JP2003101988A - Content data distribution system, data transmitter, and receiving and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a content data distribution system capable of reducing a distribution cost and a working cost and quickly selling contents at a low cost by distributing moving image contents of a large capacity by utilizing a network and enabling a user to easily record them in a recording medium and view them in sales of digital contents utilizing a network technique. SOLUTION: A data transmitter and a receiving and reproducing device are connected by a broadcasting line of a wide band such as a broadcasting line and a security line whose reliability is higher than that such as a telephone line. In the case that the user orders content data, the data transmitter multiplexes the order-received content data on normal broadcasting data in a form capable of direct writing to the recording medium 111 and distributes them as multiplexed data. A receiving and reproducing device side receives the multiplexed data, separates the content data, and writes them in the recording medium 111.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a content data distribution system that distributes and sells digital content data using a broadcasting line or a communication line, and a data transmission device and a reception / reproduction device that compose the system.

[0002]

2. Description of the Related Art Conventionally, long-time moving image contents such as movies are mainly sold in package media, and processing costs for packages and distribution costs for sales are added to the unit price for sale. . However, due to recent developments in network technology and digital technology, this sales form has begun to be reviewed, and a mechanism for accepting orders from users via the network has been established.
The distribution form is being simplified. Also, due to the digitization of content data to be sold, download sales are beginning to be performed through networks that are not packaged. Since these are mainly done using communication lines, they are not applied in the case of large-capacity video contents due to the problem of line capacity, and currently only sales orders are accepted. This form is still being sold as a package. Attempts to download and sell via networks are currently limited to still image contents and music data that have a small capacity.

Japanese Patent Laid-Open No. 2000-152209 discloses a method of selling still image contents through a network, which will be briefly described below with reference to the drawings. FIG. 9 is a schematic diagram showing a conventional still image content sales system using a network. The sales system shown in FIG. 9 is a content sales management device 9
01, the content transmission terminal 903, and a plurality of content selling terminals 904 are connected by a communication line 902 to sell the content.

The operation of the still image content selling system configured as described above will be described. The content sales management device 901 collectively manages still image contents for sale as a server image management table. The content transmission terminal 903 periodically uploads the still image content after the previously uploaded date and time to the content sales terminal 904 through the communication line 902. The content sales terminal 904 transmits the previous download date and time to the content sales management terminal 901 through the communication line 902, and downloads the still image content that has not been downloaded. In addition, the sales form of the still image content is performed by printing out, writing in various card type storage media and various disk type storage media, and by synthesizing the image data by photographing the user with a digital camera, There is a form of selling the combined image data as contents.

As a method of selling digital contents using a line other than a communication line, there is a method of selling game software using a broadcast line. Japanese Patent Application No. 10-529853 discloses a method for selling game software using a broadcasting system or a communication system. This method will be briefly described below with reference to the drawings.

FIG. 10 is a schematic diagram showing a game software sales system using a conventional broadcasting system or communication system. In FIG. 10, 1001 is a broadcast database, 1002 is a startup database management means, 10
Reference numeral 03 is an ordering means, 1004 is an ordering means, 1005 is a data multiplexing means, 1006 is a transmitting means, 1007 is a receiving means, 1008 is a received data separating means, 1009 is a reproducing means, 1010 is a data rewriting means, 1011 is game software, 1012. Is a starting means.

The operation of the sales system configured as above will be described. When the order receiving unit 1003 receives an order from the ordering unit 1004, the startup database management unit 1002 returns a game software startup permission signal through the order receiving unit 1003 to replace or insert a part of the game software data. The starting data of is output to the data multiplexing means 1005. Data multiplexing means 10
Reference numeral 05 multiplexes the start-up data received from the start-up database management means 1002 on the broadcast data in the broadcast database 1001 and delivers it via the transmission means 1006. The game software 1011 owned by the user starts the activation means 10 until receiving the activation permission signal of the game software.
Activation by 12 is prohibited. The user who placed an order for game software from the ordering means 1004 receives the receiving means 100.
In step 7, the data transmitted by the transmission means 1006 is received, and the reception data separation means 1008 separates the activation data. At the same time, the user receives data separating means 1008.
The broadcast data separated by can be viewed by the reproducing means 1009. When the game software start data is received following the game software start permission signal returned from the order receiving unit 1003, the data rewriting unit 1010 replaces or inserts a part of the game data read from the game software 1011 with the start data. Starting means 1012
Output to. The activation means 1012 confirms the activation permission signal of the game software and the contents of the game data, determines whether or not the activation data is inserted and is operating, and if it is not included, takes measures so as not to operate.

[0008]

In the system for distributing and selling digital content data using the broadcasting line and the communication line, it is required to diversify and increase the capacity of the digital content to be sold. With the conventional method using a communication line, it is difficult to sell a large amount of moving image content due to the problem of capacity. In addition, there is a problem that a user needs a dedicated format conversion tool called authoring software in order to record contents on a recording medium even with a method using a large capacity broadcasting line. For example, although it is possible for an individual to create an original moving image disc according to the Video-CD standard at the present time, a dedicated editing tool and authoring tool are required for that purpose, and a high degree of specialized knowledge is required to execute it. Is. It is also possible to create an original video disc according to the DVD-R standard, but it requires a large amount of capital investment and a high degree of expertise,
It is considered virtually impossible. Therefore, at present,
The only method is to distribute most of the data in package media and distribute only some of the data that is the key for booting. This method is also realized only in some game software, but not for long-time moving image contents such as movies. From the above,
The conventional method has a problem that when selling a large amount of moving image content, the same distribution cost and processing cost as those in the past are required, and thus it cannot be sold at a low price.

The present invention has been made to solve the above-mentioned problems, and a large capacity moving image content can be distributed over a network so that a user can easily record it on a recording medium and watch it. An object of the present invention is to provide a content data distribution system that can reduce distribution costs and processing costs and sell contents quickly and at low cost, and a data transmission device and a reception / reproduction device that configure the content data distribution system.

[0010]

In order to solve the above-mentioned problems, a content data distribution system according to claim 1 of the present invention is a content data distribution system for distributing content data, which is broadcast via a broadband broadcasting line. Broadcast data management means for managing broadcast data to be transmitted,
A user receives an order for ordering information of a desired content via a security line which is more reliable than the above-mentioned broadcasting line,
An ordering means for performing a billing process, a content data managing means for managing content data in a format writable on a recording medium, and outputting the content data based on the order information, and the content output from the content data managing means. A data transmission device having data multiplexing means for multiplexing data on the broadcast data and outputting the multiplexed data, and transmitting means for transmitting the multiplexed data via the broadcast line, and via the security line. An ordering means for ordering the ordering information to the data transmission device, a receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexed data is separated into the broadcast data and the content data. Based on the received data separation means and the ordering information, the contents Writing to the recording medium over data or a data writing means for reading, of the content data from the recording medium is written to the content data, the broadcast data or,
A reception / reproduction device having reproduction means for reproducing the content data read out from the recording medium by the data read / write means. As a result, a large amount of video content can be distributed via a broadcasting line, and users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell the content quickly and inexpensively. be able to.

The content data distribution system according to claim 2 of the present invention is a content data distribution system for distributing content data, wherein the broadcast data management means manages broadcast data broadcast via a broadband broadcasting line, and Through a security line that is more reliable than the broadcasting line, the user receives an order for the ordering information of the desired content, an ordering means for performing the billing process, and the content data in a format writable on the recording medium, and the ordering is performed. Content data management means for outputting content data based on information; data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data and outputting as multiplexed data; and the multiplexed data. Means for transmitting data via the above broadcasting line A data transmission device having :, an ordering means for ordering the order information to the data transmission device via the security line, a receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexing. The received data separating means for separating the encrypted data into the broadcast data and the content data, the encryption key storing means for storing a unique encryption key, and the content data based on the ordering information. An encryption unit that encrypts using the encryption key stored in the key storage unit and writing of the encrypted content data into the recording medium, or writing of the encrypted content data Data read / write means for reading the encrypted content data from the recording medium, and the data read / write Deciphering means for deciphering the encrypted content data read from the recording medium by a stage using an encryption key stored in the encryption key storage means, the broadcast data, or And a receiving / reproducing device having a reproducing means for reproducing the decrypted content data. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

A content data distribution system according to claim 3 of the present invention is a content data distribution system for distributing content data, wherein the broadcast data management means manages broadcast data broadcast via a broadband broadcasting line, and Through the security line, which is more reliable than the broadcasting line, the user receives the order information for the desired content, performs the billing process, and creates the encryption key used for the encryption process based on the order information. An order receiving means for returning the content data, a content data managing means for managing the content data in a format writable on a recording medium, and outputting the content data based on the order information, and the content data output from the content data managing means. And an encryption means for encrypting using the above encryption key, A data transmission device having data multiplexing means for multiplexing encoded content data on the broadcast data and outputting the multiplexed data, and transmitting means for transmitting the multiplexed data via the broadcast line; Ordering means for ordering the order information to the data transmission device via a security line and receiving an encryption key for the ordered content; and receiving means for receiving the multiplexed data from the data transmission device, Received data separating means for separating the received multiplexed data into the broadcast data and the encrypted content data, and writing the encrypted content data to the recording medium based on the order information. Alternatively, the encrypted content data is recorded from the recording medium in which the encrypted content data is written. Of reading,
A data reading / writing means, an encryption key storage means for storing the encryption key received by the ordering means, and the encrypted content data read from the recording medium by the data reading / writing means, Decryption means for decrypting using the encryption key stored in the encryption key storage means, the broadcast data, or
And a receiving / reproducing device having a reproducing means for reproducing the content data deciphered by the deciphering means. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

The content data distribution system according to claim 4 of the present invention is a content data distribution system for distributing content data, wherein the broadcast data management means manages broadcast data broadcast via a broadband broadcasting line, and Through the security line, which is more reliable than the broadcasting line, the user receives the order information for the desired content, performs the billing process, and creates the encryption key used for the encryption process based on the order information. And an order receiving means for returning the content data, a content data managing means for managing the content data in a format writable to the recording medium, and outputting the content data based on the order information, and the content data output from the content data managing means. And an encryption means for encrypting using the above encryption key, A data transmission device having data multiplexing means for multiplexing encoded content data on the broadcast data and outputting the multiplexed data, and transmitting means for transmitting the multiplexed data via the broadcast line; Ordering means for ordering the order information to the data transmission device via a security line and receiving an encryption key for the ordered content; and receiving means for receiving the multiplexed data from the data transmission device, Received data separating means for separating the received multiplexed data into the broadcast data and the encrypted content data, and a decrypting means for decrypting the encrypted content data using the encryption key. And writing the decrypted content data to the recording medium based on the order information, or Data read / write means for reading the content data from the recording medium in which the content data is written; and reproducing means for reproducing the broadcast data or the content data read from the recording medium by the data read / write means. And a reception / reproduction device having a. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

A content data distribution system according to claim 5 of the present invention is a content data distribution system for distributing content data, wherein the broadcast data management means manages broadcast data broadcast via a broadband broadcasting line, and An order for the user to receive order information for the desired content via the security line, which is more reliable than the broadcast line, perform billing processing, and send back the write permission signal to the recording medium for the ordered content. Means, content data management means for managing the content data in a format writable on the recording medium, and outputting information relating to the output content data to the order receiving means, and the content data output from the content data management means. Multiplexed and multiplexed with the above broadcast data Data transmission means for outputting as data, and transmission means for transmitting the multiplexed data via the broadcast line, and the ordering information to the data transmission device via the security line. Ordering means for placing an order and receiving a write permission signal for the ordered content, receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexed data in the broadcast data and the content data. Received data separating means for separating, data accumulating means for temporarily accumulating the content data, and writing of the content data accumulated in the data accumulating means to a recording medium based on a write permission signal of the content. Alternatively, the content data may be recorded from the recording medium on which the content data is written. A reception / reproduction device having a data read / write means for reading / writing data, and a reproduction means for reproducing the broadcast data or the content data read from the recording medium by the data read / write means. It is characterized by that. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell content quickly and inexpensively. be able to.

