JPH0981708A - IC card, IC card reading device, and IC card writing device - Google Patents

Abstract

The present invention solves the problem that a waiting time is long because the frequency of an operation clock of an IC card is identified. SOLUTION: IC card reading / writing device 1
Are provided with identification sensor units 4A and 5A for identifying the type (frequency of the operation clock) of the IC card 3 at the entrances of the card insertion ports 4 and 5. An identifier for identifying the type of the IC card 3 is provided on the surface of the IC card 3. Identification sensor unit 4A, 5A
Consists of a pair of photo interrupters, and the IC card 3
When the identifier of No. 2 passes, the light is not reflected only at that portion, and the output of the photo interrupter is turned off. Therefore,
By monitoring the output from the photo interrupter, I
The type of the IC card 3 can be identified by detecting the presence or absence of the C card 3 identifier.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card, an IC card reading device, and an IC card writing device configured to identify an IC card for reading / writing data at a predetermined clock frequency.

[0002]

2. Description of the Related Art Memory (EE) for storing personal data
A management system that manages personal data by distributing an IC card having a built-in PROM (PROM) and a one-chip microcomputer for controlling reading and writing of data to each person is being developed. For example, IC card reading /
By installing a writing device, it is possible to store the time of arrival and departure of people at multiple offices, the date, etc. in the IC card, so that each person can carry an IC card with him and the IC card installed in each office. By simply inserting an IC card into the reading / writing device, it is possible to manage the data such as the office work time, leaving time, and work days of each individual.

In the IC card reading / writing device, when the IC card is inserted, a predetermined operation clock and power are supplied through a terminal provided on the surface of the IC card, and data reading / writing is performed. To do.
In the IC card used in this way, the clock frequency for transmitting and receiving data is specified. Therefore, the control device of the IC card reading / writing device is configured to perform communication with a specified operation clock.

Further, the shape and each dimension of the IC card are determined by the ISO standard, but conventionally, plural kinds of IC cards having different operation clocks have been used. Although this operation clock is also standardized by the ISO standard, it is desired that any IC card can be used in the IC card reading / writing device.

Therefore, in the conventional IC card reading / writing device, a circuit board having a plurality of oscillation circuits for generating respective operation clocks of the IC card is provided so as to correspond to a plurality of types of IC cards having different operation clocks. Has become. Therefore, when the IC card is inserted into the IC card reading / writing device, a predetermined operation clock is transmitted to the IC card, and as a result, the presence or absence of a response from the IC card is confirmed. When there is no response from the IC card, it is determined that the operation clocks do not match, an operation clock having another frequency is transmitted to the IC card, and the frequency of the operation clock is obtained until the response from the IC card is obtained. Switch.

[0006]

However, in the conventional IC card reading / writing apparatus configured as described above, the operation clock is determined after the IC card is inserted into the apparatus, and the apparatus is also used. If the operating clock on the side does not match the operating clock on the IC card, I
Since there is no response from the C card, it is necessary to switch the frequency of the operating clock until they match.

Therefore, it may take a long waiting time until the IC card is inserted into the device and the data is read or written. If the frequency of the operation clock increases, the IC card is received correspondingly. For example, many employees arrive in a row during the morning work hours, so those who arrive later must wait until the former person receives the IC card, When there are a number of people in line, the waiting time becomes longer by the number of people.

Further, if the time from the insertion of one IC card to the ejection is long, the power consumption of the device increases, and in the device driven by the battery, the power is insufficient during the operation. There is a risk that Therefore, an object of the present invention is to provide an IC card, an IC card reading device, and an IC card writing device that solve the above problems.

[0009]

In order to solve the above problems, the present invention has the following features. Claim 1
According to the invention, in an IC card having a memory in which data is recorded and a terminal to which data is input to the memory at an operation clock of a predetermined frequency, an identifier for identifying the frequency of the operation clock is provided on the surface. It is characterized by that.

Therefore, according to the first aspect, since the identifier for identifying the frequency of the operation clock is provided on the surface of the IC card, the frequency of the operation clock can be identified in the process of inserting the IC card. Therefore, it is not necessary to determine the frequency of the operation clock by transmitting the operation clock from the device side as in the conventional case.

