JP4148502B2 - Portable information processing apparatus having a plurality of information transmission means - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable information processing apparatus such as an IC card corresponding to a plurality of information transmission means.
[0002]
[Prior art]
In an IC card, a command is received by serial transmission from an external terminal (reader / writer) via a physical transmission path (contact information transmission means) or a non-contact transmission path (non-contact information transmission means). Processing is executed internally, and the processing result is transmitted as a response to the external terminal through the same transmission path.
[0003]
Currently, there is an IC card provided with a plurality of information transmission means (contact type / non-contact type). One with two or two physical interfaces of contact / non-contact, T = 0 (commands are sent one character at a time in contact mode), T = 1 (commands in block format in contact mode) (Send by) (specified by ISO 7816.3), T = CL (non-contact type) (specified by ISO 14443/4), etc., which correspond to any one or a combination of a plurality of logical communication protocols Generally, it is used as an ID card or a credit card. Cards with both contact and non-contact interfaces consider convenience, often use non-contact interfaces for entry / exit management, pass gates, etc., and contact-type interfaces for financial settlement applications. .
[0004]
Further, the CPU (Central Processing Unit) of the IC card normally operates with an external clock input from a terminal. In recent years, the processing speed has been improved due to the high performance of the CPU, and it has become possible to execute at high speed by specifying multiples of the external clock (2, 4, 8 times, etc.). In the following, the designation of the multiple is called double speed setting.
Furthermore, an increase in the capacity of an EEPROM (non-volatile memory) or the like has made it possible to install a plurality of applications on an IC card (eg, Java Card).
[0005]
[Problems to be solved by the invention]
With a conventional IC card that has a plurality of information transmission means and can be equipped with a plurality of applications, the processing speed cannot be set in accordance with each information transmission means and application. For example, when an entry / exit management application is used in a non-contact interface, it is desired to set it to operate at a low processing speed that saves power in order to increase the communication distance. However, because some other financial application uses cryptographic processing, we want to set it to improve the processing speed anyway.
[0006]
When an application having such a different request is mounted on one IC card , there is a problem that the processing speed cannot be set (double speed setting) depending on which application is executed according to the transmission means.
[0007]
Although there is one that discriminates a plurality of information transmission means and switches executable commands (Japanese Patent Laid-Open No. 11-272824), it is related to security in command units, and a plurality of applications cannot be selected efficiently. .
In addition, there is one that switches the clock frequency depending on the difference between the contact and non-contact interfaces (Japanese Patent Laid-Open No. 11-343441), but this relates to the processing speed of the entire card, and the processing speed is switched in units of applications according to the application. I can't.
[0008]
[Means for Solving the Problems]
The present invention is intended to solve the above-described problem, and in a portable information processing apparatus having a plurality of information transmission means, capable of specifying a processing speed, and capable of mounting a plurality of applications, each information transmission means is discriminated. In addition, it is intended to provide a mechanism for automatically selecting the double speed setting according to the application.
[0009]
FIG. 1 is a diagram showing a configuration example of a portable information processing apparatus to which the present invention is applied.
Here, the portable information processing device 1 such as an IC card has information transmission means 2 to 5. The information transmission means 2 and 3 are non-contact type means for transmitting information via radio waves. For example, radio wave modulation methods are different from each other. The information transmission means 4 and 5 are means for realizing information transmission in a contact type, and have different communication protocols with reader / writers that are external terminals. For example, the information transmission means 4 has T = 0, the information transmission means 5 T = 1. The identification unit 6 identifies which information transmission unit is selected, and the identification result is passed to the OS execution unit of the CPU 7. The CPU 7 is an arithmetic device that interprets and executes (for example, reads / writes) commands from the reader / writer transmitted via the information transmission means, and sends a response to the reader / writer. The information storage means 8 comprises a volatile memory area that provides a work area when the CPU performs calculations, and a nonvolatile memory area that stores data such as control information and software.
