JP2014092947A - Communication medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display various presentation data on a display unit of a communication medium.SOLUTION: When a control microcomputer 4 and an IC chip 8 detect pressing force on a pressing button 6, information data (balance information data, point information data, ID information data, authentication information data, history information data) stored in one of multiple information data storage areas 8con the basis of addresses (addresses A, B, C, D, E) stored in an address storage area 8cis acquired as presentation data. Then, a display unit 5 displays the acquired presentation data.

Description

  The present invention relates to a communication medium that exchanges data with an external device and performs arithmetic processing on the received data.

  Conventionally, as this type of technology, for example, there is an IC (integrated circuit) card described in Patent Document 1. In this IC card, the data received from the reader / writer is processed. Subsequently, in this IC card, information data, which is data that has undergone arithmetic processing, is stored in the storage unit. In this IC card, the information data stored in the storage unit is displayed on the display unit. Thereby, this IC card presents information data.

Further, as this type of technology, for example, there is a technique in which a push button is provided outside the IC card, and information data being displayed is updated when pressing of the push button is detected.
In addition, as this type of technology, for example, there is a method of performing a plurality of arithmetic processes for realizing a plurality of types of functions such as an electronic wallet function and a point storage function with one IC card.

Japanese Patent Application Laid-Open No. 11-120212

However, in the IC card, only one piece of information data (for example, balance information data for the electronic wallet function) stored in the storage unit is displayed on the display unit. Therefore, with the IC card, it is difficult to display various presentation data on the display unit.
This invention pays attention to the above points, and makes it a subject to make it possible to display various presentation data on the display part of a communication medium.

  In order to solve the above-described problem, a communication medium according to one embodiment of the present invention is a communication medium that exchanges data with an external device and performs arithmetic processing on received data, and is information data that has been arithmetically processed. A plurality of information data storage areas for storing information, an address storage area for storing one address of the plurality of information data storage areas, an operation unit operable by a user for a display request, and operation of the operation unit When the requested operation detection unit detects the operation of the operation unit, it is stored in one of the plurality of information data storage areas based on the address stored in the address storage area. And a display unit for displaying information represented by the presentation data acquired by the data acquisition unit.

In addition, the received data is associated with one of the plurality of information data storage areas, the received data is processed, and the information data that is the processed data is associated with the plurality of information data storage areas. It is good also as a structure provided with the some arithmetic processing execution part memorize | stored in the information data storage area.
Further, the data acquisition unit detects the operation of the operation unit when the request operation detection unit continuously detects the operation of the operation unit at an interval within a preset time set in advance. The information data stored in each of the plurality of information data storage areas may be sequentially acquired as presentation data each time.
The communication medium may be an IC card.

  According to one aspect of the present invention, for example, various presentation data can be displayed on the display unit of the communication medium by rewriting the address stored in the address storage area.

1 is a diagram showing an external configuration of an IC card 1. FIG. 1 is a block diagram illustrating a configuration example of an IC card 1. FIG. It is a figure for demonstrating the memory | storage part 8c. It is a figure for demonstrating the arithmetic processing part 8d. It is a flowchart showing command transmission processing. It is a flowchart showing a data acquisition process. FIG. 5 is an explanatory diagram showing the operation of the IC card 1 It is a flowchart showing command transmission processing. It is a flowchart showing a data acquisition process.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an external configuration of an IC card.
As shown in FIG. 1, in the present embodiment, an IC card 1 will be described as an example of the communication medium of the present invention. The IC card 1 performs four arithmetic processes for realizing an electronic wallet function, a point storage function, an ID information management function, and an authentication information management function. As the electronic wallet function, for example, there is a function of storing a balance of electronic money. Moreover, as a point storage function, there exists a function which memorize | stores the point provided according to the purchase etc. of goods, for example. Furthermore, as an ID information management function, for example, there is a function of managing ID information. As an authentication information management function, for example, there is a function of managing authentication information.
In the present embodiment, the IC card 1 performs an example of performing four arithmetic processes for realizing an electronic wallet function, a point storage function, an ID information management function, and an authentication information management function. It can also be adopted. For example, the IC card 1 may be configured to perform at least two of the four arithmetic processes.

