JPH0236492A - Portable electronic device - Google Patents

Abstract

PURPOSE:To make the selective setting of functions possible by providing a storing means to store information to show whether the function should be made valid or not as corresponding to each of plural functions. CONSTITUTION:Function selection flags 2, 3 corresponding to the respective functions are provided in a data memory 30, and at the point of time when a card is issued, the function selection flag is set by a card issuing device according to whether the respective functions should be made valid or not. Then, in a case the IC card is used actually, it is decided whether the corresponding function should be made valid or not by referring to the function selection flag, and the function is selected. Thus, only the function necessary to a user (user of card) can be made valid and operable, and at the time of issue of the IC card, the selective setting of the function to meet the request of the user becomes possible, and in addition, it comes possible to let the issued individual IC card have a feature. Besides, the improvement or the change of the function can be easily achieved as well.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is used, for example, as a credit card in a shopping system, and has multiple functions such as a transaction function, a clock function, a calculator function, and an electronic note function. The present invention relates to a portable electronic device called an IC card, which has multiple functions and can selectively operate only the activated functions.

(Prior Art) In recent years, as a new portable data storage medium, an IC card has been developed that has a built-in IC chip that has an erasable nonvolatile memory and a control element such as a CPU that controls it. It is intended to be used for transactions, etc.

This type of IC card inputs and outputs necessary data in response to a request from an external device (such as a terminal device) by accessing a built-in memory using a built-in control element.

Furthermore, in recent years, cards have built-in batteries, are equipped with keyboards and displays, and can operate offline without being connected to a terminal device. A battery-powered multifunctional IC card has also been developed.

Now, in such a multi-functional IC card, the IC
When looking at the functions of cards, conventionally, card issuers have incorporated all the same functions at the time of issuing an IC card. Therefore, at the time of issuance of the IC card, all functions input to the IC card are enabled and ready for operation. For this reason, even functions that the user does not need may be included, making it impossible to select and set functions in accordance with the user's wishes.

Furthermore, if you want to upgrade or change the functions of an IC card after it has been issued, you have to newly input and set the functions, which is difficult to do easily.

(Problems to be Solved by the Invention) As described above, the present invention has the same function settings at the time of issuance, so it is impossible to select and set functions according to the user's wishes, This was developed to solve the problem of not being able to easily change the functions of a portable electronic device that allows users to select and set functions according to their wishes at the time of issuance, as well as to easily upgrade or change functions. The purpose is to provide equipment.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a portable electronic device that has a plurality of functions and is capable of selectively operating only an activated function among the functions, A storage means that is set in advance to correspond to a plurality of functions and stores information indicating whether or not to enable those functions, and information in this storage means indicating whether or not to enable the functions. and determining means for determining whether or not to enable the corresponding function based on the function.

(Function) For example, at the time of issuance of this device, information indicating whether or not to enable each of the multiple functions of this device is manually entered from outside the device. Store it internally.

Then, when actually using this device, the function is selected by determining whether to enable the corresponding function based on the information indicating whether to enable the function stored above. It is something.

Thereby, it is possible to enable and operate only the functions that the user (the user of the device) needs, excluding those that are unnecessary. Therefore, when issuing this device, it is possible to select and set functions according to the user's wishes, and it is possible to give each issued device its own characteristics. In addition, for example, functional improvements or changes after publication,
By rewriting the information indicating whether or not to enable the above function, it becomes possible to easily enable the function within the range of the functions of this device.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 6 shows an example of a portable electronic device according to the present invention.
For example, it shows the appearance of a multifunctional IC card used as a credit card for shopping transactions. This IC card can be used both online and offline, and has, for example, a transaction function that allows transactions with multiple transaction accounts, a clock function that displays date and time information, and at least the four arithmetic functions. It also has an electronic notebook function for registering and reading addresses, names, telephone numbers, etc.

