JPH05314077A - Id card - Google Patents

Abstract

PURPOSE:To perform message transmission or the like while preventing unwanted data from being exchanged between an interrogator and the ID card. CONSTITUTION:At an ID card 13 to exchange data while being non-contact with an interrogator 1 through microwaves transmitted from the interrogator 1 by providing memory elements, a data processing part 23 is provided to receive a call signal from a caller 27 and to collate the call signal with data in the memory elements, and a display part 25 is provided to display required data when the call signal and the data in the memory elements are coincident. Then, the data processing part 23 controls the transmission and stop of data stored in the ID card 13 while being interlocked with the call signal from the caller 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contactless ID card for transmitting and receiving data to and from the interrogator via a microwave transmitted from the interrogator.

[0002]

2. Description of the Related Art FIG. 3 is a system configuration diagram of a conventional non-contact type ID card and interrogator. The conventional system uses data (ID number, ID number,
Coded data such as action history) is exchanged. These interrogators 1 and contactless ID cards 2
In between, communication is performed using light such as infrared rays, microwaves, radio waves, electromagnetic induction, and electromagnetic coupling, radio waves, and magnetism.
Among them, the microwave has a longer communication distance than other methods, and can transmit and receive a large amount of information data in a short time. Further, there is no need to incorporate a microwave oscillator in the non-contact ID card, and therefore, there is an advantage that the power consumption is low and the battery life is long, and accordingly, there are advantages such as the automatic production process field, the security field, and the distribution field. , Its applications are expanding in various fields such as transportation and medical fields.

FIG. 4 is a block diagram of a conventional non-contact type ID card 3 using a microwave system, in which a microwave transmitted from an interrogator is received by a receiver 4 and the received microwave is modulated by a modulator 5. The data stored in the non-contact ID card 3 is read by performing modulation according to the signal from the data storage unit 6 and sending it back to the interrogator via the transmission unit 7. On the other hand, when writing data to the non-contact type ID card, microwaves modulated according to the data are sent from the interrogator to the non-contact type ID card, received by the receiving section 4 and demodulated, and then stored in the data storage section 5. The data of is being rewritten. FIG. 5 shows an application example of a contactless ID card using microwaves, which is an example of a telephone transfer system. This system uses the network 8 (LA) to determine the location of a user carrying a contactless ID card.
N, Ethernet, or RS-232C) is detected by the interrogator 1, and the private branch exchange 10 (PBX) connected via the controller 9 and its CPU 11 automatically transfer the telephone 12 Is becoming

[0004]

As described above, the non-contact type ID card exchanges built-in data automatically when it is presented in front of the interrogator or semi-automatically with an auxiliary device such as an infrared detector. This system is very convenient when the number of interrogators and the number of non-contact ID cards are small, but in the case of a large-scale network system as shown in FIG. 5, the number of interrogators is also large. Since the number of users who carry a non-contact ID card is very large, the control load on the controller 9 and the CPU 11 becomes large, and there is a problem that the function of the entire system is deteriorated or finally the function is stopped. .. Also, the communication distance between the interrogator and the non-contact type ID card is several meters even in the microwave method, which is the most advantageous in terms of distance.
In addition, there may be a case where communication (data transfer) cannot be reliably performed depending on the installation status of the interrogator and the carrying status of the non-contact ID card.

[0005]

In order to solve the above-mentioned problems, the present invention improves the conventional non-contact type ID card, further installs a calling device, and receives a calling signal from the calling device. Means for identifying and collating the calling signal, presence / absence of a call, means for displaying a message, and an interrogator and a non-contact type I by a calling signal.
A means for controlling data exchange (communication, suspension) with the D card is added according to the usage pattern of the user to exchange unnecessary data between the interrogator networked and the contactless ID card. In addition, the communication distance of the contactless ID card is significantly extended, the communication service area is expanded, and reliable data transmission / reception can be performed when communication is required. Moreover, by utilizing these functions, it is impossible with conventional devices. The non-contact type ID card capable of transmitting the message communication which was described above is obtained.

