JP5724701B2 - IC chip, processing method in IC chip, IC chip processing program, and portable terminal - Google Patents

Description

  The present invention relates to a processing technique in an IC chip corresponding to a plurality of interfaces.

  Conventionally, portable terminals equipped with a UIM (User Identity Module) equipped with a contact IC (Integrated Circuit) chip have been widely used. In recent years, by mounting a non-contact type IC chip on such a portable terminal, various functions (services) can be added to the UIM using a non-contact interface in addition to conventional functions (for example, subscriber authentication processing). The development of a global system for provision is underway. Non-contact IC chips mounted on portable terminals include, for example, so-called FeliCa chips that employ a FeliCa (registered trademark) communication method, and CLF (Contact Less Front-end) defined by NFC (Near Field Communication) standards. )and so on.

  As for UIM, it is considered to install software for non-contact communication in addition to the software for contact communication on the contact IC chip.

  Considering the above configuration, UIM has two types of software for contact and non-contact communication on one chip (1 CPU), and since each entity is different, reset processing and command of contact or non-contact communication interface Events such as processing may occur simultaneously on two interfaces, that is, conflicts may occur. As a case where interface reset processing and command processing conflict, for example, the battery of the mobile terminal runs out of power and the battery is charged after the power is turned off (Power loss), and then the user turns on the power. (When power is supplied to the UIM) When the mobile terminal is placed on a non-contact reader, or an error occurs in the communication between the controller (control unit) responsible for the function of the mobile terminal and the UIM, the mobile terminal resets the interface. There is a case where the user is deceived by a non-contact reader at the same time as executing the above.

  The reset processing of the UIM contact communication interface has a processing procedure and a processing time constraint in accordance with specifications established by a standardization organization such as ETSI (European Telecommunications Standards Institute). If the UIM does not observe this processing time constraint, the mobile terminal cannot correctly recognize the UIM, and thereafter the UIM cannot function on this interface. Therefore, the reset processing of the UIM contact communication interface has a very high priority. In addition to the interface reset process, the UIM performs an operating system initialization process in preparation for the execution of the received command.

  On the other hand, in a service using a non-contact communication interface, since the user himself puts the mobile terminal as a non-contact reader, it is clear that processing failures and processing delays greatly affect the quality of services provided. Preferential processing (command processing) is required.

  In Patent Document 1, when a software module that processes information transmitted and received by a plurality of non-contact communication is started and completed while another software module is being started, A method for resuming module processing during activation is disclosed.

JP 2010-67199 A

  By the way, since the conventional UIM has one piece of software for contact communication, the above-described contention does not occur. Therefore, when the UIM receives a reset signal from the controller responsible for the function of the mobile terminal via the UIM contact terminal, the UIM performs the corresponding reset processing while observing the contents specified in the standard specifications and executes the received command. After initializing the operating system in preparation for receiving a command signal, it was waiting for a command signal to be received.

  However, when two types of software for contact and non-contact communication exist in the UIM, a conflict occurs as described above. Moreover, since these two competing processes are required to have a high priority, if the command process corresponding to the service request is executed after the interface reset process, the latter process may not satisfy the required time constraint. There is.

  Therefore, the present invention has been made in view of such points, and the reset processing related to a certain communication means and the command processing corresponding to a service request with severe processing time restrictions are simultaneously generated via another communication means. IC chip, IC chip processing method, IC chip processing program, and portable terminal capable of preferentially executing command processing according to service request while maintaining reset processing time constraints The purpose is to provide.

  In order to solve the above problem, the invention according to claim 1 is the first execution for executing the reset process for the first communication means when the reset signal is received via the first communication means. And a second execution means for executing a command process according to the command signal when a command signal is received via the second communication means, and the first execution means performs the first execution by the first execution means. When a command signal is received via the second communication means during execution of the reset process for one communication means, the first execution means responds to the received command signal in the reset process. The processing necessary for executing the command processing is executed, and after the execution of the required processing, the second execution means executes the command processing according to the command signal, and after the execution of the command processing. Serial first execution means and executes a process other than the necessary processing.

