JPS6116385A - Ic card and method and device for processing it - Google Patents

Abstract

PURPOSE:To make a system highly functional by transmitting and receiving an electric power, a clock signal, and data between a processor and an IC card magnetically without contacting. CONSTITUTION:A card processor 1 is provided with a plane coil 19 for power supply, a coil 14 for data output, and a converting element 16 for data input, and an IC card 2 is provided with a plane coil 22 for power reception, a converting element 25 for data input, and a plane coil 28 for data output. The electric power and the clock signal are supplied from the card processor 1 to the IC card 2 magnetically by the plane coil 19 for power supply and the plane coil 22 for power reception, and data is transmitted and received between them by the coil 14 for data output, the converting element 25 for data input, the converting element 16 for data input, and the plane coil 28 for data output.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a microcombinator, a so-called IC card having a built-in electronic circuit including memory (particularly non-volatile memory), and a device for exchanging data with the IC card.
Regarding the method.

[Background technology]

For example, in recent years, IC cards equipped with a semiconductor integrated circuit (10) have come to be used instead of magnetic cards commonly used in banks and the like. In order to exchange data between the IC card and the card processing device, a method of electrically connecting the IC card and the card processing device using a contact method is usually adopted. IC in IC card due to fear
Data transmission between the IC and the card processing device and supply of power and clock signals to the IC are performed by actually flowing current through the contacts.

However, this method requires the contact electrodes to be exposed on the card surface, and has the disadvantage that dust may adhere to the contacts, the contacts may be damaged, resulting in poor contact, or they may pick up static electricity, causing failures. In other words, it was contaminated! Damaged or damaged contacts cannot transmit signals reliably, which prevents the normal operation of the XC card. υ In addition, short-circuits between contact electrodes due to impurities can cause IC card malfunctions. Also see what happens. If an unexpected high voltage such as static electricity is applied, the IC inside the card will be destroyed and the card will be damaged.
There are problems such as damage to its own functions and loss of recorded data.

Therefore, in place of this contact method, several 1IC cars F and their processing devices using a non-contact method have already been proposed.

However, all of these methods are functionally insufficient compared to the contact method described above.In other words, in that method, information stored in advance on an IC card is output to a card processing device. It is limited to one-way transmission, so to speak; other methods reflect radio waves of a predetermined frequency emitted from the card processing device according to parameters set for each card, and the information held by the IC card is also fixed. Therefore, it can only have limited functions.

Regarding the power source, either solar cells are used or only the power supply is provided through contact. In the case of solar type, pond, IC
Although the power consumed within the card can be obtained, the lock signal required for combinator operation cannot be exchanged with the card processing device, so higher functionality is impossible.
Adopting the contact method, even if it is only for the power supply circuit, is problematic.

Therefore, it is desired to provide an IC card processing method that has the same function as the contact method and eliminates the problem of contact length. [Object of the Invention] The present invention has been made in consideration of the above points, An object of the present invention is to provide an IC card processing method which is a contact type and has the same functions as the contact type.

[Summary of the invention]

To achieve this objective, the present invention utilizes a clock frequency magnetic signal to transmit the clock signal to the IC card and the lightning 1
In addition to supplying power, a magnetic signal for data transmission and reception is also used to perform two-way data transmission between the IC card and the card processing device.

This has made it possible to process IC cards in a non-contact manner while providing the same high functionality as a contact type.

〔Example〕

The present invention will now be explained in detail with reference to the accompanying drawings.

In FIG. 1, / is a card processing device, which is configured to be able to send and receive magnetic signals to and from an IC card λ.

First, the configuration of the card processing device will be explained, and then the configuration of the IC card processing device will be explained.

The card processing device / transmits and receives data in cooperation with the processing circuit 13 based on the clock signal from the clock signal generator / 7 by the control unit //. The data to be sent is amplified by the output amplifier 13 and sent as a magnetic signal to the IC card via the data output coil /.The magnetic signal from the IC card λ is detected and input by the data input conversion element /l. The signal is amplified by an amplifier 15 and then received.

On the other hand, the output of the clock signal generator 17 is sent as a magnetic signal to the IC card λ via the RF oscillator/za and the PC supply planar coil/q.