Further, the invention of claim 2 has an IC card having a card insertion section into which an IC card is inserted and a data reading section for reading data stored in the memory of the IC card inserted into the card insertion section. In the reading device, an identifier detecting means for detecting an identifier provided on the IC card is provided at the entrance of the card insertion portion.

Therefore, according to the second aspect, since the identifier of the IC card can be detected to identify the frequency of the operation clock of the IC card, the frequency of the operation clock is set in the process of inserting the IC card. It becomes possible to read the data stored in the memory of the IC card immediately after the IC card is inserted, and it is possible to shorten the waiting time from the insertion of the IC card to the ejection. .

According to the invention of claim 3, there is provided a card insertion portion into which the IC card is inserted, and a data writing portion for storing data in the memory of the IC card inserted into the card insertion portion at an operation clock of a predetermined frequency. In an IC card writing device having the above, the I
It is characterized in that an identifier detecting means for detecting an identifier provided on the C card is provided.

Therefore, according to the third aspect, since the identifier of the IC card can be detected to identify the frequency of the operation clock of the IC card, the frequency of the operation clock is set in the process of inserting the IC card. As soon as the IC card is inserted, data can be stored in the memory of the IC card at an operating clock of a predetermined frequency, and the waiting time from the insertion of the IC card to the ejection is shortened. can do.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 shows the IC card reading
FIG. 2 is a perspective view of the writing device, and FIG. 2 is a block diagram of the IC card reading / writing device.

The IC card reading / writing device 1 is
When viewed from the side, it is formed in a substantially triangular shape, and the front surface 1b of the housing 1a is inclined so that the card insertion operation can be performed easily. At the center of the front surface 1b, a display 2 composed of a liquid crystal display is arranged, and card insertion ports 4 and 5 into which an IC card 3 is inserted are arranged on both left and right sides of the display 2.

In the IC card reading / writing device 1, when the IC card 3 is inserted as described later, the IC
A predetermined operation clock and power are supplied through a terminal provided on the surface of the card 3, and data is read and written. Since the IC card 3 defines a clock frequency for transmitting and receiving data, the IC card reading / writing device 1 is configured to communicate with the IC card 3 at a specified operation clock. There is.

A plurality of types of IC cards 3 having different operation clocks are used. Therefore, the IC card reading / writing device 1 can generate a plurality of operation clocks corresponding to a plurality of types of IC cards 3 having different operation clocks.

Further, identification sensor units (identifier detection means) 4A, 5A for identifying the type of the IC card 3 (frequency of operation clock), which will be described later, are provided at the entrances of the card insertion openings 4, 5. ing. The circuit board of the IC card reading / writing device 1 includes a control circuit 6, a power supply 7, an SRAM 8 and an EEPROM (Electrically Erasabi).
e Programmable Read Only Memory) 9, display driver 1
0, a reset control unit 11, a power supply control unit 12, a communication control unit 13, a clock control unit 14, an oscillator 15, an A / D converter 16, a motor drive unit 28A for driving a loading mechanism 28 described later, and the like. There is.

The control circuit 6 is a device that controls the entire apparatus and is composed of a one-chip microcomputer. The power supply 7 supplies power to each device in the apparatus 1 and also supplies power to the IC card 3 inserted in the card insertion ports 4 and 5. The SRAM 8 is a static memory,
When the control circuit 6 performs control, data is temporarily stored. The EEPROM 9 is a non-volatile memory that can be electrically written, and stores a control program for controlling the control circuit 6 and various data. The control program includes an operation clock identification program for identifying the frequency of the operation clock of the IC card 3 based on the identification data of the IC card 3 detected by the identification sensor units 4A and 5A, and an identification result of the IC card 3. Based on the operation clock of the communication control unit 13, the IC card 3
A communication speed change program for changing the communication speed to match the operation clock of is registered.

The display drive section 10 displays a message on the display 2 and is also used as an area for passing display data from the control circuit 6. The reset control unit 11 is a control unit that inputs a reset pulse to the IC card 3, and the IC card 3 starts its operation when the reset pulse is input. Further, the power supply control unit 12
The power supply to the C card 3 is controlled, and the IC card 3
The power supply is not shut off during communication with, and the power supply is controlled so as to be shut off when the IC card 3 is ejected.

