WO2008029461A1

WO2008029461A1 - Non-contact ic device

Info

Publication number: WO2008029461A1
Application number: PCT/JP2006/317677
Authority: WO
Inventors: Kazuya Tani; Daisuke Yamamoto; Yoshio Koyanagi
Original assignee: Panasonic Corporation
Priority date: 2006-09-06
Filing date: 2006-09-06
Publication date: 2008-03-13

Abstract

A non-contact IC device that can prevent crimes such as unauthorized reading or the like and exhibits a high level of safety with a simple structure used. In this device, an antenna (101) receives electromagnetic waves to generate an induced electromotive force. A regulation circuit (102) rectifies and then supplies the induced electromotive force generated by the antenna (101) to an IC tag (104) via a switch (105). A determining part (103) determines, according to either a depression state or a release state of a predetermined button in an operating part (120) formed on a mobile telephone unit (10), whether the condition of permitting the usage is satisfied. A switch (105) selectively connects or disconnects, based on a determination result of the determining part (103), the IC tag (104) and the regulation circuit (102).

Description

Specification

Non-contact IC device

Technical field

TECHNICAL FIELD [0001] The present invention relates to a non-contact IC (integrated circuit) device mounted on a small device such as a mobile phone, and in particular, when used as electronic money (IC tag type electronic money), a crime such as illegal reading. The present invention relates to a non-contact type IC device that prevents the above-described problem.

Background art

[0002] Conventionally, contact IC cards equipped with integrated circuits (ICs) have been common, but in recent years, non-contact IC cards have been used for train tickets because of their convenience. Primarily, it has begun to penetrate widely. In the future, the use of mobile phones equipped with contactless IC tags is expected to expand, and the use of electronic money is expected to become more common. As a non-contact type IC tag technology, one that can exchange data by holding it over a reading terminal is known. For example, the drive voltage of an IC tag uses an internal coiled antenna to generate an induced electromotive force, so that it operates without a power supply, and performs mutual judgment and encryption of communication data. Non-contact IC tags that actually ensure higher safety are actually used.

[0003] In addition, since the contactless card exchanges data with the reader Z writer without contact, there are concerns about crimes such as sneaking (skimming) without the user's knowledge. Therefore, a safety function that can be reassured by the user is required for further dissemination, and various things that improve the safety function have been proposed. For example, in the non-contact type IC label disclosed in Patent Document 1, a safety function using a sheet or the like that blocks radio waves has been proposed. The non-contact type IC card disclosed in Patent Document 2 stores biometric information unique to the owner and receives the electromagnetic waves of the reader Z writer force or collates the user's fingerprint with a reader provided on the card. , Eliminate unauthorized use by non-owners. Furthermore, the contactless IC card disclosed in Patent Document 3 inputs the biometrics information of the person to be judged and compares it with the verification information.

The security strength of the card-type storage medium is increased by outputting the secret information about the owner to the outside only when the Z matches and the two match. Patent Document 1: JP 2004-310479 A

Patent Document 2: JP 2005-182566 A

Patent Document 3: International Publication No. 2004Z023390 Pamphlet

Disclosure of the invention

Problems to be solved by the invention

[0004] However, over the non-contact IC label proposed in Patent Document 1, it is necessary to provide a non-contact IC mounting device with a sheet or the like for shielding electromagnetic waves. This is inconvenient due to the breakage of the shielding sheet. In addition, as described in Patent Documents 2 and 3, when collation is performed using biometric information, the convenience of being able to make a small settlement immediately is lost, and biometric information is recognized and approved. In addition, control including non-contact type IC requires an external power supply, and it is impossible to use without battery!

[0005] Therefore, an object of the present invention is to provide a non-contact IC device that can prevent crimes such as unauthorized reading and has high safety with a simple configuration.

