JP2001005921A - Non-contact type data carrier system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the maintainability and visibility of a responder by providing the responder with a response display means so as to be able to confirm the initial communication performance of the responder without an external controlling device in a non-contact type data carrier system consisting of the responder having a function for receiving power and a data signal transmitted from an interrogator to return a data signal to the interrogator. SOLUTION: A personal computer is used for a host controller, an R/W is used for an interrogator, an IC card is used for a responder and a display lighting circuit is provided at the IC card. The display lighting circuit consists of a coil 41, an IC 42, a low-voltage diode 43 and a light-emitting diode 44. When the request command is transmitted to the interrogator from the host controller, the interrogator sends a request signal to the responder. A response is returned to the interrogator when the IC 42 is operated by the approach of the responder to the antenna of the interrogator. At the same time as this, a constant voltage diode 43 and a light emitting diode 44 connected in parallel with the coil 41, are operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a contactless data carrier system.

[0002]

2. Description of the Related Art In recent years, with the development of semiconductor technology and electronic communication technology, R which exchanges data bidirectionally without contact
F-ID system (radio-frequency identification
contactless ID system, etc.
It is attracting attention as a new automatic solid recognition system, and its products and stress systems are being developed and put into practical use. This non-contact ID system is composed of an interrogator (reader writer) and a transponder (transponder). The transponder receives a signal emitted from the interrogator antenna, and the transponder sends a signal to the interrogator. A return signal is returned. Thus, the interrogator writes information to the transponder or reads information from the transponder to the syllabary.

[0003] As an application example of this RF-ID system, there has been an increasing trend in recent years that an IC card equipped with an IC is used in a transponder as a trend.
From the viewpoint of security, IC cards are attracting attention as a substitute for magnetic cards used in current credit cards and prepaid cards.

The configuration of a conventional interrogator (reader / writer) includes a transmission device having a data modulation and power amplification function, a reception device having a data demodulation function, and a control device for performing data communication with a host control device. The transponder includes a power supply circuit unit for generating power, a memory unit for storing data, an encryption processing unit for encrypting data, a data modulation / demodulation circuit unit, and a data control circuit unit.

[0005]

As a result of the data transmission from the interrogator to the transponder from the host controller, the transponder interprets the transmission data and returns a return signal to the interrogator. The data processed by the interrogator is taken into the host controller, and the host device displays the response result of the transponder or sounds a buzzer.
Therefore, the host controller can confirm the data processing result in the transponder, but the transponder itself has no means for confirming.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a non-contact data carrier system having a transponder excellent in maintainability and visibility of the transponder.

[0007]

A non-contact data carrier system according to the present invention receives power and a data signal transmitted from an interrogator having a function of transmitting and receiving power and a data signal, In a non-contact data carrier system including a transponder having a function of returning a data signal to a transponder, a response display unit is provided in the transponder.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS When a request command is transmitted from an upper-level control device to an interrogator, the interrogator interprets the request command, and a request signal is sent from the interrogator to the transponder. The transponder receives this, and at the same time the internal IC operates, the display means functions by the energy supplied from the interrogator. Therefore, the display unit on the surface of the transponder is turned on by the means described above, and the initial response of the communication can be confirmed only by the transponder.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a personal computer is used for the host controller 1, an R / W is used for the interrogator 2, an IC card is used for the transponder 3, and a display lighting circuit 4 is provided on the IC card. Provided. As shown in FIG. 2, the display lighting circuit includes a coil 41 formed by a stamp iron circuit, an IC 42, a constant voltage diode 43, and a light emitting diode 44. As the operation, when a request command is transmitted from the higher-level control device 1 to the interrogator 2, the interrogator 2 sends a request signal to the responder 3. When the transponder 3 approaches the antenna of the interrogator 2, energy is supplied to the transponder 3. When the IC 42 inside the transponder 3 operates, the response of the request signal is returned from the transponder 3 to the interrogator 2. At the same time, the constant voltage diode 43 and the light emitting diode 44 connected in parallel to the coil 41 operate.

[0010]

According to the present invention, since the response result can be confirmed by the transponder, the initial communication performance of the transponder can be confirmed without an external control device. Further, by providing the transponder with display means, the maintainability and visibility of the transponder are improved, which is very useful in practice.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a circuit diagram showing a main part of one embodiment of the present invention.

[Explanation of symbols]

1. Upper control device 2. Interrogator 3. Transponder 4. Display lighting circuit 41. Coil 42. IC 43. Constant voltage diode 44. Light emitting diode

Claims (2)

[Claims] An interrogator having a function of transmitting and receiving power and a data signal, comprising a transponder having a function of receiving the power and data signal transmitted from the interrogator and returning a data signal to the interrogator. Non-contact data carrier system, wherein a response display means is provided in the transponder. 2. The non-contact data carrier system according to claim 1, wherein a response notifying means is provided in conjunction with said response displaying means.