The communication control unit 13 is in communication with the IC card 3, and transmits and receives transmission data such as attendance time or leaving time. Since the IC card 3 is used for both transmission and reception, the communication control unit 13 switches the IC card 3 between transmission and reception. Therefore, when the transmission / reception switching signal a is output from the control circuit 6, the communication control unit 13 switches the communication mode for the IC card 3 to transmission or reception. Therefore, the communication control unit 13 supplies the transmission data b to the IC card 3 by supplying the transmission / reception switching signal a.
Or the received data b from the IC card 3 is received to read / write data from / to the IC card 3.

The clock controller 14 controls the clock pulse output from the oscillator 15 by the control signal from the control circuit 6. Further, the control circuit 6 detects the presence or absence of the identifier 3b provided on the front surface 3a of the IC card 3 by the identification sensor units 4A and 5A input via the A / D converter 16, as described later, and detects the IC card. The frequency of the operation clock of 3 is identified.

FIG. 3 is a block diagram showing the configuration of the IC card 3. The IC card 3 has a CPU 17 composed of a one-chip microcomputer and an EEPROM 18 inside. Further, on the surface of the IC card 3, external terminals are provided which are connected when the IC card 3 is inserted into the card insertion ports 4 and 5 of the IC card reading / writing device 1. In this embodiment, the power supply terminal (Vcc) 19, the reset terminal (RST) 20, the clock terminal (CLK) 21, and the ground terminal (GND) 2
2, power supply terminal (Vpp) 23, I / O interface (I
/ O) 24 and other external terminals are provided on the IC card 3.

When the IC card 3 having the above structure is inserted into one of the card insertion ports 4 and 5, the power supply terminal (Vcc) 1
9 is connected to the power control unit 12 to supply power to the CPU 17, and the reset terminal (RST) 20 is connected to the reset control unit 11. At the same time, the clock terminal (CLK) 21 is connected to the clock control unit 14 and receives a clock pulse, and the I / O interface (I / O)
O) 24 is connected to the communication control unit 13 and receives the transmission data such as attendance time or leaving time output from the control circuit 6. Therefore, the transmission data transmitted from the communication control unit 13 is supplied to the CPU 17 via the I / O interface (I / O) 24 and stored in the EEPROM 18.

FIG. 4 is a plan view of the IC card 3 of the first embodiment. On the front surface 3a of the IC card 3, the terminals 19 to
24 and an identifier 3b for identifying the type (frequency of the operation clock) of the IC card 3 are provided by printing or the like. In this identifier 3b, a non-reflective portion is formed with the last "O" portion as a black circle when printing the company name "TOKICO".

The identifier 3b is an identification area 3c, 3d (shown by a broken line) facing the identification sensor units 4A, 5A in the process of inserting the IC card 3 into the card insertion ports 4, 5.
It is provided in. In this embodiment, the identifier 3b is provided at the rear of the identification areas 3c and 3d in the card insertion direction. Therefore, when the IC card 3 is inserted into the card insertion ports 4 and 5, the presence or absence of the identifier 3b is detected by the identification sensor units 4A and 5A.

In this way, the identification sensor units 4A, 5
Since the presence or absence of the identifier 3b is optically detected by A,
Although the identifier 3b is formed as a non-reflective portion such as a black circle that does not reflect light, a seal as the identifier 3b may be attached instead of printing.

The IC card 3 is created so that the type can be discriminated depending on the presence or absence of the identifier 3b. For example, if there is no identifier 3b, it means that the IC card 3 is not a valid IC card 3 and the identifier 3b is 1 When the number is 3, the frequency is 3.5795 MHz, and when the number of the identifiers 3b is 2, the frequency is 4.9152 MHz.

FIG. 5 is a vertical sectional view showing the mounting state of the identification sensor units 4A and 5A, and FIG. 6 is the identification sensor unit 4
It is a front view which shows the attachment state of A and 5A. Since the identification sensor unit 4A and the identification sensor unit 5A have the same configuration, one identification sensor unit 4A will be described below, and the description of the other identification sensor unit 5A will be omitted.