[0010]
In the present invention, the application management table stored in the non-volatile memory area managed by the OS includes an application ID (AID: at least a unique number inside the card) and items of double speed setting by the information transmission means for each AID. The information of the communication means (interface, communication protocol, etc.) is determined by the identification means, and the processing speed is set (double speed setting) according to the application to which the command is transmitted. The execution speed, communication distance (in the case of non-contact), power consumption, etc. can be appropriately distributed according to the environment. In the present invention, the number of information transmission means is not particularly limited, and one or more of contact type / non-contact type, or one of contact type / non-contact type, and one of contact type / non-contact type, contact type Alternatively, it can be applied to any case such as a non-contact type and a plurality of cases.
[0011]
Next, an application management method will be described.
In the present invention, the OS unit or application management unit of the CPU 7 is provided with an application management table as shown in FIG. 2, for example. This management table has items of AID (application ID, a number unique at least inside the card) and double speed setting by information transmission means for each AID. The numerical values in the application management table may be rewritable with a dedicated command.
[0012]
In the example of FIG. 2, when a command is transmitted to an application (finance) with an AID of 1 through a contact interface, the command operates at 8 times speed, and a command is sent to an application (entrance / exit) with an AID of 2 through a non-contact interface. When transmitted, it operates at double speed. In addition, an AID of 0 is a special case and indicates the IC card OS itself. This is to specify how many times the operation as the OS from the reception of the command to delivery to the application is executed. Further, the number of transmission means may be further increased, and a combination of non-exclusive transmission means may be used. In this case, the contact-type interface and the non-contact-type interface are not used at the same time, but there may be a case where the contact-type interface and the communication protocol are T = 1 or T = 0.
[0013]
FIG. 3 shows a management table in the case of setting the double speed by a combination of the contact / non-contact type and the communication protocol. T = 0 is often used overseas and in mobile phones, and T = 1 is often used in Japan. Therefore, if T = 0, it is determined that there is a high possibility of being a mobile phone, and a setting of reducing the operating speed to save power can be considered.
[0014]
The “communication means” registered in the application management table must be understood without the OS analyzing the content of the command from the external terminal (reader / writer). Therefore, as shown in FIG. 1, the present invention includes a determination circuit or determination software for a transmission means and an identification means 6 for notifying the OS (CPU) of the determination circuit. For example, the type of interface is detected by hardware, and the communication module at the lower layer of the OS determines and notifies the OS of the difference in communication protocol.
[0015]
FIG. 4 is a diagram showing a processing flow in the OS unit.
When power is supplied to a portable information processing apparatus, for example, an IC card by contact or non-contact means, the OS unit of the IC card is activated (step S1), and after selecting communication conditions, OS-related initialization (memory (Check etc.) is executed (step S2). Next, the OS discriminates the information (interface, communication protocol, etc.) of the transmission means known so far (step S3), refers to the application management table and sets the processing speed of the OS itself (double speed setting) (step S4) Waiting for command reception from the external terminal (step S5). When the external terminal transmits a command to the IC card using an arbitrary communication protocol and the OS of the IC card receives the command (the contents of the command are not analyzed yet), the OS selects an application set as a default (step S6). ). The application selection process may be left to a dedicated application other than the OS. Next, the OS analyzes the content of the received command (step S7), determines whether or not the command is an application selection command (step S8), and if it is an application selection command, performs an application selection process designated by the command. In step S9, the processing speed of the selected application is set with reference to the application management table (step S10), the command is transferred to the selected application, and control is transferred (step S11). In step S8, if the command is not a selection command, the command is passed to the selected application (at this time, the selected default application), and the control is transferred to the application. At this time, referring to the application management table, The control is transferred after setting the double speed of the application from the AID. Next, referring to the application management table, the processing speed of the OS itself is reset (step S12), the processing result from the application is transmitted to the external terminal (step S13), and the next command is awaited (step S14). Thereafter, the processes in steps S7 to S13 are repeated. In step S12, in the case of the same application as the previous time, the double speed value may be cached in order to increase the processing speed.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
Here, an IC card will be described as an example of a portable information processing apparatus in which each application can set a processing speed (double speed setting) due to a difference between a contact / non-contact interface. However, the present invention is not limited to an IC card. Absent.
