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Relaying apparatus and communication system

A relay device and wireless communication technology, applied in the RFID field, can solve the problems of inconvenient installation or disassembly of the antenna coil 210, damage to the reader/writer, inconvenient maintenance, etc.

Inactive Publication Date: 2006-12-20
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] As a result, it is inconvenient to install or disassemble the antenna coil 210, especially the maintenance is more inconvenient, so that the lead wire 211 will be broken or the reader / writer will be damaged in the worst case.

Method used

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  • Relaying apparatus and communication system
  • Relaying apparatus and communication system
  • Relaying apparatus and communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0115] The results of an experiment for measuring the effect of the matched tuning circuit 30 are shown by way of an example.

[0116] In the experiment, in the wireless communication between the reader / writer 10 and the non-contact IC card 20, the area for allowing communication when the matching tuning circuit 30 was used and the area for allowing communication when the matching tuning circuit 30 was not used were performed. Measured and compared with each other.

[0117] Such as image 3 with 6 As shown in , in the same experiment, an iron plate with a small hole having the same shape as the antenna coil 11 of the reader / writer 10 was placed between the reader / writer 10 and the non-contact IC card 20 in order to verify the The effect of the matching tuning circuit 30 under the actual use conditions of the matching tuning circuit 30 .

[0118] (Experiment 1)

[0119] In Experiment 1, the communication-allowed area was measured in two cases, a case where the reader / writer...

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PUM

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Abstract

A relaying device for providing optimum communication between a non-contact information medium and an information read / write device, and a communication system employing the relaying device, in which the adverse effect on communication, brought about by limitations on the mounting site of the information read / write device may be eliminated. The relaying device is formed by a resonance circuit 34 including a first antenna coil 31, electro-magnetically coupled to an antenna coil 11 of the information read / write device 10, a second antenna coil 32, connected in series with the first antenna coil 31 and electro-magnetically coupled to an antenna coil 21 of the non-contact information medium 20, and a tuning capacitor 33 connected in series with the first antenna coil 31 and the second antenna coil 32. The first antenna coil 31, second antenna coil 32 and the tuning capacitor 33 making up the resonance circuit 34 is resonated with the same resonance frequency as that of the resonance circuit 13 of the information read / write device 10 and that of the resonance circuit 23 of the non-contact information medium 20.

Description

technical field [0001] The present invention relates to an RFID (Radio Frequency Identification) using a non-contact information medium such as a non-contact IC (Integrated Circuit) card or a non-contact IC card. More specifically, it relates to a relay device for providing optimum communication between a non-contact information medium and an information reader / writer, and to a communication system employing the relay device. Background technique [0002] As a communication system using a non-contact information medium such as a non-contact IC card or a non-contact IC card, an RFID system has been designed and put into practical use. The RFID system allows information communication between an IC chip contained in a non-contact information medium and a reader / writer, and is used as an automatic ticket checking machine in a railway station or for lending books in a lending library. It is estimated that in the near future, the system will be widely used to exchange private inf...

Claims

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Application Information

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IPC IPC(8): H04B7/14G06K19/07G06K17/00G06K7/00H04B5/02
CPCG06K19/0726G06K7/0008G06K7/10178G06K19/0723H04B7/14
Inventor 菊地章浩泽田淳一石垣正人
Owner SONY CORP