The identification sensor unit 4A is provided on the back side of the card insertion slot 4 and is held between the front surface 1b of the housing 1a and the reading / writing section 26 provided inside the housing 1a. The reading / writing unit 26 is supported by a bracket 1c fixed to the housing 1a.

The read / write unit 26 is an IC
A card detection sensor 27 including an optical sensor for detecting that the card 3 has been inserted, and the IC card 3 is pulled in when the IC card 3 is inserted from the card insertion port 4, and the IC card 3 is inserted after the reading / writing process is completed. It has a loading mechanism 28 for ejecting, an electrode 29 for transmitting and receiving data through the terminals 19 to 24 of the inserted IC card 3, and the like.

The loading mechanism 28 has a card insertion slot 4
Rubber roller 28 for holding the IC card 3 inserted from
The IC card 3 is moved by rotating a and 28b. The loading mechanism 28 has a loading motor (not shown) for rotationally driving the rubber rollers 28a and 28b.

The identification sensor unit 4A comprises a pair of photo interrupters 30 and 31. The photo interrupters 30 and 31 include light emitting elements (LEDs) 30a and 31a that emit light toward the IC card 3, and phototransistors 30b and 31b that output a signal when the light reflected by the IC card 3 is received. , 31c.

Then, a pair of photo interrupters 30,
Reference numeral 31 is attached so as to face the identifier 3b above the identifier 3b of the IC card 3. Also,
Phototransistor 3 of photointerrupter 30, 31
0b and 31b cannot receive the reflected light when the IC card 3 is not present, and when the IC card 3 is inserted into the card insertion slot 4, the light reflected by the IC card 3 is received.

Therefore, when the identifier 3b formed as a non-reflecting portion passes below the photo interrupters 30 and 31, light is not reflected only in that portion, and the outputs of the phototransistors 30b and 31b are turned off. Therefore, the phototransistor 30 of the photointerrupter 30, 31 is
By monitoring the outputs from b and 31b, the presence or absence of the identifier 3b of the IC card 3 can be detected to identify the type of the IC card 3.

Here, the processing executed by the control circuit 6 will be described with reference to the flowchart of FIG. Control circuit 6
When the power switch (not shown) is turned on,
The processing shown in FIG. 7 is executed to communicate with the IC card 3 inserted in one of the card insertion ports 4 and 5.

When the power switch (not shown) of the device 1 is turned on, the front end of the IC card 3 is read / written by the card detection sensor 27 in step S1 (hereinafter "step" is omitted). It is determined whether or not it has been inserted into. When the detection signal of the IC card 3 is output from the card detection sensor 27, the process proceeds to S2, in which the loading motor (not shown) of the loading mechanism 28 is normally rotated to rotate the rubber rollers 28a and 28b in the card insertion direction.

As a result, the IC card 3 inserted in the card insertion ports 4 and 5 is drawn into the reading / writing unit 26, passes below the photo interrupters 30 and 31, and enters the reading / writing unit 26. The electrode 29 is mounted and contacts the terminals 19 to 24 of the IC card 3. In this card insertion process, the front surface 3a of the IC card 3
In the identification areas 3c and 3d of the photo interrupters 30 and 3,
The light emitted from the light emitting elements (LEDs) 30a and 31a of No. 1 is irradiated, and the reflected light is emitted from the phototransistor 30.
It is incident on b and 31b.

Subsequently, in S3, the photo interrupter 30, which is converted into a digital signal by the A / D converter 16,
The outputs of the phototransistors 30b and 31b of 31 are read and the number of identifiers 3b of the IC card 3 is counted. When the number of the identifiers 3b detected in the next S4 is one, the process proceeds to S5 and the frequency of the operation clock is set to 3.5795.
Set to MHZ. However, when the number of the detected identifiers 3b is not one in S4, the process proceeds to S6, and it is determined whether or not the number of the detected identifiers 3b is two. And
When the number of detected identifiers 3b is two, the process proceeds to S7 and the frequency of the operation clock is set to 4.9152 MHz.

