JP2005293191A - Electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent unintentional operation of a noncontact IC chip, even if a user having a portable telephone with a noncontact IC module including the noncontact IC chip and an antenna for the chip mounted is within an electromagnetic wave effective range of an electromagnetic induction access device. <P>SOLUTION: On an opening 31 on a front face of the antenna 22 for the noncontact IC chip mounted on the portable telephone 1, an open/close cover 32 formed from a high magnetic permeability material is disposed. When a user uses the noncontact IC module, he opens the open/close cover 32, permitting the antenna for the noncontact IC chip to receive electric waves from the electromagnetic induction access device. When he does not use the noncontact IC module, he closes the open/close cover 32, thus shielding the antenna for the noncontact IC chip against electromagnetic waves from the electromagnetic induction access device. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to an electronic device in which a non-contact IC module including a non-contact IC chip and a non-contact IC chip antenna is mounted on various electronic devices such as mobile terminals and mobile phones.
In particular, the present invention relates to a technique for preventing a contactless IC chip antenna from communicating with an electromagnetic induction access device such as a reader / writer device unless the user intends.

An IC card equipped with an IC chip with a built-in memory is small and excellent in portability, and is widely used in various electronic devices by utilizing its storage capability.
In particular, contactless IC cards that do not have a battery and receive power via an antenna are more convenient than contact IC cards, and are widely used for electronic payment means such as electronic money and various authentication means. Has been tried.

  For example, Patent Document 1 discloses a mobile phone including a non-contact IC card and a communication unit that exchanges information between the non-contact IC card and an external information communication source.

Such a non-contact type IC card receives radio waves emitted from an electromagnetic induction access device such as an IC reader / writer device, and the non-contact type IC chip antenna supplies electricity generated by the electromagnetic induction action to the IC chip. It has become. When the IC chip is supplied with power, it reads data stored in its own memory and transmits data to the electromagnetic induction access device via the non-contact IC chip antenna. Thus, the IC card can perform non-contact data communication with the electromagnetic induction access device wirelessly.
JP 2001-344544 A

However, a user who does not intend to operate the non-contact type IC chip carries a mobile phone on which a non-contact type IC module including a non-contact type IC chip and a non-contact type IC chip antenna is mounted. It often happens that you get close to the device. As a result, the non-contact IC chip operates in response to the electromagnetic waves emitted from the reader / writer device.
Problems may occur due to the operation of the non-contact IC chip in such a state that is not intended by the user.

  As such a problem, for example, when a non-contact IC chip of a non-contact IC module mounted on a mobile phone is used as electronic money, the data in the memory in the non-contact IC module is It is expected that the data is read out to the reader / writer device without permission.

  As described above, in the use of a conventional mobile phone equipped with a non-contact type IC module including a non-contact type IC chip and a non-contact type IC chip antenna, the above-mentioned security problems are concerned.

  The above-mentioned problem is not limited to the case where a non-contact IC module including a non-contact IC chip and a non-contact IC chip antenna is mounted on a portable electronic device such as a mobile phone, and is not contacted with various electronic devices. The same problem arises when a non-contact IC module including a non-contact IC chip and a non-contact IC chip antenna is mounted.

  The present invention relates to a non-contact type IC module including a non-contact type IC chip antenna and a non-contact type IC chip that can be electromagnetically coupled to an electromagnetic induction access device, as a portable electronic device such as a mobile phone, or an electronic device. Even when the user approaches an electromagnetic induction access device such as a reader / writer device while mounted on the device, unless the user intends, the electromagnetic induction access device and the non-contact IC module are automatically coupled. An object of the present invention is to provide an electronic device that prevents establishment.

  According to the present invention, in an electronic device in which a non-contact IC module including a non-contact IC chip antenna that can be electromagnetically coupled to an electromagnetic induction access device and a non-contact IC chip is mounted, There is provided an electronic apparatus provided with electromagnetic shielding means for shielding electromagnetic waves from the electromagnetic induction access device that performs electromagnetic induction coupling with the non-contact IC chip antenna.

  Preferably, the electronic device includes an opening in the casing of the electronic device, and an opening / closing cover as the electromagnetic shielding means for opening / closing the opening, and the opening / closing cover is formed of a high magnetic permeability material. When the opening is opened and the non-contact IC chip antenna is capable of receiving radio waves outside the housing from the opening, the electromagnetic induction access device can be electromagnetically coupled, When the opening / closing cover closes the opening and the non-contact IC chip antenna is accommodated in the housing, electromagnetic contact coupling between the non-contact IC chip antenna and the electromagnetic induction access device is performed. It is characterized by being shielded.