[0006]

According to the present invention, since the conventional non-contact type ID card is improved and a new call signal receiving section, a collating section, and a data transfer control section between the display section or the interrogator are added, the interrogator can be used as an interrogator. Prevents the transfer of unnecessary data between non-contact ID cards and allows the system to operate smoothly without imposing an excessive load on the controller that controls a large number of networked interrogators and non-contact ID cards. Also, since the communication distance from the calling device is extended, the communication service area of the contactless ID card is expanded, and the constraint that the user must always be in front of the interrogator can be eliminated, and when necessary. Data can be exchanged (communication) with certainty. Furthermore, by providing a display unit, it is possible to provide convenient functions for the user in use such as message transmission, individual selection call, group batch call, etc., which were not possible with conventional contactless ID cards.

[0007]

The non-contact ID card according to the present invention will be described in detail below. FIG. 1 is a block circuit diagram of a contactless ID card according to the present invention. In FIG. 1, 13
Is a contactless ID card according to the present invention, 14 is a microwave receiving antenna for receiving microwaves from an interrogator,
Reference numeral 15 denotes a microwave receiving unit including a receiving unit that receives and demodulates the modulated microwave in order to read data or rewrite data stored in the card.

The demodulator of the microwave receiving section can be constructed by adapting any demodulator such as an amplitude demodulator, a frequency demodulator, and a phase demodulator as long as it corresponds to the modulation system of the interrogator. Reference numeral 16 denotes a modulator that modulates the reading microwave in accordance with a digital signal of data contained in the non-contact ID card, and is composed of several varactor diodes. Reference numeral 17 is a microwave transmission unit for sending back the microwave modulated by the data contained in the card to the interrogator. The microwave transmitter 17 can be composed of several hybrid circuits and several varactor diodes by utilizing the transmission characteristics of microwaves and the distributed constant circuit, and the circuit is shared with the microwave receiver 15. Can be configured as Reference numeral 18 is a microwave transmitting antenna for transmitting microwaves back to the interrogator, and 19 is a data storage unit for storing the identification (ID) number of the carrier and other necessary user information.

A control unit 20 determines whether the microwave signal from the interrogator is a reading signal or a writing signal, and further controls the connection between the data storage unit 19 and the modulation unit 16 by a calling signal described later. is there. Whether it is a read microwave signal or a write microwave signal can be easily determined by determining whether the incoming microwave signal is modulated or not. It may be converted to a baseband level signal with a diode. Data storage unit 19 and modulation unit 1
A circuit for controlling the connection with 6 can be constructed by utilizing the switching characteristics of several transistors. Since this may have a switching function, any other element having a switching function such as a diode or a relay may be used. 21 is a high frequency receiving antenna for receiving radio waves from the calling device, 2
Reference numeral 2 is a high-frequency receiving unit, which is composed of a demodulator corresponding to the modulation method of the calling device, a filter having several stages, an amplifier, and the like.

Although these can be constructed by various circuit systems, a frequency modulation / demodulation system is preferable in consideration of propagation characteristics. Reference numeral 23 is a data processing unit (CPU) including a decoder, which is for performing collation with a call number built in a call number storage unit described later and controlling the display unit. In recent years, it can be composed of a ready-made IC chip. Reference numeral 24 is a call number storage unit that stores the call number of the non-contact type ID card 13, and may be shared with or co-located with the data storage unit 19. Reference numeral 25 is a display unit for displaying the presence or absence of a call and a message. As a display system, various displays such as a lamp display by an LED and a liquid crystal display by an LCD can be configured according to the application and are not particularly limited.

