JP2011044950A - Message transmitter, message receiver and message distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a message transmitter which can individually identify a receiver from a broadcaster without using an IC card and can distribute messages. <P>SOLUTION: The message transmitter 1H includes: an individual identifier-registering means 192D for causing an identifier storage means 14C to write and store an individual identifier for identifying a message receiver; a designated identifier-acquiring means 21 for acquiring a designated identifier generated by the broadcaster from an identifier management device with respect to the individual identifier, and causing the identifier storage means 14C to write and store the acquired designated identifier; and a designated identifier notice-generating means 162C for generating, as an individual message, a designated identifier notice with the individual identifier as an address, the identifier notice detailing the designated identifier and corresponding to the individual identifier, and transmitting the generated individual identifier. After transmitting the designated identifier notice to the message receiver, the individual message-generating means 16C generates the individual message with the designated identifier as the address. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a message transmission device, a message reception device, and a message distribution system 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, processing such as viewing restriction in the receiving device is performed by distributing individual messages from the broadcaster side using the identifier of the IC card distributed to each 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.

  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, a message reception device, and a message distribution system that can be used.

  In order to achieve the above object, according to the present invention, first, a message transmitting device according to claim 1 is provided for a common message generating means for generating a common message that is a common message for the message receiving device, and for each message receiving device. A message transmitting device for transmitting the common message and the individual message as broadcast data via a broadcast transmitting unit, a communication transmitting / receiving unit, and an identifier storage. And an individual identifier duplication determination unit, an individual identifier registration unit, and a designated identifier registration unit, and the individual message generation unit includes a designation identifier notification generation unit.

  According to such a configuration, the message transmission device uses the individual identifier duplication determination unit to transmit, as communication data, the individual identifier generated by the message reception device, the network address of the message reception device, and the message reception via the communication transmission / reception unit. The personal information of the user of the apparatus is received, 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 together with the network address and the personal information into the identifier storage unit. Remember. Thus, individual information (individual identifier, network address, personal information) for specifying individual message receiving devices is registered in the message transmission device on the broadcaster side without duplication.

  In addition, the message transmitting device may notify the communication transmitting / receiving unit that the individual identifier re-requesting unit requests another individual identifier when the individual identifier duplication determining unit determines that the individual identifier is stored. To the message receiver. As a result, the message receiving device generates another individual identifier again.

  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 with 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. Then, it transmits to the network address corresponding to the individual identifier via the communication transmitting / receiving means. 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, in the individual message generating means, transmits the specified identifier notification as an individual message to the message receiving device, then generates an individual message with the specified identifier corresponding to the personal information specified from the outside as a destination, Transmit via the transmission means.
As a result, the message can be individually delivered to the message receiving device using the specified identifier managed by the broadcaster.

  The message transmitting apparatus according to claim 2 is the message transmitting apparatus according to claim 1, wherein the individual message generating means includes message control information notification generating means, and the common message generating means includes message information notification generating means. The configuration.

  According to such a configuration, the message transmission device can specify a group of message reception devices to be processed by predetermined message information transmitted as a common message by the message control information notification generation unit of the individual message generation unit. A message control information notification to which control information is added is generated as an individual message with a specified identifier as a destination, and is transmitted via a communication transmitting / receiving means. 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.

  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. As a result, the message transmitting apparatus can transmit a message to the grouped message receiving apparatuses using a common message.

  Furthermore, the message transmission device according to claim 3 is the message transmission device according to claim 2, wherein the message control information notification generation means stores the broadcast program after the designated identifier is stored in the identifier storage means. A message control information notification to which message control information indicating a group that can be viewed is added is generated as the individual message with the specified identifier as a destination.

  According to such a configuration, the message transmitting device can divide the message receiving device into any group of whether or not the broadcast program can be viewed according to the value of the message control information by the message control information notification generating unit.

  Further, the message receiving device according to claim 4 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. A message transmitting / receiving unit, an individual identifier generating unit, and an individual message receiving unit configured to receive an individual message individually transmitted to each message receiving unit via the broadcast receiving unit. And an individual identifier registration requesting unit, and the individual message receiving unit includes a designated identifier analyzing unit.

  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 apparatus sends the individual identifier generated by the individual identifier generating means, the network address of the message receiving apparatus, and the personal information of the user of the message receiving apparatus by the individual identifier registration requesting means. A request for registration in communication is transmitted as communication data via the communication transmitting / receiving means. Then, when an instruction to request another individual identifier is received from the message transmitting device via the communication transmitting / receiving unit, the individual identifier generating unit is requested to regenerate the individual identifier. As a result, another individual identifier is generated again in the message receiving apparatus.

  The message receiving device is an individual message in which the individual identifier is 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 is the content of the message. When the designation identifier notification is received via the communication transmitting / receiving means, 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.

The message receiving device then sends the individual message to the message receiving device when the destination of the individual message received via the broadcast receiving device matches the specified identifier stored in the storage device. Receive as a message.
Thereby, the message receiving device can receive the individual message by the designated identifier managed by the broadcaster side.

  The message receiving device according to claim 5 is the message receiving device according to claim 4, further comprising message control information notification analyzing means in the individual message receiving means, and message information notification analyzing means in the common message receiving means. It was set as the structure provided.

  According to such a configuration, the message receiving device receives the message control information for designating a group of message receiving devices to be processed by the message control information notification analyzing unit of the individual message receiving unit as a common message. When the added message control information notification is received as an individual message via the communication transmitting / receiving means, the message control information is written and stored in the storage means. As a result, 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, when the message information notification analyzing means of the common message receiving means matches the destination of the common message received as broadcast data via the broadcast receiving means with the message control information stored in the storage means The message information added to the common message is received as a message addressed to the message receiving apparatus. As a result, the message receiving apparatus can receive a message addressed to the same group as a common message.

  Further, the message receiving device according to claim 6 is the message receiving device according to claim 5, further comprising an initialization means.

  According to such a configuration, the message receiving device initializes the message control information and the specified identifier stored in the storage unit by the initialization unit in accordance with an instruction from the outside. Thereby, the message receiving device can initialize the information notified from the message transmitting device.

  The message reception device according to claim 7 is the message reception device according to any one of claims 4 to 6, wherein the individual identifier generation means is generated by the random number generation means as the internal information. A hash value is calculated by a predetermined hash function for at least one of a random number to be measured, a current time measured by a time measuring means, or predetermined receiver information, and the individual identifier is generated. And

  According to such a configuration, the message reception device calculates the hash value by using a predetermined hash function from at least one of the random number, the current time, and the receiver information by the individual identifier generation unit, and generates the individual identifier. Here, the receiver information is, for example, data obtained by quantifying character codes such as the manufacturer name and model name (model number) of the receiving device. As a result, the individual identifier generating means can generate an individual identifier with a reduced possibility of becoming an individual identifier that overlaps with another message receiving apparatus.

  The message delivery system according to claim 8 includes a common message generating unit that generates a common message, and an individual message generating unit that generates an individual message, and the common message and the individual message are transmitted via a broadcast transmission unit. A message transmitting device for transmitting a message as broadcast data, a common message receiving unit for receiving the common message via a broadcast receiving unit, and an individual message receiving unit for receiving the individual message via the broadcast receiving unit A message delivery system for delivering a message, wherein the message sending device is notified in advance by the individual message generating means via a communication transmitting / receiving means. As the message destination After generating an individual message with a specified identifier that is a new identifier for individually identifying the message receiving device on the broadcaster side, and transmitting the message to the message receiving device via the communication transmitting / receiving means, An individual message having the designated identifier as a message destination is generated and transmitted to the message receiving device via the broadcast transmitting unit. The message receiving device includes an individual identifier generating unit and an individual identifier registration request unit. The individual message receiving unit includes a designated identifier analyzing unit, so that a message having the designated identifier as a destination is received.

  According to such a configuration, the message delivery system uses the individual message having the message identifier as the message destination and the message identifier as the new identifier managed by the broadcaster in the message transmission device. Is transmitted to the message receiver. As a result, the specified identifier 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. After that, the message transmitting device generates an individual message with the specified identifier as the message destination and transmits it to the message receiving device. As a result, it is possible to individually transmit a message to the message receiving device using the designated identifier managed by the broadcaster.

  On the other hand, the message reception device generates an individual identifier for individually identifying the message reception device based on the internal information of the message reception device by the individual identifier generation means. Then, the message receiving apparatus sends the individual identifier generated by the individual identifier generating means, the network address of the message receiving apparatus, and the personal information of the user of the message receiving apparatus by the individual identifier registration requesting means. A request for registration in communication is transmitted as communication data via the communication transmitting / receiving means. Then, when an instruction to request another individual identifier is received from the message transmitting device via the communication transmitting / receiving unit, the individual identifier generating unit is requested to regenerate the individual identifier. As a result, another individual identifier is generated again in the message receiving apparatus.

  The message receiving device is an individual message in which the individual identifier is 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 is the content of the message. When the designation identifier notification is received via the communication transmitting / receiving means, 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.

The message receiving device then sends the individual message to the message receiving device when the destination of the individual message received via the broadcast receiving device matches the specified identifier stored in the storage device. Receive as a message.
Thereby, the message receiving device can receive the individual message by the designated identifier managed by the broadcaster side.

  Furthermore, the message delivery system according to claim 9 is the message delivery system according to claim 7, wherein the message transmission device includes message control information notification generation means in the individual message generation means, and message is sent to the common message generation means. The message receiving apparatus is configured to further include a message control information notification analyzing unit in the individual message receiving unit, and a message information notification analyzing unit in the common message receiving unit.

  According to such a configuration, in the message delivery system, the message transmitting device is a message receiving device that is a target for processing predetermined message information transmitted as a common message by the message control information notification generating unit of the individual message generating unit. A message control information notification to which message control information for specifying a group is added is generated as an individual message with a specified identifier as a destination, and is transmitted via a communication transmitting / receiving means. 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.

  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. As a result, the message transmitting apparatus can transmit a message to the grouped message receiving apparatuses using a common message.

  On the other hand, the message receiving device is a message control to which message control information for specifying a group of message receiving devices to be processed by the message control information notification analyzing unit of the individual message receiving unit is specified. When the information notification is received as an individual message via the communication transmitting / receiving means, the message control information is written and stored in the storage means. As a result, 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, when the message information notification analyzing means of the common message receiving means matches the destination of the common message received as broadcast data via the broadcast receiving means with the message control information stored in the storage means The message information added to the common message is received as a message addressed to the message receiving apparatus. As a result, the message receiving apparatus can receive a message addressed to the same group as a common message.

The present invention has the following excellent effects.
According to the first, fourth, and eighth aspects of the invention, the message transmitting device can assign the designated identifier managed by the broadcaster to the individual identifier generated by the message receiving device. 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.
According to the first, fourth, and eighth aspects of the invention, since the specified identifier is transmitted to the message receiving device as the communication data, the message receiving device has surely acquired the specified identifier on the broadcaster side. Can be recognized.

  According to the inventions of the second, fifth, and ninth aspects, in addition to the above-described effects, the message receiving devices can be grouped in arbitrary units based on the message control information. Furthermore, since the message information can be delivered to each grouped message receiving device with the message control information as a destination in a common message, it is more efficient than sending individual messages to each message receiving device. Can deliver messages well.

  According to the third aspect of the present invention, it is possible to specify a group in which a broadcast program can be viewed 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.

  According to the invention described in claim 6, since the information transmitted from the message transmitting device can be initialized in the message receiving device, the message can be easily set by resetting the identifier from the beginning by the initial setting. The user of the receiving device can be changed.

  According to the seventh aspect of the present invention, when generating the individual identifier in the message receiving device, the degree of duplication with other message receiving devices can be kept low. Work such as generating an individual identifier again can be eliminated as much as possible.

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 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 other structure of the digital broadcast receiver (message receiver) which concerns on 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 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 flowchart which shows operation | movement of the digital broadcasting system which concerns on 4th Embodiment. It is a block diagram which shows the structure of the digital broadcasting system which concerns on 5th Embodiment. It is a sequence diagram which shows schematic operation | movement of the digital broadcasting system which concerns on 5th Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 5th Embodiment. It is a block diagram which shows the structure of the identifier management apparatus which concerns on 5th Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 5th Embodiment. It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 5th Embodiment. It is a block diagram which shows the structure of the digital broadcasting system which concerns on 6th Embodiment. It is a sequence diagram which shows schematic operation | movement of the digital broadcasting system which concerns on 6th Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 6th Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 6th Embodiment. It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 6th Embodiment. It is a block diagram which shows the structure of the digital broadcasting system which concerns on 7th Embodiment. It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 7th Embodiment. It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 7th Embodiment. It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 7th Embodiment. It is a block diagram which shows the structure of the digital broadcasting system which concerns on 8th Embodiment (this invention). It is a block diagram which shows the structure of the digital broadcast transmission apparatus (message transmission apparatus) which concerns on 8th Embodiment (this invention). It is a block diagram which shows the structure of the digital broadcast receiver (message receiver) which concerns on 8th Embodiment (this invention). It is a flowchart which shows operation | movement of the digital broadcasting system which concerns on 8th Embodiment (this invention). 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 format of an EMM common message. It is a figure which shows the example of a format of an EMM separate message.