In FIG. 6, 1 is a card body, which is made of, for example, a rectangular thin plastic plate. A predetermined portion on the surface of the card body 1 is electrically connected to an integrated circuit (IC) 2 embedded in the card body 1, and is electrically connected to an external device (not shown).
a contact section 3 for electrically communicating with a card issuing device, terminal device, etc.), a liquid crystal display section 4 for displaying input/output information, date information, time information, etc., and a keyboard 5
is provided. Further, a battery 6 for power supply is embedded within the card body 1.

The keyboard 5 has a trading account key 7 for specifying a trading account.
．． 8, 9, 10, a numeric keypad 11, an addition key 12 as four arithmetic operation keys, a subtraction key 13, a division key 14, a multiplication key 15, a decimal point key 16, an equal key 17, etc. are provided.

The transaction account key 7 specifies a first operation (transaction processing) for a first transaction account (e.g., a first credit card), and the transaction account key 8 specifies a first operation (transaction processing) for a first transaction account (e.g., a second credit card); ),
The transaction account key 9 specifies a third transaction for a third transaction account (e.g., a first cash card), and the transaction account key 10 specifies a fourth transaction for a fourth transaction account (e.g., a second cash card). It is designed to specify the work of the person.

The numeric keypad 11 is also used, for example, as an English character input key, the decimal point key 16 is also used as a clear key, and the equal key 17 is also used as a power-on key.

FIG. 5 shows the circuit configuration of the integrated circuit 2. As shown in FIG.

That is, 21 is a communication control circuit, 22 is a reset control circuit, 23 is a power supply control circuit, 24 is a battery check circuit that checks whether the voltage of the battery 6 is above a specified value, 25 is a clock control circuit, and 26 27 is an oscillator that generates a clock with a frequency of, for example, IMHz, and 27 is a CPU (central controller) that is a control unit that controls the overall
Processing unit) 28 is a program memory composed of a mask ROM etc., 29 is a program working memory, 30 is a data memory (storage means) composed of a non-volatile memory such as an EEPROM, and 31 is for timing during processing operations. 32 is a clock circuit unit that generates date information and time information; 33 is a starter that generates a clock having a frequency of, for example, 32.768 KHz; 34 is a display control circuit; and 35 is the liquid crystal display unit 4.
36 is a keyboard interface circuit as an input circuit for the keyboard 5.

Communication control circuit 21, battery check circuit 24, CPU
27, program memory 28, two memories for program working, data memory 301. The timer circuit 31, clock circuit section 32, display control circuit 34, and keyboard interface circuit 36 are connected by a data bus 37.

The communication control circuit 21 operates in online mode, and converts serial data supplied from a card issuing device or terminal device via the contact unit 3 into parallel data and outputs it to the data bus 37. The parallel data supplied from the card is converted into serial data and outputted to the card issuing device or terminal device via the contact section 3.

The reset control circuit 22 operates in the online mode, and accepts a reset signal supplied from the card issuing device or the terminal bag 2 via the contact section 3.
The PU 27 is started.

゛, When the π source control circuit 23 enters the online mode, the π source control circuit 23 switches from being driven by the battery 6 to being powered by the external power supply (from the card issuing device or terminal device to the contact section 3 after a predetermined time has elapsed).
When the external power supply voltage drops, control is performed to switch from external power supply to battery 6 drive when the external power supply voltage drops.

In the offline mode, the clock control circuit 25 stops the operation of the oscillator 26 that generates the IMHz clock when the key is in a standby state, and the CPU 27
The clock supply to the system is also stopped, resulting in a completely stopped state. In this state, when the start key 17 is turned on, the oscillator 26 is operated and the clock circuit section 32 is turned on.
A clock of 32.768 KHz outputted from the oscillator 26 is supplied to the CPU 27, and when the next key operation after turning on the start key 17 is performed, the IMHz clock outputted from the oscillator 26 is outputted from the oscillator 26.
The clock is supplied to the CPU 27.

Further, in the online mode, by supplying a reset signal from the reset control circuit 22, a clock supplied from the card issuing device or terminal device via the contact section 3 is supplied to the CPU 27.

The program memory 28 stores a transaction function program, a clock function program, a computer function program, an electronic note function program, and other programs. The CPU 27 selectively executes programs in the program memory 28 to perform processing, thereby selectively operating a transaction function, a clock function, a calculator function, an electronic note function, and the like.