On the other hand, the IC card λ includes a power reception planar coil U, a data input conversion element Δ, and a data output planar coil unit J.
The card processing device is configured to be able to send and receive magnetic letters to and from the card processing device. The plane coil U for receiving the current ξ is connected to the power supply circuit J and the clock signal extraction circuit 29, and the i source circuit power is connected to the direct current converting circuit Ja.
A power supply voltage P is generated to be applied to each element in the IC card λ, and a voltage necessary for data writing is also generated for the booster circuit 2jb and the memory 29. In addition, the clock signal extraction circuit J performs waveform shaping of the signal from the power receiving planar coil n to form a clock signal. The data input conversion element 30 is amplified by the input amplifier and given to the control unit, 2/, and the signal to be sent to the card processing device 1 is sent to the control unit. 2/ to the data output planar coil 2g via the output amplifier 17 and sent out as a magnetic signal. This signal transmission and reception is performed by the microcomputer 30 cooperating with the memory 29 and the control unit 2/.

Each of these elements is hidden by plastic or the like, forming a car P shape as a whole.

With this configuration, from the card processing device l to the IC car)! A power and clock magnetic signal is applied to the IC card 2, and a magnetic signal for data transmission and reception is transmitted and received between the card processing device and the IC card 2.

The power/clock magnetic signal has a frequency based on the operating frequency of the microcomputer in the IC cartco, that is, the same frequency or an integral multiple thereof. 2M
Let it be H2. The strength of the signal is determined by measuring the power consumption in the IC card λ.

On the other hand, the data magnetic signal is transferred from the card processing device/to the IC.
Both the board to Cartco and the W+ signal from IC Cartco to card processing device L are sent as serial signals, which are then converted to parallel signals and processed.The flow of this signal is as follows: A signal from the device / to the IC card is received by the conversion element J, level-adjusted by the input amplifier F, and then applied to the micro combinator 30 via the control unit 2 /. The micro combinator 30 performs various data processing by performing parallel conversion of serial input according to a built-in control program, and writes data to the memory 29 as necessary. Next, in order to transmit data from the IC car 142 to the card processing device, the serially converted data from the microcomputer 30 is sent to the data output planar coil 2 via the control unit 2 and output amplifier 27.
g is sent to the card processing device l.

To receive this data magnetic signal, the card processing device
, a conversion element provided on both of the IC card λ/6. For example, a Hall element is suitable for z. This is because the detection output of the magnetic signal is a rectangular wave, so there is no need for a circuit for reproducing the signal, and moreover, it can be integrated with peripheral circuits and can be made smaller and simpler. Therefore, any element other than the Hall element may be used as long as it has the same function. However, the element 16 may be a coil since there is little need for miniaturization. Figures 2A, 2B, and 2B show the processing operation of the IC card processing device KIOIC card according to the present invention.・Here, the entire processing device is not shown, but the power transmission coil 19, the power transmission circuit 7, the power system from /I, and the ferrite core 1 are shown.
01, 10λ, a data transmission/reception system consisting of a coil /l/ and a Hall element /A are shown as representative of the processing device W/. And, the ξ2 transmission coil 19 and the magnetic gap provided in the ferrite core 10/ are arranged so as to belong to the same plane, and the end surface of the ferrite core 10/102 facing this magnetic gap is located at the center of the end surface. A Hall element /6 is provided. Correspondingly, the IC card λ also has a receiving coil on the card surface.
Hall element I for data input and coil 2 for data output
By inserting an IC card 42 into a predetermined position of the processing device 1, the power system and data transmission/reception system are connected to each other.

Figure 3 shows the processing equipment/processor shown in Figures 2A, 2B, and
2 shows the circuit configurations of the power system and data transmission/reception system of the IC card λ. The left side of the two-dot chain line in the center of the figure is the processing device/, the right side is the IC card λ, and now the IC card λ is D1. Assume that it is inserted into a physical device l.

First, regarding the ξ power system, the @RF oscillator/
g supplies high-frequency power to the supply planar coil 19. In other words, if the clock number is H, the diode
1'D1 turns off, D2 turns on and transistor QI
Since I is on, Q21 is also on, while transformer Q12 is off, so Q22 is also off. Conversely, when the clock signal becomes L, diode D is turned on, D2 is turned off, transistor Q+1 is turned off, and therefore Q21 is also turned off, while transistor CLI2 is turned on, so that Q22 is also turned on. As a result, FETQ
The coil is turned on and off at 1/2MHz, and the coil is energized.

As a result, a high frequency current is induced in the ξ power receiving coil 2 of the IC card λ, and this induced M1 current is extracted as a clock signal on the one hand, and the diode D3 on the other hand.
Rectified by
It is given to A and converted into a constant pressure output. This constant voltage and pressure output are supplied to various circuits in the IC car ('λ) through rotation for noise removal.

Next, the data transmission/reception system is as follows. To explain the data transmission system from the trench IC card 2 to the processing device, if a data signal of 600 BPS is given to the output amplifier 27 from the control unit,
This data signal is, on the other hand, applied to transistor Q28 via inverter NV2.