A content data distribution system according to claim 6 of the present invention is a content data distribution system for distributing content data, wherein the broadcast data management means manages broadcast data broadcast via a broadband broadcasting line, and An order for the user to receive order information for the desired content via the security line, which is more reliable than the broadcast line, perform billing processing, and send back the write permission signal to the recording medium for the ordered content. Means, content data management means for managing the content data in a format writable on the recording medium, and outputting information relating to the output content data to the order receiving means, and the content data output from the content data management means To the above broadcast data Ordering the ordering information to the data transmission apparatus via the security transmission line, and a data transmission apparatus having data multiplexing means for outputting the multiplexed data and transmission means for transmitting the multiplexed data via the broadcasting line. Then, the ordering means for receiving the write permission signal of the ordered content, the receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexed data are separated into the broadcast data and the content data. Based on a write permission signal for the content, a received data separation means for storing the content data, a data storage means for temporarily storing the content data, an encryption key storage means for storing a unique encryption key, and the data storage means. The above-mentioned encryption key stored in the encryption key storage means is used for the content data stored in Encryption means for encrypting the encrypted content data, and writing the encrypted content data to the recording medium, or reading the encrypted content data from the recording medium on which the encrypted content data is written, And a decryption of the encrypted content data read from the recording medium by the data read / write means using the encryption key stored in the encryption key storage means. And a receiving / reproducing apparatus having a decryption unit and a reproduction unit for reproducing the broadcast data or the decrypted content data. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

A content data distribution system according to claim 7 of the present invention is a content data distribution system for distributing content data, which manages broadcast data broadcast through a broadband broadcasting line and identifies the broadcast data. Via the broadcast data management means for outputting and the security line which is more reliable than the above-mentioned broadcast line, the ordering means for receiving the ordering information of the desired content by the user and performing the charging process, and the writable in the recording medium. A content data management unit that manages content data in a format and outputs the content data identification information, and an encryption key used for encryption processing by using the identification information of the broadcast data and the identification information of the content data. An encryption key creation means to be created, and the above-mentioned content data management using the above-mentioned encryption key. Encryption means for encrypting the content data output from the means, data multiplexing means for multiplexing the encrypted content data with the broadcast data and outputting it as multiplexed data, and the multiplexed data with the broadcast A data transmission device for transmitting, via the security line, the write permission signal for the ordered content and the encryption key by the order receiving unit. Ordering means for ordering the ordering information to the data transmission apparatus via the, and receiving a write permission signal and an encryption key for the ordered content; and a receiving means for receiving the multiplexed data from the data transmission apparatus. And a received data that separates the received multiplexed data into the broadcast data and the encrypted content data. And other separation means,
Based on data storage means for temporarily storing the encrypted content data, encryption key storage means for storing the encryption key received by the ordering means, and based on a write permission signal for the content, Writing the encrypted content data stored in the data storage means to the recording medium, or reading the encrypted content data from the recording medium in which the encrypted content data is written. A data read / write unit for performing encryption, and an encryption for decrypting the encrypted content data read from the recording medium by the data read / write unit using the encryption key stored in the encryption key storage unit. Deletion means and playback of the broadcast data or the decrypted content data It is characterized in that and a receiving and reproducing device having a reproducing means. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

A content data distribution system according to claim 8 of the present invention is a content data distribution system for distributing content data, which manages broadcast data broadcast via a broadband broadcasting line and identifies the broadcast data. Via the broadcast data management means for outputting and the security line which is more reliable than the above-mentioned broadcast line, the ordering means for receiving the ordering information of the desired content by the user and performing the charging process, and the writable in the recording medium. A content data management unit that manages content data in a format and outputs the content data identification information, and an encryption key used for encryption processing by using the identification information of the broadcast data and the identification information of the content data. An encryption key creation means to be created, and the above-mentioned content data management using the above-mentioned encryption key. Encryption means for encrypting the content data output from the means, data multiplexing means for multiplexing the encrypted content data with the broadcast data and outputting it as multiplexed data, and the multiplexed data with the broadcast A data transmission device for transmitting, via the security line, the write permission signal for the ordered content and the encryption key by the order receiving unit. Ordering means for ordering the ordering information to the data transmission apparatus via the, and receiving a write permission signal and an encryption key for the ordered content; and a receiving means for receiving the multiplexed data from the data transmission apparatus. And a received data that separates the received multiplexed data into the broadcast data and the encrypted content data. And other separation means,
Based on a data storage unit that temporarily stores the encrypted content data separated by the received data separation unit, and a write permission signal for the content,
Decryption means for decrypting the encrypted content data stored in the data storage means using the encryption key, and writing the decrypted content data into the recording medium, or Data read / write means for reading the content data from the recording medium in which the content data is written, and reproducing means for reproducing the broadcast data or the content data read from the recording medium by the data read / write means. And a reception / reproduction device having the following. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and sell content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

A data transmission device according to claim 9 of the present invention is a data transmission device for delivering content data based on ordering information of a content desired by a user, wherein the broadcast data broadcast via a broadband broadcasting line is transmitted. Broadcast data management means for managing and ordering means for receiving the order information and billing processing via a security line which is more reliable than the above broadcasting line, and managing the content data in a format writable on a recording medium. A content data management means for outputting content data based on the order information, a data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data, and outputting the multiplexed data as multiplexed data, The output data of the data multiplexing means is transmitted through the broadcasting line. And signal means, is characterized in that it comprises a. As a result, a large amount of video content can be distributed over a broadcasting line so that users can easily record and view it on a recording medium, reduce distribution costs and processing costs, and distribute content data quickly and inexpensively. it can.

A data transmission apparatus according to claim 10 of the present invention is a data transmission apparatus for delivering content data based on ordering information of content desired by a user,
Broadcast data management means for managing broadcast data broadcast via a broadband broadcasting line, and an ordering information is received through an ordering information through a security line which is more reliable than the broadcasting line, and a charging process is performed, and Order receiving means for creating and returning an encryption key used for encryption processing based on the ordering information, and content for managing content data in a format writable on a recording medium and outputting content data based on the ordering information Data management means, an encryption means for encrypting the content data output from the content data management means using the encryption key, and the encrypted content data is multiplexed with the broadcast data. Data that is output as encoded data, and the output data of the data multiplexing means is sent through the broadcasting line. It is characterized in that it comprises a transmitting unit, a to. As a result, large-capacity video contents can be distributed over a broadcasting line so that users can easily record and watch them on a recording medium, reduce distribution costs and processing costs, and distribute contents quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

A data transmission apparatus according to claim 11 of the present invention is a data transmission apparatus for delivering content data based on ordering information of content desired by a user,
Broadcast data management means for managing broadcast data broadcast via a broadband broadcasting line, and an ordering information is received through the security line which is more reliable than the broadcasting line, and a billing process is performed, and Order receiving means for returning a write permission signal to the recording medium for the ordered content, and content for managing the content data in a format writable on the recording medium and outputting information on the output content data to the order receiving means Data management means, data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data and outputting as multiplexed data, and output data of the data multiplexing means via the broadcast line. And a transmitting means for transmitting. As a result, a large amount of moving image content can be distributed over a broadcasting line so that the user can easily record and view it on a recording medium, reduce distribution costs and processing costs, and distribute the content quickly and inexpensively. ..

A data transmission device according to a twelfth aspect of the present invention is a data transmission device for delivering content data based on ordering information of content desired by a user,
The ordering information is transmitted through a broadcast data management unit that manages broadcast data that is broadcast through a broadband broadcast line and outputs identification information of the broadcast data, and a security line that is more reliable than the broadcast line. An order receiving unit that receives an order and performs a billing process, a content data managing unit that manages content data in a format writable on a recording medium and outputs the content data identification information, an identification information of the broadcast data and the content data. An encryption key creating means for creating an encryption key to be used for an encryption process using the identification information, and an encryption for encrypting the content data output from the content data managing means using the encryption key. And a device for multiplexing the encrypted content data with the broadcast data and outputting the multiplexed data as multiplexed data. Data transmitting means and transmitting means for transmitting the output data of the data multiplexing means via the broadcast line. The order receiving means includes the write permission signal for the ordered content and the encryption key. It is characterized in that it is transmitted via a line. As a result, large-capacity video contents can be distributed over a broadcasting line so that users can easily record and watch them on a recording medium, reduce distribution costs and processing costs, and distribute contents quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data leading to copyright infringement.

According to a thirteenth aspect of the present invention, there is provided a receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein the user is provided with a security line having higher reliability than the broadcasting line. When an ordering means for ordering ordering information for desired content and multiplexed data in which broadcast data and content data are multiplexed are received, the multiplexed data is separated into the broadcast data and the content data. Data separating means, data reading / writing means for writing the content data to a recording medium or reading the content data from the recording medium in which the content data has been written, based on the order information, and the broadcast data. , Or read from the recording medium by the data read / write means. It is characterized in that it comprises a reproducing means for reproducing the content data. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. can do.

A receiving and reproducing apparatus according to claim 14 of the present invention is a receiving and reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein the user is provided with a security circuit which is more reliable than the broadcasting line. When receiving the ordering means for ordering order information of desired content and the multiplexed data in which the broadcast data and the content data are multiplexed, the receiving unit separates the multiplexed data into the broadcast data and the content data. Data separation means, encryption key storage means for storing a unique encryption key, and the content data based on the ordering information, using the encryption key stored in the encryption key storage means. Encrypting means for encrypting, and writing the encrypted content data to a recording medium, or writing the encrypted content data A data read / write unit that reads the encrypted content data from the recording medium that has been inserted, and the encrypted content data read from the recording medium by the data read / write unit, using the encryption key. A decryption means for decrypting using the encryption key stored in the storage means, and a reproduction means for reproducing the broadcast data or the decrypted content data. Is. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data that leads to copyright infringement.

A receiving / reproducing apparatus according to claim 15 of the present invention is a receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user is connected via a security line having higher reliability than the broadcasting line. When ordering order information for desired content and receiving ordering means for receiving an encryption key for the ordered content and multiplexed data in which broadcast data and encrypted content data are multiplexed, Received data separating means for separating the multiplexed data into the broadcast data and the encrypted content data, and writing the encrypted content data to a recording medium based on the ordering information, or The data for reading the encrypted content data from the recording medium in which the encrypted content data is written. Reading and writing means, an encryption key storage means for storing the encryption key received by the ordering unit, the encrypted content data read out from the recording medium by the data reading and writing means,
Decryption means for decrypting using the encryption key stored in the encryption key storage means, the broadcast data,
Alternatively, it is provided with a reproducing means for reproducing the content data deciphered by the deciphering means. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data that leads to copyright infringement.

A receiving and reproducing apparatus according to claim 16 of the present invention is a receiving and reproducing apparatus which receives and reproduces data through a broadband broadcasting line, and a user through a security line which is more reliable than the broadcasting line. When ordering order information for desired content and receiving ordering means for receiving an encryption key for the ordered content and multiplexed data in which broadcast data and encrypted content data are multiplexed, A received data separating means for separating the multiplexed data into the broadcast data and the encrypted content data, and a decrypting means for decrypting the encrypted content data using the encryption key. Writing the decrypted content data to a recording medium or writing the content data based on the order information Data read / write means for reading the content data from the recording medium, and reproducing means for reproducing the broadcast data or the content data read from the recording medium by the data read / write means. It is characterized by. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data that leads to copyright infringement.

According to a seventeenth aspect of the present invention, there is provided a receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein the user is provided with a security line having a higher reliability than the broadcasting line. When ordering the ordering information of the desired content and receiving the ordering means for receiving the write permission signal of the ordered content and the multiplexed data in which the broadcast data and the content data are multiplexed, the multiplexed data is received. Received data separating means for separating the broadcast data and the content data, a data accumulating means for temporarily accumulating the content data, and an accumulating means for accumulating in the data accumulating means based on a write permission signal of the content. Writing the above content data to a recording medium, or writing the above content data Data read / write means for reading the content data from the recording medium, and reproducing means for reproducing the broadcast data or the content data read from the recording medium by the data read / write means. It is a feature. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. can do.

A receiving and reproducing apparatus according to claim 18 of the present invention is a receiving and reproducing apparatus for receiving and reproducing data through a broadband broadcasting line, and ordering information is provided through a security line which is more reliable than the broadcasting line. And an ordering means for receiving a write permission signal for the ordered content, and multiplexed data in which broadcast data and content data are multiplexed, the multiplexed data is received as the broadcast data and the content data. Based on a write permission signal for the content, a received data separation means for separating the content data, a data storage means for temporarily storing the content data, an encryption key storage means for storing a unique encryption key, and The content data stored in the data storage means is used with the encryption key stored in the encryption key storage means. And an encryption means for encrypting the content, and writing the encrypted content data to a recording medium, or reading the encrypted content data from the recording medium on which the encrypted content data is written. A data read / write unit for performing encryption and an encryption for decrypting the encrypted content data read from the recording medium by the data read / write unit using the encryption key stored in the encryption key storage unit. The present invention is characterized by comprising a releasing means and a reproducing means for reproducing the broadcast data or the decrypted content data. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. Can, in addition,
It is possible to prevent unauthorized use of content data that leads to copyright infringement.