  The invention according to claim 2 relates to command processing according to the received command signal in the recovery processing for recovering the processing interrupted by reception of the reset signal in the IC chip according to claim 1. And a specifying unit that specifies the recovery process to be performed as a process other than the necessary process.

  According to a third aspect of the present invention, in the IC chip according to the first or second aspect, the first execution unit executes a reaction for a reset in the reset process within a limited time, and the second execution unit. Is characterized in that a processing response indicating a result of the command processing is executed within a limited time.

According to a fourth aspect of the present invention, in the IC chip according to any one of the first to third aspects, the IC chip is mounted on a UIM (User Identity Module).

  According to a fifth aspect of the present invention, in the IC chip according to the fourth aspect, the UIM is mounted on a portable terminal.

  The invention according to claim 6 is a processing method in an IC chip, wherein when a reset signal is received via the first communication means, a first process for executing a reset process relating to the first communication means An execution step, and a second execution step for executing a command process according to the command signal when a command signal is received via the second communication means, and resetting the first communication means When a command signal is received via the second communication means during execution of the process, a process necessary for executing a command process corresponding to the received command signal is executed in the reset process. And executing a command process according to the command signal after executing the necessary process, and executing a process other than the necessary process after executing the command process. That.

  According to a seventh aspect of the present invention, there is provided a processing program for an IC chip, wherein when a reset signal is received via a first communication means, the computer included in the IC chip performs a reset process related to the first communication means. When a command signal is received via the first execution means to be executed and the second communication means, the first execution means functions as second execution means for executing command processing according to the command signal, and When a command signal is received via the second communication means during execution of the reset process related to the first communication means by the execution means, the first execution means receives the received one of the reset processes. The processing necessary for executing the command processing corresponding to the command signal is executed, and after the execution of the necessary processing, the second execution means executes the processing corresponding to the command signal. Run the command processing, the first execution means after execution of the command processing is characterized in that to function to execute processing other than the processing required.

  The invention according to claim 8 is a portable terminal comprising a contact IC chip and a controller capable of communicating with the IC chip via the first communication means, wherein the contact IC chip is the first from the controller. When a reset signal is received via the communication means, a first execution means for executing a reset process relating to the first communication means, and a command signal from the non-contact IC chip via the second communication means Is received, the second execution means for executing command processing according to the command signal, and the first execution means during execution of the reset processing related to the first communication means. When a command signal is received via the second communication means, the first execution means executes a command process corresponding to the received command signal in the reset process. The second execution means executes command processing according to the command signal after execution of the necessary processing, and the first execution means executes the command processing after execution of the command processing. It is characterized in that processing other than necessary processing is executed.

  According to the present invention, even when reset processing relating to a certain communication means and command processing corresponding to a service request with severe processing time restrictions occur simultaneously via other communication means, the time restriction of the reset processing is observed. However, command processing according to service requests can be executed with priority, and processing results can be responded to service requests with severe processing time constraints.

FIG. 2A is a block diagram illustrating a schematic configuration example of a mobile terminal according to the present embodiment. (B) is a block diagram showing a schematic configuration example of the UIM 13 according to the present embodiment. 6 is a diagram illustrating an example of an operation sequence in the mobile terminal 1 when a reset process according to a reset signal received from a controller 11 and a command process according to a command signal received from a CLF 12 occur simultaneously. FIG. It is a figure which shows an example of the software functional block in UIM13 which concerns on this embodiment. It is a figure which shows the example of the determination information corresponding to the process etc. which were recorded as process interruption information at the time of interruption, and the said process. It is a figure which shows the example of the determination information corresponding to the process etc. which were recorded as process interruption information at the time of interruption, and the said process. It is a flowchart which shows the process at the time of the electric power supply detection in CPU131 of UIM13 which concerns on this embodiment. It is a flowchart which shows the interruption process in CPU131 of UIM13 which concerns on this embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiment described below is an embodiment when the present invention is applied to a mobile terminal.

  First, with reference to FIG. 1, the configuration and functional overview of the mobile terminal according to the present embodiment will be described.

