JP2008102863A - Ic chip, ic card, ic card terminal system and ic chip program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IC chip capable of efficiently and rapidly executing an instruction of high priority, an IC card, an IC card terminal system, and an IC chip program. <P>SOLUTION: The IC chip 16 includes a priority storage means 15 preliminarily storing priorities of a plurality of instructions, a priority selection means 30 selecting one of the plurality of instructions to be executed based on the priority of each instruction, and an instruction execution means 40 executing the instruction selected by the priority selection means 30. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an IC chip, an IC card, an IC card terminal system, and an IC chip program for executing an input command.

In recent years, the spread of IC cards has been progressing mainly in the fields of finance, communication, transportation, etc., and accordingly, there is an increasing demand for speeding up processing of IC card tasks and commands (for example, Patent Document 1). ). In order to efficiently perform a plurality of tasks (processes) included in the received command (instruction), the IC card of Patent Document 1 gives priority to each task and increases the efficiency and speed of the entire IC card process. We are trying to make it.
Such IC cards are roughly classified into contact type IC cards that are inserted into a terminal and transmit / receive commands and tasks, and non-contact type IC cards that transmit and receive commands and tasks in a contactless manner over a terminal such as a reader / writer. , It was used properly according to the service content.

  In recent years, a settlement service using a portable IC card terminal having a communication function has been proposed and put into practical use. An IC card required for such a terminal requires both a contact IC card function for a communication service and a non-contact IC card function for a settlement service (multi-application platform). Therefore, the IC card is provided with at least a contact type / non-contact type I / O port, and a plurality of commands (commands) received from these I / O ports can be quickly processed. It is requested.

  In general, an OS (operating system) of an IC card that employs a multi-application platform is a sequential execution type for commands. Therefore, an IC card having a plurality of I / O ports executes a plurality of input commands (instructions) in the order of input, and executes a command (instruction) received from a certain I / O port. During this time, commands received from other I / O ports could not be executed.

An example of a portable communication terminal having an I / O port for receiving payment commands such as shopping fee payment and an I / O port for receiving e-mail communication commands will be described. If you try to make a payment for a product while executing a communication command, as mentioned above, the payment command will not be executed until the communication service command is completed. Has occurred. Thus, command processing scheduling is very important when there are restrictions on command processing.
The IC card of Patent Document 1 described above only efficiently executes a plurality of tasks (processes) included in the command, and the command itself when there are a plurality of I / O ports as described above. No measures have been taken to improve the efficiency of the process.
JP 2006-127361 A

  An object of the present invention is to provide an IC chip, an IC card, an IC card terminal system, and an IC chip program that can execute instructions with high priority efficiently and quickly.

The present invention solves the above problems by the following means. For ease of understanding, the reference numerals corresponding to the embodiments of the present invention will be described in parentheses, but the present invention is not limited thereto.
The invention of claim 1 is selected by priority selection means (30) for selecting which of a plurality of instructions to execute based on the priority of each instruction, and the priority selection means (30). The IC chip (16) includes instruction execution means (40) for executing the received instructions.
The invention of claim 2 is the IC chip (16) according to claim 1, further comprising priority storage means (15) for storing the priorities of the plurality of instructions in advance. It is.
According to a third aspect of the present invention, in the IC chip according to the second aspect, the priority storage means (15) is capable of adding and changing priorities.
According to a fourth aspect of the present invention, in the IC chip (16) according to any one of the first to third aspects, the execution state of the instruction selected based on the priority selection means (30) is managed. The IC chip (16) is provided with an execution management means (41) for performing the above.
The invention of claim 5 is the IC chip (16) according to any one of claims 1 to 4, wherein a plurality of instruction input means (12) for inputting a plurality of instructions to the IC chip (16). ), And the priority selection means (30) is an IC chip (10) that determines the execution order of a plurality of instructions input by the instruction input means (12).
According to a sixth aspect of the present invention, in the IC chip (16) according to the fifth aspect, the plurality of command input means (12) are contact input means (12-1) for contacting and inputting the command, and The IC chip (16) is non-contact input means (12-2) for inputting the command in a non-contact manner.
The invention according to claim 7 is the IC chip (16) according to claim 5 or 6, further comprising instruction holding means (20) for holding the plurality of instructions input from the instruction input means (12). An IC chip (16) characterized by
According to an eighth aspect of the present invention, in the IC chip (16) according to any one of the fifth to seventh aspects, the instruction execution means (40) is an instruction interruption means (for interrupting an instruction being executed). 42) and an interruption storage means (13) for storing the execution contents of the instruction suspended by the instruction interruption means (42) until the interruption.
According to a ninth aspect of the present invention, in the IC chip (16) according to the eighth aspect, when the instruction execution means (40) receives a new instruction having a high priority during the execution of the instruction, The instruction being executed by the instruction interruption means (42) is interrupted, the execution content until the interruption is saved by the interruption storage means (13), and the new instruction is preferentially executed. IC chip (16).