(First embodiment)
(Constitution)
FIG. 2 is a block diagram illustrating a configuration example of the IC card 1 of the present embodiment.
As shown in FIG. 2, the IC card 1 includes a non-contact communication antenna 2, a power supply unit 3, a control microcomputer 4, a display unit 5, a push button 6, a switch 7, and an IC chip 8. Prepare.
The non-contact communication antenna 2 converts electromagnetic waves output from an external reader / writer (not shown) into electric power, and supplies the converted electric power to the IC chip 8. The non-contact communication antenna 2 outputs to the IC chip 8 a current generated by an electromagnetic wave output from an external reader / writer, that is, a current in which data is modulated. Further, the non-contact communication antenna 2 outputs an electric current output from the IC chip 8, that is, an electromagnetic wave generated by a current in which data is modulated, to an external reader / writer. Thereby, the non-contact communication antenna 2 exchanges data (wireless communication) with an external reader / writer. Examples of the non-contact communication antenna 2 include a wound antenna, an etching antenna, and a printed antenna. The contactless communication antenna 2 can be intermittently connected to the contactless interface 8a (described later) of the IC chip 8 by switching the ON state and the OFF state of the switch 7.
In the present embodiment, an example in which the non-contact communication antenna 2 transmits and receives data (communication) via wireless communication has been described, but other configurations may be employed. For example, it is good also as a structure which communicates via contact communication using a cable etc.

  The power supply unit 3 supplies power to the control microcomputer 4. Examples of the power supply unit 3 include a primary battery, a secondary battery, and a capacitor. The power supply unit 3 may be an antenna that converts electromagnetic waves output from an external reader / writer into electric power and supplies the converted electric power to the control microcomputer 4, for example, as with the non-contact communication antenna 2. Good. In this case, the control microcomputer 4 can operate only when the IC card 1 is held over the reader / writer.

  The control microcomputer 4 detects an operation (press) of the push button 6. When the operation (pressing) of the push button 6 is detected, the control microcomputer 4 is electrically connected to a contact interface 8b (described later) of the IC chip 8. Subsequently, when the control microcomputer 4 is electrically connected to the contact interface 8b, the operation processing unit 8d (described later) of the IC chip 8 and a read command (first read command (described later), A command transmission process for transmitting a second read command (described later) is executed. In the command transmission process, the control microcomputer 4 applies a voltage to the display unit 5 based on data stored in the storage unit 8c (described later) of the IC chip 8 acquired via the contact interface 8b and the arithmetic processing unit 8d. Then, the display unit 5 is driven. Thereby, the control microcomputer 4 controls the display content of the display unit 5. Details of the command transmission process will be described later. On the other hand, if the operation (press) of the push button 6 is not detected, the control microcomputer 4 is electrically disconnected from the contact interface 8b.

The display unit 5 is arranged with the display surface exposed outside the IC card 1. The display unit 5 is driven by electric power supplied from the control microcomputer 4. Thereby, the display part 5 displays the various information according to electric power. Examples of the display unit 5 include electrophoretic, ferroelectric liquid crystal, electronic paper such as cholesteric liquid crystal, and electrochromic liquid crystal.
The pressing button 6 is arranged with the pressing surface exposed outside the IC card 1. The push button 6 is operated by the user of the IC card 1 for a display request.

  The switch 7 detects an operation (pressing) of the pressing button 6. And switch 7 will be in ON state, if operation (press) of push button 6 is detected. Subsequently, when the switch 7 is turned on, the non-contact communication antenna 2 and the non-contact interface 8a are electrically disconnected. Accordingly, the switch 7 disables data exchange between the non-contact communication antenna 2 and the arithmetic processing unit 8d via the non-contact interface 8a. On the other hand, the switch 7 is turned off when the operation (press) of the push button 6 is not detected. Subsequently, when the switch 7 is turned off, the non-contact communication antenna 2 and the non-contact interface 8a are electrically connected. Accordingly, the switch 7 enables data exchange between the non-contact communication antenna 2 and the arithmetic processing unit 8d via the non-contact interface 8a.

The IC chip 8 includes a non-contact interface 8a, a contact interface 8b, a storage unit 8c, and an arithmetic processing unit 8d.
The non-contact interface 8a is intermittently connected to the non-contact communication antenna 2 by switching the ON state and OFF state of the switch 7.
The contact interface 8b detects an electrical connection between the non-contact interface 8a and the non-contact communication antenna 2. The contact interface 8b is electrically disconnected from the control microcomputer 4 when an electrical connection between the contactless interface 8a and the contactless communication antenna 2 is detected. On the other hand, the contact interface 8b is electrically connected to the control microcomputer 4 when the disconnection between the contactless interface 8a and the contactless communication antenna 2 is detected.

