CN101430773B - Cards with RFID tags - Google Patents

Abstract

The invention is a card with radio frequency identification label, which is used to receive the first electric wave signal with the first information sent by the radio frequency identification reader, and after responding to the first electric wave signal, the second electric wave signal with the second information is returned to the radio frequency identification reader, the card includes: coil, microprocessor chip, switch and display. The micro-processing chip is arranged in the card and electrically connected with the coil; the switch is arranged between the coil and the micro-processing chip; the display is controlled by the microprocessor chip to display the first information or the second information. The invention controls the wireless radio frequency identification label to be started or not by the switch, and the display displays the transmitted or received information, thereby achieving the purposes of preventing data from being stolen and effectively controlling the information to and from the label.

Description

Cards with RFID tags

technical field

The invention relates to a card with a radio frequency identification tag, especially a card capable of displaying information and having a hardware switch to control the function of the radio frequency identification tag.

Background technique

Radio Frequency Identification (RFID) is a chip with built-in radio technology. The chip can also record a series of information, such as product category, location, date, etc. The biggest advantage is that it can improve the efficiency of item management. Most of the information is recorded on the barcode, and then the barcode is scanned by a scanner to obtain the information, while RFID only needs to be sensed within a certain range, and can read a large amount of information at one time. RFID technology can be applied to access control, joint tickets, transportation, etc.

The composition of the RFID system mainly includes a tag (Tag), a reader (Reader), and a computer host. The tag is a data storage component, and the reader is a tool to read data from the tag or store the data in the tag. The reader transmits the read data to the computer system and uses different applications to interpret the data. To assist users to reach quick and correct decisions. Tags can be divided into two types: active (Active) and passive (Passive). Active tags contain batteries, which can transmit information to readers at any time, have a long communication distance, and can store a large memory, but the price Higher; passive tag power comes from the radio wave sent by the reader to induce micro-current to the tag to supply its power supply, and then use the radio wave to transmit its information back to the reader, so the communication distance is short. The advantage of passive tags is that no additional batteries are needed, and they can achieve the advantages of small size, low price, long life and digital data portability. The antenna of the passive tag is built-in to sense and generate radio waves to send and receive data.

Because the current cards with RFID tag function rely on the alternating magnetic field generated by the reader to activate the RFID tag function in the card, there is no special design on the card to enable the RFID tag function in the card to activate or not. , so at present, for products such as electronic wallets or access control with RFID tag functions, as long as anyone has a card reading system that conforms to the RFID tag, the data and information in the card can be read within the communication distance, so there will be security. doubt. At present, when using RFID for data transmission, there is no information on the card with the RFID tag function that can display the data exchange in the card, so that the holder cannot know and control the received and transmitted information from the RFID tag card held. For example, the e-wallet with RFID tag function cannot know the amount deducted from the current transaction and the balance in the card during the transaction, and the user cannot effectively control the information in the e-wallet.

Contents of the invention

In view of the above problems, the present invention provides a card with a radio frequency identification (Radio Frequency Identification, RFID) tag to prevent others from reading the data in the tag with a suitable RFID reader, and to make the electronic device The owner of the RFID tag knows the information received from the RFID reader or the information transmitted by the RFID to the RFID reader.

A card with a radio frequency identification tag of the present invention is used to receive the first radio signal with the first information sent by the radio frequency identification reader, and after responding to the first radio signal, return the card with the second The second electric wave signal of the information is sent to the radio frequency identification reader, and the card includes: a coil, a micro-processing chip and a switch. The coil is arranged in the card, and the coil is used for inducing the first electric wave signal to form a first signal current with first information. The micro-processing chip is arranged in the card and is electrically connected to the coil. The micro-processing chip is used to analyze the first signal current transmitted by the coil, so as to generate a second signal current with second information to the coil, and the coil is based on the second signal. The current is used to form a second radio wave signal and return the second radio wave signal to the radio frequency identification reader. The switch is arranged between the coil and the micro-processing chip, and the switch is used for controlling the electrical connection between the coil and the micro-processing chip.