Means for solving the problem

[0006] The non-contact type IC device of the present invention uses an acquisition unit that acquires device information indicating a use state of a mounted device, and whether or not a use permission condition is satisfied by using the acquired device information. A configuration is adopted that includes a determination unit that performs a determination, and a switching unit that switches between enabling or disabling the communication between the IC tag and the outside based on the determination result of the determination unit. The invention's effect

[0007] According to the present invention, it is determined whether or not the use permission condition is satisfied by using the device information indicating the use state of the mounted device, and only when the use permission condition is satisfied, the contactless IC Make the device communicable with the outside and do not satisfy the conditions for use! In non-contact cases, the non-contact IC device cannot be communicated with the outside, so that the probability of unauthorized reading can be minimized, and a highly secure and non-contact IC device is realized with a simple configuration. can do. Examples of device information include button status, position status, and open / close status.

Brief Description of Drawings

FIG. 1 is a block diagram of a mobile phone equipped with a non-contact IC device according to Embodiment 1 of the present invention. Figure

FIG. 2 is a flowchart showing switching processing of the non-contact IC device according to Embodiment 1 of the present invention. FIG. 3 is a block diagram of a mobile phone equipped with the non-contact IC device according to Embodiment 2 of the present invention. Figure

FIG. 4 is a flowchart showing switching processing of the non-contact IC device according to Embodiment 2 of the present invention. FIG. 5 is a perspective view of a mobile phone equipped with the non-contact IC device according to Embodiment 3 of the present invention. Figure

FIG. 6 is a perspective view of a modification of the mobile phone equipped with the non-contact IC device according to Embodiment 3 of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of a non-contact IC device according to the present invention will be described with reference to the drawings.

[0010] (Embodiment 1)

FIG. 1 is a block diagram of a mobile phone 10 equipped with a non-contact IC device 100 according to an embodiment of the present invention. As shown in FIG. 1, the mobile phone 10 includes, as characteristic components of the mobile phone, an antenna 111, a transmission / reception processing unit 112, a modulation / demodulation processing unit 113, a data processing unit 114, a DZA modulation unit 115, A speaker 116, an AZD converter 117, a microphone 118, a display unit 119, and an operation unit 120 are provided. Since these components are realized by conventional well-known techniques, detailed description thereof is omitted.

The non-contact type IC device 100 includes an antenna 101, an adjustment circuit 102, a determination unit 103, an IC tag 104, and a switching switch 105. Note that the non-contact type IC device according to the present embodiment is not limited to a mobile phone, but is also applicable to small devices including product tags, PDAs (Personal Digital Assistants), automobile keys, and the like.

[0012] The antenna 101 is a coiled loop antenna, and receives an electromagnetic wave and generates an induced electromotive force when it is close to an external reader / writer. The induced electromotive force is used as a power source for the non-contact type IC device 100 to supply power, and the antenna 101 transmits and receives signals when the non-contact type IC device 100 can communicate with the outside. That is, the antenna 101 is not only a power supply unit but also a transmission / reception unit. The adjustment circuit 102 adjusts the impedance of the antenna 101, rectifies the induced electromotive force generated by the antenna 101, and supplies it to the IC tag 104 via the switching switch 105.

[0014] The determination unit 103 is a non-contact type IC depending on whether a predetermined button (hereinafter referred to as “dedicated button”) in the operation unit 120 provided in the mobile phone 10 is pressed (on) or released (off). It is determined whether or not the use of the device 100 is permitted, and the connection or disconnection of the switching switch 105 is controlled based on the determination result. Specifically, when the dedicated button is pressed, it is determined that use of the non-contact type IC device 100 is permitted, and an instruction to switch to connection is output to the switch 105. On the other hand, if the dedicated button is opened, it is determined that use of the non-contact IC device 100 is permitted, and when switching to disconnection, the! /, Instruction is output to the switch 105.