  The invention of claim 10 is an IC card (10) comprising the IC chip (16) according to any one of claims 1 to 9 and an IC card substrate (17).

  The invention of claim 11 is an IC card comprising the IC card (10) according to claim 10 and a plurality of command issuing means (104) for issuing the plurality of commands and outputting to the IC card (10). Terminal system.

The invention according to claim 12 is the priority selection means (S203) for selecting which of the plurality of instructions to be executed by the IC chip (16) based on the priority of each instruction, and the priority selection This is an IC chip program that functions as instruction execution means (205) for executing the instruction selected by the means (S203).
A thirteenth aspect of the present invention is the IC chip program according to the twelfth aspect, further comprising priority storage means for storing the priorities of the plurality of instructions in advance.
The invention of claim 14 is the IC chip program according to claim 13, wherein the priority storage means can add and change priorities.
According to a fifteenth aspect of the present invention, in the IC chip program according to any one of the twelfth to fourteenth aspects, the execution state of the instruction selected based on the priority selection means (S203) is managed. An IC chip program comprising execution management means (S204).
A sixteenth aspect of the present invention is the IC chip program according to any one of the twelfth to fifteenth aspects, wherein a plurality of instructions input means (S201) for inputting a plurality of instructions to the IC chip (16). The priority selection means (S203) is an IC chip program that determines the execution order of a plurality of instructions input by the instruction input means (S201).
According to a seventeenth aspect of the present invention, in the IC chip program according to the sixteenth aspect, the plurality of command input units (S201) are configured to input the command through a contact terminal, An IC chip program comprising non-contact input means for inputting by contact.
The invention of claim 18 is the IC chip program according to claim 16 or claim 17, further comprising instruction holding means (S202) for holding the plurality of instructions input from the instruction input means (S201). This is a program for an IC chip.
According to a nineteenth aspect of the present invention, in the IC chip program according to the eighteenth or eighteenth aspect, the instruction execution means (S205) includes an instruction interruption means (S207) for interrupting an instruction being executed, and the instruction interruption. An IC chip program comprising interruption storage means (S207) for saving the execution contents of the instruction suspended by means (S207) until interruption.
According to a twentieth aspect of the invention, in the IC chip program according to the nineteenth aspect, the instruction execution means (S205) is configured to execute the instruction when a new instruction with a high priority is input during the execution of the instruction. The instruction being executed by the instruction interruption means (S207) is interrupted, the execution contents until the interruption is saved by the interruption storage means (S207), and the new instruction is executed preferentially (S205). An IC chip program characterized by the above.

The present invention has the following effects.
(1) Since a plurality of instructions are selected based on the priority, and the selected instruction is executed, the instructions can be processed efficiently and quickly.
(2) Since the priorities of a plurality of instructions are stored in advance, instructions can be efficiently selected based on the stored priorities.
(3) Since priority can be added and changed, the priority of a new instruction can be added or the priority of an instruction can be changed.
(4) Since the execution of the instruction selected based on the priority selection means is managed, it is possible to easily grasp the processing waiting order of each instruction and the execution state of the instruction.

(5) Since a plurality of instructions are input from the outside and the execution order of the input plurality of instructions is determined, the instructions can be executed efficiently and quickly according to the priority.
(6) Since a plurality of commands are input in a contact and non-contact manner, the commands can be input by various methods.
(7) Since a plurality of input instructions are held, it is possible to manage instructions before execution, and prevent execution failures such as instructions not being executed.
(8) Since the instruction being executed is interrupted and the execution content of the instruction until the interruption is saved, the interrupted instruction can be executed again from the point of interruption.
(9) When a new instruction with a high priority is input during execution of the instruction, the instruction being executed is interrupted, the contents of execution until the interruption is saved, and the new instruction is given priority. Since the instruction is executed, it is possible to always execute the instruction having a high priority with the highest priority, and it is possible to execute the interrupted instruction from the point of interruption after the execution of the new instruction.