Another card with a radio frequency identification tag of the present invention is used to receive the first radio wave signal with the first information sent by the radio frequency identification reader, and after responding to the first radio wave signal, return the card with the first information The second radio wave signal of the second information is sent to the radio frequency identification reader, and the card includes: a coil, a micro-processing chip and electronic paper. The coil is arranged in the card, and the coil is used for receiving the first electric wave signal to form a first signal current with first information. The micro-processing chip is arranged in the card and is electrically connected to the coil. The micro-processing chip is used to analyze the first signal current transmitted by the coil, so as to generate a second signal current with second information to the coil, and the second signal is transmitted by the coil. The current resonance forms the second radio wave signal and returns the second radio wave signal to the radio frequency identification reader. The electronic paper is arranged on the card, and the electronic paper is electrically connected to the micro-processing chip, and the electronic paper is controlled by the micro-processing chip to display the first information or the second information.

The invention uses a switch to control whether the radio frequency identification tag is activated or not, and displays the transmitted or received information on the display, so as to prevent data theft and effectively control the transmitted information.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1 is a schematic diagram of a first embodiment of a card with a radio frequency identification tag of the present invention;

2 is a schematic diagram of a second embodiment of a card with a radio frequency identification tag of the present invention;

FIG. 3 is a schematic diagram of a third embodiment of a card with a radio frequency identification tag of the present invention.

Among them, reference signs

21 coils

22 microprocessor chips

23 switches

24 first capacitor

25 diodes

26 second capacitor

27 monitors

31 coils

32 microprocessor chips

33 electronic paper

34 first capacitor

35 diodes

36 second capacitor

100 cards

200 RFID Readers

300 cards

Detailed ways

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a first embodiment of a card with a radio frequency identification tag of the present invention. The card 100 with the radio frequency identification tag in this embodiment is used to receive the first radio wave signal with the first information sent by the radio frequency identification reader 200, and after responding to the first radio wave signal, return the radio signal with the second The second radio wave signal of the information is sent to the RFID reader 200 . The card 100 includes: a coil 21 , a micro-processing chip 22 and a switch 23 . The coil 21 is disposed in the card 100 for inducing a first radio signal to form a first signal current with first information. The micro-processing chip 22 is arranged in the card 100 and is electrically connected to the coil 21. The micro-processing chip 22 is used to analyze the first signal current transmitted by the coil 21, so as to generate a second signal current with second information to the coil 21, and The coil 21 forms a second radio signal according to the second signal current and returns the second radio signal to the RFID reader 200 . The switch 23 is disposed between the coil 21 and the microprocessing chip 22 , and the switch 23 is used to control the electrical connection between the coil 21 and the microprocessing chip 22 .

The switch 23 can be a switch or a return button. When the switch 23 is a switch, after the switch is switched, the switch connects the coil 21 and the micro-processing chip 22 electrically, and after the switch is switched again, the switch disconnects the coil 21 and the micro-processing chip. Electrical connection between chips 22 . When the switch 23 is a reverting button, the reverting button is used to electrically connect the coil 21 with the micro-processing chip 22 when the reverting button is continuously pressed, and it is disconnected when the reverting button is not pressed. Open the electrical connection between the coil 21 and the micro-processing chip 22 .

After the card 100 with the radio frequency identification tag of the present invention approaches the radio frequency identification reader 200, the coil 21 in the card 100 senses the alternating magnetic field emitted by the radio frequency identification reader 200, and the coil 21 is electrically The magnetic induction effect generates an alternating current on the coil 21, and the energy carried by the alternating current will first be stored by the first capacitor 24, and then released by the first capacitor 24 to form an alternating current, and the alternating current After being rectified and filtered by the rectifying and filtering circuit composed of the diode 25 and the second capacitor 26 , a direct current is formed to drive the micro-processing chip 22 . Another function of the coil 21 is to induce the first radio signal with the first information transmitted by the RFID reader 200 to form a first signal current with the first information, and transmit the first signal current to the microprocessor Chip 22, the micro-processing chip 22 responds to the coil 21 with the second signal current having the second information according to the memory data set in the micro-processing chip 22, and the coil 21 forms the second electric wave signal according to the second signal current and returns The second radio wave signal is transmitted to the RFID reader 200 .