FIG. 3 is a diagram for explaining the storage unit 8c.
As shown in FIG. 3, the storage unit 8c has a plurality of information data storage areas 8c ₁ for storing data (hereinafter also referred to as information data) calculated by the calculation processing unit 8d. Examples of the information data include balance information data, point information data, ID information data, authentication information data, and history information data. The balance information data includes, for example, electronic money balance data stored by the electronic wallet function. The point information data includes, for example, point data stored by the point storage function. Further, the ID information data includes, for example, ID information data managed by the ID information management function. The authentication information data includes, for example, authentication information data managed by the authentication information management function. Furthermore, as the history information data, for example, there is usage history data of the IC card 1. Different addresses (for example, addresses A, B, C, D, and E) are associated with each of the plurality of information data storage areas 8c ₁ . The storage unit 8c has an address storage area 8c ₂ for storing one address of the plurality of information data storage areas 8c ₁ . The address storage area 8c _2, predetermined address (e.g., address 1) is associated. Examples of the storage unit 8c include an EEPROM (Electrically Erasable Programmable Read-Only Memory), a flash memory, and the like.

FIG. 4 is a diagram for explaining the arithmetic processing unit 8d.
The arithmetic processing unit 8d includes an A / D (Analog to Digital) conversion circuit, a D / A (Digital to Analog) conversion circuit, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. An integrated circuit comprising: The ROM stores a program for executing arithmetic processing for realizing various functions of the IC card 1. The CPU (arithmetic processing unit 8d) performs various arithmetic processings on the data output from the non-contact interface 8a, that is, the data modulated into current (hereinafter also referred to as modulation data) according to the program stored in the ROM. Processing content selection processing (described later), electronic wallet processing (described later), point storage processing (described later), ID information management processing (described later), authentication information management processing (described later), command transmission processing (described later) are executed. Then, as shown in FIG. 4, the CPU (arithmetic processing unit 8d) includes a processing content determination unit 8d ₁ that executes processing content selection processing, an electronic wallet function unit 8d ₂ that executes electronic wallet processing, and point storage processing. Point storage function unit 8d ₃ for executing ID information management function unit 8d ₄ for executing ID information management processing, authentication information management function unit 8d ₅ for executing authentication information management processing, and data acquisition processing The data acquisition unit 8d ₆ is realized.

The processing content determination unit 8d ₁ acquires the modulation data and the header of the modulation data. Here, the header of the modulation data includes four arithmetic processes (electronic wallet processing, point storage processing, realization of an electronic wallet function, a point storage function, an ID information management function, and an authentication information management function for the modulation data. ID information management processing and authentication information management processing) are included. Subsequently, the processing content determination unit 8d ₁ executes any of the electronic wallet processing, the point storage processing, the ID information management processing, and the authentication information management processing on the acquired modulation data according to the information included in the acquired header. It is determined whether.

The electronic wallet function unit 8d ₂ is associated with the information data storage area 8c ₁ associated with the address A among the plurality of information data storage areas 8c ₁ . When the electronic wallet function unit 8d ₂ determines that the processing content determination unit 8d ₁ executes the electronic wallet processing, the electronic wallet function unit 8d ₂ modulates data output from the non-contact interface 8a (for example, the amount of money spent on electronic money from the IC card 1 , An electronic wallet process for calculating the information data of the deposit amount of electronic money to the IC card 1 is executed. As the arithmetic processing, there is processing for calculating the electronic money expenditure from the IC card 1 and the balance (balance information data) after depositing the electronic money into the IC card 1. Subsequently, the electronic wallet function portion 8d ₂ are modulated data calculated processed information associated among the plurality of information data storage area 8c ₁ data storage area 8c ₁ (address A in the information data storage area 8c ₁₎ (Balance information data) is stored. Subsequently, the electronic wallet function unit 8d ₂ stores (overwrites) the address (address A) associated with the stored information data storage area 8c ₁ in the address storage area 8c ₂ of the storage unit 8c. Subsequently, the electronic wallet function unit 8d ₂ stores use history data (history information data) of the IC card 1 in the information data storage area 8c ₁ associated with the address E among the plurality of information data storage areas 8c _1. Remember.