<< 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, each of digital receiver 5A, 5A, ... respect, to be able to meet the desire to send a message information at a time on a group of arbitrary units, each digital reception The 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. Has the function of
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, with reference to FIG. 2, an outline of the operation of the digital broadcast system according to the first embodiment will be described.
First, the viewer notifies the broadcaster of the individual identifier ID2 displayed on the display screen of the digital broadcast receiving device 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). Then, the digital broadcast transmitting apparatus 1A describes message control information as a destination in a common message that is a message common to all the digital broadcast receiving apparatuses 5A, and transmits the message information (step SA3). As a result, even for a common message, only the digital broadcast receiving device 5A grouped with the message control information receives the message information.

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 like conventional CAS card It is not necessary to distribute each IC card individually to each receiving device, and it is not necessary to manage the IC card identifier (card number).
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 broadcast 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, and broadcast transmission means 17 are provided. FIG. 3 illustrates only an identifier for identifying the digital broadcast receiving device 5A and a configuration related to message distribution using the identifier, and relates to a function of a general digital broadcast transmission device, for example, content distribution. 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 receiver 5A, 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 message information Msg stored in the message information storage unit 11 is input via an input unit (not shown), and is read and used by the message information notification generation unit 151 of the common message generation unit 15. 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.

  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 17.

  Here, the message information notification generation unit 151 generates a message (message information notification) having the message control information Mc as a destination and the message information Msg as contents. That is, the message information notification generation unit 151 generates a common message for the digital broadcast receiving device 5A that holds the same message control information Mc.

  Note that the message information notification generation unit 151 may generate a common message by inputting the message control information Mc and the message information Msg via an input unit (not shown), or according to time. Thus, 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 may be read to generate a common message.

  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 17.

  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.

  39, 40, 43, and 44 (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 The format of each message will be described.

  As shown in FIG. 39A, the message information notification generating unit 151 sets message destination as “message control information (Mc)” and message content as “message information (Msg)”. Generate a notification.

Further, as shown in FIG. 40, the message information notification generating unit 151 classifies the digital broadcast receiving device 5A that receives the message information Msg by the receiver type PK in addition to the message information Msg, as shown in FIG. Also good. This receiver type PK indicates the type of the digital broadcast receiving device 5A. For example, as shown in FIG. 40A, "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, as shown in FIG. 40B, the receiver type PK may be assigned a type for each bit. 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.

Such a message information notification format 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. 43, the message information notification generating 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 message code body area of the EMM message body. A common message is generated by describing message information Msg in R2.

  As shown in FIG. 39B, 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 R3 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 R4 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 broadcast transmission unit 17 uses the common message generated by the common message generation unit 15 and the individual message generated by the individual message generation unit 16 as stream data via a transmission antenna (not shown). Is transmitted to the digital broadcast receiver 5A. For example, the broadcast transmission means 17 multiplexes and transmits each message using an MPEG-2 TS (transport stream) system. In addition to the common message and individual message, the broadcast transmission means 17 is similar to a general digital broadcast transmission device, and includes content (broadcast program), program specific information (PSI), program arrangement information (SI). : Service Information) and the like are generated and transmitted to the digital broadcast receiver 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.
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 unit 50, a common message processing unit 51, an individual message processing unit 52, a storage unit 53, a display unit 54, and an initialization unit 55. . 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 means 50 separates the common message and the individual message 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, and the individual message is output to the individual message processing unit 52.

  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 analyzing unit 511 analyzes whether the message information notification (see FIG. 39A) transmitted as the common message is a message addressed to the group including the digital broadcast receiving device 5A, and the group 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 determines that the message control information Mc that is the destination of the message information notification (see FIG. 39A) matches the message control information Mc stored in the storage unit 53. The message information Msg, which is the content of the message information notification, is output to the message display means 542.

  For example, when the message control information Mc stored in the storage unit 53 is “no broadcast channel contract (0x0000)”, the message information notification analysis unit 511 has the value of the message control information as “0x0000” as the destination. When the message information notification is received, the message information that is the content of the message information notification is output to the message display means 542. 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. . On the other hand, in a receiving device group that is subscribed to a broadcast channel, the viewer can view the broadcast program without displaying the message 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. 40, the message information notification analysis unit 511 has the message control information Mc in which the message control information Mc is stored in the storage unit 53. And whether the receiver type PK matches the type of the digital broadcast receiving apparatus 5A. Only when both match, the message that is the content of the message information notification Information is output to the message display means 542. However, it is assumed that the type of the digital broadcast receiving apparatus 5A is stored in the storage unit 53 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. 39B) transmitted as the 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. 39B) matches the individual identifier ID2 stored in the storage unit 53. In addition, the message control information Mc, which is the content of the message control information notification, is written in the storage means 53.
For example, the message control information notification analyzing unit 521 has the same individual identifier as the individual identifier stored in the storage unit 53, 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 53.

  The storage means (control information storage means) 53 stores information unique to the digital broadcast receiving apparatus 5A, and is a general storage medium such as a non-volatile memory (NVRAM: Non Volatile Random Access Memory). This storage means 53 stores at least message control information Mc and individual identifier ID2. Here, personal information PD that is information for specifying the viewer is also stored.

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. 39A). 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 53 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. 42, the individual identifier ID2 may be added with a receiver type PK in addition to the individual number PN and the checksum CRC. This receiver type PK indicates the type of the digital broadcast receiving device 5A. For example, as shown in FIG. 42A, "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 53. However, in a general digital broadcast receiving apparatus, 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 53.

  The display means 54 displays display data on a display device (not shown) such as a liquid crystal display. Here, the display unit 54 includes an individual identifier display unit 541 and a message display unit 542.

The individual identifier display unit 541 displays the individual identifier ID2 stored in the storage unit 53 as display data. The individual identifier display unit 541 reads out the individual identifier ID2 from the storage unit 53 when instructed to display the initial setting screen by an input unit (not shown) such as a remote control device, for example. The value of the individual identifier ID2 is displayed as text data (a character string expressed by decimal numbers) in a predetermined area.
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 unit 542 displays the message information notified from the message information notification analysis unit 511 as display data. When text data is input as message information, the message display unit 542 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 542 reads and displays text data (not shown) corresponding to the message number stored in the storage unit 53 in advance. It is good.
For example, the message display unit 542 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 display means 54 includes program guide display means for generating and displaying an electronic program guide from program identification information (PSI), program arrangement information (SI), etc., content reproduction means for reproducing content (broadcast program), and the like. Although a general digital receiver configuration is provided, illustration is omitted here.

The initialization unit 55 initializes the message control information Mc stored in the storage unit 53. The initialization unit 55 receives message control information Mc stored in the storage unit 53 by receiving an initialization instruction from an input unit (not shown) such as a switch or an initialization instruction on an 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 55 sets the message control information Mc to an initial value “ Set to 0x0000 ". Thus, 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 53 by the individual identifier display unit 541 of the display unit 54 and displays it on the screen (step S10). 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 17 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, in the digital broadcast receiving device 5A, 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 53 (step S18).
As a result, “with broadcast channel contract (0x0001)” is written as message control information Mc in the storage means 53 of the digital broadcast receiver 5A.

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 generation means 151 is a common message (message information notification) with the message control information of “No broadcast channel contract (0x0000)” as the destination and the message information of “This channel is not contracted”. ) Is generated.
Then, the digital broadcast transmitting apparatus 1A transmits the common message (message information notification) generated in step S19 by the broadcast transmitting unit 17 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 53 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. It is analyzed whether or not the common message is a message addressed to the digital broadcast receiving apparatus 5A depending on whether or not they match.

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 unit 53 is “no broadcast channel contract (0x0000)”, the message control information that is the destination of the common message is “no broadcast channel contract (0x0000)”, When the message information which is the content of the common message is the message information notification “This channel is not contracted”, the digital broadcast receiving device 5A displays “This channel is not contracted” on the screen by the message display means 542. Is displayed. On the other hand, if the message control information Mc stored in the storage means 53 is “broadcast channel contracted (0x0001)”, the message display means 542 displays “This channel is not contracted” on the screen. End the operation without
In this way, the digital broadcast receiving device 5A is grouped (here, grouped based on the presence / absence of a contract) based on the message control information Mc.

<< Second Embodiment >>
[Outline of digital broadcasting system]
Next, referring to FIG. 6, the 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 digital broadcasting system _{S B} is a digital broadcast receiving apparatus 5B, 5B, ... in advance unique identifier (individual identifier ID2 _[ID2 1, ID2 _2, ...]) has a digital broadcast receiving apparatus 5B is an individual identifier ID2 Regarding the point that it is possible to transmit the unique message information addressed to the digital broadcast receiving device 5B via the broadcast wave W from the digital broadcast transmitting device 1B by notifying the digital broadcast transmitting device 1B. It is the same as S _A (see FIG. 1). However, the digital broadcasting system S _B from the digital broadcast receiving apparatus 5B, when notifying the individual identifier ID2 in the digital broadcasting transmitting apparatus 1B, telephone line, differences point to notify through the network N using the Internet line or the like is doing.

Hereinafter, the configuration 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, differences between the digital broadcasting system S _{A (see} FIG. 1) according to the first embodiment The explanation will focus on the points.

[Configuration of digital broadcast transmitter]
First, referring to FIG. 7 (refer to FIG. 6 as appropriate), the configuration of the digital broadcast transmitting apparatus according to the second embodiment will be described. Here, the digital broadcast transmitting apparatus 1B 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 13, an identifier storage unit 14, and a common message generation. Means 15, individual message generation means 16, broadcast transmission means 17, and communication transmission / reception means 18 are provided. FIG. 7 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 transmission device, for example, content distribution. The illustration of the configuration to be performed is omitted.

  Here, since the configuration other than the individual identifier registration unit 10B and the communication transmission / reception unit 18 is the same as the configuration of the digital broadcast transmission apparatus 1A described with reference to FIG.

  The individual identifier registration unit 10B receives the individual identifier ID2 that is an identifier unique to the digital broadcast receiving device 5B and the personal information PD of the viewer via the communication transmission / reception unit 18, and stores the identifier in the storage unit (identifier storage unit 14). Register as a database. Further, the individual identifier registration unit 10B outputs the received individual identifier ID2 to the message control information notification generation unit 161 of the individual message generation unit 16.

The communication transmitting / receiving means 18 transmits / receives communication data to / from the digital broadcast receiving device 5B via the network N, and is, for example, a communication control board. Here, the communication transmitting / receiving means 18 receives the individual identifier ID2 and the personal information PD as communication data from the individual digital broadcast receiving apparatus 5B, and receives the received individual identifier ID2 and personal information PD in the individual identifier registration means 10B. Output.
As described above, the digital broadcast transmitting apparatus 1B does not need to manage a unique identifier for each receiving apparatus in advance in the broadcasting company like the card number of the conventional CAS card. In addition, the digital broadcast transmitting apparatus 1B can automate the identifier registration process without registering an identifier (individual identifier ID2) without human intervention such as an operator.

In this digital broadcast transmitting apparatus 1B, the individual identifier registering means 10B, like the individual identifier registering means 10 (see FIG. 3), the individual identifier ID2 and the personal information PD notified from the viewer by telephone, postcard, Internet, etc. May be further provided with a function of writing and storing (registering) the individual identifier ID2 and the personal information PD in the identifier storage means 14 by inputting them through an input means (not shown) such as a keyboard. Thus, the digital broadcast transmission device 1B can perform registration processing by the operator for the digital broadcast reception device 5 that does not have a communication function.
The digital broadcast transmitting apparatus 1B 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 second embodiment will be described with reference to FIG. 8 (refer to FIG. 6 as appropriate). Here, the digital broadcast receiving device 5B includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52, a storage unit 53, a display unit 54B, an initialization unit 55, and an individual identifier registration request. Means 56 and communication transmitting / receiving means 57 are provided. FIG. 8 shows only an identifier for identifying the digital broadcast receiving device 5B 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 display unit 54B, the individual identifier registration request unit 56, and the communication transmission / reception unit 57 is the same as the configuration of the digital broadcast receiving apparatus 5A described with reference to FIG. Is omitted.

