JP2005228189A - Portable information storage medium and program therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable information storage medium capable of attaining speeding up and efficiency promotion of processing and improvement in security, and a program therefor. <P>SOLUTION: An IC card 10 comprises first and second antennas 11 and 12 receiving electromagnetic waves transmitted from an external terminal 20; a direction detecting circuit 141 and a direction detection part 151 detecting the direction to the external terminal 20 based on the receiving order of electromagnetic wave by the antennas and the setting positions of the antennas; a selection part 152 selecting an application according to the detection result; and a display part displaying the direction to the external terminal 20 and the association of the application to be selected in case that the direction is detected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable information storage medium including a plurality of antennas and a program thereof.

  In recent years, in the field of portable information storage media, multi-application IC cards in which a plurality of applications are mounted on one IC card are used. In this multi-application IC card, the functions of a plurality of IC cards are integrated, and for the user, which card should be inserted while standing in front of an external terminal such as an ATM or the like for carrying a plurality of cards. Convenience has been improved. Note that the portable information storage medium is an IC card, a SIM card (Subscriber Identity Module), a UIM card (User Identity Module), an IC tag, a SIM card or a UIM card inserted into a mobile phone or a mobile holder, and the like. A communication unit that mediates communication between the external terminal and the IC, an interface, and the like. In order to access data inside the IC, a predetermined command by the external CPU such as transmission of a command (processing request) by the CPU of the external terminal is provided. This is a highly confidential portable information processing apparatus that requires this processing. In addition, loading an application means storing the application in a state where processing for the application can be performed.

As multi-application IC cards, there are a MULTOS card and a JavaCard ("JAVA" is a registered trademark), which are loaded with applications written in the MEL (Multis Executable Language) language and Java language, respectively. It is an IC card that can be deleted at any time and can be loaded with a plurality of applications. In general, an IC card has functions such as CPU, RAM, ROM, and EEPROM on one chip, and is a contact type, non-contact type, or both contact type / non-contact type interface (hereinafter referred to as “I / F”). There is something that has.
The multi-application IC card receives power supply from an external terminal such as a reader / writer (hereinafter referred to as “R / W”), receives an initial response request, and returns an initial response to this request. Through these processes, a communication path between the IC card and the external terminal is established, and then an application is selected, and the process for this application is started (for example, see Patent Document 1).

  The selection is to set a piece of information as a processing target, and the application selection is specified by this command in response to a selection request (select command) received from the external terminal by the IC card. The identification information for identifying the file of the application to be stored in the RAM and set as an access target of a command such as a current file. By this selection, a processing target application is determined, and processing for the application can be started. Therefore, in order for an external terminal to process a multi-application IC card, it is necessary to designate and select a predetermined application that can be processed by the command using a command.

Therefore, an IC card that communicates in a non-contact manner requires a high-speed processing due to its nature, but takes a long time for the transaction for this selection, and the processing speed (so-called transaction processing speed) is slow. Thus, there is a problem that the user lacks convenience such as having to wait with the IC card on the external terminal until the end of processing.
Also, when there are multiple non-contact IC cards within the communication range of the external terminal, such as when multiple IC cards are put in a wallet, even IC cards that are not used on the spot can be operated. Therefore, the external terminal has to perform a communication collision prevention process (Anticollision) process for selecting a necessary IC card from the plurality of IC cards, and there is a problem that the time required for the transaction becomes longer. (See ISO / IEC 14443-3.)
On the other hand, multi-application IC cards that have a plurality of applications that perform processing by non-contact communication such as commuter pass applications and electronic money have appeared. Since the external terminal can select an application against the intention of the user from among these applications and perform processing, there is a risk of lack of security.
JP 2003-216585 A

  An object of the present invention is to provide a portable information storage medium capable of speeding up processing, improving efficiency, and improving security, and a program thereof.

  The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to the Example of this invention is attached | subjected and demonstrated, it is not limited to this. That is, the invention of claim 1 is based on a plurality of antennas (11, 12, 11-2, 12-2) that receive electromagnetic waves transmitted from an external terminal (20), and differences in inputs from the respective antennas. A portable information storage medium (10, 10-2) including processing means (15, 15-2) for performing processing.

