JP2016158278A - Message transmission device and message reception device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a message reception device that enables a broadcaster to identify the reception device individually without using an IC card and distribute messages to the reception device, and that also enables the broadcaster to manage the number of reception devices which perform viewing limitation.SOLUTION: A message transmission device 1B transmits an individual message, detailing message control information for grouping a message reception device 5B, with an individual identifier reported from the message reception device 5B as an address, and further generates and transmits a common message, detailing message information, with the message control information, a partial identifier for sub-grouping a digital broadcast reception device 5B, and mask information specifying a region of a part (partial identifier) of the individual identifier as an address, while updating the partial identifier so as to change the message reception device 5B which is made to receive the common message in a sub-group unit.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a message transmission device and a message reception device for distributing a message by digital broadcasting.

In recent years, digital broadcasting such as BS digital broadcasting, CS digital broadcasting, and terrestrial digital broadcasting has become widespread, and it is possible to enjoy various services such as high-quality video / audio services, data broadcasting, and interactive services in general homes. It has become.
In such digital broadcasting, in order to restrict viewing of broadcast programs depending on the presence or absence of a contract, a digital broadcast receiving apparatus (hereinafter referred to as a receiving apparatus) that has not subscribed to a broadcast program does not have a contract on the screen. Processing such as displaying a message to that effect is performed.
As a method of restricting viewing in this individual receiving device, a method of restricting with an IC card (CAS [Conditional Access System] card) given in advance for each receiving device is generally used (see, for example, Patent Document 1). .

  In this method of restricting viewing using an IC card, first, an IC card to which an individual identifier (card number or the like) is assigned and written in advance is distributed to the user (viewer) together with the receiving device. Then, the broadcaster distributes an individual message to the effect that the contract is not made using broadcast waves, with the identifier of the receiving device that has not been contracted as destination information. In the case of broadcasting distributed by MPEG-2 TS (Transport Stream), this message is distributed in EMM (Entitlement Management Message) format standardized by STD-B25 of the Radio Industries Association (ARIB). .

On the other hand, on the receiving device side, only a message whose message destination information matches the identifier of the IC card attached to the receiving device is acquired. As a result, the receiving device that has acquired a message indicating that no individual contract has been made restricts viewing by displaying a message to that effect on the screen.
As described above, at present, the broadcaster side uses the identifier of the IC card distributed to each receiving device to distribute individual messages to perform processing such as viewing restriction in the receiving device. .

JP 2008-236000 A

However, in the above-described method for specifying a receiving device using an IC card, an IC card to which an identifier is assigned in advance for each receiving device must be prepared. For this reason, since the broadcaster side must assign identifiers to the IC cards of all the receiving devices to be manufactured in advance, the management cost for managing the identifiers of the IC cards is enormous. . Further, since an IC card is prepared for each receiving device, the manufacturing cost of the card itself is required.
As described above, the method using the conventional IC card has a problem that the management cost and the cost for card production are increased.

  In addition, if an IC card is used as part of the billing system for pay broadcasting, the increase in cost can be reduced by the viewing fee, but the IC card is used as part of free broadcast content protection. In this case, an increase in the cost of the IC card becomes a big problem. Therefore, at present, a content distribution mechanism that does not use an IC card is desired.

  Furthermore, for a receiver that has not subscribed to a broadcast program, if a message indicating that the contract has not been made is displayed on the screen uniformly, a large number of viewers may be affected due to the limited broadcast period. In the case of a broadcast program in which attention is concentrated at the same time, inquiries from viewers who wish to subscribe to the broadcast program at the same time are concentrated, and the broadcaster side may not be able to handle it. For this reason, there has been a demand for a mechanism that allows the broadcaster to manage the number of receiving devices that restrict viewing.

  The present invention has been made in view of the above-described problems, and a broadcaster individually specifies a receiving device and distributes a message without giving an individual IC card to the receiving device in advance. It is an object of the present invention to provide a message transmission device and a message reception device that can manage the number of reception devices that can be viewed on the broadcast provider side.

  In order to solve the above-described problems, the present invention provides a message transmission device according to the first reference invention, a common message generation means for generating an EMM common message to be transmitted to the message reception device, and each message reception device. Individual message generating means for generating EMM individual messages to be transmitted individually and data carousel encoding means for encoding markup language into section data that can be transmitted by carousel transmission, via broadcast transmitting means, In a message transmitting apparatus that transmits the encoded markup language, EMM common message, and EMM individual message as broadcast data, an identifier storage unit, a data broadcast data storage unit, an individual identifier registration unit, The individual message generation means provides message control information notification Comprising a forming means, the common message generating means is configured to include the message information notification generation unit.

  According to such a configuration, the message transmitting apparatus encodes the markup language stored in the data broadcasting data storage means into section data that can be transmitted by carousel transmission by the data carousel encoding means. This makes it possible to transmit the markup language as a data broadcast. At this time, an instruction to read the individual identifier stored in the storage means of the message receiving device and display it on the screen in a predetermined display format is described in the markup language. As a result, the individual identifiers are displayed in a unified display format on all the message reception devices.

  Further, the message transmitting device inputs an individual identifier for identifying the message receiving device generated by the message receiving device from the outside by the individual identifier registering means, and writes and stores the individual identifier in the identifier storing means. As a result, individual information (individual identifier, personal information) for specifying each message receiving device is registered in the message transmission device on the broadcaster side.

  Then, the message transmitting device designates a group of message receiving devices to be collectively controlled in units of groups by predetermined message information transmitted by the EMM common message by the message control information notification generating unit of the individual message generating unit. The message control information notification with the message control information added is generated as an EMM individual message with the individual identifier as the destination. As a result, the message receiving apparatuses that have received the message control information by the EMM individual message are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  Then, the message transmitting apparatus generates a message information notification that is an EMM common message with the message control information as the destination and the message information as the content by the message information notification generating means of the common message generating means.

  The message transmitting apparatus according to the second reference invention is the message transmitting apparatus according to the first reference invention, further comprising a message identification table generating means, and a plurality of common message generating means and individual message generating means. .

According to such a configuration, the message transmitting device generates a message identification table including a plurality of limited reception method descriptors and service descriptors in which a limited reception method identification and a packet identifier are associated by a message identification table generating unit. Generate.
Here, the conditional access system identification is an identifier for identifying the type of the conditional access system. The packet identifier is an identifier of a packet that transmits an EMM common message and an EMM individual message.
The service descriptor is an identifier indicating that message transmission is being performed from the message transmission device (message service is being performed), and includes a conditional access system identification and a carrier identification code. is there.

Then, the message transmission apparatus associates the message control information notification with the packet identifier by the message control information notification generation unit, and associates the message control information with the packet identifier by the message information notification generation unit.
As a result, the message receiving apparatus can recognize that the message service is being implemented, and can recognize a message to itself even when a plurality of messages are delivered simultaneously.

  In addition, the message receiving device according to the third reference invention is provided for the common message receiving means for receiving the EMM common message transmitted as broadcast data from the message transmitting device via the broadcast receiving means, and for each message receiving device individually. In a message receiving apparatus comprising: an individual message receiving means for receiving an EMM individual message transmitted to the broadcast receiving means; an individual identifier generating means; a data carousel decoding means; a markup language decoding means; The individual message receiving means includes message control information notification analyzing means, and the common message receiving means includes message information notification analyzing means.

  According to this configuration, the message receiving device generates an individual identifier for individually identifying the message receiving device based on the internal information of the message receiving device, and writes and stores the individual identifier in the storage unit.

  Further, the message receiving apparatus decodes the markup language from the section data received by the broadcast receiving means by the data carousel decoding means. Then, the message receiving apparatus decodes and visualizes the markup language decoded by the data carousel decoding means by the markup language decoding means. At this time, the markup language decoding means reads out the individual identifier stored in the storage means based on the instruction described in the markup language and displays it on the screen in the designated display format.

  Then, the message receiving device uses the message control information notification analyzing unit of the individual message receiving unit to match the destination of the EMM individual message with the individual identifier stored in the storage unit and to receive the EMM common message. When a message control information notification, which is message control information for designating a group of message receiving devices to be received, is received as an EMM individual message addressed to the message receiving device, the message control information is written and stored in the storage means. Thereby, the message receiving device can receive the EMM individual message by the individual identifier managed by the broadcaster side. Further, the message receiving devices are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  The message receiving device is added to the EMM common message when the destination of the EMM common message matches the message control information stored in the storage means by the message information notification analyzing means of the common message receiving means. Message information is received as a message addressed to the message receiving apparatus.

  Further, the message receiving device according to the fourth reference invention is the message receiving device according to the third reference invention, further comprising an area code setting means for setting the area code where the message receiving apparatus is installed in the area code storage means, The individual identifier generating means is configured to generate an individual identifier by concatenating a random number generated by the random number generating means and the area code set in the area code storage means.

According to such a configuration, the message receiving device generates the individual identifier by connecting the random number and the area code by the individual identifier generating unit. Thereby, compared with the case where individual identifiers that consider duplication are generated throughout Japan, it is only necessary to generate individual identifiers that consider duplication for each prefecture, so that the data length of the individual identifier can be shortened.
Furthermore, since this area code corresponds to an area-specific character string (for example, “Tokyo”), when the individual identifier display means displays the individual identifier, only the area code portion is replaced with characters other than numerals. Can also be displayed.

  Further, a message receiving apparatus according to the fifth reference invention is the message receiving apparatus according to the third and fourth reference inventions, comprising a limited reception method identification storage means and a message identification table receiving means, and this message identification table receiving means. However, the service descriptor analyzing unit and the conditional access system descriptor analyzing unit are provided.

According to such a configuration, the message receiving apparatus stores in advance the conditional access system identification that is an identifier for identifying the type of the conditional access system.
Then, the message receiving device searches the service descriptor analyzing means of the message identification table receiving means for the same identifier as the conditional access system identification stored in the conditional access system identification storage means in a plurality of service descriptors, and the same It is determined that message transmission is being performed when there is a conditional access method identification.
Then, when the message receiving apparatus determines that the message transmission is being performed by the conditional access method descriptor analyzing unit of the message identification table receiving unit, the message reception device uses the same identifier as the conditional access method identification to identify a plurality of limited reception methods. Search in the descriptor and extract the packet identifier associated with the same conditional access system identification.

  The message distribution system as the sixth reference invention encodes common message generating means for generating a common message, individual message generating means for generating an individual message, and section data that can be transmitted by carousel transmission. A data carousel encoding unit, and a message transmission device that transmits the encoded BML data, the common message, and the individual message as broadcast data via a broadcast transmission unit, and a broadcast reception unit A message receiving device comprising: a common message receiving means for receiving the common message via the broadcast receiving means; and a separate message receiving means for receiving the individual message via the broadcast receiving means. A message delivery system for performing the message A message control information notification generation unit in the individual message generation unit, a message information notification generation unit in the common message generation unit, and the message reception unit includes an individual identifier generation unit, an individual identifier, A display means, a data carousel decoding means, and a BML decoding means, the individual message receiving means is provided with a message control information notification analyzing means, and the common message receiving means is provided with a message information notification analyzing means; did.

  According to such a configuration, the message distribution system transmits BML data describing an instruction to display the individual identifier, encoded by the data carousel encoding means, from the message transmission device to the message reception device as a data broadcast. To do.

  In addition, the message delivery system adds message control information for designating a group of message receiving devices to be processed as predetermined message information transmitted as a common message by the message control information notification generating unit of the individual message generating unit. The message control information notification is generated as an individual message with the individual identifier as a destination. As a result, the message receiving apparatuses that have received the message control information as individual messages are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

The message transmitting device is an identifier indicating a part of the message control information and the individual identifier by the message information notification generating unit of the common message generating unit, and is a message receiving device grouped by the message control information. , A common identifier with message information as a destination, with a partial identifier for sub-grouping the message receivers to process the message information, and mask information for specifying a partial (partial identifier) area in the individual identifier Message information notifications, which are messages, are sequentially generated while updating the partial identifier at predetermined time intervals, and are sequentially transmitted to the message receiving device.
As a result, the message transmission device can transmit a message to the message reception devices grouped by the message control information and sub-grouped by the partial identifier and the mask information in the common message. Further, the number of message receiving devices that process message information (display messages) can be managed on the message transmitting device side.

  On the other hand, the message receiving device generates an individual identifier for individually identifying the message receiving device based on the internal information of the message receiving device by the individual identifier generating unit, and writes and stores it in the storage unit. Then, the message receiving device displays the individual identifier generated by the individual identifier generating unit on the screen as information for notifying the broadcaster side by the individual identifier display unit. Thereby, the user (viewer) of the message receiving apparatus can notify the individual identifier to the broadcaster, for example, by telephone or the like.

  Further, when the message receiving apparatus decodes and visualizes the BML data decoded by the data carousel decoding means, the message receiving apparatus reads the individual identifier stored in the storage means and displays it on the screen. As a result, the message delivery system can display the individual identifier in a predetermined display format in the message receiving device by data broadcasting.

  Then, the message receiving apparatus receives the message information transmitted by the message control information notification analyzing unit of the individual message receiving unit, where the destination of the individual message matches the individual identifier stored in the storage unit, and the content is transmitted as a common message. When a message control information notification, which is message control information for designating a group of message receiving devices to be processed, is received as an individual message addressed to the message receiving device, the message control information is written and stored in the storage means. Thereby, the message receiving device can receive the individual message by the individual identifier managed by the broadcaster side. Further, the message receiving devices are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  Then, the message receiving device is an identifier indicating a part of the message control information and the individual identifier as a common message from the message transmitting device by the message information notification analyzing unit of the common message receiving unit. Out of the message receivers, the message identifiers for which the message information is to be processed are sub-grouped, and the mask information for specifying a partial (partial identifier) area in the individual identifier is the destination, When a message information notification including message information is transmitted, the message control information that is the destination of the common message matches the message control information stored in the storage unit and is stored in the storage unit. Specified by the mask information of the individual identifier Values in the region, when matching the partial identifiers, receives the message information added to the common message as a message addressed to the message reception apparatus. As a result, the message receiving apparatus can receive a message addressed to the same group as a common message.

  The message delivery system as a seventh reference invention is the message delivery system according to the sixth reference invention, wherein the message transmitting device further comprises a message identification table generating means, and the common message generating means and the individual message generating means. Each of the plurality of message receiving devices includes a conditional access system identification storage unit and a message identification table reception unit. The message identification table reception unit includes a service descriptor analysis unit, a limited reception system descriptor analysis unit, and It was set as the structure provided with.

According to such a configuration, the message delivery system receives a plurality of conditional access system identifications and packet identifiers from the outside by the message identification table generating means in the message transmission device, and for each conditional access system identification, a service descriptor, A message identification table including a plurality of conditional access system descriptors in which the conditional access system identification and the packet identifier are associated with each other is generated.
Then, the message transmission device transmits the message identification table as broadcast data by the broadcast transmission means, adds a different packet identifier for each of the plurality of common message generation means and individual message generation means, and transmits the generated message to the packet data. Send as.

On the other hand, the message receiving device searches for the same identifier as the conditional access system identification stored in the conditional access system identification storage means by the service descriptor analysis means of the message identification table reception means in a plurality of service descriptors, and is the same It is determined that message transmission is being performed when there is a conditional access method identification.
Then, when the message receiving apparatus determines that the message transmission is being performed by the conditional access method descriptor analyzing unit of the message identification table receiving unit, the message reception device uses the same identifier as the conditional access method identification to identify a plurality of limited reception methods. Search in the descriptor and extract the packet identifier associated with the same conditional access system identification.
Then, the message receiving device extracts, from the broadcast data, the packet data having the packet identifier extracted by the conditional access method descriptor analyzing unit as a message to the message receiving device.

  The message transmitting device according to claim 1 generates a common message generating means for generating an EMM common message to be transmitted to the message receiving device, and an EMM individual message to be individually transmitted to each message receiving device. In the message transmitting device, comprising: an individual message generating unit, and transmitting the encoded markup language data, the EMM common message, and the EMM individual message as broadcast data via the broadcast transmitting unit. A data storage unit, an individual identifier registration unit, and a designated identifier registration unit, the individual message generation unit includes a designation identifier notification generation unit and a message control information notification generation unit, and the common message generation unit includes a message. The information notification generating means is provided.

  According to such a configuration, the message transmitting apparatus inputs the individual identifier for identifying the message receiving apparatus from the outside by the individual identifier registering means, and writes and stores the individual identifier in the identifier storing means. As a result, individual information (individual identifier, personal information) for specifying each message receiving device is registered in the message transmission device on the broadcaster side.

  At this time, a program for reading the individual identifier stored in the storage means of the message receiving device and displaying it on the screen is added to the markup language data. As a result, the individual identifiers are displayed in a unified display format on all the message reception devices.

  Also, the message transmitting device writes and stores a specified identifier, which is an identifier for individually identifying the message receiving device on the broadcaster side, in the identifier storage unit by the specified identifier registration unit. As a result, the message transmitting apparatus can manage each message receiving apparatus with an identifier assigned by the broadcaster.

  Further, the message transmitting device generates and transmits a specified identifier notification having the individual identifier as the message destination and the specified identifier as the message content as an EMM individual message by the specified identifier notification generating unit of the individual message generating unit. As a result, the specified identifier notified by the specified identifier notification is stored in the message receiving device corresponding to the individual identifier, and the individual message receiving device can be specified by the specified identifier from the message transmitting device. .

  Then, the message transmitting apparatus specifies message control information for specifying a group of message receiving apparatuses to be collectively controlled by the message information transmitted as the EMM common message by the message control information notification generating means of the individual message generating means. Is added as an EMM individual message with the specified identifier as the destination. As a result, the message can be individually delivered to the message receiving device using the designated identifier managed by the broadcaster. Further, the message receiving apparatuses that have received the message control information by the EMM individual message are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  Then, the message transmitting device generates a message information notification, which is a common message having the message control information as the destination and the message information as contents, by the message information notification generating unit of the common message generating unit.

  According to an eighth aspect of the present invention, there is provided a message transmitting apparatus according to claim 1, further comprising a message identification table generating means and a plurality of common message generating means and individual message generating means. .

According to such a configuration, the message transmitting device generates a message identification table including a plurality of limited reception method descriptors and service descriptors in which a limited reception method identification and a packet identifier are associated by a message identification table generating unit. Generate.
Here, the conditional access system identification is an identifier for identifying the type of the conditional access system. The packet identifier is an identifier of a packet that transmits an EMM common message and an EMM individual message.
The service descriptor is an identifier indicating that message transmission is being performed from the message transmission device (message service is being performed), and includes a conditional access system identification and a carrier identification code. is there.

Then, the message transmitting apparatus associates the designated identifier notification with the packet identifier by the designated identifier notification generating means.
As a result, the message receiving apparatus can recognize that the message service is being implemented, and can recognize a message to itself even when a plurality of messages are delivered simultaneously.

  A message receiving device according to claim 2 is a common message receiving means for receiving an EMM common message transmitted as broadcast data from the message transmitting device according to claim 1 via the broadcast receiving means, and each message. In a message receiving apparatus comprising an individual message receiving means for receiving an EMM individual message individually transmitted to the receiving apparatus via a broadcast receiving means, a storage means, a data carousel decoding means, a markup language decoding And an individual message receiving unit including a designated identifier analyzing unit and a message control information notification analyzing unit, and a common message receiving unit including a message information notification analyzing unit.

  According to such a configuration, the message receiving device stores the individual identifier for identifying the message receiving device in the storage unit. For example, a unique identifier is written in advance in the storage means as an individual identifier by the manufacturer of the message receiving device.

  Further, the message receiving device decodes the markup language data to which the program for reading the individual identifier stored in the storage unit from the section data received by the broadcast receiving unit and displaying it on the screen is added by the decoding unit. . Then, the message receiving apparatus decrypts and visualizes the markup language data decrypted by the decrypting means by the markup language decrypting means. At this time, the markup language decoding means reads out the individual identifier stored in the storage means based on a program added to the markup language data and displays it on the screen.

  Then, the message receiving device receives, by the EMM individual message, the designated identifier notification having the individual identifier as the message destination and the designated identifier generated on the broadcaster side as the message content by the designated identifier analyzing unit of the individual message receiving unit. When this is done, the specified identifier is written and stored in the storage means. As a result, the message receiving device stores the designated identifier notified by the designated identifier notification from the message transmitting device in the storage means, and is in a state where it can be managed by the designated identifier managed on the broadcaster side.

  Then, the message receiving apparatus receives the message information in which the destination of the EMM individual message matches the designated identifier stored in the storage unit and the content is transmitted as an EMM common message by the message control information notification analyzing unit of the individual message. When the message control information notification to which the message control information for designating the group of the message receiving device to be collectively controlled by the group is received by the EMM individual message, the message control information is written and stored in the storage means. As a result, the message receiving apparatus can receive the EMM individual message using the designated identifier managed by the broadcaster. Further, the message receiving devices are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  Further, the message receiving device is added to the EMM common message when the destination of the EMM common message matches the message control information stored in the storage means by the message information notification analyzing means of the common message receiving means. Message information is received as a message addressed to the message receiving apparatus.

  Further, a message receiving apparatus as a ninth reference invention is the message receiving apparatus according to claim 2, further comprising a limited reception method identification storing means and a message identification table receiving means, wherein the message identification table receiving means comprises: The service descriptor analyzing unit and the conditional access system descriptor analyzing unit are provided.

According to such a configuration, the message receiving apparatus stores in advance the conditional access system identification, which is an identifier for identifying the type of the conditional access system, in the conditional access system identification storage unit.
Then, the message receiving device searches the service descriptor analyzing means of the message identification table receiving means for the same identifier as the conditional access system identification stored in the conditional access system identification storage means in a plurality of service descriptors, and the same It is determined that message transmission is being performed when there is a conditional access method identification.
Then, when the message receiving apparatus determines that the message transmission is being performed by the conditional access method descriptor analyzing unit of the message identification table receiving unit, the message reception device uses the same identifier as the conditional access method identification to identify a plurality of limited reception methods. Search in the descriptor and extract the packet identifier associated with the same conditional access system identification.
Then, the message receiving device extracts, from the broadcast data, the packet data having the packet identifier extracted by the conditional access method descriptor analyzing unit as a message to the message receiving device.
Then, when the message destination notified by the individual message receiving unit in the EMM individual message corresponding to the extracted packet identifier matches the specified identifier stored in the storage unit, the message receiving device Is received as a message addressed to the message receiving apparatus.