As described above, in the process of inserting the IC card 3 into the apparatus 1, the photo interrupters 30 and 31 are used to IC
The identifier 3b of the card 3 is detected and the frequency corresponding to the operation clock of the IC card 3 is automatically set. Therefore, when the IC card 3 is attached to the reading / writing unit 26, the frequency of the operation clock corresponding to the IC card 3 has already been set. Therefore, since it is not necessary to set the operation clock after the IC card 3 is attached, the waiting time can be shortened accordingly.

After the loading motor of the loading mechanism 28 is stopped in the next S8, the process proceeds to S9, in which the EEPRO of the IC card 3 is passed through the terminals 19 to 24 of the IC card 3.
Write data (date, time to work, time to leave, etc.) in M18 or EEPRO of IC card 3
Read the data stored in M18.

Thereafter, in S10, the loading motor is rotated in the reverse direction to rotate the rubber rollers 28a and 28b in the eject direction. The IC card 3 is a rubber roller 28.
It moves in the eject direction by the reverse rotation of a and 28b.
With this, the rear end of the IC card 3 is the photo interrupter 3
It passes below 0 and 31 and is ejected from the card insertion slot 4. At that time, when the photo interrupters 30 and 31 detect the identifier 3b of the IC card 3 (S1
1) Stop the loading motor (S12).

With this, the reading / writing process of the IC card 3 is completed, and the IC card 3 can be pulled out from the apparatus 1. In S6, if the identifier 3b of the IC card 3 is not detected and the identifier 3b is zero, I
Since the inserting direction of the C card 3 is wrong or the IC card is not a valid IC card, the process moves to S13 and the display 2 displays a card error. Thereafter, in S14, the loading motor of the loading mechanism 28 is rotated in the reverse direction to rotate the rubber rollers 28a and 28b in the eject direction. After ejecting the IC card 3 in this way, S
Moving to 12, the loading motor is stopped.

As described above, since the frequency of the operation clock of the IC card 3 can be automatically set by the inserting operation of the IC card 3, the waiting time from the insertion of the IC card 3 to the ejection is correspondingly. Can be shortened. Therefore, it is possible to improve the efficiency of the reading / writing process of the IC card 3. For example, even when a large number of employees continuously arrive during the morning work hours, the waiting time is shortened and a long time is required as in the past. No discomfort due to waiting.

Although the identifier 3b of the IC card 3 is detected by the photo interrupters 30 and 31 in the above embodiment, the invention is not limited to this. For example, the identifier 3b includes a magnetized seal or magnetic metal powder. Of course, it may be formed by printing with ink, and the type of the IC card 3 may be identified by detecting the presence or absence of magnetism using a magnetic sensor.

FIG. 8 shows an IC card 4 according to the second embodiment of the present invention.
1 is a plan view of FIG. On the front surface 41a of the IC card 41,
Two types of identifiers 42 and 43 are formed by printing. The identifiers 42 and 43 are first and second identification areas 41b and 41c formed in parallel with the insertion direction of the IC card 41, respectively.
The first and second identification areas 41b and 41c are provided in (shown by broken lines), and the photo interrupters 30 and 3 described above are provided.
It is provided so as to pass below 1.

The first identifier 42 is formed by an arrow-shaped gradation (gradation: perceptual density change) indicating the insertion direction. That is, the first identifier 42 is provided so that the intensity of the reflected light changes in a stepwise manner due to a gradual change in shading (indicated by hatching in FIG. 8).

The second identifier 43 is a black-printed company name. It is possible to visually judge whether the IC card 41 is legitimate, and when only the second identification area 41c is viewed, the characters of the company name are It works as a barcode. FIG. 9 is a waveform diagram showing changes in the outputs of the photo interrupters 30 and 31 when the IC card 41 is inserted.

When the IC card 41 is inserted from the card insertion slot 4 and the identifiers 42 and 43 pass, the phototransistor 30b of the photointerrupter 30 receives the reflected light reflected by the gradation of the first identifier 42, Phototransistor 31 of photointerrupter 31
b receives the reflected light reflected by the barcode of the second identifier 43. Therefore, the output from the phototransistor 30b has a stepwise waveform that increases stepwise as shown in FIG. 9A, and the output from the phototransistor 31b has pulses at intervals according to the company name as shown in FIG. 9B. Become a wave.

