JP2003163920A - Digital broadcast system, ic card therein, electronic money using method, receiving terminal, electronic money using program and computer readable recording medium with records of electronic money using program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast system allowing the settlement using electronic money stored in an IC card, a method of using electronic money, a receiving terminal, the IC card, an electronic money using program, and a computer-readable recording medium with records of the electronic money using program in the digital broadcast system. <P>SOLUTION: The IC card 150 has a memory for storing information about electronic money, the receiving terminal 130 has a means for transmitting information about processing of electronic money stored in the memory of the IC card 150 to a customer management center 170 over the public telephone network 160, and this center 170 has a means for receiving information transmitted from the receiving terminal 130, thereby executing instructed processes. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcasting system that enables electronic currency settlement in a receiving terminal that receives video and audio signals, a method of using electronic currency in the digital broadcasting system, a receiving terminal, an IC card, and an electronic currency. The present invention relates to a computer-readable recording medium having recorded therein a use program for electronic money and a use program for electronic currency.

[0002]

2. Description of the Related Art A terminal system for an IC card for conducting electronic commerce in combination with a mobile phone is described in, for example, Japanese Patent Laid-Open No. 2001-167231.

[0003]

The above-mentioned prior art describes a small and portable IC card terminal capable of conducting electronic commerce through a communication line in combination with a mobile phone or the like. Nothing is mentioned about a method of presenting information necessary for electronic commerce, particularly information presentation by video, audio, and character information, and a method of realizing electronic currency settlement linked with these.

Further, in order to realize this electronic currency settlement, it is necessary to prepare a dedicated IC card terminal.

An object of the present invention is to send and receive electronic currency at low cost while maintaining confidentiality by transmitting electronic currency attached to individual encrypted information that is individually generated and transmitted for each receiving terminal. , And a digital broadcasting system linked with digital broadcasting capable of payment, a method of using electronic currency in the digital broadcasting system, a receiving terminal, an IC card, an electronic currency usage program, and a computer readable recording of the electronic currency usage program To provide a suitable recording medium.

[0006] In addition, it is to provide a smooth electronic currency settlement environment by using a receiving terminal already on the market and without imposing a new economic burden on the user and further by linking with an interactive application. .

[0007]

In order to achieve the above object, a digital broadcasting system according to the present invention provides at least one customer management center for managing customer information, and information transmitted from the customer management center. A broadcasting center for broadcasting and a receiving terminal for receiving information transmitted from the broadcasting center are connected to each other by a network,
At least one for exchanging information with the receiving terminal
In the digital broadcasting system including the above IC card, the IC card includes an IC card storage unit that stores information about electronic currency, and the receiving terminal provides information about processing of the electronic currency to the network. Characterized in that it comprises a receiving terminal transmitting means for transmitting to the customer management center via the receiving terminal, and the customer managing center comprises a receiving means for receiving the information transmitted from the receiving terminal to perform the processing. .

Further, in the digital broadcasting system according to the present invention, at least one of the customer management center and the broadcasting center generates individual information generating means for generating individual information of a customer and scramble key generation for generating a scramble key. Means and a work key generation means for generating a work key,
Master key generating means for generating the same master key as the master key stored in the IC card; first encrypting means for encrypting the scramble key with the work key;
Second encryption means for encrypting the work key and the individual information by the master key, information encrypted by the first encryption means, and the second encryption means. The broadcasting center comprises the third encryption means for multiplexing information, and the third encryption means for encrypting the information multiplexed by the multiplexing means with the scramble key. When the processing instructed by the receiving terminal is the replenishment of electronic currency to the IC card, the individual information generating means includes the modulating means for modulating the information encrypted by the individual information generating means. It is characterized in that the information includes information about electronic currency to be transmitted to the receiving terminal.

Further, in the digital broadcasting system according to the present invention, the IC card includes a decryption means for decrypting the information received by the receiving terminal with a master key, and an electronic information included in the individual information output from the decryption means. Electronic currency control means for rewriting information about electronic currency stored in the IC card storage means based on information about currency.

Further, in the digital broadcasting system according to the present invention, when the processing instructed by the receiving terminal is electronic settlement using the electronic currency stored in the IC card, the electronic currency control of the IC card is performed. The means creates information corresponding to the electronic payment based on the information about electronic currency stored in the IC card storage means, encrypts the created information using the master key, and outputs the encrypted information.
The receiving terminal transmits the encrypted information corresponding to the electronic payment output from the IC card to the customer management center by using the receiving terminal transmitting unit.

Further, the digital broadcasting system according to the present invention is characterized in that the customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving means.

Further, a method of using electronic currency in a digital broadcasting system according to the present invention is at least one or more customer management center for managing customer information, and broadcasting for broadcasting information transmitted from the customer management center. Of the electronic currency in a digital broadcasting system including at least one IC card for exchanging information with the receiving terminal, the center and a receiving terminal for receiving information transmitted from the broadcasting center are connected to each other by a network. A method of using, wherein the IC card stores information about electronic currency in an IC card storage means,
A step of transmitting information about processing of the electronic currency to the customer management center via the network by the receiving terminal transmitting means of the receiving terminal; and a receiving means of the customer management center transmitted from the receiving terminal. It is characterized by comprising a step of receiving information, and a step of the customer management center performing a process for the electronic currency based on the information received by the receiving means.

Also, in the method of using electronic currency in the digital broadcasting system according to the present invention, the individual information generating means is
The IC card stores the customer individual information generation step, the scramble key generation means generates a scramble key, the work key generation means generates a work key, and the master key generation means is stored in the IC card. Generating the same master key, the first encryption means encrypts the scramble key with the work key, and the second encryption means uses the work key and the individual key. Encrypting information with the master key, and multiplexing means for multiplexing the information encrypted by the first encrypting means and the information encrypted by the second encrypting means And a step of encrypting the information multiplexed by the multiplexing means with the scramble key by the third encryption means, and a modulation means of the broadcast center encrypted by the third encryption means. Transmitting the converted information, the individual information generating means sends the individual information to the receiving terminal when the processing instructed by the receiving terminal is the replenishment of electronic currency to the IC card. Including information about electronic currency for transmission.

Further, in the method of using electronic currency in the digital broadcasting system according to the present invention, the decrypting means of the IC card decrypts the information received by the receiving terminal with a master key, and the electronic money of the IC card. Currency control means
And rewriting the information about the electronic currency stored in the IC card storage means based on the information about the electronic currency included in the individual information output from the decryption means.

Further, in the method of using electronic currency in the digital broadcasting system according to the present invention, when the processing instructed by the receiving terminal is electronic settlement using the electronic currency stored in the IC card, A step in which the electronic currency control means of the IC card creates information corresponding to the electronic payment based on the information related to the electronic currency stored in the IC card storage means; and the created information using the master key. And then outputting the encrypted data by the receiving terminal transmitting means of the receiving terminal, and transmitting the encrypted information corresponding to the electronic payment output from the IC card to the customer management center. It is characterized by being provided.

Further, a method of using electronic currency in a digital broadcasting system according to the present invention comprises the step of the customer management center performing the electronic payment based on the information corresponding to the electronic payment received by the receiving means. It is characterized by

Further, the receiving terminal according to the present invention is connected to at least one or more customer management centers for managing customer information and a broadcasting center for broadcasting the information transmitted from the customer management center by a network, A receiving terminal for receiving information transmitted from the broadcasting center and exchanging information with an IC card,
The IC card stores information about electronic currency.
The receiving terminal includes a C card storing means, the receiving terminal includes receiving terminal transmitting means for transmitting information about the processing of the electronic currency to the customer management center via the network, and the customer management center receives the reception. It is characterized in that a receiving means for receiving the information transmitted from the terminal is provided to perform the processing.

Further, in the receiving terminal according to the present invention, at least one of the customer management center and the broadcasting center generates individual information generating means for generating individual information of the customer,
Scramble key generation means for generating a scramble key,
Work key generation means for generating a work key, master key generation means for generating the same master key as the master key stored in the IC card, and first encryption for encrypting the scramble key with the work key. Second means for encrypting the work key and the individual information by the master key
Encryption means, a multiplexing means for multiplexing the information encrypted by the first encryption means and the information encrypted by the second encryption means, and the multiplexing means for multiplexing the information. Third encryption means for encrypting the encrypted information by the scramble key, and the broadcasting center comprises a modulation means for modulating the information encrypted by the third encryption means. When the processing instructed by the receiving terminal is the replenishment of electronic currency to the IC card, the individual information generating means may include the information regarding the electronic currency to be transmitted to the receiving terminal in the individual information. Characterize.

The receiving terminal according to the present invention is the IC
The card uses the decryption means for decrypting the information received by the receiving terminal with the master key, and the I-value based on the information about the electronic currency included in the individual information output from the decryption means
And an electronic currency control means for rewriting information about electronic currency stored in the C card storage means.