  Preferably, a second shield means made of a high magnetic permeability material is provided on the opposite side of the opening / closing cover with the non-contact IC chip antenna interposed therebetween.

  More preferably, the electronic device includes an opening in the casing of the electronic device and a columnar body as the electromagnetic shielding means, and the columnar body is provided with the non-contact IC chip antenna. A first surface, an electromagnetic shield surface that is a surface other than the first surface and formed of a high magnetic permeability material, and a pair of shafts provided on both bottom surfaces. When the pair of shafts are rotatably supported and the columnar body is rotated so that the first surface can receive external radio waves from the opening, the non-contact IC chip antenna is When the columnar body is rotated and the first surface is hidden inside the housing, the electromagnetic shield surface closes the opening and the non-contact IC can be electromagnetically coupled to the inductive access device. Chip antenna and electromagnetic induction Inductively coupling with the access device is characterized in that so as to be shielded.

  Specifically, the electronic device is a portable electronic device.

  According to the present invention, when a user operates an electromagnetic shield means provided in an electronic device in an effective state or an invalid state, a non-contact IC chip and an electromagnetic induction access device via a non-contact IC chip antenna are provided. Can be coupled electromagnetically or not coupled electromagnetically.

  That is, when the user does not use the non-contact type IC chip and the electromagnetic shielding means is enabled, the non-contact type IC chip antenna of the non-contact type IC module is not electromagnetically coupled to the electromagnetic induction access device. Can be. As a result, the non-contact IC chip of the non-contact IC module does not operate even when an electronic device equipped with the non-contact IC module is brought close to the electromagnetic induction access device. On the other hand, when the user uses the non-contact type IC chip, if the electromagnetic shielding means is disabled, the non-contact type IC chip antenna of the non-contact type IC module is brought into an electromagnetic inductive coupling state with the electromagnetic induction access device. be able to. As a result, when an electronic device equipped with a non-contact type IC module is brought close to the electromagnetic induction access device, the non-contact type IC chip of the non-contact type IC module is electromagnetically coupled with the electromagnetic induction access device. The non-contact type IC chip of the IC module becomes operable.

With reference to FIG. 1, an embodiment of an electronic device on which a non-contact IC chip, a non-contact IC chip antenna and a non-contact IC module antenna of the present invention are mounted will be described.
A mobile phone will be exemplified as an embodiment of the electronic apparatus of the present invention.

First Embodiment A first embodiment of the electronic apparatus of the present invention will be described with reference to FIGS.
FIG. 1 is a diagram illustrating the outline of a mobile phone as a first embodiment of an electronic apparatus according to the present invention. FIG. 1A is a perspective view showing a state in which a non-contact IC module antenna can receive radio waves. FIG. 1B is a perspective view showing a state in which the non-contact IC module antenna cannot receive radio waves.
The mobile phone 1 includes a first housing 11 and a second housing 12 that is rotatably connected to the first housing 11 by a hinge 19. The body 11 and the second housing 12 can be folded. Thus, FIGS. 1A and 1B particularly illustrate a foldable mobile phone.
The first housing 11 is usually provided with a button operation unit, and the second housing 12 is usually provided with a display unit. Reference numeral 13 denotes a cellular phone antenna, and reference numeral 14 denotes a speaker sound output hole. These configurations are known and illustration is omitted.

An opening 31 is formed in the back surface 30 on the back of the first housing 11, and the non-contact IC chip antenna 22 is disposed in the mobile phone 1 located in the back of the opening 31.
An opening / closing cover 32 that opens and closes the opening 31 is provided in the first housing 11, and the opening / closing cover 32 is connected to the slide switch 15 provided on the back of the housing via a connection mechanism (not shown). Yes. The slide switch 15 can be opened and closed by operating it up and down.

FIG. 1A shows a state in which the opening / closing cover 32 is opened and the non-contact IC chip antenna 22 can receive radio waves outside the mobile phone 1, and FIG. 1B shows that the opening / closing cover 32 is closed. The non-contact IC chip antenna 22 is housed inside the mobile phone 1 and cannot receive external radio waves.
The open / close cover 32 is made of a material having high magnetic permeability such as iron or copper. The reason is that when the open / close cover 32 is closed and the non-contact IC chip antenna 22 is hidden from the outside of the mobile phone 1, the electromagnetic induction coupling with the electromagnetic induction access device such as the reader / writer device is cut off. Because.

