JPH10154211A - Adapter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter for noncontact memory card system hardly affected by an external magnetic influence, stable in operation, and superior in reliability. SOLUTION: The main body 11 of the adapter device 10 contains a power supply connector 15 for supplying a source to a power supply connector 21 provided in a memory card 20, and a signal transferring connector 16 for performing the transmitting/receiving of a signal with a signal transferring connector 22 provided in the memory card 20. A metal layer 19 for covering the setting part of the power supply connectors 15 and 21 and the setting part of the signal transferring connectors 16 and 22 is provided at the inner side of a cover board 12 attached to the front and the back of the main body 11. The cover board 12 can be formed of a metallic material such as magnetic stainless or the like, and also can be formed of a nonmagnetic plastic material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adapter device for mounting a non-contact memory card provided with a coil for electromagnetic coupling as a non-contact coupling means to a terminal provided with a contact coupling means.

[0002]

2. Description of the Related Art In recent years, memory cards have been widely used in communication devices as well as external storage media of personal computers, and their demands and fields of use have expanded dramatically. The connection method between the memory card and the terminal includes a contact type and a non-contact type. In the contact type, signals are exchanged by inserting pins into jacks, and those that exchange signals using about 68 pins can read or write information because 8-bit or 16-bit parallel data can be transferred. However, the pins and jacks for exchanging signals are exposed from the connector, resulting in poor contact due to contamination and reduced insertion / removal resistance due to pin miniaturization. There is a problem that trouble easily occurs. On the other hand, the non-contact type is practically used in various fields because the conductor is not exposed, so that the above-mentioned trouble does not occur and the use in a dirty environment is particularly advantageous.

Light, electromagnetic coupling, radio waves, and the like have been proposed as means for supplying electric power and transmitting and receiving signals in a non-contact manner, but currently practically used in consideration of cost and power consumption. Most are based on the electromagnetic coupling method.

FIG. 13 shows an example of mounting electronic components on a conventionally proposed electromagnetic coupling type multi-channel non-contact memory card. As is apparent from this figure, in the memory card of this example, the coils 102a, 102b, 102c, 102d, 1 are arranged along one side of the printed circuit board 105.
02e, 102f, 102g, 102h, 102i, 1
02j is a magnetic core 10 wound in a predetermined number of turns.
3a, 103b, 103c, 103d, 103e, 10
3f, 103g, 103h, 103i, and 103j are provided, and an amplifier 116 amplifies a signal received by each coil to a predetermined voltage on the printed circuit board 105.
a, 116b, 116c, comparators 117a, 117b for converting the amplified signals into digital waveforms, a non-contact signal processing circuit 200 composed of an IC 115 for reading / writing data, and power supplied by AC. Power conversion IC1 that rectifies DC to DC and stabilizes it at a constant voltage
And a memory IC 109a, 10 such as an SRAM for storing data, for example.
9b and batteries 108a and 108b for holding data stored in the memory ICs 109a and 109b.
Has been implemented.

[0005] The magnetic cores 103a, 103b, 103c,
Coils 102a, 102b, 102c, 102 wound on 103d, 103e, 103f, 103g, 103h
d, 102e, 102f, 102g, and 102h perform exchange of an 8-bit data signal and an address signal in a parallel format, and the coil 102i wound on the magnetic core 103i receives a command signal such as read or write. is there. Further, the coil 102j wound around the magnetic core 103j receives power and a clock, so that a larger magnetic core 103j than other magnetic cores has more coils than other coils so that stable power can be received. It is wound with the number of turns.

According to the above configuration, since the magnetic cores 103a to 103j on which the coils 102a to 102j are wound are arranged on one side of the printed board 105, the mounting area for other electronic components is not sacrificed. Since a sufficient storage capacity can be secured and multi-channel parallel data transfer is possible, data transfer can be performed at high speed.

In an actual machine, the coils 102a to 102a are provided on one side of the printed circuit board 105 in order to improve productivity.
It is rare that the magnetic cores 103a to 103j around which the coils 102j are wound are individually arranged. Usually, as shown in FIG.
The non-contact connector 400 in which 03a to 103j are integrally molded is disposed on the short side of the memory card 20.
Therefore, in the following description, the non-contact connector 4
The following describes an example of the multi-channel non-contact memory card 500 provided with the “00”. However, when the multi-channel non-contact memory card 500 can be clearly distinguished from a contact type memory card (hereinafter, referred to as a “PC card”), it is simply referred to as a “memory card 20”.