The data memory 30 stores transaction account information corresponding to the first to fourth transaction accounts described above, and when the transaction account keys 7 to 10 are pressed, the corresponding transaction account information is selected, and the corresponding transaction Corresponding operations are executed based on account information.

The data memory 30 also has an area for an electronic notebook, in which data such as address, name, telephone number, etc. are written. Further, in a specific area of the data memory 30, expiration date information for determining the expiration date and password information (W# identification number) for confirming the validity of the card holder are stored in advance.

Further, the data memory 30 is provided with a flag area, and this flag area is provided with a function selection flag F1 having a format as shown in FIG. 2 and a clock flag F2 having a format as shown in FIG. ing.

The function selection flag F1 is a flag indicating whether or not to enable the transaction function, clock function, calculator function, and electronic note function. The first bit corresponds to the calculator function, and the third bit corresponds to the electronic note function. When set to "1", it is enabled (operable), and when set to "O", it is disabled (inoperable). ) is shown.

The clock flag F2 is a flag that determines the display format when the clock function is used, and the 0th bit corresponds to date information and the 1st bit corresponds to time information. And 0
If the 0th bit is "0", use the format shown in Figure 4(a), and if the 0th bit is 1, use the format shown in Figure 4(b).
If the first bit is '0', use the format shown in Figure 4(C), and if the first bit is '1', use the format shown in Figure 4(d). You can specify the format for each.

The clock circuit section 32 receives 32.7 output from the oscillator 33.
By dividing the 68KHz clock, 1sec
A frequency dividing circuit 321 that generates a clock, this frequency dividing circuit 3
By counting the clocks generated from 21,
It is composed of first and second clock circuits 322 and 323 that generate date information and time information. The first clock circuit 322 is a display clock circuit that allows the card holder to freely set and change date information and time information by operating the keyboard 5. The second clock circuit 323 is a clock circuit in which date information and time information are set, for example, when the card is issued, and the settings cannot be changed thereafter unless the validity of the operation is proven through a specific procedure.

The display control circuit 34 converts the display data supplied from the CPU 27 into a character pattern using a character generator (not shown) configured with an internal ROM, and displays the character pattern on the liquid crystal display unit 4 via the display driver 35. It has become.

Next, the operation in offline mode in such a configuration will be explained with reference to the flowchart shown in FIG. 1 as an example. First, the cardholder presses the activation key 17 in the keyboard 5 (Sl) to turn on the power. Then, the CPU 27 uses the data memory 3
Search for the first bit of the function selection flag F1 within 0.S
2) It is determined whether the first bit is 1'' (S3).

As a result of this judgment, if the first bit is "1", the CPU 27 enables the clock function and reads the date information and time information from the first clock circuit 322, thereby displaying the date information on the liquid crystal display section 4. The date information and time information are displayed alternately (S4), and the key is in standby mode (S5). At this time, the CPU 27 determines the display format of the date information and time information by referring to the clock flag F2 in the data memory 30.

As a result of the judgment in step S3, if the first bit is "0", the CPU 27 disables the clock function (
S6), and enters a key manual standby state (S5).

When the cardholder presses the transaction account keys 7 to 10 on the keyboard 5 in the key manual standby state (S7),
The CPU 27 selects the function selection flag F in the data memory 30.
The 0th bit of 1 is searched (S8), and it is determined whether the 0th bit is "1" (S9). As a result of this judgment, if the 0th bit is 21",
The CPU 27 enables the transaction function and enables transaction processing corresponding to the pressed transaction account key (SIO).

As a result of the judgment in step S9, if the Oth bit is “0°”, the CPU 27 disables the transaction function (
Sll), the key is in standby state (S5).

In addition, when the cardholder presses the numeric keypad 11 in the keyboard 5 in the key manual standby state (S12)
, the CPU 27 searches for the second bit of the function selection flag F1 in the data memory 30.
Determine whether the bit is “1” (S1
4). As a result of this determination, if the second bit is "1", the CPU 27 enables the computer function and enables operation of the computer function (S15).

