JPH10201517A - Card case for non-contact ic card - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable communication just as desired and to provide the state of disabling communication at the other time by having a magnetic force line shield part composed of a soft magnetic material on one side of card pocket part for putting in a non-contact IC card. SOLUTION: A thin plate 5 composed of the soft magnetic material is constituted as the magnetic force line shield part on one side of card pocket part 4 held between materials, which do not attenuate the lines of magnetic force. Such a card case is used while inserting a non-contact IC card 1 into the card pocket part 4 but when the side of non-contact IC card 1 is turned toward a questioner 3, the thin plate 5 becomes a path for the lines of magnetic force from an antenna inside the non-contact IC card 1 and communication is enabled between the non-contact IC card 1 and the questioner 3. When the thin plate 5 is turned toward the questioner 3, on the other hand, the line of magnetic force is shielded by the thin plate 5, a line 6 of magnetic force is not transmitted to the antenna on the non-contact IC card 1 and communication is disabled between the non-contact IC card 1 and the questioner 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a non-contact IC card used for various financial transactions and personal ID confirmation.
The present invention relates to a card case for a non-contact IC card to be carried.

[0002]

2. Description of the Related Art A non-contact IC card exchanges electric power and signals by electromagnetic induction, and is convenient for financial communication and personal ID cards because of its convenience and high security that can be communicated only by approaching an interrogator. As a product, a very large market can be expected.

FIG. 9 shows the structure of a conventional non-contact IC card and a card case for a non-contact IC card (hereinafter referred to as a card case). A non-contact IC card 1 that exchanges power and signals by electromagnetic induction is placed in a card case 2. The card case 2 protects the non-contact IC card 1 from damage and dirt when the non-contact IC card 1 is carried, and enhances portability. When the non-contact IC card 1 is brought close to the interrogator 3, power and signals can be exchanged between the non-contact IC card 1 and the interrogator 3 by electromagnetic induction. The material of the card case 2 is such that communication with the interrogator 3 is possible even with the non-contact IC card 1 inserted inside the card case 2 for convenience.

[0004]

However, non-contact I
Since the C card 1 can perform non-contact communication, in the conventional card case 2 which emphasizes convenience, communication between the interrogator 3 and the non-contact IC card 1 is performed without the card owner's awareness. However, there is a risk that data may be read or data may be rewritten, and there is a problem in security.

Further, when the card case 2 comes into contact with a metal article when being carried, there is another problem that the magnetic field lines of the non-contact IC card 1 are attenuated and communication becomes impossible.
For example, even when the cigarette case made of a metal outer can and the non-contact IC card 1 placed in the card case 2 are held together in a card pocket of a jacket, communication sometimes becomes impossible.

The present invention solves such a conventional problem, and can maintain a communication state reflecting the consciousness of the cardholder, that is, can communicate only when it is desired to communicate, and communicate at other times. It is an object of the present invention to provide a card case for a non-contact IC card which can be set in a disabled state.

[0007]

According to the card case for a non-contact IC card of the present invention, a non-contact IC is provided by providing a magnetic field line shielding portion made of a soft magnetic material on one side of a card pocket portion for holding the non-contact IC card. If there is an interrogator on the side of the card pocket where the card is inserted, the interrogator and the non-contact IC card can communicate. If there is an interrogator on the side of the magnetic field shield, the interrogator and the non-contact IC card. Communication with is disabled.

[0008]

The card case for a non-contact IC card according to the first aspect of the present invention is characterized in that a magnetic field line shielding portion made of a soft magnetic material is provided on one side of a card pocket for storing the non-contact IC card.

According to this configuration, when the card pocket containing the non-contact IC card is directed to the interrogator, the line of magnetic force is not shielded, so that the non-contact IC card and the interrogator can communicate with each other. When the magnetic field line shielding portion is directed toward the interrogator, the magnetic field lines are shielded and communication between the non-contact IC card and the interrogator becomes impossible.

In the card case for a non-contact IC card according to the second aspect, the first and second card pockets for storing the non-contact IC card are arranged on both sides of the magnetic field line shielding portion made of a soft magnetic material as a center. It is characterized by having been established.

According to this configuration, the non-contact IC card placed in the card pocket portion on the interrogator side of the magnetic field line shielding portion can communicate with the interrogator because the magnetic field lines are not shielded. The non-contact IC card placed in the card pocket on the opposite side is shielded from the lines of magnetic force by the lines of magnetic force shielding, and cannot communicate with the interrogator.

According to a third aspect of the present invention, there is provided the card case for a non-contact IC card according to the second aspect, wherein one of the first and second card pockets for storing the non-contact IC card is provided outside the card pocket. It is characterized in that a magnetic field line attenuation portion made of a perfect conductor or a diamagnetic material is provided.