Further, in the receiving terminal according to the present invention, when the processing instructed by the receiving terminal is an electronic settlement using the electronic currency stored in the IC card, the IC
The electronic currency control means of the card creates information corresponding to the electronic payment based on the information about the electronic currency stored in the IC card storage means, and encrypts the created information using the master key. The receiving terminal transmits the encrypted information corresponding to the electronic payment output from the IC card to the customer management center by using the receiving terminal transmitting means.

Further, the receiving terminal according to the present invention is characterized in that the customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving means.

Further, the IC card according to the present invention includes at least one customer management center for managing customer information, a broadcasting center for broadcasting the information transmitted from the customer management center, and a transmission from the broadcasting center. An IC card for exchanging information with the receiving terminal in a digital broadcasting system in which a receiving terminal for receiving the received information is connected to each other via a network, and the IC card stores information about electronic currency. IC card storage means is provided, the receiving terminal is provided with receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, and the customer management center is provided with the receiving terminal. It is characterized in that a receiving means for receiving the information transmitted from the terminal is provided to perform the processing.

Further, in the IC card according to the present invention, at least one of the customer management center and the broadcasting center generates an individual information generating means for generating customer's individual information and a scramble key generating means for generating a scramble key. Work key generating means for generating a work key, and the IC
The master key generation means for generating the same master key as the master key stored in the card, the first encryption means for encrypting the scramble key with the work key, the work key and the individual information Second encryption means for encrypting with the master key; multiplexing means for multiplexing the information encrypted by the first encryption means and the information encrypted by the second encryption means; A third encryption unit that encrypts the information multiplexed by the multiplexing unit with the scramble key, the broadcasting center
In the case where the modulation means for modulating the information encrypted by the third encryption means is transmitted, and the processing instructed by the receiving terminal is the replenishment of electronic currency to the IC card, the individual The information generating means is characterized in that the individual information includes information on electronic currency to be transmitted to the receiving terminal.

The IC card according to the present invention is based on the decryption means for decrypting the information received by the receiving terminal with the master key, and the information about the electronic currency included in the individual information output from the decryption means. And an electronic currency control means for rewriting information about electronic currency stored in the IC card storage means.

Further, in the IC card according to the present invention, when the processing instructed by the receiving terminal is an electronic settlement using the electronic currency stored in the IC card,
The electronic currency control means of the C card creates information corresponding to the electronic payment based on the information about the electronic currency stored in the IC card storage means, and encrypts the created information using the master key. The reception terminal transmits the encrypted information corresponding to the electronic payment output from the IC card to the customer management center using the reception terminal transmission means.

The IC card according to the present invention is characterized in that the customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving means.

Furthermore, the electronic currency utilization program according to the present invention comprises at least one customer management center for managing customer information, a broadcasting center for broadcasting the information transmitted from the customer management center, and a network. A program for using electronic currency, which is applied to a receiving terminal that is connected and receives information transmitted from the broadcasting center and exchanges information with an IC card, wherein the IC card relates to electronic currency. An IC card storing means for storing information, and a step of causing the receiving terminal to function as a receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, The customer management center comprises a receiving means for receiving the information transmitted from the receiving terminal. Processing and performing.

Further, in the electronic currency utilization program according to the present invention, at least one of the customer management center and the broadcasting center generates an individual information generating means for generating individual information of a customer and a scramble key for generating a scramble key. Key generation means, work key generation means for generating a work key, master key generation means for generating the same master key as the master key stored in the IC card, and the scramble key is encrypted by the work key. First encryption means, second encryption means for encrypting the work key and the individual information by the master key, information encrypted by the first encryption means, and the second information Multiplexing means for multiplexing the information encrypted by the encrypting means, and the information multiplexed by the multiplexing means is encrypted by the scramble key A third encryption means is provided, the broadcasting center is provided with a modulation means for modulating the information encrypted by the third encryption means, and the processing instructed by the receiving terminal is In the case of replenishing the IC card with electronic currency, the individual information generating means is characterized in that the individual information includes information about electronic currency to be transmitted to the receiving terminal.

Also, in the electronic currency utilization program according to the present invention, the IC card includes the decryption means for decrypting the information received by the receiving terminal with the master key, and the individual information output from the decryption means. The electronic currency control means rewrites the information about the electronic currency stored in the IC card storage means based on the information about the electronic currency stored in the IC card storage means.

Further, in the electronic currency utilization program according to the present invention, when the processing instructed by the receiving terminal is electronic settlement using the electronic currency stored in the IC card, The currency control means is the I
Information corresponding to the electronic payment is created based on the information related to the electronic currency stored in the C card storage means, the created information is encrypted by using the master key and output, and the information is output to the receiving terminal. It is characterized by including a step of causing the customer management center to transmit the encrypted information corresponding to the electronic payment output from the IC card, using the receiving terminal transmitting means.

In the electronic currency utilization program according to the present invention, the customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving means.

Further, the electronic currency utilization program according to the present invention is characterized by being recorded in the recording medium of the receiving terminal by being transmitted from the broadcasting center.

Further, the electronic currency utilization program according to the present invention includes at least one customer management center for managing customer information, a broadcasting center for broadcasting information transmitted from the customer management center, and the broadcasting. A program for using electronic currency, which is applied to an IC card for exchanging information with a receiving terminal in a digital broadcasting system in which a receiving terminal for receiving information transmitted from a center is connected to each other via a network, The IC
The card includes IC card storage means for storing information about electronic currency, and the receiving terminal includes receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network. The customer management center includes a receiving unit for receiving the information transmitted from the receiving terminal and performs the processing, and at least one of the customer management center and the broadcasting center stores the individual information of the customer. Individual information generating means for generating, scramble key generating means for generating scramble key, work key generating means for generating work key, and I
A master key generation unit that generates the same master key as the master key stored in the C card, a first encryption unit that encrypts the scramble key with the work key, the work key, and the individual information. Second encryption means for encrypting with the master key, and multiplexing means for multiplexing the information encrypted by the first encryption means and the information encrypted by the second encryption means A third encryption means for encrypting the information multiplexed by the multiplexing means with the scramble key, and the broadcasting center transmits the information encrypted by the third encryption means. If the processing instructed by the receiving terminal is to replenish the IC card with electronic currency, the individual information generating means sends the individual information to the receiving terminal. Decryption means for decrypting the information received by the receiving terminal of the IC card with a master key, including information on the electronic currency to be used, and information on the electronic currency included in the individual information output from the decryption means. It is characterized by the step of functioning as electronic currency control means for rewriting the information related to electronic currency stored in the IC card storage means based on the above.

Further, in the electronic currency utilization program according to the present invention, when the processing instructed from the receiving terminal is electronic settlement using the electronic currency stored in the IC card, the electronic money of the IC card is used. The currency control means is the I
The information corresponding to the electronic payment is created based on the information related to the electronic currency stored in the C card storage means, the created information is encrypted by using the master key and output, and the receiving terminal, It is characterized in that the encrypted information corresponding to the electronic payment output from the IC card is transmitted to the customer management center by using the receiving terminal transmitting means.

In the electronic currency utilization program according to the present invention, the customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving means.

Further, the electronic currency utilization program according to the present invention is recorded in the recording medium of the IC card by being transmitted from the broadcasting center.

Further, the computer-readable recording medium recording the electronic currency utilization program according to the present invention stores at least one or more customer management center for managing customer information and information transmitted from the customer management center. It is connected to a broadcasting center for broadcasting by a network, receives the information transmitted from the broadcasting center, and records an electronic currency utilization program applied to a receiving terminal for exchanging information with an IC card. A computer-readable recording medium, wherein the IC card includes an IC card storage unit for storing information about electronic currency, and the receiving terminal sends information about processing of the electronic currency to the customer via the network. Provided with a step to function as a receiving terminal transmitting means for transmitting to the management center. , The customer management center, and performs the process comprising a receiving means for receiving the information transmitted from the receiving terminal.

Further, in the computer-readable recording medium in which the electronic currency utilization program according to the present invention is recorded, at least one of the customer management center and the broadcasting center generates individual information for the customer. Means, a scramble key generating means for generating a scramble key, a work key generating means for generating a work key,
Master key generating means for generating the same master key as the master key stored in the IC card; first encrypting means for encrypting the scramble key with the work key;
Second encryption means for encrypting the work key and the individual information by the master key, information encrypted by the first encryption means, and the second encryption means. The broadcasting center comprises the third encryption means for multiplexing information, and the third encryption means for encrypting the information multiplexed by the multiplexing means with the scramble key. When the processing instructed by the receiving terminal is the replenishment of electronic currency to the IC card, the individual information generating means includes the modulating means for modulating the information encrypted by the individual information generating means. It is characterized in that the information includes information about electronic currency to be transmitted to the receiving terminal.

Further, in the computer-readable recording medium in which the electronic currency utilization program according to the present invention is recorded, the IC card has a decryption means for decrypting the information received by the receiving terminal with a master key, and the decrypting means. The electronic currency control means rewrites the information about the electronic currency stored in the IC card storage means based on the information about the electronic currency included in the individual information output from the means.