  The message distribution system as a tenth reference invention encodes common message generating means for generating a common message, individual message generating means for generating an individual message, and section data that can be transmitted by carousel transmission. A data carousel encoding unit, and a message transmission device that transmits the encoded BML data, the common message, and the individual message as broadcast data via a broadcast transmission unit, and a broadcast reception unit A message receiving device comprising: a common message receiving means for receiving the common message via the broadcast receiving means; and a separate message receiving means for receiving the individual message via the broadcast receiving means. A message delivery system for performing The message transmission device includes an individual identifier registration unit and a designated identifier registration unit, the individual message generation unit includes a designation identifier notification generation unit, and a message control information notification generation unit, and the common message generation unit includes A message information notification generating unit, and the message receiving device includes an individual identifier display unit, a data carousel decoding unit, a BML decoding unit, and a designated identifier analyzing unit, and the individual message receiving unit includes message control. An information notification analysis unit is provided, and the common message reception unit includes a message information notification analysis unit.

  According to such a configuration, the message delivery system includes an individual identifier for identifying the message receiving device notified to the broadcaster in advance by the individual identifier registration means in the message transmitting device, and the user of the message receiving device. Personal information is input from the outside, and the individual identifier is associated with the personal information and written and stored in the identifier storage means. As a result, individual information (individual identifier, personal information) for specifying each message receiving device is registered in the message transmission device on the broadcaster side.

  Further, the message distribution system transmits BML data describing an instruction to display the individual identifier, encoded by the data carousel encoding means, from the message transmission device to the message reception device as a data broadcast.

  Further, the message transmitting device uses the individual identifier for identifying the message receiving device notified to the broadcaster in advance by the designated identifier notification generating unit of the individual message generating unit as a message destination, and corresponds to the individual identifier. Then, a specified identifier notification having a specified identifier, which is a new identifier for identifying the message receiving device on the broadcaster side, is generated and transmitted as an individual message. As a result, the specified identifier notified by the specified identifier notification is stored in the message receiving device corresponding to the individual identifier, and the individual message receiving device can be specified by the specified identifier from the message transmitting device. .

Then, the message transmitting device receives the message control information and an identifier indicating a part of the individual identifier or the specified identifier by the message information notification generating unit of the common message generating unit, and grouped with the message control information. Among the devices, a message is a message that is a target for processing the message receiving device, a partial identifier and mask information that specifies a partial (partial identifier) area in the individual identifier or the specified identifier, and the message Message information notifications, which are common messages containing information, are sequentially generated while the partial identifier is updated at predetermined time intervals, and are sequentially transmitted to the message receiving device.
As a result, the message transmission device can transmit a message to the message reception devices grouped by the message control information and sub-grouped by the partial identifier and the mask information in the common message. Further, the number of message receiving devices that process message information (display messages) can be managed on the message transmitting device side.

  On the other hand, the message receiving device stores in advance an individual identifier for identifying the message receiving device in the storage means. For example, a unique identifier is written in advance in the storage means as an individual identifier by the manufacturer of the message receiving device. Then, the message receiving device displays the individual identifier stored in the storage unit on the screen as information for notifying the broadcaster side of the individual identifier by the individual identifier display unit. Thereby, the user (viewer) of the message receiving apparatus can notify the individual identifier to the broadcaster, for example, by telephone or the like.

  Further, when the message receiving apparatus decodes and visualizes the BML data decoded by the data carousel decoding means, the message receiving apparatus reads the individual identifier stored in the storage means and displays it on the screen. As a result, the message delivery system can display the individual identifier in a predetermined display format in the message receiving device by data broadcasting.

  Further, the message receiving device is an individual message in which the individual identifier is used as the message destination by the designation identifier analyzing unit of the individual message receiving unit, and the designated identifier generated for the individual identifier on the broadcaster side is the content of the message. When the designation identifier notification is received, the designation identifier is written and stored in the storage means. As a result, the message receiving device stores the designated identifier notified by the designated identifier notification from the message transmitting device in the storage means, and is in a state where it can be managed by the designated identifier managed on the broadcaster side.

  Then, the message receiving device receives message information in which the destination of the individual message matches the specified identifier stored in the storage unit and the content is transmitted as a common message by the message control information notification analyzing unit of the individual message receiving unit. When a message control information notification, which is message control information for designating a group of message receiving devices to be processed, is received as an individual message addressed to the message receiving device, the message control information is written and stored in the storage means. Thereby, the message receiving device can receive the individual message by the designated identifier managed by the broadcaster side. Further, the message receiving devices are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  Then, the message receiving device is an identifier indicating a part of the message control information and the individual identifier or the specified identifier as a common message from the message transmitting device by the message information notification analyzing unit of the common message receiving unit. Out of message receivers grouped by information, a destination is a partial identifier for sub-grouping message receivers to be processed for message information, and mask information for specifying a partial area in an individual identifier or a specified identifier. If the specified identifier is stored in the storage unit when the message information notification including the message information is transmitted, the message control information that is the destination of the common message is stored in the storage unit. It matches the control information and is a memory Only when the value in the partial area specified by the mask information of the designated identifier stored in the message matches the partial identifier, the message information added to the common message is used as the message addressed to the message receiving device. Received and the specified identifier is not stored in the storage means, the value in the partial area where the destination of the common message matches the message control information and specified based on the mask information of the individual identifier is Only when it matches the partial identifier, the message information added to the common message is received as a message addressed to the message receiving device. As a result, the message receiving apparatus can receive a message in the same group and addressed to the same subgroup as a common message.

  The message distribution system as the eleventh reference invention is the message distribution system according to the tenth reference invention, wherein the message transmitting device further comprises a message identification table generation means, and the common message generation means and the individual message generation means. Each of the plurality of message receiving devices includes a conditional access system identification storage unit and a message identification table reception unit. The message identification table reception unit includes a service descriptor analysis unit, a limited reception system descriptor analysis unit, and It was set as the structure provided with.

According to such a configuration, the message delivery system receives a plurality of conditional access system identifications and packet identifiers from the outside by the message identification table generating means in the message transmission device, and for each conditional access system identification, a service descriptor, A message identification table including a plurality of conditional access system descriptors in which the conditional access system identification and the packet identifier are associated with each other is generated.
Then, the message transmission device transmits the message identification table as broadcast data by the broadcast transmission means, adds a different packet identifier for each of the plurality of common message generation means and individual message generation means, and transmits the generated message to the packet data. Send as.

On the other hand, the message receiving device searches for the same identifier as the conditional access system identification stored in the conditional access system identification storage means by the service descriptor analysis means of the message identification table reception means in a plurality of service descriptors, and is the same It is determined that message transmission is being performed when there is a conditional access method identification.
Then, when the message receiving apparatus determines that the message transmission is being performed by the conditional access method descriptor analyzing unit of the message identification table receiving unit, the message reception device uses the same identifier as the conditional access method identification to identify a plurality of limited reception methods. Search in the descriptor and extract the packet identifier associated with the same conditional access system identification.
Then, the message receiving device extracts, from the broadcast data, the packet data having the packet identifier extracted by the conditional access method descriptor analyzing unit as a message to the message receiving device.

  A message transmitting apparatus as a twelfth reference invention includes a common message generating means for generating a common message that is a common message for a message receiving apparatus, and an individual message for individually transmitting to each message receiving apparatus. Message generating means, and data carousel encoding means for encoding BML data into section data that can be transmitted by carousel transmission. The encoded BML data and the common message are transmitted via broadcast transmission means. In the message transmission device that transmits the individual message as broadcast data, an identifier storage unit, an individual identifier duplication determination unit, an individual identifier registration unit, a data broadcast data storage unit, and a designated identifier registration unit are provided. The individual message generating means includes designated identification Comprising a notification generating unit, and a message control information notification generating unit, the common message generating means has a configuration including the message information notification generation unit.

  According to such a configuration, the message transmission device includes the individual identifier for identifying the message reception device generated by the message reception device by the individual identifier duplication determination unit and previously notified to the broadcaster side, and the message reception device. The personal information of the user is input from the outside, and it is determined whether or not the individual identifier is stored in the identifier storage means. When the individual identifier registration unit determines that the individual identifier is not stored by the individual identifier registration unit, the message transmission device writes the individual identifier in association with the personal information in the identifier storage unit. Remember. As a result, individual information (individual identifier, personal information) for specifying individual message receiving devices is registered in the message transmission device on the broadcaster side without duplication.

  Further, the message transmitting apparatus encodes the BML data stored in the data broadcasting data storage means into section data that can be transmitted by carousel transmission by the data carousel encoding means. This makes it possible to transmit BML data as a data broadcast. At this time, an instruction to read the individual identifier stored in the storage unit of the message receiving device and display it on the screen in a predetermined display format is described in the BML data. As a result, the individual identifiers are displayed in a unified display format on all the message reception devices.

  Then, the message transmitting apparatus writes and stores the specified identifier, which is a new identifier for individually identifying the message receiving apparatus on the broadcast provider side, in association with the individual identifier by the specified identifier registering means in the identifier storing means. As a result, the message transmitting apparatus can manage each message receiving apparatus using an identifier assigned by the broadcaster.

  Then, the message transmission device generates, as an individual message, a specified identifier notification having the individual identifier as the message destination and the specified identifier corresponding to the individual identifier as the message content, by the specified identifier notification generating unit of the individual message generating unit. To send. As a result, the specified identifier notified by the specified identifier notification is stored in the message receiving device corresponding to the individual identifier, and the individual message receiving device can be specified by the specified identifier from the message transmitting device. .

  Then, the message transmitting device transmits the specified identifier notification as an individual message to the message receiving device by the message control information notification generating unit of the individual message generating unit, and then uses the specified identifier corresponding to the personal information specified from the outside as the destination. Then, a message control information notification to which message control information for designating a group of message receiving apparatuses to be processed as predetermined message information transmitted as a common message is added is generated as an individual message. As a result, the message can be individually delivered to the message receiving device using the designated identifier managed by the broadcaster. Further, the message receiving apparatuses that have received the message control information as individual messages are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

Then, the message transmitting device receives the message control information and an identifier indicating a part of the individual identifier or the specified identifier by the message information notification generating unit of the common message generating unit, and grouped with the message control information. Among the devices, a message is a message that is a target for processing the message receiving device, a partial identifier and mask information that specifies a partial (partial identifier) area in the individual identifier or the specified identifier, and the message A message information notification, which is a common message with information as content, is generated.
As a result, the message transmission device can transmit a message to the message reception devices grouped by the message control information and sub-grouped by the partial identifier and the mask information in the common message.

In addition, the message transmitting apparatus uses the message information notification generating means of the common message generating means to switch the message receiving apparatus to be processed (displaying the message) the message information in units of subgroups for a predetermined time. The message information notification including the updated partial identifier is sequentially generated.
Accordingly, the number of message receiving devices that process message information (display messages) can be managed on the message transmitting device side.

  A message transmitting apparatus as a thirteenth reference invention is the message transmitting apparatus according to the twelfth reference invention, further comprising a message identification table generating means, and a plurality of the common message generating means and the individual message generating means. did.

According to such a configuration, the message transmission device inputs a plurality of conditional access system identifications and packet identifiers from the outside by the message identification table generating means, and for each conditional access system identification, a service descriptor, a conditional access system identification, A message identification table including a plurality of conditional access system descriptors associated with packet identifiers is generated.
Here, the conditional access system identification is an identifier stored in advance in a message receiving apparatus for receiving a limited message from a plurality of messages. The packet identifier is an identifier of a packet that transmits a common message and an individual message.
The service descriptor is an identifier indicating that message transmission is being performed from the message transmission device (message service is being performed), and includes a conditional access system identification and a carrier identification code. is there.

Then, the message transmission device transmits the message identification table as broadcast data by the broadcast transmission means, adds a different packet identifier for each of the plurality of common message generation means and individual message generation means, and transmits the generated message to the packet data. Send as.
As a result, the message receiving apparatus can recognize that the message service is being implemented, and can recognize a message to itself even when a plurality of messages are delivered simultaneously.

  A message receiving device as a fourteenth reference invention is a common message receiving means for receiving a common message, which is a common message to the message receiving device transmitted as broadcast data from the message transmitting device, via the broadcast receiving means. And an individual message receiving means for receiving an individual message individually transmitted to each message receiving apparatus via the broadcast receiving means. In the message receiving apparatus, the individual identifier generating means and the individual identifier display means And a data carousel decoding means and a BML decoding means, wherein the individual message receiving means comprises a designated identifier analyzing means and a message control information notification analyzing means, and the common message receiving means is a message information notification It was set as the structure provided with an analysis means.

  According to this configuration, the message receiving device generates the individual identifier for individually identifying the message receiving device based on the internal information of the message receiving device by the individual identifier generating unit. Then, the message receiving device displays the individual identifier generated by the individual identifier generating means as information for notifying the broadcaster side by the individual identifier display means. Thereby, the user (viewer) of the message receiving apparatus can notify the individual identifier to the broadcaster, for example, by telephone or the like.

  Further, the message receiving apparatus decodes the BML data from the section data received by the broadcast receiving means by the data carousel decoding means. Then, the message receiving apparatus decodes and visualizes the BML data decoded by the data carousel decoding means by the BML decoding means. At this time, the BML decoding means reads out the individual identifier stored in the storage means based on the instruction described in the BML data and displays it on the screen in the designated display format.

  Further, the message receiving device is an individual message having the individual identifier as the message destination by the designated identifier analyzing unit of the individual message receiving unit and the designated identifier generated for the individual identifier on the broadcaster side as the content of the message. When the designation identifier notification is received, the designation identifier is written and stored in the storage means. As a result, the message receiving device stores the designated identifier notified by the designated identifier notification from the message transmitting device in the storage means, and is in a state where it can be managed by the designated identifier managed on the broadcaster side.

  Then, the message receiving device uses the message control information notification analyzing unit for the individual message so that the destination of the individual message received via the broadcast receiving unit matches the individual identifier stored in the storage unit, and the content is the common message. Means for storing message control information when a message control information notification, which is message control information for designating a group of message receiving devices to be processed as message information, is received as an individual message addressed to the message receiving device. To write and memorize. Thereby, the message receiving device can receive the individual message by the designated identifier managed by the broadcaster side. Further, the message receiving devices are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  Then, the message receiving device is an identifier indicating a part of the message control information and the individual identifier or the specified identifier as a common message from the message transmitting device by the message information notification analyzing unit of the common message receiving unit. Out of message receivers grouped by information, a destination is a partial identifier for sub-grouping message receivers to be processed for message information, and mask information for specifying a partial area in an individual identifier or a specified identifier. If the specified identifier is stored in the storage unit when the message information notification including the message information is transmitted, the message control information that is the destination of the common message is stored in the storage unit. It matches the control information and is a memory Only when the value in the partial area specified by the mask information of the designated identifier stored in the message matches the partial identifier, the message information added to the common message is used as the message addressed to the message receiving device. Received and the specified identifier is not stored in the storage means, the value in the partial area where the destination of the common message matches the message control information and specified based on the mask information of the individual identifier is Only when it matches the partial identifier, the message information added to the common message is received as a message addressed to the message receiving device. As a result, the message receiving apparatus can receive a message in the same group and addressed to the same subgroup as a common message.

  Further, the message receiving device as the fifteenth reference invention further comprises a region code setting means for writing and setting the region code in which the message receiving device is installed in the region code storage means in the message receiving device of the fourteenth reference invention. The individual identifier generating unit generates the individual identifier by connecting, as the internal information, a random number generated by a random number generating unit and a region code set in the region code storage unit.

According to this configuration, the individual identifier is generated by connecting the random number and the area code by the individual identifier generating means. Thereby, compared with the case where individual identifiers that consider duplication are generated throughout Japan, it is only necessary to generate individual identifiers that consider duplication for each prefecture, so that the data length of the individual identifier can be shortened.
Furthermore, since this area code corresponds to an area-specific character string (for example, “Tokyo”), when the individual identifier display means displays the individual identifier, only the area code portion is replaced with characters other than numerals. Can also be displayed.

  Further, a message receiving apparatus as a sixteenth reference invention is the message receiving apparatus described in the fourteenth reference invention or the fifteenth reference invention, comprising a limited reception method identification storing means and a message identification table receiving means. The identification table receiving unit includes a service descriptor analyzing unit and a conditional access system descriptor analyzing unit.

According to such a configuration, the message receiving apparatus stores in advance the conditional access system identification, which is an identifier for limiting and receiving one message from a plurality of messages, in the conditional access system identification storage means.
Then, the message receiving device searches the service descriptor analyzing means of the message identification table receiving means for the same identifier as the conditional access system identification stored in the conditional access system identification storage means in a plurality of service descriptors, and the same It is determined that message transmission is being performed when there is a conditional access method identification.
Then, when the message receiving apparatus determines that the message transmission is being performed by the conditional access method descriptor analyzing unit of the message identification table receiving unit, the message reception device uses the same identifier as the conditional access method identification to identify a plurality of limited reception methods. Search in the descriptor and extract the packet identifier associated with the same conditional access system identification.
Then, the message receiving device extracts, from the broadcast data, the packet data having the packet identifier extracted by the conditional access method descriptor analyzing unit as a message to the message receiving device.

  The message distribution system as the seventeenth reference invention encodes common message generating means for generating a common message, individual message generating means for generating an individual message, and section data that can be transmitted by carousel transmission. A data carousel encoding unit, and a message transmission device that transmits the encoded BML data, the common message, and the individual message as broadcast data via a broadcast transmission unit, and a broadcast reception unit A message receiving device comprising: a common message receiving means for receiving the common message via the broadcast receiving means; and an individual message receiving means for receiving the individual message via the broadcast receiving means. A message delivery system for performing the message The individual message generating means includes a designated identifier notification analyzing means and a message control information notification generating means, the common message generating means includes a message information notification generating means, and the message receiving apparatus includes: An individual identifier generating unit, an individual identifier display unit, a data carousel decoding unit, and a BML decoding unit, and the individual message receiving unit includes a designated identifier analyzing unit and a message control information notification analyzing unit, The common message receiving unit includes a message information notification analyzing unit.

  According to such a configuration, the message distribution system transmits BML data describing an instruction to display the individual identifier, encoded by the data carousel encoding means, from the message transmission device to the message reception device as a data broadcast. To do.

  In the message delivery system, the message receiving device generated by the message receiver in the individual message generator by the specified identifier notification generator of the individual message generator and previously notified to the broadcaster side in the message transmitter. A message with a designated identifier notification that uses an individual identifier for identification as a message destination, a designated identifier corresponding to the individual identifier, and a new identifier for individually identifying the message receiving device on the broadcaster side. A specified identifier notification having the contents of is generated and transmitted as an individual message. As a result, the specified identifier notified by the specified identifier notification is stored in the message receiving device corresponding to the individual identifier, and the individual message receiving device can be specified by the specified identifier from the message transmitting device. .

  Then, the message transmitting device transmits the specified identifier notification as an individual message to the message receiving device by the message control information notification generating unit of the individual message generating unit, and then uses the specified identifier corresponding to the personal information specified from the outside as the destination. Then, a message control information notification to which message control information for designating a group of message receiving apparatuses to be processed as predetermined message information transmitted as a common message is added is generated as an individual message. As a result, the message can be individually delivered to the message receiving device using the designated identifier managed by the broadcaster. Further, the message receiving apparatuses that have received the message control information as individual messages are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

Then, the message transmitting device receives the message control information and an identifier indicating a part of the individual identifier or the specified identifier by the message information notification generating unit of the common message generating unit, and grouped with the message control information. Among the devices, a message is a message that is a target for processing the message receiving device, a partial identifier and mask information that specifies a partial (partial identifier) area in the individual identifier or the specified identifier, and the message Message information notifications, which are common messages containing information, are sequentially generated while the partial identifier is updated at predetermined time intervals, and are sequentially transmitted to the message receiving device.
As a result, the message transmission device can transmit a message to the message reception devices grouped by the message control information and sub-grouped by the partial identifier and the mask information in the common message. Further, the number of message receiving devices that process message information (display messages) can be managed on the message transmitting device side.

  On the other hand, the message receiving device stores in advance an individual identifier for identifying the message receiving device in the storage means. For example, a unique identifier is written in advance in the storage means as an individual identifier by the manufacturer of the message receiving device. Then, the message receiving device displays the individual identifier stored in the storage unit on the screen as information for notifying the broadcaster side of the individual identifier by the individual identifier display unit.

  Further, when the message receiving apparatus decodes and visualizes the BML data decoded by the data carousel decoding means, the message receiving apparatus reads the individual identifier stored in the storage means and displays it on the screen. As a result, the message delivery system can display the individual identifier in a predetermined display format in the message receiving device by data broadcasting.

  Further, the message receiving device is an individual message in which the individual identifier is used as the message destination by the designation identifier analyzing unit of the individual message receiving unit, and the designated identifier generated for the individual identifier on the broadcaster side is the message content. When the designation identifier notification is received, the designation identifier is written and stored in the storage means. As a result, the message receiving device stores the designated identifier notified by the designated identifier notification from the message transmitting device in the storage means, and is in a state where it can be managed by the designated identifier managed on the broadcaster side.

  Then, the message receiving device receives message information in which the destination of the individual message matches the specified identifier stored in the storage unit and the content is transmitted as a common message by the message control information notification analyzing unit of the individual message receiving unit. When a message control information notification, which is message control information for designating a group of message receiving devices to be processed, is received as an individual message addressed to the message receiving device, the message control information is written and stored in the storage means. Thereby, the message receiving device can receive the individual message by the designated identifier managed by the broadcaster side. Further, the message receiving devices are grouped according to the value of the message control information. For example, the individual message receiving devices are grouped depending on whether or not there is a viewing contract.