FIG. 10 shows the second process executed by the control circuit 6.
It is a flow chart of an example. When the power switch (not shown) is turned on, the control circuit 6 executes the process shown in FIG. 7 to communicate with the IC card 41 inserted into one of the card insertion ports 4 and 5.

When the power switch (not shown) of the device 1 is turned on, in S21, the card detection sensor 2
7, it is determined whether or not the front end of the IC card 41 has been inserted into the reading / writing unit 26. When the detection signal of the IC card 41 is output from the card detection sensor 27, S
22, the loading motor (not shown) of the loading mechanism 28 is rotated forward to rotate the rubber rollers 28a, 28b.
Drive in the card insertion direction.

As a result, the IC card 41 inserted into the card insertion ports 4 and 5 is drawn into the reading / writing unit 26, passes below the photo interrupters 30 and 31, and enters the reading / writing unit 26. Installed,
The electrode 29 contacts the terminals 19 to 24 of the IC card 41. During this card insertion process, the light emitting elements (LEDs) 30a and 31a of the photo interrupters 30 and 31 are provided in the identification areas 41c and 41d on the front surface 41a of the IC card 41.
The light emitted from is emitted, and the reflected light is incident on the phototransistors 30b and 31b.

Subsequently, in S23, the photo interrupter 31 converted into a digital signal by the A / D converter 16 is executed.
IC reads the output from the phototransistor 31b
The company name barcode, which is the second identifier 43 provided on the card 41, is identified. If the company name barcode detected by this photo interrupter 31 is valid, S
In step 24, the output from the phototransistor 30b of the photointerrupter 30 converted into a digital signal by the A / D converter 16 is read and the gradation of the first identifier 42 provided in the IC card 41 is identified.

In step S24, a stepwise output waveform corresponding to the gradation of the read gradation reflected light is obtained, and in step S25, the stepwise output waveform is divided into preset upper and lower limit values. It is determined whether it is within the range. For example, in S25, when the output waveform of the photo interrupter 30 is within the range between the upper limit value and the lower limit value as shown in FIG. 11, the process proceeds to S26 and the frequency of the operation clock is set to 3.5795 MHz. . However, if the output waveform of the phototransistor 30b is not within the range, the process proceeds to S27 and the frequency of the operation clock is set to 4.9152 MHz.

As described above, when the IC card 41 is inserted into the device 1, the I
The identifiers 32 and 43 of the C card 41 are detected and the frequency corresponding to the operation clock of the IC card 41 is automatically set. Therefore, when the IC card 41 is attached to the reading / writing unit 26, the frequency of the operation clock corresponding to the IC card 41 is set,
It is not necessary to set the operation clock after the IC card 41 is mounted.

After the loading motor is stopped in the next S28, the process proceeds to S29, in which terminals 19 to 2 of the IC card 41 are connected.
The data (date, attendance time, leaving time, etc.) is written in the EEPROM 18 of the IC card 41 via 4 or the data stored in the EEPROM 18 of the IC card 41 is read.

Thereafter, in S30, the loading mechanism 28
Reverse the loading motor of the rubber roller 28
The a and 28b are rotationally driven in the eject direction. The IC card 41 moves in the eject direction by the reverse rotation of the rubber rollers 28a and 28b. As a result, the rear end of the IC card 41 passes below the photo interrupters 30 and 31 and is ejected from the card insertion slot 4. At that time, the outputs from the photo interrupters 30 and 31 are read in S31.
Then, when the output waveforms in which the identifiers 42 and 43 of the IC card 41 change in the direction opposite to that at the time of insertion are obtained by the photo interrupters 30 and 31 (S32), the loading motor is stopped (S33).

With this, the reading / writing process of the IC card 41 is completed, and the IC card 41 can be pulled out from the apparatus 1. Incidentally, in S23, the IC card 41
The second identifier 43 of the photo interrupter 3 is not detected
If the output of 1 is zero or pulse waves with different intervals are detected, the IC card 41 is inserted in the wrong direction or is not a valid IC card.
The process moves to 4 and the display 2 displays a card error. Then, in S35, the loading motor is rotated in the reverse direction and the IC
After ejecting the card 41, the process proceeds to S33 to stop the loading motor.