  FIG. 1A is a block diagram illustrating a schematic configuration example of a mobile terminal according to the present embodiment. As shown in FIG. 1A, the mobile terminal 1 includes a controller 11, a CLF 12, and a UIM 13 that are responsible for the function of the mobile terminal 1. For example, a mobile phone, a PDA, or the like including operation keys, a display, a speaker, a mobile communication unit, and the like can be applied to the mobile terminal 1.

Although not shown, the controller 11 is a CPU (Central Processing Unit), a nonvolatile memory (such as a flash memory) that stores various programs and data, a RAM that temporarily stores data, and an I / O that serves as an interface with the UIM 13. It has a port. The controller 11 can communicate with the UIM 13 through the interface X. And the controller 11 performs various processes according to the communication (communication performed via a mobile communication network and the internet) process of the portable terminal 1, and the operation instruction from the user of the portable terminal 1 via the operation key. In such processing, the controller 11 transmits a command signal related to, for example, encryption processing or authentication processing to the UIM 13 through the interface. In addition, the controller 11 is configured to transmit a reset signal of the interface X to the UIM 13 when a communication error occurs between the controller 11 and the UIM 13, for example.

  The CLF 12 is a non-contact IC chip that performs non-contact communication defined by the NFC standard. Although not shown, the CLF 12 includes a CPU, a nonvolatile memory that stores various programs and data, a RAM that temporarily stores data, and a UIM 13. An I / O port (SWIO) and the like for interfacing between them are provided. The CLF 12 is connected to an antenna 12a for transmitting / receiving various signals to / from the non-contact reader 2 in a non-contact field. When the user places the portable terminal 1 over the contactless reader 2, a command signal related to a service request transmitted from the contactless reader 2 is transmitted to the UIM 13 through the interface Y.

The UIM 13 is one of UICCs (Universal Integrated Circuit Cards), and is equipped with a contact IC chip whose functions are expanded based on a conventional SIM (Subscriber Identity Module). FIG. 1B is a block diagram illustrating a schematic configuration example of the UIM 13 according to the present embodiment. As shown in FIG. 1B, the UIM 13 includes a CPU (Central Processing Unit) 131 that handles signal processing, a ROM (Read Only Memory) 132 that stores predetermined data and programs, and a RAM (Random Access that temporarily stores data). Memory) 133, a nonvolatile memory (for example, flash memory or EEPROM) 134 for storing predetermined data, programs, and the like, an I / O port (input / output port) 135, and the like. The UIM 13 is provided on the IC card base B and is mounted on the portable terminal 1 as an IC card. As shown in FIG. 1B, the I / O port 135 has eight terminals C1 to C8 (contact terminals of a contact IC chip) defined by ISO / IEC7816 or the like. Here, the C1 terminal is a power supply terminal (VCC), and the C5 terminal is a ground terminal (GND). The C2 terminal is a reset terminal (RST) and is used for inputting a reset signal of the interface X with the controller 11. The C3 terminal is a clock terminal (CLK) and is used to input a clock of the interface X with the controller 11. The C7 terminal (an example of first communication means) is a terminal that bears the interface X with the controller 11 and is used for communication between the UIM 13 and the controller 11. The C6 terminal (an example of the second communication means) is a terminal that bears the interface Y with the CLF 11 and is used for communication between the CLF 12 and the UIM 13. Note that SWP is applied to the communication protocol between the CLF 12 and the UIM 13 as described above.

  The programs stored in the nonvolatile memory 134 of the UIM 13 include an operating system (hereinafter referred to as “OS”), a plurality of types of application programs, and the IC chip processing program of the present invention. Here, the application program (hereinafter referred to as “application”) is a program that defines a plurality of commands (instructions) executed by the CPU 131 and their execution order. Processing of commands in the application is called command processing. The non-volatile memory 134 of the UIM 13 stores personal information such as a telephone number and a subscriber ID, electronic money balance information, and the like.