According to this configuration, the contactless IC to be used
The card is inserted into the card pocket on the side where the magnetic field line attenuation section is not provided, and the non-contact IC card that is not desired to be used is inserted into the card pocket section on the side where the magnetic field line attenuation section is provided. When the non-contact IC card is inserted and directed to the interrogator, the magnetic field lines are attenuated by the magnetic field line attenuating unit, so that communication between the non-contact IC card and the interrogator becomes impossible. When the non-contact IC card is inserted into the card pocket on the side where the magnetic field line attenuating section is not provided and turned toward the interrogator, the non-contact IC card in the card pocket on the side where the magnetic field line attenuating section is not provided is interrogated. Since the magnetic field lines are not attenuated even when the magnetic field line is attenuated, communication with the interrogator becomes possible, and the non-contact I
The magnetic field lines of the C card are shielded by the magnetic field line shielding portions at the centers of the first and second card pockets, and the C card does not communicate with the interrogator.

According to a fourth aspect of the present invention, there is provided a card case for a non-contact IC card, wherein a first card pocket portion sandwiched by a material which does not attenuate magnetic lines is provided, and a magnetic line shielding portion made of a soft magnetic material and a perfect conductor or diamagnetic material are provided. A second card pocket portion sandwiched between magnetic field line attenuation portions made of
A first card pocket portion, a magnetic field line shielding portion, a second card pocket portion, and a magnetic line attenuation portion stacked in this order; a first card pocket portion;
A magnetic field line attenuation section, a second card pocket section, and a magnetic field line shielding section are foldably connected to a second state stacked in this order.

According to this configuration, the contactless IC to be used
When the card is inserted into the first card pocket and the contactless IC card that is not desired to be used is inserted into the second card pocket, the first card pocket is turned to the interrogator in the first state. Since the non-contact IC card inserted into the first card pocket is not shielded from the magnetic field lines, it can communicate with the interrogator, and the non-contact IC card inserted into the second card pocket has the magnetic field line shield. The magnetic field lines are shielded by the section, and communication with the interrogator becomes impossible.
When the first card pocket is turned to the interrogator in the second state, the non-contact IC card inserted into the first card pocket is unable to communicate with the interrogator because the magnetic line of force is attenuated by the magnetic line attenuation portion. Thus, the non-contact IC card inserted into the second card pocket is also in a state where the magnetic field lines are attenuated and communication with the interrogator is possible.

According to a fifth aspect of the present invention, there is provided a card case for a non-contact IC card according to any one of the first to fourth aspects, wherein the size of the magnetic field line shielding portion or the magnetic field line attenuation portion is set to the size of the antenna of the IC card. It is characterized in that it is larger than the size of.

According to this configuration, the communication with the interrogator can be completely prevented by making the size of the magnetic field line shielding portion or the magnetic field line attenuation portion larger than the size of the antenna of the IC card.

Hereinafter, a card case for a non-contact IC card according to the present invention will be described with reference to specific embodiments shown in FIGS. (Embodiment 1) FIGS. 1 and 2 show (Embodiment 1).

As shown in FIG. 1A, a thin plate 5 made of a soft magnetic material is formed on one side of the card pocket portion 4 sandwiched by a material that does not attenuate the magnetic force lines as a magnetic force line shielding portion.

The non-contact IC card 1 is inserted into the card pocket 4.
When the non-contact IC card 1 is turned to the interrogator 3 as shown in FIG. 1B, the thin plate 5 becomes a path of the magnetic field lines 6 of the antenna inside the non-contact IC card 1. Thus, the communication between the non-contact IC card 1 and the interrogator 3 is enabled.

On the other hand, when the thin plate 5 is directed to the interrogator 3 as shown in FIG. 1C, the magnetic field lines are shielded by the thin plate 5,
The magnetic field lines 6 are not transmitted to the antenna of the non-contact IC card 1,
Communication between the non-contact IC card 1 and the interrogator 3 becomes impossible.

This principle will be described with reference to FIG. Thin plate 5
, A non-contact IC card 1 is stacked. As indicated by an arrow line 6 schematically illustrating the magnetic field lines, the magnetic field lines are not weakened by the thin plate 5 but are shielded. Therefore, if the interrogator 3 is on the non-contact IC card 1 side, the non-contact IC card 1 and the interrogator 3 can communicate with each other, but if the interrogator 3 is on the thin plate 5 side, the non-contact IC card 1 And the interrogator 3 cannot communicate. Therefore, whether or not communication is possible is determined depending on which side of the card case 2 is directed to the interrogator.
Is not read out or tampered with.

Although one non-contact IC card 1 is inserted in the card pocket 4 here, the card pocket 4
If necessary, a plurality of non-contact IC cards may be inserted. Similarly, in each of the following embodiments, one or more non-contact IC cards may be inserted into the card pocket portion 4.

