JP2007179294A - Ic card, and ic card program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dual card useful in debugging work. <P>SOLUTION: The dual card 1 is provided with a contact communication module 11 and a noncontact communication module 12, as communication modules for data communication with an external device. The dual card 1 is provided further with a mode change command 10 for switching the communication module used for transceiving data, from the communication module corresponding to a communication I/F with the activated dual card 1 to the other module. The data transmitted between a reader/writer and this IC card is confirmed during an operation of a system, even when not operated by the noncontact I/F, with the dual memory card 1 having the mode change command 10, so as to be utilized for the debugging work. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an IC card in which an IC chip is mounted on a card medium such as plastic, and more specifically, as a communication interface for communicating with a reader / writer, an IC having both a contact interface and a non-contact interface. Regarding cards.

  An IC card having two different communication I / Fs, that is, a contact type communication interface (InterFace, contact I / F) and a non-contact type communication interface (hereinafter referred to as non-contact I / F), is a dual interface IC card (hereinafter, referred to as “contact interface”). Dual card) or combination IC card.

  The dual card is a convenient IC card that can combine contact IC cards and non-contact IC cards into a single IC card. A commuter pass that operates with a non-contact I / F and a credit that operates with a contact I / F. This function is used to combine card functions into a single IC card.

When developing the above-described dual card program (operating system or application), an emulator to which an antenna coil as disclosed in Patent Document 1 can be connected is used for debugging and testing the program. It is common.
JP 2003-5994 A

  However, even if sufficient debugging and testing are performed using the above-mentioned emulator and a program is created, a problem caused by an unexpected phenomenon is detected in the dual card program when the dual card is operated in the system. There are cases where this happens.

  When a problem is detected in the dual card program, the cause of the problem is investigated by reproducing the problem with an emulator and a debugging operation is performed to remove the detected problem.

  If the emulator can reproduce the problem, debugging can proceed. However, it is rare that the emulator cannot reproduce the problem. In this case, the dual card operated in the system must be used for debugging. The operated dual card was not very convenient because it did not have a debugging function.

  Accordingly, an object of the present invention is to provide a dual card having a function that can be used for debugging by a dual card having a contact I / F and a non-contact I / F, and a dual card debugging method.

  A first invention for solving the above-described problem is an IC card having two communication interfaces, a contact interface and a non-contact interface, wherein the IC card uses a communication interface used for data transmission / reception as the IC card. The communication interface switching means for switching from the communication interface that activates to another communication interface is provided.

In the IC card of the present invention, it is preferable that the communication interface switching means provided in the IC card is realized by a single command, and the communication interface switching means operates when receiving the command.
The IC card includes not only a cash card-sized IC card but also a SIM (USIM) which is a shape obtained by cutting the vicinity of the IC chip of the IC card into a strip shape.

  The second invention is an IC card program mounted on an IC card having both a communication interface of a contact interface and a non-contact interface, wherein the CPU of the IC card is used for data transmission / reception. Is a program for an IC card for operating as a communication interface switching means for switching from a communication interface that activates the IC card to another communication interface.

  According to the above-described present invention, the IC card having both the communication interface of the contact interface and the non-contact interface is provided with the communication interface switching means, for example, when the non-contact interface does not operate during the operation of the system. Even if it exists, since the data transmitted between the reader / writer and the IC card can be confirmed by the contact interface, it can be used for a trouble reproduction test of debugging work.

  From here, the dual card 1 to which the present invention is applied will be described in detail with reference to the drawings.

  FIG. 1 is a diagram for explaining a dual card 1 to which the present invention is applied. As shown in FIG. 1, an IC module 1a having a contact terminal 1b used when the dual card 1 operates with a contact I / F is mounted on the dual card 1. The IC module 1a has a dual card 1a. A card IC chip 2 is molded.

  In addition, the dual card 1 incorporates an antenna coil 1c used when the dual card 1 operates with a non-contact I / F, and the antenna coil 1c is connected to the IC chip 2 molded in the IC module 1a. ing.

  When the above-described dual card 1 is attached to the contact reader / writer 3a, a supply voltage signal or the like is applied to the IC chip 2 molded from the contact reader / writer 3a to the IC module 1a via the contact terminal 1b of the IC module 1a. The supplied dual card 1 operates with a contact I / F.

  Further, when the dual card 1 is held over the non-contact type reader / writer 3b, the antenna coil 1c receives the radio wave from the non-contact type reader / writer 3b, and the IC chip 2 molded on the IC module 1a by this radio wave is applied to the IC chip 2. Power is supplied and the dual card 1 operates with a non-contact I / F.

In addition to such a general dual card function, the dual card 1 according to the present invention has a function capable of transmitting and receiving data through another communication I / F when activated by a certain communication I / F. It has been.
For example, even when the dual card 1 is activated by the contact I / F, data can be transmitted / received by the non-contact I / F, and even when the dual card 1 is activated by the non-contact I / F, Data can be transmitted and received by the contact I / F.

  This function of switching a communication I / F used for data transmission / reception to another communication I / F when activated by a certain communication I / F is realized by a program installed in the dual card 1. Thus, the communication I / F is switched from the activated communication I / F to another communication I / F.

  When the dual card 1 is activated by a certain communication I / F, the dual card 1 has a function of a contact reader / writer and a non-contact reader in order to transmit / receive data by another communication I / F. It is necessary to be mounted on a reader / writer having a writer function.