A receiving / reproducing apparatus according to claim 19 of the present invention is a receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user is connected via a security line having higher reliability than the broadcasting line. Ordering information for ordering desired content, ordering means for receiving a write permission signal and an encryption key for the ordered content, and multiplexed data in which broadcast data and encrypted content data are multiplexed. When received, the received data separating means for separating the multiplexed data into the broadcast data and the encrypted content data, the data storing means for temporarily storing the encrypted content data, and the ordering. The encryption key storage means for storing the encryption key received by the means, and the data storage based on the content write permission signal. Data read / write for writing the encrypted content data stored in the means to a recording medium, or for reading the encrypted content data from the recording medium in which the encrypted content data is written Means, and decryption means for decrypting the encrypted content data read from the recording medium by the data read / write means using the encryption key stored in the encryption key storage means. And a reproducing means for reproducing the broadcast data or the decrypted content data. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data that leads to copyright infringement.

A receiving / reproducing apparatus according to claim 20 of the present invention is a receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user is connected via a security line having higher reliability than the broadcasting line. Ordering means for ordering desired content, ordering means for receiving a write permission signal and an encryption key for the ordered content, and multiplexed data in which broadcast data and encrypted content data are multiplexed. When received, the received data separating means for separating the multiplexed data into the broadcast data and the encrypted content data, and the encrypted content data separated by the received data separating means are temporarily Based on the data storage means to be stored and the content write permission signal, the data stored in the data storage means is stored in the memory. Decryption means for decrypting encrypted content data using the encryption key, and writing of the decrypted content data to a recording medium, or the content from the recording medium in which the content data is written Data read / write means for reading / writing data, the above broadcast data, or
Reproduction means for reproducing the content data read from the recording medium by the data read / write means. This allows users to easily record and view large-capacity video content delivered via a broadcasting line on a recording medium, reduce distribution costs and processing costs, and deliver content quickly and inexpensively. In addition, it is possible to prevent unauthorized use of content data that leads to copyright infringement.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The embodiment shown here is merely an example, and the present invention is not necessarily limited to this embodiment.

(Embodiment 1) A content data distribution system according to Embodiment 1 of the present invention will be described below with reference to FIG. FIG. 1 is a diagram showing a content data distribution system according to the first embodiment, which is a content data distribution system including a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 1, 101 is an ordering means,
For example, a highly reliable security line such as a telephone line is connected to the order receiving means 102 on the seller side, and the user sends order information of desired contents via the security line. Reference numeral 102 denotes an order receiving means, which receives the order information, performs a charging process, and selects the ordered content data. A content database 103 stores content data in the recording medium 111.
The content data is output based on the ordering information. A broadcast database 104 manages normal broadcast data broadcast via a broadband broadcast line. Reference numeral 105 denotes a data multiplexing unit that multiplexes the content data output from the content database 103 with the broadcast data and outputs the multiplexed data as multiplexed data. Reference numeral 106 denotes a transmission unit that transmits the multiplexed data via a broadcasting line. Reference numeral 107 denotes a receiving means, which receives the multiplexed data transmitted from the transmitting means 106. Reference numeral 108 denotes a received data separating means, which separates the multiplexed data received by the receiving means 107 into original broadcast data and content data. A reproducing unit 109 reproduces the broadcast data separated by the reception data separating unit 108 or the content data read from the recording medium 111 by the data reading / writing unit 110. Reference numeral 110 denotes a data read / write unit that writes the content data separated by the received data separation unit 108 to the recording medium 111 based on the order information, or reads the content data from the recording medium 111 in which the content data is written. I do. A recording medium 111 records content data.

The operation of the content data distribution system configured as described above will be described below. When the user makes an order request for content data to be purchased, on the receiving / reproducing apparatus side, the order information of the content desired by the user is transmitted from the ordering means 101 to the order receiving means 102 via the security line.

Next, on the side of the distributor, the ordering means 102 receives the ordering information, executes the charging process according to the ordering information, and outputs the information of the ordered content data to the content database 103. In the content database 103, the content for sale is stored in a format that can be directly recorded on a recording medium, for example, in the case of a disc medium such as a DVD, in a state called a disc image, and when the order information is received, Content data to be distributed is selected based on the order information,
It is output to the data multiplexing means 105. On the other hand, the broadcast database 104 stores broadcast data that is normally broadcast, and the broadcast data to be broadcast is output to the data multiplexing means 105. It should be noted that this broadcast data can be associated with the content data that is being sold. For example, in the case of selling movie content data, the user's willingness to purchase can be increased by broadcasting a digest (trailer) of the sold content data as a commercial advertisement.

The broadcast data output from the broadcast database 104 and the content data output from the content database 103 are multiplexed by the data multiplexing means 105 and output to the transmitting means 106 as multiplexed data. In addition, when the content data is not output from the content database 103, the above-described multiplexing is not performed, and only the broadcast data is output. And
The data output from the data multiplexing means 105 is transmitted to the receiving / reproducing apparatus side by the transmitting means 106 via a broadband broadcasting line, for example, a satellite broadcasting line.

On the side of the receiving / reproducing apparatus, the multiplexed data transmitted from the transmitting means 106 is received by the receiving means 107 and output to the received data separating means 108. And
The reception data separating means 108 separates the original broadcast data and the content data, and the broadcast data is reproduced by the reproducing means 10.
9, the content data is output to the data read / write means 110, respectively. When the content data is not multiplexed with the data output from the receiving unit 107, the above-described separation is not performed and the received broadcast data is output to the reproducing unit 109 as it is.

The content data separated by the received data separating means 108 is written in the recording medium 111 by the data reading / writing means 110 according to the order information of the content ordered by the ordering means 101. When reproducing the recording medium 111, the data read / write means 11
With 0, the content data recorded on the recording medium 111 is read and output to the reproducing means 109. Here, examples of the recording medium 111 include a disk medium such as a DVD-RAM, a CD-R, and a CD-RW, a semiconductor memory, and the like. Since the received content data is previously transmitted to the recording medium 111 in a directly writable format, the data read / write unit 110 does not need to process the received content data as in the conventional case, but simply writes the content data. Good.

In the reproducing means 109, the broadcast data output from the received data separating means 108 is normally reproduced, and when the data is input from the data reading / writing means 110, the reproducing process is switched to the received data. The content data output from the data read / write unit 110 is reproduced instead of the broadcast data output from the separation unit 108.

In the content data distribution system according to the first embodiment as described above, a data transmission device (sale) is provided by a wide band transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
When the content data is ordered from the user via the security line by connecting the receiver and the playback device (user side), the seller side can directly write the ordered content data to the recording medium 111. Since it is transmitted by being multiplexed with normal broadcast data and the user side separates the content data from the received data and writes it in the recording medium 111 and saves it, a large-capacity moving image content is transmitted via the broadcast line. It can be distributed, and users can easily record and view it on the recording medium 111, and reduce distribution costs and processing costs.
Content can be sold quickly and cheaply. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

(Second Embodiment) A content data distribution system according to a second embodiment of the present invention will be described below with reference to FIG. FIG. 2 is a diagram showing a content data distribution system according to the second embodiment, which is a content data distribution system including a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 2, 201 is an ordering means,
For example, a highly reliable security line such as a telephone line is connected to the order receiving unit 202 on the seller side, and the user transmits ordering information of desired contents via the security line. Reference numeral 202 denotes an order receiving means, which receives the order information, performs a charging process, and selects the ordered content data. A content database 203 stores content data in the recording medium 213.
The content data is output based on the ordering information. Reference numeral 204 denotes a broadcast database, which manages normal broadcast data broadcast via a broadband broadcasting line. Reference numeral 205 denotes a data multiplexing unit that multiplexes the broadcast data with the content data output from the content database 203, and outputs the multiplexed data as multiplexed data. Reference numeral 206 denotes a transmission unit that transmits the multiplexed data via the broadcasting line. A receiving unit 207 receives the multiplexed data transmitted from the transmitting unit 206. Reference numeral 208 denotes a reception data separation means, which separates the multiplexed data received by the reception means 207 into original broadcast data and content data. A reproducing unit 209 reproduces the broadcast data separated by the reception data separating unit 208 or the content data output from the descrambling unit 214. Reference numeral 210 denotes an encryption key storage means, which stores a unique encryption key used for encryption processing. The unique encryption key is, for example, the manufacturing number or product ID of the receiving device. An encryption unit 211 encrypts the content data separated by the reception data separation unit using the encryption key stored in the encryption key storage unit 210. Reference numeral 212 denotes a data read / write unit, which writes the content data encrypted by the encryption unit 211 to the recording medium 213, or the encrypted content data from the recording medium 213 in which the encrypted content data is written. Read out. A recording medium 213 records the encrypted content data. Reference numeral 214 denotes a descrambling unit that deciphers the encrypted content data read from the recording medium 213 by the data read / write unit 215 using the encryption key recorded in the encryption key storage unit 210.

The operation of the content data distribution system configured as described above will be described below. First, when a user makes an order request for content data to be purchased, on the receiving / reproducing apparatus side, the user sends order information of desired content from the ordering unit 201 to the order receiving unit 202 via the security line.

Next, on the side of the distributor, the order receiving means 202 receives the order information, executes the charging process according to the order information, and outputs the information of the ordered content data to the content database 203. In the content database 203, the content for sale is stored in a format which can be directly recorded on a recording medium, for example, in the case of a disc medium such as a DVD, in a state called a disc image, and when the order information is received, Content data to be distributed is selected based on the order information,
It is output to the data multiplexing means 205. On the other hand, the broadcast database 204 stores broadcast data that is normally broadcast, and the broadcast data to be broadcast is output to the data multiplexing means 205. It should be noted that this broadcast data can be made compatible with the content data being sold.
For example, in the case of selling movie content data, the user's willingness to purchase can be increased by broadcasting a digest (trailer) of the sold content data as a commercial advertisement.

The broadcast data output from the broadcast database 204 and the content data output from the content database 203 are multiplexed by the data multiplexing means 205 and output to the transmitting means 206 as multiplexed data. When the content data is not output from the content database 203, only the broadcast data is output. Then, the multiplexed data output from the data multiplexing unit 205 is transmitted by the transmitting unit 206 to the receiving / reproducing apparatus side via a broadband broadcasting line, for example, a satellite broadcasting line.

On the side of the receiving / reproducing apparatus, the multiplexed data transmitted from the transmitting means 206 is received by the receiving means 207 and output to the received data separating means 208. The received data separating means 208 separates the original broadcast data and the content data, and the broadcast data is sent to the reproducing means 209 and the content data is sent to the encrypting means 211. When the content data is not multiplexed with the data output from the receiving unit 207, the received broadcast data is output to the reproducing unit 209 as it is.

The content data separated by the received data separating means 208 is processed by the encrypting means 211 in accordance with the ordering information of the content ordered by the ordering means 201.
The data is encrypted using the unique encryption key stored in the encryption key storage unit 210 and output to the data read / write unit 212. And the encrypted content data is
By the data read / write means 212, the recording medium 213
Written in. Here, examples of the recording medium 213 include disc media such as DVD-RAM, CD-R, and CD-RW, and semiconductor memory.
Since the received content data has been transmitted to the recording medium 213 in a directly writable form in advance, the data read / write unit 212 does not need to process the received content data as in the conventional case, but simply writes the content data. Good.

When the recording medium 213 is reproduced, the encrypted content data recorded on the recording medium 213 is read by the data read / write means 212, output to the decryption means 214, and the decryption means 21.
4, the decryption is performed using the unique encryption key stored in the encryption key storage unit 210, and the decryption is output to the reproduction unit 209.

In the reproducing means 209, the broadcast data output from the received data separating means 208 is normally reproduced, and when the data is input from the descrambling means 214, the reproducing process is switched and the received data is received. Separation means 20
Decryption means 21 instead of broadcast data output from 8
4 is reproduced.