Further, the computer-readable recording medium in which the electronic currency utilization program according to the present invention is recorded is an electronic settlement using the electronic currency in which the processing instructed by the receiving terminal is stored in the IC card. In this case, the electronic currency control means of the IC card creates information corresponding to the electronic payment based on the information about the electronic currency stored in the IC card storage means, and the created information is used as the master information. Encrypt with the key and output,
And a step of causing the receiving terminal to transmit the encrypted information corresponding to the electronic payment output from the IC card to the customer management center by using the receiving terminal transmitting means. To do.

Further, in the computer-readable recording medium recording the electronic currency utilization program according to the present invention, the customer management center can perform the electronic payment based on the information corresponding to the electronic payment received by the receiving means. It is characterized by performing.

Further, in the computer-readable recording medium recording the electronic currency utilization program according to the present invention, it is recorded that the electronic currency utilization program is recorded in the recording medium by being transmitted from the broadcasting center. Characterize.

The computer-readable recording medium recording the electronic currency utilization program according to the present invention stores at least one or more customer management centers for managing customer information, and information transmitted from the customer management center. The present invention is applied to an IC card for exchanging information with a receiving center in a digital broadcasting system in which a broadcasting center for broadcasting and a receiving terminal for receiving information transmitted from the broadcasting center are connected to each other via a network. A computer-readable recording medium recording an electronic currency utilization program, wherein the IC card is
An IC card storage unit for storing information about electronic currency is provided, and the receiving terminal includes receiving terminal transmitting unit for transmitting information about processing of the electronic currency to the customer management center via the network, The customer management center includes a receiving unit for receiving the information transmitted from the receiving terminal, performs the processing, and at least one of the customer management center and the broadcasting center generates an individual information of the customer. Information generation means, scramble key generation means for generating a scramble key, work key generation means for generating a work key, master key generation means for generating the same master key as the master key stored in the IC card, A first encryption means for encrypting the scramble key with the work key, and the work key and the individual information Second encryption means for encrypting with the master key; multiplexing means for multiplexing the information encrypted by the first encryption means and the information encrypted by the second encryption means; A third encryption unit that encrypts the information multiplexed by the multiplexing unit with the scramble key, and the broadcasting center transmits the information encrypted by the third encryption unit. When the processing instructed by the receiving terminal is to replenish the IC card with electronic currency, the individual information generating means transmits the individual information to the receiving terminal. Decoding means for decrypting the information received by the receiving terminal with a master key, including electronic currency information, and electronic currency included in the individual information output from the decrypting means. Based on the information, characterized in that it comprises a step to act as electronic currency control means for rewriting the information about the electronic currency stored in the IC card storing unit.

Further, the computer-readable recording medium in which the electronic currency utilization program according to the present invention is recorded is an electronic settlement using the electronic currency in which the processing instructed by the receiving terminal is stored in the IC card. In this case, the electronic currency control means of the IC card creates information corresponding to the electronic payment based on the information about the electronic currency stored in the IC card storage means, and the created information is used as the master information. Encrypt with the key and output,
The receiving terminal transmits the encrypted information corresponding to the electronic payment output from the IC card to the customer management center by using the receiving terminal transmitting unit.

Further, in the computer-readable recording medium recording the electronic currency utilization program according to the present invention, the customer management center can perform the electronic payment based on the information corresponding to the electronic payment received by the receiving means. It is characterized by performing.

The computer-readable recording medium recording the electronic currency utilization program according to the present invention is such that the electronic currency utilization program is recorded in the recording medium by being transmitted from the broadcasting center. Characterize.

[0047]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be illustratively described in detail below with reference to the drawings. However, the dimensions of the components described in this embodiment,
Unless otherwise specified, the material, the shape, the relative arrangement, and the like are not intended to limit the scope of the present invention thereto.

Further, in the following drawings, the same members as those described in the above drawings are designated by the same reference numerals. Further, the description of the embodiments of the digital broadcasting system according to the present invention, which will be described below, describes a method of using electronic currency, a receiving terminal, an IC card, a program for using electronic currency and use of electronic currency in the digital broadcasting system according to the present invention. It also serves as the description of the embodiment of the computer-readable recording medium recording the program.

(One Embodiment of Digital Broadcasting System) One embodiment of the digital broadcasting system according to the present invention will be described with reference to FIG.

FIG. 1 is a diagram showing an overall configuration of a digital broadcasting system including a digital broadcasting receiving terminal 130 installed in a general home, a digital satellite broadcasting device for transmitting electronic currency, and the like, according to the present invention. 1 is an overall configuration diagram of an embodiment of a digital broadcasting system. The digital broadcasting system shown in FIG. 1 will be described by taking a digital satellite broadcasting system using broadcasting satellites as an example, but the digital broadcasting system according to the present invention is not limited to the digital satellite broadcasting system, and other transmission media may be used. It can be used or combined with a broadcasting satellite to form digital broadcasting.

In FIG. 1, 100 is a broadcasting center, and 11
0 is a broadcasting satellite, 120 is a parabolic antenna, 130 is a receiving terminal, 140 is a television, 150 is an IC card, 160
Is a public telephone line network, 170 is a customer management center, and 180 is a financial institution.

First, the outline of the operation of the receiving terminal and the digital satellite broadcasting system for transmitting electronic money to the receiving terminal will be described with reference to FIG.

The receiving terminal 130 receives the broadcast wave transmitted from the broadcasting center 100 via the broadcasting satellite 110, expands and reproduces the compressed video and audio, and outputs the expanded video and audio to the television 140.

In the digital broadcasting system to which the present invention is applied, charges can be made on a channel basis, a program basis, a series of program basis, etc., and the viewing contract information is the IC card 1.
If it is stored in 50 and a viewing contract is made,
The decryption key is output from the IC card 150, the scramble is released, and the reception terminal 130 can view the content.

In the case of billing on a program basis or a series of program basis, the viewing record is stored in the IC card 150,
It is possible to charge the viewer who owns the receiving terminal 130 by transmitting it to the customer management center 170 via the public telephone line network 160 using the modem built in the receiving terminal 130.

Further, the customer management center 170 is connected to a financial institution 180 such as a bank or a credit card company and can settle the viewing fee by using an account withdrawal or credit card settlement.

Further, individual information including a part of customer information such as viewing contract is sent to the broadcasting center 100, and this individual information is sent to the IC card 150 inserted in the receiving terminal 130 via the broadcasting satellite 110. Then, for example, the process of changing the viewing contract can be completed.

Next, the internal configurations of the broadcasting center 100 and the customer management center 170 shown in FIG. 1 will be described with reference to FIG. FIG. 2 shows the broadcasting center 100 shown in FIG.
3 is a block diagram showing an internal configuration of a customer management center 170. FIG.

In FIG. 2, 100 is the broadcasting center shown in FIG. 1, 170 is the customer management center shown in FIG.
Is a financial institution shown in FIG. 1, 200 is a video server, 21
Reference numeral 0 is a compression device, 220 is a multiplexing device, and 221 is a program information generation device.

Reference numeral 222 is a bidirectional data server, and 23.
0 is an encryption device, 240 is a modulation device, 250 is a broadcast wave output terminal, 260 is a public line connection terminal, 270 is a receiving server, 280 is a customer information management device, 290 is an individual information generation device, and 300 is encrypted information generation. Device, 310 is the encryption key,
320 is common encryption information, and 330 is individual encryption information.

With reference to FIG. 2, the operation of the broadcasting center 100 transmitting a program and the information associated with it will be described.

The material of the program is edited by, for example, a digital VTR, and then the video server 20 in the broadcasting center 100.
It is accumulated once at 0.

The video and audio reproduced from the video server 200 are compressed by the compression device 210. For example, the video is MPEG2.
(Motion Pictures Coding G
The audio signal is, for example, MPEG1 (Motion P).
pictures Coding Group phase
It is compressed according to the Layer 2 standard of e 1).

There are a plurality of video servers 200 and a plurality of compression devices 210, and other programs are processed in parallel. The program information generation device 221 generates information of the electronic program guide, packetizes it in a predetermined format, and outputs it.

The individual information generation device 290 generates individual information based on the customer information output from the customer information management device 280.

The encrypted information generation device 300 uses the individual encrypted information 330 based on the customer information output by the customer information management device 280 and the individual information output by the individual information generation device 230.
And the common encryption information 320 and the encryption key 310.
To generate.

The multiplexing device 220 includes a plurality of compression devices 21.
A compressed video signal or a compressed audio signal input from 0, electronic program information input from the program information generation device 221, an application program for realizing electronic currency settlement input from the bidirectional data server 222, and encrypted information The individual encryption information 330 and the encryption information 320 input from the generation device 300 are multiplexed in the transport stream format of MPEG2, for example.

In the case of pay broadcasting, the encryption device 230 uses the encryption key 310 generated by the encryption information generating device 300 to encrypt the transport stream multiplexed by the multiplexing device 220. Output.