  Then, the message receiving device is an identifier indicating a part of the message control information and the individual identifier or the specified identifier as a common message from the message transmitting device by the message information notification analyzing unit of the common message receiving unit. Out of message receivers grouped by information, a destination is a partial identifier for sub-grouping message receivers to be processed for message information, and mask information for specifying a partial area in an individual identifier or a specified identifier. If the specified identifier is stored in the storage unit when the message information notification including the message information is transmitted, the message control information that is the destination of the common message is stored in the storage unit. It matches the control information and is a memory Only when the value in the partial area specified by the mask information of the designated identifier stored in the message matches the partial identifier, the message information added to the common message is used as the message addressed to the message receiving device. Received and the specified identifier is not stored in the storage means, the value in the partial area where the destination of the common message matches the message control information and specified based on the mask information of the individual identifier is Only when it matches the partial identifier, the message information added to the common message is received as a message addressed to the message receiving device. As a result, the message receiving apparatus can receive a message in the same group and addressed to the same subgroup as a common message.

  The message delivery system as an eighteenth reference invention is the message delivery system according to the seventeenth reference invention, wherein the message transmitting device further comprises a message identification table generating means, and the common message generating means and the individual message generating means. Each of the plurality of message receiving devices includes a conditional access system identification storage unit and a message identification table reception unit. The message identification table reception unit includes a service descriptor analysis unit, a limited reception system descriptor analysis unit, and It was set as the structure provided with.

According to such a configuration, the message delivery system receives a plurality of conditional access system identifications and packet identifiers from the outside by the message identification table generating means in the message transmission device, and for each conditional access system identification, a service descriptor, A message identification table including a plurality of conditional access system descriptors in which the conditional access system identification and the packet identifier are associated with each other is generated.
Then, the message transmission device transmits the message identification table as broadcast data by the broadcast transmission means, adds a different packet identifier for each of the plurality of common message generation means and individual message generation means, and transmits the generated message to the packet data. Send as.

On the other hand, the message receiving device searches for the same identifier as the conditional access system identification stored in the conditional access system identification storage means by the service descriptor analysis means of the message identification table reception means in a plurality of service descriptors, and is the same It is determined that message transmission is being performed when there is a conditional access method identification.
Then, when the message receiving apparatus determines that the message transmission is being performed by the conditional access method descriptor analyzing unit of the message identification table receiving unit, the message reception device uses the same identifier as the conditional access method identification to identify a plurality of limited reception methods. Search in the descriptor and extract the packet identifier associated with the same conditional access system identification.
Then, the message receiving device extracts, from the broadcast data, the packet data having the packet identifier extracted by the conditional access method descriptor analyzing unit as a message to the message receiving device.

The present invention has the following excellent effects.
According to the first and second aspects of the present invention, the message transmitting apparatus can assign the designated identifier managed by the broadcaster to the individual identifier stored in advance in the message receiving apparatus. As a result, the message receiving apparatus does not use an IC card distributed by the broadcaster as in the prior art, and the cost of the IC card can be reduced. Furthermore, the broadcaster does not need to manage the identifiers of all the message receiving devices in advance, and it is only necessary to sequentially assign the specified identifiers to the message receiving devices that have notified the individual identifiers. The cost to do can be reduced.

  Moreover, according to invention of Claim 1-2, a message receiver can be grouped by message control information. Furthermore, since message information can be delivered to each grouped message receiving device with message control information as a destination in a common message, compared to the case where an EMM individual message is transmitted to each message receiving device, Messages can be delivered efficiently.

  Furthermore, according to the first and second aspects of the present invention, it is possible to specify a group that can view a broadcast program using the message control information. As a result, the message receiving device can be grouped into a group that can view the broadcast program and a group that cannot view the broadcast program, and different message information can be distributed to each group using a common message. This allows the broadcaster to manage the number of message receivers that restrict viewing, so inquiries from viewers who want to subscribe to broadcast programs to the broadcaster are concentrated at the same time. Can be avoided.

  According to the first and second aspects of the present invention, the individual identifier can be displayed on the message receiving device by the markup language of the data broadcast transmitted from the broadcaster. As a result, the message receiving device can display the individual identifier in a unified display format described in a markup language such as BML text or ECMAScript without depending on the manufacturer of the receiving device. Notification content can be standardized.

It is a block diagram which shows the structure of the digital broadcasting system which concerns on 1st Embodiment. It is a sequence diagram which shows schematic operation | movement of the digital broadcasting system which concerns on 1st Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 1st Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 1st Embodiment. It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 1st Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on the modification of 1st Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on the modification of 1st Embodiment. It is a block diagram which shows the structure of the digital broadcasting system which concerns on 2nd Embodiment. It is a sequence diagram which shows schematic operation | movement of the digital broadcasting system which concerns on 2nd Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 2nd Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 2nd Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on the modification of 2nd Embodiment. It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 2nd Embodiment. It is a block diagram which shows the structure of the digital broadcasting system which concerns on 3rd Embodiment. It is a sequence diagram which shows schematic operation | movement of the digital broadcasting system which concerns on 3rd Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 3rd Embodiment. It is a block diagram which shows the structure of the identifier management apparatus which concerns on 3rd Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 3rd Embodiment. It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 3rd Embodiment. It is a block diagram which shows the structure of the digital broadcasting system which concerns on 4th Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 4th Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 4th Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on the modification of 4th Embodiment. It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 4th Embodiment. It is a figure which shows the example of a format of a message. It is a figure which shows the example of a format of the message information notification of a common message. It is a figure which shows the example of a format of a message. It is a figure which shows the data format example of an individual identifier. It is a figure which shows the example of a screen display of an individual identifier. It is a figure which shows the example of a format of an EMM common message. It is a figure which shows the example of a format of an EMM separate message. It is a figure which shows the example of a format of CAT, CA service descriptor, and a conditional access system descriptor.

<< First Embodiment >>
[Outline of digital broadcasting system]
First, referring to FIG. 1, an outline configuration of a digital broadcasting system (message delivery system) S _A according to the first embodiment.

The digital broadcasting system _{S A,} a plurality of broadcasters A, B, ... has a digital broadcast transmitting apparatus 1A (1), 1A (1 ), ... and the digital broadcast receiving apparatus 5A installed in the home or the like (5 ), 5A (5),... Is a system in which content (broadcast program) transmitted by digital broadcast from the digital broadcast transmission device 1A is received by the digital broadcast reception device 5A and viewed by the viewer. The broadcast wave W may be wireless or wired, such as terrestrial digital broadcast, satellite broadcast, and cable broadcast.

In the digital broadcasting system _{S A,} a digital broadcast receiving apparatus 5A, 5A, ... has previously unique identifier (individual identifier ID2 _[ID2 1, ID2 _2, ...]) to. Then, the digital broadcast receiving device 5A notifies the individual identifier ID2 to the digital broadcast transmitting device 1A, thereby transmitting individual message information addressed to the digital broadcast receiving device 5A via the broadcast wave W from the digital broadcast transmitting device 1A. Is possible. Also, the digital broadcasting system S _A, so that it can meet the demand individual digital broadcast receiving apparatus 5A, 5A, against ..., wants to send a message information at a time on a group of arbitrary units, individual digital The broadcast receiving devices 5A, 5A,... Can be grouped. The basic features are the same in the following embodiments.

  The digital broadcast transmission device 1A transmits content to the digital broadcast reception device 5A via the broadcast wave W. The digital broadcast transmitting apparatus 1A has a function of transmitting message information via the broadcast wave W to the individual digital broadcast receiving apparatus 5A with the individual identifier ID2 as a destination. Furthermore, the digital broadcast transmission device 1A has a function of grouping individual digital broadcast reception devices 5A and transmitting message information to a specific group.

The digital broadcast receiver 5A receives content via the broadcast wave W. An individual identifier ID2 is set in advance in the digital broadcast receiving apparatus 5A. By notifying and registering this individual identifier ID2 to the digital broadcast transmitting apparatus 1A, the digital broadcast receiving apparatus 5A acquires message information addressed to the individual identifier ID2 transmitted from the digital broadcast transmitting apparatus 1A via the broadcast wave W. It has the function to do.
Here, it is assumed that the individual identifier ID2 of the digital broadcast receiving device 5A is notified to the broadcaster by telephone or the like by the viewer and registered in the digital broadcast transmitting device 1A.

Next, an outline of the operation of the digital broadcast system according to the first embodiment will be described with reference to FIG.
First, the viewer notifies the broadcaster of the individual identifier ID2 displayed on the display screen of the digital broadcast receiver 5A by telephone, postcard, Internet, or the like (step SA1). Then, the broadcaster registers the individual identifier ID2 in the digital broadcast transmission device 1A. Then, in the subsequent operations, the digital broadcast transmission device 1A can identify the individual digital broadcast reception device 5A by the individual identifier ID2 and transmit an individual message (individual message).

  Also, when the broadcaster wants to manage the digital broadcast receiving device 5A by dividing it into a predetermined group, for example, when the digital broadcast receiving device 5A is to be grouped according to the presence / absence of a broadcast channel contract, viewing area, etc., the digital broadcast transmitting device 1A is an individual message whose destination is the individual identifier ID2, and transmits message control information for specifying the type of group to the digital broadcast receiving apparatus 5A (step SA2). The digital broadcast transmitting apparatus 1A includes message control information Mc as a destination and an identifier indicating a part of the individual identifier ID2 in a common message that is a message common to all the digital broadcast receiving apparatuses 5A. Among the digital broadcast receiving devices 5A grouped by the information Mc, a partial identifier Pid for sub-grouping the digital broadcast receiving device 5A to be processed with the message information Msg and a part (partial identifier) of the individual identifier ID2 Mask information Msk specifying the area is described, and message information is transmitted (step SA3). As a result, even for a common message, only the digital broadcast receiving device 5A grouped by the message control information Mc and further subgrouped by the partial identifier Pid and the mask information Msk receives the message information. Become.

  The digital broadcast transmitting apparatus 1A performs message display processing (step SA3) for displaying a message on the digital broadcast receiving apparatus 5A regardless of whether or not the identifier registration process (step SA1) and the grouping process (step SA2) are performed. ) Alone at any time. As a result, the digital broadcast receiving apparatus 5A that has never been subjected to the identifier registration process (step SA1) or the grouping process (step SA2) can be managed by the broadcaster and displayed. .

Thus, the digital broadcasting system S _A according to the first embodiment, the digital broadcast receiving apparatus 5A is in advance has a unique individual identifier ID2, to notify the broadcaster side, the broadcaster side, the conventional There is no need to individually distribute IC cards such as CAS cards or the like for each receiving apparatus, and it is not necessary to manage identifiers (card numbers) of IC cards.
Hereinafter is a detailed description of the construction and operation of the digital broadcast transmitting apparatus 1A and a digital broadcast receiving apparatus 5A in a digital broadcasting system S _A according to the first embodiment.

[Configuration of digital broadcasting transmitter]
First, the configuration of the digital broadcast transmitting apparatus according to the first embodiment will be described with reference to FIG. 3 (refer to FIG. 1 as appropriate). Here, the digital broadcast transmitting apparatus 1A includes an individual identifier registration unit 10, a message information storage unit 11, a message control information storage unit 12, a message control information individual update unit 13, an identifier storage unit 14, and a common message generation. Means 15, individual message generation means 16, data broadcast data storage means 17, data carousel encoding means 18, and broadcast transmission means 19 are provided. FIG. 3 illustrates only an identifier for identifying the digital broadcast receiving device 5A and a configuration related to message delivery using the identifier, and relates to a function of a general digital broadcast transmission device, for example, content delivery. The illustration of the configuration to be performed is omitted.

  The individual identifier registration means 10 inputs an individual identifier ID2 that is an identifier unique to the digital broadcast receiving apparatus 5A and the viewer's personal information PD, and registers them in the storage means (identifier storage means 14) as an identifier database. For example, the individual identifier registration means 10 inputs the individual identifier ID2 notified from the viewer by telephone, postcard, Internet, etc. and the personal information PD of the viewer, such as a keyboard, by the operator who operates the digital broadcast transmitting apparatus 1A. By being inputted by means (not shown), the individual identifier ID2 is written and stored (registered) in the identifier storage means 14 in association with the personal information PD. Here, the personal information PD is information for identifying the viewer (user), and is, for example, the name, address, telephone number, etc. of the viewer.

  Further, the individual identifier registration unit 10 outputs the input individual identifier ID2 to the message control information notification generation unit 161 of the individual message generation unit 16. The output to the message control information notification generation unit 161 is to deliver an individual message indicating that registration has been accepted to the digital broadcast receiving device 5A when the individual identifier ID2 is input.

  The message information storage unit 11 stores message information Msg to be transmitted to the digital broadcast receiving apparatus 5A, mask information Msk, and update time interval Ui, and is a general storage medium such as a hard disk. The message information Msg is data notified to the digital broadcast receiving device 5A in addition to the content, and the content is not particularly limited. For example, it is data such as text and mail displayed on the screen in a superimposed manner.

  The mask information Msk is data notified to the digital broadcast receiving device 5A in addition to the content, and specifies a part (partial identifier) of the individual identifier ID2. That is, the mask information Msk is information indicating the position of a bit that partially specifies the individual identifier ID2, and is, for example, “0xFF” when indicating the lower 1 byte. Note that when all the digital broadcast receiving devices 5A are to be subject to message display, the mask information Msk is set to “0x00”.

  The update time interval Ui is a value indicating a time interval at which the partial identifier Pid is updated by the message information notification generation unit 151 of the common message generation unit 15 described later.

  The message information Msg, the mask information Msk, and the update time interval Ui stored in the message information storage unit 11 are input via an input unit (not shown), and the message information notification of the common message generation unit 15 is received. It is read and used by the generation means 151. If the date and time when the message information Msg is transmitted in advance is determined by the broadcast program (content) or the like, the message information Msg is stored in association with the broadcast program distribution time.

Further, the message information storage unit 11 may further store the receiver type PK. Here, the receiver type PK will be described with reference to FIGS.
The receiver type PK indicates the type of the digital broadcast receiving device 5A. For example, as shown in FIG. 26B, “00: fixed TV (liquid crystal, PDP, etc.)”, “01: tuner only”, “02: Mobile TV”, “03: Cellular TV”, “04: PC TV (USB type, etc.)”, “05: Recording device”, “06-99: Undefined”, etc. are set. The receiver type PK may be a form in which a plurality of types are described. Further, this receiver type PK may be assigned a type for each bit as shown in FIG. Thus, the broadcaster can subdivide the digital broadcast receiving device 5A that receives a message (message information notification) according to the type of the digital broadcast receiving device 5A.

  The message control information storage unit 12 stores message control information Mc to be transmitted to the digital broadcast receiving device 5A, and is a general storage medium such as a hard disk. The message control information Mc is information stored in the digital broadcast receiving device 5A, and is information for controlling the acquisition, processing, and the like of the message information Msg with respect to the digital broadcast receiving device 5A. For example, this message control information Mc can control whether or not the digital broadcast receiving device 5A acquires the message information Msg.

  Specifically, as message control information Mc, a unique value is determined in advance depending on the presence / absence of a broadcast channel viewing contract, viewing area, and the like. For example, the message control information Mc is managed by 2-byte data “0x0000” to “0xFFFF”, and “0x0000” is “no broadcast channel contract” and “0x0001” is “broadcast channel contract”. By using such message control information Mc, when the broadcast channel is selected in the digital broadcast receiving apparatus 5A of “no broadcast channel contract”, a message indicating that the contract is not made is displayed as the message information Msg. The digital broadcast receiving device 5A can be grouped.

  The message control information Mc stored in the message control information storage unit 12 is input via an input unit (not shown), and is read and used by the message control information notification generation unit 161. The message control information storage means 12 stores a plurality of values as message control information Mc such as a value set by a broadcast channel viewing contract and a value set by a broadcast contract for each broadcast program (content). Can do.

  The message control information individual updating means 13 individually updates the message control information Mc stored in the digital broadcast receiving device 5A. Here, the message control information individual update means 13 inputs the individual identifier ID2 of the digital broadcast receiving apparatus 5A to be updated and new message control information Mc from the outside via an input means (not shown). Then, it instructs the individual message generating means 16 to generate an individual message for transmitting the message control information Mc to the digital broadcast receiving apparatus 5A.

  Thus, for example, when the viewing contract is canceled when the message control information Mc registered in a certain digital broadcast receiving device 5A is “broadcast channel contracted (0x0001)”, the message control information individual update is performed. The means 13 receives the individual identifier ID2 corresponding to the digital broadcast receiving device 5A and the message control information Mc (0x0000) indicating “no broadcast channel contract”, and thereby corresponds to the individual identifier ID2 by an individual message. The message control information Mc of the digital broadcast receiving apparatus 5A to be updated can be updated to “No broadcast channel contract (0x0000)”.

  The identifier storage unit 14 stores (registers) the individual identifier ID2 input by the individual identifier registration unit 10, and is a general storage medium such as a hard disk. This identifier storage means 14 is made into a database in association with the viewer's personal information PD for each individual identifier ID2. It is assumed that a predetermined initial value that is not recognized as an identifier is set in the database of the identifier storage unit 14 until the individual identifier ID2 is registered by the individual identifier registration unit 10.

  The common message generating unit 15 generates a message (common message) to be transmitted in common to the digital broadcast receiving device 5A. Here, the common message generation unit 15 includes a message information notification generation unit 151.

  The message information notification generating unit 151 generates a message for transmitting the message information Msg to the digital broadcast receiving device 5A as a common message. The common message generated by the message information notification generation unit 151 is output to the broadcast transmission unit 19.

  Here, the message information notification generation unit 151 generates a message (message information notification) having the message control information Mc, the partial identifier Pid, and the mask information Msk as destinations and the message information Msg as contents. In other words, the message information notification generating unit 151 holds the same message control information Mc, and the digital broadcast reception in which the value in a partial area of the individual identifier ID2 specified by the mask information Msk is the same as the partial identifier Pid. A common message is generated for the device 5A.

  Further, the message information notification generation unit 151 updates the partial identifier Pid every predetermined time according to the update time interval Ui stored in the message information storage unit 11. Here, the partial identifier Pid is updated by incrementing by one according to the update time interval Ui. Then, each time the partial identifier Pid is updated, the message information notification generation unit 151 sequentially generates messages including the updated partial identifier Pid as a destination. Thereby, the digital broadcast receiving device 5A that receives the common message can be switched.

  Note that the message information notification generation unit 151 receives the message control information Mc, the partial identifier Pid, the mask information Msk, and the message information Msg via the input unit (not shown). The message information Msg stored in the message information storage unit 11 and the message control information Mc stored in the message control information storage unit 12 are read out according to the time. An initial common message may be generated. The second and subsequent common messages are generated every time the message information notification generation unit 151 updates the partial identifier Pid as described above.

  The individual message generating unit 16 generates a message (individual message) to be individually transmitted to each digital broadcast receiving device 5A. Here, the individual message generating unit 16 includes a message control information notification generating unit 161.

  The message control information notification generating unit 161 generates a message for transmitting the message control information Mc to the digital broadcast receiving device 5A as an individual message. The individual message generated by the message control information notification generation unit 161 is output to the broadcast transmission unit 19.

  Here, the message control information notification generating unit 161 generates a message (message control information notification) having the individual identifier ID2 as the destination and the message control information Mc as the content. That is, the message control information notification generating unit 161 generates an individual message (message control information notification) for the digital broadcast receiving device 5A that holds the individual identifier ID2. By transmitting the message control information Mc to the digital broadcast receiving device 5A, the individual digital broadcast receiving devices 5A are grouped according to the value of the message control information.

  The message control information notification generation unit 161 may generate an individual message when the message control information Mc and the individual identifier ID2 are input via an input unit (not shown). A time table describing the delivery time and delivery destination of the message control information Mc may be stored in the information storage unit 12, and an individual message may be generated according to the time table.

  Here, the message control information notification generating unit 161 reads the predetermined message control information Mc from the message control information storage unit 12 when the individual identifier ID2 is input from the individual identifier registration unit 10, and the individual message Will be generated. For example, the message control information notification generating unit 161 receives a value (“broadcast channel contract exists (0x0001)”) indicating that a broadcast channel viewing contract has been made at the stage when the individual identifier ID2 is input as the message control information storage unit. 12 and read out an individual message.

Further, when the message control information notification generating unit 161 receives a notification from the message control information individual updating unit 13 to transmit new message control information Mc to the digital broadcast receiving device 5A indicated by the individual identifier ID2, An individual message is generated using the input individual identifier ID2 and message control information Mc. As a result, new message control information Mc is registered in the digital broadcast receiving apparatus 5A.
Although not shown here, the individual message generation unit 16 may include individual message information notification generation unit that generates an individual message for transmitting the message information Msg to the individual identifier ID2.

  Here, referring to FIGS. 25, 26, 30, and 31 (refer to FIG. 3 as appropriate), the message information notification generating unit 151 of the common message generating unit 15 and the message control information notification generating unit 161 of the individual message generating unit 16 generate them. The format of each message will be described.

  As shown in FIG. 25A, the message information notification generation unit 151 sets the message destination to “message control information (Mc)”, “partial identifier (Pid)”, “mask information (Msk)”, and The content is “message information (Msg)”, and a message information notification that is a common message is generated.

Further, the message information notification generation unit 151 receives the message information Msg by the receiver type PK in addition to the message information Msg, the partial identifier Pid, and the mask information Msk as shown in FIG. The digital broadcast receiving device 5A to be used may be classified. The receiver type PK indicates the type of the digital broadcast receiving device 5A. For example, as shown in FIG. 26B, “00: fixed television (liquid crystal, PDP, etc.)”, “01: tuner only” , “02: mobile TV”, “03: mobile phone TV”, “04: personal computer TV (USB type, etc.)”, “05: recording device”, “06-99: undefined”, and the like.
Further, this receiver type PK may be assigned a type for each bit as shown in FIG. Thereby, a plurality of types can be specified at a time.
The receiver type PK may be input from the outside when generating the message information notification, or may be associated with the message information in the message information storage unit 11 in advance.