FIG. 15 shows the memory card 5 shown in FIG.
00 is a perspective view showing an internal structure of a terminal that can be mounted on the memory card and a method of mounting the memory card 500 on the terminal. As is clear from this figure, the terminal 600 of this example has a card slot 6 in a part of the outer case.
01, a non-contact connector 400 'coupled to a non-contact connector 400 provided on the memory card 500, and a non-contact signal similar to the non-contact signal processing circuit 200 mounted on the memory card 500. Processing circuit 20
0 'and a dedicated non-contact socket 603 having a built-in non-contact power transmission circuit 602 for supplying power to the memory card 500 via a power supply coil provided in the non-contact connectors 400 and 400'. . Memory card 50
0 is inserted into the terminal 600 from the card slot 601 with the non-contact connector 400 inside. The memory card 400 inserted from the card slot 601 is guided to a position facing the non-contact connector 400 ′ by a card guide 604 provided in the non-contact socket 603, and is held at a predetermined position by a not-shown holding spring or the like. You. Thereby, both non-contact connectors 40
At 0,400 ', the set position in the surface direction and the gap between the magnetic cores are set within a predetermined allowable error range, and the reliability of communication is ensured.

By the way, in order to realize a memory card system using a non-contact connector, a terminal having a non-contact type socket must be adopted as a terminal.
A general terminal equipped with a contact-type socket using contact pins, which is widely used at present, cannot be used as it is. Therefore, in order to introduce a non-contact type memory card system to a user who has a contact type terminal, a terminal having a non-contact type socket must be newly introduced, and equipment costs are burdened. Is big. This causes a delay in the spread of a memory card system using a non-contact connector despite various advantages over a contact type memory card system.

[0010] The applicant of the present application has previously disclosed an adapter for connecting a contact-type joining means provided in a card slot of a terminal to a non-contact-type coupling means provided in a non-contact memory card in order to solve such inconvenience. Apparatus was developed and patent applications were filed (Japanese Patent Application Nos. 7-112563 and 8-70198).
issue).

[0011]

The use of the adapter device proposed earlier by the applicant of the present invention makes it possible to mount a non-contact memory card on a contact-type terminal. Therefore, a contactless memory card can be used without newly introducing a dedicated terminal for using the contactless memory card, and a contactless card system can be constructed at a low cost.

However, in the adapter device proposed by the applicant of the present invention, since a device for magnetically shielding the non-contact type coupling means has not been devised, a coil for electromagnetic coupling is used as the non-contact type coupling means. In this case, it has been found that the following inconveniences may occur in actual use.

That is, when a non-contact memory card is inserted with a magnetic metal housing or a PC card having a magnetic metal nameplate into one of two card slots provided adjacent to each other, only the space between the coils is provided. Since the magnetic flux to be exchanged leaks into the metal housing or nameplate, electromagnetic effects such as a change in the coupling efficiency between the coils and a change in the resonance frequency are likely to appear, which causes power shortages and communication errors. Etc. are liable to occur. In addition, when the metal chassis of the terminal device, the motor of the disk drive device, and the like are arranged near the card slot, the same disadvantages as described above occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned deficiencies of the prior art, and has as its object to provide a non-contact card system which is less susceptible to external magnetic influences, has a stable operation and is excellent in reliability. To provide an adapter device.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is provided in a contact-type coupling means and a non-contact memory card for coupling with a contact-type coupling means provided in a card slot of a terminal. An adapter device mounted on a body having a body structure capable of being inserted to a predetermined position in the card slot by using a card guide portion provided in the card slot, wherein The configuration is such that a magnetic shield member is arranged around the setting portion of the adapter device side coil mounted on the body and the non-contact memory card side coil which is electromagnetically coupled to the coil.

The adapter device-side coil and the non-contact memory card-side coil are each composed of a combination of a power supply coil and a signal transfer coil. The magnetic shield member covers both of the coils. It can also be arranged so as to cover only the periphery of the power supply coil that generates a large magnetic field. In this case, a foil or film made of a highly conductive metal material is used as the magnetic shield member.