IC tag 104 is a non-contact IC tag that performs communication without contacting an external reader Z writer. The IC tag 104 includes a CPU (Central Processing Unit) that controls the information transfer process, a cryptographic processor that is a dedicated processor for executing calculations at high speed, and various memories (RAM, ROM, etc.) that store programs and data. EEPROM). Usually, for sophisticated and complex systems such as money processing, a faster CPU and a larger amount of memory are used.

The switching switch 105 is provided between the adjustment circuit 102 and the IC tag 104, and switches between the IC tag 104 and the adjustment circuit 102 according to an instruction from the determination unit 103. Specifically, when the use of the non-contact type IC device 100 is permitted, the switching switch 105 connects between the adjustment circuit 102 and the IC tag 104 according to an instruction from the determination unit 103. On the other hand, when the use of the non-contact type IC device 100 is not permitted, the switching switch 105 disconnects between the adjustment circuit 102 and the IC tag 104 according to an instruction from the determination unit 103.

Next, switching processing of the non-contact IC device 100 having the above configuration will be described with reference to FIG. FIG. 2 is a flowchart showing the switching process of the non-contact IC device 100 according to the first embodiment.

[0018] When an induced electromotive force is generated by the antenna 101 (S1011; YES), the process starts.

First, the determination unit 103 determines whether or not to permit use of the non-contact type IC device 100 based on the state of the dedicated button (S1012). The decision unit 103 uses the non-contact IC device 100. When it is determined that the use is permitted (S1012; YES), the switching switch 105 connects between the adjustment circuit 102 and the IC tag 104 (S1013). In this case, the non-contact IC device 100 can communicate with the outside, transmit / receive to / from the external reader Z-rata, and use functions such as electronic money. Thereafter, when no induced electromotive force is generated by the antenna 101 (S1 014; YES), the process is terminated. That is, while the induced electromotive force is generated by the antenna 101 (S1014; NO), the non-contact IC device 100 can communicate with the outside.

On the other hand, when determining unit 103 determines that use of non-contact IC device 100 is not permitted

(S1012; NO), the switch 105 disconnects between the adjustment circuit 102 and the IC tag 104 (S1015). In this case, the non-contact type IC device 100 cannot communicate with the outside, and functions such as electronic money cannot be used.

As described above, according to the present embodiment, determination unit 103 mechanically adjusts adjustment circuit 102 by means of switching switch 105 based on the state in which the dedicated button provided on mobile phone 10 is pressed Z is released. And the IC tag 104 are switched to connection or disconnection. As a result, the switch 105 that does not require an external power supply can be used to switch the non-contact IC device to or from the outside so that it is possible to prevent crimes such as unauthorized reading. In addition, it is possible to realize a highly safe non-contact IC device that can be used without a power supply with a mechanical configuration.

In the present embodiment, the dedicated button has been described by taking the push-down button as an example. However, the present invention is not limited to this, and a slide-type button may be used.

Further, in the present embodiment, the force described by taking as an example that the determination unit 103 and the switching switch 105 operate mechanically is not limited thereto, and the electrical operation is performed using the induced electromotive force generated by the antenna 101. A determination unit and a switching circuit may be used.

[0023] For example, when an induced electromotive force is generated, the determination unit 103 determines whether or not the number input by the operation unit 120 of the mobile phone 10 matches the password registered in advance, and the determination result Based on the above, the switching circuit switches between the adjustment circuit 102 and the IC tag 104 to connection or disconnection. On the other hand, when no induced electromotive force is generated, both the determination unit and the switching circuit do not operate, that is, the adjustment circuit 102 and the IC tag 104 are disconnected. [0024] According to this configuration, when an induced electromotive force is generated by the antenna 101, the determination unit and the switching circuit first operate, and when the determination unit 103 permits the use, the switching circuit includes the adjustment circuit 102 and the IC tag. By connecting to 104, electric power is supplied to the adjustment circuit 102 and the IC tag 104, that is, the contactless IC device 100 can communicate with the outside. When the induced electromotive force is not generated from the antenna 101, or the induced electromotive force is generated from the antenna 101, but the determination unit 103 does not permit the use of the non-contact IC device 100, the switching circuit is connected to the adjustment circuit 102 and the IC. Disconnecting from the tag 104, power is not supplied to the adjustment circuit 102 and the IC tag 104, that is, the non-contact IC device 100 cannot communicate with the outside. For this reason, the use of the non-contact type IC device 100 can be controlled electrically by the determination unit 103 and the switching circuit that do not require an external power source, and furthermore, a low-power electric component is also provided in the determination unit. Since it can be used, the decision function can be digitized and enhanced.