(10) Since the IC card includes an IC chip and an IC card base, the range of use of the IC chip can be expanded, for example, by being mounted on a wide variety of terminals and devices.
(11) Since the IC card system includes an IC card and a plurality of command issuing means for issuing a plurality of instructions and outputting them to the IC card, the plurality of instructions output from the instruction issuing means to the IC card. Instructions can be executed with priority.

  An object of the present invention is to provide an IC chip, an IC card, an IC card terminal system, and an IC chip program capable of efficiently and quickly executing high priority instructions. This is realized by providing priority selection means for selecting and instruction execution means for executing the selected instruction in the IC chip.

Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.
FIG. 1 is a diagram showing a first embodiment of an IC card terminal system according to the present invention. FIG. 2 is a diagram illustrating an operation flow of the IC card attached to the mobile communication terminal.

As shown in FIG. 1, an IC card 10 used in the IC card terminal system of this embodiment includes a CPU 11, an I / O port 12, a RAM 13, a ROM 14, an EEPROM 15, an instruction holding unit 20, a priority selection unit 30, and an instruction execution. The IC chip 16 having the portion 40 is provided in the IC card base 17. The IC card 10 is attached to the mobile communication terminal 100 and used to use a communication function such as a telephone provided in the mobile communication terminal 100 and an electronic money system. Specifically, the authentication command is executed by the IC card 10 to confirm whether or not the communication function of the mobile communication terminal 100 can be used, and the payment command is executed to execute the payment of the electronic money system. You can do it. Each command (instruction) includes a plurality of tasks (processes). For example, the authentication command includes tasks such as reading authentication data and checking.
The CPU 11 is a control circuit unit that performs overall control of each unit of the IC card 10.
The I / O port 12 is an input / output unit that inputs a plurality of commands from the mobile communication terminal 100 and outputs the execution result of each command to the mobile communication terminal 100. / O port (contact input means) 12-1 and I / O port (non-contact input means) 12-2 for input / output without contact. In this embodiment, an authentication command issued from a contact-type command communication unit 102, which will be described later, is sent to the I / O port 12-1 via the terminal I / O port 104-1, or to a non-contact-type command communication unit. A settlement command issued from the terminal 103 is input to the I / O port 12-2 via the terminal I / O port 104-2.

The RAM 13 is a volatile memory used as a work area for processing of the CPU 11, and stores the contents of interrupted instructions interrupted by an instruction execution unit 40 described later.
The ROM 14 is a read-only nonvolatile memory in which basic software such as an OS (operating system) of the IC card 10 is installed. In this embodiment, not only the OS but also an application A that executes an authentication command and an application B that executes a settlement command are installed.
The EEPROM 15 is a rewritable nonvolatile memory, and stores a command of the instruction holding unit 20 and a priority list of the priority selection unit 30 described later.

The instruction holding unit 20 is a circuit that holds and manages a plurality of commands input from the mobile communication terminal 100 through the I / O port 12-1 and the I / O port 12-2. The data is stored in the EEPROM 15 via the CPU 11 (command holding means).
The priority selection unit 30 is a circuit that selects a command to be executed based on the priority list managed by the instruction holding unit 20. The priority list is used to determine the priority of the command to be used in advance and is stored in the EEPROM 15 (priority storage means), for example, a list as shown in Table 1. Further, in this embodiment, in order to clarify the explanation, an example of two types of commands, that is, an authentication command and a settlement command will be described, but the present invention is not limited to this. The contents of the priority list can be changed by adding an application or a command. Here, since the payment of the electronic money system should be processed immediately in every scene, as shown in Table 1, the priority of the payment command is set higher than the communication authentication command.

The instruction execution unit 40 includes an execution management unit 41 and an instruction interruption unit 42, and is a circuit that executes the command selected by the priority selection unit 30.
The execution management unit 41 is a circuit that manages the execution status of all commands managed by the instruction holding unit 20, and is managed by an execution management table as shown in Table 2, for example. The execution management table shown in Table 2 includes three items: “execution priority”, “command type”, and “command status”. “Execution priority” of the execution management table indicates an execution order determined based on the priority list of Table 1, and “1” has the highest priority. “Command information” indicates the type (A or B) of the application that executes the command and the command name (authentication command or payment command), and “command status” indicates the command execution status.