In the content data distribution system according to the second embodiment as described above, a data transmission device (sale) is provided by a wide band transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
When the content data is ordered from the user via the security line by connecting the receiver and the playback device (user side), the seller side can directly write the ordered content data to the recording medium 213. In order to transmit a large amount of moving image content over the broadcasting line, the user side separates the content data from the received data and writes it in the recording medium 213 for storage. Then, the user can easily record and view the contents on a recording medium, reduce distribution costs and processing costs, and sell contents quickly and at low cost.

On the user side, the content data is encrypted, recorded in the recording medium 213 in the encrypted state, and decrypted when the content data is reproduced. It is possible to prevent unauthorized use of connected content data. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

(Third Embodiment) A content data distribution system according to a third embodiment of the present invention will be described below with reference to FIG. FIG. 3 is a diagram showing a content data distribution system according to the third embodiment, which is a content data distribution system including a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 3, 301 is an ordering means,
For example, a highly reliable security line such as a telephone line is connected to the order receiving unit 302 on the seller side, and the user transmits ordering information of desired contents through the security line. Reference numeral 302 denotes an order receiving means, which receives the order information, performs a billing process, and selects the ordered content data. Furthermore, the received order information is used to create an encryption key for the content data, and the content data is returned to the ordering means 301. Reference numeral 303 denotes a content database, which manages the content data in a format that can be directly written to the recording medium 312, and outputs the content data based on the order information. Reference numeral 304 denotes an encryption unit, which uses the encryption key created by the order receiving unit 302 to encrypt the content data output from the content database 303. Reference numeral 305 denotes a broadcast database, which manages normal broadcast data broadcast via a broadband broadcast line. A data multiplexing unit 306 multiplexes the content data encrypted by the encryption unit 304 with the broadcast data. Reference numeral 307 denotes a transmission means, which transmits the multiplexed data via the broadcasting line. A receiving unit 308 receives the multiplexed data transmitted from the transmitting unit 307. Reference numeral 309 denotes a received data separating means, which separates the multiplexed data received by the receiving means 308 into original broadcast data and encrypted content data. A reproducing unit 310 reproduces the broadcast data received by the receiving unit 308 or the content data output from the descrambling unit 314. Reference numeral 311 denotes a data read / write unit that writes the encrypted content data separated by the received data separation unit 309 to the recording medium 312, or encrypts the encrypted content data from the recording medium 312 in which the encrypted content data has been written. The read content data. I do. 31
A recording medium 2 records the encrypted content data. An encryption key storage unit 313 stores the encryption key received by the ordering unit 301. Decryption means 314 deciphers the encrypted content data read from the recording medium 312 by the data read / write means 311 using the encryption key stored in the encryption key storage means 313. .

The operation of the content data distribution system configured as described above will be described below. When the user makes an order request for content data to be purchased, on the receiving / reproducing apparatus side, the order information of the content desired by the user is transmitted from the ordering means 301 to the order receiving means 302 via the security line.

Next, on the side of the distributor, the ordering means 302 receives the ordering information, executes the charging process according to the ordering information, and outputs the information of the ordered content data to the content database 303. Also, the order receiving means 302
Uses the ordering information to create an original encryption key to be used for encryption processing and outputs it to the encryption means 304, and the ordering means 301 through the security line.
Return to. Here, as the order information used for creating the encryption key, for example, the identification information of the ordered content data, the identification information of the user who placed the order, the time information of receiving the order information, and the like can be considered.

In the content database 303, the content to be sold is stored in a format which can be directly recorded on the recording medium 312, for example, in the case of a disk medium such as a DVD, in a state called a disk image. When the information is received, the content data to be distributed is selected based on the order information and is output to the encryption means 304. The content data output from the content database 303 is encrypted by the encryption unit 304 using the encryption key created by the order receiving unit 302, and output to the data multiplexing unit 306. on the other hand,
Broadcast data that is normally broadcast is stored in the broadcast database 305, and the broadcast data to be broadcast is output to the data multiplexing means 306. It should be noted that this broadcast data can be associated with the content data that is being sold. For example, in the case of selling movie content data, the user's willingness to purchase can be increased by broadcasting a digest (trailer) of the sold content data as a commercial advertisement.

The broadcast data output from the broadcast database 305 and the content data encrypted by the encryption means 304 are multiplexed by the data multiplexing means 306 and output to the transmission means 307 as multiplexed data.
When the encrypted content data is not output from the encryption unit 304, only the broadcast data is output. Then, the multiplexed data output from the data multiplexing means 306 is transmitted by the transmitting means 307 to the receiving / reproducing apparatus side via a broadband broadcasting line, for example, a satellite broadcasting line.

On the side of the receiving / reproducing apparatus, the multiplexed data transmitted from the transmitting means 307 is received by the receiving means 308 and output to the received data separating means 309. And
The received data separating unit 309 separates the original broadcast data and the encrypted content data, and the broadcast data is output to the reproducing unit 310 and the encrypted content data is output to the data reading / writing unit 311. In addition,
When the encrypted content data is not multiplexed with the data output from the receiving unit 308, the received broadcast data is output to the reproducing unit 310 as it is.

The encrypted content data separated by the received data separating means 309 is written in the recording medium 312 by the data reading / writing means 311 in accordance with the ordering information of the contents ordered by the ordering means 301. Here, examples of the recording medium 312 include a disk medium such as a DVD-RAM, a CD-R, and a CD-RW, a semiconductor memory, and the like. Since the received content data is encrypted and transmitted in advance in a format that can be directly recorded on the recording medium, the data read / write means 311 does not need to process the received encrypted content data as in the conventional case. There is no need to write anything.

When reproducing the recording medium 312, the content data recorded in the recording medium 312 is read by the data reading / writing means 311 and output to the descrambling means 314. Then, the encrypted content data is decrypted by the decryption means 314 using the encryption key stored in the encryption key storage means 313, and is output to the reproduction means 310.

In the reproducing means 310, normally, the broadcast data output from the received data separating means 309 is reproduced, and when the data is input from the descrambling means 314, the reproducing process is switched to the received data. Separation means 30
Decryption means 31 instead of broadcast data output from 9
4 is reproduced.

In the content data distribution system according to the third embodiment as described above, a data transmission device (sale) is provided by a wide band transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
When the content data is ordered from the user via the security line by connecting the receiver and the playback device (user side), the seller side can write the ordered content data directly to the recording medium 312. In order to transmit a large amount of moving image content over the broadcasting line, the user side separates the content data from the received data and writes it to the recording medium 312 for storage. Then, the user can easily record and view the contents on the recording medium 312, reduce distribution costs and processing costs, and sell the contents quickly and inexpensively.

When the distributor side encrypts the content data and distributes it to the user side, and the user side records the encrypted content data on the recording medium 312 and reproduces the content data. Since it is de-encrypted, it is possible to prevent unauthorized use of content data that would lead to copyright infringement. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

(Embodiment 4) A content data distribution system according to Embodiment 4 of the present invention will be described below with reference to FIG. FIG. 4 is a diagram showing a content data distribution system according to the fourth embodiment, which is a content data distribution system including a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 4, 401 is an ordering means,
For example, a highly reliable security line such as a telephone line is connected to the order receiving unit 402 on the seller side, and the user transmits ordering information of desired contents via the security line. Reference numeral 402 denotes an order receiving means, which receives the order information, performs a billing process, and selects the ordered content data. Further, the received ordering information is used to create an encryption key for the content data, and the content data is returned to the ordering means 401. A content database 403 manages the content data in a format that can be directly written to the recording medium 413, and outputs the content data based on the order information. An encryption unit 404 encrypts the content data output from the content database 403 using the encryption key created by the order receiving unit 402. A broadcast database 405 manages normal broadcast data broadcast via a broadband broadcast line. A data multiplexing unit 406 multiplexes the content data encrypted by the encryption unit 404 with the broadcast data. Reference numeral 407 is a transmission unit that transmits the multiplexed data via the broadcasting line. Reference numeral 408 denotes a receiving unit that receives the multiplexed data transmitted from the transmitting unit 407. Reference numeral 409 denotes a reception data separation unit that separates the multiplexed data received by the reception unit 408 into original broadcast data and encrypted content data. Reference numeral 410 is a reproducing means, which is a received data separating means 40.
Broadcast data and data read / write means 4 separated by 9
The content data read from the recording medium 413 by 12 is reproduced. 411 is a descrambling means,
The encrypted content data separated by the received data separating unit 409 is decrypted using the encryption key received by the ordering unit 401. Reference numeral 412 denotes a data read / write unit, which writes the content data decrypted by the decryption unit 411 to the recording medium 413,
Alternatively, the content data is read from the recording medium 413 in which the content data is written.
A recording medium 413 records the content data.

The operation of the content data distribution system configured as described above will be described below. When the user makes an order request for content data to be purchased, on the receiving / reproducing apparatus side, the ordering information for the content desired by the user is transmitted from the ordering means 401 to the order receiving means 402 via the security line.

Next, on the side of the dealer, the ordering means 402 receives the ordering information, executes the charging process according to the ordering information, and outputs the information of the ordered content data to the content database 403. Also, the order receiving means 402
Uses the order information to create a unique encryption key to be used in the encryption process, and outputs it to the encryption means 404.
Ordering means 40 for this encryption key through a security line
Return to 1. Here, as the order information used for creating the encryption key, for example, the identification information of the ordered content data, the identification information of the user who placed the order, the time information of receiving the order information, and the like can be considered.

In the content database 403, the content to be sold is stored in a format in which it can be directly recorded on the recording medium 413, for example, in the case of a disc medium such as a DVD, in a state called a disc image. When the content is received, the content data is selected based on the order information and is output to the encryption means 404. Then, the encryption means 404 causes the order receiving means 40.
The data is encrypted using the encryption key created in 2 and output to the data multiplexing means 406. On the other hand, the broadcast database 405 stores the broadcast data that is normally broadcast, and the broadcast data to be broadcast is the data multiplexing means 406.
Is output to. It should be noted that this broadcast data can be made compatible with the content data being sold. For example, if you sell movie content data,
By broadcasting a digest (trailer) of the content data being sold as a commercial advertisement, it is possible to increase the user's willingness to purchase.

The broadcast data output from the broadcast database 405 and the content data encrypted by the encryption means 404 are multiplexed by the data multiplexing means 406 and output to the transmission means 407 as multiplexed data.
If the encrypted content data is not output from the encryption means 404, the data multiplexing means 40
6 outputs only broadcast data. Then, the multiplexed data output from the data multiplexing means 406 is transmitted by the transmitting means 40.
7, the data is transmitted to the receiving and reproducing apparatus side via a broadband broadcasting line, for example, a satellite broadcasting line.

On the receiving / reproducing apparatus side, the multiplexed data transmitted from the transmitting means 407 is received by the receiving means 408 and output to the received data separating means 409, and the original broadcast data and encrypted content data are The broadcast data is output to the reproducing unit 410, and the encrypted content data is output to the decrypting unit 411. When the encrypted content data is not multiplexed with the data output from the receiving unit 408, the received data separating unit 409 outputs the received broadcast data as it is to the reproducing unit 410.

The encrypted content data separated by the received data separating means 409 is the deciphering means 41.
In step 1, according to the ordering information of the content ordered by the ordering means 401, the content is decrypted using the encryption key received by the ordering means 401 and output to the data reading / writing means 412.

The content data decrypted by the decryption means 411 is written in the recording medium 413 by the data read / write means 412. Here, examples of the recording medium 413 include a disk medium such as a DVD-RAM, a CD-R, and a CD-RW, a semiconductor memory, and the like. Since the received content data is encrypted in advance in a format that can be directly recorded on the recording medium and transmitted, the data read / write means 412
Does not need to process the received content data as in the prior art, and simply needs to write it.

When reproducing the recording medium 413, the content data recorded in the recording medium 413 is read by the data reading / writing means 412 and output to the reproducing means 410.

In the reproducing means 410, normally, the broadcast data output from the received data separating means 409 is reproduced, and when the data is input from the data reading / writing means 412, the reproducing process is switched to the received data. The content data output from the data read / write unit 412 is reproduced instead of the broadcast data output from the separation unit 409.

In the content data distribution system according to the fourth embodiment as described above, a data transmission device (sale) is provided by a wide band transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
A format in which the receiver and the playback device (user side) are connected, and when the user places an order for content data via the security line, the seller side can directly write the ordered content data to the recording medium 413. In order to transmit a large amount of moving image content over the broadcast line, the user side separates the content data from the received data and writes it in the recording medium 413 for storage. Then, the user can easily record and view the contents on the recording medium 413, reduce distribution costs and processing costs, and sell contents quickly and at low cost.

