JP2004038708A - Ic module, ic card, and program of ic module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IC card and an IC card program, which can reduce the load at a high processing speed of an IC chip, and which can provide the benefit associated with the high processing speed. <P>SOLUTION: The IC card 10 which has a communication control processing part 142 for receiving a command from a card device 20 and for controlling the communication for transmitting a response and a command processing part 141 for processing the command for generating the response includes an internal operation reference signal generation part 143 which generates an internal operation reference signal on the basis of an external clock supplied from the card terminal 20. The communication control processing part 142 synchronized with the external clock performs the communication control process. The command processing part 141 synchronized with the internal operation reference signal performs the command process. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an IC module, an IC card, and an IC module that receive a processing request from an external device in a contact and / or non-contact manner, perform a process corresponding to the processing request, and transmit a response as a processing result to the external device. About the program.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been a demand for high-speed processing of an IC card including an IC module in order to improve convenience. In response to this request, the processing speed of an IC chip has been increasing daily. An IC module is a module stored in an IC card, an IC tag, or the like, and includes an IC chip including a CPU, an antenna that communicates with an external device, and communication means such as a contact terminal. It is a small-sized information processing terminal such as a portable type or an attached type that performs communication with an external device by contact.
The communication speed of the IC card is included in an ATR (Answer To Reset) transmitted from the IC card after transmitting a reset signal from the card terminal, which is an external device, to the IC card. If not included, a communication speed of 9600 bps is generally used at an external clock frequency of 3.57 MHz which is a default value (initial setting value).
Further, an IC chip that can use a communication speed higher than 9600 bps has appeared. For example, EMV2000, which is often used as a credit card specification, recommends an IC card capable of realizing communication speeds of 9600, 19200, and 38400 bps.
[0003]
As shown in FIG. 6, corresponding to a card terminal supplying an external clock of 1 to 5 MHz, the IC chip of this IC card performs communication control processing and command processing at the same speed as the external clock. The communication control process and the command process are processes in which the CPU process is distinguished according to the processing content. The communication control process is a process in which the CPU inputs and outputs data to and from an I / O interface that mediates communication between the card terminal and the CPU. This is a process of controlling communication with the card terminal such as performing control. On the other hand, the command process is a request process for performing a process according to a command such as an operation, reading or writing from a memory, authentication, and the like, and generating a response.
[0004]
The communication speed of the IC card according to ISO / IEC7816-3, which is an international standard for the IC card, is determined as shown in FIG. 7 by the parameter FI / DI of the ATR transmitted from the IC card to the card terminal after reset. In recent credit card requirement specifications (eg, EMV2000), FI / DI = 11, 12, 13 is recommended, and in a mobile phone card (eg, 3GPP standard), FI / DI = 1,94,95. Recommended. FI indicates the frequency band of the external clock supplied from the external terminal to the IC card, which the IC card requests from the external terminal. For example, if FI = 1, the IC card requests the external terminal to supply an external clock within the frequency band of 1 to 5 MHz, and if FI = 3, the external clock within the frequency band of 1 to 8 MHz.
[0005]
The IC card that realizes the communication functions of FI / DI = 11, 12, and 13 achieves communication speeds of 9600, 19200, and 38400 bps when the frequency of the external clock is 3.57 MHz in accordance with each FI / DI parameter. Communication module. Since the communication control process is performed using the external clock as a reference for the speed, the communication speed is proportional to the frequency of the external clock.
[0006]
As shown in FIG. 8, a communication module for realizing the communication function of FI / DI = 11, 12, 13 described above is provided. When the frequency of the external clock is 3.57 MHz, the internal clock having a frequency of 7.14 MHz is provided. An IC card provided with a newly developed IC chip and having a processing speed twice that of the above-described conventional IC chip (hereinafter, this IC card is referred to as a "double speed IC card"). It is possible to perform communication (19200, 38400, 76800 bps) and command processing at twice the speed as compared with the aforementioned IC card. Note that the external clock is an operation reference signal which is a clock component extracted from an electromagnetic wave received from the card terminal, and the internal clock is an internal operation clock applied to the CPU.