  The instruction interruption unit 42 is a circuit that interrupts an instruction being executed in order to execute the new instruction with the highest priority when a new instruction having a high priority is input to the IC card 10 during execution of the instruction. It is. The interrupted instruction is stored in the RAM 13 (interrupt storage means).

The portable communication terminal 100 is a portable IC having a terminal CPU 101, a contact type command communication unit (command issue unit) 102, a non-contact type command communication unit (command issue unit) 103, and a terminal I / O port 104. It is a card terminal.
The terminal CPU 101 is a control circuit that integrally controls each unit of the mobile communication terminal 100.
The contact-type command communication unit 102 is a communication unit that issues an authentication command for confirming the registration ID of the communication function of the mobile communication terminal 100 to the IC card 10. For example, when the communication function of the mobile communication terminal 100 is used, an authentication command is issued, and when the authentication command is executed and confirmed by the IC card 10, the communication function of the mobile communication terminal 100 can be used. .

The non-contact command communication unit 103 sends a payment command used for payment at the time of purchase of a product or the like to I
It is a communication unit issued to the C card 10. The non-contact type command communication unit 103 includes a transmission / reception antenna 103-1 and a reception data processing unit 103-2 for short distance (up to about 1 m), and is contactless by a transmission / reception antenna 103-1 from a reader / writer 110 described later. The payment information including the payment command is received as a radio wave. The received data processing unit 103-2 extracts the payment command from the received radio wave, causes the payment command to be input to the IC card 10 and executed. The settlement command execution result in the IC card 10 is transmitted to the reader / writer 110 via the non-contact command communication unit 103, so that the settlement result can be immediately transmitted.

The terminal I / O port 104 outputs the authentication command of the contact command communication unit 102 to the IC card 10 and the terminal I / O port 104-1 for inputting the execution result of the command, and non-contact command communication. A terminal I / O port 104-2 for outputting the settlement command of the unit 103 to the IC card 10 and inputting the execution result of the command.
The reader / writer 110 is a device that transmits settlement information at the time of product purchase or the like to the non-contact command communication unit 103 by radio waves, and receives a result of settlement processing of the IC card 10 from the non-contact command communication unit 103. . Note that the reader / writer 110 is installed in the accounting of a retail store or the like. When a product or the like is purchased, the settlement command is sent to the IC card 10 by holding the transmission / reception antenna 103-1 of the mobile communication terminal 100 over the reader / writer 110. Can be entered.

Next, the operation of the IC card 10 attached to the mobile communication terminal 100 will be described.
As shown in FIG. 2, the mobile communication terminal 100 uses a contact-type command communication unit to confirm an authentication code recorded on the IC card 10 when a user tries to use a communication function (S200). An authentication command is issued from 102 and output to the IC card 10 via the terminal I / O port 104.
When the authentication command is input to the IC card 10 (S201), the IC card 10 stores the input authentication command in the EEPROM 15 by the command holding unit 20 (S202).
Subsequently, the IC card 10 confirms the priority of the input authentication command based on the priority list of Table 1 (S203), and registers it in the execution management table of the execution management unit 41 as shown in Table 2. (S204). Next, the registered authentication command is executed by the application A installed in the ROM 14 (S205). By executing the authentication command, as shown in Table 3, the “command status” in the execution management table changes from “waiting for execution” to “being executed”.

When a payment command having a higher priority than the authentication command is input from the non-contact command communication unit 103 via the I / O port 12-2 during the execution of the authentication command (S206, Yes), the IC The card 10 interrupts the authentication command being executed, and saves the execution contents up to the interruption in the RAM 13 (S207). Next, as shown in Table 4, the execution management unit 41 changes the “command status” column of the execution management table from “executing” to “execution interrupted”, and the “execution priority” of the authentication command. Is updated to “2”, and a settlement command is newly registered in “1” of “execution priority” (S204).
If the newly input command has a lower priority than the authentication command (S206, No), the authentication command is terminated without being interrupted (S208).

  After updating the execution management table (S204), the IC card 10 executes a settlement command by the application B (S205). By executing the settlement command, the “command state” of the settlement command in Table 4 changes from “Waiting for execution” to “In progress” as shown in Table 5.