The point storage function unit 8d ₃ is associated with the information data storage area 8c ₁ associated with the address B among the plurality of information data storage areas 8c ₁ . When the point storage function unit 8d ₃ determines that the processing content determination unit 8d ₁ executes the point storage process, the point storage function unit 8d ₃ modulates data output from the non-contact interface 8a (for example, the amount of points spent from the IC card 1, A point storage process is executed to calculate (information data on the amount of points given to the IC card 1). As the calculation process, there is a process of calculating the points spent from the IC card 1 and the remaining points (point information data) after the points are given to the IC card 1. Subsequently, point storage function unit 8d ₃ is modulated data processing into a plurality of information data information associated with one of the storage area 8c ₁ data storage area 8c ₁ (address B of information data storage area 8c ₁₎ (Point information data) is stored. Subsequently, the point storage function unit 8d ₃ stores (overwrites) the address (address B) associated with the stored information data storage region 8c ₁ in the address storage region 8c ₂ of the storage unit 8c. Subsequently, the point storage function unit 8d ₃ stores the history information data in the information data storage area 8c ₁ associated with the address E among the plurality of information data storage areas 8c ₁ .

ID information management function unit 8d ₄ is associated with information data storage area 8c ₁ address among the plurality of information data storage area 8c ₁ C is associated. When the process content determination unit 8d ₁ determines that the ID information management process is to be executed, the ID information management function unit 8d ₄ represents modulation data (for example, that ID information is used) output from the non-contact interface 8a. ID information management processing for calculating (information data) is executed. Subsequently, ID information management function unit 8d ₄ was processing a plurality of information data storage area association its dependent information data storage area 8c of the 8c _{1 1} (information of the address C data storage area 8c ₁₎ modulation Data (ID information data) is stored. Subsequently, the ID information management function unit 8d ₄ stores (overwrites) the address (address C) associated with the stored information data storage region 8c ₁ in the address storage region 8c ₂ of the storage unit 8c. Subsequently, the ID information management function unit 8d ₄ stores the history information data in the information data storage area 8c ₁ associated with the address E among the plurality of information data storage areas 8c ₁ .

The authentication information management function unit 8d ₅ is associated with the information data storage area 8c ₁ associated with the address D among the plurality of information data storage areas 8c ₁ . When the authentication information management function unit 8d ₅ determines that the processing content determination unit 8d ₁ executes the authentication information management process, the modulation data output from the non-contact interface 8a (for example, the authentication information is used). Information management processing for authentication is performed. Subsequently, the authentication information management function unit 8d ₅ was processing a plurality of information data information associated with one of the storage area 8c ₁ data storage area 8c ₁ (information of the address D data storage area 8c ₁₎ Modulation data (authentication information data) is stored. Subsequently, the authentication information management function unit 8d ₅ stores the address (address D) associated with the stored information data storage region 8c ₁ in the address storage region 8c ₂ of the storage unit 8c. Subsequently, the authentication information management function unit 8d ₅ stores the history information data in the information data storage area 8c ₁ associated with the address E among the plurality of information data storage areas 8c ₁ .

As a result, the electronic wallet function unit 8d ₂ , the point storage function unit 8d ₃ , the ID information management function unit 8d ₄ and the authentication information management function unit 8d ₅ (each unit of the arithmetic processing unit 8d) have a plurality of information data storage areas 8c. ₁ of any one of the processing units 8d ₂ , 8d ₃ , 8d ₄ , and 8d ₅ is the last balance information data, point information data, ID information data, authentication information data, or history information data (information data) and stores the information stored thereon data address of the storage area 8c ₁ address storage area 8c ₂ (address storage area 8c ₂ address 1).

When a read command (first read command, second read command) is transmitted from the control microcomputer 4, the data acquisition unit 8d ₆ stores the storage area (information data storage area 8c ₁ , address storage area) of the storage unit 8c according to the read command. 8c ₂ ) Data acquisition processing for acquiring address and information data is executed. In the data acquisition process, the data acquisition unit 8d ₆ transmits the acquired address and information data to the control microcomputer 4. Details of the data acquisition process will be described later.
In this embodiment, the electronic wallet function unit 8d ₂ , the point storage function unit 8d ₃ , the ID information management function unit 8d ₄ and the authentication information management function unit 8d ₅ (function of the IC card 1) and the information data storage area 8c _{Although an} example in which 1 is associated with one-to-one is shown, other configurations may be adopted. For example, the function of the IC card 1 and the information data storage area 8c ₁ may be associated other than one-to-one.