Further, the modulator 240 is the encryption device 2
For example, a Reed-Solomon code is added to the transport stream encrypted by 30.
Sync inversion, interleave, energy spread, QPSK
(Quadrature Phase Shift K
A series of DVB-S (Digital) modulation, etc.
Video Broadcasting-Satel
The broadcast station 10 performs modulation processing according to the standard.
The antenna installed on the rooftop of No. 0 causes the broadcasting satellite 110 to be uplinked.

On the other hand, in the customer management center 170, the public line connection terminal 260 is connected to the public telephone line network 160, and from each receiving terminal 130 connected to the public telephone line network 160 to the IC of each receiving terminal 130. Viewing records and electronic currency payment information stored in the card 150 are transmitted.

Receiving server 27 in customer management center 170
0 receives the viewing record and electronic currency settlement information transmitted from the receiving terminal 130.

Since this signal is packetized and encrypted, the receiving server 270 generates the encryption key (master key) 3 for each IC card generated by the encryption information generating apparatus 300.
Decode with 45.

The receiving server 270 then receives the information packetized in this signal, for example, the IC card number, the viewing record such as the viewing date and time, the viewing amount, the electronic currency remittance request, the account number, the personal identification number, and the payment. First, electronic currency settlement information such as payment amount, purchase item name, and number of purchases is extracted and registered in the customer database of the customer information management device 280.

In response to this, the individual information generation device 290 connected to the financial institution 180 such as a bank or a credit card company by a dedicated line refers to the customer information management device 280,
In the case of viewing records, the IC cards are totaled for each IC card number and billed to the financial institution 180, for example, once a month by means of account transfer or credit card withdrawal.

(Electronic Currency Settlement) Further, when the electronic currency is settled, the remittance request of the electronic currency, the account number, the personal identification number, the payee, the payment amount, the purchase item name are immediately or collectively in one day. , And transfer electronic currency settlement information such as the number of purchases to the financial institution 180.

(Electronic Currency Transmission Request) In the case of electronic money remittance request (electronic currency replenishment request to the IC card), the individual information generating device 290 determines that the IC card code, the account number, and the personal identification number match. If there is a balance and it is correct and authenticated, the electronic currency is received from the financial institution 180. Here, in the meaning of replenishment of electronic currency referred to in the present invention, in addition to the meaning of replenishment performed when a predetermined fixed amount is insufficient, the meaning of adding electronic passage regardless of whether the predetermined fixed amount is insufficient or not. Also includes.

Then, the individual information generating device 290 receives the customer information output from the customer information managing device 280 and the financial institution 18
The electronic currency received from 0 is associated with each IC card number to generate individual information.

The encrypted information generating apparatus 300 uses the individual encrypted information 330 based on the customer information output by the customer information management apparatus 280 and the individual information output by the individual information generating apparatus 290.
And the common encryption information 320 and the encryption key (scramble key) 310.

Here, the functions of the respective devices shown in FIG. 2 may be realized by, for example, the CPU cooperating with a program stored in the storage device. In this case, a computer and a server that realize the functions of the devices of the broadcasting center 100 and the customer management center 170 shown in FIG. 2 configure the broadcasting center 100 and the customer management center 170 shown in FIG.

Also, the broadcasting center 100 shown in FIG.
The devices other than the modulation device 240 included in the customer management center 170 and the reception server 270 included in the customer management center 170 are not limited to the devices provided in the broadcasting center 100 and the customer management center 170, respectively, as shown in FIG. ,
Each of the above devices is provided in the broadcasting center 100 and the customer management center 1.
It may be provided in at least one of 70.

Next, the operation of the encrypted information generating apparatus 300 shown in FIG. 2 will be described with reference to FIG. FIG. 3 shows FIG.
3 is a block diagram showing an internal configuration of the encrypted information generating device 300 shown in FIG.

In FIG. 3, 220 is the multiplexing device shown in FIG. 2, 230 is the encryption device shown in FIG. 2, 270 is the receiving server shown in FIG. 2, 280 is the customer information management device shown in FIG. Reference numeral 290 denotes the individual information generation device shown in FIG.
00 is the encrypted information generation device shown in FIG.
The encryption key (scramble key) 320 shown in FIG. 2 is the common encryption information shown in FIG.

Further, 330 is the individual encryption information shown in FIG. 2, 340 is a master key generation device, 345 is a master key, and 3 is a master key.
50 is an EMM (Entitlement Management)
ment Message) multiplexer, 360 is EM
M encryption device, 370 is a work key generation device, 380 is a scramble key generation device, and 390 is an ECM (entity).
element control message) encryption device.

First, in the master key generation device 340 of the encrypted information generation device 300, for example, the customer information management device 28
The master key (Km) 345 is issued based on the IC card number included in the customer information output from 0.

This master key (Km) 345 is the receiving terminal 1
It is also stored in the memory of the IC card 150 inserted in the IC card 30, and a different master key is stored for each IC card 150.

Further, the work key generating device 370 issues a work key (Kw). The EMM multiplexing device 350 generates the work key and the individual information in which the customer information management device 280 outputs the customer information in the individual information generation device 230 and the electronic currency received from the financial institution 180 for each IC card number. The work key (Kw) issued by the device 370 is multiplexed and output as an EMM message.

The customer information output by the customer information management device 280 includes control information related to viewing such as Pay Per View and messages for each individual such as notification of completion of viewing contract procedure for the viewer.

On the other hand, the electronic currency received from the financial institution 180 includes, for example, the electronic currency itself, an account number,
Information such as personal identification number and account balance is also included and encrypted. The encryption here is performed by the financial institution 180 and the IC card 1.
It is encrypted by the encryption method and the encryption key agreed with the electronic currency control device 640 in 50. Therefore, this encryption can be decrypted by the electronic currency control device 640.

The EMM encrypting device 360 encrypts the EMM message multiplexed by the EMM multiplexing device 350 using the master key (Km) 345 issued by the master key generating device 340, and obtains as individual encryption information 330. Output.

The scramble key generation device 380 issues and outputs a scramble key (Ks). This scramble key (Ks) is used as the encryption key 310 used in the encryption device 230 shown in FIG.

The ECM encryption device 390 uses the scramble key (Ks) issued by the scramble key generation device 380.
To the work key (K
It is encrypted in w) and output as common encrypted information 320.

The common encryption information 320 and the individual encryption information 330 including the electronic currency are multiplexed by the multiplexer 220 shown in FIG. 2 at the same time as the compressed video information and the compressed audio information, and transmitted via the satellite line. It is transmitted to each receiving terminal 130.

Here, each function of each device shown in FIG. 3 may be realized by the CPU cooperating with a program stored in the storage device.

Next, the receiving terminal shown in FIG. 1 will be described with reference to FIG. FIG. 4 shows the receiving terminal 1 shown in FIG.
3 is a block diagram showing an internal configuration of 30. FIG.

In FIG. 4, 130 is the receiving terminal shown in FIG. 1, 150 is the IC card shown in FIG. 1, 400 is a microcomputer, 410 is a key, 420 is an LED, 430 is a remote controller, and 440 is a RAM or ROM. A memory, 450 is a flash memory, 460 is a system bus, 470 is a tuner, 480 is a descrambler, 500 is a transport decoder, 510 is an MPEG2 decoder, and 520 is an audio DAC (Digital to Analog).
g Converter), 530 is a video encoder, 540 is an antenna input terminal, 550 is an audio output terminal, 560 is a video output terminal, 570 is a modem, and 580 is a line connection terminal.

First, the parabolic antenna 12 shown in FIG.
Receiving terminal 1 that received the broadcast wave from broadcasting satellite 110 at 0
30 takes in a received signal to tuner 470 via antenna input terminal 540.

The tuner 470 may be, for example, QPSK demodulator, inverse energy spreader, deinterleaver, sync inversion,
A series of DVB-S such as Reed-Solomon code check
It demodulates by the method according to the standard, and outputs the encrypted transport stream.

The encrypted transport stream is once input to the transport decoder 500 via the descrambler 480.

When the viewer designates the channel selection operation by the key 410 or the remote controller 430, the microcomputer 400 instructs the transport decoder 500 to designate the designated PID (Packet IDentificate).
Instruct via the system bus 460 to filter only the TS packets of n).

First, the transport decoder 500 filters the TS packets included in the encryption key, that is, the TS packets transmitting the information of the common encryption information 320 and the individual encryption information 330 shown in FIG. Then, the microcomputer 400 extracts the common encryption information 320 and the individual encryption information 330 included in the payload of this TS packet and sets them in the IC card 150.

Here, the IC shown in FIG. 1 using FIG.
The internal processing operation of the card 150 will be described. Figure 5
2 is a block diagram showing an internal configuration of the IC card 150 shown in FIG. 1. FIG.