  FIG. 2 is a hardware configuration diagram of the IC chip 2 mounted on the dual card 1. The IC chip 2 includes a central processing unit (CPU) 20 via a bus 26, a read-only memory 21 (Read Only Memory, ROM), and an EEPROM 23 (Electrically Erasable Programmable Read-Only) as a rewritable memory. Random access memory 22 (Random Access Memory, RAM) as a volatile memory, and a contact I / F circuit 24 and a non-contact I / F circuit 25 for communicating data with an external terminal (not shown) It is connected.

  The present invention does not limit the specifications of the IC chip 2, and an IC chip having specifications suitable for the application of the dual card 1 can be selected. For example, the capacities of the ROM 21 and the EEPROM 23 are not limited, and the rewritable memory may be a memory other than the EEPROM such as a ferroelectric memory or a flash memory. Further, the IC chip 2 may include other devices (not shown) such as a timer circuit, a cryptographic operation circuit, or a coprocessor circuit.

  FIG. 3 is a diagram showing mode transition of the dual card 1. As shown in FIG. 2, the dual card 1 has at least two operation modes, that is, an operation mode and a debug mode.

The operation mode is a mode in which only the communication I / F in which the dual card 1 is activated operates.
When the dual card 1 is activated, the dual card 1 is always in the operation mode. When the dual card 1 is activated by the contact communication I / F, data is transmitted / received by the contact communication I / F. When activated by the I / F, data is transmitted / received by the non-contact communication I / F.

The debug mode is a mode in which data is transmitted and received by a communication I / F different from the communication I / F in which the dual card 1 is activated.
In the debug mode, when activated by the contact communication I / F, data is transmitted / received by the non-contact communication I / F. When activated by the non-contact communication I / F, the contact communication I / F Send and receive data.

The dual card 1 transitions from the operation mode to the debug mode by receiving a command for changing the mode.
The dual card 1 in the debug mode transitions to the operation mode when the dual card 1 card is reset or activated again.

FIG. 4 is a block diagram of a program installed in the dual card 1 for realizing the present invention.
Each program shown in FIG. 4 is a program for operating the CPU 20 using a device such as the RAM 22 provided in the IC chip 2, and the code of this program is stored in the ROM 21 or the EEPROM 23 of the IC chip 2.

  The dual card 1 is a communication module for data communication with an external device. The contact communication module 11 controls the contact I / F circuit 24 to transmit / receive data to / from the contact reader / writer 3a, and the non-contact I / F circuit 25. And a non-contact communication module 12 for transmitting and receiving data to and from the non-contact type reader / writer 3b.

  Furthermore, the dual card 1 includes a mode change command 10 that is an operating system command. The mode change command 10 is a command for switching the communication module used for data transmission / reception from the communication module corresponding to the communication I / F in which the dual card 1 is activated to another module.

  For example, when the dual card 1 is activated by the contact I / F circuit 24, the communication module used in the dual card 1 is the contact communication module 11, and the mode of the dual card 1 is the operation mode.

  When the mode change command 10 is received from the contact reader / writer 3a in this state, the mode of the dual card 1 is changed from the operation mode to the debug mode, and the communication module used for data transmission / reception is contact communication from the contact communication module 11. The module is changed to the module 12, and the dual card 1 transmits and receives data without contact with the contactless reader / writer 3b.

FIG. 5 is a flowchart showing a series of operations of the dual card 1. The first step S1 of this operation is a step in which the dual card 1 is activated.
In this step, the dual card 1 is activated by a communication I / F of either a contact I / F or a non-contact I / F, and the mode of the dual card 1 is set to the operation mode.

The next step S2 is a step of receiving the mode change command 10 through the communication I / F in which the dual card 1 is activated.
Depending on whether or not the mode change command 10 is received, the subsequent procedure is branched. If the mode change command 10 is received, the process proceeds to step S3. If not received, the process proceeds to step S5.

In step S3, the communication module used for data transmission / reception is switched.
In this step, the mode change command 10 operates to switch the communication I / F used for data transmission / reception from the activated communication I / F to another communication I / F.

  For example, when the dual card 1 is activated by the non-contact I / F, the communication module used for data transmission / reception is changed from the non-contact communication module 12 to the contact communication module 11, and the dual card 1 is in the debug mode. Operate.

  When the mode change command is not received in step S2, the dual card 1 remains in the operation mode, and the communication I / F used for data transmission / reception is the communication I in which the dual card 1 is activated. / F remains the same.

  When the dual card 1 receives a mode change command while operating in the operation mode, steps S3 and S4 are executed, and the mode of the dual card 1 transitions to the debug mode.

The figure explaining the dual card to which this invention was applied. 1 is a hardware configuration diagram of an IC chip. FIG. The figure which showed the mode transition of the dual card. The block diagram of the program mounted in a dual card. The flowchart which showed a series of operation | movement of a dual card.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dual card 10 Mode change command 11 Contact communication module 12 Non-contact communication module 2 IC chip 20 CPU
24 Contact I / F circuit 25 Non-contact I / F circuit

Claims (3)

  An IC card having two communication interfaces, a contact interface and a non-contact interface, wherein the IC card changes a communication interface used for data transmission / reception from a communication interface in which the IC card is activated to another communication interface. An IC card comprising a communication interface switching means for switching.   2. The IC card according to claim 1, wherein the communication interface switching unit provided in the IC card is realized by a single command, and the communication interface switching unit is activated when the command is received. IC card. An IC card program mounted on an IC card that has two communication interfaces of a contact interface and a non-contact interface, and the communication interface used for data transmission / reception is changed from the communication interface in which the IC card is activated to another communication An IC card program for operating the CPU of the IC card as communication interface switching means for switching to an interface.

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