KR100724058B1 - RFID Card Having Switching Means - Google Patents

Abstract

[0001] The present invention relates to an RFID card having switching means for controlling operation according to a user's intention, and more particularly, to an RFID card having a memory unit, a central processing unit or an RF connection between an RF antenna unit and a central processing unit The present invention relates to an RFID card having a switching means interposed therebetween so as to control the operation of the RFID card according to a user's intention, thereby preventing malfunction such as information leakage or double payment.

In order to achieve the above and other objects, the present invention provides a radio communication system including a memory unit for storing data, an RF antenna unit for transmitting / receiving a radio signal to / from the outside, A switching unit is provided between the central processing unit electrically connected to the memory unit and the central processing unit electrically connected to the RF antenna unit, Respectively.

Switching unit, RFID, memory unit, RF antenna unit

Description

[0001] The present invention relates to an RFID card Having Switching Means,

1 is a schematic configuration diagram of a general RFID card.

2 is a schematic view showing the inside of an RFID card in which a loop antenna is formed;

3 is a view showing a state where a moving piece and a conductor are formed on an RFID card according to the first embodiment of the present invention.

4 is a perspective view showing a combined state of a moving piece and a conductor.

5 illustrates an RFID card in which a moving piece and a conductor are formed between a central processing unit and an RF antenna according to an embodiment of the present invention.

FIG. 6 is a view showing an RFID card in which an optical sensor as a switching means and a contact / desorption sticker are formed according to another embodiment of the present invention. FIG.

FIG. 7 is a cross-sectional side view of an RFID card having a push button as a switching means according to another embodiment of the present invention. FIG.

8 is an operational state diagram of Fig.

9 is a view showing an RFID card according to a second embodiment of the present invention.

10 is a view showing an RFID card according to a third embodiment of the present invention.

Description of the Related Art

10: memory 20: RF antenna

21: Receiving unit 22:

30: central processing unit 41: moving piece

42: conductor 45: light sensor

46: engaging / disengaging sticker 50: guide groove

60: logic circuit portion 70: push button

71: protrusion 72: insulated coating layer

73a: first connection terminal 73b: second connection terminal

74: Support part 100: RFID card

[0001] The present invention relates to an RFID card having switching means for controlling operation according to a user's intention, and more particularly, to an RFID card having a memory unit, a central processing unit or an RF connection between an RF antenna unit and a central processing unit The present invention relates to an RFID card having a switching means interposed therebetween so as to control the operation of the RFID card according to a user's intention, thereby preventing malfunction such as information leakage or double payment.

In recent years, an RFID (Radio Frequency IDentification) system, which automatically recognizes an object in a non-contact manner and performs authentication and payment of an object, is gradually getting popular.

In the case of magnetic recognition or barcode recognition system, a certain external indication is required, and the recognition rate gradually decreases with time due to weakening of magnetic field, damage or breakage, while the RFID system can overcome such a disadvantage.

The RFID system is emerging as a new solution for various automation business, distribution business, livestock management, access control, attendance management, logistics management, parking management, etc. Specifically, for example, a credit / debit card, A bus, a subway card, a card for entering a parking lot, a department store card, a genuine manufacturer on a conveyor belt, a postal service system, and an identification table for recording animal information.

FIG. 1 is a schematic view of a general RFID card, and FIG. 2 is a view schematically showing the inside of an RFID card in which a loop antenna is formed.

Referring to FIG. 1, an RFID card generally includes a memory unit 1 for storing data, an RF antenna unit 2 for transmitting / receiving a radio signal to / from the outside, and a memory unit 1 and an RF antenna unit 2 And a central processing unit 3 for receiving data from the RF unit 2 and performing calculation and judgment, and controlling the memory unit 1 and the RF antenna unit 2.

The RF antenna unit 2 is divided into a receiving unit 2a for receiving a radio signal from an external RF reader and a transmitting unit 2b for transmitting data in the RFID card to an RF reader.

Accordingly, when the central processing unit 3 receives the radio signal from the external RF reader, the central processing unit 3 transmits the data stored in the memory unit 1 through the transmitter 2b in response to the radio signal.

The transmission of the data stored in the storage device in the RFID card through the RFID reader may be performed even when the user of the RFID card contradicts the intention of the user of the RFID card, thereby causing data in the RFID card to be leaked or charged.

For example, if a user who has two or more RFID cards pays through an RFID reader to pay a specific fee, there may be a problem that two or more RFID cards possessed by the user operate to pay an unnecessary fee .