(Calculation processing)
Next, command transmission processing executed by the control microcomputer 4 will be described. The command transmission process is executed when pressing of the push button 6 is detected.
FIG. 5 is a flowchart showing command transmission processing.
As shown in FIG. 5, in step S101, the control microcomputer 4 starts supplying power to the IC chip 8 via the contact interface 8b.
Then, it transfers to step S102 and the control microcomputer 4 establishes communication between the control microcomputer 4 and the IC chip 8 via the contact interface 8b.
Subsequently, the process proceeds to step S103, and the control microcomputer 4 polls the arithmetic processing unit 8d through the contact interface 8b to determine whether communication is possible.

Then the process proceeds to step S104, the control microcomputer 4, the contact interface 8b through the first read command IC chip which is a command to retrieve the address from the address storage area 8c ₂ associated with the address 1 8 Send to. Thus, when the first read command is transmitted from the control microcomputer 4, the IC chip 8 acquires an address from the address storage area 8 c ₂ associated with the address 1 in accordance with the transmitted first read command. Then, the IC chip 8 transmits the acquired address to the control microcomputer 4.

Then the process proceeds to step S105, the control microcomputer 4, the contact interface 8b through, the address stored from the IC chip 8 in the address storage area 8c ₂ associated with the address 1 is transmitted, The transmitted address is set as the variable value of the variable X.
Then the process proceeds to step S106, the control microcomputer 4 via a contact interface 8b, the address represented by the variable value of the variable X (hereinafter, also referred to as acquisition address) from the information data storage area 8c ₁ associated with the A second read command, which is a command for acquiring information data, is transmitted to the IC chip 8. Thus, IC chip 8, the second read command is sent from the control microcomputer 4, the transmitted second read acquires address information from the information data storage area 8c ₁ associated with the data (balance information in accordance with the command Data, point information data, ID information data, authentication information data, history information data). Then, the IC chip 8 transmits the acquired information data to the control microcomputer 4 as presentation data.

Subsequently, the process proceeds to step S107, and when the presentation data is transmitted from the IC chip 8 via the contact interface 8b, the control microcomputer 4 acquires the transmitted presentation data.
Subsequently, the process proceeds to step S108, and the control microcomputer 4 stops the supply of power to the IC chip 8 via the contact interface 8b.
Subsequently, the process proceeds to step S109, and the control microcomputer 4 drives the display unit 5 based on the presentation data acquired in step S107, and then ends this calculation process. Thereby, the display part 5 displays the information which the acquired presentation data represents on a display surface.

Next, data acquisition processing executed by the data acquisition unit 8d ₆ will be described. The data acquisition process is executed when a read command (first read command, second read command) is transmitted from the control microcomputer 4 via the contact interface 8b.
FIG. 6 is a flowchart showing the data acquisition process.
As shown in FIG. 6, in step S201, the data acquisition unit 8d ₆ is transmitted when a read command (first read command, second read command) is transmitted from the control microcomputer 4 via the contact interface 8b. According to the read command, the address and information data are acquired from the storage area (information data storage area 8c ₁ , address storage area 8c ₂ ) of the storage unit 8c associated with the address indicated by the read command. Then, the data acquisition unit 8d ₆ transmits the acquired address and information data to the control microcomputer 4 via the contact interface 8b, and then ends this calculation process. Thus, when the first read command is transmitted from the control microcomputer 4 via the contact interface 8b, the data acquisition unit 8d ₆ is associated with the address 1 in accordance with the transmitted first read command. to get the address from 8c _2. Subsequently, the data acquisition unit 8d ₆ transmits the acquired address (acquisition address) to the control microcomputer 4. On the other hand, when the second read command is transmitted from the control microcomputer 4, the data acquisition unit 8 d ₆ receives information data (balance) from the information data storage area 8 c ₁ associated with the acquisition address according to the transmitted second read command. Information data, point information data, ID information data, authentication information data, history information data). Subsequently, the data acquisition unit 8d ₆ transmits the acquired data to the control microcomputer 4 as presentation data.