  If a new command having a high priority is not input during execution of the settlement command (No in S206) and the execution of the settlement command is completed (S208), the execution management table confirms whether there is a command to be processed next. (S209). When the execution of the payment command is completed, the execution management table deletes the item of the payment command as shown in Table 6, and the interrupted authentication command is displayed at “1” of “execution priority”. Updated to be carried forward.

  As shown in the execution management table of Table 6, since there is a command to be processed next (authentication command for which execution is suspended) (S209, Yes), the execution contents until the authentication command stored in the RAM 13 is suspended are displayed. Based on this, the authentication command is executed again (S205). When there is no new command input (S206, No) and the execution of the authentication command is finished (S208), it is confirmed whether there is a command to be processed next (S209). If there is no command to be processed (S209, No) ), The command processing is terminated (S210).

From the above, the IC card of Example 1 has the following effects.
(1) Since the IC card 10 selects a plurality of commands based on the priority and executes the selected command, the command can be processed efficiently and quickly.
(2) Since the IC card 10 stores the priorities of a plurality of commands as a priority list, the commands can be efficiently selected based on the stored priorities.
(3) Since the IC card 10 can add and change the priority list, the priority of a new command accompanying the addition of an application is added, or the priority of an already registered command is changed. be able to.
(4) Since the IC card 10 manages the execution of the command selected based on the priority in the execution management table, it is possible to easily grasp the processing waiting order of each command and the execution state of the command.
(5) The IC card 10 inputs an authentication command and a settlement command from the outside through the I / O port 12-1 and the I / O port 12-2, and determines the execution order of each command input by the priority selection unit. Therefore, each input command can be executed efficiently and quickly according to the priority.
(6) Since the I / O port 12-1 for inputting an authentication command through a contact terminal and the I / O port 12-2 for inputting a settlement command in a non-contact manner are provided, commands can be commanded in various ways. Can be entered.

(7) Since the IC card 10 holds a plurality of input commands, it can manage instructions before execution, and can prevent execution failures such as instructions not being executed.
(8) Since the authentication command being executed is interrupted and the execution contents of the command until the interruption is saved, the interrupted authentication command can be executed again from the point of interruption.
(9) When a high-priority payment command is input during the execution of the authentication command, the authentication command being executed is interrupted, the execution contents until the interruption are saved, and the payment command is given priority. Since the command is executed, the priority settlement command can always be executed with the highest priority, and after the settlement command is executed, the suspended authentication command can be executed from the point of suspension.
(10) Since the IC card 10 includes the IC chip 16 and the IC card substrate 17, the range of use of the IC chip 16 can be expanded, for example, by being mounted on various terminals and devices.
(11) The mobile communication terminal 100 is a terminal I / O that outputs to the IC card 10 an authentication command and a settlement command issued from the IC card 10, the contact command communication unit 102, and the non-contact command communication unit 103. Therefore, each command output from the I / O port 104 to the IC card 10 can be processed with priority.

FIG. 3 is a diagram showing a second embodiment of an IC card terminal system according to the present invention. In the description of the second embodiment, the same functions as those of the first embodiment described above are denoted by the same reference numerals or unified reference numerals at the end, and repeated descriptions and drawings are appropriately omitted.
The difference between the IC card 10-2 of the second embodiment and the first embodiment is that, instead of the instruction holding unit 20, the priority selection unit 30, and the instruction execution unit 40 of the IC card 10 of the first embodiment, an instruction holding procedure, A program for causing the IC card 10-2 to execute the priority selection procedure and the instruction execution procedure is installed in the ROM 14 and activated by the CPU 11. Therefore, the IC card 10-2 has a configuration in which the instruction holding unit 20, the priority selection unit 30, and the instruction execution unit 40 of the IC card 10 according to the first embodiment are omitted as illustrated in FIG. The operation of the IC card 10-2 is the same as that of the IC card 10 of the first embodiment.

  As described above, in the IC card 10-2 of the second embodiment, the operation for executing the command according to the priority is realized by the program. Therefore, it is not necessary to provide the arithmetic circuit as in the first embodiment, and the program Can be used easily by installing.