On the other hand, transistor Q2? given directly to As a result, the transistors Q271Q2+1 are turned on and off in opposite phases to each other, and the data output coil 2g is energized in the reverse order. As a result, the coil 2g generates magnetic fields in the forward and reverse directions, which are detected by the Hall element 16 of the processing device, amplified by the transistor Q24 of the input amplifier, and sent to the control unit. Input increase V,
A variable resistor V for adjusting the zero point of the Hall element L is installed in the device 15.
R, and a variable resistor VR for gain adjustment of the input amplifier 15,
and is provided.

Next, to explain the data transmission system from the processing device/to the IC card λ, when a data signal of 600 B P S from the control unit 1/3 is given to the output amplifier/3, this data signal is transmitted to the inverter amplifier/3. NV, through transistor Q2! , and a surface force is seen on the transistor Q26 in the local area, which turns the F transistors Q251Q2M on and off in opposite phases to each other, and energizes the data output coil /≠ in the order and in the opposite direction. As a result, the coil /Q generates magnetic fields in the forward and reverse directions, and this magnetic field is detected by the hole element J of the IC card λ, amplified by the transistor Qao of the input amplifier, and then output to the control unit 21. . The input amplifier 26 has a variable resistor VR, similar to the input amplifier 15 of the processing device.

Gain adjustment and small zero adjustment of the Hall element are performed by VR.

As described above, the present invention transmits a power and clock magnetic signal from a card processing device to an IC card, and also transmits and receives a data magnetic signal between the card processing device and the IC card.

IC card processing can be performed that can perform the same function as the contact method while eliminating the drawbacks of the conventional contact method.

[Industrial Applicability] The IC card according to the present invention is a substitute for a conventional magnetic card, and is used, for example, as a bank cash card, other credit cards, an identification card, etc., and is more effective than a magnetic card. It can carry far more information. The card processing device supplies power to the IC card, and also performs the functions of the various cars P by exchanging data with the IC card.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention, and FIGS. 2A and 2B are diagrams showing when an IC card F is inserted into an IC card processing device according to the present invention and processing operations are performed. Figure 3 shows the state of Figure 2A and Figure 2.
In the processing device and IC card shown in Figure B. 6 is a circuit diagram of a 6-power system and a data transmission/reception system. l...Card processing device! ...IC card, /A,
8... Conversion element, /9, u, 2g... Planar coil, 10/. 102... Ferrite core, Q... Transistor,
D...〆iode, INV...inverter, VR
・・・Variable resistance・

Claims (8)

[Claims] 1. A card processing device supplies power and a clock signal to an IC card equipped with an electronic circuit including a microcomputer and a memory, and processes the IC card by transmitting and receiving data between the processing device and the IC card. In the method, the processing device applies a power and clock magnetic signal to the IC card, and the power and clock signals used in the IC card are supplied in a contactless manner, and the processing device and the IC
A method for processing IC cards, characterized in that data is transmitted and received between cards in a contactless manner using magnetic signals. 2. A device that processes an IC card by supplying power and a clock signal to an IC card equipped with an electronic circuit including a microcomputer and a memory, and transmitting and receiving data to and from the IC card, based on the clock signal. an oscillator that generates an output at a predetermined frequency; and a first oscillator that generates a magnetic signal according to the output of the oscillator.
An IC card comprising: a second coil for forming a magnetic signal of data to be applied to the IC card; and a conversion device for receiving a magnetic signal of data to be applied from the IC card. processing equipment. 3. In the device according to claim 2, the first coil has a planar shape, and the second coil has a magnetic gap sandwiching a plane that substantially coincides with a plane formed by the first coil. An IC card processing device that is wrapped around a core. 4. In the device according to claim 3, the conversion device is provided in a magnetic gap portion of the core.
C card processing device. 5. 3. The IC card processing device according to claim 2, wherein the conversion device is a Hall element. 6. An IC card that is equipped with an electronic circuit including a microcomputer and a memory, and that transmits and receives data to and from a card processing device in a non-contact manner by receiving power and clock signals from the card processing device in a non-contact manner. It has a coil, power supply circuit and clock signal extraction circuit,
a circuit that receives a magnetic signal with a frequency having a predetermined relationship with the clock signal and forms a DC voltage and a clock signal; a converter that receives the magnetic signal of data provided from the processing device; and data to be provided to the processing device. An IC card characterized by comprising a second coil that forms a magnetic signal. 7. In the IC card according to claim 6,
The first and second coils are planar, and a conversion device for receiving the magnetic signal of the data is disposed at the center of the second coil. 8. In the IC card according to claim 6,
An IC card characterized in that a conversion device for receiving a magnetic signal of data is a Hall element.