  According to a second aspect of the present invention, in the portable information storage medium according to the first aspect, the processing means performs processing within a limited range based on a difference in input from the antennas. Portable information storage medium (10, 10-2).

  According to a third aspect of the present invention, in the portable information storage medium according to the first or second aspect, the processing means selects information to be processed based on a difference in input from the antennas. It is a portable information storage medium (10, 10-2) characterized by having a selection means.

  According to a fourth aspect of the present invention, in the portable information storage medium according to any one of the first to third aspects, the position where the plurality of antennas are provided, and the plurality of antennas receive electromagnetic waves. And a direction detecting unit that detects a direction with respect to the external terminal that has transmitted the electromagnetic wave based on the order, and the processing unit performs processing according to the direction detected by the direction detecting unit. A portable information storage medium (10).

  According to a fifth aspect of the present invention, in the portable information storage medium according to the fourth aspect, the direction with respect to the external terminal is associated with the processing performed by the processing unit when the direction is detected by the direction detecting unit. A portable information storage medium (10) characterized by comprising display means (19) for displaying.

  According to a sixth aspect of the present invention, in the portable information storage medium according to any one of the first to fifth aspects, the plurality of antennas have resonance circuits that resonate at different frequencies, respectively, and the processing The means is a portable information storage medium (10-2) that performs processing based on which of the plurality of antennas resonates with electromagnetic waves transmitted from an external terminal.

  The invention of claim 7 is a portable information storage medium (10, 10-2) comprising a plurality of antennas (11, 12, 11-2, 12-2) for receiving electromagnetic waves transmitted from an external terminal (20). A portable information storage medium program to be executed, comprising a processing procedure (S130, S230) for performing processing based on a difference in input from each antenna. is there.

  According to an eighth aspect of the present invention, in the portable information storage medium program according to the seventh aspect, the processing procedure performs processing within a limited range based on a difference in input from the antennas. A portable information storage medium program.

  According to a ninth aspect of the present invention, in the portable information storage medium program according to the seventh or eighth aspect, the processing procedure selects information to be processed based on a difference in input from each antenna. A program for a portable information storage medium characterized by having a selection procedure (S130, S230) for performing.

  According to a tenth aspect of the present invention, in the portable information storage medium program according to any one of the seventh to ninth aspects, when the processing procedure receives an initial response request from an external terminal (S110, The portable information storage medium program includes an initial response transmission procedure (S140, S240) that is executed in S210) and transmits an initial response including a processing result in the processing procedure.

  The invention of claim 11 is the portable information storage medium program according to any one of claims 7 to 10, wherein the position at which the plurality of antennas are provided and the plurality of antennas are electromagnetic waves. And a direction detection procedure (S120) for detecting the direction with respect to the external terminal that has transmitted the electromagnetic wave, based on the order of receiving the electromagnetic waves, and the processing procedure performs processing according to the direction detected in the direction detection procedure, A portable information storage medium program characterized by the above.

  The invention of claim 12 is the portable information storage medium program according to any one of claims 7 to 11, wherein the plurality of antennas have resonance circuits that resonate at different frequencies, respectively. The processing procedure is a program for a portable information storage medium characterized in that processing is performed based on which of the plurality of antennas resonates with electromagnetic waves transmitted from an external terminal.

According to the portable information storage medium or the program of the portable information storage medium according to the present invention, the following effects can be obtained.
(1) By performing processing based on the difference in input from each antenna, the trigger of the processing and the processing guideline can be obtained from the difference in input from each antenna, thereby speeding up and increasing the efficiency of the processing. Plan. In particular, the above-described effect is obtained when selecting information to be processed such as application selection.
(2) The security is improved by performing processing within a limited range based on a difference in input from each antenna. In addition, since the user knows this limitation, it is possible to limit the processing range according to the user's intention.
(3) By detecting the direction with respect to the external terminal, it is possible to perform processing according to this direction.
(4) The orientation of the portable information storage medium with respect to the external terminal is changed by displaying the association between the orientation and the processing to be performed, such as the association between the orientation and the selected information, and notifying the user. Thus, processing according to the intention of the user can be performed, and security can be improved.
(5) The effect (1) is obtained by performing processing based on which antenna resonates with the electromagnetic wave transmitted from the external terminal. In addition, it is possible to improve security by performing processing according to electromagnetic waves transmitted from an external terminal.
(6) When an initial response request is received from an external terminal, processing is performed based on a difference in input from each antenna, and an initial response including the result is transmitted, so that communication between the external terminal and the IC card is started. This makes it possible to speed up and increase the efficiency of the processing in this stage.

