非接触リーダライタ - Panasonic Corporation

Title:

非接触リーダライタ

Document Type and Number:

Japanese Patent JP4466426

Kind Code:

B2

Abstract:

To provide a non-contact reader/writer that is hardly affected by a reflection wave from a fluorescent lamp.

The non-contact reader/writer includes: a reception antenna 1; an optical sensor 8; and a coefficient feedback circuit 9 acting like an elimination means for eliminating a signal resulting from multiplying a prescribed coefficient with an electromagnetic wave sensed by the optical sensor 8 from an electromagnetic wave signal received by the reception antenna 1, and uses the coefficient to automatically determine by using the feedback circuit and eliminates a noise signal included in a reflection wave from the fluorescent lamp. Since the non-contact reader/writer includes the optical sensor for receiving the noise signal from the fluorescent lamp and the elimination means for processing information from the optical sensor, and the non-contact reader/writer can to advantage eliminate the signal modulated by emission light of the fluorescent lamp, that is, the noise signal, resulting from a radio wave output from the reader/writer made incident onto the fluorescent lamp.

Inventors:

Takeshi Goto

Application Number:

JP2005090912A

Publication Date:

May 26, 2010

Filing Date:

March 28, 2005

Export Citation:

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