Noncontact recording medium reader/writer

Details Noncontact recording medium reader/writer Noncontact recording medium reader/writer

2004-06-29

2008-11-25

Urban, Edward (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S551000, C455S575700, C343S908000, C235S493000

Reexamination Certificate

active

07457637

ABSTRACT:
The object of the invention is to provide a noncontact IC card reader/writer integrated with an antenna that does not require the limitation of an installation location and the adjustment of a resonance frequency of the antenna, is convenient in installation, is provided with a stable characteristic, is small-sized and low-priced. To achieve the object, the invention is provided with a loop antenna that supplies electric power and send data to a noncontact IC card by electromagnetic induction and acquires receive data from the noncontact IC card by load fluctuation, a magnetic body arranged closely at the back of the loop antenna, a first metallic plate arranged on the back side of the magnetic body and a second metallic plate arranged on the back side of the first metallic plate and larger than the first metallic plate in size.

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European Search Report dated Jun. 1, 2006.
English translation of Japanese Office Action of Jun. 19, 2007.
English translation of JP 8263610.
English translation of JP 11238103.
Japanese Office Action of Jun. 19, 2007.
Japanese Office Action dated Jan. 18, 2008 with English Translation thereof.

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