(Modification)
As described above, various modifications and changes can be made without being limited to the embodiments described above, and those inventions are also within an equivalent range.
In each embodiment, the contact-type command communication unit 102 receives a settlement command from the reader / writer 110 in a non-contact manner by the transmission / reception antenna 103-1 built in the mobile communication terminal 100 as a non-contact type issuing unit. 10 may be provided with a transmission / reception antenna so that the payment command can be directly received from the reader / writer 110 in a non-contact manner without using the mobile communication terminal 100.

It is a figure which shows Example 1 of the terminal system for IC cards by this invention. It is a figure which shows the operation | movement flow of the IC card with which the portable communication terminal of Example 1 was mounted | worn. It is a figure which shows Example 2 of the terminal system for IC cards by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 IC card 20 Instruction holding part 30 Priority selection means 40 Instruction execution means 41 Execution management part 42 Instruction interruption part

Claims (20)

Priority selection means for selecting which of a plurality of instructions to execute based on the priority of each instruction;
Instruction execution means for executing the instruction selected by the priority selection means;
IC chip comprising: The IC chip according to claim 1,
Comprising priority storage means for storing in advance the priorities of the plurality of instructions;
IC chip characterized by The IC chip according to claim 2, wherein
The priority storage means is capable of adding and changing priorities;
IC chip characterized by In the IC chip according to any one of claims 1 to 3,
Comprising execution management means for managing the execution state of the instruction selected based on the priority selection means;
IC chip characterized by In the IC chip according to any one of claims 1 to 4,
A plurality of command input means for inputting a plurality of commands to the IC chip;
The priority selection means determines an execution order of a plurality of instructions input by the instruction input means;
IC chip characterized by The IC chip according to claim 5,
The plurality of command input means are contact input means for inputting the command via a contact terminal, and non-contact input means for inputting the command in a non-contact manner;
IC chip characterized by In the IC chip according to claim 5 or 6,
Comprising instruction holding means for holding the plurality of instructions input from the instruction input means;
IC chip characterized by In the IC chip according to any one of claims 5 to 7,
The instruction execution means includes instruction interruption means for interrupting an instruction being executed;
An interruption storage means for storing the execution content of the instruction suspended by the instruction interruption means until the interruption;
IC chip characterized by The IC chip according to claim 8, wherein
When a new instruction having a high priority is input during execution of the instruction, the instruction execution means interrupts the instruction being executed by the instruction interruption means, and the execution contents until the interruption are Preserving in the interrupt storage means and preferentially executing the new instruction;
IC chip characterized by The IC chip according to any one of claims 1 to 9,
An IC card substrate;
IC card equipped with. An IC card according to claim 10;
A plurality of command issuing means for issuing the plurality of commands and outputting to the IC card;
An IC card terminal system comprising: Priority selection means for selecting which of the plurality of instructions is to be executed by the IC chip based on the priority of each instruction;
Instruction execution means for executing the instruction selected by the priority selection means;
IC chip program to function as In the IC chip program according to claim 12,
Comprising priority storage means for storing in advance the priorities of the plurality of instructions;
IC chip program characterized by the above. The IC chip program according to claim 13,
The priority storage means is capable of adding and changing priorities;
IC chip program characterized by the above. In the IC chip program according to any one of claims 12 to 14,
Comprising execution management means for managing the execution state of the instruction selected based on the priority selection means;
IC chip program characterized by the above. In the IC chip program according to any one of claims 12 to 15,
A plurality of command input means for inputting a plurality of commands to the IC chip;
The priority selection means determines an execution order of a plurality of instructions input by the instruction input means;
IC chip program characterized by the above. The IC chip program according to claim 16, wherein
The plurality of command input means includes contact input means for inputting the command via a contact terminal, and non-contact input means for inputting the command in a non-contact manner.
IC chip program characterized by the above. In the IC chip program according to claim 16 or 17,
Comprising instruction holding means for holding the plurality of instructions input from the instruction input means;
IC chip program characterized by the above. In the IC chip program according to any one of claims 16 to 18,
The instruction execution means includes instruction interruption means for interrupting an instruction being executed;
Comprising interruption storage means for storing the execution content of the instruction suspended by the instruction interruption means until interruption;
IC chip program characterized by the above. In the IC chip program according to claim 19,
When a new instruction having a high priority is input during execution of the instruction, the instruction execution means interrupts the instruction being executed by the instruction interruption means, and the execution contents until the interruption are Preserving in the interrupt storage means and preferentially executing the new instruction;
IC chip program characterized by the above.

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