  The CPU 131 (first execution means) of the UIM 13 receives the interface X reset signal (reset signal related to contact communication) from the controller 11 via the connection terminal of the contact IC chip. Reset processing (reset processing related to contact communication) is executed. This reset processing includes hardware initialization, reaction to the controller 11 (initial response of interface reset), OS initialization (initialization of operating parameters of the OS), and preparation processing for executing command processing. The Here, initialization of hardware includes, for example, clock setting of UIM 13, operation check of storage device (RAM, etc.) and peripheral circuits (random number generator, cryptographic coprocessor, etc.), initialization of storage device (RAM, etc.) , Stack pointer initialization, peripheral circuit initialization, and the like. In addition, the reaction to the controller 11 has some processing time constraints (needs to respond within the constraint time), and the processing time has little variation. On the other hand, in the preparation process, there is no direct processing time constraint, but the processing time may vary considerably depending on the state of the OS when the UIM 13 is reset. As an example of this preparation process, there is a recovery process for recovering a process interrupted by receiving a reset signal (a process of the entire application, a command process in the application). If any processing is executed when the interface reset occurs, the processing content is recorded as processing interruption information. As a result, the process is interrupted by an interface reset, but a process for recovering the interrupted state is executed as part of the preparation process. If no processing is performed when the interface reset occurs, the recovery processing is not included as the preparation processing.

  The CPU 131 (second execution means) of the UIM 13 receives the command signal (service) when a command signal related to a service request for non-contact communication is received from the CLF 12 via the connection terminal of the contact IC chip. Command processing (that is, command processing of any application corresponding to the service request) is executed, and a processing response indicating a result of the processing is sent to the CLF 12 via the connection terminal of the contact IC chip ( To reply). Here, in the service request processing using the non-contact interface, there is a processing time constraint for the entire processing at the service level, and at the same time, there are processing time constraints for several command processes constituting the service request processing. There is a case. That is, it is necessary to respond to the service request within the restricted time.

  In this embodiment, a reset process corresponding to the reset signal received from the controller 11 and a command process corresponding to the command signal received from the CLF 12 (command process corresponding to a service request with severe processing time restrictions) are performed. If they occur at the same time (conflict), that is, if a command signal is received from the CLF 12 during execution of the reset process of the interface X, the CPU 131 of the UIM 13 performs the following process.

  That is, the CPU 131 of the UIM 13 executes a process necessary for executing a command process corresponding to the received command signal in the reset process, and then executes a command process corresponding to the received command signal. . Here, the processing necessary for executing the command processing corresponding to the command signal includes hardware initialization, reaction to the controller 11, initialization of the OS, and preparation processing for executing the command processing. The minimum necessary preparation process specified (by the specifying means) based on determination information (stored in the non-volatile memory) set in advance is included. The preparatory processes other than the minimum necessary preparatory process are executed after executing the command process corresponding to the command signal.

  FIG. 2 is a diagram illustrating an example of an operation sequence in the mobile terminal 1 when a reset process according to the reset signal received from the controller 11 and a command process according to the command signal received from the CLF 12 occur simultaneously. . The preparatory processes other than the minimum necessary preparatory processes are lowered in priority as shown in FIG. 2, and are executed after a process response to the CLF 12 (the preparatory process whose priority was lowered before moving to the command reception standby state is executed). Executed). As a result, it becomes possible to respond to the processing result while observing the processing time restriction of the command processing corresponding to the service request overlapping with the interface reset processing.

Here, the determination information for specifying the minimum necessary preparation processing includes, for example, a list shown in any of (a) to (i) below.
(A) An application list (a list in which identification information for identifying an application is described) that can execute the process of the application recorded at the time of interruption regardless of the success of the process.
(B) A command list of applications that can be executed regardless of the success of the application processing recorded at the time of interruption (a list in which identification information for identifying the application, identification information for identifying the command therein, and the like are described) )
(C) An application list in which the application process recorded at the time of interruption cannot be executed regardless of its success
(D) The application process recorded at the time of interruption cannot be executed regardless of the success of the application process list (e) Processing at interruption described in (a) to (d) “Application processing ”Is replaced with“ application command processing ”. The processing at the time of interruption described in the list (f) (a) to (d)“ application processing ”is changed to“ update processing for an area in a nonvolatile memory ”. The above list (g) in the case of replacing the above processing (application processing) in the above-described list (g) (a) to (d) with “application processing included in a certain application set” ( h) The processing at the time of interruption “application processing” described in (a) to (d) is changed to “commands included in a certain command set” "Interrupt processing" in the list (i), (b) and (d) above when "Application processing" is replaced with "Application command processing and command signal reception interface at this time" In addition, the above list when the “command list” described in (b) and (d) is replaced with the “combination list of application, command and interface”

