JP2000108562A - Noncontact type ic card and noncontact type ic card system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noncontact type IC card and a noncontact type IC card system using the same in which even if a device for an IC card such as an IC card reader writer is not used, data are transmitted to an IC chip in the IC card and further either data recorded in the IC chip of the IC card or data excepting data applied to operational processing by the IC chip are transmitted to the device for the IC card such as the IC card reader writer. SOLUTION: The noncontact type IC card is constituted of an IC chip 12, an antenna 11 connected to the IC chip, a data input means 14 for inputting data to the IC chip and an interface 13 which transmits data inputted from the data input means to the IC chip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a semiconductor device (IC)
More particularly, the present invention relates to a non-contact type IC card and an IC card system that perform non-contact transmission and reception of signals by wireless communication with an IC card device such as an IC card reader / writer.

[0002]

2. Description of the Related Art In recent years, IC cards equipped with semiconductor elements (IC chips) for recording and processing data have become widespread from the viewpoint of efficiency of information processing and security. Such an IC card includes a contact type for transmitting and receiving data by connecting an external terminal of the card and a terminal of an external processing device, an antenna coil for transmitting and receiving data by electromagnetic waves, and a semiconductor element for data processing. There is a non-contact type which is built-in and can realize reading and writing with an external processing device by a so-called wireless system. As a non-contact type, a type in which the driving power of an IC circuit is supplied by an electromagnetic wave like data transmission / reception and does not include a battery has been developed.

FIG. 3 shows a conventional non-contact type IC card 1 and an IC card device (IC card reader / writer).
FIG. 1 is a configuration diagram of an IC card system having an IC card 1 including a non-contact type IC card 1 and an IC card reader / writer 2 each having an antenna coil for transmitting and receiving data in a non-contact manner; Antenna coil 11
And the antenna coil 21 of the IC card reader / writer 2,
For example, they have substantially the same size and the same shape. The IC card reader / writer 2 is connected to the host device 3. Commands and data sent from the host device 3
The signal is converted into a carrier signal of a predetermined frequency through an electronic circuit 22 such as an input / output circuit and a modulation circuit provided in the IC card reader / writer 2, and a current flowing through the antenna coil 21 of the IC card reader / writer 2 is induced. A command, data, and the like are transmitted to the non-contact type IC card 1 by electromagnetic induction or the like caused by an electromagnetic field φ.

A current is induced in the antenna coil 11 of the non-contact type IC card 1 by the above-mentioned electromagnetic field φ. The antenna coil 11 is built in the non-contact type IC card 1 and includes an electronic circuit such as a transmission / reception circuit and a modulation (demodulation) circuit.
It is connected to 12 on the C chip.

[0005] Further, transmission of commands and data from the non-contact type IC card 1 to the IC card reader / writer 2 is also performed. In this case, in the reverse procedure, the antenna coil 21 of the IC card reader / writer is generated by the electromagnetic field φ induced by the current flowing in the antenna coil 11 of the IC card.
Current is generated.

A rectifier circuit and a storage battery are provided in the non-contact type IC card 1 connected to the antenna coil 11, and the antenna coil 11 of the IC card is used for transmitting and receiving data.
The driving power of the IC circuit may be supplied by electromagnetic coupling between the antenna circuit 21 and the antenna coil 21 of the IC card reader / writer.

[0007]

However, in the above-described conventional non-contact type IC card, a method for transmitting data to an IC chip in the IC card uses an IC card device such as an IC card reader / writer. There is only. Further, as data to be transmitted to the IC card reader / writer, data other than data recorded in advance on the IC chip in the IC card or data processed by the IC chip cannot be transmitted.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an IC card reader / writer and the like.
It is possible to transmit data to an IC chip in an IC card without using a C card device.
Data other than data recorded on the IC chip in the C card or data processed by the IC chip is stored in the IC card.
An object of the present invention is to provide a non-contact IC card that can be transmitted to an IC card device such as a card reader / writer and a non-contact IC card system using the same.

[0009]

In order to achieve the above object, a non-contact type IC card according to the present invention comprises an IC chip, an antenna connected to the IC chip, and data input to the IC chip. And an interface for transmitting data input from the data input means to the IC chip.

According to the non-contact type IC card of the present invention, there is provided a data input means for inputting data to the IC chip, and an interface for transmitting the data input from the data input means to the IC chip. From I
It is possible to transmit data to an IC chip in an IC card without using an IC card device such as a C card reader / writer. Data input from the data input means, which is data other than data,
It is possible to transmit to the C card device.