In FIG. 5, 150 is the IC shown in FIG.
2, 310 is the encryption key shown in FIG. 2, 320 is the common encryption information shown in FIG. 2, 330 is the individual encryption information shown in FIG. 2, 400 is the microcomputer shown in FIG.
, 500 is the transport decoder shown in FIG. 4, and 600 is the serial I / F (Inte.
rface), 610 is an ECM decoding device, and 620 is an EM.
M decryption device, 631 is a master key (Km) stored in the memory 630, 640 is an electronic currency control device, 641 is a memory for storing information about electronic currency, 650 is a contract information control device, and 651 is information about contract information. , 660 is a viewing contract determination device

The memories 630, 641 and 651 are composed of, for example, RAM and ROM. Further, various programs used in the IC card may be recorded in the memory 630. In addition, the memory 63
Although 0, 641, and 651 are described as separate members in FIG. 5, in the present embodiment, the memory 63 is used.
0, 641, 651 may be realized by one or two memories, or may be realized by four or more memories.

First, the microcomputer 400 extracts the common encryption information 320 and the individual encryption information 330 from the payload of the TS packet and sets it in the IC card 150. The common encryption information 320 is the ECM via the serial I / F 600.
The individual encryption information 330 is transferred to the decryption device 610, and is transferred to the EMM decryption device 620.

The individual encrypted information 330 input to the EMM decryption device 620 decrypts the individual information encrypted using the master key (Km) 631 held in the memory of each IC card 150.

Since the master key (Km) 631 is different for each IC card 150, the master key (Km) 345 issued by the master key generating device 340 in the encrypted information generating device 300 shown in FIG. Only if
Individual information can be decrypted.

When the individual information is decrypted, the EMM decryption device 620 selects the work key (K
w) The contract information and the information about the electronic currency are extracted and stored in the memories 651 and 641 in the IC card 150, respectively.

The contract information includes control information related to viewing such as Pay Per View and a message for each individual such as notification of completion of viewing contract procedure to the viewer.

On the other hand, information about electronic currency is, for example,
In addition to the electronic currency itself, it also contains information such as the account number, personal identification number, and account balance, and is encrypted. As described above, this encryption is an encryption performed by the encryption method and the encryption key agreed between the financial institution 180 and the electronic currency control device 640 in the IC card 150. Therefore, this encryption can be decrypted by the electronic currency control device 640.

The work key (Kw) decrypted and extracted by the EMM decryption device 620 is input to the ECM decryption device 610.

The ECM decoding device 610 uses the serial I / F 6
The common encryption information 320 transferred from the microcomputer 400 via 00 is decrypted by using the work key (Kw) extracted by the EMM decryption apparatus 620, and the scramble key (K
s) is extracted.

The viewing contract determining device 660 refers to the contract information and determines whether or not to pass the scramble key (Ks) decrypted by the ECM decrypting device 610, and when the viewing contract of the program is made, The scramble key (Ks) is passed and the microcomputer 40 is passed through the serial I / F 600.
Transfer to 0.

The microcomputer 400 uses the scramble key (K
s) via the system bus 460 to the descrambler 480
To set the encrypted T with a specific PID.
Decode the S packet.

Among the specific PIDs are TS packets containing compressed video information and TS packets containing compressed audio information, and the transport decoder 500 reconstructs compressed video information and compressed audio information from them. , MPE
Output to the G2 decoder 510.

Then, the MPEG2 decoder 510 inputs the compressed video information and the compressed audio information input from the transport decoder 500 to the video decoder and the audio decoder in the MPEG2 decoder 510, respectively.
Perform decompression processing.

Further, based on the time information contained in these, the video decoder and the audio decoder in the MPEG2 decoder 510 are controlled to adjust the output time of the video and audio to synchronize the video and audio.

The MPEG2 decoder 510 outputs the decompressed digital video signal to the video encoder 530.

The video encoder 530 receives the input digital video signal as, for example, NTSC (National).
Television Standard Comm
It is converted into an analog signal of the itite format and input to the television 140 shown in FIG. 1 through the video output terminal 560.

Similarly, the MPEG2 decoder 510 outputs the decompressed digital audio signal to the audio DAC 520.

The audio DAC 520 converts into, for example, a 2-channel analog signal, and outputs the audio output terminal 550.
Is input to the television 140 shown in FIG.

On the other hand, for TS packets including application programs for realizing electronic currency settlement, electronic program information, etc., these TS packets filtered by the transport decoder 500 by the microcomputer 400 are DMA-transferred to the memory 440 via the system bus 460. (Di
rect Memory Access) Transfer.

When the viewer receives an instruction to display the electronic program information from the key 410 or the remote controller 430, the microcomputer 400 extracts the electronic program information or the like from the data cached in the memory 440, and the MPEG2 decoder The OSD (On Sc
The image for the reen display) is developed and the graphic engine of the MPEG2 decoder is controlled to display the decompressed image and the OSD in a superimposed manner.

When an instruction for electronic currency transaction is received from the viewer by the key 410 or the remote controller 430, the microcomputer 4
00 extracts an application program that realizes electronic currency settlement from the data cached in the memory 440, analyzes this, and executes the application program.

As a result, the microcomputer 400 determines that the MPEG2
The image image for OSD is expanded in the screen buffer in the decoder 510, the graphic engine of the MPEG2 decoder 510 is controlled, and the expanded video and OS
D is overlaid and displayed.

Further, the microcomputer 400 displays the software button on the OSD, displays the cursor, and presses the key 41
0 and the remote controller 430 are controlled to wait for input, the application program is executed according to the event generated by the input operation of the viewer, and the electronic currency settlement is executed.

In accordance with the electronic transaction result, the modem 570
To upload the electronic transaction result to the receiving server 270 in the customer management center 170.

Here, the operation of each device in the IC card shown in FIG. 5 may be realized by the CPU cooperating with the program stored in the memory.

(Electronic Currency Settlement Operation) Next, with reference to FIG. 6, an electronic currency settlement execution operation by an application program in one embodiment of the digital broadcasting system according to the present invention will be described. FIG. 6 is an operation schematic diagram showing an execution operation of electronic currency settlement by an application program in one embodiment of the digital broadcasting system according to the present invention.

In FIG. 6, 700 is a normal television image, 710 and 740 and 760 are images displayed by an interactive application linked to the television image, and 72.
0 is a button, 730 is a selected button, and 750 is a personal identification number input field.

In FIG. 6, description will be made by taking as an example the case where the contents of the TV mail order are being shown as normal TV images 700.

In this television mail order, it is assumed that, for example, as shown in FIG. 6 (a), the audio and video for selling a book is playing.

At this time, if the interactive data server 222 in the broadcasting center 100 shown in FIG. 1 is transmitting the interactive application linked to the television image,
The microcomputer 400 in the receiving terminal 130 detects this, controls the transport decoder 500, and DMs these TS packets filtered by the transport decoder 500 to the memory 440 via the system bus 460.
A transfer.

Then, the microcomputer 400 extracts the application program from the memory 440, analyzes it, and executes the application program.

As a result, the microcomputer 400 develops an OSD image image, for example, a bidirectional application linked to a television image in the screen buffer in the MPEG2 decoder 510, controls the graphic engine of the MPEG2 decoder 510, and performs the decompression process. An image 710 by this application is displayed on the television by superimposing the image and the OSD.

The image 710 of the interactive application linked to the television image contains product information and price information. Also, a button 720 is displayed.

The interactive application interlocked with this TV image controls the key 410 and the remote controller 430 to wait for input, and moves the cursor or transitions to the next screen according to the event generated by the input operation of the viewer. , Run the application program.

The selected button 730 in FIG. 6 is a button in the state selected by the cursor.

For example, if the cursor is moved to Yes,
The button displayed Yes is selected, and the viewer presses the key 410 and the decision key of the remote controller 430 to confirm, and the screen transitions to the next screen shown in FIG. 6B.

For example, in response to the question "Do you want to buy this book? It's ¥ 2000."

Next, a screen 740 for confirming the personal identification number of the electronic currency transaction is displayed. The viewer must enter the PIN code input field 750
Enter your PIN number.

Then, the microcomputer 400 uses the IC card 15
The personal identification number is transferred to the electronic currency control device 640 within 0.

The electronic currency control device 640 authenticates and checks whether the electronic currency can be settled or whether there is a balance.

When all of these conditions are satisfied, IC
The card 150 returns permission or refusal to the microcomputer 400, and returns a code indicating the reason in the case of refusal.

Then, as shown in FIG. 6C,
The microcomputer 400 displays the image 760 as a message on the OSD according to the reply result.

On the other hand, the memory 641 in the IC card 150
The electronic currency control device 640, which stores information about electronic currencies, calculates the used balance and also encrypts information such as the account number, personal identification number, account balance, etc. in addition to the electronic currency itself resulting from the use. Convert and output.

At this time, the information output by the electronic currency control device 640 is the information included in the information corresponding to the electronic settlement described in the claims of the present application.

In addition to the above-mentioned balance used by the electronic currency control device 640 and the electronic currency itself resulting from the use,
Encryption of information such as the account number, personal identification number, account balance, etc. is performed using the master key 631 shown in FIG.

In response to this, the microcomputer 400 receives the modem 5
By controlling 70, the encrypted electronic currency and purchase information are uploaded to the receiving server 270 in the customer management center 170 together with an instruction for electronic payment processing. At this time, the receiving terminal 1
The information transmitted from 30 to the customer management center 170 is information included in the information about the processing of electronic currency described in the claims of the present application.