The format of such message information notification is standardized by STD-B25 of the Japan Radio Industry Association (ARIB) when the stream data distributed on the broadcast wave W is MPEG-2 TS (transport stream). A data format of an EMM (Entitlement Management Message) common message may be used.
That is, as shown in FIG. 30, the message information notification generation unit 151 describes the message control information Mc in the area R1 in the EMM message section header of the EMM common message section structure, and the area R2 of the fixed part of the EMM message body. A partial identifier Pid is described, mask information Msk is described in the fixed part region R3 of the EMM message body, and message information Msg is described in the message code body region R4 of the EMM message body, thereby generating a common message. .

  As shown in FIG. 25B, the message control information notification generating unit 161 sets the message destination as “individual identifier (ID2)” and the message content as “message control information (Mc)”. Generate a control information notification.

The format of this message control information notification may be the data format of the EMM individual message standardized by STD-B25.
That is, the message control information notification generating unit 161 describes the individual identifier ID2 in the identifier information area R5 of the EMM message body (1, 2,..., N) of the EMM individual message section structure as shown in FIG. An individual message is generated by describing the message control information Mc in the message code area R6 of the EMM message body (1, 2,..., N).
Returning to FIG. 3, the description of the configuration of the digital broadcast transmitting apparatus 1A will be continued.

  The data broadcast data storage means 17 stores BML (Broadcast Markup Language) data Dt, which is data broadcast data transmitted to the digital broadcast receiver 5A, and is a general storage medium such as a hard disk. The BML data Dt is data broadcast content (program code) used in the data broadcast encoding method defined by STD-B24 of the radio wave industry (ARIB), and is BML text and script data. It is composed of ECMAScript data.

Here, the BML data Dt includes an instruction (procedure) for reading the individual identifier ID2 stored in the storage unit 54 of the digital broadcast receiving apparatus 5A and displaying it on the screen in addition to the data for normal data broadcasting. The described program is added.
The program for displaying the individual identifier ID2 can be uniquely determined by the broadcaster regarding the display format, such as displaying the individual identifier ID2 in hexadecimal notation or in decimal notation. .

  The BML data Dt may be a program that refers to the message control information Mc stored in the storage unit 54 of the digital broadcast receiving device 5A and switches the screen displayed in the data broadcast. Thus, for example, when the message control information Mc stored in the storage means 54 is “No broadcast channel contract (0x0000)”, “Channel is not contracted” or the like on the data broadcast screen. Can be displayed.

  The data carousel encoding means 18 encodes BML data Dt (BML text, ECMAScript data) into section data (packet data) that can be transmitted by carousel transmission that is repeated transmission in a broadcast wave.

  Specifically, the data carousel encoding means 18 generates the BML data Dt as a packet of a DSM-CC (Digital Storage Media Command and Control) data carousel defined by ARIB STD-B24. That is, the data carousel encoding means 18 sections the BML data Dt into DDB (Download Data Block) divided into blocks and DII (Download Info Indication) indicating the data structure.

  The broadcast transmission means 19 uses the common message generated by the common message generation means 15, the individual message generated by the individual message generation means 16, and the DII and DDB generated by the data carousel encoding means 18 as stream data. As described above, the signal is transmitted to the digital broadcast receiver 5A by the broadcast wave W via a transmission antenna (not shown). For example, the broadcast transmission means 19 multiplexes and transmits each message, DII and DDB using an MPEG-2 TS (transport stream) system. In addition to the common message, individual message, DII and DDB, the broadcast transmission means 19 is similar to a general digital broadcast transmission apparatus, and includes content (broadcast program), program specific information (PSI: Program Specific Information), program A stream in which sequence information (SI: Service Information) and the like are multiplexed is generated and transmitted to the digital broadcast receiving apparatus 5A.

In this way, the digital broadcast transmitting apparatus 1A does not need to manage a unique identifier for each receiving apparatus in advance in the broadcaster like the card number of the conventional CAS card.
In addition, the digital broadcast receiving device 5A can be grouped by the message control information Mc, for example, depending on the presence / absence of a broadcast channel contract. Further, of the partial identifier Pid and the mask information Msk, the digital broadcast receiving device 5A for displaying a message is sub-grouped among the receiving device groups grouped as “no broadcast channel contract” in the message control information Mc. As a result, the viewer of the digital broadcast receiving device 5A who has not subscribed to the broadcast channel can also temporarily watch the broadcast program. At this time, by updating the partial identifier Pid, the digital broadcast receiving device 5A for displaying a message can be switched in units of subgroups. This allows the broadcaster to manage the number of digital broadcast receivers 5A that restrict viewing, so that inquiries from viewers who wish to subscribe to broadcast programs are not concentrated at the same time. can do.
The digital broadcast transmitting apparatus 1A can be operated by a program (message transmission program) that causes a general computer to function as each of the above-described means.

[Configuration of digital broadcast receiver]
Next, the configuration of the digital broadcast receiving apparatus according to the first embodiment will be described with reference to FIG. 4 (refer to FIG. 1 as appropriate). Here, the digital broadcast receiving apparatus 5A includes a broadcast receiving means 50, a common message processing means 51, an individual message processing means 52, a data carousel decoding means 53, a storage means 54, a display means 55, and an initialization means. 56. FIG. 4 illustrates only an identifier for identifying the digital broadcast receiving device 5A and a configuration related to message delivery using the identifier, and relates to a function of a general digital broadcast receiving device, for example, content reception. The illustration of the configuration to be performed is omitted.

  The broadcast receiving means 50 receives stream data transmitted by the broadcast wave W via a receiving antenna (not shown). The broadcast receiving unit 50 separates the common message, the individual message, and DII and DDB from the stream data transmitted from the digital broadcast transmitting apparatus 1A. The separated common message is output to the common message processing unit 51, the individual message is output to the individual message processing unit 52, and DII and DDB are output to the data carousel decoding unit 53.

  In addition to the common message and individual message, content (broadcast program), program identification information (PSI), program arrangement information (SI), etc. are multiplexed in the stream data. By separating them, the program guide is displayed and the content is reproduced by general program guide display means (not shown), content reproduction means (not shown), and the like.

  The common message processing means (common message receiving means) 51 analyzes a common message that is a message common to the digital broadcast receiving apparatus 5A received via the broadcast receiving means 50, and performs processing according to the message. Here, the common message processing unit 51 includes a message information notification analysis unit 511.

The message information notification analysis unit 511 analyzes whether or not the message information notification (see FIG. 25A) transmitted as a common message is a message addressed to the group including the digital broadcast receiving device 5A. If the message information belongs to the message information, the message information notified by the message information notification is processed.
Specifically, the message information notification analysis unit 511 matches the message control information Mc that is the destination of the message information notification (see FIG. 25A) with the message control information Mc stored in the storage unit 54, In addition, when the result of logical product (AND) of the individual identifier ID2 stored in the storage means 54 and the mask information Msk that is the destination of the message information notification matches the partial identifier Pid, the message information notification Is output to the message display means 552. The message information notification analysis unit 511 outputs the message information Msg to the message display unit 552 unconditionally when the mask information Msk is “0x00”.

For example, in the message information notification analysis unit 511, the message control information Mc stored in the storage unit 54 is “No broadcast channel contract (0x0000)”, and the individual identifier ID2 stored in the storage unit 54 is “0x12345”. ", The message control information Mc value is" 0x0000 "as the destination, the partial identifier Pid value is" 0x45 ", and the mask information Msk is" 0xFF ". Is output to the message display means 552. As a result, in a receiving device group that is not subscribed to a broadcast channel, message information notified by the message information notification, for example, a message such as “This channel is not subscribed” can be displayed on the display screen. . At this time, even if the message control information Mc “no broadcast channel contract (0x0000)” stored in the storage means 54 matches the message control information Mc that is the destination of the message information notification, the storage means If the result of logical product (AND) of the individual identifier ID2 stored in 54 and the mask information Msk that is the destination of the message information notification does not match the partial identifier Pid, the message is displayed on the display screen. The viewer can view the broadcast program without displaying it. That is, even in a receiving device group that is not subscribed to a broadcast channel, the viewer can temporarily watch the broadcast program.
On the other hand, in the receiving device group with which the broadcast channel is contracted, the result of logical AND (AND) operation between the individual identifier ID2 and the mask information Msk that is the destination of the message information notification matches the partial identifier Pid. The viewer can view the broadcast program without determining whether or not the message is displayed on the display screen.

  When the format of the message information notification transmitted as the common message is the format described with reference to FIG. 26A, the message information notification analysis unit 511 stores the message in which the message control information Mc is stored in the storage unit 54. Whether or not it matches the control information Mc and the result of logical product (AND) operation between the individual identifier ID2 stored in the storage means 54 and the mask information Msk that is the destination of the message information notification is the partial identifier It is determined whether or not it matches the Pid, and further, it is determined whether or not the receiver type PK matches the type of the digital broadcast receiving apparatus 5A. Is output to the message display means 552. However, it is assumed that the type of the digital broadcast receiving device 5A is stored in the storage unit 54 in advance.

  The individual message processing means (individual message receiving means) 52 analyzes an individual message that is an individual message for each digital broadcast receiving apparatus 5A received via the broadcast receiving means 50, and performs processing according to the message. . Here, the individual message processing means 52 includes message control information notification analysis means 521.

  The message control information notification analyzing unit 521 analyzes whether or not the message control information notification (see FIG. 25B) transmitted as an individual message is a message addressed to the digital broadcast receiving device 5A. When the message is addressed to the receiving device 5A, the message control information notified by the message control information notification is processed.

Specifically, the message control information notification analysis unit 521 determines that the individual identifier ID2 that is the destination of the message control information notification (see FIG. 25B) matches the individual identifier ID2 stored in the storage unit 54. In addition, the message control information Mc, which is the content of the message control information notification, is written in the storage means 54.
For example, the message control information notification analyzing unit 521 has the same individual identifier as the individual identifier stored in the storage unit 54 for the destination of the individual message, and the message control information that is the content of the individual message is “There is a broadcast channel contract. If (0x0001) ", the value" 0x0001 "is written in the message control information Mc of the storage means 54.

  The storage means 54 stores information unique to the digital broadcast receiving device 5A, and is a general storage medium such as a nonvolatile memory (NVRAM: Non Volatile Random Access Memory). This storage means 54 stores at least message control information Mc, individual identifier ID2, and receiver information Ti. Here, personal information PD that is information for specifying the viewer is also stored.

  The receiver information Ti is unique information such as the manufacturer and model of the digital broadcast receiving device 5A. For example, the receiver information Ti is data in which character codes such as manufacturer names and model names (model numbers) are digitized. In addition, here, the receiver information Ti includes the receiver type PK shown in FIGS. The receiver information Ti is registered in advance by the manufacturer of the digital broadcast receiving apparatus 5A.

  The message control information Mc is information for controlling whether or not to perform message processing for a common message, and is information that serves as a destination (group destination) for message information notification (see FIG. 25A). For example, it is 2-byte data “0x0000” to “0xFFFF”, and a predetermined initial value is set.

Further, for example, when “0x0000” is “no broadcast channel contract” and “0x0001” is “broadcast channel contract” as message control information Mc, “0x0000” is set as an initial value in message control information Mc. Set it.
As a result, content viewing can be restricted in the digital broadcast receiving device 5A that has not completed registration processing.

  The message control information Mc is information managed and held for each broadcaster. Specifically, each broadcaster is identified with a unique value by the entity identification of the EMM individual message shown in FIG. As a result, the storage means 54 stores a plurality of message control information Mc for each broadcaster. Further, a plurality of message control information Mc may exist for each broadcast channel. For example, the message control information Mc can be set for each broadcast channel by defining a predetermined area of the 2-byte data of the message control information Mc as a value specific to the broadcast channel.

  The individual identifier ID2 is an identifier for individually identifying the digital broadcast receiving device 5A. It is assumed that a unique value is set in advance for this individual identifier ID2. For example, an individual number or checksum that is a combination of a manufacturer-specific value of the receiving apparatus and a manufacturing number (management number) uniquely assigned by the manufacturer. It is assumed that the value of (CRC) is set.

As shown in FIG. 28A, the individual identifier ID2 may be added with a receiver type PK in addition to the individual number PN and the checksum CRC. The receiver type PK indicates the type of the digital broadcast receiving device 5A. For example, as shown in FIG. 28B, “00: fixed television (liquid crystal, PDP, etc.)”, “01: tuner only” , “02: mobile TV”, “03: mobile phone TV”, “04: personal computer TV (USB type etc.)”, “05: recording device”, “06-99: undefined”, etc. . The receiver type PK may be a form in which a plurality of types are described. Further, this receiver type PK may be assigned a type for each bit as shown in FIG.
Thereby, the broadcaster side can grasp the ratio of the type of the digital broadcast receiving device 5A that has received registration in the digital broadcast transmitting device 1A.

  The personal information PD is information for identifying the viewer, and is, for example, the viewer's name, address, telephone number, or the like. This personal information PD is information input by input means (not shown) such as a remote control device at the time of initial setting. In the first embodiment, it is not always necessary to store the personal information PD in the storage means 54. However, in a general digital broadcast receiver, for example, the contents of the channel and data broadcast are switched depending on the viewing area, etc. In this case, the personal information PD is stored in the storage unit 54.

  The data carousel decoding means 53 decodes the section data (DII, DDB) received via the broadcast receiving means 50. The decrypted data is output to the display means 55 as BML data (BML text, ECMAScript data).

  The display means 55 displays display data on a display device (not shown) such as a liquid crystal display. Here, the display unit 55 includes an individual identifier display unit 551, a message display unit 552, and a BML decoding unit (markup language decoding unit) 553.

The individual identifier display unit 551 displays the individual identifier ID2 stored in the storage unit 54 as display data. The individual identifier display unit 551 reads out the individual identifier ID2 from the storage unit 54 when instructed to display the initial setting screen by an input unit (not shown) such as a remote control device, for example. In the predetermined area, the value of the individual identifier ID2 is displayed as text data (a character string expressed by decimal numbers).
The individual identifier ID2 displayed on this screen is notified to the broadcaster together with personal information such as name by the viewer by telephone, postcard, Internet, or the like.

The message display means 552 displays the message information notified from the message information notification analysis means 511 as display data. When text data is input as message information, the message display means 552 displays the text data on the screen of the display device. Further, when a predetermined message number is input as message information, the message display unit 552 reads and displays text data (not shown) corresponding to the message number stored in the storage unit 54 in advance. It is good.
For example, the message display unit 552 displays a message such as “This channel is not contracted” on the display screen as a message input from the message information notification analysis unit 511.

  The BML decoding unit 553 visualizes (renders) the BML data that is the content of the data broadcast decoded by the data carousel decoding unit 53. That is, the BML decrypting unit 553 is a browser that analyzes BML text and ECMAScript data, which are BML data, and displays them on the screen.

Note that the BML decoding unit 553 reads the individual identifier ID2 from the storage unit 54 and displays it on the screen when an instruction (procedure) for displaying the individual identifier ID2 is described in the BML data. At this time, if the BML data is a program that displays the individual identifier ID2 in hexadecimal, the individual identifier ID2 is displayed in hexadecimal on the screen, and if it is a program that displays decimal, the individual identifier is displayed in decimal on the screen. ID2 is displayed.
As a result, the screen display form of the individual identifier ID2 is shared by all digital broadcast receiving apparatuses by data broadcasting.

  Whether the individual identifier ID2 is displayed by the BML decoding unit 553 from the data broadcasting screen or the individual identifier ID2 is displayed by the individual identifier display unit 551 from the setting screen unique to the receiving apparatus is freely determined by the viewer. It is a choice and either one can be used. For example, when the broadcaster inquires the viewer about the individual identifier ID2, it can be said that it is preferable that the viewer selects the display based on the data broadcast in which the display form is shared by all the digital broadcast receiving apparatuses.

When the BML data is a program in which an operation for switching the screen to be displayed is described according to the value of the message control information Mc, the BML decoding unit 553 refers to the value of the message control information Mc in the storage unit 54 and Switch.
Thereby, the broadcaster can change the data broadcast presentation content in the digital broadcast receiving device 5A according to the contract content of the viewer.

  The display means 55 is a program guide display means for generating and displaying an electronic program guide from program identification information (PSI), program arrangement information (SI), etc., a content reproduction means for reproducing content (broadcast program), and the like. Although the configuration of a general digital broadcast receiving apparatus is provided, the illustration is omitted here.

The initialization unit 56 initializes the message control information Mc stored in the storage unit 54. The initialization unit 56 receives the message control information Mc stored in the storage unit 54 by receiving an initialization instruction from an input unit (not shown) such as a switch or an initialization instruction on the initial setting screen. Is set to the initial value.
For example, when “0x0000” is “no broadcast channel contract” and “0x0001” is “broadcast channel contract” as the message control information Mc, the initialization unit 56 sets the message control information Mc to an initial value “ Set to 0x0000 ". Thereby, even when the owner of the digital broadcast receiving device 5A changes, the digital broadcast receiving device 5A can be reset to the initial state.

In this way, the digital broadcast receiving device 5A receives a message unique to the digital broadcast receiving device 5A when the viewer notifies the broadcaster of the value of the individual identifier stored in the digital broadcast receiving device 5A in advance. It becomes possible to do. Further, a conventional IC card such as a CAS card for each receiving apparatus is not required, and the cost can be reduced.
The digital broadcast receiving apparatus 5A can be operated by a program (message receiving program) that causes a general computer to function as each of the means described above.

[Operation of digital broadcasting system]
Next, (for configuration, appropriately diagram 3,4 see) Referring to FIG. 5 to be described the operation of the digital broadcasting system S _A according to the first embodiment.

(Identifier registration operation)
First, in the initial setting, the digital broadcast receiving device 5A reads the individual identifier ID2 stored in the storage unit 54 by the individual identifier display unit 551 of the display unit 55 and displays it on the screen (step S10).
The screen at this time is a setting screen of the digital broadcast receiving apparatus 5A or a data broadcast screen.

Hereinafter, an operation for displaying the individual identifier ID2 on the data broadcasting screen will be described.
The digital broadcast transmitting apparatus 1A transmits BML data Dt for displaying the individual identifier ID2 and the like as a data broadcast by the data carousel encoding means 18 before step S10. Then, the digital broadcast receiving apparatus 5A transmits BML data Dt for displaying the individual identifier ID2 and the like as the data broadcast by the data carousel encoding means 18. Then, the digital broadcast receiving apparatus 5A decodes data (DII, DDB) transmitted by carousel transmission into BML data Dt by the data carousel decoding means 53, and obtains the individual identifier ID2 from the storage means 54 by the BML decoding means 553. Read out and display on the screen (step S10). The viewer can transition to the data broadcast screen by switching to the data broadcast screen by operating the d button on the remote controller (not shown).
Then, the viewer notifies the broadcaster of the value of the individual identifier ID2 displayed on the screen together with personal information PD such as a name by telephone, postcard, Internet, or the like (step S11).

  Then, the broadcaster acquires the individual identifier ID2 unique to the digital broadcast receiving device 5A and the personal information PD (step S12). Here, the operator of the broadcaster inputs the value of the individual identifier ID2 notified from the viewer by the input means (not shown) in the digital broadcast receiver 5A together with the personal information PD (step S13). Then, the digital broadcast transmitting apparatus 1A uses the individual identifier registration unit 10 to register the value of the individual identifier ID2 input in step S13 in the identifier database of the identifier storage unit 14 in association with the personal information PD (step S14). Through the operations from step S10 to step S14, an identifier (individual identifier ID2) unique to the digital broadcast receiver 5A is registered in the digital broadcast transmitter 1A.

(Grouping process)
Then, the digital broadcast transmitting apparatus 1A uses the message control information notification generating unit 161 of the individual message generating unit 16 to specify the individual message (message control information) having the individual identifier ID2 input in step S13 as the destination and the message control information Mc as the content. Notification) is generated (step S15). For example, here, the message control information Mc of the message control information notification is “broadcast channel contracted (0x0001)”.
Then, the digital broadcast transmitting apparatus 1A transmits the individual message (message control information notification) generated in step S15 by the broadcast transmitting means 19 to the digital broadcast receiving apparatus 5A via the broadcast wave W (step S16). .

On the other hand, the digital broadcast receiving device 5A receives the individual message via the broadcast wave W by the broadcast receiving means 50 (step S17). Then, the digital broadcast receiving device 5A determines whether the message control information notification of the individual message received in step S17 by the message control information notification analyzing unit 521 of the individual message processing unit 52 is a message addressed to the digital broadcast receiving device 5A. If the message is addressed to the digital broadcast receiving apparatus 5A, the message control information Mc notified by the message control information notification is written and stored in the storage means 54 (step S18).
As a result, “with broadcast channel contract (0x0001)” is written as message control information Mc in the storage means 54 of the digital broadcast receiving apparatus 5A.

(Message display processing)
Thereafter, the digital broadcast transmitting apparatus 1A generates a common message for notifying message information by the message information notification generating unit 151 of the common message generating unit 15 (step S19). For example, here, the message information notification generating unit 151 is an identifier indicating a part of the message control information “no broadcast channel contract (0x0000)” and the individual identifier ID2, and is grouped by the message control information Mc. Of the digital broadcast receiving device 5A, the partial identifier (0x00) for subgrouping the digital broadcast receiving device 5A to be processed with the message information Msg, and the mask information (0xFF) for specifying a partial area in the individual identifier ID2 And a common message (message information notification) having the message information “This channel is not subscribed” as a destination.
At this time, the digital broadcast transmission device 1A uses the message information notification generation unit 151 of the common message generation unit 15 to switch the digital broadcast reception device 5A that receives the message information notification, and to display the partial identifier Pid as the message information storage unit. 11 is updated by incrementing by one according to the update time interval Ui stored in 11, and each time it is updated, a common message including the updated partial identifier Pid as a destination is sequentially generated.
Further, when all the digital broadcast receiving devices 5A are to be processed with the message information Msg, the digital broadcast transmitting device 1A sets the mask information Msk to “mask information Msk” by the message information notification generating unit 151 of the common message generating unit 15. It is assumed that 0x00 ".
Then, the digital broadcast transmitting apparatus 1A transmits the common message (message information notification) generated in step S19 by the broadcast transmitting means 19 to the digital broadcast receiving apparatus 5A via the broadcast wave W (step S20).