  The display means 54B displays display data on a display device (not shown) such as a liquid crystal display. Here, the display unit 54B is configured by omitting the individual identifier display unit 541 from the display unit 54 described in FIG.

The individual identifier registration request means 56 sends a request (identifier registration request) for registering the individual identifier ID2 and the personal information PD stored in the storage means 53 via the communication transmitting / receiving means 57 to the digital broadcast transmitting apparatus 1B. To send to. The individual identifier registration request unit 56 reads the individual identifier ID2 and the personal information PD from the storage unit 53 at the time of initial setting such as channel setting, for example, generates an identifier registration request, and transmits it to the digital broadcast transmission apparatus 1B.
By registering this individual identifier ID2 in the digital broadcast transmitting apparatus 1B, the digital broadcast transmitting apparatus 1B can transmit a message addressed to the individual identifier ID2 to the digital broadcast receiving apparatus 5B.

  Here, the description has been made on the assumption that the personal information PD is stored in the storage unit 53, but the personal information PD is not necessarily stored in the storage unit 53. If the environment is connected to the network N, the personal information PD is input via an input means (not shown) such as a keyboard and stored in the storage means 53 without being stored in the storage means 53. It is good also as notifying a person.

  The communication transmission / reception means 57 transmits / receives communication data to / from the digital broadcast transmission apparatus 1B via the network N, and is, for example, a communication control board. Here, the communication transmitting / receiving unit 57 transmits the identifier registration request input from the individual identifier registration requesting unit 56 to the digital broadcast transmitting apparatus 1B.

  As described above, the digital broadcast receiving device 5B receives the message unique to the digital broadcast receiving device 5B by registering the value of the individual identifier stored in the digital broadcast receiving device 5B in advance in the digital broadcast transmitting device 1B. It becomes possible. Further, a conventional CAS card for each receiving apparatus is not necessary, and the cost can be reduced.

Note that the digital broadcast receiving device 5B may be configured such that the display unit 54B includes the individual identifier display unit 541 similarly to the display unit 54 (see FIG. 4). Thus, when the communication environment is not prepared at the installation location of the digital broadcast receiving device 5B, the viewer can confirm the individual identifier ID2 on the screen and notify the broadcaster.
Further, 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.

[Other configuration of digital broadcast receiver]
Next, another configuration of the digital broadcast receiving apparatus according to the second embodiment will be described with reference to FIG. 9 (refer to FIG. 6 as appropriate). Here, the digital broadcast receiving apparatus 5B ₂ includes the broadcast receiving means 50, the common message processing means 51, the individual message processing means 52B, the storage means 53B, the display means 54B, the initialization means 55, and the individual identifier registration. Requesting means 56B and communication transmitting / receiving means 57 are provided.

Digital broadcast receiving apparatus 5B (see FIG. 8), as the unique identifier, but using a dedicated identifier ID2 by the manufacturer or the like is preset in the storage unit 53, the digital broadcast receiving apparatus 5B ₂ is a unique identifier, a communication transceiver The difference is that the unique identifier of the means 57 is used.
Since the configuration other than the individual message processing unit 52B, the storage unit 53B, and the individual identifier registration request unit 56B is the same as the configuration of the digital broadcast receiving apparatus 5B described with reference to FIG. To do.

Individual message processor (individual message receiving means) 52B analyzes the individual message is a separate message for each digital broadcast receiving apparatus 5B ₂ received via the broadcast receiving unit 50, and performs processing corresponding to the message is there. Here, the individual message processing means 52B includes message control information notification analysis means 521B.

The message control information notification analysis unit 521B has the same function as the message control information notification analysis unit 521 described with reference to FIG. However, the message control information notification analyzing section 521B is transmitted message control information notified as individual messages (see FIG. 39 (b)) is, when analyzing whether the message of the digital broadcast receiving apparatus 5B ₂ destined The difference is that, instead of using the individual identifier stored in the storage means 53, individual information preset in the communication transmitting / receiving means 57 is used.

The individual information set in the communication transmitting / receiving means 57 is, for example, a MAC address of a network interface card (NIC). This MAC address is given a unique address for each NIC. Accordingly, the digital broadcast receiving apparatus 5B ₂ is a unique identifier (individual identifier ID2), and the use of MAC address.

The storage unit 53B is the same as the storage unit 53 described with reference to FIG. 4 except that the individual identifier ID2 is not stored.
The individual identifier registration requesting unit 56B issues a request (identifier registration request) to register the individual information (individual identifier ID2) set in the communication transmitting / receiving unit 57 and the personal information PD stored in the storage unit 53B. Except for transmitting to the digital broadcast transmitting apparatus 1B via the communication transmitting / receiving means 57, it is the same as the individual identifier registration requesting means 56 described in FIG.

In this way, the digital broadcast receiving device 5B ₂ registers the individual information (MAC address) set in advance in the communication transmitting / receiving means 57 of the digital broadcast receiving device 5B ₂ as an individual identifier in the digital broadcast transmitting device 1B. it is possible to receive the digital broadcast receiving apparatus 5B _2-specific messages. Further, a conventional CAS card for each receiving apparatus is not necessary, and the cost can be reduced. Further, it is possible to save the trouble of the manufacturer writing the unique identifier for each receiving device in the storage means 53B.
The digital broadcast receiving apparatus 5B ₂ can be operated by a program that causes a general computer as each means described above (message receiving program).

[Operation of digital broadcasting system]
Next, (for configuration, appropriately diagram 7,8 see) Referring to FIG. 10 to be described the operation of the digital broadcasting system S _B according to the second embodiment.

(Identifier registration operation)
First, the digital broadcast receiving apparatus 5B reads the individual identifier ID2 and the personal information PD stored in the storage unit 53 by the individual identifier registration request unit 56 (step S10B). Then, the digital broadcast receiving device 5B transmits the individual identifier ID2 and the personal information PD read in step S10B to the digital broadcast transmitting device 1B by the communication transmitting / receiving means 57 (step S11B).

On the other hand, the digital broadcast transmitting apparatus 1B receives the individual identifier ID2 and the personal information PD transmitted in step S11B by the communication transmitting / receiving means 18 (step S12B). Then, the digital broadcast transmitting apparatus 1B registers the value of the individual identifier ID2 received in step S12B with the individual identifier registration unit 10B in the identifier database of the identifier storage unit 14 in association with the personal information PD (step S14). Through the operations from step S10B to S14, an identifier (individual identifier ID2) unique to the digital broadcast receiving device 5B is registered in the digital broadcast transmitting device 1B.
The digital broadcast receiving device 5B ₂ described with reference to FIG. 9 is different in that the individual information (MAC address) of the communication transmitting / receiving means 57 is read as the individual identifier ID2 in step S10B, and the subsequent operations are the same.

(Grouping process)
Since the step S15 and subsequent operation (grouping process), is the same as the operation of the digital broadcasting system S _A described in FIG. 5, the description thereof is omitted.

<< Third Embodiment >>
[Outline of digital broadcasting system]
Next, referring to FIG. 11, an outline of a digital broadcasting system S _C configuration according to the third embodiment.

Digital broadcasting system _{S C} has a plurality of broadcasters A, B, ... has a digital broadcast transmitting apparatus 1C (1), 1C (1 ), ... and the digital broadcast receiving apparatus 5C installed in the home or the like (5 , 5C (5),... Is a system in which content (broadcast program) transmitted by digital broadcast from the digital broadcast transmission device 1C is received by the digital broadcast reception device 5C 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 _C is an individual identifier generated by the digital broadcast receiving apparatus 5C, by notifying the digital broadcasting transmission apparatus 1C, the addressed digital broadcast receiving apparatus 5C via the broadcast wave W from the digital broadcast transmission apparatus 1C It is possible to send individual message information.

  The digital broadcast transmission device 1C transmits content to the digital broadcast reception device 5C via the broadcast wave W. Further, the digital broadcast transmitting apparatus 1C has a function of performing duplication confirmation on the individual identifier notified from the digital broadcast receiving apparatus 5C, and transmitting message information addressed to the digital broadcast receiving apparatus 5C using an individual identifier that does not overlap. 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 digital broadcast receiving apparatus 5C receives content via the broadcast wave W. The digital broadcast receiving device 5C has a function of notifying the digital broadcast transmitting device 1C of the individual identifier generated by itself and acquiring message information addressed to the individual identifier transmitted from the digital broadcast transmitting device 1C via the broadcast wave W. Have

Next, with reference to FIG. 12, an outline of the operation of the digital broadcast system according to the third embodiment will be described.
First, the individual identifier generated by the digital broadcast receiving device 5C is displayed on the display screen, and the viewer notifies the broadcaster of the displayed individual identifier ID2 by telephone, postcard, Internet, or the like (step SC1). ). Then, the broadcaster registers the individual identifier ID2 in the digital broadcast transmission device 1C. Then, in the subsequent operations, the digital broadcast transmission device 1C specifies the individual digital broadcast reception device 5C with the individual identifier ID2, and transmits an individual message (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 individual identifier ID2, and transmits message control information for specifying the type of group to the digital broadcast receiving apparatus 5C (step SC2). Then, the digital broadcast transmitting apparatus 1C describes the message control information as a destination in the common message that is a message common to all the digital broadcast receiving apparatuses 5C, and transmits the message information (step SC3). As a result, even for a common message, only the digital broadcast receiving device 5C grouped with the message control information receives the message information.

Thus, the digital broadcasting system S _C according to the third embodiment, to notify the individual identifier ID2 of the digital broadcast receiving apparatus 5C is generated to the broadcasting provider side, individually IC card such as a conventional CAS card There is no need to distribute to each receiving device, and there is no need to manage the identifier (card number) of the IC card.
Hereinafter is a detailed description of the construction and operation of the digital broadcasting system S _C digital broadcast transmission in a device 1C and the digital broadcast receiving apparatus 5C according to the third embodiment.

[Configuration of digital broadcast transmitter]
First, the configuration of the digital broadcast transmitting apparatus according to the third embodiment will be described with reference to FIG. 13 (refer to FIG. 11 as appropriate). Here, the digital broadcast transmitting apparatus 1C includes 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, a common message generation unit 15, and an individual message generation. Means 16, broadcast transmission means 17, and identifier registration means 19 are provided.
Here, since the configuration other than the identifier registration unit 19 is the same as the configuration of the digital broadcast transmitting apparatus 1A described with reference to FIG. 3, the same reference numerals are given and description thereof is omitted.

  The identifier registration means 19 inputs an individual identifier ID2 that is an identifier generated by the digital broadcast receiving device 5C 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 19 includes an individual identifier duplication determination unit 191 and an individual identifier registration unit 192.

The individual identifier duplication determination unit 191 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 191 displays that fact on a display device (not shown). At this time, the operator of the digital broadcast transmitting apparatus 1C notifies the viewer that the individual identifier ID is duplicated by telephone or the like, and has the digital broadcast receiving apparatus 5C generate the individual identifier again. And
On the other hand, if the individual identifier ID2 is not yet registered in the identifier storage unit 14, a registration instruction is notified to the individual identifier registration unit 192.

  The individual identifier registration unit 192 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 192 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 191 instructs to register the individual identifier ID2.

Here, the individual identifier registration unit 192 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 generating means 161 is performed in order to receive registration from the digital broadcast receiving apparatus 5C and distribute an individual message notifying message control information when the individual identifier ID2 is input. Is.
In this way, the digital broadcast transmitting apparatus 1C does not need to manage a unique identifier for each receiving apparatus in advance in the broadcasting company, unlike the card number of the conventional CAS card.
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.

[Configuration of digital broadcast receiver]
Next, referring to FIG. 14 (refer to FIG. 11 as appropriate), the configuration of the digital broadcast receiving apparatus according to the third embodiment will be described. Here, the digital broadcast receiving apparatus 5C includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52, a storage unit 53C, a display unit 54, an initialization unit 55, and an individual identifier resetting. Means 58, timing means 59, and individual identifier generation means 60 are provided. FIG. 14 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 functions 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 53C, the individual identifier resetting unit 58, the timing unit 59, and the individual identifier generation unit 60 is the same as the configuration of the digital broadcast receiving apparatus 5A described with reference to FIG. The description will be omitted.

  The storage unit 53C stores information unique to the digital broadcast receiving device 5C, and is a general storage medium such as a nonvolatile memory (NVRAM). The storage means 53C stores message control information Mc, individual identifier ID2, personal information PD, and receiver information Ti. The message control information Mc and the personal information PD are the same as those described in the storage means 53 of the digital broadcast receiving apparatus 5A in FIG.

