JP2004349752A - Downloading system, downloading method, reproducing system, reproducing method, terminal device, and portable communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce efforts required to download and the reproduction processing of a content by a user and a content provider. <P>SOLUTION: A download server apparatus 2 transmits an encrypted pay content and its decryption key to a terminal device 3 and to an IC card of a cellular telephone 4 upon a content purchasing request received from the terminal device 3. In this way, a user can easily acquire the pay content and its decryption key only by arranging the IC card at a position where communication can be performed with an IC card communication section of the terminal device 3 without exchanging information by an e-mail or inputting an PIN number. Also, since the content provider managing a content server apparatus 1 can perform downloading processing only by downloading a desired content to the server apparatus 2 in response to the request from the server apparatus 2, the provider can perform downloading processing without much of efforts. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a system for distributing paid content via an electric communication line such as the Internet, and more particularly, to a technique for reducing the labor on the user side and the content provider side required for content distribution and reproduction processing.
[0002]
[Prior art]
In general, when pay content such as music data and shareware is distributed via a telecommunication line, the content provider must perform additional management such as pay content distribution management and copyright management in addition to the pay content production management work. Work needs to be done. For this reason, the content provider outsources a part of the work related to the distribution processing to a third party, thereby reducing the labor required for the distribution processing of the paid content (for example, see Patent Document 1). .
[0003]
[Patent Document 1]
JP 2002-351744 A
[0004]
[Problems to be solved by the invention]
By the way, in a conventional distribution system, in order to manage copyrights of pay contents, for example, to prevent unauthorized copying, it is common to encrypt pay contents and transmit the encrypted contents to a user. However, according to such a configuration, when using the pay content, the user inputs his / her personal identification number and obtains the encrypted decryption key of the pay content using a means such as e-mail. In addition, it is necessary to perform many operations such as decrypting the content with the obtained decryption key, and much labor is required until the use of the paid content. In addition, since the content provider has to perform the work such as management of the encryption key and the decryption key by itself, it is not possible to outsource all the work related to the distribution processing to a third party, and the paid content is The labor required for the distribution process cannot be reduced.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a distribution system and a distribution system capable of reducing the effort of a user and a content provider required for content distribution and reproduction processing. A method, a reproduction system, a reproduction method, a terminal device, and a mobile communication terminal are provided.
[0006]
[Means for Solving the Problems]
The distribution system and the distribution method according to the present invention are characterized in that the distribution server device receives the content purchase request from the terminal device, and transmits the encrypted content and its decryption key to the terminal device and the To the type IC card unit. Thereby, the user can obtain the encrypted content and the decryption key thereof without performing a lot of work, and the content provider entrusts the distribution process of the content to the distribution server device in a lump. Therefore, the labor on the user side and the content provider side required for content distribution processing can be reduced.
[0007]
Further, a feature of the playback system and the playback method according to the present invention is that the terminal device can read the stored encrypted content when the decryption key stored in the non-contact type IC card unit is readable. Decoding and playback. Thus, the user can decrypt and reproduce the encrypted content only by arranging the non-contact type IC card at a position capable of communicating with the terminal device, thereby reducing the user's labor required for the content reproduction processing. be able to.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention can be applied to a distribution system having a configuration as shown in FIG. 1, for example. Hereinafter, the configuration and operation of a distribution system according to an embodiment of the present invention will be described in detail with reference to FIGS.
[0009]
[Configuration of distribution system]
First, a configuration of a distribution system according to an embodiment of the present invention will be described.
[0010]
As shown in FIG. 1, a distribution system according to an embodiment of the present invention, as shown in FIG. 1, performs a content server device 1 provided on a content provider side that produces content, and a distribution process of a content produced by the content provider. The main components include a distribution server device 2 provided on the side of a distributor who performs the operation, a terminal device 3 operated by a user who purchases the content, and a mobile phone 4 with an IC card function (hereinafter abbreviated as mobile phone 4). These components are configured to be able to communicate with each other via the Internet 5.