  On the other hand, the digital broadcast receiving device 5A receives the common message via the broadcast wave W by the broadcast receiving means 50 (step S21). Then, the digital broadcast receiving device 5A uses the message control information Mc stored in the storage unit 54 to store the message information notification destination of the common message received in step S21 by the message information notification analysis unit 511 of the common message processing unit 51. The result of logical AND operation (AND) between whether or not the ID matches and the individual identifier ID2 stored in the storage means 54 and the mask information Msk that is the destination of the message information notification matches the partial identifier Pid. It is analyzed whether or not the common message is a message addressed to the digital broadcast receiving apparatus 5A.

Then, when the common message received in step S21 is a message addressed to the digital broadcast receiving apparatus 5A, the digital broadcast receiving apparatus 5A processes the message information Msg notified by the message information notification (step S22).
For example, when the message control information Mc stored in the storage means 54 is “No broadcast channel contract (0x0000)” and the individual identifier ID2 is “0x12345”, the message control information Mc that is the destination of the common message is “ No broadcast channel contract (0x0000) ”, partial identifier Pid is“ 0x45 ”, mask information Msk is“ 0xFF ”indicating“ lower 1 byte of individual identifier ID2, ”message information Msg that is the content of the common message is“ this channel is When the message information notification “Not contracted” is received, the digital broadcast receiving device 5A displays “This channel is not contracted” on the screen by the message display means 552. When the format of the message information notification transmitted as the common message is the format described in FIG. 26A, the digital broadcast receiving device 5A further sets the receiver type PK by the message information notification analyzing unit 511. It is determined whether or not the type of the digital broadcast receiving device 5A stored in the storage unit 54 matches, and only when both match, the message display unit 552 displays a message on the screen.

  On the other hand, if the message control information Mc stored in the storage means 54 is “broadcast channel contracted (0x0001)”, the individual identifier ID2 and the mask information Msk that is the destination of the message information notification are ANDed. Without determining whether the result of (AND) matches the partial identifier Pid and whether the receiver type PK matches the type of the digital broadcast receiving apparatus 5A stored in the storage unit 54. The message display means 552 ends the operation without displaying “This channel is not subscribed” on the screen. When only the message display process is performed in the digital broadcast system, the process starts from step S19 in the operation of the digital broadcast system.

  In this way, the digital broadcast receiving device 5A is grouped (here, grouped according to the presence / absence of a contract) based on the message control information Mc. Further, the digital broadcast receiving device 5A for displaying a message among the digital broadcast receiving devices 5A grouped by the message control information Mc is sub-grouped by the partial identifier Pid and the mask information Msk.

<< Modification of First Embodiment >>
Next, a modification of the first embodiment will be described. In the digital broadcast transmitting apparatus 1A of FIG. 3, one message (individual message, common message) is transmitted to the digital broadcast receiving apparatus 5A (FIG. 4).

In this modified example, a function of distributing a plurality of messages at the same time and switching and receiving the messages on the receiving device side is added. Here, the plurality of message information are different messages for each type of conditional access system on the receiving device side, for example.
Note that the system configuration of this modification, the digital broadcasting system S digital broadcast transmitting apparatus 1A and a digital broadcast receiving apparatus 5A of _A, described later respectively digital broadcast transmission apparatus 1A 2 _(FIG. 6) shown in FIG. 1 and the digital broadcast The configuration is replaced with the receiving device 5A ₂ (FIG. 7).

[Configuration of digital broadcasting transmitter]
First, the configuration of a digital broadcast transmission apparatus according to a modification of the first embodiment will be described with reference to FIG. Here, the digital broadcast transmission apparatus 1A ₂ includes a plurality of configurations (message generation means 70) for generating a common message and individual messages in the digital broadcast transmission apparatus 1A described with reference to FIG. 70 is configured to include CAT generation means 71 for adding information for identifying message information generated by 70.

The message generation means 70 has a plurality of configurations (70 ₁ ,..., 70 _n ) for generating common messages and individual messages. The number of message generators 70 is not particularly limited, but it is sufficient that the number of messages to be transmitted is at least the same.
In FIG. 6, only an identifier for identifying the digital broadcast receiving device 5A ₂ (FIG. 7) and a configuration related to message distribution using the identifier are illustrated, and functions of a general digital broadcast transmitting device, for example, The configuration related to content distribution other than data broadcasting is not shown.

  The message generating means 70 is configured to generate a message so that a plurality of messages can be generated at one time (here, the individual identifier registering means 10, the message information storing means 11, the message control information storing means 12, the message A plurality of control information individual update means 13, identifier storage means 14, common message generation means 15, and individual message generation means 16) are provided.

Each means constituting the message generating means 70 is basically the same as the structure of the digital broadcast transmitting apparatus 1A already described with reference to FIG. However, the common message generating means 15A (15) or individual message generating means 16A (16) via an input means (not shown) from the outside, the message generating means ₇₀ 1, ..., a message is 70 _n generates ( The packet identification (PID) of TS (transport stream), which is information for identifying the (EMM message), is input and notified to the broadcast transmission means 19A (19).

The broadcast transmission means 19A (19) is basically the same as the digital broadcast transmission apparatus 1A described with reference to FIG. Multiplex and transmit. Further, the broadcast transmission unit 19A transmits a message (EMM message) generated by each message generation unit 70 ₁ ,..., 70 _n as TS packet data to which the notified PID is added.

The CAT generation means (message identification table generation means) 71 generates a table describing information for identifying a message.
This CAT generation means 71 is a reception method identification that is an identifier stored in advance on the receiving apparatus side for receiving a limited message from a plurality of messages, and a packet for transmitting a common message and an individual message. A plurality of packet identifiers that are identifiers are input from the outside, and for each conditional access system identification, a CA service descriptor (service descriptor) indicating that message transmission is performed including the conditional access system identification, and conditional access A message identification table including a plurality of conditional access system descriptors in which system identifications and packet identifiers are associated with each other is generated.

This message identification table can be in the CAT (Conditional Access Table) data format standardized by ARIB STD-B10.
As shown in FIG. 32A, the CAT generated by the CAT generation unit 71 includes a section header including a table identification for identifying the table, a descriptor area in which various descriptors are arranged, a CRC ( Checksum).
In this descriptor area, a plurality of CA service descriptors generated by the CA service descriptor generation unit 711, which will be described later, and conditional access method descriptors generated by the conditional access method descriptor generation unit 712 are arranged. .

  Here, the CAT generation unit 71 includes a plurality of CA service descriptor generation units 711 and conditional access system descriptor generation units 712, respectively. The number of the means (711, 712) is not particularly limited, but at least the number of messages to be transmitted at the same time is sufficient.

  The CA service descriptor generation means 711 generates a descriptor describing information for specifying a business entity that is delivering a message (message service). Here, the CA service descriptor generation unit 711 generates a CA service descriptor to be arranged in the CAT shown in FIG.

As shown in FIG. 32 (b), this CA service descriptor includes a descriptor tag, a descriptor length, a conditional access system identification, an entity identification, a message control, and an extended area. Consists of data.
“Business entity identification” is a unique code for identifying the business entity that implements the message service. This code is assumed to be known information in advance in each CA service descriptor generation means 711 ₁ ,..., 711 _n .
“Limited reception method identification” is an identifier (CA System id) for identifying the type of the limited reception method on the receiving device side. This identifier is input from the outside via an input means (not shown).
The contents of the other CA service descriptors are the same as the contents of general CA service identifiers, and thus the description thereof is omitted.

  As described above, the CA service descriptor generating unit 711 generates the CA service descriptor as shown in FIG. 32B, and the message service is implemented in the business entity on the receiving device side. Can be recognized. Further, the CA service descriptor generating unit 711 sets the conditional access method identifier (CA System id) in the CA service identifier, thereby generating the conditional access method descriptor generated by the conditional access method descriptor generating unit 712 to be described later. Can be associated.

  The conditional access method descriptor generating means 712 generates a descriptor describing information for identifying a message to be received by the receiving apparatus among a plurality of messages. Here, the conditional access system descriptor generating means 712 generates the conditional access system descriptor to be placed in the CAT shown in FIG.

This conditional access system descriptor, as shown in FIG. 32 (c), is composed of data having descriptor tag, descriptor length, conditional access system identification, conditional access PID, and extension area as items. Is done.
“Limited reception method identification” is the same identifier (CA System id) as the conditional access method identification described in FIG. This identifier is input from the outside via an input means (not shown). With this identifier, the conditional access system descriptor and the CA service identifier are associated with each other.
The “restricted reception PID” is an identifier for identifying and receiving a message on the receiving device side. Specifically, the limited reception PID is a packet identifier (PID) when the EMM generated by the common message generation unit 15 or the individual message generation unit 16 is distributed by MPEG-2 TS. This identifier is input from the outside via an input means (not shown). With this identifier, the receiving device side can identify which PID is used to receive the EMM.

Thus, the CAT generation means 71 generates a CAT including a plurality of CA service descriptors and conditional access system descriptors, and outputs the generated CAT to the broadcast transmission means 19A (19).
As a result, the digital broadcast transmitting apparatus 1A ₂ can simultaneously transmit a plurality of different messages with different PIDs.

[Configuration of digital broadcast receiver]
Next, with reference to FIG. 7, a configuration of a digital broadcast receiving apparatus according to a modification of the first embodiment will be described. Here, the digital broadcast receiving apparatus 5A ₂ includes a broadcast receiving unit 50A (50), and a common message processor 51, the individual message processing unit 52, a storage unit 53, a display unit 54, an initialization unit 55, Storage means 62 and CAT processing means 63 are provided. In FIG. 7, it illustrates only the structure associated with the message delivery using an identifier and the identifier for identifying the digital broadcast receiver 5A _2, the general functions of the digital broadcast receiving apparatus, for example, other than the data broadcasting The configuration related to the content reception is not shown.

  Here, the configuration other than the broadcast receiving unit 50A, the storage unit 62, and the CAT processing unit 63 is the same as the configuration of the digital broadcast receiving device 5A described with reference to FIG. To do.

The broadcast receiving means 50A is basically the same as the broadcast receiving means 50 described with reference to FIG. 4, but differs in the following functions.
The broadcast receiving unit 50A extracts CAT from the stream data transmitted from the digital broadcast transmitting device 1A ₂ (see FIG. 6), and outputs the extracted CAT to the CAT processing unit 63. The broadcast receiving means 50A can extract the CAT from the stream data by searching for the PID of the TS predetermined for the CAT.

  Also, the broadcast receiving unit 50A separates and extracts the common message and the individual message corresponding to the PID from the received stream data based on the EMM PID notified from the CAT processing unit 63 described later. The extracted common message is output to the common message processing unit 51, and the individual message is output to the individual message processing unit 52.

Storing means (limited access system identification memory means) 62, a message (common message, individual message) used for storing an identifier for identifying whether the message to the digital broadcast receiving apparatus 5A ₂ A general storage medium such as a ROM. The storage unit 62 stores the identifier in advance. Note that here, a conditional access system identification (CA System id), which is an identifier for identifying the type of the conditional access system, is used as the identifier.

CAT processing unit (message identification table receiving means) 63 analyzes the CAT, and acquires the packet ID of the message to the digital broadcast receiving apparatus 5A ₂ (PID). That is, the CAT processing unit 63 includes a service descriptor indicating that message transmission is performed including the conditional access method identification, and a conditional access method descriptor in which the conditional access method identification and the packet identifier are associated with each other. A plurality of CATs (message identification tables) are received via the broadcast receiving means 50A.
Here, the CAT processing unit 63 includes a CA service descriptor analysis unit 631 and a conditional access system descriptor analysis unit 632.

  The CA service descriptor analysis unit (service descriptor analysis unit) 631 analyzes the CA service descriptor (service descriptor) described in the CAT and determines whether or not the message service is being implemented. Specifically, the CA service descriptor analyzing unit 631 converts the CA service descriptor (see FIG. 32B) having the conditional access system identification (CA System id) stored in the storage unit 62 into the CAT (FIG. 32 (a)), and if there is a CA service descriptor having the same conditional access system identification, it is determined that the message service is being implemented. Here, if it is determined that the message service is being implemented, this is notified to the conditional access method descriptor analysis means 632.

  The conditional access system descriptor analyzing means 632 analyzes the conditional access system descriptor described in the CAT, and extracts an identifier (PID) of a packet transmitting a message (common message, individual message). . Specifically, the conditional access method descriptor analyzing unit 632 receives the notification that the message service is being performed from the CA service descriptor analyzing unit 631, and then stores the conditional access method stored in the storage unit 62. A conditional access system descriptor having an identification (CA System id) (see FIG. 32C) is searched in the CAT (see FIG. 32A) and has the same conditional access system identification. The EMM PID (limited reception PID) is extracted. The PID extracted here is output to the broadcast receiving means 50A.

In this way, by configuring the digital broadcast receiving apparatus 5A _2, at the same time even when a plurality of messages are sent, it is possible to identify the PID of the EMM by limited reception method descriptor, the digital broadcast receiving apparatus 5A ₂ Only messages targeted for can be extracted.

<< Second Embodiment >>
[Outline of digital broadcasting system]
Next, with reference to FIG. 8, a configuration outline of a digital broadcasting system S _B according to the second embodiment.

Digital broadcasting system _{S B,} a plurality of broadcasters A, B, digital broadcast transmitting apparatus 1B (1) having ... is, 1B (1), ... and the digital broadcast receiving apparatus 5B installed in each home such as (5 ), 5B (5),..., And is a system in which content (broadcast program) transmitted by digital broadcast from the digital broadcast transmission device 1B is received by the digital broadcast reception device 5B and viewed by the viewer. The broadcast wave W may be wireless or wired, such as terrestrial digital broadcast, satellite broadcast, and cable broadcast.

The digital broadcasting system S _B is the individual identifier generated by the digital broadcast receiving apparatus 5B, by notifying the digital broadcasting transmission apparatus 1C, the addressed digital broadcast receiver 5B via the broadcast wave W from the digital broadcast transmission apparatus 1B It is possible to send individual message information.

  The digital broadcast transmission device 1B transmits content to the digital broadcast reception device 5B via the broadcast wave W. Further, the digital broadcast transmitting apparatus 1B has a function of performing duplication confirmation on the individual identifier notified from the digital broadcast receiving apparatus 5B, and transmitting message information addressed to the digital broadcast receiving apparatus 5B using an individual identifier that does not overlap. Further, the digital broadcast transmission device 1B has a function of grouping individual digital broadcast reception devices 5B and transmitting message information to a specific group.

  The digital broadcast receiving device 5B receives content via the broadcast wave W. The digital broadcast receiving device 5B notifies the individual identifier generated by itself to the digital broadcast transmitting device 1B, and acquires message information addressed to the individual identifier transmitted from the digital broadcast transmitting device 1B via the broadcast wave W. Have

Next, an overview of the operation of the digital broadcast system according to the second embodiment will be described with reference to FIG.
First, the individual identifier generated by the digital broadcast receiving device 5B is displayed on the display screen, and the viewer notifies the broadcast operator of the displayed individual identifier ID2 by telephone, postcard, Internet, or the like (step SB1). ). Then, the broadcaster registers the individual identifier ID2 in the digital broadcast transmission device 1B. Then, in the subsequent operations, the digital broadcast transmission device 1B specifies the individual digital broadcast reception device 5B with the individual identifier ID2 and transmits an individual message (individual message).

  Also, when the broadcaster wants to manage the digital broadcast receiving device 5B by dividing it into a predetermined group, for example, when the digital broadcast receiving device 5B is to be grouped according to the presence / absence of a broadcast channel contract, viewing area, etc., the digital broadcast transmitting device 1B is an individual message whose destination is the individual identifier ID2, and transmits message control information for specifying the type of group to the digital broadcast receiving apparatus 5B (step SB2). Then, the digital broadcast transmitting device 1B describes the message control information Mc, the partial identifier Pid, and the mask information Msk as a destination in a common message that is a message common to all the digital broadcast receiving devices 5B. Information Msg is transmitted (step SB3). Thereby, even in the case of a common message, among the digital broadcast receivers 5B grouped by the message control information and grouped, the digital broadcast receivers sub-grouped by the partial identifier Pid and the mask information Msk Only 5B will receive the message information.

Thus, the digital broadcasting system S _B according to the second embodiment, since the viewer individual identifier ID2 of the digital broadcast receiving apparatus 5B is generated to notify the broadcaster side, IC such as a conventional CAS card There is no need to distribute the cards individually to each receiving apparatus, and there is no need to manage the IC card identifiers (card numbers).
Hereinafter is a detailed description of the construction and operation of the digital broadcast transmitting apparatus 1B and the digital broadcast receiving apparatus 5B in a digital broadcasting system S _B according to the second embodiment.

[Configuration of digital broadcasting transmitter]
First, the configuration of the digital broadcast transmitting apparatus according to the second embodiment will be described with reference to FIG. 10 (refer to FIG. 8 as appropriate). Here, the digital broadcast transmitting apparatus 1B includes message information storage means 11, message control information storage means 12, message control information individual update means 13, identifier storage means 14, common message generation means 15, and individual message generation. Means 16, broadcast transmission means 19, identifier registration means 20, data broadcast data storage means 17, and data carousel encoding means 18 are provided.
Here, the configuration other than the identifier registration unit 20 is the same as the configuration of the digital broadcast transmitting apparatus 1A described with reference to FIG.

  The identifier registration means 20 inputs the individual identifier ID2 that is the identifier generated by the digital broadcast receiving device 5B and the personal information PD of the viewer from the outside, and registers them in the storage means (identifier storage means 14) as an identifier database. It is. Here, the identifier registration unit 20 includes an individual identifier duplication determination unit 201 and an individual identifier registration unit 202.

The individual identifier duplication determination unit 201 determines whether or not the individual identifier ID2 input from the outside is registered (stored) in the identifier storage unit 14. When the individual identifier ID2 is already registered in the identifier storage unit 14, the individual identifier duplication determination unit 201 displays that fact on a display device (not shown). At this time, the operator of the digital broadcast transmitting apparatus 1B notifies the viewer that the individual identifier ID2 is duplicated by telephone or the like, and has the digital broadcast receiving apparatus 5B generate the individual identifier again. And
On the other hand, when the individual identifier ID2 is not yet registered in the identifier storage unit 14, the individual identifier duplication determination unit 201 notifies the individual identifier registration unit 202 of a registration instruction.

  The individual identifier registration unit 202 registers (stores) the individual identifier ID2 and the personal information PD of the viewer in the identifier storage unit 14. Here, the individual identifier registration unit 202 registers the individual identifier ID2 in the identifier storage unit 14 in association with the personal information PD when the individual identifier duplication determination unit 201 instructs to register the individual identifier ID2.

Here, the individual identifier registration unit 202 outputs the input individual identifier ID2 to the message control information notification generation unit 161 of the individual message generation unit 16. Note that the output to the message control information notification generating unit 161 is performed in order to receive the registration from the digital broadcast receiving device 5B and distribute the individual message for notifying the message control information when the individual identifier ID2 is input. Is.
In this way, the digital broadcast transmitting apparatus 1B does not need to manage a unique identifier for each receiving apparatus in advance in the broadcaster like the card number of the conventional CAS card.
The digital broadcast transmission apparatus 1B can be operated by a program (message transmission program) that causes a general computer to function as each of the means described above.

Here, the digital broadcast transmitting apparatus 1B is configured to transmit one message to the digital broadcast receiving apparatus 5B (FIG. 11). However, as described with reference to FIG. 6, a form of transmitting a plurality of messages simultaneously. It does not matter.
In this case, the digital broadcast transmission apparatus 1B, like the digital broadcast transmission apparatus 1A ₂ described in FIG. 6, a plurality configure (message generating means) for generating a common message and individual messages, In addition, each message generator What is necessary is just to comprise and comprise the CAT production | generation means 71 which adds the information for identifying the message information which a means produces | generates.

In this case, the message generating means includes an individual identifier registration means 10B, a message information storage means 11, a message control information storage means 12, a message control information individual update means 13, an identifier storage means 14, and a common message generation. The means 15 and the individual message generation means 16 may be configured. Then, the common message generation unit 15 and the individual message generation unit 16 identify messages (EMM messages) generated by each message generation unit (not shown) from the outside via an input unit (not shown). The packet identification (PID) of the TS, which is information for this purpose, is input and notified to the broadcast transmission means 19. The broadcast transmission unit 19 multiplexes the CAT generated by the CAT generation unit 71 (FIG. 6) using the MPEG-2 TS system.
As a result, the digital broadcast transmitting apparatus 1B can simultaneously transmit a plurality of different messages.

[Configuration of digital broadcast receiver]
Next, the configuration of the digital broadcast receiving apparatus according to the second embodiment will be described with reference to FIG. 11 (refer to FIG. 8 as appropriate). Here, the digital broadcast receiving apparatus 5B includes a broadcast receiving means 50, a common message processing means 51, an individual message processing means 52, a data carousel decoding means 53, a storage means 54B, a display means 55, and an initialization means. 56, an individual identifier resetting means 57, a time measuring means 58, and an individual identifier generating means 59. Note that FIG. 11 illustrates only an identifier for identifying the digital broadcast receiving device 5B and a configuration related to message distribution using the identifier, and relates to a function of a general digital broadcast receiving device, for example, content reception. The illustration of the configuration to be performed is omitted.
Here, the configuration other than the storage unit 54B, the individual identifier resetting unit 57, the timing unit 58, and the individual identifier generation unit 59 is the same as the configuration of the digital broadcast receiving apparatus 5A described with reference to FIG. A description thereof will be omitted.

  The storage unit 54B stores information unique to the digital broadcast receiving device 5B, and is a general storage medium such as a nonvolatile memory (NVRAM). The storage means 54B stores message control information Mc, individual identifier ID2, personal information PD, and receiver information Ti. The message control information Mc, the personal information PD, and the receiver information Ti are the same as those described in the storage unit 54 of the digital broadcast receiving device 5A in FIG.

