Non-contact IC card reading/writing apparatus

Details Non-contact IC card reading/writing apparatus Non-contact IC card reading/writing apparatus

2007-01-16

2007-01-16

Zimmerman, Brian (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S010100, C340S010520, C340S870030, C340S870030, C340S010340, C340S005100, C340S005200, C340S538160, C340S538140, C340S505000

Reexamination Certificate

active

10743899

ABSTRACT:
A non-contact IC card reading/writing apparatus having a superior reception characteristic includes a loop antenna, a resonant circuit unit, a wireless transmitting unit, and a wireless receiving unit. The resonant circuit unit, the wireless transmitting unit, and the wireless receiving unit are coupled to each other via any one of a directional coupler, a circulator, and an isolator.

REFERENCES:
patent: 5317330 (1994-05-01), Everett et al.
patent: 6097189 (2000-08-01), Arndt et al.
patent: 6194993 (2001-02-01), Hayashi et al.
patent: 6590498 (2003-07-01), Helms
patent: 2002/0044058 (2002-04-01), Heinrich et al.
patent: 2002007976 (2002-01-01), None

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