[0011]
In this embodiment, each component is configured to perform information communication via the Internet 5. However, the present invention is not limited to this configuration. For example, a telephone communication line, a WAN (Wide Area Network) may be used. ), LAN (Local Area Network), optical fiber communication, cable communication, satellite communication, and other information communication networks may be used to perform the information communication.
[0012]
[Configuration of content server device]
The content server device 1 is configured by a computer system such as a general-purpose personal computer or a workstation, and as shown in FIG. 2, a CPU (Central Processing Unit) 1a, a RAM (Random Access Memory) 1b, and a ROM (Read Only Memory). 1), a communication control unit 1d, and a content storage 1e as main components.
[0013]
The CPU 1a realizes various functions of the content server device 1 by controlling each component according to a computer program and processing data stored in the ROM 1c. The RAM 1b is configured by a volatile storage medium such as a semiconductor memory, and provides a work area for temporarily storing a computer program executed by the CPU 1a and processing data. The ROM 1c is composed of a non-volatile storage medium readable by the CPU 1a, such as a magnetic or optical storage medium or a semiconductor memory, and stores various computer programs and processing data necessary for executing the computer programs.
[0014]
The communication control unit 1d is configured by an information communication device such as a communication modem device, and implements a communication protocol corresponding to an information communication network to be connected. As described above, since the content server device 1 performs information communication via the Internet 5, the communication control unit 1d uses an HTTP (Hyper Text Transfer Protocol), TCP / IP (Transfer Control Protocol / Internet Protocol), or the like. Implement at least the Internet communication protocol.
[0015]
The content storage 1e stores paid content such as music data and shareware produced by a content provider. In the present specification, “content” means data in digital form.
[0016]
[Configuration of distribution server device]
The distribution server device 2 is configured by a computer system such as a general-purpose workstation, and includes, as main components, a CPU 2a, a RAM 2b, a ROM 2c, a communication control unit 2d, and a user information database 2e as shown in FIG.
[0017]
The CPU 2a realizes various functions of the distribution server device 2 described later by controlling each component according to a computer program and processing data stored in the ROM 2c. The RAM 2b is constituted by a volatile storage medium, and provides a work area for temporarily storing computer programs and processing data used by the CPU 2a.
[0018]
The ROM 2c is configured by a non-volatile storage medium readable by the CPU 2a, and includes a basic program (not shown) such as a start program of the distribution server device 2 and a distribution processing program 2f for realizing an operation at the time of distribution processing to be described later. , And processing data (not shown) required for executing these programs. When the application program is executed, the CPU 2a may be configured to read out from a storage medium such as a semiconductor memory, a magnetic disk, an optical disk, a magneto-optical disk, and a magnetic tape.
[0019]
The communication control unit 2d is configured by an information communication device such as a communication modem device, and implements a communication protocol corresponding to a form of an information communication network to be connected. The communication control unit 2d implements at least an Internet communication protocol such as HTTP or TCP / IP, like the communication control unit 1d.
[0020]
The user information database 2e stores information on users who purchase paid contents in a form that the CPU 2a can refer to. Specifically, as shown in FIG. 4, the user information database 2e stores a unique user ID (User_ID) assigned to each user, a name, age, gender, occupation, address, telephone number, and billing information (for example, Personal information such as a credit card number), a process ID (Transaction_ID) uniquely assigned to each pay content distribution process, an encryption key for encrypting the pay content to be distributed to the user, and an encrypted key. A decryption key for decrypting pay content (hereinafter, abbreviated as encrypted content) is stored for each user. The user ID and personal information of each user are generated by a registration process performed before a distribution process to be described later. The details of the user ID will be described later, but the generated user ID is an IC card portion of the mobile phone 4 owned by the user. 4i.
[0021]
[Configuration of terminal device]
The terminal device 3 is configured by a computer system such as a general-purpose personal computer or a PDA (Personal Digital Assistant). As shown in FIG. 5, the terminal device 3 includes a CPU 3a, a RAM 3b, a ROM 3c, a communication control unit 3d, and an IC card communication unit 3e. Provided as main components.
[0022]
The CPU 3a realizes various functions of the terminal device 3 described later by controlling each component according to a computer program and processing data stored in the ROM 3c. The RAM 3b is constituted by a volatile storage medium, and provides a work area for temporarily storing computer programs and processing data used by the CPU 3a.
[0023]
The ROM 3c is configured by a non-volatile storage medium readable by the CPU 3a, and implements a basic program (not shown) such as a boot program of the terminal device 3 and an operation at the time of a distribution process and a reproduction process to be described later. A program storage unit 3h that stores application programs such as a distribution processing program 3f and a reproduction processing program 3g, and a data storage unit 3j that stores data such as encrypted content 3i distributed from the distribution server device 2. When the application program is executed, the CPU 3a may be configured to read from a storage medium such as a semiconductor memory, a magnetic disk, an optical disk, a magneto-optical disk, and a magnetic tape.
[0024]
The communication control unit 3d is configured by an information communication device such as a communication modem device, and implements a communication protocol corresponding to a form of an information communication network to be connected. The communication control unit 3d implements at least an Internet communication protocol such as HTTP or TCP / IP, like the communication control unit 1d and the communication control unit 2d.
[0025]
The IC card communication unit 3e communicates with the non-contact type IC card under the control of the CPU 3a, and executes processing such as read / write processing for data in the non-contact type IC card.
[0026]
[Configuration of mobile phone]
As shown in FIG. 6, the mobile phone 4 includes a liquid crystal display (LCD) display section 4a, a light emission diode (LED) display section 4b, a vibrator 4c, an operation input section 4d, a speaker 4e, a memory 4f, a CPU 4g, and an IC. A card interface unit 4h, an IC card unit 4i, and a communication control unit 4j are provided as main components.
[0027]
The LCD display unit 4a visually displays various information such as characters, numbers, symbols, icons, cursors, images, and moving images under the control of the CPU 4g. The LED display section 4b emits light in a plurality of light emission patterns under the control of the CPU 4g. The vibrator 4c is composed of a small motor having an eccentric weight attached to a rotating shaft, and vibrates the mobile phone 4 under the control of the CPU 4g.
[0028]
The operation input unit 4d is used for operations such as input of numbers from "0" to "9", input of characters, input of symbols, input of transmission and reception instructions, and input of power on / off instructions. It has multiple key buttons. The operation input unit 4d has a dial (jog dial) used at the time of operations such as a cursor movement operation and a screen scroll operation displayed on the LCD display unit 4a.
[0029]
The speaker 4e outputs an audio signal under the control of the CPU 4g. The memory 4f is constituted by a non-volatile storage medium readable by the CPU 4g, and includes an operation system (OS) program of the mobile phone 4 and a distribution processing program 4k for realizing the operation of the mobile phone 4 at the time of distribution processing to be described later. And various computer programs and data for processing.
[0030]
The CPU 4g realizes various functions of the mobile phone 4 to be described later by controlling each component using a computer program and processing data stored in the ROM 3c. The IC card interface unit 4h controls a communication process between the CPU 4g and the IC card unit 4i. The communication control unit 4j implements various communication protocols such as TCP / IP and HTTP, and performs general communication functions of the mobile phone 4 such as incoming call processing and outgoing call processing, electronic data transmission / reception processing, web browsing processing, and the like. To achieve.
[0031]
The IC card unit 4i is composed of a non-contact type IC card that operates according to a command transmitted from an IC card reader / writer device such as an IC card communication unit 3e, and includes an antenna 41, a rectifying unit 4m, a demodulating unit 4n, and a control unit. 4o, a storage unit 4p, and a modulation unit 4q are provided as main components. The rectifying unit 4m rectifies the AC voltage induced in the antenna 41 into a DC voltage, and generates electric power for operating the components in the IC card unit 4i. The demodulation unit 4n separates and outputs a data signal from the received carrier signal. The control unit 4o executes processing corresponding to various services according to the received command. Specifically, the control unit 4o extracts a command or data from the data signal by analyzing the data signal output from the demodulation unit 4n. Then, the control unit 4o executes various processes such as storing data in the storage unit 4p and reading data from the storage unit 4p in accordance with the content of the extracted command.
[0032]
The storage unit 4p stores information corresponding to various services as shown in FIG. Although not shown, the information corresponding to the paid content distribution service includes information on a user ID (User_ID) assigned to the user and information for connecting to the distribution server device 2 (for example, a telephone number or IP address). Address etc.) at least. Also, the information includes a process ID (Transaction_ID) at the time of distribution processing to be described later, and information about a decryption key of the encrypted content after the distribution processing is completed. The modulation unit 4q amplitude-modulates the carrier signal according to the transmission data output from the control unit 4o, and transmits the carrier signal on which the transmission data is superimposed via the antenna 41.
[0033]
[Operation of distribution system]
[Distribution processing]
The distribution system operates as described below to distribute the encrypted pay content and its decryption key to the terminal device 3 and the IC card unit 4i, respectively. Hereinafter, the operation of the distribution system when distributing the encrypted pay content and its decryption key will be described in detail with reference to FIG.
[0034]
The content distribution process starts when the user connects the terminal device 3 to the distribution server device 2 via the Internet 5, and proceeds to the process of step S1. Then, in the processing of step S1, the terminal device 3 refers to the information such as the web screen transmitted from the distribution server device 2 and, in response to the user selecting the pay content, a request for purchasing the selected pay content. To the distribution server device 2. Thus, the process of step S1 is completed, and the distribution process proceeds from step S1 to step S2.
[0035]
In the process of step S2, the distribution server device 2 transmits a transmission request for the user ID (User_ID) assigned to the user to the terminal device 3. Thereby, the process of step S2 is completed, and the distribution process proceeds from the process of step S2 to the process of step S3.
[0036]
In the process of step S3, the terminal device 3 transmits a user ID read request command to the IC card unit 4i. Thereby, the process of step S3 is completed, and the distribution process proceeds from the process of step S3 to the process of step S4.
[0037]
In the process of step S4, the IC card unit 4i reads the user ID from the information corresponding to the pay content distribution service stored in the storage unit 4p, and transmits the read user ID to the terminal device 3 ( Read response). Thereby, the process of step S4 is completed, and the distribution process proceeds from the process of step S4 to the process of step S5.
[0038]
In the process of step S5, the terminal device 3 transmits the user ID transmitted from the IC card unit 4i to the distribution server device 2. Thus, the process of step S5 is completed, and the distribution process proceeds from step S5 to step S6.
[0039]
In the process of step S6, the distribution server device 2 transmits an encryption key for encrypting the pay content selected by the user, a decryption key for decrypting the encrypted pay content, A uniquely assigned processing (Transaction) ID is created, and the created information is stored in the storage area of the user information database 2e corresponding to the received user ID. Thereby, the process of step S6 is completed, and the distribution process proceeds from the process of step S6 to the process of step S7.
[0040]
In the process of step S7, the distribution server device 2 transmits the created process ID to the terminal device 3. Thereby, the process of step S7 is completed, and the distribution process proceeds from the process of step S7 to the process of step S8.
[0041]
In the process of step S8, the terminal device 3 transmits the write request command of the process ID and the received process ID to the IC card unit 4i. Thereby, the process of step S8 is completed, and the distribution process proceeds from the process of step S8 to the process of step S9.
[0042]
In the process of step S9, the IC card unit 4i writes the process ID in the information corresponding to the pay content distribution service stored in the storage unit 4p, and in response to the completion of the writing of the process ID, A write completion response of the processing ID is transmitted to the terminal device 3. Thereby, the process of step S9 is completed, and the distribution process proceeds from the process of step S9 to the process of step S10.
[0043]
In the process of step S10, the distribution server device 2 requests the content server device 1 to transmit the pay content selected by the user. Thereby, the process of step S10 is completed, and the distribution process proceeds from the process of step S10 to the process of step S11.
[0044]
In the process of step S11, the content server device 1 reads out the requested pay content from the content storage 1e, and transmits the read pay content to the distribution server device 2. Thereby, the process of step S10 is completed, and the distribution process proceeds from the process of step S11 to the process of step S12.
[0045]
In the process of step S12, the distribution server device 2 encrypts the pay content using the encryption key created in the process of step S6. Thereby, the process of step S12 is completed, and the distribution process proceeds from the process of step S12 to the process of step S13.
[0046]
In the process of step S13, the terminal device 3 transmits a distribution request for paid content to the distribution server device 2. Thereby, the process of step S13 is completed, and the distribution process proceeds from the process of step S13 to the process of step S14.
[0047]
In the process of step S14, the distribution server device 2 transmits the pay content encrypted in the process of step S12 to the terminal device 3. Thus, the process of step S14 is completed, and the distribution process proceeds from step S14 to step S15.
[0048]
In the process of step S15, the mobile phone 4 refers to the information for connecting to the distribution server device 2 stored in the storage unit 4p according to the instruction from the user, and obtains the encrypted pay content. A transmission request for the decryption key is transmitted to the distribution server device 2. Thus, the process of step S15 is completed, and the distribution process proceeds from step S15 to step S16.
[0049]
In the process of step S16, the distribution server device 2 transmits a process ID transmission request command to the IC card unit 4i to identify the decryption key to be transmitted. Thereby, the process of step S16 is completed, and the distribution process proceeds from the process of step S16 to the process of step S17.
[0050]
In the process of step S17, the mobile phone 4 reads out the process ID from the information corresponding to the pay content distribution service stored in the storage unit 4p, and transmits the read process ID to the distribution server device 2. Thus, the process of step S17 is completed, and the distribution process proceeds from step S17 to step S18.
[0051]
In the process of step S18, the distribution server device 2 executes a billing process related to a process of selling paid content. The billing process is performed by using personal information of the user such as credit card information or electronic money information stored in advance in the user information database 2e or the IC card unit 4i, or issuing a bill. Can be performed. Thereby, the process of step S18 is completed, and the distribution process proceeds from the process of step S18 to the process of step S19.
[0052]
In the process of step S19, the distribution server device 2 reads the decryption key corresponding to the received process ID from the user information database 2e, and transmits the read decryption key to the mobile phone 4. Then, the mobile phone 4 records the received decryption key in the information corresponding to the pay content distribution service stored in the storage unit 4p. Thus, the processing of step S19 is completed, and a series of distribution processing ends.
[0053]
In this embodiment, the distribution server device 2 communicates with the IC card unit 4i in software via the terminal device 3, but may communicate by directly accessing the IC card unit 4i.
[0054]
[Reproduction processing]
When the encrypted pay content and its decryption key are stored in the terminal device 3 and the IC card unit 4i as described above, respectively, the terminal device 3 and the mobile phone 4 perform the following operations according to the operation of the user. By performing the operation as shown, the pay content reproducing process is executed. Hereinafter, with reference to the flowchart shown in FIG. 9, the operations of the terminal device 3 and the mobile phone 4 when executing the pay content reproduction process will be described in detail.
[0055]
The flowchart shown in FIG. 9 is started in response to the user operating the terminal device 3 to instruct the pay content reproduction process, and the reproduction process proceeds to step S21. Note that the terminal device 3 outputs a message such as “Please hold the IC card unit 4i over a position where communication with the IC card communication unit 3e is possible” or the like in response to the instruction to reproduce the pay content. It is desirable.
[0056]
In the process of step S21, the terminal device 3 transmits a decryption key read request command to the IC card unit 4i, thereby storing information in the information corresponding to the pay content distribution service stored in the storage unit 4p. Read the decryption key from. Thus, the process of step S21 is completed, and the reproduction process proceeds from the process of step S21 to the process of step S22.
[0057]
In the process of step S22, the terminal device 3 determines whether or not reading of the decryption key has been successful. Then, as a result of the determination, when the reading of the decryption key fails, the terminal device 3 advances the reproduction process to the process of step S27. On the other hand, when the reading of the decryption key is successful, the terminal device 3 advances the reproduction process to the process of step S23.
[0058]
In the process of step S23, the terminal device 3 decrypts the encrypted content 3i stored in the ROM 3c using the decryption key read from the IC card unit 4i. Thus, the process of step S23 is completed, and the reproduction process proceeds from step S23 to step S24.
[0059]
In the process of step S24, the terminal device 3 determines whether or not the decryption of the encrypted content 3i has succeeded. Then, as a result of the determination, when the decoding has failed, the terminal device 3 advances the reproduction process to the process of step S27. On the other hand, if the decryption is successful, the terminal device 3 advances the reproduction process to the process of step S25.
[0060]
In the process of step S25, the terminal device 3 reproduces the decrypted pay content. Thereby, the process of step S25 is completed, and the reproduction process proceeds from the process of step S25 to the process of step S26.
[0061]
In the process of step S26, the terminal device 3 determines whether or not the reproduction of the pay content has been completed. Then, in response to the completion of the reproduction of the pay content, the terminal device 3 advances the reproduction process to the process of step S27.
[0062]
In the process of step S27, the terminal device 3 determines whether or not there is a reproduction instruction for another pay content. If there is a reproduction instruction, the terminal device 3 returns the reproduction processing to the processing of step S21. On the other hand, if there is no reproduction instruction, the series of reproduction processing ends.
[0063]
In this embodiment, the terminal device 3 performs the decryption key read confirmation process (the process of step S22) at the start of the playback of the pay content. However, for example, as shown in the flowchart of FIG. During the decryption, the reading of the decryption key may be checked at regular intervals (the processing of steps S31 to S33).
[0064]
[Effects of Embodiment]
As is apparent from the above description, according to the distribution system according to the embodiment of the present invention, the distribution server device 2 transmits the encrypted pay content and the encrypted pay content in response to the purchase request of the content received from the terminal device 3. Since the decryption key is transmitted to the terminal device 3 and the IC card unit 4i, the user only needs to place the IC card unit 4i at a position where communication with the IC card communication unit 3e in the terminal device 3 is possible. Paid contents and their decryption keys can be easily obtained without having to exchange e-mails or input a password. Further, in response to a request from the distribution server device 2, the content provider can perform the distribution process simply by transmitting the requested content to the distribution server device 2, so that the content provider does not require much labor. Delivery processing can be performed.
[0065]
According to the distribution system according to the embodiment of the present invention, the IC card communication unit 3e in the terminal device 3 communicates with the IC card unit 4i, and the decryption key stored in the IC card unit 4i is When reading is possible, the CPU 3a decrypts and reproduces the encrypted content 3i stored in the ROM 3c, so that the user does not have to input the decryption key by himself, and the user does not have to input the decryption key. The encrypted pay contents can be easily reproduced simply by arranging the IC card unit 4i at a position where communication with the IC card communication unit 3e is possible. Further, even if the encrypted content is copied to a third party, the content cannot be reproduced unless the IC card unit 4i in which the decryption key is stored is stored, so that the pay content is illegally copied and reproduced. Can be prevented.
[0066]
Further, according to the distribution system according to the embodiment of the present invention, the IC card communication unit 3e in the terminal device 3 communicates with the IC card unit 4i at regular time intervals while playing the pay content, and If it is determined that the decryption key stored in the card unit 4i cannot be read, the CPU 3a stops the reproduction of the pay content. When the communication with the card communication unit 3e deviates from the position where the communication is possible, the reproduction of the content can be stopped.