In the above non-contact type IC card of the present invention, preferably, the data input means is an operation button formed on a surface of the non-contact type IC card. Data can be easily input by operating the operation buttons formed on the surface of the IC card. More preferably, the operation button is a pressure-sensitive button including a pressure-sensitive sheet. Thus, the operation buttons can be made thinner, and even if the operation buttons are provided, the operation buttons can be made thinner.

According to another aspect of the present invention, there is provided a non-contact type IC card system including a non-contact type IC card having an antenna and an IC card device having an antenna. Card antenna and I
An IC card system for transmitting and receiving a signal by wireless communication with an antenna of a C card device, said IC card comprising: a data input unit for inputting data to an IC chip built in the card; Means for transmitting data input from the means to the IC chip, and transmitting data transmitted to the IC chip by wireless communication between an antenna of the IC card and an antenna of the IC card device to the IC chip. Transmit to device.

According to the non-contact type IC card system of the present invention, the IC card constituting the system has data input means for inputting data to the IC chip and data input from the data input means to the IC chip. And an interface for transmitting data input from the data input means of the IC card, which is data other than data recorded in the IC chip in advance or data processed by the IC chip, to the IC card device. It is possible.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a non-contact type IC according to the present embodiment.
1 is a configuration diagram of an IC card system having a card 1 and an IC card device (IC card reader / writer) 2;
Each of the non-contact type IC card 1 and the IC card reader / writer 2 has an antenna coil for transmitting and receiving data in a non-contact manner, and the antenna coil 11 of the IC card 1 and the antenna coil of the IC card reader / writer 2 2
1 have substantially the same size and shape, for example. The antenna coil 11 of the IC card 1 is embedded in the IC card 1 and includes an IC chip including an electronic circuit such as a transmission / reception circuit, a modulation (demodulation) circuit, a control circuit, and a storage device.
Connected to. The IC card 1 is provided with data input means 14 which is a pressure-sensitive operation button formed on the surface of the card, for example.
An interface 13 for transmitting data input from the IC chip 12 to the IC chip 12 is formed by connecting to the IC chip 12 and the data input means 14, respectively. The operation buttons on the surface of the card may include, for example, numeric keys and alphabet keys, or function keys having a function of writing data to an IC chip or a function of erasing data.

In the IC card 1 described above, data input from the data input means 14 is transmitted to the interface 1
3 is transmitted to the IC chip 12 through the IC chip 12
Control circuit or ASK (Amplitude)
Shift Keying) or PSK (Phase
The carrier signal is converted into a carrier signal of a predetermined frequency through an electronic circuit such as a modulation circuit that modulates the signal by a predetermined modulation method such as a Shift Keying method, and an electromagnetic field φ induced by a current flowing through the antenna coil 11 of the IC card 1. The guidance is transmitted to the IC card reader / writer 2.
Also, the data input from the data input means 14 is converted to an IC
It is also possible to store in a storage area in the chip 12.

An electric current is induced in the antenna coil 21 of the IC card reader / writer 2 by the above-mentioned electromagnetic field φ, and an electronic circuit 2 such as an input / output circuit, a control circuit, or a modulation circuit is generated.
2 to the host device 3 connected to the IC card reader / writer 2.

As in the prior art, transmission of commands and data between the non-contact type IC card 1 and the IC card reader / writer 2 is also performed. For example, to transmit data from the IC card reader / writer 2 to the IC card 1, a current is generated in the antenna coil 11 of the IC card 1 by an electromagnetic field φ induced by a current flowing in the antenna coil 21 of the IC card reader / writer 2. To communicate data.

Conversely, in order to transmit data from the IC card 1 to the IC card reader / writer 2, a current is applied to the antenna coil 11 of the IC card 1 by an electromagnetic field φ induced by a current flowing through the antenna coil 11 of the IC card 1. To transmit data.

The non-contact type IC card 1 is provided with a rectifier circuit and a storage battery connected to the antenna coil 11 so as to transmit and receive data.
The driving power of the IC circuit may be supplied by electromagnetic coupling between the antenna circuit 21 and the antenna coil 21 of the IC card reader / writer. Also, the power for driving the data input means of the IC card 1 can be supplied from the IC card reader / writer by electromagnetic coupling in the same manner as described above.

According to the non-contact type IC card and the non-contact type IC card system using the same according to the present embodiment, the data input means for inputting data to the IC chip by the IC card and the data input means Since it has an interface for transmitting input data to the IC chip, it is possible to transmit data to the IC chip in the IC card without using an IC card device such as an IC card reader / writer. It is possible to transmit data input from the data input means, which is data other than data recorded in the IC chip in advance or data processed by the IC chip, to the IC card device.