  The present invention aims to speed up processing, increase efficiency, and improve security based on a plurality of antennas that receive electromagnetic waves transmitted from an external terminal, the order in which these antennas receive the electromagnetic waves, and their positions. A direction detection unit for detecting the direction with respect to the external terminal, a selection unit for selecting information to be processed according to the detection result, and information selected when the direction with respect to the external terminal and the direction are detected. It implement | achieves by a portable information storage medium provided with the display part which displays the correlation of these.

FIG. 1 is a block diagram showing the configuration of a portable information storage medium according to the present invention.
As shown in FIG. 1, the IC card 10 is placed within the communication range of an external terminal 20 that is an information processing terminal having an R / W that performs non-contact communication such as a ticket gate terminal. It is a non-contact type IC card that performs non-contact type communication. The IC card 10 is a multi-application IC card capable of mounting a plurality of applications, and includes an IC chip 13, a first antenna 11 and a second antenna 12 connected to the IC chip 13. ing.
Each of the first antenna 11 and the second antenna 12 includes a winding coil and a tuning capacitor connected to both ends of the winding coil, and each includes a resonance circuit having the same resonance frequency characteristic, and an IC chip. 13 interfaces 14 are connected. The first antenna 11 and the second antenna 12 perform conversion between the electromagnetic wave and the analog signal, such as receiving an electromagnetic wave transmitted from the external terminal 20 and converting it to an analog signal based on the electromagnetic induction method. An electromotive force serving as electric energy for executing the process is induced, and communication between the external terminal 20 and the IC chip 13 is mediated.

FIG. 2 is an explanatory diagram for explaining the arrangement of the first antenna 11 and the second antenna 12. In FIG. 2, the first antenna 11 is indicated by a broken line, and the second antenna 12 is indicated by a solid line. However, this is for showing different antennas, and the number of turns is also set to one for convenience of description. Therefore, the shape of each antenna 11, 12 such as the number of turns is not limited to this (hereinafter the same in FIGS. 6 and 8).
As shown in FIG. 2, the first antenna 11 and the second antenna 12 are arranged so that the surfaces surrounded by the respective coils are shifted in the short side direction in parallel with the surface of the IC card 10. Is provided inside.

As shown in FIG. 1, the IC chip 13 includes a CPU 15, an interface 14 connected to the CPU 15, a RAM 16, a ROM 17, a nonvolatile memory 18, and the like.
The interface 14 includes a modulation circuit and a demodulation circuit, and is an interface that mediates input / output between the first antenna 11 and the second antenna 12 and the CPU 15. The interface 14 includes a direction detection circuit 141.
When the IC card 10 is brought into the communication range of the external terminal 20, the direction detection circuit 141 receives the electromagnetic wave transmitted from the external terminal 20, either the first antenna 11 or the second antenna 12 first. In other words, this is a circuit for detecting which of the analog signals is input first. The detection is performed by comparing the power supply start time and the like. For example, when the IC card 10 in FIG. 2 is leaned from the back side (first antenna 11 side) to the external terminal 20 (hereinafter, the direction of the IC card 10 is referred to as “positive direction”), the first antenna 11 is used. When receiving the electromagnetic waves in the order of the second antenna 12 and confronting the external terminal 20 from the front of the IC card 10 (hereinafter, the direction of the IC card 10 is referred to as “reverse direction”), the second antenna 12 is used. When receiving electromagnetic waves in the order of the first antenna 11 and leaning on the external terminal 20 from the right or left side of the IC card 10 (hereinafter, the direction of the IC card 10 is referred to as “lateral direction”), the first antenna 11 is used. And the 2nd antenna 12 receives electromagnetic waves substantially simultaneously. The direction detection circuit 141 outputs a signal indicating the direction (direction) of the IC card 10 to the external terminal 20 as a detection result to the CPU 15.