The individual identifier ID2 is an identifier for identifying the digital broadcast receiving device 5C. This individual identifier ID2 is generated and written by the individual identifier generating means 60.
The individual identifier ID2 is set to an initial value that is 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 5C from being erroneously received before the initial setting.

  The receiver information Ti is unique information such as the manufacturer and model of the digital broadcast receiving device 5C. For example, the receiver information Ti is data in which character codes such as manufacturer names and model names (model numbers) are digitized. This receiver information Ti is registered in advance by the manufacturer of the digital broadcast receiving apparatus 5C.

  The individual identifier resetting means 58 inputs an instruction for resetting the individual identifier ID2 from the outside. The individual identifier resetting unit 58 is newly instructed to the individual identifier generating unit 60 by receiving a resetting instruction from an input unit (not shown) such as a switch, or resetting 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 60 described later, the individual identifier ID2 may be duplicated in each digital broadcast receiving device 5C. Therefore, the individual identifier resetting means 58 is such that the viewer notifies the broadcaster of the individual identifier ID2 displayed on the screen by the individual identifier display means 541 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 59 is an internal clock that measures the time and holds the current time. For example, the time measuring means 59 measures year / month / day / hour / minute / second as the current time. Here, the current time measured by the time measuring means 59 is read by the individual identifier generating means 60.

  The individual identifier generating means 60 generates an identifier (individual identifier ID2) for identifying the digital broadcast receiving device 5C based on the internal information of the message receiving device 5C. Here, the individual identifier generation unit 60 includes a random number generation unit 601, a temporary identifier generation unit 602, and a hash function calculation unit 603. Here, it is assumed that the individual identifier generating means 60 generates an individual identifier using internal information such as a random number, the current time, and receiver information.

  The random number generation means 601 generates a random number (pseudo random number). The random number generation algorithm in the random number generation means 601 can use a general method, and the method is not limited to a congruent method, an M-sequence, or the like. Here, the random number generation means 601 is set to several bytes (for example, 6 bytes). The random number generated by the random number generator 601 is output to the temporary identifier generator 602.

  The temporary identifier generation unit 602 generates a temporary identifier (temporary identifier ID1) for generating the individual identifier ID2. Here, the temporary identifier generating unit 602 connects the receiver information Ti stored in the storage unit 53C, the current time measured by the time measuring unit 59, and the random number generated by the random number generating unit 601. The temporary identifier ID1 is generated. For example, if 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 generation means 602 has 10 + 10 + 6 + 6 = 32 bytes. A temporary identifier ID1 is generated. The temporary identifier ID1 generated by the temporary identifier generation unit 602 is output to the hash function calculation unit 603.

  The hash function calculation means 603 generates the individual identifier ID2 by calculating the hash value (digest value) of the temporary identifier ID1 generated by the temporary identifier generation means 602. The hash function used in the hash function calculation means 603 is not particularly limited, but is MD5, SHA-1, or the like. For example, the hash function calculation unit 603 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 603 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 603 is written and stored in the storage unit 53C.

  Here, the temporary identifier generation means 602 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 internal information, the temporary identifier generating unit 602 is omitted from the configuration, and the hash function calculating unit 603 generates a hash value for the receiver information Ti, the random number, or the internal information of the current time. Just calculate.

  This individual identifier generating means 60 is assumed to operate at the time of initial setting of the digital broadcast receiving device 5C. The individual identifier generating means 60 is also operated when an instruction to generate a new individual identifier (individual identifier regeneration instruction) is notified from the individual identifier resetting means 58.

  Note that the individual identifier generation means 60 may generate the individual identifier ID2 in the format shown in FIG. In this case, the individual identifier generating unit 60 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 53C.

As described above, the digital broadcast receiving apparatus 5C generates the individual identifier ID2 from the random temporary identifier ID1 generated by the individual identifier generation unit 60 using the receiver information Ti, the random number, and the current time. Thereby, it is possible to suppress the possibility that the individual identifier ID2 is duplicated in each digital broadcast receiving apparatus 5C as much as possible.
Further, since the digital broadcast receiving device 5C can receive a message specific to the digital broadcast receiving device 5C by the individual identifier generated by the digital broadcast receiving device 5C, 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 5C 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, as appropriate reference figures 13 and 14) Referring to FIG. 15 to be described the operation of the digital broadcasting system S _C according to the third embodiment.
First, the digital broadcast receiving device 5C generates the individual identifier ID2 by the individual identifier generation means 60 at the time of initial setting (step S10C). Specifically, the digital broadcast receiving device 5 </ b> C first generates a random number by the random number generation unit 601 of the individual identifier generation unit 60. Then, the digital broadcast receiving apparatus 5C uses the temporary identifier generating unit 602 to receive the receiver information Ti stored in the storage unit 53C, the current time measured by the time measuring unit 59, and the random number generated by the random number generating unit 601. Are combined to generate a temporary identifier ID1. Further, the digital broadcast receiving apparatus 5C generates the individual identifier ID2 by calculating the hash value of the temporary identifier ID1 by the hash function calculating unit 603.

  Then, the digital broadcast receiving device 5C writes and stores the individual identifier ID2 generated in step S10C in the storage unit 53C by the individual identifier generation unit 60 (hash function calculation unit 603) (step S10D).

Then, the digital broadcast receiving apparatus 5C displays the individual identifier ID2 generated in step S10C on the display screen by the individual identifier display unit 541 of the display unit 54 (step S10).
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 _C, in step S11～13, if the individual identifier overlap, the process returns to step S10C, again, the operation from the step of generating an individual identifier is performed.

<< Fourth Embodiment >>
[Outline of digital broadcasting system]
Next, with reference to FIG. 16, 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 transmitters 1D (1), 1D (1),... Possessed by a plurality of broadcasters A, B,..., And digital broadcast receivers 5D (5 ), 5D (5),... Is a system in which content (broadcast program) transmitted by digital broadcast from the digital broadcast transmission device 1D is received by the digital broadcast reception device 5D and viewed by the viewer.

This digital broadcast system _SD notifies the individual identifier generated by the digital broadcast receivers 5D, 5D,... To the digital broadcast transmitter 1D, thereby receiving the digital broadcast from the digital broadcast transmitter 1D via the broadcast wave W. It is the same as the digital broadcasting system S _C (see FIG. 11) that it is possible to transmit unique message information addressed to the device 5D. However, the digital broadcast system _SD is different in that the digital broadcast receiving device 5D notifies the digital broadcast transmitting device 1D of the individual identifier ID2 via the network N using a telephone line, an Internet line, or the like. is doing.

Hereinafter, the configuration and operation of the fourth digital broadcasting transmitting apparatus 1D in a digital broadcasting system S _D according to the embodiment and a digital broadcast receiving apparatus 5D, differences between digital broadcasting system S _{C (see} FIG. 11) according to the third embodiment The explanation will focus on the points.

[Configuration of digital broadcast transmitter]
First, the configuration of the digital broadcast transmission apparatus according to the fourth embodiment will be described with reference to FIG. 17 (refer to FIG. 16 as appropriate). Here, the digital broadcast transmitting apparatus 1D includes 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, a common message generation unit 15, and an individual message generation. Means 16, broadcast transmission means 17, communication transmission / reception means 18, and identifier registration means 19B are provided. FIG. 17 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 a function of a general digital broadcast transmission device, for example, content delivery. The illustration of the configuration to be performed is omitted.

  Here, the configuration other than the communication transmitting / receiving unit 18 and the identifier registering unit 19B is the same as the configuration of the digital broadcast transmitting apparatus 1C described with reference to FIG.

  The communication transmitting / receiving means 18 transmits / receives communication data to / from the digital broadcast receiving device 5D via the network N, and is, for example, a communication control board. Here, the communication transmitting / receiving means 18 receives the individual identifier ID2 and the personal information PD of the user of the digital broadcast receiving apparatus 5D as communication data from each digital broadcast receiving apparatus 5D, and outputs them to the identifier registration means 19B. .

  The identifier registration unit 19B receives the individual identifier ID2 that is an identifier generated by the digital broadcast receiving device 5D through the communication transmission / reception unit 18, and also stores the personal information PD together with the personal information PD received through the communication transmission / reception unit 18. It is registered (registered in the identifier database) in the identifier storage means 14). Here, the identifier registration unit 19B includes an individual identifier duplication determination unit 191B, an individual identifier registration unit 192B, and an individual identifier re-request unit 193B.

  The individual identifier duplication determining unit 191B determines whether or not the individual identifier ID2 received via the communication transmitting / receiving unit 18 is registered (stored) in the identifier storage unit 14. If it is determined that the individual identifier ID2 is not yet registered in the identifier storage unit 14, the individual identifier duplication determination unit 191B outputs an instruction to register the individual identifier ID2 to the individual identifier registration unit 192B. On the other hand, when it is determined that the individual identifier ID2 has already been registered in the identifier storage unit 14, the individual identifier duplication determination unit 191B issues an instruction to request (re-request) another individual identifier ID2 as an individual identifier re-request. Output to means 193B.

  The individual identifier registration unit 192B registers (stores) the individual identifier ID2 in the identifier storage unit 14. Here, the individual identifier registration unit 192B corresponds to the individual information PD received via the communication transmitting / receiving unit 18 when the individual identifier duplication determination unit 191B has received an instruction to register the individual identifier ID2. At the same time, it is registered in the identifier storage means 14. Here, the personal information PD is, for example, the name, address, telephone number, etc. of the viewer.

  Here, the individual identifier registration unit 192 </ b> B outputs the received individual identifier ID <b> 2 to the message control information notification generation unit 161 of the individual message generation unit 16. The output to the message control information notification generating means 161 is performed in order to receive registration from the digital broadcast receiving device 5D and distribute an individual message for notifying message control information when the individual identifier ID2 is input. Is.

  The individual identifier re-requesting unit 193B requests the individual identifier ID2 from the digital broadcast receiving device 5D. Here, the individual identifier re-requesting unit 193B gives an instruction to request another individual identifier ID2 when the individual identifier duplication determining unit 191B receives a request for re-requesting the individual identifier ID2, and the communication transmitting / receiving unit 18 To the digital broadcast receiver 5D. As a result, another individual identifier ID2 is retransmitted from the digital broadcast receiving apparatus 5D, and if it is not duplicated, it is registered in the identifier storage means 14.

As described above, the digital broadcast transmitting apparatus 1D does not need to manage a unique identifier for each receiving apparatus in advance in the broadcasting company like the card number of the conventional CAS card. Also, the digital broadcast transmission device 1D can automate the identifier registration process without registering an identifier (individual identifier ID2) without human intervention.
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.

[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 device 5D includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52, a storage unit 53C, a display unit 54B, an initialization unit 55, and an individual identifier registration request. Means 56C, communication transmitting / receiving means 57, timing means 59, and individual identifier generation means 60 are provided. FIG. 18 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 a function of a general digital broadcast receiving device, for example, content reception. The illustration of the configuration to be performed is omitted.
Since the configuration other than the individual identifier registration requesting unit 56C and the communication transmitting / receiving unit 57 is the same as the configuration of the digital broadcast receiving device 5C described with reference to FIG. 14, the same reference numerals are given and description thereof is omitted.

  The individual identifier registration request means 56C sends a request (identifier registration request) for registering the individual identifier ID2 and the personal information PD stored in the storage means 53C via the communication transmitting / receiving means 57 to the digital broadcast transmitting apparatus 1D. To send to. The individual identifier registration requesting unit 56C, for example, reads the individual identifier ID2 and the personal information PD from the storage unit 53C at the time of initial setting such as channel setting, generates an identifier registration request, and transmits it to the digital broadcast transmission device 1D.

  Further, the individual identifier registration requesting unit 56C instructs the individual identifier generating unit 60 to generate the individual identifier ID2 when the digital broadcast transmitting apparatus 1D requests resetting of the individual identifier ID2. Then, the individual identifier registration request unit 56C sends a request (identifier registration request) for registering the new individual identifier ID2 and the personal information PD at the stage when the new individual identifier ID2 is generated. Is transmitted to the digital broadcast transmission apparatus 1D.

The communication transmission / reception means 57 transmits / receives communication data to / from the digital broadcast transmission apparatus 1D via the network N, and is, for example, a communication control board. Here, the communication transmitting / receiving means 57 transmits the identifier registration request input from the individual identifier registration requesting means 56C to the digital broadcast transmitting apparatus 1D via the network N, and the digital broadcast transmitting apparatus 1D requests resetting of the identifier. If so, the fact is output to the individual identifier registration requesting means 56C.
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.