(Embodiment 2) FIGS. 3 and 4 show (Embodiment 2). A first card pocket portion 4a and a second card pocket portion 4b made of a material that does not shield magnetic lines of force are disposed on both sides of the thin plate 5 made of a soft magnetic material as a center as a magnetic line shielding portion.

The non-contact IC card 1a to be communicated and the non-contact IC card 1b not to be communicated are
The C card 1a is inserted into the first card pocket 4a, and the non-contact IC card 1b is inserted into the second card pocket 4b.

When the side of the first card pocket portion 4a is directed toward the interrogator 3, the non-contact IC card 1a can communicate with the interrogator 3 because the lines of magnetic force are not shielded, but is in the second card pocket portion 4b. The non-contact IC card 1b cannot communicate with the interrogator 3 because the thin plate 5 shields the lines of magnetic force.

For example, as shown in FIG. 4A, a plurality of non-contact IC cards 1b,
1c may be inserted. As shown in FIG. 4B, when the side of the first card pocket portion 4a faces the interrogator 3,
The non-contact IC card 1a can communicate with the interrogator 3 because the magnetic field lines are not shielded, but the non-contact IC cards 1b and 1c in the second card pocket portion 4b have the interrogator 3 because the thin plate 5 shields the magnetic field lines. Communication with is disabled.

Conversely, when the non-contact IC cards 1b and 1c are set to be in a communicable state and the non-contact IC card 1a is to be in a non-communicable state, as shown in FIG. The second card pocket portion 4b containing 1b and 1c is turned to the interrogator 3. Non-contact IC card 1b,
Since the magnetic field lines 1c are not shielded, communication with the interrogator 3 is possible, but the non-contact IC card 1a is
As a result, the lines of magnetic force are interrupted, so that communication with the interrogator 3 becomes impossible.

As described above, the non-contact IC card 1 that does not want to communicate with the non-contact IC card 1 that wants to communicate can be easily distinguished into the first card pocket portion 4a and the second card pocket portion 4b. Whether communication with the interrogator 3 is possible or not can be determined, and the number and combination of the non-contact IC cards 1 put in the first card pocket portion 4a and the second card pocket portion 4b can be easily changed. .

(Embodiment 3) FIG. 5 shows (Embodiment 3)
Is shown. Between the first card pocket portion 4a and the second card pocket portion 4b made of a material that does not shield magnetic field lines, a thin plate 5 as a magnetic field line shielding portion made of a soft magnetic material is provided.
Outside the second card pocket portion 4b, a thin plate 7 as a magnetic field line attenuation portion made of a perfect conductor or a diamagnetic material is provided.

The thin plate 7 has a function of blocking electromagnetic induction,
For example, a steel plate which is a perfect conductor can be considered.
The non-contact IC card 1a to communicate with the interrogator 3 is inserted into the first card pocket 4a, and the non-contact IC card 1b not to communicate with is inserted into the second card pocket 4b.

When the first card pocket portion 4a is used with the side of the interrogator 3 as shown in FIG. 5 (b), the non-contact IC card 1a is not shielded from the lines of magnetic force. Communication becomes possible, and the non-contact IC card 1b
The lines of magnetic force are shielded by the thin plate 5 and communication with the interrogator 3 becomes impossible. In addition, as shown in FIG.
Even if the side of the card pocket portion 4b is turned to the interrogator side, the line of magnetic force is attenuated by the thin plate 7, and the non-contact IC card 1b is always in a state where communication is impossible, so that security is protected.

(Embodiment 4) FIGS. 6 to 8 show (Embodiment 4). FIG. 6 shows a first card pocket portion 4a sandwiched by a material that does not attenuate magnetic field lines, a thin plate 5 as a magnetic line shield portion made of a soft magnetic material, and a thin plate 7 as a magnetic line attenuation portion made of a perfect conductor or diamagnetic material. And a second card pocket portion 4b sandwiched between the first and second card pocket portions 4b.

A non-contact IC card 1a to be communicated is placed in a first card pocket 4a in a non-contact IC that does not communicate.
The card 1b is inserted into the second card pocket 4b.
As shown in FIG. 7, the first card pocket portion 4 a is placed on the interrogator 3 in a state where the first card pocket portion 4 a, the thin plate 5, the second card pocket portion 4 b, and the thin plate 7 are stacked in this order. If it is turned, the non-contact IC card 1a can communicate with the interrogator 3 because the magnetic field lines are not shielded,
In the card 1b, the magnetic field lines are shielded by the thin plate 5 and the interrogator 3
Communication with is disabled.

As shown in FIG. 8, the first card pocket portion 4a, thin plate 7, card pocket portion 4b, thin plate 5
The first card pocket portion 4a
Is directed to the interrogator 3, the magnetic lines of force of both the non-contact IC card 1a and the non-contact IC card 1b are attenuated by the thin plate 7, and communication with the interrogator 3 is disabled.

Therefore, by changing the direction in which the card pocket 4a is bent, it is possible to select whether communication between the non-contact IC card 1a and the interrogator 3 is possible or not.
As shown in the above embodiments, the thin plate 5 as the magnetic field line shielding portion, the thin plate 7 as the magnetic line attenuation portion, the first card pocket portion 4a, and the second card pocket portion 4b are arbitrarily selected. Thus, it is possible to determine whether communication of the non-contact IC card 1 is possible or not, to determine the number of the non-contact IC cards 1, the number of the non-contact IC cards 1, and the non-contact IC card 1 to be inserted into the first card pocket 4a and the second card pocket 4b. It is needless to say that various combinations can be considered, such as security by a new communication system using a combination of a plurality of cards.

As the soft magnetic material of each of the above embodiments, a high magnetic permeability material such as pure iron or a silicon steel plate, or an amorphous magnetic material, preferably Fe—Bi—Si
-Based amorphous magnetic material is used. A good electrical conductor such as Ag, Au, or Cu is used as the perfect conductor, and Bi, Cu, or the like is used as the diamagnetic material.

[0038]

As described above, according to the card case for a non-contact IC card of the present invention, when the card holder wants to keep the data confidential, the non-contact IC card is shielded from the interrogator by a magnetic field line made of a soft magnetic material. By locating the data on the opposite side of the card, it is possible to eliminate the danger of data being eavesdropped or rewritten without the knowledge of the card holder.

When using a card, a non-contact IC
By locating the card side closer to the interrogator than the magnetic field line shield made of a soft magnetic material, communication can be executed, and an advantageous effect that switching between concealment and use is easy is obtained.

Further, even if the non-contact IC card is held together with the metal article, the effect of not hindering communication can be obtained. Further, since usable non-contact IC cards can be selected, an advantageous effect that it is easy to construct an application using a combination of a plurality of non-contact IC cards is obtained.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a card case for a non-contact IC card according to a first embodiment.

FIG. 2 is a schematic diagram of magnetic lines of force (Embodiment 1);

FIG. 3 is a sectional perspective view of a card case for a non-contact IC card according to a second embodiment.

FIG. 4 is a schematic view showing (Embodiment 2);

FIG. 5 is a sectional perspective view of a card case for a non-contact IC card according to a third embodiment.

FIG. 6 is a sectional perspective view of a card case for a non-contact IC card according to a fourth embodiment.

FIG. 7 is a schematic diagram of lines of magnetic force of (Embodiment 4).

FIG. 8 is a schematic diagram of lines of magnetic force of (Embodiment 4).

FIG. 9 is an explanatory view of a conventional card case for a non-contact IC card.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Non-contact IC card 2 Non-contact IC card card case 3 Interrogator 4 Card pocket part 5 Thin plate [magnetic field line shielding part] 6 Magnetic field line 7 Thin plate [magnetic line attenuation part]

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masayuki Arai 2-16-46 Minami Kamata, Ota-ku, Tokyo Inside Tokimec Co., Ltd. (72) Inventor Akihisa Yamazaki 2--16-46 Minami Kamata, Ota-ku, Tokyo Stock Inside the company Tokimec

Claims (5)

[Claims] 1. A card case for a non-contact IC card in which a magnetic field line shielding portion made of a soft magnetic material is provided on one side of a card pocket portion into which the non-contact IC card is inserted. 2. A card case for a non-contact IC card in which first and second card pockets for storing a non-contact IC card are arranged on both sides thereof with a magnetic field line shield made of a soft magnetic material as a center. 3. A non-contact IC card according to claim 2, wherein a magnetic field line attenuation portion made of a perfect conductor or a diamagnetic material is provided outside one of the card pocket portions of the first and second card pocket portions. Card case. 4. A first material sandwiched between materials that do not attenuate lines of magnetic force.
A second card pocket portion sandwiched between a magnetic field line shielding portion made of a soft magnetic material and a magnetic field line attenuation portion made of a perfect conductor or a diamagnetic material; and a first and a second card pocket portion. A first card pocket portion, a magnetic field line shielding portion, a second card pocket portion, and a magnetic field line attenuation portion in this order, a first card pocket portion, a magnetic field line attenuation portion, and a second card pocket. And a card case for a non-contact IC card which is foldably connected to a second state in which the magnetic field lines are shielded in this order. 5. The card case for a non-contact IC card according to claim 1, wherein the size of the magnetic field line shielding portion or the magnetic field line attenuation portion is larger than the size of the antenna of the IC card.