station to each viewer, or may be encrypted with the public key of the viewer using a public key cryptosystem. Thus, it may be sent together with the individual program organization information file 318 in S1205.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  The present invention relates to a broadcasting station apparatus and a viewer terminal of a program organization system for organizing a program, and more particularly to a broadcast communication technology including organization of a program to be broadcast (distributed), and a viewer (listener). It can be applied to the technology that broadcasts according to the request of the company. This technique includes organizing programs and broadcasting the organized programs. Broadcast communication includes distribution of electronic content via a network in addition to so-called broadcast, and includes both radio and television broadcasts.

It is a block diagram which shows the whole structure of the program organization system which concerns on one embodiment of this invention. It is a block diagram which shows the internal structure of the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is a block diagram which shows the internal structure of the viewer terminal of the program organization system which concerns on one embodiment of this invention. It is explanatory drawing for demonstrating the outline | summary of the data flow of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the viewer registration process in the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the viewer information registration process in the viewer terminal of the program organization system which concerns on one embodiment of this invention. It is a figure which shows an example of the registration screen at the time of the viewer information registration of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the viewer information transmission process in the viewer terminal of the program organization system which concerns on one embodiment of this invention. It is a figure which shows an example of the viewer information file of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the viewer information reception process in the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the viewer information disclosure process in the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is a figure which shows an example of the viewer information file for browsing of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the viewer information browsing process in the viewer terminal of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the content registration process in the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is the whole processing flow of the program organization process in the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is a detailed processing flow of the program information preparation process of the program organization process in the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is a detailed flow of the individual program organization information creation process of the program organization process in the broadcast station apparatus of the program organization system which concerns on one embodiment of this invention. It is a processing flow of the program broadcast process of the program organization system which concerns on one embodiment of this invention, and a program viewing process.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... Broadcast station apparatus, 102-104 ... Viewer terminal, 105 ... Network, 110 ... Relay server, 201 ... CPU, 202 ... Memory | storage device, 203 ... Interface, 204 ... Communication apparatus, 205 ... Input device, 206 ... Display apparatus 207: Viewer management program, 208: Viewer information reception program, 209: Viewer information disclosure program, 210 ... Content management program, 211 ... Program organization program, 212 ... Content transmission program, 213 ... Viewer information database, 214 ... Content attribute information database, 215 ... Broadcast station common key, 216 ... Broadcast station secret key, 217 ... Broadcast station public key, 218 ... Content key, 219 ... Encrypted content file, 220 ... Program organization information file, 301 ... CPU, 302 ... Storage device, 303 ... IN 304, communication device, 305 ... input device, 306 ... display device, 307 ... viewer information registration program, 308 ... viewer information transmission program, 309 ... viewer information browsing program, 310 ... program viewing program, 311 ... viewing Viewer profile database, 312 ... viewing information database, 313 ... viewer common key, 314 ... viewer secret key, 315 ... viewer public key, 316 ... content key, 317 ... disclosure policy file, 318 ... individual program organization information file, 401 ... viewer information file, 603 ... viewer profile input field, 604 ... disclosure policy input field, 706 ... viewer signature, 905 ... viewing viewer information file, 906 ... broadcast station signature, 1503 ... encrypted content storage folder .

Claims (4)

A broadcast station device that broadcasts content to a plurality of viewer terminals,
A viewer management unit for registering viewers using the plurality of viewer terminals;
A viewer information receiving unit that collects viewer information including personal information and program viewing history information of the viewer from the plurality of viewer terminals;
A viewer information disclosure unit for browsing the viewer information collected for the viewer in response to a request from the viewer terminal;
A content management unit for managing the content to be broadcast and attribute information of the content;
A program organization table for creating a program organization table describing the content to be broadcast and an individual program organization table to be transmitted to each viewer terminal;
A content sending unit that broadcasts the content based on the program organization table,
The program organizing unit calculates the number of programs that can be broadcast in the same time period based on the transmission amount of the network between the broadcasting station device and the viewer terminal and the bit rate of the program received by the viewer terminal. Then, based on the viewer information of the entire viewer collected from the plurality of viewer terminals and the attribute information of the content, the content that is a candidate for composition is selected from the content held by the broadcast station device, A plurality of program organization tables are created with the number of simultaneously distributed contents determined based on the number of programs and the organization time zone as the organization number, and the viewers of each viewer terminal are associated with the plurality of viewer terminals. Based on the information, a program organization table including contents to be broadcast to each viewer is selected from the program organization table, and a program organization table for each viewer is created. Programs Broadcasting station apparatus and transmits the Naruhyo to each of the viewer's terminal. In the broadcasting station apparatus of Claim 1 ,
The program organizer
Viewer information analysis means for analyzing viewing trends of one or more viewers from one or more viewer information collected from the plurality of viewer terminals;
Based on the analyzed viewing trends of one or more viewers, the content information of the content is referenced to select one or more contents that are candidates for organization that matches the viewing trend, and the number of programs is determined as the number of programs. Programming information creation means for creating a plurality of programming schedules,
Individually creating a program organization table for each viewer by selecting a program organization table that matches the viewing trend of each viewer from the created program organization table based on the viewer information collected from the viewer terminal Programming information creation means;
A signature creating means for generating and assigning an electronic signature of a broadcasting station device for the created program organization table for each viewer;
A broadcasting station apparatus comprising: the created program organization table for each viewer and an electronic signature of the broadcasting station apparatus for transmitting individual program organization information to each viewer terminal. A viewer terminal that outputs content broadcast from a broadcasting station device,
A viewer information registering unit for registering viewer information including own personal information and program viewing history information;
A viewer information transmitter for transmitting the registered viewer information to the broadcast station device;
Viewer information browsing for requesting the broadcasting station apparatus to browse the registered viewer information and restoring the viewer information sent from the broadcasting station apparatus from the viewer information held by the broadcasting station apparatus. And
After transmitting the viewer information to the broadcast station apparatus, by the broadcast station apparatus, the bit rate of the program to be viewed in transmission amount and the viewer terminal network between the viewer terminal and the broadcast station apparatus The number of simultaneous distribution contents determined based on the calculated number of programs that can be broadcast in the same time zone and the organization time zone is set as the organization number , and the content that becomes the organization candidate is selected based on the viewer information of the entire viewer. From the plurality of program organization tables created , the individual program organization table for the viewer selected based on the viewer information is received from the broadcasting station device, and based on the received individual program organization table A viewer terminal, comprising: a program viewing unit that outputs content broadcast from the broadcasting station device. The viewer terminal according to claim 3 ,
The program viewing section
After transmitting the viewer information to the broadcast station apparatus, the broadcast station apparatus receives a plurality of program organization tables created by setting the number of programs that can be broadcast in the same time zone, and the received plurality of programs From the organization table, an individual program organization table is selected based on the viewer information of the viewer, and content broadcast from the broadcasting station device is output based on the selected individual program organization table. Viewer terminal.

Images