[Operation of digital broadcasting system]
Next, the operation of the digital broadcast system _{SD according} to the fourth embodiment will be described with reference to FIG. 19 (refer to FIGS. 17 and 18 as appropriate for the configuration).

  First, the digital broadcast receiving device 5D generates the individual identifier ID2 by the individual identifier generating means 60 at the time of initial setting (step S10E). Then, the digital broadcast receiving apparatus 5D transmits the individual identifier ID2 generated in step S10E and the personal information PD stored in the storage unit 53C by the individual identifier registration request unit 56C via the communication transmission / reception unit 57. It transmits to the apparatus 1D (step S10F).

On the other hand, the digital broadcast transmitting apparatus 1D receives the individual identifier ID2 and the personal information PD transmitted in step S10F by the communication transmitting / receiving means 18 (step S12B).
Then, the digital broadcast transmitting apparatus 1D determines whether or not the individual identifier ID2 received in step S12B is registered (stored) in the identifier storage unit 14 by the individual identifier duplication determination unit 191B of the identifier registration unit 19B (duplication). Confirmation) (step S13B).

  At this time, if the individual identifier ID2 is already registered, the individual identifier re-requesting unit 193B transmits an instruction to request another individual identifier ID2 to the digital broadcast receiving device 5D via the communication transmitting / receiving unit 18. . Then, the digital broadcast receiving device 5D again generates the individual identifier ID2 by the individual identifier generation unit 60, and retransmits the individual identifier ID2 by the individual identifier registration request unit 56C (duplication confirmation processing: step S11C).

Thereafter, in the digital broadcast receiving apparatus 5D, the individual identifier generating unit 60 registers the individual identifier ID2 generated (or regenerated) in step S10E in the storage unit 53C (step S11D). On the other hand, in the digital broadcast transmitting apparatus 1D, the individual identifier registration unit 192B of the identifier registration unit 19 registers the individual identifier ID2 in the identifier storage unit 14 in association with the personal information PD (step S14).
Incidentally, the step S15 and subsequent operations are the same as the operation of the digital broadcasting system S _C described in FIG 15.

With the above operation, the digital broadcasting system _SD can transmit a message to the identifier of each receiving device without giving an IC card to the receiving device in advance.

«Fifth embodiment»
[Outline of digital broadcasting system]
Next, with reference to FIG. 20, the configuration outline of a digital broadcasting system S _E according to the fifth embodiment.

The digital broadcast system _SE includes digital broadcast transmission devices 1E (1), 1E (1),..., An identifier management device 3, and digital devices installed in each home. The broadcast receiving devices 5E (5), 5E (5),... Are received by the digital broadcast receiving device 5E and received by the viewer. System.
The digital broadcasting system S _E is a digital broadcast transmitting apparatus 1E has an identifier (specified identifier) identifier management apparatus 3 manages digital broadcast receiving apparatus 5E, 5E, ... delivered separately for each, using the designated identifier Thus, individual message information addressed to the digital broadcast receiver 5E can be transmitted. This designated identifier is different from the individual identifier held or generated by the digital receiver described in the first to fourth 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 1E transmits content to the digital broadcast reception device 5E via the broadcast wave W. In addition, the digital broadcast transmission device 1E has a function of transmitting the designated identifier acquired from the identifier management device 3 to the digital broadcast reception device 5E with the individual identifier notified from the digital broadcast reception device 5E as a destination. Further, the digital broadcast transmission device 1E has a function of grouping individual digital broadcast reception devices 5E and transmitting message information to a specific group.

  The identifier management device 3 manages individual identifiers for each of the digital broadcast receiving devices 5E, 5E,. 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 5E notified from the digital broadcast transmission device 1E. 1E has a function to transmit.

  The digital broadcast receiver 5E receives content via the broadcast wave W. In the digital broadcast receiving device 5E, an individual identifier ID2 is set in advance. This individual identifier ID2 is notified to the digital broadcast transmission device 1E, and the digital broadcast reception device 5E holds the designated identifier distributed from the digital broadcast transmission device 1E to the individual identifier via the broadcast wave W. It has a function of acquiring message information addressed to a specified identifier transmitted from the transmitting apparatus 1E 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 1E.

Next, with reference to FIG. 21, an outline of the operation of the digital broadcast system according to the fifth embodiment will be described.
First, the viewer notifies the broadcaster of the individual identifier ID2 displayed on the display screen of the digital broadcast receiving device 5E by telephone, postcard, Internet, or the like (step SE1). Then, when the broadcaster registers the individual identifier ID2 in the digital broadcast transmission device 1E, the digital broadcast transmission device 1E acquires a new identifier (designated identifier ID3) from the identifier management device 3 (step SE2). Then, the digital broadcast transmitting device 1E transmits the specified identifier ID3 to the digital broadcast receiving device 5E by an individual message with the individual identifier ID2 as the destination (step SE3). Then, in the subsequent operation, the digital broadcast transmission device 1E specifies the individual digital broadcast reception device 5E with the designated identifier ID3 and transmits the individual message.

  Also, when the broadcaster wants to manage the digital broadcast receiving device 5E by dividing it into a predetermined group, for example, when the digital broadcast receiving device 5E is grouped according to the presence / absence of a broadcast channel contract, viewing area, etc., the digital broadcast transmitting device 1E 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 5E (step SE4). Then, the digital broadcast transmitting device 1E describes message control information as a destination in a common message that is a message common to all the digital broadcast receiving devices 5E, and transmits the message information (step SE5). As a result, even for a common message, only the digital broadcast receiving device 5E grouped with the message control information receives the message information.

Thus, the digital broadcasting system S _E according to the fifth embodiment is different from the individual identifier ID2 sent from the digital broadcast receiving apparatus 5E, 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 1E in a digital broadcasting system S _E, the configuration and operation of the identifier management apparatus 3 and the digital broadcast receiving apparatus 5E will be described in detail according to the fifth embodiment.

[Configuration of digital broadcast transmitter]
First, the configuration of a digital broadcast transmitting apparatus according to the fifth embodiment will be described with reference to FIG. 22 (refer to FIG. 20 as appropriate). Here, the digital broadcast transmitting apparatus 1E includes an individual identifier registration unit 10C, 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, broadcast transmission means 17, communication transmission / reception means 20, and designated identifier acquisition means 21 are provided.

  The configuration other than the individual identifier registration unit 10C, the message control information individual update unit 13B, the identifier storage unit 14B, the individual message generation unit 16B, the communication transmission / reception unit 20 and the designated identifier acquisition unit 21 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 registering unit 10C inputs the individual identifier ID2 that is an identifier unique to the digital broadcast receiving device 5E and the personal information PD of the viewer, and registers them as an identifier database in the storage unit (identifier storage unit 14B). For example, the individual identifier registration unit 10C 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 1E. 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 10C outputs an instruction to acquire the specified identifier ID3 to the specified identifier acquisition unit 21 when the individual identifier ID2 and the personal information PD of the viewer are input.

  The message control information individual updating means 13B is for individually updating the message control information Mc stored in the digital broadcast receiving device 5E. Here, the message control information individual updating means 13B inputs the designated identifier 1D3 of the digital broadcast receiving apparatus 5E 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 device 5E.

  The identifier storage unit 14B stores the individual identifier ID2 and the personal information PD registered by the individual identifier registration unit 10C in association with the specified identifier ID3 acquired by the specified identifier acquisition unit 21. 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 unit 16B generates a message (individual message) to be individually transmitted to each digital broadcast receiving device 5E. 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 generating unit 161B generates a message for transmitting the message control information Mc to the digital broadcast receiving device 5E as an individual message. The individual message generated by the message control information notification generation unit 161B is output to the broadcast transmission unit 17.

  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 generation unit 161B generates an individual message (message control information notification) for the digital broadcast receiving device 5E that holds the designated identifier ID3. When the message control information Mc is transmitted to the digital broadcast receiving device 5E, the individual digital broadcast receiving devices 5E are grouped according to the value of the message control information.

  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.

  Further, 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 5E 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 5E.

The designated identifier notification generating unit 162 generates a message for transmitting the designated identifier ID3 to the digital broadcast receiving device 5E as an individual message. The individual message generated by the designated identifier notification generation unit 162 is output to the broadcast transmission unit 17.
Here, the designated identifier notification generating unit 162 generates a message (designated identifier notification) having the individual identifier ID2 as a destination and the specified identifier ID3 as contents. That is, the designated identifier notification generating unit 162 generates an individual message (specified identifier notification) for the digital broadcast receiving device 5E holding the individual identifier ID2. By transmitting this designated identifier ID3 to the digital broadcast receiving device 5E, it is possible to distribute subsequent individual messages with the designated identifier ID3 managed by the broadcaster as the destination.

  In this case, the designated identifier notification generating unit 162 receives the individual message (designated identifier notification) when the individual identifier ID2 and the personal information PD are registered by the individual identifier registering unit 10C and the designated identifier ID3 is obtained by the designated identifier obtaining unit 21. 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. 41, 43, and 44 (see FIG. 22 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. 41A, the message information notification generation unit 151 sets message destination as “message control information (Mc)” and message content as “message information (Msg)”. Generate a notification.
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. 43, the message information notification generating 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 message code body area of the EMM message body. A common message is generated by describing message information Msg in R2.

  As shown in (b-1) of FIG. 41 (b), 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. 41B, the designated identifier notification generating unit 162 sets the message destination as “individual identifier (ID2)” and the content of the message 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) that is an individual message is generated.

The individual message in FIG. 41 (b) 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. 44, in the identifier information region R3 of the EMM message body (1, 2,..., N) of the EMM individual message section structure, An individual message is generated by describing the destination of the message and describing the content of the message in the message code area R4 of the EMM message body (1, 2,..., N).
Returning to FIG. 22, the description of the configuration of the digital broadcast transmitting apparatus 1E will be continued.

  The communication transmitting / receiving unit 20 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 unit 20 transmits a request (specified identifier request) for acquiring the specified identifier ID3 input from the specified identifier acquiring unit 21 to the identifier management device 3 as communication data, and returns a response from the identifier management device 3 The designated identifier ID3 is received as communication data. The received designated identifier ID3 is output to the designated identifier acquisition means 21.

  The designated identifier obtaining unit 21 obtains the designated identifier ID3 from the identifier management device 3 via the communication transmitting / receiving unit 20. Here, the designated identifier acquisition unit 21 includes a designated identifier request unit 211 and a designated identifier registration unit 212.

  The designated identifier request unit 211 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 request unit 211 generates a designated identifier request message when the instruction to acquire the designated identifier ID3 is notified from the individual identifier registration unit 10C, and via the communication transmission / reception unit 20, A designated identifier request is transmitted to the identifier management device 3.

The designated identifier registration unit 212 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 212 registers the designated identifier ID3 in the identifier storage unit 14B at the stage of obtaining the designated identifier ID3 via the communication transmitting / receiving unit 20.
Since the designated identifier registration unit 212 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 5E using the designated identifier ID3, the individual identifier ID2 corresponding to the designated identifier ID3 is stored. May be initialized or invalidated.

  Alternatively, when registering both the designated identifier ID3 and the individual identifier ID2, the designated identifier registration unit 212 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.

  In addition, here, the designated identifier registration unit 212 outputs the designated identifier ID3 to the individual message generation unit 16B when acquiring the designated identifier ID3 in order to notify the digital broadcast receiving device 5E of the designated identifier ID3. I will do it.

Thus, the digital broadcast transmitting apparatus 1E 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 1E can be operated by a program (message transmission program) that causes a general computer to function as each of the means described above.

[Configuration of identifier management device]
Next, the configuration of the identifier management apparatus according to the fifth embodiment will be described with reference to FIG. 23 (refer to FIG. 20 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 unit 30 transmits / receives communication data to / from the digital broadcast transmitting apparatus 1E 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 1E, to the designated identifier request receiving means 311. Further, the communication transmitting / receiving unit 30 transmits the specified identifier ID3 output from the specified identifier transmitting unit 312 to the requested digital broadcast transmitting device 1E as communication data.

  The designated identifier distribution unit 31 distributes (transmits) the designated identifier ID3 to the requested digital broadcast transmission device 1E 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 1E 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 1E via the communication transmitting / receiving unit 30.

The designated identifier generating means 32 generates a unique identifier (specified identifier ID3) for each digital broadcast transmitting apparatus 1E. 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 a designated identifier ID3 and outputs it to the designated identifier transmitting means 312 when a request for generating 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 1E 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 fifth embodiment will be described with reference to FIG. 24 (refer to FIG. 20 as appropriate). Here, the digital broadcast receiving apparatus 5E includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52C, a storage unit 53D, a display unit 54C, and an initialization unit 55B. . FIG. 24 illustrates only an identifier for identifying the digital broadcast receiving device 5E 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 52C, the storage unit 53D, the display unit 54C, and the initialization unit 55B 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) 52C analyzes an individual message that is an individual message for each digital broadcast receiving device 5E input via the broadcast receiving means 50, and performs processing according to the message. is there. Here, the individual message processing unit 52C includes a message control information notification analysis unit 521C and a designated identifier notification analysis unit 522.