Also, the distributor side encrypts the content data and distributes it to the user side, and the user side deciphers the encrypted content data and records on the recording medium 4.
Since the data is recorded and reproduced in No. 13, it is possible to prevent the unauthorized use of the content data which leads to copyright infringement. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

(Fifth Embodiment) A content data distribution system according to a fifth embodiment of the present invention will be described below with reference to FIG. FIG. 5 is a diagram showing a content data distribution system according to the fifth embodiment, which is a content data distribution system including a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 5, a content database 501 stores content data in a recording medium 512.
The information regarding the output content data is output to the order receiving unit 510. 5
Reference numeral 02 denotes a broadcast database, which stores normal broadcast data broadcast via a broadband broadcasting line. A data multiplexing unit 503 multiplexes the content data output from the content database 501 with the broadcast data and outputs the multiplexed data as multiplexed data. Reference numeral 504 is a transmission unit that transmits the multiplexed data via a broadcasting line. Fifty
Reference numeral 5 is a receiving means, which receives the multiplexed data transmitted from the transmitting means 504. Reference numeral 506 is a received data separating means, which separates the multiplexed data received by the receiving means 505 into original broadcast data and content data. Fifty
A reproducing unit 7 reproduces the broadcast data separated by the received data separating unit 506 or the content data read from the recording medium 512 by the data reading / writing unit 511. Reference numeral 508 denotes a data storage means, which temporarily stores the content data separated by the received data separation means 506. An ordering unit 509 is connected to the order receiving unit 510 on the seller side by a highly reliable security line such as a telephone line, and the user sends ordering information of desired contents through the security line. . An ordering means 510 receives ordering information, performs a charging process, and sends a write permission signal for the ordered content data to the ordering means 50.
Return to 9. Reference numeral 511 denotes a data read / write means, which writes the content data stored in the data storage means 508 to the recording medium 512 according to the write permission signal of the ordered content data, or
The content data is read from the recording medium 512 in which the content data is written. A recording medium 512 records content data.

The operation of the content data distribution system configured as described above will be described below. On the distributor side, the content database 501
In addition, the content to be sold is stored in a format that can be directly recorded on the recording medium 512, for example, in the case of a disk medium such as a DVD, it is stored in a state called a disk image, and the content data to be sold is data. It is output to the multiplexing means 503. On the other hand, the broadcast database 502 stores broadcast data that is normally broadcast, and the broadcast data to be broadcast is output to the data multiplexing means 503. It should be noted that this broadcast data can be made to correspond to the content data being sold. For example, in the case of selling the content data of a movie, the digest (trailer) of the content data being sold is sold as a commercial advertisement. By broadcasting as, it is possible to increase users' willingness to purchase.

The broadcast data output from the broadcast database 502 and the content data output from the content database 501 are multiplexed by the data multiplexing means 503 and output to the transmitting means 504 as multiplexed data. When the content data is not output from the content database 501, only the broadcast data is output. The data output from the data multiplexing means 503 is transmitted to the receiving / reproducing apparatus by the transmitting means 504 via a broadband broadcasting line, for example, a satellite broadcasting line.

Next, on the receiving and reproducing apparatus side, the transmitting means 50
The multiplexed data transmitted by the receiver 4 is received by the receiving means 505.
And is output to the reception data separation means 506. The received data separating means 506 separates the input multiplexed data into original broadcast data and content data, and outputs the broadcast data to the reproducing means 507 and the content data to the data accumulating means 508. In addition,
When the content data is not multiplexed with the data output from the receiving means 505, the received data separating means 506 reproduces the received broadcast data as it is from the reproducing means 507.
Output to.

The content data separated by the received data separation means 506 is temporarily stored in the data storage means 508.
, And the stored content data is rewritten periodically. Examples of the update mechanism include a method of overwriting the oldest data when the latest content data is distributed, a method of periodically distributing the latest content and rewriting all the data.

Here, when the user makes an order request for the content data to be purchased, the order information of the content desired by the user is transmitted from the ordering means 509 to the order receiving means 510 via the security line. On the side of the distributor, the ordering means 510 receives the ordering information, and confirms with the content database 501 whether or not the ordered content data is distributed. Then, if the confirmation is obtained, the charging process according to the order information is executed, and the write permission signal of the ordered content data is returned to the ordering means 509 of the receiving / reproducing apparatus via the security line.

On the receiving and reproducing apparatus side, the ordering means 509 receives the content data write permission signal from the order receiving means 510, and then the data reading / writing means 511.
Is output to. Then, according to the write permission signal of the content data, the data read / write unit 511 reads the corresponding content data output from the ordering unit 509 from the data storage unit 508 and writes it in the recording medium 512. Here, the recording medium 5
Examples of 12 are, for example, DVD-RAM, CD-R,
There are disk media such as CD-RW and semiconductor memory. Since the received content data is transmitted in advance in a format that can be directly recorded on the recording medium, the data read / write unit 511 does not need to process the received content data, and can simply write it.

When reproducing the recording medium 512, the content data is read from the recording medium 512 by the data read / write means 511 and output to the reproducing means 507. The reproducing means 507 normally reproduces the broadcast data. However, when the data is input from the data reading / writing means 511, the reproduction processing is switched and the data is not the broadcast data output from the received data separating means 506. The content data output from the read / write means 511 is reproduced.

In the content data distribution system according to the fifth embodiment as described above, a data transmission device (sale) is provided by a broadband transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
The receiver and the playback device (user side) are connected to each other, and the seller side directly stores the ordered content data in the recording medium 51.
2 is multiplexed with normal broadcast data in a format that can be written to the second broadcast data, and the user side separates the content data from the received data and stores the data in the data storage means 50.
8 is temporarily stored in the storage medium 8 and written to the recording medium 512 based on the write permission signal of the content data returned from the seller when the user places an order for the content data via the security line. Since it is saved, a large amount of moving image content can be distributed over a broadcasting line so that the user can easily record and view it on the recording medium 512, and the distribution cost and the processing cost are reduced, which is quick and inexpensive. Content can be sold to. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

(Sixth Embodiment) A content data distribution system according to a sixth embodiment of the present invention will be described below with reference to FIG. FIG. 6 is a diagram showing a content data distribution system according to the sixth embodiment, which is a content data distribution system including a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 6, a content database 601 stores content data in a recording medium 614.
The information regarding the output content data is output to the order receiving unit 610. 6
Reference numeral 02 denotes a broadcast database, which stores normal broadcast data broadcast via a broadband broadcasting line. A data multiplexing unit 603 multiplexes the content data output from the content database 601 with the broadcast data and outputs the multiplexed data as multiplexed data. Reference numeral 604 is a transmission unit that transmits the multiplexed data via the broadcasting line. 60
Reference numeral 5 is a receiving means, which receives the multiplexed data transmitted from the transmitting means 604. Reference numeral 606 is a reception data separation means, which separates the multiplexed data received by the reception means 605 into original broadcast data and content data. 60
Reference numeral 7 is a reproduction means, which is the broadcast data separated by the reception data separation means 606 or the recording medium 614.
The content data that has been read out from and decrypted by the decryption means 615 is reproduced. Reference numeral 608 denotes a data storage means, which temporarily stores the content data separated by the received data separation means 606. An ordering unit 609 is connected to the order receiving unit 610 on the seller side by a highly reliable security line such as a telephone line, and the user sends ordering information of desired contents through the security line. . An ordering means 610 receives the ordering information, performs a charging process, and returns a write permission signal for the ordered content data to the ordering means 609. Reference numeral 611 denotes an encryption key storage unit that stores a unique encryption key used for encryption processing, such as a manufacturing number and a product ID of the receiving device. 6
Reference numeral 12 denotes an encryption unit, which encrypts the content data stored in the data storage unit 608 according to the write permission signal for the ordered content data.
Encryption is performed using the encryption key stored in 11. 6
Reference numeral 13 is a data read / write means, which is a recording medium 61 for recording content data encrypted by the encryption means 612.
4 or read the encrypted content data from the recording medium 614 in which the encrypted content data has been written. A recording medium 614 records encrypted content data. Reference numeral 615 denotes a descrambling means, which stores the encrypted content data read from the recording medium 614 by the data read / write means 613 into the encryption key storage means 6
Decryption is performed using the encryption key stored in 11.

The operation of the content data distribution system configured as described above will be described below. On the distributor side, the content database 601 stores the content being sold in a format in which it can be directly recorded on the recording medium 614, for example, in the case of a disc medium such as a DVD, a state called a disc image. The content data to be sold is output to the data multiplexing means 603. On the other hand, the broadcast database 602 stores broadcast data that is normally broadcast, and the broadcast data to be broadcast is output to the data multiplexing means 603. This broadcast data can correspond to the content data being sold. For example, in the case of selling movie content data, the digest (trailer) of the content data being sold is broadcast as a commercial advertisement. By doing so, it is possible to increase the purchasing will of the user.

The broadcast data output from the broadcast database 602 and the content data output from the content database 601 are multiplexed by the data multiplexing means 603 and output to the transmitting means 604 as multiplexed data. In addition, when the content data is not output from the content database 601, the data multiplexing unit 603 outputs only the broadcast data.

The data output from the data multiplexing means 603 is transmitted to the receiving / reproducing apparatus by the transmitting means 604 via a broadband broadcasting line, for example, a satellite broadcasting line.

Next, on the receiving and reproducing apparatus side, the transmitting means 60
The multiplexed data transmitted by the receiver 4 is received by the receiving means 605.
And is output to the reception data separation unit 606. Then, the received data separation unit 606 separates the original broadcast data and the content data, and outputs the broadcast data to the reproduction unit 607 and the content data to the data storage unit 608. The receiving means 605
When the content data is not multiplexed with the data output from the received data, the reception data separation unit 606 outputs the received broadcast data as it is to the reproduction unit 607.

The content data separated by the received data separation means 606 is temporarily stored in the data storage means 608, and the stored content data is
It is rewritten regularly. The update mechanism includes, for example, a method in which the oldest data is overwritten when the latest content data is delivered, a method in which the latest content is collected periodically, and all the delivered data are rewritten.

Here, when the user makes an order request for content data to be purchased, the order information of the desired content is sent from the ordering unit 609 to the order receiving unit 610 via the security line.

On the side of the seller, the ordering means 610 receives the ordering information, and confirms in the content database 601 whether or not the ordered content data is distributed. Then, when the confirmation is obtained, the charging process according to the order information is executed, and the write permission signal of the ordered content data is returned to the ordering means 609 of the receiving / reproducing apparatus via the security line.

On the receiving and reproducing apparatus side, when the ordering unit 609 receives the content data write permission signal from the order receiving unit 610, it is output to the encryption unit 612. Then, in accordance with the content data write permission signal output from the ordering unit 609, the corresponding content data is read from the data storage unit 608,
The data is encrypted using the encryption key stored in the encryption key storage unit 611 and output to the data read / write unit 613.

The encrypted content data is written in the recording medium 614 by the data read / write means 613. Here, examples of the recording medium 614 include disc media such as DVD-RAM, CD-R, and CD-RW, and semiconductor memory. Since the received content data is transmitted in advance in a format that can be directly recorded on the recording medium, the data read / write unit 613 does not need to process the received content data, and only needs to write it.

When reproducing the recording medium 614, the content data is read from the recording medium 614 by the data read / write means 613 and output to the descrambling means 615. Then, the encrypted content data is encrypted by the descrambling means 615, and the encrypted key storage means 61 is operated.
1 is decrypted by using the unique encryption key stored in No. 1 and is output to the reproducing unit 607.

In the reproducing unit 607, the broadcast data output from the received data separating unit 606 is normally reproduced, and when the data is input from the descrambling unit 615, the reproducing process is switched to the received data. Separating means 60
Decryption means 61, not the broadcast data output from 6
The content data output from 5 is reproduced.

In the content data distribution system according to the sixth embodiment as described above, a data transmission device (sale) is provided by a wide band transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
The receiving and reproducing apparatus (user side) are connected to each other, and the seller side directly stores the ordered content data in the recording medium 61.
4 is transmitted in a format that can be written in the normal broadcast data, and the user side separates the content data from the received data to store the data.
8 and temporarily stores it in the recording medium 614 based on the write permission signal of the content data returned from the seller when the user orders the content data via the security line. As a result, large-capacity video contents can be distributed over a broadcasting line so that users can easily record and watch them on a recording medium. Can be sold.