[0007]
[Problems to be solved by the invention]
However, as shown in FIG. 8, when the frequency of the external clock is 3.57 MHz, the double-speed IC card cannot perform communication at a communication speed of 9600 bps, and in order to realize this communication, for example, Modifications were made to the software of the communication module that realizes the communication functions of FI / DI = 11, 12, and 13, such as adding a routine to enable communication of 4800 bps at 3.57 MHz (9600 bps at 7.14 MHz). In addition, a new communication module must be developed, stored in the ROM, and a new IC card must be reproduced and reissued.
[0008]
On the other hand, even with an IC chip that performs processing at twice the processing speed, if communication processing and command processing are performed in synchronization with an external clock, the processing speed of the IC chip depends on the performance of the card terminal. Although the processing speed of the chip has increased, there has been a problem that the user cannot enjoy the benefits. That is, when connected to a card terminal that supplies an external clock of 1 to 5 MHz, processing is performed with an internal clock of 1 to 5 MHz which is the same as the processing speed of a conventional IC chip.
[0009]
An object of the present invention is to provide an IC module, an IC card, and a program for an IC module, which can reduce a burden associated with an increase in processing speed of an IC chip and can provide a benefit associated with an increase in processing speed. That is.
[0010]
[Means for Solving the Problems]
The present invention solves the above problem by the following means. In addition, in order to facilitate understanding, the description will be given with reference numerals corresponding to the embodiment of the present invention, but the present invention is not limited to this. That is, according to the first aspect of the present invention, a reception control processing means (142) for performing reception control processing for controlling the reception of a processing request from an external device, and a processing corresponding to the processing request received by the reception control processing means. Request processing means (141) for performing request processing for generating a response, and transmission control processing means (142) for performing transmission control processing for controlling transmission of the response generated by the request processing means to the external device. Wherein the request processing means performs request processing at a different processing speed from the reception control processing means and / or the transmission control processing means. It is.
[0011]
The invention according to claim 2 is the IC module according to claim 1, further comprising an internal operation reference signal generating means (133) for generating an internal operation reference signal based on an operation reference signal supplied from the external device, The reception control processing means and / or the transmission control processing means performs reception control processing and / or transmission control processing in accordance with the operation reference signal, and the request processing means is generated by the internal operation reference signal generation means IC modules (11, 12) characterized in that request processing is performed in accordance with an internal operation reference signal.
[0012]
According to a third aspect of the present invention, in the IC module according to the second aspect, it is determined whether or not the request processing unit should perform processing in accordance with the operation reference signal based on a communication setting with the external device. An IC module comprising: a reference signal determining unit (143); wherein the request processing unit performs processing in accordance with the internal operation reference signal when the reference signal determining unit determines that the request is not acceptable. 11, 12).
[0013]
According to a fourth aspect of the present invention, in the IC module according to the third aspect, there is provided an operation reference information storage unit (17) for storing operation reference information which is information relating to the processing of the request processing unit, and the reference signal determination unit. Makes a determination when the operation reference information stored in the operation reference information storage means indicates that processing should be performed in accordance with the internal operation reference signal, and the request processing means An IC module (11, 12) characterized in that when information indicates that processing should be performed in accordance with the operation reference signal, processing is performed in accordance with the operation reference signal.
[0014]
According to a fifth aspect of the present invention, in the IC module according to any one of the second to fourth aspects, the internal operation reference signal generation means determines a frequency of the operation reference signal as a processing capability of the request processing means. Wherein the internal operation reference signal is generated by increasing the frequency to an IC module (11, 12).
[0015]
According to a sixth aspect of the present invention, there is provided an IC card (10) including the IC module (11, 12) according to any one of the first to fifth aspects and a card base (101).
[0016]
The invention according to claim 7 is a reception control processing procedure (S210) for performing reception control processing for controlling the reception of a processing request from an external device, and performing processing in accordance with the processing request received in the reception control processing procedure. A request processing procedure (S240) for performing a request processing for generating a request, and a transmission control processing procedure (S270, S290) for performing a transmission control processing for controlling transmission of a response generated in the request processing procedure to the external device. An IC module program to be executed by a CPU (14) of a module (11, 12), wherein the request processing procedure performs request processing at a different processing speed from the reception control processing procedure and the transmission control processing procedure. , Which is a program of an IC module.