The adapter device-side coil and the non-contact memory card-side coil are each composed of a power supply coil and a signal transfer coil. Of these two coils, at least a good conductive material is provided around the power supply coil. It is also possible to arrange a foil or a film made of a conductive metal material and a soft magnetic foil or a film made of a high-permeability alloy material at least around the signal transfer coil. . Examples of the high magnetic permeability alloy material include iron-aluminum-silicon based crystalline magnetic alloy, iron-silicon based crystalline magnetic alloy, iron-nickel based crystalline magnetic alloy, iron-based amorphous magnetic alloy, nickel-based amorphous High-quality magnetic alloys, cobalt-based amorphous magnetic alloys, and the like are preferable.

The body may be entirely formed of a non-magnetic plastic material, or a part or all of the body may be formed of a magnetic metal plate in order to enhance the magnetic shielding effect. it can.

When a foil or a film made of a highly conductive metal material such as copper or aluminum is arranged around the coil of the adapter device and the coil of the non-contact memory card, the foil is generated by an AC magnetic field generated from the coil. Alternatively, an eddy current is generated in the film body, and power is consumed by generation of Joule heat, so that magnetic leakage to the outside can be reduced. By the way, when a foil or a film made of a highly conductive metal material is arranged around each coil, the coupling efficiency between the coils can be improved as compared with a case where such a foil or a film is not arranged around each coil. Although the resonance frequency changes, if the circuit constant of the circuit including the coil is set in advance so that the required coupling efficiency and resonance frequency can be obtained with the magnetic shield member provided, the magnetic shield member can be obtained. Even if a magnetic metal body, for example, a stainless steel case or a name plate constituting a PC card, a chassis or a motor in a terminal device are arranged close to the outside, the coupling efficiency and resonance frequency of the coil hardly change. . Therefore, by previously disposing a foil or a film made of a highly conductive metal material for magnetic shielding around the setting section of the coil on the adapter device side and the coil on the non-contact memory card side, the operation stability of the coil and the non-operational stability of the coil can be improved. The reliability of the contact card system can be increased.

When a soft magnetic foil or film made of a highly conductive metal material is arranged around the coil of the adapter device and the coil of the non-contact memory card, the magnetic flux leakage outside the adapter device is reduced by the shielding effect. On the other hand, on the other hand, the influence of the leakage magnetic flux from each coil in the adapter device increases, and the jump of the leakage magnetic flux into the adjacent coil increases. In particular, the penetration of the leakage magnetic flux from the power supply coil to which a large current is applied to the signal transfer coil to which the applied current is small increases, and the reliability of communication decreases. Therefore, if a soft magnetic foil or film made of a high-permeability alloy material is arranged around the adapter device side coil and the non-contact memory card side coil, the magnetic field leaking from the coil causes the soft magnetic material made of the high magnetic permeability alloy material And a sharp magnetic flux path is formed, thereby preventing a magnetic flux from jumping into another coil and realizing highly reliable communication.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an adapter device according to the present invention will be described with reference to FIGS. 1 is a configuration diagram of a multi-channel non-contact memory card system using the adapter device of the present embodiment, FIG. 2 is an exploded perspective view of the adapter device of the present embodiment, and FIG. 3 is a cross-sectional view of the adapter device of the present embodiment. 4 is a plan view of the adapter device according to the present example, and FIG. 5 is a circuit diagram of the adapter device and the non-contact memory card according to the present example.

As is apparent from FIG. 1, the memory card system of the present embodiment uses the card slot 3 of the contact type terminal 30.
1 includes a contact-type socket 32 provided in the device 1, an adapter device 10 according to the present invention, and a multi-channel non-contact memory card 20 including a non-contact power supply connector 21 and a signal transfer connector 22. Is done.

The socket 32 has a U-shape in plan view, and a predetermined number of contact pin groups 33 are implanted in a portion facing the card slot 31. A guide groove 34 for guiding the adapter device 10 inserted from the card slot 31 to the setting portion of the contact pin group 33 is formed on the inner surface of the parallel portion arranged in the width direction of the card slot 31. ing.