The individual identifier ID2 is an identifier for identifying the digital broadcast receiving device 5B. This individual identifier ID2 is generated and written by the individual identifier generating means 59.
The individual identifier ID2 is set to an initial value not used as an identifier in advance. For example, the value “0” is set as the initial value of each identification value. As a result, it is possible to prevent a message that is not a message addressed to the digital broadcast receiving device 5B from being erroneously received before the initial setting.

  The individual identifier resetting means 57 inputs an instruction for resetting the individual identifier ID2 from the outside. The individual identifier resetting means 57 is newly instructed to the individual identifier generating means 59 by receiving a resetting instruction from an input means (not shown) such as a switch or a resetting instruction on the resetting screen. An instruction to generate a unique individual identifier (individual identifier regeneration instruction) is notified.

  Here, since the individual identifier ID2 is generated by the individual identifier generation means 59 described later, the individual identifier ID2 may be duplicated in each digital broadcast receiving device 5B. Accordingly, the individual identifier resetting means 57 is such that the viewer notifies the broadcaster of the individual identifier ID2 displayed on the screen by the individual identifier display means 551 by telephone or the like, and the individual identifier ID2 is duplicated. Is used when the individual identifier ID2 is set again by the viewer.

  The time measuring means 58 is an internal clock that measures the time and holds the current time. For example, the time measuring means 58 measures year / month / day / hour / minute / second as the current time. Here, the current time measured by the time measuring means 58 is read by the individual identifier generating means 59.

  The individual identifier generating unit 59 generates an identifier (individual identifier ID2) for identifying the digital broadcast receiving device 5B based on the internal information of the digital broadcast receiving device 5B. Here, the individual identifier generation unit 59 includes a random number generation unit 591, a temporary identifier generation unit 592, and a hash function calculation unit 593. Here, it is assumed that the individual identifier generation unit 59 generates an individual identifier using internal information such as a random number, the current time, and receiver information.

  The random number generating means 591 generates a random number (pseudo random number). As the random number generation algorithm in the random number generation means 591, a general method can be used, and the method is not limited to a congruent method, an M-sequence, or the like. Here, the random number generation means 591 has several bytes (for example, 6 bytes). The random number generated by the random number generator 591 is output to the temporary identifier generator 592.

  The temporary identifier generating unit 592 generates a temporary identifier (temporary identifier ID1) for generating the individual identifier ID2. Here, the temporary identifier generating unit 592 connects the receiver information Ti stored in the storage unit 54B, the current time measured by the time measuring unit 58, and the random number generated by the random number generating unit 591. The temporary identifier ID1 is generated. For example, when the manufacturer name 10 bytes and the model name 10 bytes are used as the receiver information Ti, the current time information is 6 bytes, and the random number is 6 bytes, the temporary identifier generating unit 592 has 10 + 10 + 6 + 6 = 32 bytes. A temporary identifier ID1 is generated. The temporary identifier ID1 generated by the temporary identifier generation unit 592 is output to the hash function calculation unit 593.

  The hash function calculation means 593 generates the individual identifier ID2 by calculating the hash value (digest value) of the temporary identifier ID1 generated by the temporary identifier generation means 592. The hash function used in the hash function calculation means 593 is not particularly limited, but is MD5, SHA-1, or the like. For example, the hash function calculation unit 593 generates a 16-byte individual identifier ID2 when MD5 is used as a hash function, and generates a 20-byte individual identifier ID2 when SHA-1 is used. At this time, the hash function calculation means 593 may add a checksum to the calculation result of the hash function to obtain the individual identifier ID2. The individual identifier ID2 generated by the hash function calculation unit 593 is written and stored in the storage unit 54B.

  Here, the temporary identifier generation unit 592 generates the temporary identifier ID1 using the receiver information Ti, which is internal information, the random number, and the current time in order to ensure the randomness of the generated individual identifier ID2. The temporary identifier ID1 may be generated from at least one internal information of the receiver information Ti, a random number, and the current time. When generating an individual identifier from one piece of internal information, the temporary identifier generation unit 592 is omitted from the configuration, and the hash function calculation unit 593 uses a hash value for the receiver information Ti, random numbers, or internal information of the current time. Just calculate.

  This individual identifier generating means 59 is assumed to operate at the time of initial setting of the digital broadcast receiving device 5B. The individual identifier generating unit 59 operates even when an instruction to generate a new individual identifier (individual identifier regeneration instruction) is notified from the individual identifier resetting unit 57.

  Note that the individual identifier generation means 59 may generate the individual identifier ID2 in the format shown in FIG. In this case, the individual identifier generating unit 59 further includes a receiver type adding unit (not shown), and the receiver type adding unit assigns the hash value, which is the calculation result of the hash function calculating unit 603, to the individual number PN. The individual identifier ID2 is generated by adding the receiver type PK and further adding the checksum CRC. At this time, the receiver type PK is described in advance in the receiver information Ti of the storage unit 54B.

As described above, the digital broadcast receiving device 5B generates the individual identifier ID2 from the random temporary identifier ID1 generated using the receiver information Ti, the random number, and the current time by the individual identifier generating unit 59. Thereby, the possibility that the individual identifier ID2 is duplicated in each digital broadcast receiving device 5B can be suppressed as much as possible.
Further, since the digital broadcast receiving device 5B can receive a message specific to the digital broadcast receiving device 5B by the individual identifier generated by the digital broadcast receiving device 5B, a conventional CAS card or the like for each receiving device. The IC card is unnecessary, and the cost can be reduced.
The digital broadcast receiving apparatus 5B can be operated by a program (message receiving program) that causes a general computer to function as each of the means described above.

Here, the digital broadcast receiving device 5B is configured to receive one message from the digital broadcast transmitting device 1B (FIG. 10). However, as described with reference to FIG. It may be a form in which a message to 5B is extracted and received.
In this case, broadcasting the digital broadcast receiving apparatus 5B, like the digital broadcast receiving apparatus 5A ₂ described in FIG. 7, a storage unit 62, further comprising a CAT processing unit 63 has been described a broadcast receiving unit 50 in FIG. 7 What is necessary is just to comprise by replacing with the receiving means 50A.
Thereby, the digital broadcast receiving device 5B can extract and receive a message to itself from different messages.

[Operation of digital broadcasting system]
Next, (for configuration, appropriately diagram 10,11 see) Referring to FIG. 13 to be described the operation of the digital broadcasting system S _B according to the second embodiment.
First, in the initial setting, the digital broadcast receiving device 5B generates the individual identifier ID2 by the individual identifier generation unit 59 (step S10B). Specifically, the digital broadcast receiving device 5B first generates a random number by the random number generating unit 591 of the individual identifier generating unit 59. Then, the digital broadcast receiving apparatus 5B uses the temporary identifier generating means 592 to receive the receiver information Ti stored in the storage means 54B, the current time measured by the time measuring means 58, and the random number generated by the random number generating means 591. Are combined to generate a temporary identifier ID1. Further, the digital broadcast receiving device 5B generates the individual identifier ID2 by calculating the hash value of the temporary identifier ID1 by the hash function calculating means 593.

  Then, the digital broadcast receiving apparatus 5B writes and stores the individual identifier ID2 generated in step S10B in the storage unit 54B by the individual identifier generation unit 59 (hash function calculation unit 603) (step S10C).

Then, the digital broadcast receiving apparatus 5B displays the individual identifier ID2 generated in step S10C on the display screen by the individual identifier display unit 551 of the display unit 55 (step S10). The screen at this time is a setting screen of the digital broadcast receiving apparatus 5A or a data broadcast screen. Incidentally, the operation of displaying the individual identifier ID2 on the screen of the data broadcast will be omitted since the operation is basically the digital broadcasting system S _A described in FIG. 5 are the same.

Moreover, since the step S11 and subsequent operations are the same as the operation basically the digital broadcasting system S _A described in FIG. 5, the description thereof is omitted. However, in the digital broadcasting system S _B, in step S11～13, if the individual identifier overlap, the process returns to step S10B, again, the operation from the step of generating an individual identifier is performed.

<< Modification of Second Embodiment >>
Next, a modification of the second embodiment will be described with reference to FIG. 12 (refer to FIG. 8 as appropriate). In the digital broadcast receiving device 5B of FIG. 11, the individual identifier is generated using the internal information such as the random number, the current time, and the receiver information. In the digital broadcast receiving device 5B ₂ shown in FIG. 12, by incorporating a code (region code) unique to the region where the receiving device is installed into the individual identifier, the individual identifier that the viewer notifies the broadcaster of We decided to shorten the number of letters.

Here, a mechanism for shortening the number of characters of the individual identifier to be displayed will be described using an example when the individual identifier of FIG. 29 is displayed on the display screen.
For example, when receiving devices are installed all over Japan, and considering future shipments, etc., to make each individual value (individual identifier here) inconsistent nationwide, 20 decimal digits It is assumed that a value of In this case, as shown in FIG. 29 (a), if a random number of 8 bytes is used, a decimal value of 20 digits can be realized. In this case, in the digital broadcast receiving apparatus, the individual identifier notified by the viewer to the broadcaster is 25 digits including a 5-digit CRC (checksum).

  On the other hand, in order to prevent the individual values of the receiving apparatuses from matching in units of prefectures, a 17-digit value in decimal is required. In this case, as shown in FIG. 29B, if a random number of 7 bytes is used, a 17-digit value can be expressed in decimal. In this case, when a 2-digit region-specific code (region code), a 17-digit random number, and a 5-digit CRC are included, the individual identifier notified to the broadcaster by the viewer is 24 digits.

Furthermore, if this area code is displayed on the screen as a character string indicating the area (for example, “Tokyo”), as shown in FIG. 29C, the individual identifier that the viewer notifies the broadcaster is , A character string specifying the area code and a 22-digit numerical value (random number + CRC).
Thus, by setting the individual identifier to a value to which the area code is added, the number of characters in the numerical value of the individual identifier notified to the broadcaster by the viewer can be shortened, and reading errors of the viewer can be prevented.

[Configuration of digital broadcast receiver]
Hereinafter, with reference to FIG. 12, a configuration of a digital broadcast receiving apparatus which is a modification of the second embodiment will be described. Here, the digital broadcast receiving apparatus 5B ₂ includes a broadcast receiving means 50, a common message processing means 51, an individual message processing means 52, a data carousel decoding means 53, a storage means 54C, a display means 55, and an initialization. Means 56, individual identifier resetting means 57, timing means 58, individual identifier generating means 59B, and area code setting means 60 are provided. In FIG 12, it illustrates only relevant configuration message delivery using an identifier and the identifier for identifying the digital broadcast receiver 5B _2, the general functions of the digital broadcast receiving apparatus, for example, the content receiver A related configuration is not shown.
Here, the configuration other than the storage unit 54C, the individual identifier generation unit 59B, and the area code setting unit 60 is the same as the configuration of the digital broadcast receiving device 5B described with reference to FIG. Omitted.

Storage means 54C is for storing the digital broadcast receiving apparatus 5B _2-specific information is a common storage medium such as nonvolatile memory (NVRAM). The storage means 54C stores message control information Mc, individual identifier ID2, personal information PD, receiver information Ti, and area code Ac. The message control information Mc, personal information PD, and receiver information Ti are the same as those described in the storage means 54 of the digital broadcast receiving device 5A in FIG. Omitted.

  Here, the area code Ac is a code indicating a prefecture, and for example, is a code for identifying each prefecture such as “00: Hokkaido”, “01: Aomori Prefecture”, and the like. If this area code Ac is a 6-bit value, it can have 64 values, and each prefecture can be identified. The area code Ac is set by the area code setting means 60 described later.

Individual identifier generating unit 59B is configured to generate an identifier (individual identifier ID2) for, based on the region code Ac, to identify the digital broadcast receiver 5B _2. Here, the individual identifier generating unit 59B includes a random number generating unit 591B and a region code adding unit 594.

  The random number generator 591B generates a random number (pseudo random number). For example, as described with reference to FIG. 29, the random number generation unit 601B generates a 7-byte random number that prevents the individual values of the receiving apparatus from matching each prefecture. The random number generated by the random number generating unit 591B is output to the regional code adding unit 594.

The regional code adding unit 594 generates the individual identifier ID2 by adding the regional code Ac to the random number generated by the random number generating unit 591B. Here, the regional code adding unit 594 generates the individual identifier ID2 by concatenating the regional code Ac stored in the storage unit 54C and the 7-byte random number generated by the random number generating unit 601B. At this time, the region code adding means 594 may add a checksum (CRC) to the concatenated value to obtain the individual identifier ID2. The individual identifier ID2 generated by the area code adding unit 594 is written and stored in the storage unit 54C.
As a result, as shown in FIG. 29 (b), the regional code adding means 594 can generate the individual identifier ID2 as a 19-digit number consisting of the regional code and a random number, and match the individual identifiers of the receiving devices nationwide. This can be shortened as compared with the case of FIG.

In this case, the individual identifier display means 551 refers to a region code table (not shown) in which the region code is associated with the character string of each prefecture, and determines the region code included in the individual identifier ID2 for each prefecture. It is good also as displaying by replacing with the character string.
As a result, the individual identifier display means 551 can display the part displayed with the number of the individual identifier ID2 in a shortened manner as compared with FIG. 29B, as shown in FIG.

  When displaying the individual identifier ID2 by data broadcasting, the BML data Dt is referred to an area code table (not shown), and the area code of the individual identifier ID2 read from the storage means 54C is replaced with a corresponding character string. By describing the instruction (procedure) to display, the part displayed with the number of the individual identifier ID2 as shown in FIG. 29C can be shortened.

Region code setting unit 60, the digital broadcast receiving apparatus 5B ₂ is to set the region code Ac showing the installed areas in the storage unit 54C. This region code setting means 60 displays a setting screen for selecting a prefecture, asks the viewer to select, and refers to a region code table (not shown) in which a prefecture and a region code are associated in advance. Then, the region code Ac corresponding to the selected prefecture is set in the storage means 54C. Of course, the region code setting means 60 may be configured to directly input the region code on the setting screen.

As described above, the digital broadcast receiving device 5B ₂ includes the area code in the individual identifier ID2, thereby reducing the number of characters of the number of the individual identifier ID2 presented to the viewer and preventing the viewer from reading mistakes. be able to.

[Operation of digital broadcasting system]
The operation of the digital broadcast system according to the modification of the second embodiment is basically the same as the operation described in FIG. However, the digital broadcast receiving device 5B generates the individual identifier using the random number, the current time, and the receiver information as the internal information by the individual identifier generating means 59 in step S10C of FIG. The device 5B ₂ is different in that the individual identifier generating unit 59B generates a code (region code) unique to the region where the receiving device is installed by incorporating it into the individual identifier.
The subsequent operation, is identical to the operation of the digital broadcasting system S _B described in FIG. 13, the description thereof is omitted.

«Third embodiment»
[Outline of digital broadcasting system]
Next, with reference to FIG. 14, an outline of a digital broadcasting system S _C configuration according to the third embodiment.

Digital digital broadcasting system S _C has a plurality of broadcasters A, B, digital broadcast transmission apparatus 1C (1) having ... is, 1C (1), ... and an identifier management apparatus 3, which is installed in each household etc. The broadcast receiving devices 5C (5), 5C (5),... Are received by the digital broadcast receiving device 5C and received by the viewer. System.
This digital broadcasting system S _C is a digital broadcast transmission apparatus 1C is an identifier (specified identifier) identifier management apparatus 3 manages digital broadcast receiving apparatus 5C, 5C, ... delivered separately for each, using the designated identifier Thus, individual message information addressed to the digital broadcast receiving device 5C can be transmitted. This specified identifier is different from the individual identifier held or generated by the digital receiver described in the first and second embodiments, in order to manage each digital receiver on the broadcaster side. This is an identifier assigned to each digital receiving apparatus. That is, this designated identifier is an identifier systematized on the broadcaster side.

  The digital broadcast transmission device 1C transmits content to the digital broadcast reception device 5C via the broadcast wave W. Further, the digital broadcast transmission device 1C has a function of transmitting the designated identifier acquired from the identifier management device 3 to the digital broadcast reception device 5C with the individual identifier notified from the digital broadcast reception device 5C as a destination. Furthermore, the digital broadcast transmitting device 1C has a function of grouping individual digital broadcast receiving devices 5C and transmitting message information to a specific group.

  The identifier management device 3 manages individual identifiers for each of the digital broadcast receiving devices 5C, 5C,. The identifier management device 3 generates a new identifier (designated identifier) managed by the identifier management device 3 for the individual identifier of the digital broadcast reception device 5C notified from the digital broadcast transmission device 1C. It has a function to transmit to 1C.

  The digital broadcast receiving apparatus 5C receives content via the broadcast wave W. An individual identifier ID2 is set in advance in the digital broadcast receiving device 5C. The viewer notifies the broadcaster of this individual identifier ID2, and the digital broadcast receiving device 5C holds the designated identifier distributed from the digital broadcast transmitting device 1C to the individual identifier via the broadcast wave W, thereby enabling digital broadcasting. The receiving device 5C has a function of acquiring message information addressed to the designated identifier transmitted from the digital broadcast transmitting device 1C via the broadcast wave W.

  Here, the specified identifier is generated by the identifier management device 3, but the specified identifier is not necessarily generated by the individually prepared identifier management device 3. For example, it may be configured by being incorporated in a predetermined digital broadcast transmission apparatus 1C.

Next, an overview of the operation of the digital broadcast system according to the third embodiment will be described with reference to FIG.
First, the viewer notifies the broadcaster of the individual identifier ID2 displayed on the display screen of the digital broadcast receiving device 5C by telephone, postcard, Internet, or the like (step SC1). Then, when the broadcaster registers the individual identifier ID2 in the digital broadcast transmission device 1C, the digital broadcast transmission device 1C acquires a new identifier (designated identifier ID3) from the identifier management device 3 (step SC2). Then, the digital broadcast transmitting device 1C transmits the designated identifier ID3 to the digital broadcast receiving device 5C by an individual message with the individual identifier ID2 as the destination (step SC3). Then, in the subsequent operations, the digital broadcast transmission device 1C specifies the individual digital broadcast reception device 5C with the designated identifier ID3 and transmits the individual message.

  Also, when the broadcaster wants to manage the digital broadcast receiving device 5C in a predetermined group, for example, when the digital broadcast receiving device 5C is to be grouped according to the presence / absence of a broadcast channel contract, viewing area, etc., the digital broadcast transmitting device 1C is an individual message whose destination is the designated identifier ID3, and transmits message control information for specifying the group type to the digital broadcast receiving apparatus 5C (step SC4). The digital broadcast transmitting device 1C includes message control information Mc as a destination and an identifier indicating a part of the designated identifier ID3 in a common message that is a message common to all the digital broadcast receiving devices 5C, and includes message control. Among the digital broadcast receiving devices 5C grouped by the information Mc, a partial identifier Pid for subgrouping the digital broadcast receiving device 5C to be processed with the message information Msg and a part (partial identifier) of the designated identifier ID3 Mask information Msk for specifying the area is described, and message information Msg is transmitted (step SC5). Thus, even for a common message, the digital broadcast reception grouped by the message control information Mc and subgrouped by the partial identifier Pid and the mask information Msk among the grouped digital broadcast reception devices 5C. Only the device 5C receives the message information.

When the digital broadcast receiving device 5C has the designated identifier ID3, the digital broadcast receiving device 5C that has received the common message determines that the partial identifier Pid is an identifier indicating a part of the designated identifier ID3. Is done.
The digital broadcast transmitting apparatus 1C performs a message display process (step SC5) for displaying a message on the digital broadcast receiving apparatus 5C regardless of whether or not the identifier registration process (step SC1) and the grouping process (steps SC3 and SC4) are performed. ) Alone at any time. As a result, it is possible for the broadcaster to manage the digital broadcast receiving apparatus 5C that has never been subjected to the identifier registration process (step SC1) or the grouping process (steps SC3 and SC4) and display a message. It becomes. In this case, since the digital broadcast receiving device 5C does not have the designated identifier ID3, in the digital broadcast receiving device 5C to which the common message is transmitted, the partial identifier Pid is an identifier indicating a part of the individual identifier ID2. To be judged.

Thus, the digital broadcasting system S _C according to the third embodiment is different from the individual identifier ID2 sent from the digital broadcast receiver 5C, for allocating a unique identifier designated ID3, such as conventional CAS card There is no need to distribute IC cards individually for each receiving apparatus, and there is no need to manage IC card identifiers (card numbers).
Hereinafter, a digital broadcasting transmitting apparatus 1C in a digital broadcasting system S _C, the configuration and operation of the identifier management apparatus 3 and the digital broadcast receiving apparatus 5C will be described in detail according to the third embodiment.

[Configuration of digital broadcasting transmitter]
First, with reference to FIG. 16 (refer to FIG. 14 as appropriate), the configuration of the digital broadcast transmission apparatus according to the third embodiment will be described. Here, the digital broadcast transmitting apparatus 1C includes an individual identifier registration unit 10B, a message information storage unit 11, a message control information storage unit 12, a message control information individual update unit 13B, an identifier storage unit 14B, and a common message generation. Means 15, individual message generation means 16B, data broadcast data storage means 17, data carousel encoding means 18, broadcast transmission means 19, communication transmission / reception means 21, and designated identifier acquisition means 22 are provided. Yes.

  The configuration other than the individual identifier registration unit 10B, the message control information individual update unit 13B, the identifier storage unit 14B, the individual message generation unit 16B, the communication transmission / reception unit 21 and the designated identifier acquisition unit 22 will be described with reference to FIG. Since it is the same as the configuration of 1A, the same reference numerals are given and description thereof is omitted.