Also, on the user side, the data storage means 608
Since the content data temporarily stored in the HDD is encrypted and then recorded on the recording medium 614 and the decryption is performed when the content data is reproduced, the unauthorized use of the content data that leads to copyright infringement is performed. Can be prevented. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

(Embodiment 7) A content data distribution system according to Embodiment 7 of the present invention will be described below with reference to FIG. FIG. 7 is a diagram showing a content data distribution system according to the seventh embodiment, which is a content data distribution system composed of a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 7, a content database 701 stores content data in a recording medium 714.
In a format that can be directly written to, and the identification information of the content data is output. Reference numeral 702 is a broadcast database, which manages normal broadcast data broadcast via a broadband broadcast line and outputs identification information of the broadcast data.
Reference numeral 703 denotes an encryption key creating means, which creates an encryption key to be used for encryption processing by utilizing the identification information of the content data and the identification information of the broadcast data. An encryption unit 704 encrypts the content data output from the content database 701 using the encryption key created by the encryption key creating unit 703. A data multiplexing unit 705 multiplexes the content data encrypted by the encryption unit 704 with the broadcast data. Reference numeral 706 denotes a transmission unit that transmits the multiplexed data via the broadcasting line. Reference numeral 707 denotes a receiving unit that receives the multiplexed data transmitted from the transmitting unit 706. Reference numeral 708 denotes a received data separating means, which separates the data received by the receiving means 707 into original broadcast data and encrypted content data. Reference numeral 709 denotes a reproduction unit that reproduces the broadcast data separated by the reception data separation unit 708 or the content data decrypted by the decryption unit 716. Reference numeral 710 denotes a data storage unit that temporarily stores the content data separated by the received data separation unit 708. 711 is an ordering means, which is connected to the order receiving means 712 on the seller side by a highly reliable security line such as a telephone line,
The user transmits ordering information for desired contents via the security line. Reference numeral 712 denotes an order receiving means, which receives order information and performs a billing process, and a write permission signal for the ordered content data and an encryption key creating means 703.
The encryption key created by is sent back to the ordering means 711 via the security line. Reference numeral 713 denotes a data read / write unit that writes the encrypted content data stored in the data storage unit 710 to the recording medium 714, or writes the encrypted content data based on the content data write permission signal. The encrypted content data is read from the recording medium 714 in which is written. A recording medium 714 records the encrypted content data. 71
An encryption key storage unit 5 stores the encryption key received by the ordering unit 711. Numeral 716 is a descrambling means, which is used by the data read / write means 713 for recording media
The encrypted content data read from 4
Decryption is performed using the encryption key stored in the encryption key storage unit 715.

The operation of the content data distribution system configured as described above will be described below. On the side of the distributor, the content database 701 stores the content being sold in a format that can be directly recorded on the recording medium 714, for example, in the case of a disk medium such as a DVD, in a state called a disk image. The target content data is output to the encryption means 704. On the other hand, the broadcast database 702 stores broadcast data that is normally broadcast, and the broadcast data to be broadcast is the data multiplexing means 70.
5 is output. This broadcast data can be made to correspond to the content data being sold. For example, in the case of selling movie content data, the digest (trailer) of the content data being sold is broadcast as a commercial advertisement. By doing so, it is possible to increase users' willingness to purchase.

Further, the encryption key creating means 703 uses the identification information of the content data output from the content database 701 and the identification information of the broadcast data output from the broadcast database 702 to generate a unique encryption key. The created content is output to the encryption unit 704 and the order receiving unit 712, and the order receiving unit 712 holds the distributed content information output from the content database 701 and the encryption key used for the encryption.

The content data output from the content database 701 is encrypted using the encryption key created by the encryption key creating means 703 and output to the data multiplexing means 705. And broadcast database 7
The broadcast data output from 02 and the encrypted content data output from the encryption unit 704 are multiplexed by the data multiplexing unit 705 and output to the transmission unit 706 as multiplexed data. The encryption means 704
When the encrypted content data is not output from, the data multiplexing unit 705 outputs only the broadcast data. The data output from the data multiplexing unit 705 is transmitted to the receiving / reproducing apparatus side by the transmitting unit 706 via a broadband broadcasting line, for example, a satellite broadcasting line.

Next, on the receiving / reproducing apparatus side, the multiplexed data is received by the receiving means 707, and the received data separating means 7 is received.
It is output to 08. The reception data separating means 708 separates the input multiplexed data into original broadcast data and encrypted content data, and the broadcast data is reproduced by the reproducing means 70.
9, the encrypted content data is output to the data storage means 710, respectively. It should be noted that if the encrypted content data is not multiplexed with the data output from the receiving means 707, the received data separating means 70
Reference numeral 8 directly outputs the received broadcast data to the reproduction means 709.

The encrypted content data separated by the received data separation means 708 is the data storage means 7
10 is temporarily stored and rewritten regularly. Examples of the update mechanism include a method of overwriting the oldest data when the latest content data is distributed, a method of periodically distributing the latest content and rewriting all the data.

Here, when the user makes an order request for the content data to be purchased, the order information for the desired content is sent from the ordering means 711 to the order receiving means 712 on the seller side via the security line.

On the side of the distributor, the ordering means 712 receives the ordering information, and confirms whether the ordered content data is distributed or not by referring to the distribution information of the content output from the content database 701.
When the confirmation is obtained, the charging process according to the order information is executed, and the write permission signal and the encryption key of the ordered content data are returned to the ordering means 711 of the receiving / reproducing apparatus via the security line.

On the receiving / reproducing apparatus side, the content data write permission signal and the encryption key are received by the ordering means 711, and then the content data write permission signal is sent to the data read / write means 713 and the encryption key is encrypted. It is output to the key storage means 715, respectively. Then, according to the content data write permission signal, the corresponding encrypted content data is read from the data storage means 710 and written in the recording medium 714. Examples of the recording medium 714 include, for example, DVD-RAM and C
There are disk media such as D-R and CD-RW and semiconductor memory. Since the received content data is encrypted in advance in a format that can be directly recorded in the recording medium 714 and transmitted, the data read / write means 7
13 does not need to process the received content data and simply needs to write it.

When reproducing the recording medium 714, the content data is read from the recording medium 714 by the data reading / writing means 713 and is output to the descrambling means 716. Then, the deciphering means 716 deciphers the encrypted content data output from the data reading / writing means 713 using the encryption key stored in the encryption key storage means 715, and outputs it to the reproducing means 709. To be done.

The reproducing means 709 normally reproduces the broadcast data output from the received data separating means 708. However, when the data is input from the descrambling means 716, the reproducing process is switched and reception is performed. Data separation means 70
Decryption means 71 instead of the broadcast data output from 8
The content data output from 6 is reproduced.

In the content data distribution system according to the seventh embodiment as described above, a data transmission device (sale) is provided by a broadband transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
The receiving and reproducing apparatus (user side) are connected to each other, and the seller side directly stores the ordered content data in the recording medium 71.
4 is transmitted in a format that can be written to the normal broadcast data, and the user side separates the content data from the received data and stores it in the data storage means 71.
It is temporarily stored in 0, and when the content data is ordered from the user via the security line, it is written and saved in the recording medium 714 based on the content data write permission signal returned from the seller side. As a result, a large amount of moving image content can be distributed over a broadcasting line so that the user can easily record and view the recording medium 714 on the recording medium 714, and the distribution cost and the processing cost can be reduced, which can be quickly and inexpensively. Content can be sold.

Also, the distributor side encrypts the content data, multiplexes it with the broadcast data for distribution, and the user side records the encrypted content data on the recording medium 714 and reproduces the content data. Since the encryption is decrypted when performing, it is possible to prevent the unauthorized use of the content data, which leads to copyright infringement. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

(Embodiment 8) A content data distribution system according to Embodiment 8 of the present invention will be described below with reference to FIG. FIG. 8 is a diagram showing a content data distribution system according to the eighth embodiment, which is a content data distribution system including a data transmission device on the seller side and a reception / reproduction device on the customer (user) side.

In FIG. 8, a content database 801 stores content data in a recording medium 815.
In a format that can be directly written to, and the identification information of the content data is output. Reference numeral 802 denotes a broadcast database, which manages normal broadcast data broadcast via a broadband broadcast line and outputs identification information of the broadcast data.
Reference numeral 803 denotes an encryption key creating means, which creates an encryption key used for the encryption process based on the identification information of the content data and the identification information of the broadcast data. Reference numeral 804 denotes an encryption unit that encrypts the content data output from the content database 801 using the encryption key created by the encryption key creation unit 803. A data multiplexing unit 805 multiplexes the content data encrypted by the encryption unit 804 with the broadcast data. 806
Is a transmitting means for transmitting the multiplexed data via the broadcasting line. Reference numeral 807 denotes a receiving unit that receives the multiplexed data transmitted from the transmitting unit 806. Reference numeral 808 denotes a reception data separation unit that separates the multiplexed data received by the reception unit 807 into original broadcast data and encrypted content data. Reference numeral 809 denotes reproducing means, which is broadcast data separated by the reception data separating means 808 or recording medium 8 by the data reading / writing means 814.
The content data read from 15 is reproduced. 8
Reference numeral 10 is a data storage means, which is a received data separation means 80.
The content data separated by 8 is temporarily stored. Numeral 811 is an ordering means, which is connected to the order receiving means 812 on the seller side by a highly reliable security line such as a telephone line, and the user sends ordering information of desired contents through the security line. . Reference numeral 812 denotes an order receiving means, which receives ordering information from the ordering means 811 and performs a billing process, and a write permission signal for the ordered content data and an encryption key generating means 80.
The encryption key created in No. 3 is returned to the ordering means 811. Reference numeral 813 is a descrambling means, which is a data storage means 81.
The encrypted content data stored in 0 is decrypted using the encryption key. Reference numeral 814 denotes a data read / write unit 814 that writes the content data decrypted by the decryption unit 813 to the recording medium 815 and the recording medium 8 in which the content data has been written.
The content data is read from 15. 81
A recording medium 5 records content data.

The operation of the content data distribution system configured as described above will be described below. On the side of the distributor, the content database 801 stores the content being sold in a format that can be directly recorded on the recording medium 815, for example, in the case of a disk medium such as a DVD, in a state called a disk image. The target content data is output to the encryption unit 804. On the other hand, the broadcast database 802 stores broadcast data that is normally broadcast, and the data to be broadcast is output to the data multiplexing unit 805. It is also possible to make the broadcast data correspond to the content data being sold. For example, in the case of selling movie content data, the digest (trailer) of the content data being sold is broadcast as a commercial advertisement. By doing so, it is possible to increase users' willingness to purchase.

The encryption key creating means 803 creates an unique encryption key using the identification information of the content data and the identification information of the broadcast data, and outputs it to the encryption means 804 and the order receiving means 812. And the order receiving means 812
Holds the distributed content information output from the content database 801 and the encryption key used to encrypt the content information.

The content data output from the content database 801 is encrypted by the encryption means 804 using the encryption key output from the encryption key creation means 803, and output to the data multiplexing means 805. Then, the data multiplexing means 805 causes the broadcast database 80
The broadcast data output from No. 2 and the encrypted content data output from the encryption unit 804 are multiplexed and output to the transmission unit 806 as multiplexed data.
If the encrypted content data is not output from the encryption means 804, the data multiplexing means 80
5 outputs only broadcast data.

Then, the data output from the data multiplexing means 805 is transmitted to the receiving / reproducing apparatus side by the transmitting means 806 via a broadband broadcasting line, for example, a satellite broadcasting line.

Next, on the side of the receiving / reproducing apparatus, the multiplexed data is received by the receiving means 807, and then separated by the received data separating means 808 into the original broadcast data and the encrypted content data, Broadcast data is reproduced by means of 80
9, the encrypted content data is output to the data storage means 810. When the encrypted content data is not multiplexed with the data output from the receiving means 807, the received data separating means 80
Reference numeral 8 directly outputs the received broadcast data to the reproduction means 809.