In addition, the RFID card stores various data corresponding to the privacy of an individual, and the problem becomes even worse because there is no way to prevent unauthorized withdrawal through the RFID reader.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems, and it is an object of the present invention to provide a radio frequency identification And it is an object of the present invention to provide an RFID card having switching means capable of preventing malfunction such as information leakage or double payment by controlling the operation of the card.

The present invention has the following features in order to achieve the above object.

The present invention includes a memory unit for storing data and an RF antenna unit for transmitting / receiving a radio signal to / from the outside, and a connection is selectively established between the RF antenna unit electrically connected to the memory unit and the RF antenna unit. Switching means is interposed and controlled so as to be controlled.

A memory unit for storing data and an RF antenna unit for transmitting / receiving an external radio signal; And a central processing unit that receives data from the memory unit and the RF antenna unit, performs calculation and determination, and controls the memory unit and the RF antenna unit. The central processing unit is electrically connected to the memory unit, Or between the RF antenna unit and the central processing unit electrically connected to each other.

A memory unit for storing data and an RF antenna unit for transmitting / receiving an external radio signal; And a logic circuit unit interposed between the memory unit and the RF antenna unit. The switching unit is connected to the logic circuit unit and includes switching means for selectively opening and closing the electrical connection between the memory unit and the RF antenna unit.

The switching means may include a moving piece slidingly connected to a guide groove formed on one side of the RFID card and partially protruding outwardly so as to be adjustable by a user and an electric connection fixedly coupled to the moving piece, And a conductor for opening and closing.

The switching means includes an optical sensor for controlling current flow according to the amount of light received and a light adjusting means for controlling the sealing and exposure of the optical sensor to adjust the amount of light received by the optical sensor, And the adjusting means is a touching / releasing sticker which adheres to the upper side of the optical sensor exposed to the outside of the RFID card and closes or is detached and exposed.

The switching means may include a semicircular pushbutton made of a conductive material having a projection formed with an insulating coating layer thereon so as to be insulated therefrom, a first connection terminal fixedly coupled to one side of the pushbutton, And a second connection terminal fixedly supported on a lower side of the protruding portion via a supporting portion and provided so as to be in electrical contact with the protruding portion due to the lowering due to the pressing of the protruding portion.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

(Example 1)

FIG. 3 is a view showing a state where a moving piece and a conductor are formed on an RFID card according to a first embodiment of the present invention, FIG. 4 is a perspective view showing a combined state of the moving piece and the conductor, FIG. 6 is a view showing an RFID card in which a moving piece and a conductor are formed between a central processing unit and an RF antenna according to an embodiment of the present invention. FIG. 7 is a side view of an RFID card having a push button as a switching means according to another embodiment of the present invention, and FIG. 8 is an operational state diagram of FIG.

A memory unit 10 for storing data; an RF antenna unit 20 for transmitting / receiving a radio signal to and from the outside; a memory unit 10 and an RF A central processing unit 30 for receiving data from the antenna unit 20 to perform calculation and determination and controlling the memory unit 10 and the RF antenna unit 20; And a switching means interposed between the central processing unit 30 or the central processing unit 30 electrically connected to the RF antenna unit 20 so that connection is selectively controlled.

Here, the memory unit 10 is a storage device in which data is stored. The memory unit 10 may be any one selected from EEPROM, ROM, and RAM, or a combination thereof. .

The EEPROM or the ROM is a nonvolatile memory, and stored data is stored regardless of the power-off, and the EEPROM can erase or newly store the stored data through an electrical method.

On the other hand, the RAM is erased when power is turned off as data stored as volatile memory, so that the central processing unit is provided with a temporary storage of immediate data necessary for calculation or processing.

Therefore, it is preferable that the unique ID data of the RFID card 100 or the personal information of the user is stored in the ROM or the EEPROM.

Meanwhile, the RF antenna unit 20 is a passive element capable of transmitting or receiving an electromagnetic wave signal according to the electromagnetic induction principle in an electromagnetic field. The RF antenna unit 20 is a loop antenna capable of transmitting / receiving signals satisfactorily, ), And it is more preferable to use a loop antenna in the form of a printed circuit board among various types of loop antennas.

The loop antenna in the form of a printed circuit board is a circuit obtained by etching a metal film formed on a substrate which is a thin film of polyethylene terephthalate resin (PET).

The RF antenna unit 20 is divided into a receiving unit 21 for receiving a radio signal from an external RF reader and a transmitting unit 22 for transmitting data in the RFID card by an RF reader. It goes without saying that it depends on the kind.

The central processing unit 30 is a device for reading programs and various data stored in the memory 10, performing necessary calculations and judgments, and performing various controls.

Here, the central processing unit 30 may be electrically connected to the memory 10 and the RF antenna unit 20 so as to receive the stored data or transmit / receive data to / from the outside through a wireless signal.