(Operation, action, etc.)
Next, the operation of the IC card 1 will be described.
FIG. 7 is an explanatory diagram for explaining the operation of the IC card 1.
First, it is assumed that the user of the IC card 1 holds the IC card 1 over the card reader / writer in order to make payment using the electronic wallet function of the IC card 1. Then, the arithmetic processing unit 8d performs arithmetic processing such as addition and subtraction for calculating the balance information of the electronic money after payment. Subsequently, the arithmetic processing section 8d is to store the information data after processing in the information storage section 8c data storage area 8c ₁ (information address A is associated with a data storage area 8c _1). Subsequently, the arithmetic processing section 8d is the cause (overwrites) stores the address (address A) in the address storage area 8c ₂ of the storage unit 8c associated with the information data storage area 8c ₁ having stored.

Subsequently, it is assumed that the user of the IC card 1 presses the pressing button 6. Then, the control microcomputer 4 transmits a first read command to the IC chip 8 (steps S101, S102, S103, and S104 in FIG. 5). When the first read command is sent from the control microcomputer 4, IC chip 8 acquires an address (address A) from the address storage area 8c ₂ associated with the address 1 in accordance with a first read command transmitted ( Step S201 in FIG. 6). Then, the IC chip 8 transmits the acquired address (address A) to the control microcomputer 4 (step S201 in FIG. 6). Subsequently, when an address (address A) is transmitted from the IC chip 8, the control microcomputer 4 sets the transmitted address (address A) as a variable value of the variable X (step S105 in FIG. 5). Subsequently, the control microcomputer 4 transmits a second read command to the IC chip 8 via the contact interface 8b (step S106 in FIG. 5). When the second read command is transmitted from the control microcomputer 4, the IC chip 8 causes the information data storage area 8c associated with the address (address A) represented by the variable value of the variable X according to the transmitted second read command. ₁ acquires information data (balance information data) from, and transmits to the control microcomputer 4 the acquired information data (balance information data) as the presentation data.

Subsequently, when the presentation data is transmitted from the IC chip 8, the control microcomputer 4 acquires the transmitted presentation data via the contact interface 8b (step S107 in FIG. 5). Subsequently, the control microcomputer 4 drives the display unit 5 based on the acquired presentation data (Steps S108 and S109 in FIG. 5). As a result, the display unit 5 displays the information represented by the information data stored in the information data storage area 8c ₁ at the address A. That is, as shown in FIG. 7A, the display unit 5 displays the balance of electronic money represented by the balance information data. At that time, the display unit 5 also displays the initial letter “B” of the English word balance representing the balance.

Similarly, it is assumed that the user of the IC card 1 holds the IC card 1 over the card reader / writer in order to exchange points using the point storage function of the IC card 1. Then, the arithmetic processing unit 8d performs arithmetic processing such as addition and subtraction for calculating the points after giving and receiving. Subsequently, the arithmetic processing section 8d is to store the information data after processing in the information storage section 8c data storage area 8c ₁ (information address B is associated with a data storage area 8c _1). Subsequently, the arithmetic processing section 8d is the cause (overwrites) stores the address (address B) in the address storage area 8c ₂ of the storage unit 8c associated with the information data storage area 8c ₁ having stored.

Subsequently, it is assumed that the user of the IC card 1 presses the pressing button 6. Then, the control microcomputer 4 transmits a first read command to the IC chip 8 (steps S101, S102, S103, and S104 in FIG. 5). When the first read command is sent from the control microcomputer 4, IC chip 8 acquires an address (address B) from the address storage area 8c ₂ associated with the address 1 in accordance with a first read command transmitted ( Step S201 in FIG. 6). Then, the IC chip 8 transmits the acquired address (address B) to the control microcomputer 4 (step S201 in FIG. 6). Subsequently, when an address (address B) is transmitted from the IC chip 8, the control microcomputer 4 sets the transmitted address (address B) as a variable value of the variable X (step S105 in FIG. 5). Subsequently, the control microcomputer 4 transmits a second read command to the IC chip 8 via the contact interface 8b (step S106 in FIG. 5). When the second read command is transmitted from the control microcomputer 4, the IC chip 8 causes the information data storage area 8c associated with the address (address B) represented by the variable value of the variable X according to the transmitted second read command. ₁ acquires information data (point information data) from, and transmits to the control microcomputer 4 the acquired information data (point information data) as the presentation data.