A switch 23 is arranged between the coil 21 and the micro-processing chip 22, and the radio frequency identification tag is controlled by the switch 23 to activate or not. When the function of the radio frequency identification tag of the card needs to be used, the switch 23 is pressed to start the function of the radio frequency identification tag, and the first radio wave signal is received and the second radio wave signal is returned. When the function of the radio frequency identification tag of the card is activated, the switch 23 is pressed again to close the function of the radio frequency identification tag, so as to prevent other people from reading the data stored in the card with a suitable radio frequency identification reader.

In this embodiment, the switch 23 is used to control whether the radio frequency identification tag is activated or not, so as to achieve the function of data theft prevention.

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of a second embodiment of a card with a radio frequency identification tag of the present invention. The card 300 with the radio frequency identification tag in this embodiment is used to receive the first radio wave signal with the first information sent by the radio frequency identification reader 200, and after responding to the first radio wave signal, return the radio signal with the second The second radio wave signal of information is sent to the RFID reader 200 . The card 300 includes: a coil 31 , a micro-processing chip 32 and an electronic paper 33 . The coil 31 is disposed in the card 300, and the coil 31 is used for inducing a first radio signal to form a first signal current with first information. The micro-processing chip 32 is arranged in the card 300 and is electrically connected to the coil 31. The micro-processing chip 32 is used to analyze the first signal current transmitted by the coil 31, so as to generate a second signal current with second information to the coil 31, The coil 31 forms a second radio wave signal according to the second signal current and returns the second radio wave signal to the RFID reader 200 . The electronic paper 33 is disposed on the card 300, and the electronic paper 33 is electrically connected to the microprocessing chip 32, and the electronic paper 33 is controlled by the microprocessing chip 32 to display the first information or the second information.

The electronic paper 33 is formed by coating an electronic ink on a conductive substrate. Electronic ink is filled with blue liquid and white particles in transparent microcapsules. When an external voltage is applied to the electronic ink, the white particles in the capsule will move. When the microprocessing chip 32 receives the first signal current with the first information and responds to the second signal current with the second information, it will apply different voltages to each pixel (pixel) on the electronic paper at the same time, so that the data on the electronic paper to display the picture of the first information or the second information composed of white and blue. The electronic ink can be made of liquids and particles of other colors, so as to form pictures of different colors.

After the card 300 with a radio frequency identification tag of the present invention approaches the radio frequency identification reader 200, the coil 31 in the card 300 senses the alternating magnetic field emitted by the radio frequency identification reader 200, and the coil 31 is electrically The magnetic induction effect generates an alternating current on the coil 31, and the energy carried by the alternating current will first be stored by the first capacitor 34, and then released by the first capacitor 34 to form an alternating current, and the alternating current After being rectified and filtered by the rectifying and filtering circuit composed of the diode 35 and the second capacitor 36 , a direct current is formed to drive the micro-processing chip 32 . Another function of the coil 31 is to induce the first radio signal with the first information transmitted by the RFID reader 200 to form a first signal current with the first information, and transmit the first signal current to the microprocessor Chip 32, the micro-processing chip 32 responds to the coil 31 with the second signal current with the second information according to the memory data set in the micro-processing chip 32, and the coil 31 forms the second electric wave signal according to the second signal current and returns The second radio wave signal is transmitted to the RFID reader 200 . Wherein the electronic paper 33 on the card 300 is controlled by the microprocessing chip 32, when the microprocessing chip 32 analyzes the first signal current with the first information, the electronic paper 33 is controlled to display the first information, when the microprocessing chip 32 In response to the second signal current having the second information, the electronic paper 33 is controlled to display the second information.

In this embodiment, the electronic paper 33 is used to display the transmitted or received information, so as to effectively control the transmitted information.

Please refer to FIG. 3 . FIG. 3 is a schematic diagram of a third embodiment of a card with a radio frequency identification tag of the present invention. The device structure of the card 100 with a radio frequency identification tag of this embodiment is substantially the same as that of the first embodiment of the present invention, the difference is that the card 100 with a radio frequency identification tag of this embodiment further includes a display 27 . The display 27 is disposed on the card 100, and the display 27 is electrically connected to the microprocessing chip 22. The display 27 is controlled by the microprocessing chip 22 to display the first information or the second information.

The display 27 may be a liquid crystal display or electronic paper.