Next, the operation of the non-contact type ID card thus constructed will be described. A specific example will be described for ease of explanation. FIG. 2 shows an example of a telephone transfer system using a contactless ID card according to the present invention. In FIG. 2, when the telephone 12 is called and the listener is absent,
The private branch exchange 10 and the data processing / control unit (CPU) 11 identify the absence and detect the telephone subscriber's ID number. This ID number is wirelessly transmitted from the calling device 27 via the calling device controller 26. In the contactless ID card 13, the calling device 27
1 is received by the high frequency receiving antenna section 21 shown in FIG. 1, detected by the high frequency receiving section 22, and a signal including an ID number is sent to the data processing section 23. In the non-contact type ID card 13, the sent ID number is collated with the ID number stored in the calling number storage section 24, and if they match, the display section 25 shown in FIG. At the same time as displaying, the switch of the control unit 20 is operated to connect the modulation unit 16 and the data storage unit 19, and the interrogator 1 and the non-contact type ID card 13 wait for communication.

After confirming the display, when the user approaches the nearest telephone, the interrogator 1 provided with the telephone 12 issues a question signal to the non-contact type ID card 13 and the data storage unit 1
The digital signal corresponding to the ID number stored in the personal computer 9 is read, and the private branch exchange 1 is read through the interrogator controller 28.
0 and the information of the user's telephone position read to the CPU 11, and then the private branch exchange 10 and the CPU 1
1 judges this and transfers the call. When the call ends, a clearing signal is sent from the private branch exchange 10 through the caller controller 26 and the caller 27 to the contactless ID card 13, and the connection switch of the control unit 20 is released via the data processing unit 23. Data transfer between the device 1 and the non-contact type ID card 13 is prohibited.

The operation of the non-contact type ID card according to the present invention has been described above by using a specific example. However, if the application example is different, the application in which the connection between the data processing unit 23 and the control unit 20 is unnecessary is also possible. However, the present invention is not limited to the above-described embodiment, and various modifications can be made based on the spirit of the present invention. Therefore,
They are not excluded from the scope of the present invention.

[0014]

As described above in detail, according to the present invention, the basic structure of the conventional non-contact type ID card is improved by adding a control unit, and a caller is newly installed to call the caller. Since it is equipped with a receiving unit, a data processing unit, a display unit, etc. for controlling the contactless ID card by a calling signal from (1) unnecessary data between the interrogator and the contactless ID card. Can be exchanged. (2) When the network is configured, the load on the controller in the network can be reduced and a system with a margin can be constructed. (3) The communication distance for calling a contactless ID card can be significantly extended. (4) Data can be reliably exchanged when needed, and user convenience is significantly improved. (5) A message can be transmitted by the display.

The present invention has various advantages.

[Brief description of drawings]

FIG. 1 is a block circuit configuration diagram of a non-contact type ID card according to the present invention.

FIG. 2 is a schematic diagram of a telephone transfer system using a contactless ID card according to the present invention.

FIG. 3 is a system configuration diagram of a conventional non-contact ID card and interrogator.

FIG. 4 is a block diagram of a conventional non-contact type ID card using a microwave method.

FIG. 5 is a schematic diagram of an application example of a conventional microwave non-contact ID card.

[Explanation of symbols]

 1 Interrogator 2 Non-contact ID Card 3 Microwave Non-contact ID Card 4 Receiver 5 Modulator 6 Data Storage 7 Transmitter 8 Network 9 Controller 10 Private Branch Exchange 11 CPU 12 Telephone 13 Non-contact ID Card 14 Micro Antenna for wave reception 15 Microwave receiver 16 Modulator 17 Microwave transmitter 18 Antenna for microwave transmission 19 Data storage unit 20 Control unit 21 High frequency reception antenna 22 High frequency reception unit 23 Data processing unit 24 Call number storage Part 25 Display part 26 Caller controller 27 Caller 28 Interrogator controller

Claims (1)

[Claims] 1. An ID card having a storage element, which exchanges data with the interrogator via a microwave transmitted from the interrogator in a contactless manner, receives a call signal from the caller, and outputs the call signal. And a data processing unit that collates the data of the storage element with each other, and a display unit that displays necessary data when the calling signal and the data of the storage element match, and the data processing unit is provided from the calling device. An ID card characterized by controlling the sending and stopping of the data stored in the ID card in synchronization with the calling signal of.