It is desirable that the back surface 30 around the opening 31 located around the opening / closing cover 32 is also made of a material having high magnetic permeability.
Although the electromagnetic wave radiated from the electromagnetic induction access device goes straight, the electromagnetic wave radiation area has a three-dimensional extent, so that there is also an electromagnetic wave that wraps around the non-contact IC chip antenna 22. Therefore, if not only the front surface of the non-contact IC chip antenna 22 but also the entire periphery of the non-contact IC chip antenna 22 is electromagnetically shielded, the electromagnetic shielding effect is greatly enhanced.

2A and 2B show a configuration example of the non-contact type IC module 20 disposed in the first housing 11 of the mobile phone 1.
The non-contact type IC module 20 includes a non-contact type IC chip 21, a conductive thin film wiring 23, a synthetic resin insulating film 24, and a high magnetic permeability substrate 25.
The conductive thin film wiring 23 is a thin film made of aluminum, for example, and is wound a plurality of times to constitute the non-contact IC chip antenna 22.

  The reason for using the high magnetic permeability substrate 25 is to eliminate electromagnetic induction coupling with an electromagnetic induction access device such as a reader / writer device from the surface opposite to the surface on which the non-contact IC chip antenna 22 is formed, This is to enhance the electromagnetic shielding effect.

FIG. 3 is a diagram illustrating the configuration of the non-contact IC module inside the mobile phone illustrated in FIGS. 1A and 1B and the connection state with the reader / writer device as an example of the electromagnetic induction access device. It is.
A transmission driver circuit 211 and a reception driver circuit 212 are connected to the antenna 22.
The transmission driver circuit 211 and the reception driver circuit 212 are connected to the control unit 213.
The control unit 213 is connected to a memory 214 that stores various data.
The non-contact type IC chip 21 is equipped with a power supply unit that drives the control unit 213, the memory 214, etc., by rectifying the AC power received by the antenna 22 to convert it into a DC voltage, and further smoothing it. The illustration is omitted.

The reader / writer device 50 includes a transmission / reception antenna 51 and a control unit 52.
The transmission / reception antenna 51 outputs radio waves (electromagnetic waves) of a predetermined radio frequency that can be electromagnetically inductively coupled with the non-contact IC chip antenna 22.
When the non-contact IC chip antenna 22 mounted on the mobile phone 1 is located in an effective electromagnetic wave area where the electromagnetic wave transmitted from the transmission / reception antenna 51 is equal to or higher than a predetermined level, the non-contact IC chip antenna 22 and the transmission / reception antenna 51 The electromagnetic wave is generated by receiving electromagnetic waves from the transmission / reception antenna 51 through electromagnetic induction coupling, the electric power is supplied to the non-contact type IC chip 21 to drive the non-contact type IC chip 21, and the control unit 52 of the reader / writer device 50. Data communication is enabled via the transmitting / receiving antenna 51 and the non-contact IC chip antenna 22.

As illustrated in FIG. 1A, a user who has a mobile phone 1 on which a non-contact IC module 20 having a non-contact IC chip 21 and a non-contact IC chip antenna 22 is mounted has a back surface 30. When the opening / closing cover 32 of the opening 31 is opened, the non-contact IC chip antenna 22 mounted on the first housing 11 is exposed to the outside of the opening 31 of the mobile phone 1. As a result, the non-contact IC chip antenna 22 can be electromagnetically inductively coupled to the transmission / reception antenna 51 of the reader / writer device 50.
As a result, the non-contact IC chip 21 and the control unit 52 of the reader / writer device 50 perform predetermined data communication and data processing via the non-contact IC chip antenna 22 and the transmission / reception antenna 51.

On the other hand, as illustrated in FIG. 1B, a user who has a mobile phone 1 on which a non-contact IC module 20 having a non-contact IC chip 21 and a non-contact IC chip antenna 22 is mounted. When the open / close cover 32 of the opening 31 of the back surface 30 is closed, electromagnetic induction coupling between the non-contact IC chip antenna 22 mounted on the first housing 11 and the transmission / reception antenna 51 of the reader / writer device 50 is cut off. Is done. That is, as illustrated in FIG. 3, the high magnetic permeability opening / closing cover 32 is positioned as an electromagnetic shield between the non-contact IC chip antenna 22 and the transmission / reception antenna 51 of the reader / writer device 50, and The electromagnetic wave toward the non-contact IC chip antenna 22 is shielded.
As a result, even if the non-contact IC chip antenna 22 mounted on the mobile phone 1 is located within the electromagnetic wave effective range of the transmission / reception antenna 51, the non-contact IC chip antenna 22 cannot receive radio waves from the transmission / reception antenna 51. The non-contact type IC chip 21 does not operate. As described above, when the user does not intend to use the device, the non-contact IC chip 21 does not operate even if the user who has the mobile phone 1 unconsciously is positioned within the electromagnetic wave effective range of the reader / writer device 50.