The customer management center 170 completes the electronic currency settlement by transferring the electronic currency to the financial institution 180.

(Electronic Currency Replenishing Operation) Next, a case where the balance of the electronic currency stored in the memory 641 in the IC card 150 is reduced or exhausted will be described with reference to FIG. Note that the replenishment of the present embodiment includes the addition of electronic currency as described above.

FIG. 7 is an operation schematic diagram showing an execution operation of replenishing electronic currency by an application program in one embodiment of the digital broadcasting system according to the present invention.

In FIG. 7, 800 is a normal television image, 810 and 840 and 860 are images displayed by the application for depositing money, 820 is a button, and 830.
Is a selected button, and 850 is a personal identification number input field.

When the balance of the electronic currency stored in the memory 641 in the IC card 150 becomes low or runs out, the electronic currency control device 640 issues a message of insufficient balance. The microcomputer 400 detects this via the serial I / F 600 in the IC card 150.

As shown in FIG. 7A, the microcomputer 400 uses the OSD function of the MPEG2 decoder 510 to generate a message and displays the image by the depositing application shown in FIG.

The viewer responds to this, and the viewer presses the key 41.
When the amount of money is input using 0 and the remote controller 430 to instruct the electronic money transfer, as shown in FIG. 7B,
The microcomputer 400 uses the OSD function of the MPEG2 decoder 510 to display the personal identification number input field 850 to request the personal identification number input.

Then, the microcomputer 400 transfers the personal identification number input by the viewer to the electronic currency control device 640 in the IC card 150, and if the authentication is successful and the authentication is successful, the IC card 150 sends a message to that effect. Reply to the microcomputer 400.

Next, as shown in FIG. 7 (c), the viewer inputs the required amount according to the screen 860 displayed by the application for depositing money.

The microcomputer 400 transfers information such as the account number, personal identification number, account balance, etc. encrypted by the master key 631 to the modem 570 from the electronic currency control device 640 in the IC card 150, and controls the modem 570. Receiving server 27 in customer management center 170 for electronic money remittance request
Upload to 0. The information transmitted from the receiving terminal 130 to the customer management center 170 at this time is the information included in the information about the processing of the electronic currency described in the claims of the present application.

Receiving server 270 receives each receiving terminal 1
The IC card number from 30, the remittance request of the electronic currency 640, the amount, the personal identification number, etc. are extracted, decrypted with the master key 345, and transferred to the customer information management device 280.

The individual information generating device 290 is responsive to the control information from the customer information managing device 280 in response to the customer information managing device 2
The customer information output by 80 is used to make an inquiry to the financial institution 180, receive a predetermined electronic currency, associate each of the IC card numbers with each other, the individual information of each, and the work key issued by the work key generation device 370. (Kw) is multiplexed and individual encrypted information 330 including electronic currency is output.

At this time, the individual information generated by the individual information generating device 280 becomes the individual information including the information about the electronic currency described in the claims of the present application.

Then, the receiving terminal 130 receives the individual encrypted information 330 including the electronic currency to replenish the electronic currency stored in the memory 641 in the IC card 150. That is, the electronic currency control device 640 rewrites the information about the electronic currency stored in the memory 641 based on the received electronic currency.

Further, the receiving terminal 130 already on the market is
It has a function of rewriting the program stored in the flash memory 450 in the receiving terminal 130 using the radio waves of the broadcasting satellite 110. Moreover, since the program capacity for electronic currency settlement is not large, the receiving terminal 130
It can be stored in the free space of the internal flash memory 450.

In the present embodiment, by downloading a program compatible with electronic currency payment by the radio waves of the broadcasting satellite 110, it is possible to make electronic currency payment without replacing the receiving terminal 130 and not burdening the viewer with expenses. It is possible to move to another receiving terminal 130.

In the example shown in FIG. 6, the electronic currency settlement is performed by using the interactive application linked to the TV image. However, by sending the interactive application at all times, the interactive application not linked to the TV image is displayed. It is also possible to make electronic currency payments using the application.

The case where the present invention is applied to a digital broadcasting apparatus for transmitting electronic currency in a digital broadcasting system has been described. However, other digital broadcasting such as cable television, optical fiber, ADSL (Asyncronono) is used.
us Digital Subscriber Lin
It is also applicable to digital broadcasting using e).

In the above embodiment, the IC card is not particularly limited, but the IC card is the receiving terminal 13
0 may be a contact type or a non-contact type.

In the above embodiment, electronic currency is used for electronic payment such as purchase of merchandise. However, electronic payment using electronic currency may be performed in billing processing for viewing a broadcast, for example.

As described above, by applying the present invention, the electronic currency is attached to the individual encrypted information which is individually generated and transmitted for each receiving terminal, and the individual encrypted information is transmitted at low cost. It is possible to provide a digital broadcasting system for transmitting electronic currency that can realize an electronic currency settlement service linked with digital broadcasting that can exchange and settle electronic currency while maintaining the same.

In addition, it is possible to provide a smooth electronic currency settlement environment by using a receiving terminal already on the market and cooperating with an interactive application without imposing a new economic burden on the user.

[0171]

According to the present invention, the electronic currency is attached to the individual encrypted information which is individually generated and transmitted for each receiving terminal and transmitted, so that the confidentiality can be maintained at a low cost.
It is possible to provide a digital broadcasting system for transmitting electronic currency that can realize an electronic currency settlement service linked with digital broadcasting that can exchange and settle electronic currency.

In addition, it is possible to provide a smooth electronic currency settlement environment by linking with the interactive application without using the receiving terminal already on the market and imposing a new economic burden on the user.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an embodiment of a digital broadcasting system according to the present invention.

2 is a block diagram showing the internal configuration of a broadcast center 100 and a customer management center 170 shown in FIG.

FIG. 3 is a block diagram showing an internal configuration of the encrypted information generating device 300 shown in FIG.

4 is a block diagram showing an internal configuration of a receiving terminal 130 shown in FIG.

5 is a block diagram showing an internal configuration of the IC card 150 shown in FIG. 1. FIG.

FIG. 6 is an operation schematic diagram showing an execution operation of electronic currency settlement by an application program in one embodiment of the digital broadcasting system according to the present invention.

FIG. 7 is an operation schematic diagram showing an execution operation of replenishing electronic currency by an application program in one embodiment of the digital broadcasting system according to the present invention.

[Explanation of symbols]

100 broadcasting center 110 broadcasting satellite 120 parabolic antenna 130 receiving terminal 140 television 150 IC card 160 public telephone line network 170 customer management center 180 financial institution 200 video server 210 compression device 220 multiplexing device (multiplexing means) 221 program information Generation device 222 Two-way data server 230 Encryption device (third encryption means) 240 Modulation device (modulation means) 250 Broadcast wave output terminal 260 Public line connection terminal 270 Reception server (reception means) 280 Customer information management device 290 Individual Information generating apparatus (individual information generating means) 300 Encryption information generating apparatus 310 Encryption key 320 Common encryption information 330 Individual encryption information 340 Master key generating apparatus (master key generating means) 345 Master key 350 EMM multiplexing apparatus 360 EMM encryption Avatar (Second encryption means) 370 Work key generation device (work key generation means) 380 Scramble key generation device (scramble key generation means) 390 ECM encryption device (first encryption means) 400 Microcomputer (reception terminal transmission means) ) 410 key 420 LED 430 remote controller 440 memory (recording medium) 450 flash memory (recording medium) 460 system bus 470 tuner 480 descrambler 500 transport decoder 510 MPEG2 decoder 520 audio DAC 530 video encoder 540 antenna input terminal 550 audio output terminal 560 Video output terminal 570 Modem 580 Line connection terminal 600 Serial I / F 610 Decoding device 620 EMM decoding device (decoding means) 630 Memory (recording medium) 631 Master key 640 Electronic communication Control device (electronic currency control device) 641 Memory (IC card storage device) 650 Contract information control device 651 Memory 660 Viewing contract determination device 700 Normal television image 710 image 720 button 730 selected button 740 image 750 PIN code input field 760 Image 800 Normal TV image 810 Image 820 Button 830 Selected button 840 Image 850 PIN code input field 860 Image

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G06F 17/60 ZEC G06F 17/60 ZEC G06K 17/00 G06K 17/00 L 19/00 H04H 1/00 F H04H 1/00 B42D 15/10 521 H04L 9/08 G06K 19/00 Q 9/10 H04L 9/00 621A // B42D 15/10 521 601D 601B (72) Inventor Kayo Hayashi 2-chome, Shibuya, Tokyo 15 No. 1 Incorporated company Sky Perfect Communications (72) Inventor Koji Hasegawa 2-15-1, Shibuya, Shibuya-ku, Tokyo Incorporated Sky Perfect Communications (72) Inventor Mitsuyo Iwata Shibuya-ku, Tokyo 2-15-1 Shibuya Stock Perfect Sky Communicator F-Term in Shotons (reference) 2C005 MB10 SA03 5B035 BB09 BC00 5B058 CA01 YA20 5C064 BB01 BB07 BC20 BD02 BD04 BD08 BD09 5J104 AA16 EA15 MA05 NA35 PA12 (54) [Title of Invention] Electronic currency of digital broadcasting system and digital broadcasting system Usage method, receiving terminal, IC card, electronic currency usage program, and computer-readable recording medium recording the electronic currency usage program