Subsequently, when the presentation data is transmitted from the IC chip 8, the control microcomputer 4 acquires the transmitted presentation data via the contact interface 8b (step S107 in FIG. 5). Subsequently, the control microcomputer 4 drives the display unit 5 based on the acquired presentation data (Steps S108 and S109 in FIG. 5). As a result, the display unit 5 displays information represented by the information data stored in the information data storage area 8c ₁ at the address B. That is, the display unit 5 displays the points represented by the point information data as shown in FIG. At that time, the display unit 5 also displays the initial letter “P” of the English word “point” representing the point.

Thus, in the present embodiment, when the push button 6 is pressed, the control microcomputer 4 and the IC chip 8, an address storage area 8c ₂ to the stored address (A, B, etc.) more on the basis of obtaining information data (balance information data, point information data, etc.) stored in one of the information data storage area 8c ₁ as presentation data. The display unit 5 displays the acquired presentation data (balance information data, point information data, etc.). According to such a configuration, by rewriting the address address storage area 8c ₂ is stored, the display unit 5 of the communication medium, it is possible to display a variety of presentation data.

In the present embodiment, the IC card 1 in FIG. 1 constitutes a communication medium. Similarly, an external reader / writer constitutes an external device. The storage unit 8c of FIG. 2, the information data storage area 8c ₁ in FIG. 3 constitutes the information data storage area. Further, the storage unit 8c of FIG. 2, the address storage area 8c ₂ in FIG. 3 constituting the address storage area. Moreover, the press button 6 of FIG. 1, FIG. 2 comprises an operation part. Further, the control microcomputer 4 in FIG. 2 constitutes a requested operation detection unit. Further, the control microcomputer 4, the contact interface 8b, and the arithmetic processing unit 8d in FIG. 2 constitute a data acquisition unit. Further, the display unit 5 in FIGS. 1 and 2 constitutes a display unit. Further, the IC card 1 of FIG. 1 constitutes an IC card. Further, the electronic wallet function unit 8d ₂ , the point storage function unit 8d ₃ , the ID information management function unit 8d ₄ , and the authentication information management function unit 8d ₅ of FIG. 4 constitute an arithmetic processing execution unit.

(Effect of this embodiment)
This embodiment has the following effects.
(1) control microcomputer 4 and the IC chip 8 has detected the pressing of the push button 6, a plurality of information based on the address stored in the address storage area 8c ₂ (address A, B, C, D, E) one for the stored information data in the data storage area 8c ₁ acquires (balance information data, point information data, ID information data, authentication information data, history information data) as the presentation data. And the display part 5 displays the acquired presentation data.
According to such a configuration, by rewriting the address address storage area 8c ₂ is stored, the display unit 5 of the communication medium, it is possible to display a variety of presentation data.

(2) Each of the electronic wallet function unit 8d ₂ , the point storage function unit 8d ₃ , the ID information management function unit 8d ₄ and the authentication information management function unit 8d ₅ (each unit of the arithmetic processing unit 8d) stores a plurality of information data It is associated with _one of the areas 8c1. Further, each part of the arithmetic processing unit 8d is and processing the received data, information information data is an arithmetic processing data associated with one of the plurality of information data storage area 8c ₁ data storage area 8c ₁ Remember me.
According to such a configuration, the electronic wallet function unit 8d ₂ , the point storage function unit 8d ₃ , the ID information management function unit 8d ₄ and the authentication information management function unit 8d ₅ , that is, various functions and information data of the IC card 1 The storage areas 8c ₁ can be associated with each other.

(Modification)
When the control microcomputer 4 and the IC chip 8 continuously detect the operation (press) of the push button 6 at intervals within a preset setting time (for example, 1 second), the operation (press) of the push button 6 is detected. the each time it detects, may be configured to sequentially acquire the information data stored in each of the plurality of information data storage area 8c ₁ as the presentation data. Specifically, whenever the control microcomputer 4 detects an operation (press) of the push button 6, the variable value of the variable X is sequentially rewritten in the order of addresses A, B, C, D, and E. Subsequently, the third read is a command for the control microcomputer 4 to acquire information data from the information data storage area 8c ₁ associated with an address (hereinafter also referred to as a rewrite address) represented by the variable value of the rewritten variable X. A command is transmitted to the IC chip 8. Moreover, IC chip 8, the control by the microcomputer 4 when the third read command is transmitted, the transmitted third read command information data from the storage area 8c ₁ Information data (balance information data associated with the rewrite address according , Point information data, ID information data, authentication information data, history information data). Subsequently, the IC chip 8 transmits the acquired information data to the control microcomputer 4 as presentation data. According to such a configuration, arbitrary information data can be displayed as presentation data.