It is assumed that the IC card in this example has the following functions.
The communication interface has a contact type interface and a non-contact type interface. Depending on which interface has been used to transmit information, a communication module unit is provided to drive the information. The OS is used to transmit information. It shall have a function to know whether or not.
[0017]
Assume that the OS unit or application management unit has the application management table shown in FIG. This application management table has an AID (application ID, at least a unique number in the card) and an item for specifying double speed by the transmission means for each AID. The values in the application management table may be rewritable with a dedicated command.
[0018]
In the example of FIG. 5, it is assumed that two applications with AID = 1 and 2 are mounted on the IC card, and the default application is set to a financial application with AID = 1. In this example, when a command is transmitted to an application with an AID of 1 through a contact type interface, the operation is performed at 8 times speed, and when a command is transmitted to an application with an AID of 2 through a non-contact type interface, the operation is performed at a double speed. Operate. Note that an AID of 0 is a special case and indicates the IC card OS itself. This is to specify how many times the operation as the OS from the reception of the command to delivery to the application is executed.
[0019]
The flow from the activation of the IC card until the default application processes the command will be described below. Since the processing flow is the same as that shown in FIG.
When power is supplied to the IC card through either the contact or non-contact interface, the IC card OS starts up, performs communication condition selection processing, and executes OS-related initialization (including memory check, etc.) To do. It is assumed that the external terminal continues to use the interface used above during a series of processing procedures. The communication condition selection processing is ATR transmission (transmission of various information for communication) if it is a contact type, PPS processing (determination of a communication protocol defined in ISO 7816-3, etc.) This is processing of a region or the like (specified by ISO 14443-3). The external terminal transmits a command to the IC card, and when the OS of the IC card receives the command, initialization for executing an application on the OS is executed. During initialization, the OS performs a default application selection process. Here, the default application may be set differently depending on the contact type or the non-contact type.
[0020]
The OS unit determines whether or not the received command is an application selection command, and if it is an application selection command, performs an application selection process designated by the command. If it is not an application selection command, the double speed setting value is obtained from the application selected by looking at the application management table and the transmission means (contact type or non-contact type), and the processing speed is set to that value. The command is then passed to the selected application and control is transferred. Sends the processing result from the application to the external terminal and waits to receive the next command. The double speed setting is returned to the setting value of the OS itself and the above process is repeated.
[0021]
Next, an example when a data read command for a financial application is received using a contact interface will be described.
Power is supplied to the IC card through the contact interface. After the OS of the IC card is activated and OS-related initialization (memory check etc.) is executed, ATR (various information for communicating with the IC card) is transmitted to the external terminal. The initialization of the OS includes setting of its own processing speed (double speed setting) (AID = 0 in the application management table, and the contact type is set to quadruple speed because it is quadruple speed). The external terminal transmits a data read command to the IC card. Upon receiving the command, the OS of the IC card executes initialization for executing the application on the OS, and selects the financial application (AID = 1) which is the default application in the initialization.
[0022]
The OS unit determines whether the received command is not an application selection command and confirms that it is not a selection command. In this case, since the command is passed to the selected application (AID = 1), referring to the application management table, the AID is 1 and the transmission means is a contact type, so the double speed setting is multiplied by 8 and the control is transferred to the application. , Pass the command to the application.
[0023]
Since the application to which control is passed is a command to read the data and is a data read command, the corresponding data is returned to the OS as a processing result, and the OS resets its processing speed to 4 times. The OS transmits the value to the external terminal and waits for reception of the next command.
[0024]
Next, an example in which an application selection command (AID = 2 is specified) is received using a non-contact interface will be described.
Power is supplied to the IC card through a non-contact interface. After the OS of the IC card is started and OS-related initialization (including memory check etc.) is executed, ATR (information for communicating with the IC card) is transmitted to the external terminal. The initialization of the OS includes setting of its own processing speed (double speed setting) (AID = 0 in the application management table, and the contact type is set to quadruple speed because it is quadruple speed).