The RAM 16, ROM 17, and nonvolatile memory 18 are storage devices for storing information such as programs necessary for the processing of the CPU 15. The RAM 16 is a volatile memory and is used as a work area for the CPU 15 to perform processing.
The ROM 17 is a nonvolatile read-only memory, and stores programs such as an operating system (OS) and an execution environment.
The non-volatile memory 18 is a non-volatile rewritable memory such as an EEPROM, a flash memory, or an FRAM, and is normally used as a user work area, a program area, and the like. , Each of which is referred to as “first application”, “second application”, and “third application”). Further, as shown in Table 1, the non-volatile memory 18 stores selection management information in which these three applications are respectively associated with the directions (forward direction, reverse direction, and horizontal direction) of the corresponding IC card 10. .

The CPU 15 is a central processing unit that performs various operations and controls, and controls the IC card 10 in an integrated manner. The CPU 15 executes a program stored in a memory such as the ROM 17 and the nonvolatile memory 18, thereby executing the direction detection unit 151. The selection unit 152 and the like are realized. The direction detection unit 151 detects the direction (forward direction, reverse direction, or horizontal direction) of the IC card 10 with respect to the external terminal 20 based on the signal output from the direction detection circuit 141.
The selection unit 152 selects an application based on the detection result of the direction detection unit 151 and the selection management information stored in the nonvolatile memory 18. That is, when the direction detection unit 151 detects the forward direction, the reverse direction, and the horizontal direction, the first application, the second application, and the third application are selected, respectively.

FIG. 3 is a front view of the IC card 10, and the upper part of the IC card 10 corresponds to the back side (the first antenna 11 side) in FIG. 2.
As shown in FIG. 3, the IC card 10 is provided with a display unit 19 that displays a direction on the surface and an association with an application selected by the selection unit 152 when the IC card 10 faces the external terminal 20 in this direction. ing. The display unit 19 notifies the user of the direction to bend the external terminal 20, and the user looks at the display on the display unit 19 and processes the first application on the IC card 10. In the case where the IC card 10 is to be performed in the forward direction, the IC card 10 is in the reverse direction and in the lateral direction, respectively, The

FIG. 4 is a flowchart showing the operation of the portable information storage medium according to the present invention and its program.
In step 110 (hereinafter, “step” is referred to as “S”), the IC card 10 is trapped by the external terminal 20, receives power supply from the external terminal 20, receives a reset signal, and is activated. The direction detection unit 151 detects the orientation of the IC card 10 with respect to the external terminal 20 (S120), and the selection unit 152 selects an application corresponding to the detected orientation (S130).
The IC card 10 transmits the initial response corresponding to the reset signal including information for setting the communication protocol, including the result of this selection, to the external terminal 20 (S140), and between the external terminal 20 and the IC card 10 Is established, and application processing can be started (S150).

As described above, since the IC card 10 selects a predetermined application according to the orientation with respect to the external terminal 20, the time required for a selection transaction such as transmission / reception of a selection command and a response thereof is saved, and processing is speeded up and made efficient. It became possible to plan.
Further, the role of the plurality of IC cards 10 can be explicitly given to one by the difference in the direction in which the user holds the IC card 10, and the external terminal 20 can be one from the plurality of IC cards 10. There is an expectation that the processing of the anti-collision measure for selecting can be reduced, and it is possible to further shorten the processing time and speed up the processing.

Further, the IC card 10 displays the orientation and the association with the application selected in this orientation and notifies the user, so that the user can change the orientation of the portable information storage medium with respect to the external terminal. It became possible to perform the corresponding processing. For example, a plurality of applications can perform processing for one service such as fee settlement such that the first application is electronic money and the second application is points (money reduction from points). Can select the orientation of the IC card 10 with respect to the external terminal 20 as an instruction for selection by the user.
On the other hand, since the application is selected according to the user's intention, the user can limit the applications to be selected, and the security can be improved.

FIG. 5 is a block diagram showing the configuration of the portable information storage medium according to the present invention, and the portable information storage medium in the second embodiment is an IC card 10-2. In addition, the same code | symbol is attached | subjected to the part which fulfill | performs the same function as Example 1 mentioned above, and the overlapping description is abbreviate | omitted suitably.
The IC card 10-2 has substantially the same configuration as the IC card 10 in the first embodiment, and the first antenna 11- connected to the IC chip 13-2 and the interface 14-2 of the IC chip 13-2. 2 and the second antenna 12-2.