  The CPU 131 of the UIM 13 determines from the list included in the determination information for specifying the minimum necessary preparation processing, and the recovery processing of the processing recorded as the processing interruption information at the time of interruption is in response to the service request. If it is not related to command processing, it is not necessary processing to execute command processing according to the service request. Therefore, the priority of the recovery processing of the processing recorded at the time of the interruption is lowered and waited, and instead the service is processed. By executing the command processing according to the request first, the processing response is returned to the CLF 12 within the processing restriction time. In other words, scheduling is performed on the subtasks obtained by dividing each process, thereby responding to the service request while keeping the processing time constraint.

  Next, the operation of the mobile terminal according to the present embodiment will be described with reference to FIGS.

  FIG. 3 is a diagram illustrating an example of software function blocks in the UIM 13 according to the present embodiment. In the example illustrated in FIG. 3, applications A to D are stored in the interfaces X and Y that can simultaneously function (function in software) and the UIM 13 that has these control functions. Note that the determination information shown in FIG. 3 may be configured so that the execution environment collectively includes all applications (A to D) stored in the UIM 13, or each application holds and executes as necessary. You may comprise so that an environment may refer. In any case, the determination information can be set from outside the UIM 13 and can be updated.

  4 and 5 are diagrams illustrating examples of processing and the like recorded as processing interruption information at the time of interruption and determination information corresponding to the processing and the like.

  FIG. 4A shows an example in the case of the above (a). For example, a power loss occurs during execution of a command (Command) of the application (Application) D, and then the mobile terminal 1 is non-displayed. It is assumed that the command processing caused by being struck by the contact reader 2 competes with the reset processing of the interface X by supplying power to the UIM 13.

  FIG. 4B shows an example of replacement of (b) in the case of (e) above. For example, a power loss occurs during execution of command (Command) B of application (Application) D, Thereafter, it is assumed that the command processing when the portable terminal 1 is deceived by the contactless reader 2 competes with the reset processing of the interface X by supplying power to the UIM 13.

FIG. 5A shows an example of replacement of (c) in the case of (f) above. For example, during the update of the variable First Name in the process of the command (Command) A of the application (Application) D A case is assumed in which power loss occurs, and thereafter, command processing due to the mobile terminal 1 being trapped by the non-contact reader 2 competes with reset processing of the interface X due to power supply to the UIM 13. Note that the variable name “First Name” is actually an address and length (for example, 0x0010,4: a 4-byte area from the specified address), an address range (for example, an area between 0x0010 and 0x0013), or the OS It is represented by data such as a uniquely identifiable ID.

  FIG. 5B shows an example of replacement of (b) in the case of (i) above, during execution of processing of command (Command) A of application (Application) D by receiving a command signal. A case is assumed in which power loss occurs, and thereafter, command processing due to the mobile terminal 1 being trapped by the non-contact reader 2 competes with reset processing of the interface X due to power supply to the UIM 13.

  FIG. 6 is a flowchart showing processing at the time of power supply detection in the CPU 131 of the UIM 13 according to the present embodiment. FIG. 7 is a flowchart showing interrupt processing in the CPU 131 of the UIM 13 according to the present embodiment.

  The process illustrated in FIG. 6 is started when power supply to the UIM 13 or the like is detected in the case assumed in FIG. 4 or 5, for example. In the process shown in FIG. 6, when the CPU 131 of the UIM 13 receives a reset signal from the controller 11 (step S1), the CPU 131 starts the reset process, and first executes hardware initialization as described above (step S2). .

  Next, the CPU 131 of the UIM 13 executes a reaction (initial response for interface reset) with respect to the controller 11 (step S3).

  Next, the CPU 131 of the UIM 13 performs OS initialization (initialization of operating parameters of the OS) (step S4). This OS initialization process is a process for building the OS initial state, and is an essential process regardless of the application.