  The message control information notification analysis unit 521C analyzes whether or not the message control information notification (see FIGS. 41B and 41B-1) transmitted as an individual message is a message addressed to the digital broadcast receiving device 5E. When the message is addressed to the digital broadcast receiving apparatus 5E, the message control information notified by the message control information notification is processed.

Specifically, the message control information notification analyzing unit 521C has the specified identifier ID3 stored in the storage unit 53D as the specified identifier that is the destination of the message control information notification (see FIGS. 41B and 41B-1). Is matched, the message control information which is the content of the message control information notification is written in the storage means 53D.
For example, the message control information notification analyzing unit 521C has the same message identifier as the specified identifier stored in the storage unit 53D, 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 53D.

  The designated identifier notification analyzing unit 522 analyzes whether or not the designated identifier notification (see FIGS. 41B and 41B-2) transmitted as the individual message is a message addressed to the digital broadcast receiving device 5E. When the message is addressed to the digital broadcast receiving apparatus 5E, 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. 41 (b) and (b-2)) with the individual identifier ID2 stored in the storage unit 53D. In this case, the specified identifier that is the content of the specified identifier notification is written in the storage means 53D. As shown in FIGS. 41B and 41B, 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 53D. In addition to writing to the means 53D, message control information which is the content of the designated identifier notification is written to the storage means 53D.

  The storage unit 53D stores information unique to the digital broadcast receiving device 5E, and is a general storage medium such as a nonvolatile memory (NVRAM). The storage means 53D stores message control information Mc, a specified identifier ID3, an individual identifier ID2, and personal information PD. Information other than the designated identifier ID3 is the same as that described in the storage means 53 of the digital broadcast receiving apparatus 5A in FIG.

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

  Of the information stored in the storage unit 53D, the specified identifier ID3 is set to an initial value that is 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 5E from being erroneously received before the initial setting.

  The display means 54C displays display data on a display device (not shown) such as a liquid crystal display. Here, the display unit 54C includes an individual identifier display unit 541, a message display unit 542, and a designated identifier display unit 543. Since the configuration other than the designated identifier display unit 543 is the same as that described in the display unit 54 of the digital broadcast receiving apparatus 5A in FIG.

The designated identifier display unit 543 displays the designated identifier ID3 stored in the storage unit 53D as display data. The designated identifier display unit 543 reads out the designated identifier ID3 from the storage unit 53D when instructed to display the initial setting screen by an input unit (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 broadcasting company 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.
The designated identifier display unit 543 functions after the designated identifier ID3 is registered in the storage unit 53D.

The initialization unit 55B initializes the message control information Mc and the designated identifier ID3 stored in the storage unit 53D. The initialization unit 55B receives message control information Mc stored in the storage unit 53D by receiving an initialization instruction from an input unit (not shown) such as a switch or an initialization instruction on an initial setting screen. 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 55B sets the message control information Mc to an initial value “ Set to 0x0000 ".

  Further, the initialization unit 55B sets an initial value (for example, a value “0”) that is not used as an identifier in the designated identifier ID3. Thereby, even when the owner of the digital broadcast receiving device 5E changes, the digital broadcast receiving device 5E can be reset to the initial state.

Thus, in the digital broadcast receiving device 5E, the viewer notifies the broadcaster of the value of the individual identifier stored in the digital broadcast receiving device 5E in advance, and the designated identifier managed by the broadcaster is allocated. Thus, since a message specific to the digital broadcast receiving device 5E can be received, a conventional IC card such as a CAS card for each receiving device is not necessary, and the cost can be reduced.
The digital broadcast receiving apparatus 5E 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 22-24 see) Referring to FIG. 25 to be described the operation of the digital broadcasting system S _E according to the fifth embodiment.

(Identifier registration operation)
First, in the initial setting, the digital broadcast receiving device 5E reads out the individual identifier ID2 stored in the storage unit 53D by the individual identifier display unit 541 of the display unit 54C and displays it on the screen (step S10). 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 an individual identifier ID2 unique to the digital broadcast receiving device 5E (step S12). Here, the operator of the broadcasting company inputs the value of the individual identifier ID2 notified from the viewer by the input means (not shown) in the digital broadcast receiving device 5E together with the personal information PD (step S13). Then, the digital broadcast transmitting apparatus 1E registers the value of the individual identifier ID2 input in step S13 with the individual identifier registration unit 10C 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 5E is registered in the digital broadcast transmitting device 1E.

(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 1E uses the specified identifier request unit 211 of the specified identifier acquisition unit 21 to request that the specified identifier ID3 be acquired ( 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 20 (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 1E via the communication transmission / reception unit 30. Transmit (step S34).

  The digital broadcast transmitting apparatus 1E receives the designated identifier ID3 from the identifier management apparatus 3 via the communication transmitting / receiving means 20 by the designated identifier registration means 212 of the designated identifier acquisition means 21 (step S35), and the identifier storage means 14B. Is registered in the identifier database (step S36).

  The digital broadcast transmitting apparatus 1E then receives the individual identifier ID2 input in step S13 by the designation identifier notification generation unit 162 of the individual message generation unit 16B, the message control information Mc, and the designation 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 transmission device 1E transmits the individual message (designated identifier notification [with message control information]) generated in step S37 by the broadcast transmission means 17 to the digital broadcast reception device 5E via the broadcast wave W. (Step S38).

On the other hand, the digital broadcast receiver 5E receives the individual message via the broadcast wave W by the broadcast receiving means 50 (step S39). Then, in the digital broadcast receiving device 5E, the designation identifier notification analysis unit 522 of the individual message processing unit 52C causes the designation identifier notification (with message control information) of the individual message received in step S39 to be sent to the digital broadcast reception device 5E. Whether or not the message is a message is analyzed. When the message is addressed to the digital broadcast receiving apparatus 5E, the message control information Mc notified by the designation identifier notification is written and stored in the storage means 53D (step S40). The designated identifier ID3 notified by the identifier notification is written and stored in the storage means 53D (step S41).
As a result, “with broadcast channel contract (0x0001)” is written as message control information Mc in the storage means 53D of the digital broadcast receiver 5E.

  Thereafter, the digital broadcast transmitting apparatus 1E 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 generation means 15 is a common message (message information notification) having the message control information of “No broadcast channel contract (0x0000)” as the destination and the message information of “This channel is not contracted”. Is generated.

  Then, the digital broadcast transmission device 1E transmits the common message (message information notification) generated in step S42 by the broadcast transmission means 17 to the digital broadcast reception device 5E via the broadcast wave W (step S43).

  On the other hand, the digital broadcast receiving device 5E receives the common message via the broadcast wave W by the broadcast receiving means 50 (step S44). Then, the digital broadcast receiving apparatus 5E uses the message control notification Mc stored in the storage unit 53D to store the message information notification destination of the common message received in step S44 by the message information notification analysis unit 511 of the common message processing unit 51. It is analyzed whether or not the common message is a message addressed to the digital broadcast receiving device 5E depending on whether or not they match.

Then, when the common message received in step S44 is a message addressed to the digital broadcast receiving device 5E, the digital broadcast receiving device 5E processes the message information Msg notified by the message information notification (step S45). For example, when the message information Msg stored in the storage means 53D is “No broadcast channel contract (0x0000)”, the message control information that is the destination of the common message is “No broadcast channel contract (0x0000)”. When the message information which is the message content “This channel is not subscribed” is received, the digital broadcast receiving device 5E displays “This channel is not subscribed” on the screen by the message display means 542. indicate. On the other hand, if the message information Msg stored in the storage means 53C is “broadcast channel contracted (0x0001)”, the message display means 542 does not display “This channel is not contracted” on the screen. End the operation.
In this way, the digital broadcast receiving device 5E is grouped (here, grouped based on the presence / absence of a contract) based on the message control information Mc.

<< Sixth Embodiment >>
[Outline of digital broadcasting system]
Next, referring to FIG. 26, the configuration outline of a digital broadcasting system S _F according to the sixth embodiment.

The digital broadcast system _SF includes digital broadcast transmission devices 1F (1), 1F (1),..., An identifier management device 3, and digital installed in each home. The broadcast receiving devices 5F (5), 5F (5),... Are received by the digital broadcast receiving device 5F for content (broadcast programs) transmitted from the digital broadcast transmitting device 1F and viewed by the viewer. System.

The digital broadcasting system S _F is a digital broadcast transmitting apparatus 1F is an identifier (specified identifier) identifier management apparatus 3 manages digital broadcast receiving apparatus 5F, 5F, ... and delivered separately for each, using the designated identifier Thus, it is the same as the digital broadcast system S _E (see FIG. 20) that individual message information addressed to the digital broadcast receiving device 5F can be transmitted. However, the digital broadcasting system S _F from the digital broadcast receiver 5F, when notifying the individual identifier ID2 which is the destination for delivering the specified identifier to the digital broadcasting transmission apparatus 1F, and, from the digital broadcast transmission apparatus 1F, designated identifier ID3 Is notified through the network N ₂ using a telephone line, an Internet line, or the like.

An overview of the operation of the digital broadcasting system S _F is substantially the same as the operation of the digital broadcasting system S _E described in FIG 21, as shown in FIG. 27, in step SF1, the digital broadcast receiver 5F, transmits communication (network _{N 2)} by a separate identifier ID2 in the digital broadcasting transmitting apparatus 1F, in step SF3, the digital broadcast transmission apparatus 1F, that transmits the specified identifier ID3 are different by communication (network _{N 2)} .

Hereinafter, the configuration and operation of the digital broadcasting system S digital broadcast transmission apparatus in _F 1F and digital broadcast receiving apparatus 5F according to the sixth embodiment, the difference between the digital broadcasting system S _{E (see} FIG. 20) according to the sixth embodiment The explanation will focus on the points. Identifier management apparatus 3 will be omitted digital broadcasting system S _E and is for the same configuration.

[Configuration of digital broadcast transmitter]
First, the configuration of the digital broadcast transmitting apparatus according to the sixth embodiment will be described with reference to FIG. 28 (refer to FIG. 26 as appropriate). Here, the digital broadcast transmitting apparatus 1F includes an individual identifier registration unit 10D, 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 14C, and a common message generation. Means 15, individual message generation means 16C, broadcast transmission means 17, communication transmission / reception means 20, designated identifier acquisition means 21, and second communication transmission / reception means 22 are provided. Note that FIG. 28 illustrates only an identifier for identifying the digital broadcast receiving device 5F 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.

  Here, the configuration other than the individual identifier registration unit 10D, the identifier storage unit 14C, the individual message generation unit 16C, and the second communication transmission / reception unit 22 is the same as the configuration of the digital broadcast transmission device 1E described in FIG. The same reference numerals are given and the description is omitted.

The individual identifier registration unit 10D receives the individual identifier ID2 that is an identifier unique to the digital broadcast receiving device 5F and the personal information PD of the viewer via the second communication transmitting / receiving unit 22, and transmits the individual identifier ID2 Along with the network address Adr of the broadcast receiving device 5F, it is registered (stored) in the identifier storage means 14C.
The individual identifier registration unit 10D outputs an instruction to acquire the specified identifier ID3 to the specified identifier acquisition unit 21 when the individual identifier ID2 and the personal information PD of the viewer are received.

  The identifier storage unit 14C associates the individual identifier ID2 registered by the individual identifier registration unit 10D, the personal information PD and the network address Adr of the digital broadcast receiving device 5F with the specified identifier ID3 acquired by the specified identifier acquiring unit 21. It is a general storage medium such as a hard disk. The identifier storage unit 14C creates a database by associating personal information PD such as a viewer's name, address, and telephone number with 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 14C until the individual identifier ID2 and the designated identifier ID3 are registered.

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

The message control information notification generation unit 161C has the same function as the message control information notification generation unit 161B described in FIG. However, the message control information notification generation unit 161C the generated individual message (message control information notification), the second communication transmitting and receiving means 22, via the network N _2, points different from that sent to the digital broadcast receiving apparatus 5F Yes. That is, the message control information notification generation unit 161C sends an individual message (message control information notification) to the digital broadcast receiving device 5F ahead of the network address Adr corresponding to the designated identifier ID3 associated with the identifier storage unit 14C. Send.