FIG. 6 is an explanatory diagram for explaining the arrangement of the first antenna 11-2 and the second antenna 12-2.
As shown in FIG. 6, the first antenna 11-2 and the second antenna 12-2 are provided at the same positions as the first antenna 11 and the second antenna of the first embodiment. The first antenna 11-2 and the second antenna 12-2 have resonance circuits having different resonance frequencies, respectively, convert between electromagnetic waves and analog signals based on the electromagnetic induction method, and perform external terminal 20 and IC chip 13-2. Mediate communication between them.

As shown in FIG. 5, the IC chip 13-2 includes a CPU 15-2, an interface 14-2 connected to the CPU 15-2, a RAM 16, a ROM 17, a nonvolatile memory 18-2, and the like.
The interface 14-2 is an interface that mediates input / output between the first antenna 11-2 and the second antenna 12-2 and the CPU 15-2, and includes a resonance antenna detection circuit 142.
The resonance antenna detection circuit 142 determines which resonance circuit of the first antenna 11-2 or the second antenna 12-2 is resonating with the electromagnetic wave transmitted from the external terminal 20 based on the magnitude of the electromotive force. Is a circuit for detecting The detection result signal is output to the CPU 15-2.

  The nonvolatile memory 18-2 stores two applications, a first application and a second application. In addition, as shown in Table 2, the nonvolatile memory 18-2 stores selection management information in which the corresponding antennas are associated with these two applications.

  The CPU 15-2 is a central processing unit that performs various operations and controls and controls the IC card 10-2 in an integrated manner, and executes programs stored in a memory such as the ROM 17 and the nonvolatile memory 18-2. Thus, the selection unit 152, the resonance antenna detection unit 153, and the like are realized. Based on the signal output from the resonance antenna detection circuit 142, the resonance antenna detection unit 153 detects which resonance circuit of the first antenna 11-2 or the second antenna 12-2 is resonating. The selection unit 152 selects an application based on the detection result of the resonance antenna detection unit 153 and the selection management information stored in the nonvolatile memory 18-2. That is, when the resonant antenna detection unit 153 detects that the first antenna 11-2 is resonating, it selects the first application and detects that the second antenna 12-2 is resonating. Selects the second app.

FIG. 7 is a flowchart showing the operation of the portable information storage medium according to the present invention and its program.
In S210, the IC card 10-2 performs the same processing as the IC card 10 in the first embodiment. The resonant antenna detection unit 153 detects which antenna 11-2, 12-2 is resonating (S220), and the selection unit 152 selects an application corresponding to the detected antenna (S230). Thereafter, the IC card 10-2 performs the same processing as that of the IC card 10 in the first embodiment, and enters a state where application processing can be started (S240, S250).

As described above, the IC card 10-2 can speed up the processing and increase the efficiency by selecting an application corresponding to the frequency of the electromagnetic wave transmitted from the external terminal 20.
In addition, due to the difference in frequency of electromagnetic waves transmitted from the external terminal 20, the role of the plurality of IC cards 10 can be explicitly given to one sheet, and the external terminal 20 can be one sheet from the plurality of IC cards 10. There is an expectation that the processing of the anti-collision measure for selecting can be reduced, and it is possible to further shorten the processing time and speed up the processing.
Furthermore, since the IC card 10-2 selects an application corresponding to each of the antennas 11-2 and 12-2, the applications that can be selected can be limited depending on the frequency of the electromagnetic wave transmitted from the external terminal 20, and security can be limited. It became possible to improve.

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention. For example, in each embodiment, the IC cards 10 and 10-2 are described as the portable information storage medium. However, the portable information storage medium is not limited to this, and a SIM card, UIM card, IC tag, mobile phone or It may be another portable information storage medium such as a SIM card or UIM card inserted in the portable holder.

  The IC cards 10 and 10-2 perform non-contact communication using the electromagnetic induction method with the external terminal 20, but drive the IC chip by generating a potential difference due to the distance difference between the two antennas and the external terminal. You may carry out by an electrostatic coupling system. By detecting which antenna has a high potential, the direction with respect to the external terminal can be detected. A communication system is not limited as long as a plurality of antennas that receive an electromagnetic field transmitted from an external terminal are provided and a difference in input of each antenna can be detected.