[0017]
According to an eighth aspect of the present invention, there is provided the program for an IC module according to the seventh aspect, further comprising an internal operation reference signal generating procedure (S230) for generating an internal operation reference signal based on an operation reference signal supplied from the external device. The reception control processing procedure and / or the transmission control processing procedure perform reception control processing and / or transmission control processing in accordance with the operation reference signal, and the request processing procedure is generated in the internal operation reference signal generation procedure. Request processing in accordance with an internal operation reference signal to be executed.
[0018]
According to a ninth aspect of the present invention, in the program of the IC module according to the eighth aspect, it is determined whether or not to perform processing in accordance with the operation reference signal in the request processing procedure based on a communication setting with the external device. A reference signal determination step (S220) for determining, wherein the request processing step performs processing in accordance with the internal operation reference signal when the determination in the reference signal determination step is negative. This is a module program.
[0019]
According to a tenth aspect of the present invention, in the IC module program according to the ninth aspect, in the reference signal determination step, the operation reference information stored in advance should be processed in accordance with the internal operation reference signal. In the case of indicating, performing the determination, the request processing procedure, when the operation reference information indicates that processing should be performed in accordance with the operation reference signal, performing the processing in accordance with the operation reference signal , Which is a program of an IC module.
[0020]
According to an eleventh aspect of the present invention, in the program for an IC module according to any one of the eighth to tenth aspects, the internal operation reference signal generating step includes the step of setting the frequency of the operation reference signal to an IC chip. And generating the internal operation reference signal by increasing the frequency to a predetermined frequency corresponding to the processing capability of the IC module.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings and the like.
(Embodiment)
FIG. 1 is a block diagram showing an embodiment of an IC module and an IC card according to the present invention. Note that the IC modules in the present embodiment are the antenna 11 and the IC chip 12.
As shown in FIG. 1, an IC card 10 is a non-contact type IC having an antenna 11 and an IC chip 12 mounted on a card base 101 and performing electromagnetic induction communication with a card terminal 20 via an electromagnetic wave. Card.
The card substrate 101 is, for example, a film substrate serving as a basis for a card shape such as vinyl chloride, polyimide, polycarbonate, ABS, polypropylene, and polyethylene. The antenna 11 is a wound coil or the like, and performs mutual conversion between AC electromagnetic waves and AC power by an electromagnetic induction method, and a reader / writer (hereinafter, “reader / writer” is referred to as “R / W”) 21 of the card terminal 20. And mediates communication between the IC chip 12.
[0022]
The IC chip 12 includes a CPU 14, an I / O interface 13 connected to the CPU 14, a RAM 15, a ROM 16, an EEPROM 17, and the like.
The I / O interface 13 is an input interface that extracts a power component, a clock component (external clock), and a data component from AC power input via the antenna 11 and inputs the extracted components to the CPU 14. An output interface that performs load modulation and the like according to data output from the CPU 14 and outputs the result to the antenna 11. Further, the I / O interface 13 includes a clock generation unit 131.
[0023]
The clock generation unit 131 includes an external clock extraction unit 132 and an internal operation reference signal generation unit 133, extracts a clock component from AC power input from the antenna 11, and generates a clock pulse to generate an internal clock to be applied to the CPU 14. It is a generation circuit.
The external clock extraction unit 132 extracts an external clock (operation reference signal) from the AC power input from the antenna 11, and the internal operation reference signal generation unit 133 modulates the frequency of the external clock using an oscillation circuit or the like. Generate an internal reference signal whose frequency is twice as high (for example, when the frequency of the external clock is 3.57 MHz, the frequency of the internal reference signal is twice as high as 7.14 MHz).
The clock generator 131 inputs either an external clock or an internal reference signal to the CPU 14 as an internal clock under the control of the CPU 14.
[0024]
The RAM 15, the ROM 16, and the EEPROM 17 are storage means for storing information necessary for the processing of the CPU 14, such as programs.