The designated identifier notification generating unit 162C has the same function as the designated identifier notification generating unit 162 described with reference to FIG. However, designated identifier notification generation unit 162C is generated individually message (designated identifier notification), the second communication transmitting and receiving means 22, via the network N _2, the point of transmission is different from the digital broadcast receiving apparatus 5F. That is, the designated identifier notification generating unit 162C transmits an individual message (designated identifier notification) to the digital broadcast receiving device 5F ahead of the network address Adr corresponding to the individual identifier ID2 associated with the identifier storage unit 14C. .

  The specified identifier notification generating unit 162C may transmit the specified identifier notification by the second communication transmitting / receiving unit 22 and delete the individual identifier ID2 from the identifier storage unit 14C at the timing when the reception confirmation notification is received. This is because the digital broadcast receiving device 5F can be specified by the designated identifier ID3 in the subsequent operations.

  The individual message generation unit 16C does not need to transmit all individual messages as communication data. The message control information notification generated by the message control information notification generation unit 161C or the designation identifier generated by the designation identifier notification generation unit 162C. Individual messages other than notifications, such as e-mails, may be transmitted as broadcast data via the broadcast transmission means 17.

The second communication transceiver unit 22 through the network N _2, be one for transmitting and receiving communication data between the digital broadcast receiver 5F, for example, a communication control board. Here, the second communication transceiver unit 22, the individual messages generated by individual message generation unit 16C, and transmits the communication data via the network N ₂ to the digital broadcast receiving apparatus 5F. Further, the second communication transmitting / receiving means 22 receives the individual identifier ID2 and the personal information PD for registration from the digital broadcast receiving apparatus 5F, and outputs them to the individual identifier registration means 10D.

As described above, the digital broadcast transmitting apparatus 1F does not need to manage a unique identifier for each receiving apparatus in advance in the broadcasting company like the card number of the conventional CAS card. Also, the digital broadcast transmitting apparatus 1F can automate the identifier registration process without registering an identifier (individual identifier ID2) without human intervention.
The digital broadcast transmission apparatus 1F 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 sixth embodiment will be described with reference to FIG. 29 (refer to FIG. 26 as appropriate). Here, the digital broadcast receiving apparatus 5F includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52D, a storage unit 53D, a display unit 54D, an initialization unit 55B, and an individual identifier registration request. Means 56D and communication transmitting / receiving means 57B are provided. Note that FIG. 29 illustrates only an identifier for identifying the digital broadcast receiving device 5F 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 52D, the display unit 54D, the individual identifier registration request unit 56D, and the communication transmitting / receiving unit 57B is the same as the configuration of the digital broadcast receiving device 5E described in FIG. The same reference numerals are given and the description is omitted.

  The individual message processing means (individual message receiving means) 52D analyzes an individual message that is an individual message for each digital broadcast receiving device 5F input via the communication transmitting / receiving means 57B, and performs processing according to the message. is there. Here, the individual message processing unit 52D includes a message control information notification analysis unit 521D and a designated identifier notification analysis unit 522D.

The message control information notification analysis unit 521D has the same function as the message control information notification analysis unit 521C described with reference to FIG. However, the message control information notification analyzing unit 521D is the communication transmitting and receiving means 57B individual message (message control information notification), that receives, via the network N ₂ are different.

The designated identifier notification analyzing unit 522D has the same function as the designated identifier notification analyzing unit 522 described with reference to FIG. However, designated identifier notification analyzing unit 522D is the communication transmitting and receiving means 57B individual messages (specified identifier notification), that receives, via the network N ₂ are different.

  The display means 54D displays display data on a display device (not shown) such as a liquid crystal display. Here, the display unit 54D is configured by omitting the individual identifier display unit 541 from the display unit 54C described in FIG.

  The individual identifier registration request unit 56D sends a request (identifier registration request) for registering the individual identifier ID2 and the personal information PD stored in the storage unit 53D via the communication transmission / reception unit 57B to the digital broadcast transmission device 1F. To send to. For example, the individual identifier registration requesting unit 56D reads the individual identifier ID2 from the storage unit 53D at the time of initial setting such as channel setting and generates an identifier registration request using the personal information PD that is also set at the time of initial setting. Then, the data is transmitted to the digital broadcast transmission device 1F.

  The individual identifier registration request unit 56D monitors whether an individual message (designated identifier notification) is notified after the identifier registration request is transmitted, or whether the designated identifier ID3 is registered in the storage unit 53D. If notification or registration is not performed within a predetermined time, the identifier registration request may be transmitted again. This ensures that the specified identifier is registered.

  In addition, the individual identifier registration request unit 56D, like the individual identifier registration request unit 56B described in FIG. 9, includes, for example, the MAC address of the network interface card (NIC) as the individual information set in the communication transmitting / receiving unit 57B. May be used as the individual identifier ID2.

Communications transceiver unit 57B via the network N _2, be one for transmitting and receiving communication data between the digital broadcast transmission apparatus 1F, for example, a communication control board. Here, the communication transceiver means 57B outputs the individual message received via the network N ₂ to the individual message processing unit 52D. The communication transceiver unit 57B transmits the identifier registration request inputted from the individual identifier registration request unit 56D, via the network N ₂ to a digital broadcast transmitting apparatus 1F.
The digital broadcast receiving apparatus 5F can be operated by a program (message receiving program) that causes a general computer to function as each of the above-described means.

[Operation of digital broadcasting system]
Next, (for configuration, appropriately diagram 29 see) Referring to FIG. 30 to be described the operation of the digital broadcasting system S _F according to the sixth embodiment.

(Identifier registration operation)
First, the digital broadcast receiving device 5F reads the individual identifier ID2 and the personal information PD stored in the storage unit 53D by the individual identifier registration request unit 56D (step S10B). Then, the digital broadcast receiving device 5F transmits the individual identifier ID2 and the personal information PD read in step S10B to the digital broadcast transmitting device 1F by the communication transmitting / receiving means 57B (step S11B).

  On the other hand, the digital broadcast transmitting apparatus 1F receives the individual identifier ID2 and the personal information PD transmitted in step S11B by the second communication transmitting / receiving means 22 (step S12B). Then, the digital broadcast transmission device 1F uses the individual identifier registration unit 10D to associate the individual identifier ID2 received in step S12B, the personal information PD, and the network address Adr of the digital broadcast reception device 5F that transmitted the individual identifier ID2. At the same time, it is registered in the identifier database of the identifier storage means 14C (step S14). Through the operations from step S10B to S14, an identifier (individual identifier ID2) unique to the digital broadcast receiving device 5F is registered in the digital broadcast transmitting device 1F.

Incidentally, the step S30 and subsequent operations are the same as the operation of the basic digital broadcasting system S _E described in FIG 25. However, the digital broadcast transmitting apparatus 1F is different in that the individual message is transmitted by communication (network) in step S38B.
By the above operation, the digital broadcasting system S _F without imparting IC card in advance the receiving apparatus, and managing the identifier of each receiving apparatus, it is possible to send a message.

<< Seventh Embodiment >>
[Outline of digital broadcasting system]
Next, with reference to FIG. 31, the configuration outline of a digital broadcasting system S _G according to a seventh embodiment.

The digital broadcast system _SG includes digital broadcast transmission devices 1G (1), 1G (1),..., An identifier management device 3 and digital devices installed in each household. The broadcast receiving devices 5G (5), 5G (5),... Are received by the digital broadcast receiving device 5G and received by the viewer. System.
The digital broadcasting system S _G is an identifier (specified identifier) identifier management apparatus 3 manages digital broadcast receiving apparatus 5G, 5G, ... delivered separately for each, using the designated identifier, the digital broadcast receiving apparatus 5G It is possible to send individual message information addressed to.

The digital broadcasting system S _G, using the specified identifier managed by the identifier management apparatus 3, the point that makes it possible to send a separate message information of the digital broadcast receiving apparatus destined 5G is a digital broadcasting system S _E (See FIG. 21). However, the digital broadcasting system S _G is a discrete identifier ID2 for notifying the digital broadcasting receiving apparatus 5G into digital broadcast transmitting apparatus 1F, except that it generates the digital broadcast receiving apparatus 5G are different.
An overview of the operation of the digital broadcasting system S _G is omitted because it is similar to the operation of the digital broadcasting system S _E described in FIG 21.

Hereinafter, a digital broadcast transmitting apparatus 1G and the digital broadcast receiver 5G configuration and operation of the digital broadcasting system S _G according to the seventh embodiment will be described focusing on differences from the other embodiments. Identifier management apparatus 3 will be omitted digital broadcasting system S _E and is for the same configuration.

[Configuration of digital broadcast transmitter]
First, the configuration of the digital broadcast transmission device according to the seventh embodiment will be described with reference to FIG. 32 (see FIG. 31 as appropriate). Here, the digital broadcast transmission apparatus 1G 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 17, identifier registration means 19C, communication transmission / reception means 20, and designated identifier acquisition means 21 are provided.
Here, the configuration other than the identifier registration unit 19C is the same as the configuration of the digital broadcast transmission device 1E described with reference to FIG.

  The identifier registering unit 19C inputs an individual identifier ID2 that is an identifier generated by the digital broadcast receiving device 5G 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 19C includes an individual identifier duplication determination unit 191C and an individual identifier registration unit 192C.

  The individual identifier duplication determination unit 191C 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 191C 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 instruction for registration is notified to the individual identifier registration unit 192C, and the designation identifier acquisition unit 21 is instructed to acquire the designation identifier ID3. To be notified.

  The individual identifier registration unit 192C 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 192C registers the individual identifier ID2 in association with the personal information PD in the identifier storage unit 14B when the individual identifier duplication determination unit 191C instructs to register the individual identifier ID2.

  Here, the individual identifier registration unit 192C 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 5E and deliver an individual message notifying the designated identifier ID3 when the individual identifier ID2 is inputted. It is.

In this way, the digital broadcast transmitting apparatus 1G 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 1G 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, with reference to FIG. 33 (refer to FIG. 31 as appropriate), the configuration of the digital broadcast receiving apparatus according to the seventh embodiment will be described. Here, the digital broadcast receiving device 5G includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52C, a storage unit 53E, a display unit 54C, an initialization unit 55B, and an individual identifier resetting. Means 58, timing means 59, and individual identifier generation means 60 are provided. Note that FIG. 33 illustrates only an identifier for identifying the digital broadcast receiving device 5G 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 52C, the display means 54C, and the initialization means 55B are the same as the configuration of the digital broadcast receiving apparatus 5E described in FIG. The description will be omitted.
Further, the individual identifier resetting means 58, the timing means 59, and the individual identifier generating means 60 are the same as the configuration of the digital broadcast receiving apparatus 5C described with reference to FIG. .
The various information stored in the storage means 53E is obtained by adding the receiver information Ti stored in the storage means 53C in FIG. 14 to the various information stored in the storage means 53D in FIG.

As described above, the digital broadcast receiving device 5G 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 5G.
Further, since the digital broadcast receiving device 5G can receive a message unique to the digital broadcast receiving device 5G by a designated identifier managed by the broadcaster, an IC such as a conventional CAS card for each receiving device can be received. No card is required, and costs can be reduced.
The digital broadcast receiving apparatus 5G 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]
Figure 34 shows a flowchart illustrating the operation of a digital broadcasting system S _G according to a seventh embodiment.
Here, the operation from step S10C to step S14, the same operation as the digital broadcasting system _{S C} described in FIG 15. Also, the step S30 and subsequent operations are the same as the operation of the digital broadcasting system S _E described in FIG 25. Therefore, here, the same step number is attached and description is abbreviate | omitted.

<< Eighth Embodiment >>
[Outline of digital broadcasting system]
Next, with reference to FIG. 35, an outline of a digital broadcasting system S _H configuration according to the eighth embodiment (the present invention).

The digital broadcast system _SH includes digital broadcast transmission devices 1H (1), 1H (1),..., An identifier management device 3, and digital devices installed in each home. The broadcast receiving devices 5H (5), 5H (5),... Are received by the digital broadcast receiving device 5H for content (broadcast programs) transmitted from the digital broadcast transmitting device 1H and viewed by the viewer. System.

This digital broadcast system _SH uses an identifier (designated identifier) managed by the identifier management device 3 to transmit individual message information addressed to the digital broadcast reception device 5H. This is the same as the system _SF (see FIG. 26). However, the digital broadcasting system S _H is the individual identifier ID2 of notifying the digital broadcasting transmitting apparatus 1H from the digital broadcast receiver 5H, except that it generates the digital broadcast receiving apparatus 5H is different.

An overview of the operation of the digital broadcasting system S _H is omitted because it is similar to the operation of the digital broadcasting system S _F described in FIG 27.