[0025]
The external terminal transmits an entry / exit application selection command (designated AID = 2) to the IC card. The OS of the IC card receives the command. Initialization for executing an application on the OS is executed, and a financial application (AID = 1) which is a default application is selected in the initialization.
[0026]
The OS unit determines whether the received command is an application selection command, and performs processing for selecting a designated application (AID = 2) because it is an application selection command. In this case, the command is passed to the newly selected application (AID = 2). Referring to the application management table, the AID is 2 and the transmission means is a non-contact type, so the double speed setting is doubled. Control is then transferred to the application and the command is passed to the application.
[0027]
The entry / exit application (AID = 2) analyzes the command and returns to the OS without doing anything because it is a simple selection command. The OS resets its own processing speed to 4 ×. Then, the fact that the selection command has succeeded is transmitted to the external terminal, and the reception of the next command is awaited.
[0028]
【The invention's effect】
As described above, according to the present invention, the processing speed can be set (double speed setting) depending on which application is executed according to the transmission means and communication conditions, and the execution speed and communication distance can be set according to the application and environment. (In the case of non-contact), it is possible to appropriately allocate power consumption and the like.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration example of a portable information processing apparatus according to the present invention.
FIG. 2 is a diagram illustrating an example of an application management table.
FIG. 3 is a diagram illustrating an example of a management table in the case of setting double speed by a combination of a contact / non-contact type and a communication protocol.
FIG. 4 is a diagram showing a processing flow in the OS.
FIG. 5 is a diagram illustrating an example of an application management table.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Portable information processing apparatus, 2-5 ... Information transmission means, 6 ... Identification means, 7 ... CPU, 8 ... Information storage means.

Claims (3)

A plurality of information transmitting means for communicating with an external terminal, and executes the processing by interpreting commands received via the information transmitting means, a CPU with OS portion that returns the processing result to the external terminal, signaling An identification means for detecting which information transmission means the command received through the means is received and notifying to the OS part of the CPU, a volatile memory area for providing a work area when the CPU calculates, and data are stored In a portable information processing apparatus comprising information storage means having a nonvolatile memory area to be
OS portion of the CPU may select an application that is set to the default after startup, upon receiving the command, if the application selection command analyzes the content of the received command to determine whether the application selection command the select the application specified in the command, and select the selected application if an application selection command, then, refers to the application management table of the processing speed in accordance with the application is set to be executed and information transmission means, In response to the information transmission means notified from the identification means and the selected application, a processing speed is set and a command is passed to the selected application to transfer control,
The portable information processing apparatus comprising a plurality of information transmission means, wherein the selected application analyzes the command that has been passed, executes processing, and returns the processing result to the OS unit . A plurality of contact / non-contact communication means for communicating with an external terminal, and executes the processing by interpreting commands received via the information transmitting means, the OS unit that returns a processing result to the external terminal The CPU and the command received through the contact / non-contact type information transmission means detects which information transmission means of the contact type / non-contact type and under what communication conditions is received. In a portable information processing apparatus comprising an identification means for notifying the OS section, a volatile memory area for providing a work area when the CPU performs computation, and an information storage means having a nonvolatile memory area for storing data ,
OS portion of the CPU may select an application that is set to the default after startup, upon receiving the command, if the application selection command analyzes the content of the received command to determine whether the application selection command the select the application specified in the command, and select the selected application if an application selection command, then, refers to the application management table of the processing speed according to the information transmission means and communication conditions and the application is set, In accordance with the information transmission means and communication conditions notified from the identification means and the selected application, the processing speed is set and the control is transferred by passing a command to the selected application .
The portable information processing apparatus comprising a plurality of information transmission means, wherein the selected application analyzes the command that has been passed, executes processing, and returns the processing result to the OS unit .   The portable information processing apparatus according to claim 1, wherein the plurality of information transmission units are contact type and non-contact type information transmission units.

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