The RAM 15 is a volatile memory and is used as a work area where the CPU 14 performs processing. Further, a double speed setting flag indicating that the CPU 14 performs command processing in the double speed mode in synchronization with the internal operation reference signal is set in the RAM 15. The ROM 16 is a non-volatile read-only memory, and stores an operating system (hereinafter referred to as “OS”) as basic software, programs such as an execution environment, parameters, and the like.
[0025]
The EEPROM 17 is a non-volatile memory that can be rewritten at any time, and is usually used as a work area, a program area, and the like for a user. Further, the EEPROM 17 stores IC chip type information indicating that the IC card 10 includes the IC chip 12 capable of performing processing in the normal speed mode and the double speed mode. The IC chip type information is operation reference information, and is information relating to processing of the CPU 14, such as information indicating what internal clock the CPU 14 performs processing in synchronization with.
[0026]
The CPU 14 is a central processing unit that integrally controls the IC card 10, and executes a program stored in a memory such as the ROM 15 and the EEPROM 17 to execute a command processing unit 141, a communication control processing unit 142, and a reference signal determination unit. The unit 143 is realized. Details of these components will be described later with reference to FIGS. The CPU 14 can execute the processing in any one of the 1 × speed mode and the 2 × speed mode having different processing speeds by performing the process in synchronization with the internal clock input from the clock generation unit 131. Specifically, the CPU 14 performs processing in the same speed mode in synchronization with an external clock when performing communication control processing, and performs double speed processing in synchronization with the internal operation reference signal when performing command processing. Process in mode.
[0027]
FIG. 2 is a table showing specifications of the IC module and the IC card according to the present invention. As shown in FIG. 2, the IC card 10 supplies an external clock of 1 to 5 MHz and communicates at a communication speed FI / DI = 11, 12, 13 (hereinafter, this card terminal is referred to as a “conventional type”). Or a card terminal which supplies an external clock of 1 to 8 MHz and performs communication at a communication speed FI / DI = 32, 33 (hereinafter, this card terminal is referred to as a "new card terminal"). It is used by being connected to.
When the IC card 10 is connected to a new card terminal, the command processing unit 141 and the communication control processing unit 142 of the IC card 10 are synchronized with an external clock of a frequency of 1 to 8 MHz supplied from the card terminal. Command processing and communication control processing are performed in the double speed mode. On the other hand, when connected to a conventional card terminal, the command processing unit 141 performs command processing in the double speed mode, and the communication control processing unit 142 performs communication control processing in the normal speed mode.
[0028]
FIG. 3 is a flowchart showing the operation of the IC module and the IC card according to the present invention and the program of the IC module according to the present invention, and shows from reset to initial setting after ATR transmission.
In step 100 (hereinafter, "step" is referred to as "S"), the IC card 10 is loaded into the card terminal 20, receives power and an external clock, receives a reset signal, and sets the CPU 14 to the normal speed mode. Start by setting.
In S110, the communication control processing unit 142 performs the communication control processing in the 1 × speed mode, whereby the IC card 10 transmits the ATR, and the CPU 14 reads the IC chip type information set at the time of issuing the card from the EEPROM 17. It is determined whether or not the IC chip can perform processing in the double speed mode (S120). If no, the initial setting is terminated (S170) with the setting of the same speed mode (S130).
[0029]
Since the IC chip type information indicating that the IC chip 12 capable of performing the processing in the normal speed mode and the double speed mode is provided is stored in the EEPROM 17 of the IC card 10, the CPU 14 determines in S120 that the result is affirmative. , To S140.
In S140, the reference signal determination unit 143 of the CPU 14 checks the value of the FI of the ATR setting, and determines whether the frequency band of the external clock supplied from the card terminal 20 is 1 to 5 MHz or 1 to 8 MHz. Is determined (S150). When the frequency is 1 to 8 MHz (in the case of a new card terminal), the initial setting is ended (S170) with the setting of the same speed mode (S130). When the frequency is 1 to 5 MHz (in the case of a conventional card terminal), the CPU 14 can perform double speed operation as the capability of the IC card 10, so the CPU 14 sets a double speed setting flag in the RAM 15 (later, Preparation for shifting to the CPU 2 × speed) is performed, and the IC card 10 ends the initial setting (S170).