The individual identifier registration means 10B inputs the individual identifier ID2 that is an identifier unique to the digital broadcast receiving apparatus 5C and the viewer's personal information PD, and registers them in the storage means (identifier storage means 14B) as an identifier database. For example, the individual identifier registration unit 10B inputs the individual identifier ID2 notified from the viewer by telephone, postcard, Internet, etc. and the personal information PD of the viewer, such as a keyboard, by the operator who operates the digital broadcast transmitting apparatus 1C. By being input by means (not shown), the individual identifier ID2 is written and stored (registered) in the identifier storage means 14B in association with the personal information PD.
The individual identifier registration unit 10B outputs an instruction to acquire the specified identifier ID3 to the specified identifier acquisition unit 22 when the individual identifier ID2 and the personal information PD of the viewer are input.

  The message control information individual updating means 13B individually updates the message control information Mc stored in the digital broadcast receiving device 5C. Here, the message control information individual updating means 13B inputs the designated identifier ID3 of the digital broadcast receiving apparatus 5C to be updated and new message control information Mc from the outside via an input means (not shown). Then, it instructs the individual message generating means 16B to generate an individual message for transmitting the message control information Mc to the digital broadcast receiving apparatus 5C.

  The identifier storage unit 14B stores the individual identifier ID2 and personal information PD registered by the individual identifier registration unit 10B in association with the specified identifier ID3 acquired by the specified identifier acquisition unit 22, and is stored in a hard disk or the like. It is a general storage medium. The identifier storage unit 14B creates a database by associating information such as the name, address, and telephone number, which is the personal information PD of the viewer, for each individual identifier ID2 and designated identifier ID3. It is assumed that a predetermined initial value that is not recognized as an identifier is set in the database of the identifier storage unit 14B until the individual identifier ID2 and the designated identifier ID3 are registered.

  The individual message generating means 16B generates a message (individual message) to be individually transmitted to each digital broadcast receiving device 5C. Here, the individual message generation unit 16B includes a message control information notification generation unit 161B and a designated identifier notification generation unit 162.

  The message control information notification generation unit 161B generates a message for transmitting the message control information Mc to the digital broadcast receiving device 5C as an individual message. The individual message generated by the message control information notification generation unit 161B is output to the broadcast transmission unit 19.

  Here, the message control information notification generating unit 161B generates a message (message control information notification) having the specified identifier ID3 as the destination and the message control information Mc as the content. That is, the message control information notification generating unit 161B generates an individual message (message control information notification) for the digital broadcast receiving device 5C that holds the designated identifier ID3. When the message control information Mc is transmitted to the digital broadcast receiving device 5C, the individual digital broadcast receiving devices 5C are grouped according to the value of the message control information Mc.

  The message control information notification generating unit 161B may generate an individual message when the message control information Mc and the designated identifier ID3 are input via an input unit (not shown), or may perform message control in advance. A time table describing the delivery time and delivery destination of the message control information Mc may be stored in the information storage unit 12, and an individual message may be generated according to the time table.

  Furthermore, when the message control information notification generating unit 161B receives a notification from the message control information individual updating unit 13B to transmit new message control information Mc to the digital broadcast receiving device 5C indicated by the designated identifier ID3, An individual message is generated using the input designated identifier ID3 and message control information Mc. As a result, new message control information Mc is registered in the digital broadcast receiving device 5C.

The designated identifier notification generating unit 162 generates a message for transmitting the designated identifier ID3 to the digital broadcast receiving device 5C as an individual message. The individual message generated by the designated identifier notification generation unit 162 is output to the broadcast transmission unit 19.
Here, the designated identifier notification generating means 162 generates a message (designated identifier notification) having the individual identifier ID2 as the destination and the designated identifier ID3 as the contents. That is, the designated identifier notification generating unit 162 generates an individual message (specified identifier notification) for the digital broadcast receiving device 5C that holds the individual identifier ID2. By transmitting this designated identifier ID3 to the digital broadcast receiving device 5C, it is possible to distribute subsequent individual messages with the designated identifier ID3 managed by the broadcaster side as the destination.

  In this case, the designated identifier notification generating unit 162 registers the individual message (designated identifier notification) when the individual identifier ID2 and the personal information PD are registered by the individual identifier registering unit 10B and the designated identifier ID3 is obtained by the designated identifier obtaining unit 22. Will be generated. The designated identifier notification generation unit 162 may also notify the message control information Mc when notifying the designated identifier ID3.

  Here, referring to FIGS. 27, 30, and 31 (see FIG. 16 as appropriate), the message information notification generating unit 151 of the common message generating unit 15 and the message control information notification generating unit 161B of the individual message generating unit 16B, the designated identifier notification The format of each message generated by the generation unit 162 will be described.

As shown in FIG. 27A, the message information notification generating unit 151 sets the message destination to “message control information (Mc)”, “partial identifier (Pid)”, “mask information (Msk)”, and The content is “message information (Msg)”, and a message information notification that is a common message is generated.
The format of this message information notification may be the data format of the EMM common message standardized by ARIB STD-B25.

  That is, as shown in FIG. 30, the message information notification generation unit 151 describes the message control information Mc in the area R1 in the EMM message section header of the EMM common message section structure, and the area R2 of the fixed part of the EMM message body. A partial identifier Pid is described, mask information Msk is described in the fixed part region R3 of the EMM message body, and message information Msg is described in the message code body region R4 of the EMM message body, thereby generating a common message. .

  As shown in (b-1) of FIG. 27B, the message control information notification generating unit 161B sets the message destination as “designated identifier (ID3)” and the message content as “message control information (Mc)”. The message control information notification that is an individual message is generated.

  As shown in (b-2) of FIG. 27B, the designated identifier notification generating unit 162 sets the message destination as “individual identifier (ID2)” and the message content as “designated identifier (ID3)”. Generate a specified identifier notification that is a message. In addition, when notifying the message control information Mc together with the specified identifier ID3, the specified identifier notification generating unit 162 sets the message destination to “individual identifier (ID2) as shown in (b-3) of FIG. ) ”, And the content of the message is“ message control information (Mc) ”and“ designated identifier (ID3) ”, and a designated identifier notification (with message control information) as an individual message is generated.

Note that the individual message in FIG. 27B has a separate type such as whether the individual message is a message control information notification, a specified identifier notification, or a specified identifier notification (with message control information). Needless to say, it is added.
The format of the message control information notification and the designation identifier notification may be the data format of the EMM individual message standardized by STD-B25.

That is, the message control information notification generating unit 161B and the designated identifier notification generating unit 162, as shown in FIG. An individual message is generated by describing the destination of the message and describing the content of the message in the message code area R6 of the EMM message body (1, 2,..., N).
Returning to FIG. 16, the description of the configuration of the digital broadcast transmitting apparatus 1C will be continued.

  The communication transmission / reception means 21 transmits / receives communication data to / from the identifier management device 3 via the network N, and is, for example, a communication control board. Here, the communication transmitting / receiving means 21 transmits a request (specified identifier request) for acquiring the specified identifier ID3 input from the specified identifier acquiring means 22 to the identifier management apparatus 3 as communication data, and returns from the identifier management apparatus 3 The designated identifier ID3 is received as communication data. The received designated identifier ID3 is output to the designated identifier acquisition means 22.

  The designated identifier obtaining unit 22 obtains the designated identifier ID3 from the identifier management device 3 via the communication transmitting / receiving unit 21. Here, the specified identifier acquisition unit 22 includes a specified identifier request unit 221 and a specified identifier registration unit 222.

  The designated identifier request unit 221 generates a request for obtaining the designated identifier ID3 (designated identifier request), and transmits the designated identifier request to the identifier management device 3. Here, the designated identifier requesting means 221 generates a designated identifier request message when an instruction to acquire the designated identifier ID3 is notified from the individual identifier registering means 10B, and via the communication transmitting / receiving means 21, A designated identifier request is transmitted to the identifier management device 3.

The designated identifier registration unit 222 registers the designated identifier ID3 acquired from the identifier management device 3 in the identifier database of the identifier storage unit 14B. Here, the designated identifier registration unit 222 registers the designated identifier ID3 in the identifier storage unit 14B when the designated identifier ID3 is obtained via the communication transmitting / receiving unit 21.
The designated identifier registration unit 222 registers the designated identifier ID3 in the identifier database of the identifier storage unit 14B, and then can centrally manage the digital broadcast receiving device 5C using the designated identifier ID3. Therefore, the individual identifier ID2 corresponding to the designated identifier ID3 is used. May be initialized or invalidated.

  Alternatively, when both the designated identifier ID3 and the individual identifier ID2 are registered, the designated identifier registration unit 222 may set the priority order for referring to the designated identifier ID3 higher than the priority order for referring to the individual identifier ID2. . Thereby, the individual message generating means 16B generates an individual message using the individual identifier ID2 until the designated identifier ID3 is registered, and after the designated identifier ID3 is registered, the individual message using the designated identifier ID3. Can also be generated.

  Also, here, the designated identifier registration unit 222 outputs the designated identifier ID3 to the individual message generation unit 16B at the stage of obtaining the designated identifier ID3 in order to notify the designated identifier ID3 to the digital broadcast receiving device 5C. I will do it.

Thus, the digital broadcast transmitting apparatus 1C can set an identifier (designated identifier) for each receiving apparatus later without distributing an IC card (CAS card or the like) to the receiving apparatus in advance. Thereby, the cost of IC cards and the cost of managing them can be reduced.
The digital broadcast transmission apparatus 1C can be operated by a program (message transmission program) that causes a general computer to function as each of the above-described means.

Here, the digital broadcast transmitting apparatus 1C is configured to transmit one message to the digital broadcast receiving apparatus 5C (FIG. 18). However, as described with reference to FIG. 6, a form of transmitting a plurality of messages simultaneously. It does not matter.
In this case, similarly to the digital broadcast transmission device 1A ₂ described with reference to FIG. 6, the digital broadcast transmission device 1C includes a plurality of configurations (message generation means) for generating a common message and individual messages, and further generates each message. What is necessary is just to comprise and comprise the CAT production | generation means 71 which adds the information for identifying the message information which a means produces | generates.

In this case, the message generation means includes message information storage means 11, message control information storage means 12, message control information individual update means 13, identifier storage means 14, common message generation means 15, and individual message generation. The means 16 and the identifier registration means 19 may be configured. Then, the common message generation unit 15 and the individual message generation unit 16 identify messages (EMM messages) generated by each message generation unit (not shown) from the outside via an input unit (not shown). The packet identification (PID) of the TS, which is information for this purpose, is input and notified to the broadcast transmission means 19. The broadcast transmission unit 19 multiplexes the CAT generated by the CAT generation unit 71 (FIG. 6) using the MPEG-2 TS system.
Thereby, the digital broadcast transmitting apparatus 1C can simultaneously transmit a plurality of different messages.

[Configuration of identifier management device]
Next, the configuration of the identifier management apparatus according to the third embodiment will be described with reference to FIG. 17 (refer to FIG. 15 as appropriate). Here, the identifier management device 3 includes a communication transmission / reception unit 30, a specified identifier distribution unit 31, a specified identifier generation unit 32, and a specified identifier storage unit 33.

  The communication transmitting / receiving means 30 transmits / receives communication data to / from the digital broadcast transmitting apparatus 1C via the network N, and is, for example, a communication control board. Here, the communication transmitting / receiving means 30 outputs a designated identifier request, which is a message received as communication data from the digital broadcast transmitting apparatus 1C, to the designated identifier request receiving means 311. The communication transmitting / receiving unit 30 transmits the specified identifier ID3 output from the specified identifier transmitting unit 312 as communication data to the requested digital broadcast transmitting apparatus 1C.

  The designated identifier distribution unit 31 distributes (transmits) the designated identifier ID3 to the requested digital broadcast transmission apparatus 1C via the communication transmitting / receiving unit 30. Here, the specified identifier distribution unit 31 includes a specified identifier request receiving unit 311 and a specified identifier transmitting unit 312.

  The designated identifier request receiving unit 311 receives a request (designated identifier request) for obtaining the designated identifier ID3 from the digital broadcast transmitting apparatus 1C via the communication transmitting / receiving unit 30. When the designated identifier request receiving unit 311 receives the designated identifier request, the designated identifier request receiving unit 311 outputs a request to the designated identifier generating unit 32 to generate the designated identifier ID3.

  The designated identifier transmitting unit 312 transmits the designated identifier ID3 generated by the specified identifier generating unit 32 to the requested digital broadcast transmitting apparatus 1C via the communication transmitting / receiving unit 30.

The designated identifier generating unit 32 generates a unique identifier (specified identifier ID3) for each digital broadcast transmitting apparatus 1C. The generation method of the designated identifier ID3 is not particularly limited as long as it does not have a duplicate value. For example, the designated identifier generating unit 32 generates the designated identifier ID3 so that the sequential numbers are sequentially obtained when requested.
Here, the designated identifier generating means 32 generates the designated identifier ID3 and outputs it to the designated identifier transmitting means 312 when the request to generate the designated identifier ID3 is input from the designated identifier request receiving means 311. It is written and stored in the designated identifier storage means 33.

The designated identifier storage unit 33 stores the designated identifier ID3 generated by the specified identifier generation unit 32, and is a general storage medium such as a hard disk.
In this way, the identifier management device 3 sequentially generates an identifier (designated identifier ID3) for identifying each digital broadcast transmission device 1C in response to a request, so that the card number of the IC card (CAS card or the like) Thus, it is not necessary to manage identifiers in advance, and the cost of IC cards and the cost of managing them can be reduced.

[Configuration of digital broadcast receiver]
Next, the configuration of the digital broadcast receiving apparatus according to the third embodiment will be described with reference to FIG. Here, the digital broadcast receiving apparatus 5C includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52B, a data carousel decoding unit 53, a storage unit 54D, a display unit 55B, and an initialization unit. 56B. FIG. 18 illustrates only an identifier for identifying the digital broadcast receiving device 5C and a configuration related to message delivery using the identifier, and relates to a function of a general digital broadcast receiving device, for example, content reception. The illustration of the configuration to be performed is omitted.
Here, the configuration other than the individual message processing unit 52B, the storage unit 54D, the display unit 55B, and the initialization unit 56B is the same as the configuration of the digital broadcast receiving apparatus 5A described with reference to FIG. To do.

  The individual message processing means (individual message receiving means) 52B analyzes an individual message that is an individual message for each digital broadcast receiving device 5C input via the broadcast receiving means 50, and performs processing corresponding to the message. is there. Here, the individual message processing unit 52B includes a message control information notification analysis unit 521B and a designated identifier notification analysis unit 522.

  The message control information notification analyzing unit 521B analyzes whether the message control information notification (see FIGS. 27B and 27B-1) transmitted as the individual message is a message addressed to the digital broadcast receiving apparatus 5C. When the message is addressed to the digital broadcast receiving apparatus 5C, the message control information notified by the message control information notification is processed.

Specifically, the message control information notification analyzing unit 521B has the specified identifier ID3 stored in the storage unit 54D as the specified identifier that is the destination of the message control information notification (see FIGS. 27B and 27B-1). Is matched, the message control information, which is the content of the message control information notification, is written in the storage means 54D.
For example, the message control information notification analyzing unit 521B has the same identifier as the specified identifier stored in the storage unit 54D, and the message control information that is the content of the individual message is “broadcast channel contract exists”. If (0x0001) ", the value" 0x0001 "is written in the message control information Mc of the storage means 54D.

  The designated identifier notification analyzing unit 522 analyzes whether or not the designated identifier notification (see FIGS. 27B and 27B) transmitted as the individual message is a message addressed to the digital broadcast receiving device 5C. When the message is addressed to the digital broadcast receiving apparatus 5C, the designated identifier notified by the designated identifier notification is processed.

  Specifically, the designated identifier notification analyzing unit 522 matches the individual identifier that is the destination of the designated identifier notification (see FIGS. 27B and 27B) with the individual identifier ID2 stored in the storage unit 54D. In this case, the specified identifier, which is the content of the specified identifier notification, is written in the storage unit 54D. As shown in FIGS. 27B and 27B, the format of the individual message designation identifier notification is “message control information (Mc)” and “designation identifier (ID3)” as message contents. In the case of the added format, the designated identifier notification analyzing unit 522 stores the designated identifier which is the content of the designated identifier notification when the individual identifier as the destination matches the individual identifier ID2 stored in the storage unit 54D. In addition to writing to the means 54D, the message control information that is the content of the designated identifier notification is written to the storage means 54D.

  The storage unit 54D stores information unique to the digital broadcast receiving device 5C, and is a general storage medium such as a nonvolatile memory (NVRAM). This storage means 54D stores message control information Mc, designated identifier ID3, individual identifier ID2, personal information PD, and receiver information Ti. Information other than the designated identifier ID3 is the same as that described in the storage means 54 of the digital broadcast receiving apparatus 5A in FIG.

  The designated identifier ID3 is an identifier for identifying the digital broadcast receiving device 5C notified from the digital broadcast transmitting device 1C by the designation identifier notification of the individual message. The designated identifier ID3 is written by the designated identifier notification analyzing unit 522.

  Of the information stored in the storage means 54D, the designated identifier ID3 is set to an initial value not used as an identifier in advance. For example, the value “0” is set as the initial value of each identification value. As a result, it is possible to prevent erroneous reception of a message that is not addressed to the digital broadcast receiving device 5C before the initial setting.

  The display means 55B displays display data on a display device (not shown) such as a liquid crystal display. Here, the display unit 55B includes an individual identifier display unit 551, a message display unit 552, a BML decryption unit 553, and a designated identifier display unit 554. The configuration other than the designated identifier display unit 554 is the same as that described in the display unit 55 of the digital broadcast receiving apparatus 5A in FIG.

The designated identifier display unit 554 displays the designated identifier ID3 stored in the storage unit 54D as display data. The designated identifier display means 554 reads out the designated identifier ID3 from the storage means 54D when instructed to display the initial setting screen by an input means (not shown) such as a remote control device, for example. The value of the designated identifier ID3 is displayed as text data (a character string expressed by decimal numbers) in a predetermined area. The viewer can notify the broadcaster of the designated identifier ID3 displayed on the screen by telephone or the like, thereby making it possible to change the viewing contract or the contract.
This designated identifier display means 554 functions after the designated identifier ID3 is registered in the storage means 54D.

The initialization unit 56B initializes the message control information Mc and the designated identifier ID3 stored in the storage unit 54D. The initialization unit 56B receives an initialization instruction from an input unit (not shown) such as a switch or an initialization instruction on the initial setting screen, whereby the message control information Mc stored in the storage unit 54D. And the designated identifier ID3 is set to an initial value.
For example, when “0x0000” is “no broadcast channel contract” and “0x0001” is “broadcast channel contract” as the message control information Mc, the initialization unit 56B sets the message control information Mc to an initial value “ Set to 0x0000 ".

  Further, the initialization unit 56B sets an initial value (for example, a value “0”) that is not used as an identifier in the designated identifier ID3. Thereby, even if the owner of the digital broadcast receiving device 5C changes, the digital broadcast receiving device 5C can be reset to the initial state.

Thus, in the digital broadcast receiving device 5C, the viewer notifies the broadcaster of the value of the individual identifier stored in the digital broadcast receiving device 5C in advance, and the designated identifier managed by the broadcaster is allocated. Thus, since a message unique to the digital broadcast receiving device 5C can be received, a conventional IC card such as a CAS card for each receiving device becomes unnecessary, and the cost can be reduced.
The digital broadcast receiving apparatus 5C can be operated by a program (message receiving program) that causes a general computer to function as each of the means described above.

Here, the digital broadcast receiving device 5C is configured to receive one message from the digital broadcast transmitting device 1C (FIG. 16). However, as described with reference to FIG. It is also possible to extract and receive a message for 5C.
In this case, broadcasting the digital broadcast receiving apparatus 5C, like the digital broadcast receiving apparatus 5A ₂ described in FIG. 7, a storage unit 62, further comprising a CAT processing unit 63 has been described a broadcast receiving unit 50 in FIG. 9 What is necessary is just to replace and comprise the receiving means 50A.
Thereby, the digital broadcast receiving device 5C can extract and receive a message to itself from different messages.

[Operation of digital broadcasting system]
Next, (for configuration, appropriately diagram 16-18 see) Referring to FIG. 19 to be described the operation of the digital broadcasting system S _C according to the third embodiment.

(Identifier registration operation)
First, in the initial setting, the digital broadcast receiving device 5C reads the individual identifier ID2 stored in the storage unit 54D by the individual identifier display unit 551 of the display unit 55B and displays it on the screen (step S10). The screen at this time is a setting screen of the digital broadcast receiving device 5C or a data broadcast screen. Incidentally, the operation of displaying the individual identifier ID2 on the screen of the data broadcast will be omitted since the basic operation and the digital broadcasting system S _C described in FIG. 5 are the same. Then, the viewer notifies the broadcaster of the value of the individual identifier ID2 displayed on the screen together with personal information PD such as a name by telephone, postcard, Internet, or the like (step S11).

  Then, the broadcaster acquires the individual identifier ID2 unique to the digital broadcast receiving device 5C (step S12). Here, the operator of the broadcaster inputs the value of the individual identifier ID2 notified from the viewer by the input means (not shown) in the digital broadcast receiver 5C together with the personal information PD (step S13). Then, the digital broadcast transmitting apparatus 1C uses the individual identifier registration unit 10B to register the value of the individual identifier ID2 input in step S13 in the identifier database of the identifier storage unit 14B in association with the personal information PD (step S14). Through the operations from step S10 to step S14, an identifier (individual identifier ID2) unique to the digital broadcast receiving device 5C is registered in the digital broadcast transmitting device 1C.

(Grouping process)
After the individual identifier ID2 is registered in the identifier database of the identifier storage unit 14B in step S14, the digital broadcast transmitting apparatus 1C requests that the specified identifier ID3 be acquired by the specified identifier request unit 221 of the specified identifier acquisition unit 22 ( A designated identifier request is generated, and the designated identifier request is transmitted to the identifier management device 3 via the communication transmitting / receiving means 21 (step S30).

  Then, the identifier management device 3 receives the specified identifier request via the communication transmitting / receiving unit 30 by the specified identifier request receiving unit 311 of the specified identifier distributing unit 31 (step S31). Thereafter, the identifier management device 3 generates the specified identifier ID3 by the specified identifier generation means 32 (step S32). Furthermore, the identifier management device 3 writes and stores the designated identifier ID3 generated in step S32 in the designated identifier storage unit 33 (identifier database) by the designated identifier generation unit 32 (step S33).