[0025] Further, the non-contact IC device 100 according to the present embodiment may further include a display unit. This display unit displays the determination result by lighting or dark light according to the determination result of the determination unit 103.

[0026] According to this configuration, the user can accurately grasp the determination result, and troubles such as a determination error can be avoided.

[Embodiment 2]

FIG. 3 is a block diagram of mobile phone 20 equipped with non-contact IC device 200 according to the second embodiment.

In the mobile phone 20 of FIG. 3, the same parts as those of the mobile phone 10 of FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. As shown in FIG. 3, the mobile phone 20 further includes a GPS unit 210 as compared with the mobile phone 10 of FIG. The non-contact type IC device 200 includes a determination unit 203 having a different function instead of the determination unit 103 in the configuration of the non-contact type IC device 100 of FIG.

The GPS unit 210 is a system that determines the position of a person or an object using an artificial satellite. Here, the location information of the mobile phone 20, that is, the owner is acquired and reflected in a pre-registered map. The location information reflected on the map is output to the determination unit 203.

[0030] The determination unit 203 includes a plurality of convenience stores and stations shown on the map, that is, It includes a memory that stores information on a predetermined location where the non-contact IC device 200 may be used. Based on the location information input from the GPS unit 210, the determination unit 203 determines whether or not to permit the use of the non-contact type IC device 200, and based on the determination result, the connection of the switching switch 105 or Control cutting. Specifically, if the location information acquired by the GPS unit 210 matches the information of a predetermined location stored in the memory, it is determined that the use of the non-contact IC device 200 is permitted and the connection is established. The switch instruction is output to switch 105. On the other hand, if it does not match the location information stored in the location information memory acquired by the GPS unit 210, it is determined that the use of the non-contact IC device 200 is permitted! An instruction to switch is output to switch 105. That is, the switching switch 105 is controlled by determining whether the user of the mobile phone 20 is in a predetermined place.

Next, switching processing of the non-contact type IC device 200 will be described with reference to FIG. FIG. 4 is a flowchart showing a switching process of the non-contact IC device 200 according to the second embodiment.

[0032] When the power of the mobile phone 20 is turned on, the processing is started. First, the GPS unit 210 acquires the location information of the mobile phone 20 (S2011), and outputs it to the determination unit 203. Based on the location information input from the GPS unit 210, the determination unit 203 determines whether or not the use permission condition is satisfied (S2012). When the determination unit 203 determines that the use permission condition is satisfied (S2012; YES), the switching switch 105 connects the adjustment circuit 102 and the IC tag 104 (S2013). In this case, the non-contact type IC device 200 can communicate with the outside, transmit / receive to / from the external reader Z writer, and use functions such as electronic money. Thereafter, when the power is turned off (S2014; YES), the process is terminated. That is, the non-contact IC device 200 can communicate with the outside while the power of the mobile phone 20 is ON (S2014; NO).