  Next, the CPU 131 (interrupt process determination function) of the UIM 13 determines whether there is an interrupted process by referring to the process interrupt information and confirming whether there is a process recorded at the time of the interrupt (step S5). . When the CPU 131 of the UIM 13 determines that there is no interrupted process (step S5: NO), the CPU 131 ends the process illustrated in FIG. 6 and determines that there is an interrupted process (step S5). : YES), the process proceeds to step S6.

  In step S <b> 6, the CPU 131 of the UIM 13 determines whether or not a command signal related to a service request has been received from the CLF 12. Then, when the CPU 131 of the UIM 13 has not received the command signal related to the service request (step S6: NO), the CPU 131 proceeds to step S7, and when the command signal related to the service request is received (step S6: YES). ), Go to step S8.

  In step S7, the CPU 131 of the UIM 13 executes a recovery process (a process for recovering the interrupted process) for recovering the interrupted process as a preparation process for executing the command process, and the process proceeds to step S14.

  On the other hand, in step S8, the CPU 131 of the UIM 13 selects determination information based on the process recorded at the time of interruption (step S8). For example, when the process recorded at the time of interruption is the application D as shown in FIG. 4A, a determination information corresponding to the application D (a list in which identification information for identifying the applications A and C is described) is described. Including) is selected and obtained from the non-volatile memory 134.

Next, the CPU 131 of the UIM 13 confirms the content of the recovery processing of the interrupted processing (step S9), and relates to the recovery processing to be executed before the command processing (in other words, related to the command processing according to the received command signal). It is determined whether or not there is a recovery process to be performed (the above-described minimum necessary preparation process) (step S10). This determination is performed based on the command signal received in step S6 and the determination information selected in step S8. For example, in the case of FIG. 4 (A) or (B), the process described in the list included in the determination information is a process related to the received command signal (for example, an application including the command signal (command)). In the case of processing, or processing of a command matching the command signal (command) ), it is determined that there is no recovery processing to be executed before command processing. This is because the command processing can be executed regardless of the recovery processing of the interrupted processing.

  When the CPU 131 of the UIM 13 (an example of the specifying unit) determines that there is a recovery process to be executed before the command process (step S10: YES), the CPU 131 specifies the recovery process to be executed before the command process. The process proceeds to step S11. If there is a recovery process other than the recovery process to be executed before the command process specified here, a setting is made to lower the priority of the recovery process.

  On the other hand, if the CPU 131 of the UIM 13 determines that there is no recovery process to be executed before the command process (step S10: NO), the process proceeds to step S12.

  In step S11, the CPU 131 of the UIM 13 executes the recovery process of the interrupted process specified as the recovery process to be executed before the command process, and proceeds to step S12.

  In step S12, the CPU 131 of the UIM 13 executes command processing according to the command signal (service request) received in step S6, and returns a processing response indicating the result of the processing to the CLF 12.

  Next, the CPU 131 of the UIM 13 executes a recovery process for the interrupted process (step S13), and proceeds to step S14. Here, if there is a recovery process whose priority is lowered in the case of going through step S11, this recovery process is executed.

  In step S14, the CPU 131 of the UIM 13 clears the processing interruption information. Then, the CPU 131 of the UIM 13 ends the process shown in FIG. 6 and shifts to the reception of the command signal through the interface X or Y and the command process corresponding to the received command signal (transfers to the normal process).

  On the other hand, the process shown in FIG. 7 is a process when an interrupt occurs due to reception of a command signal through the interface Y. For example, the interrupt is arbitrarily generated after the initialization of the hardware in step S2 in the process shown in FIG. 6, whereby the process is interrupted and the process shown in FIG. 7 is started. In the process shown in FIG. 7, the CPU 131 of the UIM 13 first performs a command signal reception process (command reception process) (step S21), and then determines whether or not the interrupted process recovery process is being executed. Is determined (step S22). If the CPU 131 of the UIM 13 determines that the interrupted process recovery process is not being executed (step S22: NO), it ends the process (interrupt process) shown in FIG. 7 and recovers the interrupted process. If it is determined that the process is being executed (step S22: YES), the process proceeds to step S23.