In the first embodiment, as shown in FIG. 8, the IC card 10 has two layers of the first antenna 11 and the second antenna, that is, the surfaces formed by the coils of the antennas overlap each other in the front and back directions with a predetermined distance therebetween. You may arrange as follows. Detecting whether the electromagnetic wave transmitted from the external terminal 20 passes from the front or back of the IC card 10, and changing the application to be selected when the front side of the IC card 10 faces the external terminal 20 or the back side And the same effect can be obtained.
Further, the IC card 10 may be provided with the first antenna 11 and the second antenna 12 in the long side direction (right side and left side) in FIG. In this case, the IC card 10 can detect each of the right direction, the left direction, and the vertical direction. Further, depending on the relative positions of the antennas arranged, various directions parallel to the surface of the IC card 10 such as an oblique direction can be detected. Furthermore, when the portable information storage medium can be installed by changing the direction of the antenna, such as a cube, from the direction parallel to the surface of the IC card 10, install the plurality of antennas by inclining the directions of the antennas in the vertical direction. Also good. It becomes possible to detect more various directions.

  In each embodiment, the first antennas 11 and 11-2 and the second antennas 12 and 12-2 may be arranged so that part or all of them overlap in the front and back direction of the IC cards 10 and 10-2. In the first embodiment, it is only necessary to detect the direction of the IC card 10 with respect to the external terminal 20 based on the difference in input from the first antenna 11 and the second antenna 12, and in the second embodiment, the first antenna It is only necessary that 11-2 and the second antenna 12-2 can resonate with electromagnetic waves having different frequencies transmitted from the external terminal 20, respectively.

  In each embodiment, the IC cards 10 and 10-2 include two antennas 11, 12, 11-2, and 12-2. However, the number of antennas is not limited to this, and a plurality of antennas are provided. What is necessary is just to be able to detect a difference in input from each antenna such as the order in which the electromagnetic waves are received. With more antennas, more patterns of differences can be detected, and many types of processing can be performed according to this input difference, such as selecting one of many applications. It is possible to improve efficiency and speed.

In the first embodiment, the IC card 10 includes the direction detection circuit 141 in the interface 14 inside the IC chip 13. However, the IC card 10 may be provided outside the IC chip 13 and output a detection result signal to the CPU 15. If possible, it is not limited to which one is provided.
The same applies to the resonant antenna detector 142 of the second embodiment.

In each embodiment, the IC cards 10 and 10-2 select an application based on a difference in input from the first antennas 11 and 11-2 and the second antennas 12 and 12-2. The process performed based on the difference is not limited to this. By associating the input difference and each process, various processes can be performed according to the input difference.
In each embodiment, an application is selected. However, information to be selected is not limited to this, and the same effect can be obtained by associating each information to be selected with a difference in input. It is possible to obtain

  In the first embodiment, the IC card 10 selects an application according to the detected direction, but may perform processing within a range limited based on the detected direction. For example, the IC card 10 stores the direction and the range of executable processes such as the types of processes that can be performed in association with each other, and displays this association on the display unit 19. Based on this association, the IC card 10 can perform all the processes according to the command transmitted from the external terminal 20 when detecting the positive direction, and read out when detecting the horizontal direction. Processing according to the request can be performed, but processing is not performed for the write request. It is possible to prevent the external terminal 20 from causing the IC card 10 to perform processing contrary to the user's intention, and it is possible to improve security.

Similarly, in the second embodiment, the IC card 10-2 stores each antenna 11-2 and 12-2 in association with a range of executable processes such as the types of processes that can be performed, and performs a process to be performed. You may restrict. The processing can be limited according to the frequency of the electromagnetic wave transmitted from the external terminal 20, and the security can be improved.
Further, the IC cards 10 and 10-2 may store the range of information to be processed in association with each other, and the processing may be limited by this range of information. For example, the IC cards 10 and 10-2 store the direction and the selectable application in association with each other, and can arbitrarily set how to restrict the processing such as restricting the selectable application. Is possible.

  In each embodiment, the IC cards 10 and 10-2 store the application and selection management information in the nonvolatile memories 18 and 18-2, but both may be stored in the ROM 17, and the ROM 17 and the nonvolatile memory. 18 and 18-2 may be stored separately. If what needs to be rewritten is stored in the non-volatile memories 18 and 18-2, there is no limitation on which storage device is stored.