As a result of the determination in step 514, if the second bit is "0", the CPU 27 disables the computer function (S16) and enters a key manual standby state (S5).

Also, when the cardholder presses the addition key 12 in the keyboard 5 in the key manual standby state (S17)
, the CPU 27 searches the third bit of the function selection flag Fl in the data memory 30 (←518), and determines whether the third bit is "1" (S19).
). As a result of this judgment, if the third bit is "1", the CPU 27 enables the electronic note function and enables the operation of the electronic note function (S20).

As a result of the determination in step S19, if the third bit is "0", the CPU 27 disables the electronic notebook a function (S21) and enters a key manual standby state (S5).

Furthermore, when the cardholder presses the clear key 16 in the keyboard 5 in the key manual standby state (S22)
, the power is turned off.

Next, a method for setting or changing the function selection flag F and the clock flag F2 will be explained.

Second flag F1. When setting or changing F2, an operation to prove the validity of the operation is performed in advance or at the same time in order to prevent unauthorized operation due to malicious intent. in particular,
For example, settings or changes can only be made if the card issuer's security number is verified correctly. As another example, a cryptographic code is generated using a certain cryptographic algorithm based on these flag information, and the cryptographic code is provided to the IC card. For IC cards, a calculation is added to the flag information manually generated using the same algorithm.
If the same encryption code is generated, it is determined that the operator is the correct operator, and the flags Fl and F2 can be set or changed.

It should be noted that setting and changing of these flags F, F2 is performed by the card issuer using the card issuing device.

In this way, for example, a function selection flag corresponding to each function is provided in the data memory, and the card issuing device selects each function at the time of card issuance. Based on whether or not to enable the
Set this feature selection flag. When the IC card is actually used, the function selection flag is referred to to determine whether or not to enable the corresponding function, and to select the function.

Thereby, it is possible to enable and operate only the functions that the user (card user) needs, excluding those that are unnecessary. Therefore, when issuing an IC card, it is possible to select or choose functions according to the user's wishes.
Moreover, it is possible to give each issued IC card its own characteristics. Further, for example, function enhancement or function change after issuance can be easily performed within the range of functions possessed by the IC card by rewriting the settings of the function selection flag.

In the embodiment described above, it is determined whether or not to enable the transaction function based on the function selection flag, but this transaction function may be always activated and enabled.

Further, in the above embodiments, an IC card is used as an example of a portable electronic device, but the present invention is not limited to a card-shaped device, and may be, for example, a block-shaped or pencil-shaped device. Furthermore, the hardware configuration of the portable electronic device can be modified in various ways without departing from the spirit of the invention.

[Effects of the Invention] As detailed above, according to the present invention, it is possible to select and set functions according to the user's wishes at the time of issuance, and the portable electronic device can easily upgrade or change functions. can be provided.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, and FIG. 1 is a flowchart explaining the operation, FIG. 2 is a diagram showing the format of the function selection flag, and FIG. 3 is a diagram showing the format of the clock flag. , Fig. 4 is a diagram showing the display format of date information and time information, Fig. 5 is a block diagram showing the circuit configuration of the integrated circuit in the IC card, and Fig. 6 is a diagram showing the display format of date information and time information.
FIG. 3 is a plan view showing the configuration of a C card. 2...Integrated circuit, 3...Contact section, 4...Liquid crystal display section, 5...Keyboard, 6...Battery, 21 ...Communication control circuit, 27...CPU (control unit, judgment means)
28...Program memory, 30...
・Data memory (storage means) Fl...Function selection flag. Applicant's agent Patent attorney Takehiko Suzue Figure 2 Figure 3 Figure Figure Figure

Claims (1)

[Scope of Claims] A portable electronic device that has a plurality of functions and is capable of selectively operating only an activated function among the functions, the device being configured in advance to correspond to each of the plurality of functions. , a storage means that stores information indicating whether to enable those functions, and whether or not to enable the corresponding function based on information indicating whether to enable the functions in this storage means. 1. A portable electronic device characterized by comprising: determination means for determining whether