The switching means is connected between the central processing unit 30 electrically connected to the memory unit 10 or the central processing unit 30 electrically connected to the RF antenna unit 20, So as to be controlled.

The switching means according to an embodiment of the present invention includes a moving piece 41 slidingly connected to a guide groove 50 formed at one side of the RFID card 100 and partially protruding outwardly so as to be adjustable by a user, The electrical connection between the memory unit 10 and the central processing unit 30 or between the RF antenna unit 20 and the central processing unit 30 is performed in accordance with the sliding movement of the moving piece 41 And a conductor 42 that opens and closes.

Here, protrusions or grooves may be regularly arranged on the protruding surface of the moving piece 41 so that the user can easily adjust the movement.

The conductor 42 fixedly coupled to the moving piece 41 is electrically disconnected from the memory unit 10 and the central processing unit 30 or the RF antenna unit 20 and the central processing unit 30 And is configured to cause connection or disconnection according to the movement of the moving piece 41. [

Accordingly, when the connection circuit is disconnected, information data in the RFID card can not be transmitted in response to an external radio signal, thereby preventing information leakage against the user.

The central processing unit 30 or the RF antenna unit 20 and the central processing unit 30 are connected to each other so that connection or disconnection can be selected as the conductor 42 fixedly coupled with the moving piece 41 moves together. It is a matter of course that some disconnected connection circuits between the processing apparatuses 30 are located and configured.

The switching unit according to another embodiment of the present invention is connected between the memory unit 10 and the central processing unit 30 or between the RF antenna unit 20 and the central processing unit 30 and controls the flow of current according to the amount of light received And a light adjusting means for controlling the sealing and exposure of the light sensor 45 so as to adjust the amount of light received by the light sensor 45.

Here, the optical sensor is provided to adjust the current value according to the amount of received light, and the current value can be adjusted by changing the resistance value according to the amount of received light.

Such photo sensors include photo diodes, photo TRs, CdS (cadmium sulfide), and solar cells. CdS, which has high sensitivity and can operate without an external power source, is preferred.

The CdS is a material having electrical conductivity in a dark place and close to an insulator and is conductive in a bright place. The CdS is electrically connected to the memory unit 10, the central processing unit 30 or the RF antenna 20 and the central processing unit 30, It is possible to open and close the electrical connection between the electrodes.

The light control unit is preferably a touching / detaching sticker 46 that is attached to the upper side of the light sensor 45 exposed to the outside of the RFID card 100 to seal or detach and expose the light sensor 45. In addition, It is possible to control the sealing or the exposure of the optical sensor 45 by forming a guide path on the top surface of the RFID card and forming an optical sensor cover slidingly coupled with the guide path.

When the optical sensor 45 is exposed to light, the optical sensor 45 becomes conductive, thereby electrically connecting the memory unit 10, the central processing unit 30 or the RF antenna unit 20 and the central processing unit 30, When it is cut off from the light, it functions as an insulator so that the memory unit 10 and the central processing unit 30 or the RF antenna unit 20 and the central processing unit 30 are electrically opened.

 The switching means according to another embodiment of the present invention is provided with a switching means for isolating the upper portion of the memory unit 10 and the central processing unit 30 or the RF processing unit 30 so as to open and close the electrical connection between the RF antenna unit 20 and the central processing unit 30. [ A semicircular pushbutton 70 having a protrusion 71 formed with a coating layer 72 and made of a conductive material capable of conducting electricity to the protrusion 71 and a first connection fixedly coupled to one side of the pushbutton, A terminal 73a fixed to the lower portion of the protruding portion 71 by a supporting portion 74 and a second connecting terminal 72a provided so as to be electrically connected to the protruding portion 71 by the downward movement of the protruding portion 71 73b.

The semicircular pushbutton 70 is fixed to the lower side of the protruding portion 71 when the protruding portion 71 fixedly connected to the first connection terminal 73a is pressed by a predetermined external pressure And is configured to be connected to the second connection terminal 73b to be energized.

It is possible to control the opening and closing of the electrical connection between the memory unit 10 and the central processing unit 30 or the RF antenna unit 20 and the central processing unit 30 in accordance with the physical pressure of the push button 70 do.

Here, the conductor constituting the push button 70 is preferably made of a shape memory alloy material so that it is restored when the pressing is released.

Also, an insulating coating layer 72 is formed on the upper surface of the protrusion 71, thereby preventing the electric connection with the outside, thereby preventing the risk of electric shock.

(Example 2)

9 is a view showing an RFID card according to a second embodiment of the present invention.