Claims (40)

[Claims] 1. A customer management center for managing information of at least one customer, a broadcasting center for broadcasting information transmitted from the customer management center, and a receiving terminal for receiving information transmitted from the broadcasting center. Is a digital broadcasting system including at least one IC card for exchanging information with the receiving terminal, the IC card storing information related to electronic currency.
C card storage means, the receiving terminal comprises receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, the customer management center, the reception A digital broadcasting system comprising a receiving means for receiving information transmitted from a terminal and performing the processing. 2. At least one of the customer management center and the broadcasting center, individual information generation means for generating individual information of a customer, scramble key generation means for generating a scramble key, and work for generating a work key. Key generation means, master key generation means for generating the same master key as the master key stored in the IC card, first encryption means for encrypting the scramble key with the work key, and the work key And a second encryption unit that encrypts the individual information with the master key, the information encrypted by the first encryption unit and the information encrypted by the second encryption unit are multiplexed. And a third encryption unit that encrypts the information multiplexed by the multiplexing unit with the scramble key. And a modulation means for modulating the information encrypted by the third encryption means to transmit the information, wherein the processing instructed by the receiving terminal is replenishment of electronic currency to the IC card. The digital broadcasting system according to claim 1, wherein the individual information generating means includes information on electronic currency to be transmitted to the receiving terminal in the individual information. 3. The IC card, wherein the IC card is based on a decryption unit that decrypts information received by the receiving terminal with a master key, and information about electronic currency included in the individual information output from the decryption unit. The digital broadcasting system according to claim 2, further comprising an electronic currency control unit that rewrites information about the electronic currency stored in the storage unit. 4. When the processing instructed by the receiving terminal is electronic payment using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. The information corresponding to the electronic payment is created based on the stored information about the electronic currency, the created information is encrypted by using the master key and output, and the receiving terminal outputs from the IC card. 4. The digital broadcasting system according to claim 1, wherein the encrypted encrypted information corresponding to the electronic payment is transmitted to the customer management center by using the receiving terminal transmitting means. . 5. The customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving unit.
Digital broadcasting system described in. 6. A customer management center for managing information of at least one customer, a broadcasting center for broadcasting information transmitted from the customer management center, and a receiving terminal for receiving information transmitted from the broadcasting center. Is a method of using electronic currency in a digital broadcasting system having at least one IC card for exchanging information with the receiving terminal, the IC card being an IC card storing means. Storing information on electronic currency in the receiving terminal transmitting means of the receiving terminal, transmitting information on processing of the electronic currency to the customer management center via the network; A receiving step of receiving the information transmitted from the receiving terminal; and the customer management center, Based on the information that signal means receives, the method of use of the electronic money in a digital broadcasting system characterized by comprising a step of performing a process of electronic currency. 7. An individual information generating means generates the individual information of the customer, a scramble key generating means generates a scramble key, a work key generating means generates a work key, and a master key. A step in which the key generation means generates the same master key as the master key stored in the IC card; a step in which the first encryption means encrypts the scramble key with the work key; An encryption means encrypts the work key and the individual information with the master key; and a multiplexing means uses the information encrypted by the first encryption means and the second encryption means. Multiplexing the information encrypted by the third encryption means, the third encryption means encrypts the information multiplexed by the multiplexing means with the scramble key, and the change of the broadcasting center. Means for transmitting the information encrypted by the third encryption means, wherein the processing instructed by the receiving terminal is replenishment of electronic currency to the IC card, the individual information 7. The method of using electronic currency in a digital broadcasting system according to claim 6, wherein the generating means includes a step of including information on electronic currency to be transmitted to the receiving terminal in the individual information. 8. A step in which the decryption means of the IC card decrypts the information received by the receiving terminal with a master key, and an electronic currency control means of the IC card uses the individual information output from the decryption means. 8. The method of using electronic currency in a digital broadcasting system according to claim 7, further comprising the step of rewriting information about electronic currency stored in the IC card storage means based on information about electronic currency included. 9. When the processing instructed by the receiving terminal is electronic payment using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. The method further comprises a step of creating information corresponding to the electronic payment based on the stored information about electronic currency, and a step of encrypting the created information using the master key and outputting the encrypted information. 9. The receiving terminal transmitting means comprises a step of transmitting the encrypted information corresponding to the electronic payment output from the IC card to the customer management center. A method of using electronic currency in the digital broadcasting system according to the item. 10. The customer management center comprises a step of performing the electronic payment based on the information corresponding to the electronic payment received by the receiving means.
A method of using electronic currency in the digital broadcasting system described in. 11. Information transmitted from at least one customer management center for managing customer information and a broadcast center for broadcasting information transmitted from the customer management center via a network. Is a receiving terminal that receives information and exchanges information with an IC card, wherein the IC card stores information regarding electronic currency.
C card storage means, the receiving terminal comprises receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, the customer management center, the reception A receiving terminal comprising a receiving means for receiving the information transmitted from the terminal and performing the processing. 12. At least one of the customer management center and the broadcasting center, individual information generating means for generating individual information of a customer, scramble key generating means for generating a scramble key, and work for generating a work key. Key generation means, master key generation means for generating the same master key as the master key stored in the IC card, first encryption means for encrypting the scramble key with the work key, and the work key And a second encryption unit that encrypts the individual information with the master key, the information encrypted by the first encryption unit and the information encrypted by the second encryption unit are multiplexed. And a third encryption unit for encrypting the information multiplexed by the multiplexing unit with the scramble key. And a modulation unit that modulates to transmit the information encrypted by the third encryption unit, and the process instructed by the receiving terminal is replenishment of electronic currency to the IC card. The receiving terminal according to claim 11, wherein the individual information generating means includes information on electronic currency to be transmitted to the receiving terminal in the individual information. 13. The IC card, wherein the IC card is based on a decryption unit that decrypts information received by the receiving terminal with a master key, and information about electronic currency included in the individual information output from the decryption unit. 13. The receiving terminal according to claim 12, further comprising an electronic currency control unit that rewrites information about electronic currency stored in the storage unit. 14. When the processing instructed by the receiving terminal is electronic payment using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. The information corresponding to the electronic payment is created based on the stored information about the electronic currency, the created information is encrypted by using the master key and output, and the receiving terminal outputs from the IC card. 14. The receiving terminal according to claim 11, wherein the encrypted information corresponding to the electronic payment is transmitted to the customer management center by using the receiving terminal transmitting means. 15. The customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving unit.
The receiving terminal according to 4. 16. A customer management center for managing information of at least one customer, a broadcasting center for broadcasting information transmitted from the customer management center, and a receiving terminal for receiving information transmitted from the broadcasting center. Is an IC card for exchanging information with the receiving terminal in a digital broadcasting system mutually connected by a network, wherein the IC card stores information about electronic currency I
C card storage means, the receiving terminal comprises receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, the customer management center, the reception An IC card comprising a receiving means for receiving information transmitted from a terminal and performing the above processing. 17. At least one of the customer management center and the broadcasting center, individual information generating means for generating individual information of a customer, scramble key generating means for generating a scramble key, and work for generating a work key. Key generation means, master key generation means for generating the same master key as the master key stored in the IC card, first encryption means for encrypting the scramble key with the work key, and the work key And a second encryption unit that encrypts the individual information with the master key, the information encrypted by the first encryption unit and the information encrypted by the second encryption unit are multiplexed. And a third encryption unit for encrypting the information multiplexed by the multiplexing unit with the scramble key. And a modulation unit that modulates to transmit the information encrypted by the third encryption unit, and the process instructed by the receiving terminal is replenishment of electronic currency to the IC card. The IC card according to claim 16, wherein the individual information generating means includes information on electronic currency to be transmitted to the receiving terminal in the individual information. 18. Decryption means for decrypting the information received by the receiving terminal with a master key, and the information stored in the IC card storage means based on the electronic currency information included in the individual information output from the decryption means. 18. The IC card according to claim 17, further comprising an electronic currency control unit that rewrites information about the electronic currency that is stored. 19. When the processing instructed by the receiving terminal is electronic settlement using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. The information corresponding to the electronic payment is created based on the stored information about the electronic currency, the created information is encrypted by using the master key and output, and the receiving terminal outputs from the IC card. 19. The IC according to claim 16, wherein the encrypted information corresponding to the electronic payment is transmitted to the customer management center by using the receiving terminal transmitting means.
card. 20. The customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving unit.
The IC card according to item 9. 21. At least one or more customer management center for managing customer information, and a broadcast center for broadcasting information transmitted from the customer management center, connected by a network, and information transmitted from the broadcast center. Is a program for using electronic currency, which is applied to a receiving terminal that receives information and exchanges information with an IC card, wherein the IC card stores information related to electronic currency.