As is obvious from the above, the opening / closing cover 32 with the opening 31 closed functions as the basic electromagnetic shielding means of the present invention.
The electromagnetic wave from the transmission / reception antenna 51 not only goes straight from the front of the opening / closing cover 32 but also is distributed in a three-dimensional space. Therefore, the opening / closing cover 32 alone is used as an electromagnetic shield for the non-contact IC chip antenna 22. It may not be enough. As a result, electromagnetic waves may enter from the side surface of the non-contact IC chip antenna 22 and / or the back surface of the non-contact IC chip antenna 22.
The non-contact IC chip antenna 22 does not react to electromagnetic waves from the side surface, but reacts to electromagnetic waves from the back surface. On the other hand, as illustrated in FIG. 2, a high-permeability substrate 25 is disposed on the surface of the non-contact IC chip antenna 22 opposite to the surface exposed to the opening 31. Electromagnetic waves from the back surface of the non-contact IC chip antenna 22 are also shielded.
According to the present embodiment, when the open / close cover 32 is closed, the non-contact IC chip antenna 22 is electromagnetically shielded from all directions.
Thus, in the present embodiment, the opening / closing cover 32 and the high magnetic permeability substrate 25 function as electromagnetic shielding means.

  The electromagnetic shielding means of the present embodiment is an opening / closing cover 32 on the front surface of the non-contact IC chip antenna 22 and a high-permeability substrate 25 on the back surface, and the thickness direction is small. However, the adverse effect on the mounting of the mobile phone 1 is small.

  In the present embodiment, an example has been described in which the opening / closing cover 32 is used as electromagnetic shielding means and the opening 31 of the first housing 11 can be opened / closed by the opening / closing cover 32 by operating the slide switch 15. For example, a detachable cover that can be fitted into the opening 31 may be formed of a high magnetic permeability material, and this cover may be used as an electromagnetic shield means.

Second Embodiment A second embodiment of the present invention will be described with reference to FIGS.
FIG. 4 is a diagram illustrating the outline of a mobile phone 2 as a second embodiment of the electronic apparatus of the present invention. FIG. 4A is a perspective view showing a state in which the antenna for a non-contact IC module can receive radio waves. FIG. 4B is a perspective view showing a state in which the non-contact IC module antenna cannot receive radio waves.
The cellular phone 2 illustrated in FIGS. 4A and 4B is the same as that of the first embodiment except that the opening / closing cover 32 is not provided in the opening 31 portion of the back surface 30.

FIGS. 5A to 5C illustrate the configuration of the antenna unit 40A used in the mobile phone according to the second embodiment of the present invention illustrated in FIGS. 4A and 4B and the usage pattern thereof. FIG.
The non-contact type IC chip antenna unit 40A illustrated in FIGS. 5A to 5C includes a substantially cylindrical body (columnar body) 45 and a non-columnar body body 45 formed on a flat portion. It has a contact IC module. Shafts 45 a and 45 b are provided on both end faces of the body 45.
The non-contact IC chip antenna unit 40A has a housing 46 that pivotally supports the body 45 so that the shafts 45a and 45b can rotate. A window 46a corresponding to the opening 31 is formed in the housing 46. ing.
As a method of forming the non-contact IC chip antenna 22 of the second embodiment, for example, as described with reference to FIG. 2, the aluminum thin film wiring is wound around the flat portion of the body 45 a predetermined number of times. It can be formed by printing.

The substantially cylindrical (columnar) body 45 is preferably formed of a material having high magnetic permeability, such as iron or copper. The reason for this is to eliminate the influence of unintended electromagnetic waves from the back surface of the non-contact IC chip antenna 22 as described in the first embodiment. Of course, the entire body 45 need not be formed of a high magnetic permeability material, and the body 45 may be made of a synthetic resin or the like and only the outer periphery thereof may be covered with the high magnetic permeability material.
The housing 46 is also preferably manufactured with high magnetic permeability. The reason for this is to eliminate the influence of unintended electromagnetic waves from the periphery of the non-contact IC chip antenna 22 as described above. Of course, the entire housing 46 does not need to be formed of a high magnetic permeability material, and the housing 46 may be made of a synthetic resin or the like and only the surface portion thereof may be covered with the high magnetic permeability material.

  The non-contact IC chip antenna 22 is attached to the first casing 11 of the mobile phone 1 so that the window 46 a of the casing 46 coincides with the opening 31.

When the user brings the non-contact IC chip 21 into an operable state via the non-contact IC chip antenna 22, the user rotates the body 45 on which the non-contact IC chip antenna 22 is attached with a finger. 5 (C) and FIG. 4 (A), that is, the non-contact IC chip antenna 22 enables reception of radio waves outside the mobile phone 1 through the opening 31.
Further, when the user places the mobile phone 1 so that the non-contact IC chip antenna 22A is positioned within the electromagnetic wave effective range of the transmission / reception antenna 51 of the reader / writer device 50, the non-contact IC chip antenna 22 is read / read. The non-contact type IC chip 21 is driven in response to the electromagnetic waves of the transmission / reception antenna 51 of the writer device 50, and the non-contact type IC chip 21 performs predetermined data processing with the control unit 52 of the reader / writer device 50. It can be carried out.

On the other hand, when the non-contact IC chip antenna 22 and the non-contact IC chip 21 are not used, the user turns the body 45 on which the non-contact IC chip antenna 22 is mounted with his / her finger, as shown in FIG. The state shown in FIG. 4B, that is, the non-contact IC chip antenna 22 is prevented from receiving radio waves outside the opening 31.
In this state, the non-contact IC chip antenna 22 shields the electromagnetic waves of the transmission / reception antenna 51 of the reader / writer device 50.
As described above, in the second embodiment, the surface (first surface) of the substantially cylindrical body (columnar body) 45 to which the non-contact IC chip antenna 22 is mounted is opposite to the opening 31. When positioned, the body (columnar body) 45 functions as electromagnetic shielding means.

  In the above embodiment, a substantially cylindrical body (columnar body) has been exemplified as the body 45, but the body 45 may have a polygonal cross section, for example, if it has a rotatable shape. There may be.

Third Embodiment A third embodiment of the present invention will be described with reference to FIG.
FIG. 6 is a diagram illustrating the outline of a mobile phone 3 as a third embodiment of the electronic apparatus of the present invention, and FIG. 6 (A) shows a state in which the non-contact IC module antenna 22 can receive radio waves. FIG. 6B is a perspective view showing a state in which the non-contact IC module antenna 22 cannot receive radio waves.
In the third embodiment, a cylindrical shape similar to that illustrated in FIG. 5B is provided at a hinge 19 portion that rotatably connects the first housing 11 and the second housing 12 of the mobile phone 1. A non-contact type IC module is mounted on the flat portion of the body (columnar body) 45 of the body, and an open / close lid 191 that can be manually opened and closed is attached to the hinge 19.
A non-contact IC chip 21 is connected to the non-contact IC chip antenna 22 but is housed inside the mobile phone 3 and cannot be seen from the outside. Therefore, the non-contact type IC chip is not illustrated in FIG.
In order to increase the electromagnetic shielding effect, preferably, the opening / closing lid 191 or the surface of the opening / closing lid 191 is made of a high magnetic permeability material.
Similarly, it is desirable to manufacture the body (columnar body) 45 to which the non-contact IC chip antenna 22 is mounted or the surface thereof from a material having high magnetic permeability.

As illustrated in FIG. 6A, when the user opens the open / close lid 191, the non-contact IC chip antenna 22 is exposed to the outside of the mobile phone 2, and the transmission / reception antenna 51 of the reader / writer device 50 is It becomes possible to react to electromagnetic waves.
On the other hand, as illustrated in FIG. 6B, when the user closes the opening / closing lid 191, the non-contact IC chip antenna 22 is hidden from the outside of the mobile phone 1, and the non-contact IC chip antenna 22. Does not react to electromagnetic waves of the transmitting / receiving antenna 51 of the reader / writer device 50.
In the third embodiment, the body 45 to which the non-contact IC chip antenna 22 is attached and the open / close lid 191 in the closed state correspond to electromagnetic shielding means.

In carrying out the present invention, the present invention is not limited to the above-described examples, and various forms can be taken.
As described above, the cellular phones 1 to 3 are exemplified as the electronic devices. However, the present invention is not limited to the cellular phones 1 to 3, but may be applied to various portable electronic devices such as a PDA (Personal Digital Assistant) and a portable game machine. Can do.