Referring to FIG. 1, the present embodiment mainly includes a memory unit 10 for storing data, an RF antenna unit 20 for transmitting / receiving a radio signal to / from the outside, a memory unit 10, 20, which are opened and closed in accordance with the selection.

The RFID card 100 including the memory unit 10 and the RF antenna unit 20 according to the present embodiment is configured to transmit a radio signal from an external RF reader and transmit data of the memory unit 10. [

The switching unit disclosed in the first embodiment is interposed between the memory unit 10 and the RF antenna unit 20 so that external radio signals can be transmitted to control the data transmission in the memory unit 10. [ Of course.

(Example 3)

10 is a view showing an RFID card according to a third embodiment of the present invention.

Referring to FIG. 1, the present embodiment mainly includes a memory unit 10 for storing data, an RF antenna unit 20 for transmitting / receiving a radio signal to / from the outside, a memory unit 10, And a switching unit connected to the logic circuit unit to selectively control an electrical connection between the memory unit and the RF antenna unit. The switching unit includes a logic circuit unit interposed between and connected to the logic circuit unit, .

Here, the logic circuit unit 60 is composed of a simple logic circuit that performs a simple logical operation as compared with the operation and determination of the central processing unit 30 described in the embodiment, for example, ANDGATE.

One of the AND gate input units of the logic circuit unit 60 is connected to the RF antenna unit 20 and the other is connected to the switching unit so that the memory unit 10 and the RF antenna unit 20 To open and close the electrical connection of the battery.

Of course, when the input signal value of the AND gate input unit is set to 1 or 0 according to the opening and closing of the switching unit, if the value is 1, the memory unit 10 and the RF antenna unit 20 are electrically connected. It is needless to say that the electrical connection between the RF antenna unit 10 and the RF antenna unit 20 is not performed.

The RFID card 100 according to the embodiment of the present invention can be divided into an active RFID card 100 and a passive RFID card 100, The RFID card 100 may be divided into two groups according to whether the power is supplied by the power supply unit provided in the card 100 or the power supply unit is charged from the outside through the RF antenna unit 20, do.

Therefore, it is possible to open and close the electrical connection in the RFID card by interposing the switching means described above on the circuit connection end between the power supply unit and the other components, thereby controlling the operation of the RFID card.

 It is to be understood that the invention is not limited to the specific embodiments thereof, but may be variously modified and modified without departing from the gist of the invention. It should be borne in mind that such variations or modifications fall within the scope of the present invention as long as they utilize the features of the present invention.

As described above, according to the present invention, switching means is interposed between the memory unit and the central processing unit, or between the RF antenna unit and the central processing unit so that the electrical connection can be selectively controlled, It is possible to prevent malfunction such as information leakage or double payment.

Claims (7)

A memory unit 10 for storing data; And an RF antenna unit 20 for transmitting / receiving a radio signal with the outside, A switching means is interposed between the memory unit 10 and the RF antenna unit 20 electrically connected to the memory unit 10 so that connection is selectively controlled. The switching means includes an optical sensor 45 for controlling the flow of current according to the amount of light to be received, a light adjusting means 45 for controlling the sealing and exposure of the optical sensor 45 to adjust the amount of light received by the optical sensor 45, Wherein the RFID tag has a switching means. A memory unit 10 for storing data; An RF antenna unit 20 for transmitting / receiving a radio signal with the outside; And And a central processing unit (30) for receiving data from the memory unit (10) and the RF antenna unit (20) to perform calculation and determination and to control the memory unit (10) and the RF antenna unit But, A switching means is provided between the central processing unit 30 electrically connected to the memory unit 10 or between the central processing unit 30 electrically connected to the RF antenna unit 20 Respectively, The switching means includes an optical sensor 45 for controlling the flow of current according to the amount of light to be received, a light adjusting means 45 for controlling the sealing and exposure of the optical sensor 45 to adjust the amount of light received by the optical sensor 45, Wherein the RFID tag has a switching means. A memory unit 10 for storing data; An RF antenna unit 20 for transmitting / receiving a radio signal with the outside; And And a logic circuit unit (60) interposed between the memory unit (10) and the RF antenna unit (20) A switching unit connected to the logic circuit unit 60 for selectively opening and closing the electrical connection between the memory unit 10 and the RF antenna unit 20, The switching means includes an optical sensor 45 for controlling the flow of current according to the amount of light to be received, a light adjusting means 45 for controlling the sealing and exposure of the optical sensor 45 to adjust the amount of light received by the optical sensor 45, Wherein the RFID tag has a switching means. 4. The method according to any one of claims 1 to 3, Wherein the light control means is a touching / releasing sticker (46) which is attached to an upper side of an optical sensor exposed to an outside of the RFID card and seals or detaches and exposes the same. delete delete delete

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