As described above, since the frequency of the operation clock of the IC card 41 can be automatically set by the insertion operation of the IC card 41, the waiting time from the insertion of the IC card 41 to the ejection is correspondingly. Can be shortened. Further, when identifying the company name bar code, the company name barcode may be identified by the time when the signal level is turned on or the number of times the signal level is turned on.

In the above embodiment, when the IC card 3 is inserted, the IC can read or write data.
Although the card reading / writing device 1 has been described as an example, the present invention is not limited to this, and for example, an IC card reading device that only reads data when the IC card 3 is inserted,
Alternatively, it can be applied to an IC card writing device that only writes data when the IC card 3 is inserted.

In the above embodiment, the photo interrupter is used to optically detect and identify the IC card identifier. However, the present invention is not limited to this, and an image sensor may be used instead of the photo interrupter. Good. In this case, the type of IC card can be identified by comparing the image output from the image sensor with a preset reference image.

[0063]

As described above, according to the first aspect, since the identifier for identifying the frequency of the operation clock is provided on the surface of the IC card, the operation clock is transmitted from the device side as in the conventional case. Since it is not necessary to determine the frequency of the operating clock by doing so, the frequency of the operating clock can be determined in the process of inserting the IC card, and the waiting time from the insertion of the IC card to the ejection is shortened. can do.

According to the second aspect of the invention, the frequency of the operation clock of the IC card can be identified by detecting the identifier of the IC card. Therefore, the frequency of the operation clock is set in the process of inserting the IC card. It becomes possible to read the data stored in the memory of the IC card immediately after the IC card is inserted, and it is possible to shorten the waiting time from the insertion of the IC card to the ejection. .

According to the third aspect of the present invention, the frequency of the operating clock of the IC card can be identified by detecting the identifier of the IC card. Therefore, the frequency of the operating clock is set in the process of inserting the IC card. As soon as the IC card is inserted, data can be stored in the memory of the IC card at an operating clock of a predetermined frequency, and the waiting time from the insertion of the IC card to the ejection is shortened. can do.

[Brief description of drawings]

FIG. 1 is a perspective view of an IC card reading / writing device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of an IC card reading / writing device.

FIG. 3 is a diagram illustrating a configuration of an IC card.

FIG. 4 is a plan view of the IC card according to the first embodiment.

FIG. 5 is a vertical cross-sectional view showing an attached state of an identification sensor unit.

FIG. 6 is a front view showing a mounting state of an identification sensor unit.

FIG. 7 is a flowchart illustrating a control process executed by the control circuit for the IC card according to the first embodiment.

FIG. 8 is a plan view of an IC card according to a second embodiment.

FIG. 9 is a waveform diagram showing changes in the output of the photo interrupter when the IC card of the second embodiment is inserted.

FIG. 10 is a flowchart illustrating a control process executed by the control circuit for the IC card according to the second embodiment.

FIG. 11 is a waveform diagram showing an upper limit value and a lower limit value for discriminating the output change of the photo interrupter when the gradation of the IC card of the second embodiment is detected.

[Explanation of symbols]

 1,41 IC card reading / writing device 2 Display device 3,41 IC card 3b, 42, 43 Identifier 3c, 3d, 41c, 41d Identification area 4,5 Card insertion slot 4A, 5A Identification sensor unit 6 Control circuit 26 Reading / reading Writing unit 27 Card detection sensor 28 Loading mechanism 29 Electrode 30, 31 Photo interrupter

Claims (3)

[Claims] 1. An IC card having a memory in which data is recorded and a terminal to which data is input to the memory at an operating clock of a predetermined frequency, wherein an identifier for identifying the frequency of the operating clock is provided on the surface. An IC card characterized by that. 2. An IC card reading device having a card insertion section into which an IC card is inserted and a data reading section for reading data stored in a memory of the IC card inserted into the card insertion section, An IC card reading device, characterized in that an identifier detecting means for detecting an identifier provided on the IC card is provided at the entrance of the unit. 3. An IC card writing device comprising: a card insertion section into which an IC card is inserted; and a data writing section for storing data at an operating clock of a predetermined frequency in a memory of the IC card inserted into the card insertion section, An IC card writing device, characterized in that an identifier detecting means for detecting an identifier provided on the IC card is provided at the entrance of the card insertion portion.