As shown in FIGS. 2 to 4, the adapter device 10 has a body 13 composed of a main body 11 and a cover plate 12. The body 13 is formed in such a size and shape that it can be inserted into the socket 32 using the guide groove 34. The main body 11 can be made of any material having a required rigidity. However, since it is easy to mold and does not require an insulation treatment after molding, it should be made of a non-magnetic and insulating plastic material. Is preferred.
On the other hand, the cover plate 12 can be formed of a non-magnetic and insulating plastic material, but it is preferable that at least a part of the cover plate 12 be formed of a metal material in order to increase the rigidity of the body 13. As a metal material for forming the cover plate 12, SUS301, 3 of JIS standard is used.
Stainless steels such as 04, 631, and particularly magnetic stainless steels such as SUS301 or 631 are suitable. The cover plate 12 can be used as a name plate. The cover plate 12 is attached to the main body 11 by a known means such as screwing or snap connection.

The main body 11 is formed in a U-shape in plan view as shown in FIG. 2, and a cover plate 12 is attached to the front side and the back side of the main body 11 so that the adapter device 10 is formed. A hole-shaped memory card insertion portion 14 is formed in a portion reaching from the one end to the middle. A power supply connector 15 electromagnetically coupled to a power supply connector 21 provided on the memory card 20 is provided at a depth-side end of the memory card insertion portion 14.
On one side, the signal transfer connector 16 electromagnetically coupled to the signal transfer connector 22 provided on the memory card 20 is provided.
Is provided. The card slot 3 of the main body 11
A contact connector 17 having a jack group for mechanically coupling with a contact pin group 33 provided in a socket 32 is provided at an end on the side of insertion into the socket 1. Further, the main body 11 includes a non-contact signal processing circuit 41 having substantially the same configuration as the non-contact signal processing circuit mounted on the memory card 20;
A non-contact power transmission circuit 42 for supplying power to the memory card 20 via the power supply connectors 15 and 21 is mounted.

As shown in FIG. 5, the non-contact signal processing circuit 41 includes a signal amplifying circuit 51 for amplifying a weak signal output from the power supply connector 15 and the signal transfer connector 16 and an amplified signal. And a signal conversion logic circuit 53 for converting a signal format between a communication interface (PC card interface) of the terminal and a multi-channel non-contact data transfer. . The non-contact power transmission circuit 42 includes a transmission circuit 54 for transmitting a DC power supplied from a communication interface (PC card interface) of the terminal by electromagnetic coupling, and a power supply connector 1.
And a coil driver 55 for stably driving the power supply coil in the power supply coil 5.

As shown in FIG. 5, the signal transfer connector 16 includes a predetermined number of signal coils 16a to 16i required for performing parallel data transfer. The number of signal coils is equal to or less than the number of contact pins in the terminal communication interface. By transmitting the data signal, the address signal, and the control signal in a time-division manner and using a common coil, the number of coils can be reduced to the number of contact pins or less in the terminal communication interface. On the other hand, in the example of FIG. 5, the power supply connector 15 is a signal coil 1 constituting the signal transfer connector 16.
It is composed of one power supply coil 15a having a larger number of windings than 6a to 16i.

The memory card 20 has a width and a thickness that can be inserted into the memory card insertion portion 14, and the memory card 20 has a small width at a short side facing the power supply connector 15 provided on the adapter device 10. A power supply connector 21 having the same configuration is disposed, and a signal transfer connector 22 having substantially the same configuration is disposed on a long side portion facing the signal transfer connector 16 provided in the adapter device 10. The adapter device 1 is provided inside the memory card 20.
0, the non-contact signal processing circuit 23 having the same configuration as the non-contact signal processing circuit 42 built in
A non-contact power receiving circuit 24 for receiving power transmitted from the adapter device 10 through the flash EEPROM 5 and 21;
A memory element 25 such as an OM or an SRAM is mounted.
The non-contact signal processing circuit 23 includes a signal amplification circuit 61, a waveform shaping circuit 62, and a signal conversion logic circuit 63. The non-contact power receiving circuit 24 rectifies AC power received by the power supply coil 15a to DC. Rectifier / smoothing circuit 64
And a constant voltage circuit 65 for stabilizing the DC power supply to a constant voltage.