The encrypted content data separated by the received data separating means 808 is the data accumulating means 8
It is temporarily stored at 10 and rewritten regularly. Examples of the update mechanism include a method of overwriting the oldest data when the latest content data is distributed, a method of periodically distributing the latest content and rewriting all the data. Here, when the user makes an order request for the content data that the user wants to purchase, the order information for the desired content is sent from the ordering means 811 via the security line to the order receiving means 81 on the seller side.
2 is sent.

On the side of the distributor, the ordering means 812 receives the ordering information, and confirms whether the ordered content data is distributed or not by referring to the content distribution information output from the content database 801. Then, if the confirmation is obtained, the billing process according to the order information is executed, and the write permission signal and the encryption key of the ordered content data are returned to the ordering means 811 of the receiving / reproducing apparatus via the security line. ..

On the receiving and reproducing apparatus side, when the ordering means 811 receives the content data write permission signal and the encryption key from the order receiving means 812, they are output to the decryption means 813. The descrambling means 813 reads the corresponding encrypted content data from the data storage means 810 according to the content data write permission signal output from the ordering means 811, and the ordering means 8
Decryption is performed by using the encryption key output from 11, and the data is output to the data read / write unit 814.

Then, the decrypted content data is written in the recording medium 815 by the data read / write means 814. Examples of the recording medium 815 include disc media such as DVD-RAM, CD-R, and CD-RW, and semiconductor memory. The received content data is recorded in advance in the recording medium 8
Since the data is encrypted in a format that can be directly recorded in 15, and is transmitted, the data read / write unit 814 does not need to process the decrypted content data after reception, and only needs to write it. When reproducing the recording medium 815, the recording medium 8 is read by the data read / write means 814.
The content data is read from 15, and the reproducing means 80 is used.
9 is output.

The reproducing means 809 normally reproduces the broadcast data output from the received data separating means 808. However, when the data is input from the data reading / writing means 814, the reproduction processing is switched and reception is performed. The content data output from the data read / write unit 814 is reproduced instead of the broadcast data output from the data separation unit 808.

In the content data distribution system according to the eighth embodiment as described above, a data transmission device (sales system) is provided with a broadband transmission line such as a broadcasting line and a security line such as a telephone line which is more reliable than the broadcasting line. (Business side)
The receiving and reproducing apparatus (user side) are connected to each other, and the seller side directly stores the ordered content data in the recording medium 81.
5 is multiplexed with normal broadcast data in a format that can be written in 5, and transmitted, and the user side separates the content data from the received data and stores it in the data storage means 81.
It is temporarily stored in 0, and when the content data is ordered from the user via the security line, the content data is written and stored in the recording medium 815 based on the content data write permission signal returned from the seller. As a result, a large amount of moving image content can be distributed by using the broadcasting line and the user can easily record it on the recording medium 815 and watch it. Further, the distribution cost and the processing cost can be reduced, and the user can quickly and inexpensively. Content can be sold.

Further, the distributor side encrypts the content data and then multiplexes it with the broadcast data for distribution, and the user side decrypts the encrypted content data before recording and reproducing on the recording medium 815. Therefore, it is possible to prevent unauthorized use of the content data, which leads to copyright infringement. It should be noted that, in the present embodiment, an example in which moving image content such as a movie is sold has been described, but other music data and game software can be similarly implemented.

[0129]

As described above, according to the present invention, a large amount of moving image content is distributed by using a broadcasting line so that a user can easily record it on a recording medium and watch it. It is possible to reduce costs and processing costs and sell contents quickly and at low cost. Further, by encrypting the content data using the unique encryption key, it is possible to prevent the unauthorized use of the content data, which leads to copyright infringement.

[Brief description of drawings]

FIG. 1 is a block diagram showing a content data distribution system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a content data distribution system according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a content data distribution system according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a content data distribution system according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a content data distribution system according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a content data distribution system according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing a content data distribution system according to a seventh embodiment of the present invention.

FIG. 8 is a block diagram showing a content data distribution system according to an eighth embodiment of the present invention.

FIG. 9 is a diagram showing a conventional still image content network sales system.

FIG. 10 is a diagram showing a conventional network sales system for game software.

[Explanation of symbols]

101, 201, 301, 401, 509, 609, 7
11,811 Ordering means 102,202,302,402,510,610,7
12,812 Order receiving means 103,203,303,403,501,601,7
01,801 Content database 104,204,305,405,502,602,7
02,802 Broadcast database 105,205,306,406,503,603,7
05,805 Data multiplexing means 106, 206, 307, 407, 504, 604, 7
06,806 Transmission means 107, 207, 308, 408, 505, 605, 7
07,807 Receiving means 108,208,309,409,506,606,7
08,808 Received data separation means 109, 209, 310, 410, 507, 607, 7
09,809 reproducing means 110,212,311,412,511,613,7
13,814 data read / write means 111,213,312,413,512,614,7
14,815 Recording media 210,313,611,715 Encryption key storage means 211,304,404,612,704,804 Encryption means 214,314,411,615,716,813 Decryption means 508,608,710 , 810 Data storage means 703, 803 Encryption key generation means 901 Content sales management device 902 Communication line 903 Content transmission terminal 904 Content sales terminal 904 Content sales terminal 1001 Broadcast database 1002 Startup database 1003 Ordering means 1004 Ordering means 1005 Data multiplexing means 1006 Sending means 1007 Receiving means 1008 Received data separating means 1009 Reproducing means 1010 Data rewriting means 1011 Game software 1012 Starting means

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04H 1/02 H04H 1/02 E 5K030 H04L 9/08 H04L 12/18 12/18 H04N 5/76 Z H04N 5/76 5/91 L 5/765 P 5/91 7/08 Z 7/08 7/167 Z 7/081 H04L 9/00 601B 7/167 F Term (reference) 5C052 AA04 AA17 AB03 CC06 CC11 DD04 DD06 5C053 FA13 FA20 FA23 FA27 GA11 GB06 GB11 GB21 JA01 JA21 LA06 LA07 LA15 5C063 AA01 AB03 AB05 AC01 AC05 AC10 CA23 CA36 DA07 DA13 DB10 5C064 BA01 BB01 BB02 BC01 BC06 BC17 BC18 BC22 BC23 BC25 BD02 BD08 BD09 CA14 CB06 NA151111A02 JA01 LD07 LD20

Claims (20)