[0030]
FIG. 4 is a flowchart showing the operation of the IC module and the IC card according to the present invention and the program of the IC module according to the present invention, and shows the operation of the IC card after the initialization is completed.
In S200, the IC card 10 is in a state where the initial settings have been completed (from S100 to S170 in FIG. 3), and the CPU 14 is in the single speed mode.
When a command is received from the card terminal 20 (S210), the reference signal determination unit 143 determines whether or not the double speed setting flag is set in the RAM 15 (S220). Transition is made (S230). Thereafter, the command processing unit performs the command processing in the double speed mode (S240). However, when the 2 × speed setting flag is not set, the command processing section 141 performs command processing in synchronization with the external clock (1 to 8 MHz) in the 1 × speed mode (S240).
[0031]
If the time required for the command processing of the CPU 14 exceeds the time obtained based on the value declared in the ATR (if not declared, the default value described in ISO / IEC87816-3) (S250), the IC card 10 , A processing time extension request is made to the card terminal 20. In this case, since I / O to the card terminal 20 occurs, the CPU 14 transits to the normal speed mode (S280), and transmits and receives a character indicating an extension of the processing time under the control of the communication control processing unit 142 (S290). . Thereafter, the process proceeds to S220, and the IC card 10 repeats the same processing (from S230 to S250). Upon completion of the command processing, the CPU 14 shifts to the single speed mode (S260), transmits response data under the control of the communication control processing unit 142 (S270), and the IC card 10 ends the processing (S300).
Although the processing related to the command received in S210 ends here, it is general for a normal IC card to wait for command reception, that is, return to the start state (S200).
[0032]
FIG. 5 is a table for explaining the processing capability of the IC chips provided in the IC card according to the present invention. Each IC chip has a communication module capable of performing communication of FI / DI = 11, 12, and 13; Shows the processing capability when a 3.57 MHz external clock is supplied from a type card terminal. Note that the IC chip (# 3) of “double the performance” indicates the IC chip 12 mounted on the IC card 10. The processing capability in command processing and communication control processing (command reception control processing and response transmission control processing) when the conventional IC chip (# 1) that performs processing at the same speed as the external clock performs processing is set to 1. The processing capacity in the communication control processing is the communication speed (bps), and the processing capacity in the command processing is the frequency of the internal clock to be synchronized.
[0033]
When the frequency of the external clock is 3.57 MHz, the IC chip (# 2) having the compatible operation fixed performs processing in synchronization with the internal clock having the frequency of 3.57 MHz or 7.14 MHz. This is an IC chip that performs processing at the same or twice the processing speed as in 1) (one of the two processing speed modes), and performs command processing in accordance with the processing speed in the communication control processing. That is, the IC chip (# 2) does not switch the processing speed mode in the communication control processing and the command processing, and is the same IC chip with the same internal clock frequency. The IC chip (# 2) performs communication control processing in synchronization with an internal clock having a frequency of 3.57 MHz, which can perform communication with a conventional card terminal (see FIG. 8). Therefore, as shown in FIG. 5, the processing capabilities of the command processing and the communication control processing are the same as those of the conventional IC chip (# 1).
[0034]
The IC chip (# 4), which has a fixed performance of 2x, can communicate at 4800 bps at 3.57 MHz (9600 bps at 7.14 MHz) to the software of the communication module that realizes the communication functions of FI / DI = 11, 12, and 13. A newly developed communication module is added with a modification such as adding a routine for performing the following processing. When the frequency of the external clock is 3.57 MHz, the processing is performed in synchronization with the internal clock of the frequency of 7.14 MHz. It is an IC chip. The IC chip (# 4) with a fixed performance of 2 times performs processing in synchronization with the internal clock of 7.14 MHz, but its communication speed is one time faster than the other IC chips (# 1, # 2, # 3). Therefore, the processing capacity in the communication control processing is the same as that of the conventional IC chip (# 1), and the processing capacity in the command processing is doubled. That is, since the communication speed with the card terminal is determined by the standard, the performance can not be improved only with a margin for the CPU.
[0035]
The double performance IC chip (# 3) uses the communication module in the single speed mode at the time of communication control processing of command reception and response transmission, and performs processing in the double speed mode at the time of command processing. The processing capacity is the same as that of the conventional IC chip (# 1), and the processing capacity in command processing is doubled.