Hereinafter, the configuration and operation of the digital broadcast transmitting apparatus 1H and digital broadcast receiving apparatus 5H in a digital broadcasting system S _H according to the eighth embodiment will be described focusing on differences from the other embodiments. Identifier management apparatus 3 will be omitted digital broadcasting system S _E and is for the same configuration.

[Configuration of digital broadcast transmitter]
First, the configuration of a digital broadcast transmitting apparatus according to the eighth embodiment will be described with reference to FIG. 36 (refer to FIG. 35 as appropriate). Here, the digital broadcast transmission apparatus 1H includes message information storage means 11, message control information storage means 12, message control information individual update means 13B, identifier storage means 14C, common message generation means 15, and individual message generation. Means 16C, broadcast transmission means 17, identifier registration means 19D, communication transmission / reception means 20, designated identifier acquisition means 21, and second communication transmission / reception means 22 are provided. Note that FIG. 36 illustrates only an identifier for identifying the digital broadcast receiving device 5H 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.
Here, since the configuration other than the identifier registration unit 19D is the same as the configuration of the digital broadcast transmission device 1F described with reference to FIG. 28, the same reference numerals are given and description thereof is omitted.

  The identifier registration unit 19D receives the individual identifier ID2 that is the identifier generated by the digital broadcast receiving device 5H from the second communication transmitting / receiving unit 22 and registers it in the identifier database of the storage unit (identifier storage unit 14C). Here, the identifier registration unit 19D includes an individual identifier duplication determination unit 191D, an individual identifier registration unit 192D, and an individual identifier re-request unit 193D.

Individual identifier overlap determination unit 191D is individual identifier ID2 received by the second communication transmitting and receiving means 22 through the network N ₂ is intended to determine whether or not it is registered (stored) in the identifier storage unit 14C. When it is determined that the individual identifier ID2 is not yet registered in the identifier storage unit 14C, the individual identifier duplication determination unit 191D outputs an instruction to register the individual identifier ID2 to the individual identifier registration unit 192D. On the other hand, when it is determined that the individual identifier ID2 has already been registered in the identifier storage unit 14C, the individual identifier duplication determination unit 191D issues an instruction to request (re-request) another individual identifier ID2 as an individual identifier re-request. Output to means 193D.

  The individual identifier registration unit 192D registers (stores) the individual identifier ID2, the personal information PD, and the network address Adr of the digital broadcast receiving device 5H that has transmitted the individual identifier ID2 in the identifier storage unit 14C. Here, the individual identifier registration unit 192D associates the individual identifier ID2, the personal information PD, and the network address Adr and stores the identifier when the individual identifier duplication determination unit 191D instructs to register the individual identifier ID2. Register in the means 14C.

  Here, the individual identifier registration unit 192D outputs the individual identifier ID2 to the designated identifier notification generation unit 162C of the individual message generation unit 16C. The output to the designated identifier notification generating unit 162C is performed in order to receive the registration to the digital broadcast receiving device 5H and distribute the individual message notifying the designated identifier ID3 when the individual identifier ID2 is received. .

As described above, the digital broadcast transmitting apparatus 1H does not need to manage a unique identifier for each receiving apparatus in advance in the broadcasting company like the card number of the conventional CAS card. In addition, the digital broadcast transmitting apparatus 1H can automate the identifier registration process without registering an identifier (individual identifier ID2) without human intervention.
The digital broadcast transmitting apparatus 1H 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 eighth embodiment will be described with reference to FIG. Here, the digital broadcast receiving apparatus 5H includes a broadcast receiving unit 50, a common message processing unit 51, an individual message processing unit 52D, a storage unit 53E, a display unit 54D, an initialization unit 55B, and an individual identifier registration request. Means 56C, communication transmission / reception means 57B, timing means 59, and individual identifier generation means 60 are provided. FIG. 37 illustrates only an identifier for identifying the digital broadcast receiving device 5H 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 configuration other than the storage unit 53E, the individual identifier registration request unit 56C, the timing unit 59, and the individual identifier generation unit 60 is the same as the configuration of the digital broadcast receiving device 5F described with reference to FIG.
Further, the individual identifier registration requesting means 56C, the timing means 59, and the individual identifier generating means 60 are the same as the configuration of the digital broadcast receiving apparatus 5D described with reference to FIG. Are the same. Therefore, here, the same reference numerals are given and description thereof is omitted. The digital broadcast receiving device 5H 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]
Figure 38 shows a flowchart illustrating the operation of a digital broadcasting system S _H according to the eighth embodiment.
Here, the operation from step S10E to step S14 is the same as the operation of the digital broadcast system _SD described in FIG. Also, the step S30 and subsequent operations are the same as the operation of the digital broadcasting system S _F described in FIG 30. Therefore, here, the same step number is attached and description is abbreviate | omitted.

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 Broadcast transmitting means 18 Communication transmitting / receiving means 19 Identifier registering means 191 Individual identifier duplication determining means 192 Individual identifier registering means 193 Individual identifier re-requesting means 20 Communication transmitting / receiving means 21 Designated identifier obtaining means 211 Designated identifier requesting means 212 Designated identifier registration means 22 Second communication transmission / reception 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 Constant identifier generating unit 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 Storage means (control information storage means)
54 Display means 541 Individual identifier display means 542 Message display means 55 Initialization means 56 Individual identifier registration request means 57 Communication transmission / reception means 58 Individual identifier resetting means 59 Timekeeping means 60 Individual identifier generation means 601 Random number generation means 602 Temporary identifier generation means 603 Hash function calculation means

Claims (9)

A common message generating means for generating a common message that is a common message for the message receiving apparatus; and an individual message generating means for generating an individual message to be individually transmitted to each message receiving apparatus. In a message transmission device that transmits a message as broadcast data via a broadcast transmission means,
Communication transmitting / receiving means for transmitting / receiving communication data to / from the message receiving device;
Identifier storage means for storing an identifier for identifying the message receiving device;
Via the communication transmitting / receiving means, as the communication data, an individual identifier generated by the message receiving device, a network address of the message receiving device, and personal information of a user of the message receiving device are received, Individual identifier duplication determination means for determining whether or not an individual identifier is stored in the identifier storage means;
In this individual identifier duplication determination means, when it is determined that the individual identifier is not stored, the individual identifier registration means for writing and storing the individual identifier together with the network address and the personal information in the identifier storage means,
When the individual identifier duplication determination unit determines that the individual identifier is stored, the individual identifier to be transmitted to the message receiving device via the communication transmitting / receiving unit to request that another individual identifier is requested Re-request means;
A designated identifier registration means for writing and storing a designated identifier, which is a new identifier for individually identifying the message receiving device on the broadcaster side, in association with the individual identifier in the identifier storage means,
The individual message generating means generates a specified identifier notification having the individual identifier as a message destination and a specified identifier corresponding to the individual identifier as the content of the message as the individual message, and a network address corresponding to the individual identifier. Comprises a designated identifier notification generating means for transmitting via the communication transmitting / receiving means,
The individual message generating means generates the individual message addressed to the designated identifier corresponding to personal information designated from outside after transmitting the designated identifier notification as the individual message to the message receiving device, A message transmitting device, wherein the message is transmitted via a transmitting means. The individual message generating means sends a message control information notification to which a message control information specifying a group of message receiving devices to be processed as predetermined message information transmitted as the common message is added, and the specified identifier as a destination. The message control information notification generating means for generating as the individual message and transmitting via the communication transmitting / receiving means,
The said common message production | generation means is equipped with the message control information as a destination, The message information notification production | generation means which produces | generates the message information notification which is a common message which made the said message information the content is provided. Message sending device.   The message control information notification generating means sends a message control information notification to which message control information indicating a group that can view a broadcast program is added to the designated identifier as a destination after the designated identifier is stored in the identifier storage means. The message transmission apparatus according to claim 2, wherein the message transmission apparatus generates the message as the individual message. A common message reception unit that receives a common message, which is a common message to the message reception device transmitted as broadcast data from the message transmission device, via the broadcast reception unit, and is individually transmitted to each message reception device. In the message receiving device comprising the individual message receiving means for receiving the individual message via the broadcast receiving means,
Communication transmission / reception means for transmitting / receiving communication data to / from the message transmission device;
An individual identifier generating means for generating an individual identifier for individually identifying the message receiving device based on internal information of the message receiving device;
A request for registering the individual identifier generated by the individual identifier generating means, the network address of the message receiving apparatus, and the personal information of the user of the message receiving apparatus in the message transmitting apparatus, and the communication transmitting / receiving means When the instruction to request another individual identifier is received from the message transmitting device via the communication transmitting / receiving unit, the individual identifier generating unit receives the individual identifier. And an individual identifier registration request means for requesting regeneration of
The individual message receiving means sends a specified identifier notification, which is an individual message having the individual identifier as a message destination and a specified identifier generated for the individual identifier on the broadcaster side as the content of the message. A designated identifier analyzing means for writing and storing the designated identifier in the storage means when received via
The individual message receiving means, when the destination of the individual message received via the broadcast receiving means matches the specified identifier stored in the storage means, the individual message as a message addressed to the message receiving device. A message receiving device characterized by receiving. The individual message receiving means transmits, as the individual message, a message control information notification added with message control information specifying a group of message receiving devices to be processed as message information transmitted as the common message. A message control information notification analyzing means for writing and storing the message control information in the storage means when received via the means;
The common message receiving means is added to the common message when the destination of the common message received as the broadcast data via the broadcast receiving means matches the message control information stored in the storage means. 5. The message receiving apparatus according to claim 4, further comprising message information notification analyzing means for receiving the received message information as a message addressed to the message receiving apparatus.   The message receiving apparatus according to claim 5, further comprising an initialization unit that initializes the message control information and the designated identifier stored in the storage unit according to an instruction from the outside.   The individual identifier generating means has a predetermined hash for at least one of the random number generated by the random number generating means, the current time measured by the time measuring means, or predetermined receiver information as the internal information. The message receiving apparatus according to any one of claims 4 to 6, wherein a hash value is calculated by a function to generate the individual identifier. A message transmission device comprising: a common message generation means for generating a common message; and an individual message generation means for generating an individual message; and a broadcast transmission means for transmitting the common message and the individual message as broadcast data; A message receiving device comprising: a common message receiving means for receiving the common message via a receiving means; and an individual message receiving means for receiving the individual message via the broadcast receiving means. A message delivery system for delivering,
In the individual message generating means, the message transmitting apparatus uses the individual identifier of the message receiving apparatus notified in advance via the communication transmitting / receiving means as a message destination, and individually identifies the message receiving apparatus on the broadcaster side After generating an individual message with a specified identifier, which is a new identifier, as a message content and transmitting it to the message receiving device via the communication transmitting / receiving means, an individual message with the specified identifier as a message destination is generated. Transmitting to the message receiving device via the broadcast transmitting means,
The message receiving device includes:
Based on internal information of the message receiving device, an individual identifier generating means for generating the individual identifier for individually identifying the message receiving device;
A request for registering the individual identifier generated by the individual identifier generating means, the network address of the message receiving apparatus, and the personal information of the user of the message receiving apparatus in the message transmitting apparatus is sent to the communication transmitting / receiving means. When the notification that the individual identifiers are duplicated is received from the message transmitting device via the communication transmitting / receiving means, the individual identifier generating means An individual identifier registration requesting means for requesting regeneration,
The individual message receiving means, as an individual message, sends a specified identifier notification having the individual identifier as a message destination and a specified identifier generated for the individual identifier on the broadcaster side as the content of the message. A designated identifier analyzing means for writing and storing the designated identifier in the storage means when received via
The individual message receiving means, when the destination of the individual message received via the broadcast receiving means matches the specified identifier stored in the storage means, the individual message as a message addressed to the message receiving device. A message delivery system characterized by receiving. The message transmission device includes:
A message control information notification in which message control information for designating a group of message receiving devices to be processed for processing predetermined message information transmitted as the common message is sent to the individual message generating means, and the designated identifier as a destination The message control information notification generating means for generating as the individual message and transmitting via the communication transmitting / receiving means,
The common message generating means includes message information notification generating means for generating a message information notification that is a common message with the message control information as a destination and the message information as contents.
The message receiving device includes:
Message control information notification analyzing means for writing and storing the message control information in the storage means when the individual message receiving means receives the message control information notification as the individual message via the communication transmitting / receiving means. In addition,
Added to the common message receiving means when the destination of the common message received as the broadcast data via the broadcast receiving means matches the message control information stored in the storage means. 9. The message delivery system according to claim 8, further comprising message information notification analysis means for receiving the received message information as a message addressed to the message receiving device.

Images