FIG. 1 is a diagram illustrating the outline of a mobile phone as a first embodiment of an electronic apparatus according to the present invention. FIG. 1A is a perspective view showing a state in which a non-contact IC module antenna can receive radio waves. FIG. 1B is a perspective view showing a state in which the non-contact IC module antenna cannot receive radio waves. 2 is a diagram showing the configuration of the non-contact IC module illustrated in FIG. 1, FIG. 2 (A) is a side view, and FIG. 2 (B) is a front view. FIG. 3 is a block diagram illustrating the configuration of the mobile phone illustrated in FIGS. 1A and 1B and the connection state with the reader / writer device. FIG. 4 is a diagram illustrating the outline of a mobile phone as a second embodiment of the electronic device of the present invention. FIG. 4A is a perspective view showing a state in which the antenna for the non-contact IC module can receive radio waves. FIG. 4B is a perspective view showing a state in which the non-contact type IC module antenna cannot receive radio waves. 5A to 5C are configuration diagrams of an antenna unit used in the mobile phone according to the second embodiment of the present invention illustrated in FIGS. 4A and 4B and perspective views illustrating the usage pattern. FIG. FIG. 6 is a diagram illustrating the outline of a mobile phone as a third embodiment of the electronic device of the present invention. FIG. 6A is a perspective view showing a state in which the antenna for the non-contact IC module can receive radio waves. FIG. 6B is a perspective view showing a state in which the non-contact IC module antenna cannot receive radio waves.

Explanation of symbols

1-3 .. Mobile phone
11 .... first housing, 12 .... second housing
13 .. Mobile phone antenna, 14 .. Speaker sound output opening
15. Slide switch, 19. Hinge
30 .. Lid 31 .. Opening 31 and 32 .. Opening and closing cover 20 .. Non-contact IC module
21 ・ ・ Non-contact IC chip
211 .. Transmission driver circuit, 212 .. Reception driver circuit
213 .. Control part, 214 .. Memory
22. ・ Non-contact IC chip antenna
23 .. Conductive thin film wiring
24..Insulating film made of synthetic resin
25 .. High permeability substrate 40 .. Non-contact IC chip antenna unit
45 ・ ・ Body, 45a, 45b ・ ・ Shaft
46..Case, 46a..Window 50..Reader / writer device
51..Transceiver antenna, 52..Control unit

Claims (5)

In an electronic device on which a non-contact IC module including a non-contact IC chip antenna capable of electromagnetically coupling with an electromagnetic induction access device and a non-contact IC chip is mounted,
An electronic apparatus comprising: an electromagnetic shielding means for shielding electromagnetic waves from the electromagnetic induction access device that performs electromagnetic induction coupling with the non-contact IC chip antenna. The electronic device is provided with an opening / closing cover as the electromagnetic shielding means for opening and closing the opening while providing an opening in the casing of the electronic device,
The opening / closing cover is formed of a high magnetic permeability material, and when the opening is opened so that the non-contact IC chip antenna can receive radio waves outside the housing from the opening, the electromagnetic When the opening and closing cover closes the opening and the non-contact IC chip antenna is accommodated in the housing, the non-contact IC chip antenna The electromagnetic induction coupling with the electromagnetic induction access device is shielded,
The electronic device according to claim 1. The second shield means made of a high magnetic permeability material is provided on the opposite side of the opening / closing cover with the non-contact IC chip antenna interposed therebetween,
The electronic device according to claim 2. The electronic device is provided with an opening in the casing of the electronic device, and includes a columnar body as the electromagnetic shielding means,
The columnar body is provided on a first surface on which the non-contact IC chip antenna is disposed, an electromagnetic shield surface that is a surface other than the first surface and is formed of a high magnetic permeability material, and both bottom surfaces. And the pair of shafts are rotatably supported in the housing, and the columnar body is rotated so that the first surface transmits external radio waves from the opening. When the reception is enabled, the non-contact IC chip antenna can be electromagnetically coupled to the electromagnetic induction access device, and the first surface is hidden inside the casing by rotating the columnar body. Is characterized in that the electromagnetic shield surface blocks the opening to shield electromagnetic induction coupling between the non-contact IC chip antenna and the electromagnetic induction access device.
The electronic device according to claim 1. The electronic device is a portable electronic device,
The electronic device according to claim 1.

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