[0036]
According to the present embodiment, the communication control processing unit 142 that controls I / O that is exchanged with the card terminal performs communication control processing in synchronization with an external clock using a conventional communication module, and performs communication control such as ISO. The command processing unit 141, which performs command processing with no processing time restriction according to the standard, performs command processing at twice the speed as compared with the communication control processing in synchronization with the internal operation reference signal. Even if it becomes, the communication module is newly developed (tested and created) and stored in the ROM 16 to reproduce and reissue a new IC card. Communication with a conventional terminal has become possible within a predetermined communication speed range. Further, when processing a received command, it is possible to use the maximum performance of the IC chip 12, shorten the processing time, and provide benefits associated with an increase in the processing speed of the IC chip 12. It became.
[0037]
(Modified form)
Various modifications and changes are possible without being limited to the embodiment described above, and these are also within the equivalent scope of the present invention. For example, the IC card 10 is not limited to a non-contact type IC card, but may be a contact type or a contact type / non-contact type IC card. Further, the IC card 10 is not limited to an IC card that communicates with the card terminal 20 by an electromagnetic induction method, and may be an IC card that communicates by an electrostatic coupling method, and the communication method is not limited.
[0038]
Although the IC card 10 according to the present invention has been described as an example of the IC module, the IC card, and the program of the IC module, the present invention is not limited to this, and communication with an external device such as an IC tag is standardized. The same effect can be obtained even in a device provided with another IC module to receive the same.
[0039]
As shown in FIG. 4, the IC card 10 transmits and receives a character indicating an extension of the processing time under the control of the communication control processing unit 142 (S290), proceeds to S220, and repeats the same processing (S230 to S250). After checking the previous state (the state before switching to the single speed mode in S280), the state returns to the state (double speed mode in the case of the IC card 10), and the same processing is repeated from S240. Good (from S240 to S250).
[0040]
The IC chip 12 switches the processing speed by switching the frequency of the internal clock supplied to the CPU 14 by the clock generation unit 131 to 1 or 2 times. However, the present invention is not limited to this. For example, the operation state of the CPU 14 is changed. The processing speed may be switched by switching to ２, and enabling the calculation to be doubled by operation with the internal clock of 3.5 MHz. The operation state indicates, for example, that if there are a CPU that performs addition in four states and a CPU that performs addition in two states, the CPU that performs addition in two states has twice the processing capacity. Normally, one state is one clock cycle ( If it is 3.57 MHz, it is about 0.285 μsec.).
[0041]
The IC chip 12 performs processing in the normal speed mode or the double speed mode, but is not limited to this. For example, in the case of an IC chip having a processing speed of 1.5 times, 3 times, and 4 times as compared with the related art, May be performed at a processing speed, such as 1.5 times, 3 times, or 4 times, according to the processing capability of the IC chip. In this case, the internal operation reference signal generator 133 generates an internal clock that matches the processing speed.
[0042]
【The invention's effect】
As described above in detail, according to the present invention, since the reception control processing and the transmission control processing and the request processing are performed at different processing speeds, the processing speed of the IC chip is increased, such as the burden of developing a new communication module. In addition to reducing the burden associated with the development, it has become possible to provide benefits associated with an increase in processing speed such as a reduction in processing time.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of an IC module and an IC card according to the present invention.
FIG. 2 is a table showing specifications of an IC module and an IC card according to the present invention.
FIG. 3 is a flowchart showing an operation of the IC module and the IC card according to the present invention and a program of the IC module according to the present invention;
FIG. 4 is a flowchart showing an operation of the IC module and the IC card according to the present invention and a program of the IC module according to the present invention;
FIG. 5 is a table illustrating a processing capability of an IC chip included in an IC card according to the present invention.
FIG. 6 is a table for explaining the processing speed of a conventional IC card.
FIG. 7 is a table showing the communication speed of an IC card according to ISO / IEC7816-3, which is an international standard for IC cards.
FIG. 8 is a table illustrating a communication speed of an IC card including a newly developed IC chip.