As shown in FIGS. 3 and 4, a memory card 20 inserted into a memory card insertion portion 14 is provided at a predetermined portion of the main body 11 and the cover plate 12 with a power supply connector 15.
Then, the elastic members 18a and 18b are pressed against the setting portion side of the signal transfer connector 16 and abutted at small intervals to maintain stable and good electromagnetic coupling. In this embodiment, the two elastic members 18 are used.
However, depending on the configuration of the memory card insertion section 14, either one of the elastic members may be omitted.

As shown in FIGS. 3 and 4, a power supply connector 15 and a signal transfer connector 16 provided on the main body 11, and a memory card electromagnetically coupled to the connector 15 are provided on the inner surface of the cover plate 12. A metal layer 19 for generating an eddy current and obtaining a magnetic shielding effect is provided in a portion covering the power supply connector 21 and the signal transfer connector 22 on the side 20.
Is formed. As a good conductor for forming the metal layer 19, a good conductive metal material such as copper or aluminum is used. The metal layer 19 has a thickness of:
It is preferable to make the thickness as thin as possible within a range where a magnetic shielding effect can be obtained. In the case of this example, the largest magnetic shielding effect can be obtained when formed to about 10 μm,
If it is set to μm, a sufficient magnetic shielding effect cannot be obtained. Further, as a method of forming the metal layer 19, a method of bonding a metal foil or a method of forming a metal thin film on the inner surface of the cover plate 12 by a vacuum film forming method such as a sputtering method or a vacuum evaporation method can be used. FIG. 3 shows an example in which a shallow dent 12a is provided on the inner surface of the cover plate 12 and the metal layer 19 is provided inside the dent 12a, but as described above, the metal layer is very thin. Dent 12
Of course, it is also possible to form the metal layer 19 directly on the inner surface of the cover plate 12 having no a.

FIG. 6 is a perspective view showing an application example of the memory card system. Reference numerals 31a and 31b denote card slots, reference numeral 71 denotes a notebook personal computer, and reference numeral 72 denotes a P-type personal computer.
A C card is shown, and other portions corresponding to those in FIG. 1 described above are denoted by the same reference numerals. This example is a PC
A notebook personal computer having card slots 31a and 31b into which two PC cards conforming to the MCIA standard can be inserted. By applying the adapter device 10 according to the present invention to one of the card slots 31a, a multi-channel non-multi-channel PC can be realized. It enables reading and writing of data using the contact memory card 20. The adapter device 10 inserts the contact type connector 17 inward into the card slot 31a and mechanically couples the jack group provided in the contact type connector 17 to the contact pin group 33 provided in the card slot 31a. Let it. Thereafter, the memory card 20 is inserted into the card slot 31a in a predetermined direction,
The power supply connector 21 and the signal transfer connector 22 provided on the memory card 20 are connected to the adapter device 1.
By magnetically coupling with the power supply connector 15 and the signal transfer connector 16 provided in the memory card 20, data can be read and written using the memory card 20.

According to the above configuration, it is possible to read and write data using the non-contact memory card 20 by using the notebook personal computer 71 configured to mount the PC card 72. There is no need to introduce 20 dedicated terminals. Therefore, the system can be effectively used, and a multi-channel non-contact memory card system can be constructed at low cost. Further, if the adapter device 10 is removed, the original PC card 72 can be used, so that either the non-contact method or the pin contact method can be selected according to the data access speed and the use environment, and the versatility is high. It can also be a system.

As shown in FIG. 6, the non-contact memory card 20 and the PC card 72 are simultaneously
Power supply connectors 15 and 21 and the signal transfer connector 1 when inserted into the card slots 31a and 31b.
When a metal body for magnetic shielding is not arranged around 6, 6 and 22, a magnetic flux to be exchanged only between the power supply connectors 15 and 21 and between the signal transfer connectors 16 and 22 is generated by the PC. The leakage to the card 72 changes the coupling efficiency and resonance frequency between the coils. As a result, inconveniences such as the inability to obtain a required power source or the required signal strength occur and communication errors are likely to occur.