After the card 100 with the radio frequency identification tag of the present invention approaches the radio frequency identification reader 200, the coil 21 in the card 100 senses the alternating magnetic field emitted by the radio frequency identification reader 200, and the coil 21 is electrically The magnetic induction effect generates an alternating current on the coil 21, and the energy carried by the alternating current will first be stored by the first capacitor 24, and then released by the first capacitor 24 to form an alternating current, and the alternating current After being rectified and filtered by the rectifying and filtering circuit composed of the diode 25 and the second capacitor 26 , a direct current is formed to drive the micro-processing chip 22 . Another function of the coil 21 is to induce the first radio signal with the first information transmitted by the RFID reader 200 to form a first signal current with the first information, and transmit the first signal current to the microprocessor Chip 22, the micro-processing chip 22 responds to the coil 21 with the second signal current having the second information according to the memory data set in the micro-processing chip 22, and the coil 21 forms the second electric wave signal according to the second signal current and returns The second radio wave signal is transmitted to the RFID reader 200 . A switch 23 is provided between the coil 21 and the micro-processing chip 22, and the switch 23 controls whether the radio frequency identification tag is activated or not. When the function of the radio frequency identification tag of the card needs to be used, the switch 23 is pressed to start the function of the radio frequency identification tag, and the first radio wave signal is received and the second radio wave signal is returned. When the function of the radio frequency identification tag of the card is activated, the switch 23 is pressed again to close the function of the radio frequency identification tag, so as to prevent other people from reading the data stored in the card with a suitable radio frequency identification reader. Wherein the display 27 on the card 100 is controlled by the microprocessing chip 22. When the microprocessing chip 22 analyzes the first signal current with the first information, the display 27 is controlled to display the first information. When the microprocessing chip 22 returns When there is a second signal current of the second information, the control display 27 displays the second information.

In this embodiment, the switch 23 is used to control whether the radio frequency identification tag is activated or not, and the display 27 displays the transmitted or received information, so as to prevent data theft and effectively control the transmitted information.

Of course, the present invention can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. card with radio RF identification label, in order to receive one first electric wave signal that a radio frequency identification reader is sent with a first information, and behind this first electric wave signal of response, passback has one second electric wave signal of one second information and gives this radio frequency identification reader, it is characterized in that this card with radio RF identification label includes:

One coil is arranged in this card, and this coil has one first marking current of this first information in order to receive this first electric wave signal with formation;

One little process chip, be arranged in this card and electrically connect this coil, this little process chip is in order to resolve this first marking current that this coil transmits, produce a secondary signal electric current according to this and give this coil, give this radio frequency identification reader according to this secondary signal electric current to form this second electric wave signal and to return this second electric wave signal by this coil with this second information;

One switch is arranged between this coil and this little process chip, and this switch is in order to control the electric connection between this coil and this little process chip.

2. card as claimed in claim 1 is characterized in that, wherein this switch is a return type button.

3. card as claimed in claim 1 is characterized in that, wherein this switch is a button.

4. card as claimed in claim 1, it is characterized in that wherein include a display, this display is arranged at this card, and this display electrically connects this little process chip, and this display is controlled to show this first information or this second information by this little process chip.

5. card as claimed in claim 4 is characterized in that, wherein this switch is a return type button.

6. card as claimed in claim 4 is characterized in that, wherein this switch is a button.

7. card as claimed in claim 4 is characterized in that, wherein this display is an Electronic Paper.

8. card as claimed in claim 7 is characterized in that, wherein this switch is a return type button.

9. card as claimed in claim 7 is characterized in that, wherein this switch is a button.

10. card with radio RF identification label, in order to receive one first electric wave signal that a radio frequency identification reader is sent with a first information, and behind this first electric wave signal of response, passback has one second electric wave signal of one second information and gives this radio frequency identification reader, it is characterized in that this card with radio RF identification label includes:

One coil is arranged in this card, and this coil has one first marking current of this first information in order to receive this first electric wave signal with formation;

One little process chip, be arranged in this card and electrically connect this coil, this little process chip is in order to resolve this first marking current that this coil transmits, produce a secondary signal electric current according to this and give this coil, give this radio frequency identification reader according to this secondary signal electric current to form this second electric wave signal and to return this second electric wave signal by this coil with this second information;

One Electronic Paper is arranged at this card, and this this little process chip of Electronic Paper electric connection, and this Electronic Paper is controlled to show this first information or this second information by this little process chip.

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