Non-contact electronic device

Details Non-contact electronic device Non-contact electronic device

2011-08-09

2011-08-09

Bugg, George A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S010100, C340S010200, C340S010300, C340S010400, C340S010500, C340S010600, C340S572100, C340S572200, C340S572300, C340S572400, C340S572500, C340S572600, C340S572800, C340S572900, C455S013300, C455S041100, C455S041200, C455S066100

Reexamination Certificate

active

07994923

ABSTRACT:
A contactless electronic device comprises a semiconductor integrated circuit device, a plurality of antennas (or antenna coils) for receiving high-frequency signals supplied by radio waves or electromagnetic waves having different frequencies. An interface judgment circuit judges which antenna the high-frequency signals are inputted through, and according to a result of the judgment, the operation of the semiconductor integrated circuit device is changed. In this manner, the contactless electronic device becomes possible to respond to a plurality of communication protocols using high-frequency signals having different frequencies, while contactless electronic devices have been impossible to respond to communication protocols using various high-frequency signals.

REFERENCES:
patent: 2003/0104848 (2003-06-01), Brideglall
patent: 2005/0186904 (2005-08-01), Kowalski et al.
patent: 2005/0212674 (2005-09-01), Desmons et al.
patent: 2007/0229277 (2007-10-01), Usami
patent: 2008/0068132 (2008-03-01), Kayanakis et al.
patent: 2005-173790 (2005-06-01), None
patent: 2007-0056312 (2007-04-01), None
patent: WO 2006/011000 (2006-10-01), None
“Information technology—Radio frequency identification for item management”, ISO/IEC 18000-6, 2006.
“Identification cards—Contactless integrated circuit(s) cards—Vicinity cards”, ISO/IEC 15693, 2000.

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