In the adapter device according to the embodiment, the upper and lower surfaces of the power supply connectors 15 and 21 and the signal transfer connectors 16 and 22 are covered by the magnetic shield metal layer 19 provided on the cover plate 12. Therefore, by setting the circuit constant of the circuit including the coil in advance in the state where the metal layer 19 is provided, another conductive metal body, for example, a stainless steel plate forming the PC card 72 outside the metal layer 19 is set. Housing, nameplate, and laptop 7
Even if the first chassis is arranged in close proximity, the coupling efficiency and resonance frequency of the coil can be prevented from being greatly affected, and the operational stability of the coil and the reliability of the contactless card system can be improved. . In addition, cover plate 1
2 is formed of a metal plate, and when the metal layer 19 is formed on the cover plate 12, a disk drive motor or the like provided in the notebook computer 71 is close to the outside of the cover plate 12. Even in the case of the arrangement, the influence can be eliminated, so that the operational stability of the coil and, moreover, the reliability of the contactless card system can be further improved.

Hereinafter, another embodiment of the adapter device according to the present invention will be described with reference to FIGS.

The adapter device according to the first embodiment has a metal layer 19 covering both the setting portions of the power supply connectors 15 and 21 and the setting portions of the signal transfer connectors 16 and 22.
However, instead of such a configuration, the metal layer 19 can be formed so as to cover only the periphery of the power supply connectors 15 and 21 as shown in FIG. That is, the signal transfer connector 1 is connected to the power supply connectors 15 and 21.
Since more magnetic flux is generated from the power supply connectors 6 and 22, the coupling efficiency and the resonance frequency of the power supply connectors 15 and 21 are more affected by the surrounding magnetic environment than the coupling efficiency of the signal transfer connectors 16 and 22. Cheap. Therefore, in a case where a communication error due to a change in coupling efficiency or a change in resonance frequency does not actually occur and only a shortage of supplied power becomes a problem, the metal layer 19 covering the setting portions of the signal transfer connectors 16 and 22 is used.
Can be omitted. Other configurations are the same as those of the adapter device according to the first embodiment, and therefore, description thereof will be omitted to avoid duplication. The adapter device according to the second embodiment has the same effect as the adapter device according to the first embodiment.

In the adapter device according to the first embodiment, both the setting portions of the power supply connectors 15 and 21 and the setting portions of the signal transfer connectors 16 and 22 are made of a conductive material such as copper or aluminum. Metal layer 19 made of a metal material
In place of such a configuration, as shown in FIG. 8, the setting portions of the connectors 15, 21, 16, and 22 are made of a metal layer 19 made of a highly conductive metal material and a high magnetic permeability alloy. It can be covered with a soft magnetic foil or a laminate of the film 19a made of a material. Examples of the soft magnetic foil or film body 19a made of the high magnetic permeability alloy material include iron-aluminum-silicon based crystalline magnetic alloy, iron-silicon based crystalline magnetic alloy, iron-nickel based crystalline magnetic alloy, Iron-based amorphous magnetic alloy, nickel-based amorphous magnetic alloy,
An alloy made of a high magnetic permeability alloy material having a high magnetic permeability of tens of thousands to 300,000, such as a cobalt-based amorphous magnetic alloy, can be used. As shown in this example, each connector 15,
When the setting portions 21, 16 and 22 are covered with a laminate of a metal layer 19 made of a highly conductive metal material and a soft magnetic foil or film 19a made of a high magnetic permeability alloy material, FIG.
As shown in FIG. 3, a metal layer 19 made of a highly conductive metal material is used.
It is necessary to form the soft magnetic foil or film body 19a made of a higher magnetic permeability alloy material in a larger area. FIG.
As shown in FIG. 3, a metal layer 19 made of a highly conductive metal material is used.
Must be arranged on the side close to the setting portions of the connectors 15, 21, 16, and 22, and a soft magnetic foil or film 19a made of a high magnetic permeability alloy material needs to be arranged outside thereof. The thickness of the foil or film body 19a made of a high-permeability alloy material can be reduced as the material has a higher magnetic permeability, and may be an iron-based amorphous magnetic alloy, a nickel-based amorphous magnetic alloy, a cobalt-based alloy. When a foil or film made of an amorphous magnetic alloy is used, the thickness can be about several tens of μm. These foil bodies or film bodies 19a can also be formed in predetermined portions by bonding or vacuum film formation. Other configurations are the same as those of the adapter device according to the first embodiment, and therefore, description thereof will be omitted to avoid duplication. The adapter device according to the third embodiment includes connectors 15 and 2.
Since the setting portions 1, 16, and 22 are covered with a laminate of a metal layer 19 made of a highly conductive metal material and a soft magnetic foil or film 19a made of a high magnetic permeability alloy material, the first embodiment In addition to the same effects as the adapter device according to the example,
The magnetic flux generated from the coils constituting the connectors 15, 21, 16, and 22 is absorbed by the foil or film 19a made of a high-permeability alloy material, and a sharp magnetic flux path is formed. It is possible to prevent magnetic flux from jumping in and realize highly reliable communication with low noise. Such an effect can be further improved by configuring a part of the body 13, for example, the cover plate 12 with a magnetic material.