[0067]
Further, according to the distribution system according to one embodiment of the present invention, the distribution server device 2 reads out the user ID stored in the IC card unit 4i via the terminal device 3, and based on the read out user ID, Can be determined, the distribution server device 2 can perform user-specific processing such as charging processing for content purchase based on the determination result.
[0068]
[Other embodiments]
As described above, the embodiment to which the invention made by the present inventors is applied has been described. However, the present invention is not limited by the description and the drawings that constitute a part of the disclosure of the present invention according to this embodiment. For example, in the above embodiment, the mobile phone 4 is provided with the IC card unit 4i, and the mobile phone 4 communicates with the distribution server device 2 and stores the decryption key in the IC card unit 4i. In the case where the device having the IC card unit 4i does not have the information communication function, the terminal device 3 may communicate with the distribution server device 2 and store the decryption key in the IC card unit 4i. As described above, it is added that other embodiments, examples, operation techniques, and the like performed by those skilled in the art based on this embodiment are all included in the scope of the present invention.
[0069]
【The invention's effect】
According to the present invention, since the distribution server device transmits the encrypted content and the decryption key thereof to the terminal device and the contactless IC card unit, respectively, the user side and the content provider side required for the content distribution process Labor can be reduced.
[0070]
Further, according to the present invention, the terminal device decrypts and reproduces the stored encrypted content when the decryption key stored in the non-contact type IC card unit is readable, so that The user's labor required for the reproduction process of (1) can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic diagram illustrating a configuration of a distribution system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of the content server device shown in FIG.
FIG. 3 is a block diagram illustrating a configuration of a distribution server device illustrated in FIG. 1;
FIG. 4 is a schematic diagram showing a configuration of a user information database shown in FIG. 3;
FIG. 5 is a block diagram showing a configuration of a terminal device shown in FIG.
6 is a block diagram showing a configuration of the mobile phone shown in FIG.
FIG. 7 is a schematic diagram illustrating a configuration of a storage unit illustrated in FIG. 6;
FIG. 8 is a flowchart illustrating a flow of a distribution process according to an embodiment of the present invention.
FIG. 9 is a flowchart illustrating a flow of a reproduction process according to an embodiment of the present invention.
FIG. 10 is a flowchart illustrating an application example of the distribution processing illustrated in FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Content server device, 2 ... Distribution server device, 3 ... Terminal device, 3e ... IC card communication part, 4 ... Mobile telephone with IC card function, 4i ... IC card part, 5 ... Internet

Claims (13)

A content server device for storing content,
A portable communication terminal having a non-contact type IC card unit,
A terminal device having a communication function with the contactless IC card unit;
A distribution server device for transmitting the content to the terminal device,
In response to receiving the content purchase request from the terminal device, the distribution server device allocates an identifier uniquely assigned to the purchase process, a content encryption key, and the content encrypted by the encryption key. Generates a decryption key, receives the content to be purchased from the content server device, encrypts the received content using the generated encryption key, and transmits the encrypted content and the identifier to the terminal device. And
The terminal device stores the encrypted content and writes the identifier in the contactless IC card unit using the communication function,
The portable communication terminal transmits the identifier written in the contactless IC card unit to the distribution server device,
The distribution server device transmits the decryption key to the mobile communication terminal with reference to the identifier received from the mobile communication terminal,
The portable communication terminal stores a received decryption key in the non-contact type IC card unit. The distribution system according to claim 1, wherein
The non-contact type IC card unit stores unique identification information,
In response to receiving a content purchase request from the terminal device, the distribution server device reads the identification information from the non-contact type IC card unit via the terminal device, and a purchaser based on the read identification information. A distribution system that determines A content server device for storing content, a portable communication terminal having a non-contact IC card unit, a terminal device having a function of communicating with the non-contact IC card unit, and a distribution server for transmitting the content to the terminal device A distribution method of a distribution system including the device,