On the other hand, when the determination unit 203 determines that the use permission condition is not satisfied (S2012; NO), the switching switch 105 disconnects between the adjustment circuit 102 and the IC tag 104 (S2015). In this case, the contactless IC device 200 cannot communicate with the outside, and functions such as electronic money cannot be used. Thus, according to the present embodiment, whether or not the determination unit 203 permits use based on the location information acquired using the GPS function or the like already provided in the mobile phone 20 is determined. The switching switch 105 switches between the adjustment circuit 102 and the IC tag 104 to connection Z disconnection according to the determination result. That is, when the owner of the mobile phone 20 is not located at a predetermined location, the non-contact IC device 200 can be made incapable of communication with the outside. For this reason, a non-contact IC device with a high degree of safety can be realized by swift judgment processing by combining with the functions provided in the mobile phone installed without requiring another authentication means. it can.

In the present embodiment, the determination unit 203 has been described using the location information such as GPS, but the tilt information of the mobile phone 20 may be used instead of the location information. . Specifically, the mobile phone 20 is provided with a gyro sensor, and the mobile phone 20 detects a tilt relative to a horizontal plane or a predetermined reference object, and outputs the detected tilt information to the determination unit 203. The memory stores the tilt information of the reader Z writer. The determination unit 203 determines whether the inclination of the mobile phone 20 detected by the input gyro sensor is a constant angle while referring to the inclination information of the reader Z writer read from the memory. That is, it is determined whether or not the contactless IC device 200 is held over the reader Z writer. Based on the determination result, the adjustment circuit 102 and the IC tag 104 are switched between connection and disconnection. As a result, the contactless IC device 200 can be made incommunicable with the outside except when the mobile phone 20 has a predetermined inclination, so that the same effect as when using location information can be obtained. it can.

[0036] (Embodiment 3)

FIG. 5 is a perspective view of a mobile phone equipped with the non-contact IC device according to Embodiment 3 of the present invention. The non-contact type IC device 300 according to the present embodiment includes an antenna 101, an adjustment circuit 102, a determination unit 303, an IC tag 104, and a switching unit 305. In the non-contact type IC device 300 of FIG. 5, the same parts as those of the non-contact type IC device 100 shown in FIG.

The determination unit 303 determines whether or not to permit the use of the non-contact type IC device 300 based on the open / closed state of the foldable mobile phone 30. Specifically, the folding mobile phone 30 If it is open, it is determined that use of the non-contact IC device 300 is permitted, and an instruction to switch to connection is output to the switching unit 305. On the other hand, when the foldable mobile phone 30 is closed, it is determined that the use of the non-contact IC device 300 is not permitted, and an instruction to switch to disconnection is output to the switching unit 305.

[0038] Switching section 305 is provided in antenna 101, and switches antenna 101 to operable Z incapable of changing the electrical state of antenna 101, that is, impedance, in accordance with an instruction from determining section 303. Specifically, the antenna element shape of a part of the antenna 101 is changed, for example, the antenna element is switched to contact or non-contact with the GND (ground) part.

Next, the operation of the non-contact type IC device 300 will be described with reference to FIGS. 5 and 6, respectively, according to the shape of the mobile phone to be mounted.

FIG. 5 is a perspective view of a two-axis hinged portable telephone 30 equipped with the non-contact IC device 300 according to the present embodiment. When the antenna 101 is provided on the entire inner surface of the casing (folding part) 31 of the mobile phone 30 (the surface that matches the casing 32 when closed), the mobile phone 30 is not used, and the casing 31 is closed The determination unit 303 determines that the non-contact type IC device 300 is not permitted to be used, and the switching unit 305 makes the antenna element non-contact with the GND unit. Since the performance of the contactless IC device 300 is insufficient, the non-contact IC device 300 cannot communicate with the outside.

[0041] On the other hand, when mobile phone 30 is used and case 31 is open, determination unit 303 determines that use of non-contact IC device 300 is permitted, and switching unit 305 determines that the antenna element is GN D By making contact with the part, the characteristics of the antenna 101 become normal, so that the non-contact type IC device 300 can communicate with the outside.

