JP2001357361A - Reader / writer for non-contact IC card - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable stable operation even when a non-contact IC card is used as a card alone or while being stored in a card case or the like, and to output an R / W unit. Even if it is large, it is possible to prevent the generation of a dead zone near the surface of the R / W portion. A reader / writer for a non-contact IC card which includes an R / W unit for wirelessly communicating with a built-in antenna of the non-contact IC card and performs any one of power supply, data transmission, and data reception. 10, a stepped portion provided on the surface of the R / W section 11 so that the position of communication with the built-in antenna 101 of the non-contact IC card is equal to or less than a predetermined value, that is, the magnetic field intensity received by the built-in antenna 101 is equal to or less than a predetermined value. 13 was provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reader / writer for a contactless IC card (hereinafter referred to as "contact reader / writer") which wirelessly communicates with a contactless IC card to supply power and transmit / receive data.
R / W).

[0002]

2. Description of the Related Art FIG. 6 shows a conventional R / R for a non-contact IC card.
It is a perspective view which shows W. Conventional non-contact IC card R /
W50 includes an R / W section 51 provided with an antenna 51a on the upper surface thereof, and a rectangular box-shaped slot section 52 provided so as to cover the antenna 51a of the R / W section 51 with a predetermined space. It has. The size of the slot portion 52 is about 100 mm in width, about 50 mm in height, and about 50 mm in depth. Usually, it is assumed that a card alone or a card is used while stored in a card case or a wallet or the like. are doing.

[0003]

The conventional R / W 50 for an IC card described above uses a non-contact IC card, such as a magnetic card, in a card case when the non-contact IC card is used in a card case or the like. In some cases, a device that weakens electromagnetic waves from the R / W unit 51 may be included. In this case, in order to operate the non-contact IC card stably, the R / W5
It was necessary to set the output of 0 to be somewhat strong.

[0004] However, when the output of the R / W 50 is enhanced, when the card is housed in a card case or the like, it operates well, but when the card is used alone, the output is too large, resulting in excessive power. May not be supplied in the vicinity of the surface of the R / W unit 51 because of the supply of

On the other hand, the R / W in which the non-contact IC card operates
In general, there is a demand to increase the output of the R / W unit 51 in order to increase the distance (operating distance) between the surface of the unit 51 and the non-contact IC card. However, R / W part 5
When the output of No. 1 is increased, the magnetic field intensity near the surface of the R / W unit 51 becomes excessively large, and an area where the non-contact IC card does not operate (hereinafter, referred to as a dead zone) occurs near the surface of the R / W unit 51. . Conventionally, in order to prevent the generation of this dead zone, it took a lot of time to adjust R / W50.

In order to prevent the generation of a dead zone near the surface of the R / W unit 51, it is general to adjust the output of the R / W unit 51 so as to weaken the output of the surface of the R / W unit 51. is there. That is, in order to guarantee the operation near the surface of the R / W unit 51, the operating distance of the non-contact IC card is often sacrificed.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to realize a stable operation even if a non-contact IC card is used alone or stored in a card case or the like. An object of the present invention is to provide a reader / writer for a contact IC card.

Another object of the present invention is to prevent the generation of a dead zone near the surface of the R / W section even if the output of the R / W section is increased in order to extend the operating distance of the non-contact IC card. It is to provide a reader / writer for a non-contact IC card which can perform the operation.

[0009]

According to a first aspect of the present invention, there is provided an antenna unit for wirelessly communicating with a built-in antenna of a non-contact IC card.
In a reader / writer for a non-contact IC card which performs any one of power supply, data transmission and data reception, the non-contact IC card is provided on or near a surface of the antenna unit,
A reader / writer for a non-contact IC card, comprising a communication position regulating means for regulating a communication position of a card.

[0010] According to a second aspect of the present invention, in the reader / writer for the non-contact IC card according to the first aspect, the communication position restricting means is configured such that a magnetic field intensity received by a built-in antenna of the non-contact IC card is less than a predetermined value. A reader / writer for a non-contact IC card.

[0011] The invention of claim 3 is claim 1 or claim 2.
In the reader / writer for a non-contact IC card described in the above, the communication position regulating means prevents the built-in antenna of the non-contact IC card and the antenna unit from approaching a predetermined distance or less. It is a reader / writer for a contact IC card.

According to a fourth aspect of the present invention, there is provided the first or second aspect.
Wherein the communication position regulating means forcibly tilts the built-in antenna of the non-contact IC card and the antenna section. Reader / writer.

[0013] The invention of claim 5 is the invention of claim 1 or claim 2.
In the reader / writer for a non-contact IC card described in the above, the communication position restricting means reduces a portion where the built-in antenna of the non-contact IC card and the antenna section overlap each other, It is a reader / writer.

According to a sixth aspect of the present invention, there is provided the first to fifth aspects.
In the reader / writer for a non-contact IC card described in any one of the above, the communication position restricting means may include a step portion (1) provided on or near the surface of the antenna portion.
3) or a projection (33, 43).

According to a seventh aspect of the present invention, there is provided the first to fifth aspects.
In the reader / writer for a non-contact IC card described in any one of the above, the communication position restricting means is an inclined portion (23) for inclining the surface of the antenna section in a slope shape or a step shape. This is a reader / writer for a non-contact IC card.

[0016]

Embodiments of the present invention will be described below in more detail with reference to the drawings. (First Embodiment) FIG. 1 is a perspective view showing a first embodiment of a non-contact IC card R / W according to the present invention, and FIG.
It is a figure showing how to use R / W for non-contact IC cards by an embodiment. In each of the embodiments described below, portions having the same functions as those of the above-described conventional example are denoted by the same reference numerals at the end, and redundant description will be omitted as appropriate.

The R / W 10 for a non-contact IC card is a R / W
In addition to the part 11 and the slot part 12, a step part 13 is provided. In addition, the non-contact IC card 100 has an R / W1
0 is a card that is wirelessly supplied with power and transmits and receives data to and from the R / W 10 wirelessly, and includes a built-in antenna 101. In this embodiment, the communication distance is 0 to 10
The proximity type (or proximity type) of about 0 mm is targeted.

The surface of the R / W unit 11 has a slot 12
One stepped portion 13 is provided at the back of the inside. The height of the step portion 13 is about 10 mm and the depth is about 15 m
m. The step portion 13 is preferably made of an insulator, for example, plastic such as vinyl chloride or ABS.

R / W for non-contact IC card of this embodiment
2, when the card is used alone by providing the stepped portion 13, the card 100 hits the stepped portion 13 near the surface of the R / W portion 11 as shown in FIG. And antenna 11 of R / W unit 11
The area where a overlaps with a becomes small, and as a result, the magnetic field intensity becomes equal to or less than a predetermined value, so that the card alone can operate stably.

As shown in FIG. 2B, even when the IC card 100 rides on the step 13, the IC card 100 is inclined with respect to the surface of the R / W section 11 so that the magnetic field is reduced. The strength becomes equal to or less than a predetermined value, and the card operates stably even with a single card.

(Second Embodiment) FIG. 3 is a perspective view showing a second embodiment of the non-contact IC card R / W according to the present invention. The R / W 20 according to the second embodiment has a slope 23 formed on the surface of an R / W portion 21 at an angle. In this case, since the state as shown in FIG. 2B can be surely formed, the magnetic field intensity becomes equal to or less than a predetermined value, and the card alone operates stably.

(Third Embodiment) FIG. 4 is a perspective view showing a third embodiment of the non-contact IC card R / W according to the present invention. The R / W 30 of the third embodiment is an example applied to an R / W that is not a general slot type. R / W unit 31
Is provided with a spherical projection 33 at the center thereof.
In the vicinity of the W section 31, the card 100 is set so as to be oblique to the surface of the R / W section 31. For this reason, for example, the non-contact IC card 100
Is used, even if the output of the R / W unit 31 is increased so as to extend the operating distance of the non-contact IC card 100,
In the vicinity of the W section 31, the magnetic field intensity received by the non-contact IC card 100 is equal to or less than a predetermined value, so that the non-contact IC card 100 can operate stably.

(Fourth Embodiment) FIG. 5 is a perspective view showing a non-contact IC card R / W according to a fourth embodiment of the present invention. In the third embodiment, the projections 33 are spherical, but may be, for example, a triangular pyramid projection 43 in the shape of a triangular pyramid, like the R / W 40 of the fourth embodiment. Projections of other shapes may be used.

(Modifications) Various modifications and changes are possible without being limited to the embodiment described above, and these are also within the equivalent scope of the present invention. For example, in the first embodiment, a single step is used as the protrusion, but a plurality of steps may be used. Further, in the second embodiment, the slope is linear, but may be stepped.

[0025]

As described above in detail, according to the present invention, the communication position of the antenna unit with the non-contact IC card is physically restricted on or near the surface of the antenna unit. Even if the magnetic field intensity applied to the non-contact IC card becomes equal to or less than a predetermined value and the output of the reader / writer is increased, the non-contact IC card operates stably near the surface of the antenna unit. In addition, since the occurrence of the dead zone can be prevented, the time spent for adjusting the reader / writer can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a reader / writer for a non-contact IC card according to the present invention.

FIG. 2 is a diagram showing a method of using the contactless IC card according to the first embodiment.

FIG. 3 is a perspective view showing a second embodiment of a reader / writer for a non-contact IC card according to the present invention.

FIG. 4 is a perspective view showing a third embodiment of a reader / writer for a non-contact IC card according to the present invention.

FIG. 5 is a perspective view showing a fourth embodiment of a non-contact IC card reader / writer according to the present invention.

FIG. 6 is a perspective view showing a conventional non-contact IC card reader / writer.

[Explanation of symbols]

10, 20, 30, 40 Reader / writer for non-contact IC card (R / W) 11, 21, 31, 41 Reader / writer (R / W) section 12, 22 Slot section 13 Step section 23 Slope 33 Spherical projection 43 Triangle Conical projection 100 Non-contact IC card 101 Built-in antenna

Claims (7)

[Claims] 1. A non-contact IC card reader / writer comprising: an antenna unit for performing wireless communication with a built-in antenna of the non-contact IC card, and performing any one of power supply, data transmission, and data reception. A reader / writer for a non-contact IC card, comprising: a communication position restricting unit provided on or near a surface of the unit for restricting a communication position of the non-contact IC card. 2. The non-contact IC card reader / writer according to claim 1, wherein the communication position restricting means controls a magnetic field intensity received by a built-in antenna of the non-contact IC card to be equal to or less than a predetermined value. A reader / writer for a non-contact IC card. 3. The non-contact IC card reader / writer according to claim 1, wherein the communication position restricting means is configured to set a distance between a built-in antenna of the non-contact IC card and the antenna unit to be equal to or less than a predetermined distance. A reader / writer for a non-contact IC card, characterized in that it is kept away from the reader / writer. 4. The reader / writer for a non-contact IC card according to claim 1, wherein the communication position restricting means forcibly sets the built-in antenna of the non-contact IC card and the antenna unit. A reader / writer for a non-contact IC card, wherein the reader / writer is inclined. 5. The non-contact IC card reader / writer according to claim 1, wherein the communication position regulating means reduces a portion where the built-in antenna of the non-contact IC card and the antenna section overlap. A reader / writer for a non-contact IC card. 6. Any one of claims 1 to 5
In the non-contact IC card reader / writer described in the paragraph, the communication position regulating means is a step or a projection provided on or near the surface of the antenna unit. Reader / writer. 7. Any one of claims 1 to 5
In the reader / writer for a non-contact IC card described in the paragraph, the communication position regulating means is an inclined portion that inclines the surface of the antenna section in a slope shape or a step shape. Reader / writer.