In the adapter device according to the third embodiment, both the setting portions of the power supply connectors 15 and 21 and the setting portions of the signal transfer connectors 16 and 22 are formed of a metal layer 19 made of a highly conductive metal material. And a foil or film body 19a made of a high-permeability alloy material, but instead of such a configuration, as shown in FIG. 10, a metal layer 19 made of a highly conductive metal material is supplied with power. Connectors 15, 21
And the foil or film 19a made of a high-magnetic-permeability alloy material may be formed only at the position covering the signal transfer connectors 16 and 22. Other configurations are the same as those of the adapter device according to the third embodiment, and therefore, description thereof will be omitted to avoid duplication.

The adapter device according to the fourth embodiment has the same effect as the adapter device according to the third embodiment.

In the adapter device according to the first to fourth embodiments, the main body 11 is formed in a U-shape.
The memory card insertion portion 14 was formed by attaching the cover plate 12 to the opening of FIG.
As shown in FIG. 1, a nameplate 81 having the same configuration as the lid plate 12 in the first embodiment can be attached to the front and back surfaces of the main body 11 integrally formed with the square hole-shaped memory card insertion portion 14. The back surface of the nameplate 81 is made of a metal layer 19 for magnetically shielding the setting portions of the power supply connectors 15 and 21 and / or the setting portions of the signal transfer connectors 16 and 22 and / or a high magnetic permeability alloy material. A foil or film 19a is formed. For other configurations, refer to
Since it is the same as the adapter device according to the embodiment, the description is omitted to avoid duplication. The adapter device according to the fifth embodiment has the same effects as those of the adapter devices according to the first to fourth embodiments.

In the adapter device according to the first to fifth embodiments, the power supply connector 15 and the signal transfer connector 16 are arranged on two orthogonal sides of the memory card insertion portion 14. When the number of the power supply connectors 15 is small, the size of the coil can be reduced, and the space for the connector mounting portion of the main body 11 is large, as shown in FIG. And signal transfer connector 1
6 (or a connector obtained by integrating these connectors) can also be arranged. In FIG. 12, the power supply connector 15 and the signal transfer connector 16 are arranged on the side of the memory card insertion unit 14, but these connectors 15, 16 can also be arranged. Other configurations are the same as those of the adapter device according to each of the above-described embodiments, and a description thereof will be omitted to avoid duplication. The adapter device according to the sixth embodiment has the same effects as those of the adapter devices according to the first to fifth embodiments.

[0042]

As described above, according to the present invention, the power supply connector setting section and / or the signal transfer connector setting section are covered with a non-magnetic good conductor and are magnetically shielded, so that the circuit constants are set in advance. Is set in accordance with this, it is possible to configure an adapter device in which the coupling efficiency between connectors and the resonance frequency are hardly affected by an external magnetic environment. Also, a power supply connector setting unit and / or
Alternatively, the signal transfer connector setting portion is covered with a foil or film made of a high-permeability alloy material and magnetically shielded, so that it is possible to absorb the leakage magnetic flux generated from each coil, and to leak the magnetic flux to an adjacent coil. Can be prevented.
Therefore, a contactless memory card system with excellent reliability, which is less likely to cause a shortage of power supply and a communication error, can be constructed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a contactless memory card system using an adapter device according to a first embodiment.

FIG. 2 is an exploded perspective view of the adapter device according to the first embodiment.

FIG. 3 is a sectional view of the adapter device according to the first embodiment.