[Explanation of symbols]
10 IC card
11 Antenna
12 IC chip
13 I / O interface
14 CPU
15 RAM
16 ROM
17 EEPROM
20 IC card terminals
101 Card base material
131 clock generator
132 External clock extractor
133 Internal operation reference signal generator
141 Command processing unit
142 communication control processing unit
143 Reference signal judgment unit

Claims (11)

Reception control processing means for performing reception control processing for controlling reception of a processing request from an external device,
Request processing means for performing processing in accordance with the processing request received by the reception control processing means, and performing request processing for generating a response;
An IC module comprising: a transmission control processing unit that performs transmission control processing for controlling transmission of a response generated by the request processing unit to the external device;
The request processing unit performs request processing at a different processing speed from the reception control processing unit and / or the transmission control processing unit;
An IC module characterized by the above-mentioned. The IC module according to claim 1,
An internal operation reference signal generation unit that generates an internal operation reference signal based on an operation reference signal supplied from the external device,
The reception control processing means and / or the transmission control processing means performs reception control processing and / or transmission control processing in accordance with the operation reference signal,
The request processing unit performs request processing in accordance with an internal operation reference signal generated by the internal operation reference signal generation unit;
An IC module characterized by the above-mentioned. The IC module according to claim 2,
Based on communication settings with the external device, the request processing unit includes a reference signal determination unit that determines whether to perform processing in accordance with the operation reference signal,
The request processing means, when determined by the reference signal determination means is not, to perform processing in accordance with the internal operation reference signal,
An IC module characterized by the above-mentioned. The IC module according to claim 3,
An operation reference information storage unit that stores operation reference information that is information related to the processing of the request processing unit,
The reference signal determination unit, when the operation reference information stored in the operation reference information storage unit indicates that processing should be performed in accordance with the internal operation reference signal, performs a determination,
The request processing means, when the operation reference information indicates that processing should be performed in accordance with the operation reference signal, performing processing in accordance with the operation reference signal,
An IC module characterized by the above-mentioned. The IC module according to any one of claims 2 to 4,
The internal operation reference signal generation unit generates the internal operation reference signal by increasing the frequency of the operation reference signal to a frequency corresponding to the processing capability of the request processing unit,
An IC module characterized by the above-mentioned. An IC module according to any one of claims 1 to 5,
Card base material,
An IC card comprising: A reception control processing procedure for performing reception control processing for controlling reception of a processing request from an external device,
A request processing step of performing a processing corresponding to the processing request received in the reception control processing procedure, and performing a request processing of generating a response;
A transmission control processing procedure for performing transmission control processing for controlling transmission of the response generated in the request processing procedure to the external device, and a program of the IC module for causing the CPU of the IC module to execute the transmission control processing procedure.
The request processing procedure performs request processing at a different processing speed from the reception control processing procedure and the transmission control processing procedure,
A program for an IC module, characterized in that: The program for an IC module according to claim 7,
An internal operation reference signal generation procedure for generating an internal operation reference signal based on an operation reference signal supplied from the external device,
The reception control processing procedure and / or the transmission control processing procedure performs reception control processing and / or transmission control processing in accordance with the operation reference signal,
The request processing step performs request processing in accordance with the internal operation reference signal generated in the internal operation reference signal generation step,
A program for an IC module, characterized in that: The program for an IC module according to claim 8,
A reference signal determination step of determining whether to perform processing in accordance with the operation reference signal in the request processing step based on a communication setting with the external device,
The request processing procedure, when it is determined to be no in the reference signal determination procedure, to perform processing in accordance with the internal operation reference signal,
A program for an IC module, characterized in that: 10. The program for an IC module according to claim 9, wherein the reference signal determination step is performed when the operation reference information stored in advance indicates that processing should be performed in accordance with the internal operation reference signal. Do
The request processing procedure, when the operation reference information indicates that processing should be performed in accordance with the operation reference signal, performing processing in accordance with the operation reference signal,
A program for an IC module, characterized in that: The program for an IC module according to any one of claims 8 to 10, wherein
The internal operation reference signal generating step includes generating the internal operation reference signal by increasing a frequency of the operation reference signal to a predetermined frequency according to a processing capability of an IC chip;
A program for an IC module, characterized in that:

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