It is a block diagram which shows the structure of a portable information storage medium. (Example 1) It is explanatory drawing explaining arrangement | positioning of the 1st antenna 11 and the 2nd antenna 12. FIG. (Example 1) 2 is a surface view of the IC card 10. FIG. (Example 1) It is a flowchart which shows operation | movement of a portable information storage medium, and its program. (Example 1) It is a block diagram which shows the structure of a portable information storage medium. (Example 2) It is explanatory drawing explaining arrangement | positioning of the 1st antenna 11-2 and the 2nd antenna 12-2. (Example 2) It is a flowchart which shows operation | movement of a portable information storage medium, and its program. (Example 2) It is explanatory drawing explaining arrangement | positioning of the 1st antenna 11 and a 2nd antenna. (Modification)

Explanation of symbols

10, 10-2 IC card 11, 11-2 First antenna 12, 12-2 Second antenna 13, 13-2 IC chip 14, 14-2 Interface 15, 15-2 CPU
16 RAM
17 ROM
18, 18-2 Non-volatile memory 19 Display unit 20 External terminal 141 Direction detection circuit 142 Resonant antenna detection circuit 151 Direction detection unit 152 Selection unit 153 Resonance antenna detection unit

Claims (12)

A plurality of antennas for receiving electromagnetic waves transmitted from an external terminal;
Processing means for performing processing based on a difference in input from each of the antennas;
A portable information storage medium comprising: The portable information storage medium according to claim 1,
The processing means performs processing within a limited range based on a difference in input from the antennas;
A portable information storage medium characterized by the above. The portable information storage medium according to claim 1 or 2,
The processing means includes selection means for selecting information to be processed based on a difference in input from each antenna.
A portable information storage medium characterized by the above. The portable information storage medium according to any one of claims 1 to 3,
Based on the position where the plurality of antennas are provided and the order in which the plurality of antennas receive electromagnetic waves, the apparatus includes direction detection means for detecting a direction with respect to the external terminal that has transmitted the electromagnetic waves,
The processing means performs processing according to the direction detected by the direction detection means;
A portable information storage medium characterized by the above. The portable information storage medium according to claim 4,
Comprising display means for displaying an association between an orientation with respect to an external terminal and processing performed by the processing means when the orientation is detected by the direction detection means;
A portable information storage medium characterized by the above. The portable information storage medium according to any one of claims 1 to 5, wherein
The plurality of antennas have resonance circuits that resonate at different frequencies, respectively.
The processing means performs processing based on which of the plurality of antennas resonates with electromagnetic waves transmitted from an external terminal;
A portable information storage medium characterized by the above. A portable information storage medium program to be executed by a portable information storage medium having a plurality of antennas for receiving electromagnetic waves transmitted from an external terminal,
Comprising a processing procedure for performing processing based on a difference in input from each of the antennas;
A portable information storage medium program characterized by the above. In the portable information storage medium program according to claim 7,
The processing procedure performs processing within a range limited based on a difference in input from each antenna,
A portable information storage medium program characterized by the above. In the portable information storage medium program according to claim 7 or 8,
The processing procedure includes a selection procedure for selecting information to be processed based on a difference in input from each antenna.
A portable information storage medium program characterized by the above. In the program of the portable information storage medium according to any one of claims 7 to 9,
The processing procedure is executed when an initial response request is received from an external terminal,
Comprising an initial response transmission procedure for transmitting an initial response including a processing result in the processing procedure;
A portable information storage medium program characterized by the above. In the program of the portable information storage medium according to any one of claims 7 to 10,
Based on the position where the plurality of antennas are provided and the order in which the plurality of antennas receive the electromagnetic waves, a direction detection procedure for detecting a direction with respect to the external terminal that has transmitted the electromagnetic waves,
The processing procedure performs processing according to the direction detected in the direction detection procedure,
A portable information storage medium program characterized by the above. In the program of the portable information storage medium according to any one of claims 7 to 11,
The plurality of antennas have resonance circuits that resonate at different frequencies, respectively.
The processing procedure performs processing based on which of the plurality of antennas resonates with electromagnetic waves transmitted from an external terminal,
A portable information storage medium program characterized by the above.

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