  Then, the identifier management device 3 sends the designated identifier ID3 generated in step S32 by the designated identifier transmission unit 312 of the designated identifier distribution unit 31 to the requested digital broadcast transmission device 1C via the communication transmission / reception unit 30. Transmit (step S34).

  The digital broadcast transmitting apparatus 1C receives the designated identifier ID3 from the identifier management apparatus 3 via the communication transmitting / receiving means 21 by the designated identifier registration means 222 of the designated identifier acquisition means 22 (step S35), and the identifier storage means 14B. Is registered in the identifier database (step S36).

  Then, the digital broadcast transmitting apparatus 1C uses the specified identifier notification generating unit 162 of the individual message generating unit 16B to receive the individual identifier ID2 input in step S13, the message control information Mc, and the specified identifier ID3 received in step S35. The individual message (designated identifier notification [with message control information]) is generated (step S37). For example, it is assumed here that the message control information Mc is “broadcast channel contracted (0x0001)”.

  Then, the digital broadcast transmitting apparatus 1C transmits the individual message (designated identifier notification [with message control information]) generated in step S37 by the broadcast transmitting means 19 to the digital broadcast receiving apparatus 5C via the broadcast wave W. (Step S38).

On the other hand, the digital broadcast receiving device 5C receives the individual message via the broadcast wave W by the broadcast receiving means 50 (step S39). Then, in the digital broadcast receiving device 5C, the designation identifier notification analyzing unit 522 of the individual message processing unit 52B causes the designation identifier notification (with message control information) of the individual message received in step S39 to be sent to the digital broadcast receiving device 5C. The message control information Mc notified by the designation identifier notification is written and stored in the storage means 54D when the message is addressed to the digital broadcast receiving device 5C (step S40), and designated. The designated identifier ID3 notified by the identifier notification is written and stored in the storage unit 54D (step S41).
As a result, “broadcast channel contracted (0x0001)” is written as message control information Mc in the storage means 54D of the digital broadcast receiving apparatus 5C.

(Message display processing)
Thereafter, the digital broadcast transmitting apparatus 1C generates a common message for notifying message information by the message information notification generating unit 151 of the common message generating unit 15 (step S42). For example, here, the common message generating means 15 is an identifier indicating a part of the message control information “no broadcast channel contract (0x0000)” and a specified identifier ID3, and is a target for processing the message information Msg. Message information of “This channel is not subscribed” is addressed to the partial identifier (0x00) for subgrouping the broadcast receiving device 5C and the mask information (0xFF) for specifying a partial area in the designated identifier ID3. A common message (message information notification) is generated. In addition, the digital broadcast transmission device 1C transmits the partial identifier Pid to the message information storage unit 11 in order to switch the digital broadcast reception device 5C that receives the message information notification by the message information notification generation unit 151 of the common message generation unit 15. The update is performed according to the stored update time interval Ui, and each time the update is performed, a common message including the updated partial identifier Pid as a destination is sequentially generated.

  Then, the digital broadcast transmission device 1C transmits the common message (message information notification) generated in step S42 by the broadcast transmission unit 19 to the digital broadcast reception device 5C via the broadcast wave W (step S43).

  On the other hand, the digital broadcast receiving apparatus 5C receives the common message via the broadcast wave W by the broadcast receiving means 50 (step S44). Then, in the digital broadcast receiving device 5C, the message control information Mc included in the message information notification destination of the common message received in step S44 is stored in the storage unit 54D by the message information notification analysis unit 511 of the common message processing unit 51. And the specified identifier ID3 stored in the storage means 54D and the mask information Msk that is the destination of the message information notification are ANDed (ANDed). It is analyzed whether or not the common message is a message addressed to the digital broadcast receiving apparatus 5C depending on whether or not the result matches the partial identifier Pid.

  Then, when the common message received in step S44 is a message addressed to the digital broadcast receiving apparatus 5C, the digital broadcast receiving apparatus 5C processes the message information Msg notified by the message information notification (step S45). For example, when the message control information Mc stored in the storage unit 54D is “No broadcast channel contract (0x0000)”, the message control information Mc that is the destination of the common message is “No broadcast channel contract (0x0000)”. And the specified identifier ID3 stored in the storage means 54D is “0x12345”, the partial identifier Pid is “0x45”, the mask information Msk is “0xFF”, and the content of the common message When the message control information Mc that is “This channel is not contracted” is received, the digital broadcast receiving device 5C displays “This channel is not contracted” on the screen by the message display means 552. indicate. On the other hand, if the message control information Mc stored in the storage means 54D is “broadcast channel contracted (0x0001)”, the logical product operation of the designated identifier ID3 and the mask information Msk that is the destination of the message information notification is performed. Regardless of whether the result of (AND) matches the partial identifier Pid, the message display means 552 ends the operation without displaying “This channel is not contracted” on the screen.

  When the format of the message information notification transmitted as the common message is the format described in FIG. 26A, the digital broadcast receiving device 5C further sets the receiver type PK by the message information notification analyzing unit 511. It is determined whether or not the type of the digital broadcast receiving device 5C stored in the storage unit 54D matches, and only when both match, the message display unit 552 displays a message on the screen.

On the other hand, if the message control information Mc stored in the storage means 54D is “broadcast channel contracted (0x0001)”, the logical product operation of the designated identifier ID3 and the mask information Msk that is the destination of the message information notification is performed. Without determining whether the result of (AND) matches the partial identifier Pid and whether the receiver type PK matches the type of the digital broadcast receiving device 5C stored in the storage unit 54D. The message display means 552 ends the operation without displaying “This channel is not subscribed” on the screen.
Thus, the digital broadcast receiving device 5C is grouped (here, grouped according to the presence / absence of a contract) based on the message control information Mc. Further, among the digital broadcast receiving devices 5C grouped by the message control information Mc, the digital broadcast receiving device 5C that displays a message is subgrouped by the partial identifier Pid and the mask information Msk.
Incidentally, in the digital broadcasting system S _C, in case of performing only the message display process starts from step S42 in the operation of the digital broadcasting system S _C. At this time, if the digital broadcast system has not yet performed steps S10 to S41, the designated identifier ID3 is not stored in the storage means 54D of the digital broadcast receiver 5C. The message control information Mc stored in the storage unit 54D by the message information notification analysis unit 511 of the common message processing unit 51, the message control information Mc that is the destination of the common message transmitted from the digital broadcast transmission device 1C, Only when the result of AND operation of the individual identifier ID2 and the mask information Msk stored in the storage unit 54D matches the partial identifier Pid that is the destination of the common message. , Common message received digital broadcast It determines that the message addressed location 5C, and receiving the common message.

<< Fourth Embodiment >>
[Outline of digital broadcasting system]
Next, with reference to FIG. 20, the outline of the configuration of the digital broadcast system _SD according to the fourth embodiment will be described.

The digital broadcast system _SD includes digital broadcast transmission devices 1D (1), 1D (1),..., An identifier management device 3, and digital devices installed in each home. The broadcast receiving devices 5D (5), 5D (5),... Are received by the digital broadcast receiving device 5D and received by the viewer. System.
This digital broadcasting system _SD individually distributes the identifier (designated identifier) managed by the identifier management device 3 to each of the digital broadcast receiving devices 5D, 5D,..., And uses the designated identifier to use the digital broadcast receiving device 5D. It is possible to send individual message information addressed to.

The digital broadcasting system S _D, using the specified identifier identifier management apparatus 3 manages, the points that make it possible to send a separate message information addressed to the digital broadcast receiving apparatus 5D is a digital broadcasting system S _C (See FIG. 14). However, the digital broadcast system _SD is different in that the digital broadcast receiver 5D generates the individual identifier ID2 notified from the digital broadcast receiver 5D to the digital broadcast transmitter 1D.
An overview of the operation of the digital broadcasting system S _D is omitted because it is similar to the operation of the digital broadcasting system S _C described in FIG 14.

Hereinafter, the configurations and operations of the digital broadcast transmission device 1D and the digital broadcast reception device 5D in the digital broadcast system _{SD according} to the seventh embodiment will be described focusing on differences from the other embodiments. Identifier management apparatus 3 is omitted because it is apparatus the same as the configurations described in the digital broadcasting system S _C.

[Configuration of digital broadcasting transmitter]
First, the configuration of the digital broadcast transmitting apparatus according to the fourth embodiment will be described with reference to FIG. 21 (refer to FIG. 20 as appropriate). Here, the digital broadcast transmitting apparatus 1D includes message information storage means 11, message control information storage means 12, message control information individual update means 13B, identifier storage means 14B, common message generation means 15, and individual message generation. Means 16B, broadcast transmission means 19, identifier registration means 20C, communication transmission / reception means 21, designated identifier acquisition means 22, data broadcast data storage means 17, and data carousel encoding means 18 are provided. .
Here, the configuration other than the identifier registration unit 20C is the same as the configuration of the digital broadcast transmission device 1C described with reference to FIG.

  The identifier registering unit 20C inputs the individual identifier ID2 that is the identifier generated by the digital broadcast receiving device 5D and the personal information PD of the viewer from the outside, and registers them in the identifier database of the storing unit (identifier storing unit 14B). It is. Here, the identifier registration unit 20C includes an individual identifier duplication determination unit 201B and an individual identifier registration unit 202B.

  The individual identifier duplication determination unit 201B determines whether or not the individual identifier ID2 input from the outside is registered (stored) in the identifier storage unit 14B. When the individual identifier ID2 is already registered in the identifier storage unit 14B, the individual identifier duplication determination unit 201B displays that fact on a display device (not shown). On the other hand, when the individual identifier ID2 is not yet registered in the identifier storage unit 14B, the registration instruction is notified to the individual identifier registration unit 202B, and the designation identifier acquisition unit 22 is instructed to acquire the designation identifier ID3. To be notified.

  The individual identifier registration unit 202B registers (stores) the individual identifier ID2 and the viewer's personal information PD in the identifier storage unit 14B. Here, the individual identifier registration unit 202B registers the individual identifier ID2 in the identifier storage unit 14B in association with the personal information PD when the individual identifier duplication determination unit 201B instructs to register the individual identifier ID2.

  Here, the individual identifier registration unit 202B outputs the input individual identifier ID2 to the designated identifier notification generation unit 162 of the individual message generation unit 16B. The output to the designated identifier notification generating means 162 is performed to receive registration from the digital broadcast receiving device 5D and deliver an individual message for notifying the designated identifier ID3 when the individual identifier ID2 is inputted. It is.

In this way, the digital broadcast transmitting apparatus 1D can set an identifier (designated identifier) for each receiving apparatus later without distributing an IC card (CAS card or the like) to the receiving apparatus in advance. Thereby, the cost of IC cards and the cost of managing them can be reduced.
The digital broadcast transmission apparatus 1D can be operated by a program (message transmission program) that causes a general computer to function as each of the above-described means.

In addition, here, the digital broadcast transmission device 1D transmits one message to the digital broadcast reception device 5D (FIG. 22). However, as described in FIG. 6, a plurality of messages are transmitted simultaneously. It does not matter.
In this case, similarly to the digital broadcast transmission apparatus 1A ₂ described with reference to FIG. 6, the digital broadcast transmission apparatus 1D includes a plurality of configurations (message generation means) for generating a common message and individual messages, and further generates each message. What is necessary is just to comprise and comprise the CAT production | generation means 71 which adds the information for identifying the message information which a means produces | generates.

In this case, the message generation means includes message information storage means 11, message control information storage means 12, message control information individual update means 13, identifier storage means 14, common message generation means 15, and individual message generation. What is necessary is just to comprise by the means 16 and the identifier registration means 19B. Then, the common message generation unit 15 and the individual message generation unit 16 identify messages (EMM messages) generated by each message generation unit (not shown) from the outside via an input unit (not shown). The packet identification (PID) of the TS, which is information for this purpose, is input and notified to the broadcast transmission means 19. The broadcast transmission unit 19 multiplexes the CAT generated by the CAT generation unit 71 (FIG. 6) using the MPEG-2 TS system.
As a result, the digital broadcast transmission device 1D can simultaneously transmit a plurality of different messages.

[Configuration of digital broadcast receiver]
Next, the configuration of the digital broadcast receiving apparatus according to the fourth embodiment will be described with reference to FIG. Here, the digital broadcast receiving apparatus 5D includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52B, a data carousel decoding unit 53, a storage unit 54D, a display unit 55B, and an initialization unit. 56B, an individual identifier resetting means 57, a time measuring means 58, and an individual identifier generating means 59. Note that FIG. 22 illustrates only an identifier for identifying the digital broadcast receiving device 5D and a configuration related to message delivery using the identifier, and relates to functions of a general digital broadcast receiving device, for example, content reception. The illustration of the configuration to be performed is omitted.

Here, the broadcast receiving means 50, the common message processing means 51, the individual message processing means 52B, the data carousel decoding means 53, the storage means 54D, the display means 55B, and the initialization means 56B are described with reference to the digital broadcast receiving apparatus described in FIG. Since it is the same as that of 5C, the same code | symbol is attached | subjected and description is abbreviate | omitted.
Further, the individual identifier resetting means 57, the timing means 58, and the individual identifier generating means 59 are the same as the configuration of the digital broadcast receiving apparatus 5B described with reference to FIG. .

As described above, the digital broadcast receiving device 5D generates the individual identifier ID2 from the random temporary identifier ID1, thereby minimizing the possibility that the individual identifier ID2 is duplicated in the individual digital broadcast receiving device 5D.
Further, since the digital broadcast receiving device 5D can receive a message specific to the digital broadcast receiving device 5D by a designated identifier managed by the broadcaster, a conventional IC such as a CAS card for each receiving device can be used. No card is required, and costs can be reduced.
The digital broadcast receiving apparatus 5D can be operated by a program (message receiving program) that causes a general computer to function as each of the means described above.

Here, the digital broadcast receiving apparatus 5D receives one message from the digital broadcast transmitting apparatus 1D (FIG. 21). However, as described in FIG. 7, the digital broadcast receiving apparatus 5D receives a plurality of messages from the digital broadcast receiving apparatus. It may be a form in which a message to 5D is extracted and received.
In this case, broadcasting the digital broadcast receiving apparatus 5D, like the digital broadcast receiving apparatus 5A ₂ described in FIG. 7, a storage unit 62, further comprising a CAT processing unit 63 has been described a broadcast receiving unit 50 in FIG. 7 What is necessary is just to comprise by replacing with the receiving means 50A.
Thereby, the digital broadcast receiving device 5D can extract and receive a message to itself from different messages.

[Operation of digital broadcasting system]
FIG. 24 is a flowchart showing the operation of the digital broadcast system _{SD according} to the fourth embodiment.
Here, the operation from step S10B to step S14, the same operation as the digital broadcast system _{S B} described in FIG 13. Also, the step S30 and subsequent operations are the same as the operation of the digital broadcasting system S _C described in FIG 19. Therefore, here, the same step number is attached and description is abbreviate | omitted.

<< Modification of Fourth Embodiment >>
Next, a modification of the fourth embodiment will be described with reference to FIG. 23 (refer to FIG. 20 as appropriate). In the digital broadcast receiving device 5D of FIG. 22, the individual identifier is generated by using the internal information such as the random number, the current time, and the receiver information. In the digital broadcast receiving device 5D ₂ shown in FIG. 23, by incorporating a unique code (region code) in which the receiving device is installed into the individual identifier, the individual identifier notified to the broadcaster by the viewer is obtained. We decided to shorten the number of letters. Since for a mechanism to reduce the number of individual identifiers to be displayed is the same as that described in the digital broadcasting receiving apparatus 5B ₂ in FIG. 12, a description thereof will be omitted.

[Configuration of digital broadcast receiver]
Hereinafter, with reference to FIG. 23, a configuration of a digital broadcast receiving apparatus which is a modification of the fourth embodiment will be described. Here, the digital broadcast receiving apparatus 5D ₂ includes a broadcast receiving means 50, a common message processing means 51, an individual message processing means 52B, a data carousel decoding means 53, a storage means 54E, a display means 55B, and an initialization. Means 56B, individual identifier resetting means 57, timing means 58, individual identifier generating means 59B, and area code setting means 60 are provided.

Here, the broadcast receiving means 50, the common message processing means 51, the individual message processing means 52B, the data carousel decoding means 53, the display means 55B and the initialization means 56B are the same as the configuration of the digital broadcast receiving apparatus 5B described in FIG. Since they are the same, the same reference numerals are given and description thereof is omitted.
Further, the individual identifier resetting means 57, timer means 58, for individual identifier generation means 59B and the region code setting means 60, are the same as the digital broadcast receiving apparatus 5B ₂ configuration described in FIG. 12, the same reference numerals A description thereof will be omitted.

The storage unit 54E is for storing the digital broadcast receiving apparatus 5D _2-specific information is a common storage medium such as nonvolatile memory (NVRAM). The storage means 54E stores message control information Mc, individual identifier ID2, personal information PD, receiver information Ti, and area code Ac. The message control information Mc, the individual identifier ID2, the personal information PD, and the receiver information Ti are the same as those described in the storage unit 54 of the digital broadcast receiving device 5A in FIG. . Further, abbreviated designated identifier ID3, and area code Ac, are the same as those described in the storage unit 54C of the digital broadcast receiving apparatus 5B ₂ in FIG. 12, a description.

1 Digital broadcast transmitter (message transmitter)
DESCRIPTION OF SYMBOLS 10 Individual identifier registration means 11 Message information storage means 12 Message control information storage means 13 Message control information individual update means 14 Identifier storage means 15 Common message generation means 151 Message information notification generation means 16 Individual message generation means 161 Message control information notification generation means 162 Designated identifier notification generating means 17 Data broadcasting data storage means 18 Data carousel encoding means 19 Broadcast transmission means 20 Identifier registration means 201 Individual identifier duplication determination means 202 Individual identifier registration means 21 Communication transmission / reception means 22 Designated identifier acquisition means 221 Designated identifier Request means 222 Designated identifier registration means 3 Identifier management device 30 Communication transmission / reception means 31 Designated identifier distribution means 311 Designated identifier request reception means 312 Designated identifier transmission means 32 Designation identification Generation means 33 specifies the identifier storage unit 5 digital broadcast receiving apparatus (message reception apparatus)
50 broadcast receiving means 51 common message processing means (common message receiving means)
52 Individual message processing means (individual message receiving means)
521 Message control information notification analysis means 522 Designated identifier notification analysis means 53 Data carousel decoding means 54 Storage means (region code storage means)
55 Display means 551 Individual identifier display means 552 Message display means 553 Designated identifier display means 554 BML decoding means (markup language decoding means)
56 Initializing means 57 Individual identifier resetting means 58 Timing means 59 Individual identifier generating means 591 Random number generating means 592 Temporary identifier generating means 593 Hash function calculating means 594 Regional code adding means 60 Regional code setting means 62 Storage means (restricted reception method identification) Storage means)
63 CAT processing means (message identification table receiving means)
631 CA service descriptor analysis means (service descriptor analysis means)
632 Conditional reception method descriptor analysis means 70 Message generation means 71 CAT generation means (message identification table generation means)
711 CA service descriptor generation means 712 conditional access system descriptor generation means

Claims (2)

A broadcast message transmission means comprising: a common message generation means for generating an EMM common message to be transmitted to the message reception apparatus; and an individual message generation means for generating an EMM individual message to be individually transmitted to each message reception apparatus. Via the message transmission device for transmitting the encoded markup language data, the EMM common message, and the EMM individual message as broadcast data,
Identifier storage means for storing an individual identifier for identifying the message receiving device;
Data storage means for storing the markup language data to which a program for reading out an individual identifier stored in the storage means of the message receiving device and displaying it on a screen is added;
Individual identifier registration means for inputting the individual identifier from the outside and writing and storing the individual identifier in the identifier storage means;
A designated identifier registration means for writing and storing a designated identifier, which is an identifier for individually identifying the message reception device on the broadcaster side, in the identifier storage means,
The individual message generating means includes
Designated identifier notification generating means for generating and transmitting a specified identifier notification having the individual identifier as a message destination and the specified identifier as a message content as the EMM individual message;
A message control information notification to which message control information for designating a group of message receiving devices to be collectively controlled in group units by message information transmitted as the EMM common message is added to the EMM individual addressed to the designated identifier. Message control information notification generating means for generating as a message,
The common message generating means includes
A message transmission apparatus comprising message information notification generation means for generating a message information notification that is an EMM common message having the message control information as a destination and the message information as content. A common message receiving means for receiving an EMM common message transmitted as broadcast data from the message transmitting apparatus according to claim 1 via a broadcast receiving means, and an EMM individual message individually transmitted to each message receiving apparatus In a message receiving device comprising: individual message receiving means for receiving via the broadcast receiving means,
Storage means for storing an individual identifier for identifying the message receiving device;
Decoding means for decoding markup language data to which a program for reading out an individual identifier stored in the storage means and displaying it on a screen from the section data received by the broadcast receiving means;
Markup language decoding means for decoding and visualizing the markup language data decoded by the decoding means,
The markup language decoding means reads out the individual identifier stored in the storage means based on the program added to the markup language data and displays it on the screen,
The individual message receiving means includes
A designation for writing and storing the designated identifier in the storage means when the EMM individual message receives a designated identifier notification having the individual identifier as the message destination and the designated identifier generated on the broadcaster side as the content of the message. An identifier notification analysis means;
The destination of the EMM individual message received via the broadcast receiving means matches the specified identifier stored in the storage means, and the contents are collectively controlled in units of groups by message information transmitted as the EMM common message. Message control information notification analysis for writing and storing the message control information in the storage means when a message control information notification to which message control information for specifying a group of target message receiving devices is added is received as the EMM individual message. Means, and
The common message receiving unit sends message information added to the EMM common message to the message receiving device when the destination of the EMM common message matches the message control information stored in the storage unit. A message receiving device comprising message information notification analyzing means for receiving a message.

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