Further, according to the above-mentioned non-contact type IC card and the non-contact type IC card system using the same, for example, in a door opening / closing system, etc., a dedicated IC card is possessed and a password is used by using the IC card. By inputting the number, a system that permits the opening and closing of the door can be configured. In this case, the security of the door opening and closing management can be further improved.

[0023] Embodiment FIG 2 is a schematic diagram showing a contactless IC card structure according to the present embodiment. An IC module M having an antenna coil 11 and an IC chip 12 for exchanging data with an IC card reader / writer in a non-contact manner is embedded in the card. Also, on the front of the card, number keys from 0 to 9, a “Write” key, a “Send” key,
A pressure-sensitive flat panel operation button 14 including a “Return” key and a “Clear” key and including a pressure-sensitive sheet is provided. Each of these keys is connected to an IC chip by an interface (not shown). Further, an LED 15 is provided to confirm that power is supplied to the card.

The driving power of the pressure-sensitive flat panel operation button 14 of the IC card is supplied from the IC card reader / writer by electromagnetic coupling, similarly to the driving power of the IC chip. Further, at the time when these driving powers are supplied, the LED 15 is turned on (or turned off after being turned on for a certain period of time), and it can be notified that these driving powers are supplied and the operation button 14 is usable.

In the above IC card, when the flat panel operation button 14 is pressed, data corresponding to the pressed key is transmitted to the interface. For example,
When “0” is pressed, the 8-bit signal “00000000”
"0" is transmitted to the interface. Next, by reading the data stored in the interface by the LD command of the IC chip, the data input from the flat panel operation button 14 can be transmitted to the IC. "Send" of the flat panel operation button 14
When is pressed, the IC transmits data stored at a predetermined address to the IC card reader / writer in accordance with the Send command. When the "Write" key is pressed, certain data is stored in the memory of the IC.
If the "Clear" key is pressed, the currently input data is deleted.

The present invention is not limited to the above embodiment.
For example, data transfer between the IC card and the IC card reader / writer can be performed by electromagnetic waves such as microwaves in addition to electromagnetic coupling. Although the description has been made using the IC module in which the IC chip and the antenna coil are modularized, the module may be further modified to include other components. It can also be configured to be built in.
Although the non-contact type IC card is described in the embodiment, a hybrid type IC card further including a contact type IC module may be used.
In addition, various changes can be made without departing from the spirit of the present invention.

[0027]

According to the non-contact type IC card and the non-contact type IC card system using the same according to the present invention, the data input means for inputting data to the IC chip by the IC card and the input from the data input means are provided. And an interface for transmitting the obtained data to the IC chip.
Data can be transmitted to an IC chip in an IC card without using an IC card device such as an IC card reader / writer, and data recorded in the IC chip in advance or arithmetic processing of the IC chip is performed. It is possible to transmit data other than data, which is input from the data input means, to the IC card device.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an IC card system having a non-contact type IC card and an IC card device (IC card reader / writer) according to the present invention.

FIG. 2 is a schematic diagram illustrating a configuration of an IC card according to an embodiment;

FIG. 3 is a configuration diagram of an IC card system having a non-contact type IC card and an IC card device (IC card reader / writer) according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Non-contact type IC card, 11 ... Antenna coil, 12
... IC chip, 13 ... Interface, 14 ... Data input means (flat panel operation button), 15 ... LE
D, 2 IC card reader / writer, 21 antenna coil, 22 reader / writer electronic circuit, 3 host device, M
IC module.

Claims (4)

[Claims] 1. An IC chip, an antenna connected to the IC chip, data input means for inputting data to the IC chip, and transmitting data input from the data input means to the IC chip. Contactless I having an interface
C card. 2. The non-contact type IC according to claim 2, wherein
2. The non-contact type IC card according to claim 1, wherein the operation button is an operation button formed on a surface of the card. 3. The non-contact type IC card according to claim 2, wherein the operation button is a pressure-sensitive button having a built-in pressure-sensitive sheet. 4. A non-contact type IC card having an antenna,
An IC card system having an IC card device having an antenna, wherein the IC card system exchanges signals by wireless communication between the antenna of the non-contact type IC card and the antenna of the IC card device, wherein the IC card is a card A data input means for inputting data to an IC chip built therein; and an interface for transmitting data input from the data input means to the IC chip, wherein the antenna of the IC card and the IC card Non-contact IC for transmitting data transmitted to the IC chip to the IC card device by wireless communication with an antenna of the device
Card system.