[Claims] 1. In a content data distribution system for distributing content data, broadcast data management means for managing broadcast data broadcast via a broadband broadcast line, and a security line having a higher reliability than the broadcast line. Then, the user receives an order for ordering information of the desired content, an ordering means for performing a billing process, and a content data management for managing the content data in a format writable on a recording medium and outputting the content data based on the ordering information Means, data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data and outputting as multiplexed data, and transmitting means for transmitting the multiplexed data via the broadcast line. And a data transmission device having An ordering means for ordering the ordering information to the data transmission device, a receiving means for receiving the multiplexed data from the data transmission device, and a separation of the received multiplexed data into the broadcast data and the content data. And a data read / write unit for writing the content data to the recording medium or reading the content data from the recording medium in which the content data is written, based on the order information. Broadcast data above,
Alternatively, a content data distribution system comprising: a reception / reproduction device having a reproduction unit that reproduces the content data read from the recording medium by the data read / write unit. 2. In a content data distribution system for distributing content data, broadcast data management means for managing broadcast data broadcast via a broadband broadcast line, and a security line more reliable than the broadcast line. Then, the user receives an order for ordering information of the desired content, an ordering means for performing a billing process, and a content data management for managing the content data in a format writable on a recording medium and outputting the content data based on the ordering information Means, data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data and outputting as multiplexed data, and transmitting means for transmitting the multiplexed data via the broadcast line. And a data transmission device having An ordering means for ordering the ordering information to the data transmission device, a receiving means for receiving the multiplexed data from the data transmission device, and a separation of the received multiplexed data into the broadcast data and the content data. Receiving data separation means, an encryption key storage means for storing a unique encryption key, and the content data based on the order information, the encryption key stored in the encryption key storage means. Encrypting means for encrypting using, and writing of the encrypted content data to the recording medium, or reading of the encrypted content data from the recording medium in which the encrypted content data is written , And the encrypted data read from the recording medium by the data read / write means. Deciphering means for deciphering the content data using an encryption key stored in the encryption key storage means, and reproducing means for reproducing the broadcast data or the deciphered content data, A receiving and reproducing apparatus having
A content data distribution system comprising: 3. A content data distribution system for distributing content data, wherein broadcast data management means for managing broadcast data broadcast via a broadband broadcast line and a security line more reliable than the broadcast line are used. The user receives the order information for the desired content, performs the billing process, creates an encryption key to be used for the encryption process based on the order information, and sends it back to the recording medium. Content data in a different format and outputs the content data based on the ordering information, and the content data output from the content data management means is encrypted using the encryption key. An encryption unit and the encrypted content data are multiplexed with the broadcast data. A data transmission device having data multiplexing means for outputting as multiplexed data and a transmission means for transmitting the multiplexed data via the broadcast line, and the data transmission device with the ordering information via the security line. Ordering means for receiving an encryption key for the ordered content, a receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexed data for the broadcast data and the encryption. Receiving data separating means for separating the encrypted content data into encrypted content data, and writing the encrypted content data in the recording medium based on the ordering information, or recording the encrypted content data. Data read / write means for reading the encrypted content data from the medium, and the ordering means The encryption key storage means for storing the received encryption key and the encrypted content data read from the recording medium by the data read / write means are stored in the encryption key storage means. A receiver / reproducer having a decryption means for decrypting using the encryption key, and a reproduction means for reproducing the broadcast data or the content data decrypted by the decryption means. A content data distribution system characterized by the following. 4. In a content data distribution system for distributing content data, broadcast data management means for managing broadcast data broadcast via a broadband broadcast line, and a security line more reliable than the broadcast line. The user receives the order information for the desired content, performs the billing process, creates an encryption key to be used for the encryption process based on the order information, and sends it back to the recording medium. Content data in a different format and outputs the content data based on the ordering information, and the content data output from the content data management means is encrypted using the encryption key. An encryption unit and the encrypted content data are multiplexed with the broadcast data. A data transmission device having data multiplexing means for outputting as multiplexed data and a transmission means for transmitting the multiplexed data via the broadcast line, and the data transmission device with the ordering information via the security line. Ordering means for receiving an encryption key for the ordered content, a receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexed data for the broadcast data and the encryption. Received data separation means for separating the encrypted content data from the encrypted content data, decryption means for decrypting the encrypted content data using the encryption key, and the decrypted data based on the ordering information. The content data is written to the recording medium, or the content medium is written from the recording medium. A receiver / reproducer having a data read / write means for reading and writing the broadcast data or a reproducing means for reproducing the content data read from the recording medium by the data read / write means. A content data distribution system characterized by the following. 5. In a content data distribution system for distributing content data, broadcast data managing means for managing broadcast data broadcast via a broadband broadcast line, and a security line more reliable than the broadcast line. Then, the user receives an order for the order information of the desired content, performs a billing process, and sends back a write permission signal to the recording medium for the ordered content, and a format writable in the recording medium. Manage content data,
Content data management means for outputting information on the output content data to the order receiving means, and data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data and outputting as multiplexed data. A data transmission device having transmission means for transmitting the multiplexed data via the broadcast line, and ordering the order information to the data transmission device via the security line, and permitting writing of the ordered content. Ordering means for receiving a signal, receiving means for receiving the multiplexed data from the data transmission device, received data separating means for separating the received multiplexed data into the broadcast data and the content data, and the content Data storage means for temporarily storing data, and A data read / write means for writing the content data stored in the data storage means to a recording medium or reading the content data from the recording medium in which the content data has been written, based on a write permission signal. A content data distribution system, comprising: a reception / reproduction device including: the broadcast data, or a reproduction unit that reproduces the content data read from the recording medium by the data read / write unit. . 6. In a content data distribution system for distributing content data, broadcast data managing means for managing broadcast data broadcast via a broadband broadcast line, and a security line more reliable than the broadcast line. Then, the user receives an order for the order information of the desired content, performs a billing process, and sends back a write permission signal to the recording medium for the ordered content, and a format writable in the recording medium. Manage content data,
Content data management means for outputting information on the output content data to the order receiving means, and data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data and outputting as multiplexed data. A data transmission device having a transmission means for transmitting the multiplexed data via the broadcasting line, and an order for the order information to the data transmission device via the security line, and a write permission signal for the ordered content. Ordering means for receiving the received data, receiving means for receiving the multiplexed data from the data transmission device, received data separating means for separating the received multiplexed data into the broadcast data and the content data, and the content data Data storage means for temporarily storing data and a unique encryption key. The encryption key storage means for storing the content data and the content key stored in the data storage means based on the write permission signal for the content, using the encryption key stored in the encryption key storage means. Encryption means for encrypting the encrypted content data, and writing the encrypted content data to the recording medium, or reading the encrypted content data from the recording medium on which the encrypted content data is written, And a decryption of the encrypted content data read from the recording medium by the data read / write means using the encryption key stored in the encryption key storage means. Decryption means and a device for reproducing the broadcast data or the decrypted content data. Equipped with a receiving playback device comprising means, the content data distribution system, characterized in that. 7. In a content data distribution system for distributing content data, broadcast data management means for managing broadcast data broadcast via a broadband broadcast line and outputting identification information of the broadcast data, and the broadcast line. A user receives an order for ordering information of a desired content via a more reliable security line, an ordering means for performing a billing process, and manages the content data in a format writable on a recording medium to identify the content data. Content data management means for outputting information, encryption key creation means for creating an encryption key used for encryption processing by utilizing the identification information of the broadcast data and the identification information of the content data, and the encryption A code that encrypts the content data output from the content data management means using a key. And a data multiplexing unit that multiplexes the encrypted content data with the broadcast data and outputs the multiplexed data as multiplexed data, and a transmitting unit that transmits the multiplexed data via the broadcast line. A data transmission device for transmitting the write permission signal of the ordered content and the encryption key via the security line by the order receiving means, and the order information to the data transmission device via the security line. Ordering means for placing an order and receiving a write permission signal and an encryption key for the ordered content, a receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexed data for the broadcast data. A received data separating means for separating the encrypted content data from the encrypted content data, and the encrypted content data temporarily Data storage means for storing the data, the encryption key storage means for storing the encryption key received by the ordering means, and the encryption stored in the data storage means based on the write permission signal of the content. A data read / write unit for writing encrypted content data to the recording medium, or for reading the encrypted content data from the recording medium on which the encrypted content data is written, and the data read / write unit. Decryption means for decrypting the encrypted content data read from the recording medium by using the encryption key stored in the encryption key storage means, the broadcast data, or A reception / reproduction device having reproduction means for reproducing the decrypted content data. A content data distribution system characterized by the following. 8. In a content data distribution system for distributing content data, broadcast data managing means for managing broadcast data broadcast via a broadband broadcast line and outputting identification information of the broadcast data, and the broadcast line. A user receives an order for ordering information of a desired content via a more reliable security line, an ordering means for performing a billing process, and manages the content data in a format writable on a recording medium to identify the content data. Content data management means for outputting information, encryption key creation means for creating an encryption key used for encryption processing by utilizing the identification information of the broadcast data and the identification information of the content data, and the encryption A code that encrypts the content data output from the content data management means using a key. And a data multiplexing unit that multiplexes the encrypted content data with the broadcast data and outputs the multiplexed data as multiplexed data, and a transmitting unit that transmits the multiplexed data via the broadcast line. A data transmission device for transmitting the write permission signal of the ordered content and the encryption key via the security line by the order receiving means, and the order information to the data transmission device via the security line. Ordering means for placing an order and receiving a write permission signal and an encryption key for the ordered content, a receiving means for receiving the multiplexed data from the data transmission device, and the received multiplexed data for the broadcast data. The received data separating means for separating the encrypted content data and the received data separating means The data storage means for temporarily storing the encrypted content data, and the encrypted content data stored in the data storage means on the basis of the content write permission signal. Deciphering means for deciphering using, and data reading and writing means for writing the deciphered content data to the recording medium or reading the content data from the recording medium in which the content data has been written. A content data distribution system, comprising: a reception / reproduction device including: the broadcast data, or a reproduction unit that reproduces the content data read from the recording medium by the data read / write unit. . 9. A data transmission device for delivering content data based on ordering information of a desired content by a user, a broadcast data managing means for managing broadcast data broadcast via a broadband broadcast line, and the broadcast line. An ordering means for receiving the ordering information and performing a billing process via a more reliable security line, and managing the content data in a format writable on the recording medium. Content data management means for outputting, data multiplexing means for multiplexing the content data output from the content data management means with the broadcast data and outputting as multiplexed data, and output data of the data multiplexing means for the broadcast line. Transmitting means for transmitting via Data transmission equipment. 10. A data transmission device for distributing content data based on ordering information of a desired content by a user, and broadcast data managing means for managing broadcast data broadcast via a broadband broadcast line, and the broadcast line. The ordering information is received via the more reliable security line, the billing process is performed, and
An order receiving means for creating and returning an encryption key used for encryption processing based on the ordering information, and a content for managing the content data in a format writable on a recording medium and outputting the content data based on the ordering information. Data management means, encryption means for encrypting the content data output from the content data management means using the encryption key, and multiplexing the encrypted content data with the broadcast data. A data transmission device comprising: a data multiplexing unit that outputs the converted data and a transmission unit that transmits the output data of the data multiplexing unit via the broadcast line. 11. A data transmission device for delivering content data based on ordering information of a desired content by a user, a broadcast data managing means for managing broadcast data broadcast via a broadband broadcast line, and the broadcast line. The ordering information is received via the more reliable security line, the billing process is performed, and
Order receiving means for returning a write permission signal to the recording medium for the ordered content, and content data for managing the content data in a format writable on the recording medium and outputting information on the output content data to the order receiving means. Management means, a data multiplexing means for multiplexing the content data output from the content data managing means with the broadcast data and outputting as multiplexed data, and transmitting the output data of the data multiplexing means via the broadcast line And a transmitting means for controlling the data transmission device. 12. A data transmission device, which distributes content data based on ordering information of a desired content by a user, manages broadcast data broadcast via a broadband broadcasting line, and outputs identification information of the broadcast data. An ordering means for receiving the ordering information and performing a billing process via a broadcast data management means for controlling the contents, and a security line more reliable than the broadcasting line, and managing the content data in a format writable on a recording medium. Content data management means for outputting the content data identification information, and encryption key creation means for creating an encryption key to be used for encryption processing by utilizing the identification information of the broadcast data and the identification information of the content data. And the content data output from the content data management means using the encryption key. Encryption means for encoding, data multiplexing means for multiplexing the encrypted content data with the broadcast data and outputting as multiplexed data, and output data of the data multiplexing means for transmission via the broadcast line A data transmission device, comprising: a transmitting unit, wherein the order receiving unit transmits the write permission signal of the ordered content and the encryption key via the security line. 13. A receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein an order for ordering ordering information of a desired content by a user via a security line having higher reliability than the broadcasting line. Means for receiving multiplexed data in which broadcast data and content data are multiplexed, and receiving data separating means for separating the multiplexed data into the broadcast data and the content data, based on the ordering information. A data read / write unit for writing the content data to a recording medium or reading the content data from the recording medium in which the content data has been written; and the broadcast data, or the recording medium by the data read / write unit. Playback to play the above content data read from Comprising a stage, a receiving and reproducing apparatus, characterized in that. 14. A receiving and reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user places an order for ordering information of desired content via a security line having higher reliability than the broadcasting line. Means, a reception data separating means for separating the multiplexed data into the broadcast data and the content data when receiving the multiplexed data in which the broadcast data and the content data are multiplexed, and a unique encryption key An encryption key storage means for storing the content data; an encryption means for encrypting the content data using the encryption key stored in the encryption key storage means based on the ordering information; The content data written to the recording medium, or the content data from the recording medium on which the content data is written. Reading,
And a code for decrypting the encrypted content data read from the recording medium by the data read / write means using the encryption key stored in the encryption key storage means. A receiving / reproducing apparatus comprising: a canceling unit and a reproducing unit that reproduces the broadcast data or the content data that has been decrypted. 15. A receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user orders ordering information of desired contents via a security line having higher reliability than the broadcasting line,
When the ordering means for receiving the encryption key for the ordered content and the multiplexed data in which the broadcast data and the encrypted content data are multiplexed are received, the multiplexed data is transferred to the broadcast data and the encryption data. Received data separating means for separating the encrypted content data, and writing of the encrypted content data to a recording medium based on the ordering information, or the recording in which the encrypted content data is written Data read / write means for reading the encrypted content data from the medium, encryption key storage means for storing the encryption key received by the ordering means, and read from the recording medium by the data read / write means. The encrypted content data that has been issued is stored in the encryption key storage means. Receiving / reproducing, comprising deciphering means for deciphering using an encryption key, and reproducing means for reproducing the broadcast data or the content data deciphered by the deciphering means. apparatus. 16. A receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user orders ordering information of desired content via a security line having higher reliability than the broadcasting line,
When the ordering means for receiving the encryption key for the ordered content and the multiplexed data in which the broadcast data and the encrypted content data are multiplexed are received, the multiplexed data is transferred to the broadcast data and the encryption data. Reception data separating means for separating the encrypted content data, decryption means for decrypting the encrypted content data using the encryption key, and the decryption based on the ordering information. And a data read / write unit for writing the content data to a recording medium or reading the content data from the recording medium in which the content data is written, and the broadcast data, or the recording medium from the recording medium by the data read / write unit. A reproducing unit for reproducing the read content data. A receiving and reproducing apparatus characterized by the above. 17. A receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user orders order information of desired content via a security line having higher reliability than the broadcasting line,
Ordering means for receiving a write permission signal of the ordered content, and when receiving multiplexed data in which broadcast data and content data are multiplexed, separate the multiplexed data into the broadcast data and the content data. Receiving data separation means, data storage means for temporarily storing the content data, and writing the content data stored in the data storage means to a recording medium based on a write permission signal for the content, or A data read / write means for reading the content data from the recording medium in which the content data is written, and a reproduction for reproducing the broadcast data or the content data read from the recording medium by the data read / write means. Means and Receiving and reproducing device according to claim. 18. A receiving and reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, ordering order information through a security line having higher reliability than the broadcasting line, and permitting writing of the ordered contents. An ordering means for receiving a signal; a reception data separating means for separating the multiplexed data into the broadcast data and the content data when receiving the multiplexed data in which the broadcast data and the content data are multiplexed; A data storage means for temporarily storing content data, an encryption key storage means for storing a unique encryption key, and the content data stored in the data storage means based on a write permission signal for the content. An encryption means for encrypting the encryption key using the encryption key stored in the encryption key storage means; A data read / write unit for writing encrypted content data to a recording medium, or reading the encrypted content data from the recording medium on which the encrypted content data has been written, and the data read / write unit. Decryption means for decrypting the encrypted content data read from the recording medium using the encryption key stored in the encryption key storage means, the broadcast data, or the And a reproducing means for reproducing the decrypted content data. 19. A receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user orders ordering information of desired content via a security line having higher reliability than the broadcasting line,
When the ordering means for receiving the write permission signal and the encryption key of the ordered content and the multiplexed data in which the broadcast data and the encrypted content data are multiplexed are received, the multiplexed data is broadcast. Received data separation means for separating data and the encrypted content data, data storage means for temporarily storing the encrypted content data, and storage of the encryption key received by the ordering means Writing the encrypted content data accumulated in the data accumulating means to a recording medium on the basis of the encryption key storage means and the content write permission signal, or the encrypted content data Data read / write means for reading the encrypted content data from the recording medium in which the And a decryption means for decrypting the encrypted content data read from the recording medium by the data read / write means using the encryption key stored in the encryption key storage means, A receiving / reproducing apparatus comprising: a reproducing unit that reproduces the broadcast data or the decrypted content data. 20. A receiving / reproducing apparatus for receiving and reproducing data via a broadband broadcasting line, wherein a user orders order information of desired content via a security line having higher reliability than the broadcasting line,
When the ordering means for receiving the write permission signal and the encryption key of the ordered content and the multiplexed data in which the broadcast data and the encrypted content data are multiplexed are received, the multiplexed data is broadcast. Received data separation means for separating data and the encrypted content data, data storage means for temporarily storing the encrypted content data separated by the received data separation means, and writing of the content Decryption means for decrypting the encrypted content data stored in the data storage means using the encryption key based on a permission signal, and a decryption means for recording the decrypted content data on a recording medium. Writing or writing of the content data from the recording medium on which the content data is written A receiving / reproducing apparatus comprising: a data reading / writing unit for reading and writing; and a reproducing unit for reproducing the broadcast data or the content data read by the data reading / writing unit from the recording medium. .