Moreover, it is good also as a structure provided with two or more press buttons 6. FIG. In this case, each of the plurality of push buttons 6 is associated with an address of a different information data storage area 8c ₁ and is operated (pressed) each time the control microcomputer 4 detects the operation (press) of the push button 6. may obtain the address information data storage area 8c ₁ associated with the push button 6.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings.
In addition, the same code | symbol is used about the structure similar to 1st Embodiment.
In the present embodiment, when the IC chip 8 receives a read command (fourth read command (described later)), the acquisition of an address from the address storage area 8c ₂ and the acquisition of information data from the information data storage area 8c ₁ This is different from the first embodiment in that both are performed.
FIG. 8 is a flowchart showing command transmission processing.
FIG. 9 is a flowchart showing data acquisition processing.
Specifically, in this embodiment, step S301 in FIG. 8 is adopted instead of steps S104 to S106 in FIG. 5 of the first embodiment. In the present embodiment, steps S401 and S402 in FIG. 9 are employed instead of step S201 in FIG. 6 of the first embodiment.

In the step S301, the control microcomputer 4 via a contact interface 8b, are associated with the address is acquired together to obtain an address from the address storage area 8c ₂ associated with the address 1 (acquisition address) a fourth read command is a command for acquiring the presentation data from the information data storage area 8c ₁ transmits to the IC chip 8. Thus, when the fourth read command is transmitted from the control microcomputer 4, the IC chip 8 acquires an address from the address storage area 8 c ₂ associated with the address 1 in accordance with the transmitted fourth read command. Subsequently, the IC chip 8 receives information data (balance information data, point information data, ID information data, authentication information data, history information) from the information data storage area 8c ₁ associated with the acquired address (acquired address). Data). Then, the IC chip 8 transmits the acquired information data to the control microcomputer 4 as presentation data.

In the step S401, IC chip 8, the fourth read command is sent from the control microcomputer 4, to obtain the address from the address storage area 8c ₂ associated with the address 1 in accordance with a fourth read command transmitted .
In the step S402, IC chip 8, the address information obtained data from the information data storage area 8c ₁ associated with the (acquisition address) (balance information data in the step S401, the point information data, ID information data, authentication Business information data, history information data). Then, the IC chip 8 transmits the acquired information data as presentation data to the control microcomputer 4 and then ends this calculation process.
Other configurations are the same as those of the first embodiment.

1 IC card (communication medium, IC card)
2 Non-contact communication antenna 3 Power supply unit 4 Control microcomputer (request operation detection unit, data acquisition unit)
5 Display part (display part)
6 Press button (operation part)
7 Switch 8 IC chip 8a Non-contact interface 8b Contact interface (data acquisition unit)
8c storage unit (information data storage area, address storage area)
8c ₁ information data storage area (information data storage area)
8c ₂ address storage area (address storage area)
8d arithmetic processing unit (data acquisition unit)
8d ₂ electronic wallet function unit (calculation processing execution unit)
8d ₃ point memory function part (calculation process execution part)
8d ₄ ID information management function part (arithmetic processing execution part)
8d ₅ authentication information management function part (calculation process execution part)

Claims (4)

A communication medium for exchanging data with an external device and processing the received data,
A plurality of information data storage areas for storing information data, which is data subjected to arithmetic processing;
An address storage area for storing one address of the plurality of information data storage areas;
An operation unit that can be operated by a user to request display;
A requested operation detection unit for detecting an operation of the operation unit;
When the requested operation detection unit detects an operation of the operation unit, information data stored in one of the plurality of information data storage areas is acquired as presentation data based on an address stored in the address storage area A data acquisition unit to
And a display unit that displays information represented by the presentation data acquired by the data acquisition unit.   Information associated with one of the plurality of information data storage areas, the received data is subjected to arithmetic processing, and the information data that is the arithmetic processed data is associated with the information data among the plurality of information data storage areas The communication medium according to claim 1, further comprising a plurality of arithmetic processing execution units stored in a data storage area.   When the requested operation detection unit detects the operation of the operation unit continuously at intervals within a preset time, the requested operation detection unit detects an operation of the operation unit. The communication medium according to claim 1, wherein information data stored in each of the plurality of information data storage areas is sequentially acquired as presentation data. The communication medium according to any one of claims 1 to 3, wherein the communication medium is an IC card.

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