FIG. 4 is a plan view of the adapter device according to the first embodiment.

FIG. 5 is a circuit diagram of the adapter device according to the first embodiment and a non-contact memory card applied to the adapter device.

FIG. 6 is a perspective view showing an application example of the adapter device according to the first embodiment.

FIG. 7 is a plan view of an adapter device according to a second embodiment.

FIG. 8 is a plan view of an adapter device according to a third embodiment.

FIG. 9 is a sectional view of a main part of an adapter device according to a third embodiment.

FIG. 10 is a plan view of an adapter device according to a fourth embodiment.

FIG. 11 is a plan view of an adapter device according to a fifth embodiment.

FIG. 12 is an exploded perspective view of an adapter device according to a sixth embodiment.

FIG. 13 is a perspective view showing a mounting state of electronic components of a multi-channel non-contact memory card to which a conventional electromagnetic coupling method is applied.

FIG. 14 is a perspective view of a multi-channel non-contact memory card incorporating a board on which electronic components are mounted.

FIG. 15 is a perspective view showing how the multi-channel non-contact memory card shown in FIG. 14 is mounted on a terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Adapter device 10 11 Main body 12 Lid 13 Body 14 Memory card insertion part 15 Power supply connector 15a Power supply coil 16 Signal transfer connector 16a to 16i Signal coil 17 Contact type connector 18a, 18b Elastic member 19 Good conductive material Metal layer 19a Foil or film made of high magnetic permeability alloy material 20 Multi-channel non-contact memory card 21 Power supply connector 22 Signal transfer connector 23 Non-contact signal processing circuit 24 Non-contact power receiving circuit 25 Memory element 30 Contact Terminals 31, 31a, 31b Card slot 32 Socket 33 Contact pin group 34 Guide groove 41 Non-contact signal processing circuit 42 Non-contact power transmission circuit 51 Signal amplification circuit 52 Waveform shaping circuit 53 Signal conversion logic circuit 54 Transmission circuit 55 Coil driver 61 Signal amplification times 62 waveform shaping circuit 63 a signal conversion logic circuit 64 rectifying and smoothing circuit 65 constant voltage circuit 71 notebook PC 72 PC Card

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiharu Hino 1-88 Ushitora, Ibaraki-shi, Osaka Inside Hitachi Maxell Co., Ltd.

Claims (7)

[Claims] 1. A contact type coupling means coupled to a contact type coupling means provided in a card slot of a terminal and a coil electromagnetically coupled to a coil provided in a non-contact memory card are provided in the card slot. An adapter device mounted on a body having a body structure capable of being inserted to a predetermined position in the card slot using the card guide portion, and an adapter device-side coil mounted on the body and electromagnetically coupled to the coil An adapter device, wherein a magnetic shield member is arranged around a setting portion of a non-contact memory card side coil. 2. The adapter device according to claim 1, wherein the adapter device-side coil and the non-contact memory card-side coil are respectively composed of a power supply coil and a signal transfer coil, and the magnetic shield member is provided with the magnetic shield member. An adapter device arranged only around a power supply coil. 3. The adapter device according to claim 1, wherein a foil or a film made of a highly conductive metal material is provided on the body as the magnetic shield member. . 4. The adapter device according to claim 1, wherein the adapter device-side coil and the non-contact memory card-side coil each include a power supply coil and a signal transfer coil, and at least one of these two coils is provided. A foil or film made of a highly conductive metal material is arranged around the power supply coil, and at least a soft magnetic foil or film made of a high magnetic permeability alloy material is made around the signal transfer coil. An adapter device characterized by disposing. 5. The adapter device according to claim 4, wherein the high-permeability alloy material is iron-aluminum-
Select from silicon-based crystalline magnetic alloy, iron-silicon-based crystalline magnetic alloy, iron-nickel-based crystalline magnetic alloy, iron-based amorphous magnetic alloy, nickel-based amorphous magnetic alloy, cobalt-based amorphous magnetic alloy An adapter device using at least one kind of magnetic alloy to be used. 6. The adapter device according to claim 1, wherein a part or all of the body is made of a magnetic metal plate. 7. The adapter device according to claim 1, wherein the body is integrally formed using a non-magnetic plastic material.