In response to receiving the content purchase request from the terminal device, the distribution server device allocates an identifier uniquely assigned to the purchase process, a content encryption key, and the content encrypted by the encryption key. Generating a decryption key for
A step of receiving the content to be purchased from the content server device in the distribution server device;
In the distribution server device, encrypting the received content using the generated encryption key;
In the delivery server device, transmitting the encrypted content and the identifier to the terminal device;
A step of storing the encrypted content in the terminal device;
In the terminal device, a step of writing the identifier in the non-contact type IC card unit using the communication function;
In the mobile communication terminal, a step of transmitting an identifier written in a contactless IC card unit to the distribution server device;
In the distribution server device, referring to the identifier received from the mobile communication terminal, transmitting the decryption key to the mobile communication terminal;
Storing said received decryption key in said non-contact type IC card section in said portable communication terminal. The distribution method according to claim 3, wherein
The distribution server device includes a step of reading unique identification information stored in the non-contact type IC card unit via the terminal device, and determining a purchaser based on the read identification information. Delivery method. A terminal device that stores the encrypted content and has a communication function with a contactless IC card unit;
A portable communication terminal having a contactless IC card unit for storing a decryption key of the encrypted content,
The terminal device determines whether a decryption key is readable from the contactless IC card unit in response to a request to reproduce the encrypted content, and determines that the decryption key is readable. A decryption key read from the non-contact type IC card unit, the encrypted content is decrypted using the decryption key, and the decrypted content is reproduced. The playback system according to claim 5, wherein
The terminal device determines whether or not the decryption key is readable from the non-contact type IC card unit at predetermined time intervals while reproducing the decrypted content, and determines whether the decryption key is readable. A reproduction system for stopping reproduction of the content when it is determined that the content has been reproduced. Determining whether a decryption key for the encrypted content can be read from the contactless IC card unit in response to a request to play back the encrypted content;
Reading the decryption key from the non-contact type IC card when the decryption key is determined to be readable;
Decrypting the encrypted content using the read decryption key;
Playing the decrypted content. The reproduction method according to claim 7, wherein
While the decrypted content is being reproduced, it is determined whether or not the decryption key is readable from the non-contact type IC card unit at predetermined time intervals, and when it is determined that the decryption key is not readable. And a step of stopping the reproduction of the content. A communication control unit for performing information communication via a telecommunication line;
A storage unit for storing the encrypted content;
An IC card communication unit that communicates with a non-contact type IC card;
A terminal, wherein the IC card communication unit writes the decryption key into the non-contact type IC card in response to receiving the decryption key of the encrypted content via a telecommunication line. apparatus. The terminal device according to claim 9,
A control unit for controlling a reproduction process of the encrypted content,
The control unit controls the IC card communication unit in response to a request to reproduce the encrypted content, and determines whether a decryption key can be read from the contactless IC card. If it is determined that the decryption key is readable, the decryption key is read from the contactless IC card, the encrypted content is decrypted using the decryption key, and the decrypted content is reproduced. A terminal device characterized by the above-mentioned. The terminal device according to claim 10,
The control unit controls the IC card communication unit at predetermined time intervals during the reproduction of the content to determine whether a decryption key can be read from the contactless IC card. A terminal device for stopping reproduction of a content when it is determined that a decryption key cannot be read. A non-contact type IC card part,
A communication control unit for performing information communication via a telecommunication line,
The non-contact type IC card unit stores the identifier in response to receiving the identifier uniquely assigned for each content purchase process,
The communication control unit transmits the identifier to a distribution server device that distributes the content, receives a decryption key of the content transmitted by the distribution server device according to the identifier, and contacts the received decryption key in a non-contact manner. A portable communication terminal, wherein the portable communication terminal is stored in a type IC card unit. The mobile communication terminal according to claim 12,
The portable communication terminal according to claim 1, wherein the non-contact type IC card unit transmits the decryption key in response to a request for reproducing the content.

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