A C card storing means, and a step of causing the receiving terminal to function as a receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, the customer management center Is a program for utilizing electronic currency, comprising a receiving unit for receiving information transmitted from the receiving terminal, and performing the above process. 22. At least one of the customer management center and the broadcasting center, individual information generating means for generating individual information of a customer, scramble key generating means for generating a scramble key, and work for generating a work key. Key generation means, master key generation means for generating the same master key as the master key stored in the IC card, first encryption means for encrypting the scramble key with the work key, and the work key And a second encryption unit that encrypts the individual information with the master key, the information encrypted by the first encryption unit and the information encrypted by the second encryption unit are multiplexed. And a third encryption unit for encrypting the information multiplexed by the multiplexing unit with the scramble key. And a modulation unit that modulates to transmit the information encrypted by the third encryption unit, and the process instructed by the receiving terminal is replenishment of electronic currency to the IC card. 22. The electronic currency utilization program according to claim 21, wherein the individual information generating means includes information on electronic currency to be transmitted to the receiving terminal in the individual information. 23. The IC card, wherein the IC card is based on a decryption unit that decrypts information received by the receiving terminal with a master key, and information about electronic currency included in the individual information output from the decryption unit. 23. The electronic currency utilization program according to claim 22, further comprising: electronic currency control means for rewriting information about the electronic currency stored in the storage means. 24. When the processing instructed by the receiving terminal is electronic payment using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. Information corresponding to the electronic payment is created based on the stored information about electronic currency, the created information is encrypted by using the master key and output, and output from the IC card to the receiving terminal. 22. A step of causing a process of transmitting the encrypted information corresponding to the encrypted electronic payment to the customer management center by using the receiving terminal transmitting means is provided.
24. The electronic currency utilization program according to any one of items 23 to 23. 25. The customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving unit.
The electronic currency utilization program described in 4. 26. The electronic currency utilization program according to claim 21, wherein the program is recorded on a recording medium of the receiving terminal by being transmitted from the broadcasting center. 27. At least one customer management center for managing customer information, a broadcasting center for broadcasting information transmitted from the customer management center, and a receiving terminal for receiving information transmitted from the broadcasting center. Is an electronic currency utilization program applied to an IC card for exchanging information with the receiving terminal in a digital broadcasting system in which are connected to each other via a network, wherein the IC card stores information about electronic currency. Do I
C card storage means, the receiving terminal comprises receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, the customer management center, the reception A receiving means for receiving the information transmitted from the terminal is provided to perform the processing, and at least one of the customer management center and the broadcasting center, an individual information generating means for generating individual information of the customer, and a scramble key. , A work key generation means for generating a work key, a master key generation means for generating the same master key as the master key stored in the IC card, and the scramble key as the work key. A first encryption means for encrypting the work key and the individual information by the master key Second encryption means, multiplexing means for multiplexing the information encrypted by the first encryption means and information encrypted by the second encryption means, and multiplexing by the multiplexing means Third encryption means for encrypting the encrypted information by the scramble key, and the broadcasting center comprises a modulation means for modulating the information encrypted by the third encryption means. When the processing instructed by the receiving terminal is replenishment of electronic currency to the IC card, the individual information generating means includes information on electronic currency to be transmitted to the receiving terminal in the individual information, Based on the decryption means for decrypting the information received by the receiving terminal with the master key, and the information about the electronic currency included in the individual information output from the decryption means. An electronic currency utilization program, characterized by comprising a step of functioning as electronic currency control means for rewriting information about electronic currency stored in the IC card storage means. 28. When the processing instructed by the receiving terminal is electronic payment using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. The information corresponding to the electronic payment is created based on the stored information about the electronic currency, the created information is encrypted by using the master key and output, and the receiving terminal outputs from the IC card. 28. The electronic currency utilization program according to claim 27, wherein the encrypted information corresponding to the electronic payment is transmitted to the customer management center by using the receiving terminal transmitting means. 29. The customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving unit.
The electronic currency utilization program described in 8. 30. The electronic currency utilization program according to claim 27, wherein the program is recorded in the recording medium of the IC card by being transmitted from the broadcasting center. 31. Information transmitted from at least one customer management center for managing customer information and a broadcast center for broadcasting information transmitted from the customer management center via a network. Is a computer-readable recording medium recording an electronic currency utilization program applied to a receiving terminal that receives information and exchanges information with an IC card, wherein the IC card stores information related to electronic currency. I to store
A C card storing means, and a step of causing the receiving terminal to function as a receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, the customer management center Is a computer-readable recording medium recording an electronic currency utilization program, characterized by comprising a receiving means for receiving the information transmitted from the receiving terminal. 32. At least one of the customer management center and the broadcasting center, individual information generation means for generating individual information of a customer, scramble key generation means for generating a scramble key, and work for generating a work key. Key generation means, master key generation means for generating the same master key as the master key stored in the IC card, first encryption means for encrypting the scramble key with the work key, and the work key And a second encryption unit that encrypts the individual information with the master key, the information encrypted by the first encryption unit and the information encrypted by the second encryption unit are multiplexed. And a third encryption unit for encrypting the information multiplexed by the multiplexing unit with the scramble key. And a modulation unit that modulates to transmit the information encrypted by the third encryption unit, and the process instructed by the receiving terminal is replenishment of electronic currency to the IC card. 32. The computer-readable record recording the electronic currency utilization program according to claim 31, wherein the individual information generating unit includes information about electronic currency to be transmitted to the receiving terminal in the individual information. Medium. 33. The IC card, wherein the IC card is based on a decryption unit that decrypts information received by the receiving terminal with a master key, and information about electronic currency included in the individual information output from the decryption unit. 33. A computer-readable recording medium recording an electronic currency utilization program according to claim 32, further comprising: electronic currency control means for rewriting information about electronic currency stored in the storage means. 34. When the processing instructed by the receiving terminal is electronic payment using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. Information corresponding to the electronic payment is created based on the stored information about electronic currency, the created information is encrypted by using the master key and output, and output from the IC card to the receiving terminal. 32. The method according to claim 31, further comprising a step of causing the customer management center to transmit the encrypted information corresponding to the electronic settlement, using the receiving terminal transmitting means.
34. A computer-readable recording medium on which the electronic currency utilization program according to any one of 1 to 33 is recorded. 35. The customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving unit.
A computer-readable recording medium on which the electronic currency utilization program according to 4 is recorded. 36. Use of electronic currency according to any one of claims 31 to 35, wherein the electronic currency use program is recorded in a recording medium by being transmitted from the broadcasting center. A computer-readable recording medium recording a program. 37. At least one customer management center for managing customer information, a broadcasting center for broadcasting information transmitted from the customer management center, and a receiving terminal for receiving information transmitted from the broadcasting center. Is a computer-readable recording medium recording an electronic currency utilization program applied to an IC card for exchanging information with the receiving terminal in a digital broadcasting system in which The card stores information about electronic currency I
C card storage means, the receiving terminal comprises receiving terminal transmitting means for transmitting information about processing of the electronic currency to the customer management center via the network, the customer management center, the reception A receiving means for receiving the information transmitted from the terminal is provided to perform the processing, and at least one of the customer management center and the broadcasting center, an individual information generating means for generating individual information of the customer, and a scramble key. , A work key generation means for generating a work key, a master key generation means for generating the same master key as the master key stored in the IC card, and the scramble key as the work key. A first encryption means for encrypting the work key and the individual information by the master key Second encryption means, multiplexing means for multiplexing the information encrypted by the first encryption means and information encrypted by the second encryption means, and multiplexing by the multiplexing means Third encryption means for encrypting the encrypted information by the scramble key, and the broadcasting center comprises a modulation means for modulating the information encrypted by the third encryption means. When the processing instructed by the receiving terminal is replenishment of electronic currency to the IC card, the individual information generating means includes information on electronic currency to be transmitted to the receiving terminal in the individual information, Based on the decryption means for decrypting the information received by the receiving terminal with the master key, and the information about the electronic currency included in the individual information output from the decryption means. A computer-readable recording medium in which a program for utilizing electronic currency is recorded, the method including a step of functioning as electronic currency control means for rewriting information about electronic currency stored in the IC card storage means. 38. When the processing instructed by the receiving terminal is electronic payment using electronic currency stored in the IC card, the electronic currency control means of the IC card stores in the IC card storage means. The information corresponding to the electronic payment is created based on the stored information about the electronic currency, the created information is encrypted by using the master key and output, and the receiving terminal outputs from the IC card. 38. The computer-readable program recorded with the electronic currency utilization program according to claim 37, characterized in that the encrypted information corresponding to the electronic payment is transmitted to the customer management center by using the receiving terminal transmitting means. Possible recording medium. 39. The customer management center performs the electronic payment based on the information corresponding to the electronic payment received by the receiving unit.
A computer-readable recording medium recording the electronic currency utilization program according to item 8. 40. Use of electronic currency according to claim 37, wherein the electronic currency use program is recorded in a recording medium by being transmitted from the broadcasting center. A computer-readable recording medium recording a program.