  The processes in steps S23 and S24 are the same as the processes in steps S8 and S9 shown in FIG. Next, in step S25, the CPU 131 of the UIM 13 determines whether there is a recovery process that has not been executed in step S22 and should be executed before command processing. If it is determined that there is (step S25: YES), the process proceeds to step S26, and if not (step S25: NO), the process proceeds to step S27. Then, the CPU 131 of the UIM 13 ends the process (interrupt process) shown in FIG. 7 after executing step S27 (similar to step S12). Note that after the interruption process is completed, the process is resumed from the point where it was interrupted in the process shown in FIG.

  As described above, according to the above embodiment, when the reset process according to the reset signal received from the controller 11 and the command process according to the command signal related to the service request received from the CLF 12 occur simultaneously. In addition, the UIM 13 executes a reaction for the controller 11 and a necessary minimum preparation process in the reset process, and then executes a command process corresponding to the received command signal, and then performs a minimum necessary preparation. Since it is configured to execute preparatory processing other than processing (for example, processing that recovers the suspended state of processing that is not related to command processing in response to a service request), a command that responds to a service request while observing reset processing time constraints Processing can be prioritized and service requests with severe processing time constraints can be met. Processing results Te can respond to.

1 mobile terminal 2 non-contact reader 11 controller 12 CLF
13 UIM

Claims (8)

A first execution means for executing a reset process for the first communication means when a reset signal is received via the first communication means;
Second execution means for executing command processing in accordance with the command signal when a command signal is received via the second communication means;
With
When a command signal is received via the second communication means during the execution of the reset process related to the first communication means by the first execution means, the first execution means includes the reset process. The processing necessary for executing the command processing according to the received command signal is executed, and after the execution of the required processing, the second execution means executes the command processing according to the command signal, The IC chip, wherein the first execution means executes a process other than the necessary process after executing the command process. The IC chip according to claim 1,
Of the recovery process for recovering the process interrupted by the reception of the reset signal, the recovery process related to the command process corresponding to the received command signal is specified as a process other than the necessary process. IC chip characterized by that. The IC chip according to claim 1 or 2,
The first execution means executes a reaction for reset within the restricted time in the reset process,
The second execution means executes a processing response indicating a result of the command processing within a limited time. The IC chip according to claim 1, wherein the IC chip is mounted on a UIM (User Identity Module).   The IC chip according to claim 4, wherein the UIM is attached to a mobile terminal. A processing method in an IC chip,
A first execution step for executing a reset process related to the first communication means when a reset signal is received via the first communication means;
A second execution step of executing command processing in accordance with the command signal when the command signal is received via the second communication means;
Including
When a command signal is received via the second communication means during execution of the reset process related to the first communication means, a command process corresponding to the received command signal is executed among the reset processes. An IC characterized in that a process necessary for the execution is performed, a command process corresponding to the command signal is performed after the necessary process is performed, and a process other than the necessary process is performed after the command process is performed Processing method in the chip. The computer included in the IC chip
A first execution means for executing a reset process relating to the first communication means when a reset signal is received via the first communication means; and
When a command signal is received via the second communication means, function as a second execution means for executing command processing according to the command signal,
When a command signal is received via the second communication unit during execution of the reset process related to the first communication unit by the first execution unit, the first execution unit includes the reset process. The processing necessary for executing the command processing according to the received command signal is executed, and after the execution of the required processing, the second execution means executes the command processing according to the command signal, An IC chip processing program that causes the first execution means to execute a process other than the necessary process after executing a command process. In a portable terminal comprising a contact IC chip and a controller that can communicate with the IC chip via the first communication means,
The contact type IC chip is:
When a reset signal is received from the controller via the first communication means, a first execution means for executing a reset process related to the first communication means;
Second execution means for executing command processing in accordance with the command signal when a command signal is received from the non-contact type IC chip via the second communication means;
With
When a command signal is received via the second communication means during the execution of the reset process related to the first communication means by the first execution means, the first execution means includes the reset process. The processing necessary for executing the command processing according to the received command signal is executed, and after the execution of the required processing, the second execution means executes the command processing according to the command signal, The portable terminal characterized in that the first execution means executes a process other than the necessary process after executing the command process.

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