FIG. 6 shows a slide-type mobile phone 40 on which the non-contact IC device 300 according to the present embodiment is mounted as a modification of the present embodiment. When the slide-type mobile phone 40 is not used and the housing (slide part) 41 is closed, the judgment part 303 judges that the non-contact IC device 300 is not allowed to be used, and the switching part 305 By making the element non-contact with the GND portion, the antenna 101 is switched to be inoperable, and the non-contact type IC device 300 cannot communicate with the outside. [0043] On the other hand, when the slide-type mobile phone 40 is used and the housing 41 is open, the determination unit 303 determines that the use of the non-contact IC device 300 is permitted, and the switching unit 305 sets the antenna element to GND. By making contact with the unit, the antenna 101 is switched to be operable, and the non-contact type IC device 300 can communicate with the outside.

As described above, according to the present embodiment, when the mobile phone is not used, the electric characteristics such as the VSWR (Voltage Standing Wave Ratio) which is the impedance characteristic of the antenna 101 are mismatched, and the antenna is almost completely set. The function is lost. On the other hand, when the mobile phone is used, the antenna characteristics are temporarily restored to restore the antenna function. In this way, the antenna 101 can be switched to be operable, so that crimes such as unauthorized reading can be prevented, and a non-contact IC device that can be matched to the external shape of the mounted small device has been realized. can do.

In the present embodiment, changing the shape of a part of the antenna element of the antenna 101 has been described by taking an example of switching the antenna element to the GND portion and contact Z non-contact, but the present invention is not limited to this. First, the antenna element may be switched to contact or non-contact with the internal members (conductor, non-conductor) of the mounted device.

[0046] From the above description, the non-contact type IC device of the present invention determines whether or not the power permission condition is satisfied based on the acquired usage state of the mounted device, and according to the determination result, By switching the non-contact type CI device to be able to communicate with the outside or impossible, the probability of unauthorized reading is minimized, so a highly secure non-contact type IC device can be realized with a simple configuration. .

Industrial applicability

[0047] The non-contact type IC device of the present invention is effective for small-scale settlement and is effectively applied to a small device having an electronic money function that requires a high level of safety.

Claims

The scope of the claims

[1] An acquisition means for acquiring device information indicating a usage state of the mounted device;

A determination means for determining the power / unavailability that satisfies the use permission condition using the acquired device information;

Switching means for switching between enabling and disabling communication between the IC tag and the outside based on the determination result by the determining means;

Non-contact IC device comprising

[2] The device information is information indicating the on / off state of a predetermined button provided on the mounted device,

The determination means determines that the use of the non-contact type IC device is permitted when the button is inserted, and determines that the use of the non-contact type IC device is not permitted when the button is disconnected. ,

The non-contact type IC device according to claim 1.

[3] The device information is information indicating a location of the device to be mounted,

The determination means determines that the use of the non-contact IC device is permitted when the device information is stored in the memory in advance and matches the information of the predetermined location, and the device information is stored in the memory in advance. If it does not match the information of the specified location, it is determined that the use of the non-contact IC device is not permitted.

The non-contact type IC device according to claim 1.

[4] The device information is information indicating an open / closed state of the mounted device,

The determination means determines that the use of the non-contact IC device is permitted when the device is open, and determines that the use of the non-contact IC device is not permitted when the device is closed. Non-contact IC device as described.

[5] The switching means is a switching switch, and mechanically switches the circuit in the non-contact IC device to connection or disconnection.

The non-contact type IC device according to claim 1.

[6] An antenna for receiving an electromagnetic wave to generate an induced electromotive force and transmitting / receiving to / from the outside, The non-contact type IC device according to claim 1, wherein the determination unit performs determination using an induced electromotive force generated by the antenna.

[7] The switching means switches the antenna to be operable or impossible by matching or mismatching the electrical characteristics of the antenna.

The non-contact type IC device according to claim 6.

[8] Display means for displaying whether or not use of the non-contact type IC device is permitted according to the determination result by the determination means,

The non-contact type IC device according to claim 1, further comprising: