The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2015
Filed:
Mar. 14, 2011
Applicants:
Kiyoshi Kato, Kanagawa, JP;
Asami Tadokoro, Tokyo, JP;
Inventors:
Kiyoshi Kato, Kanagawa, JP;
Asami Tadokoro, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/00 (2006.01); G06K 19/07 (2006.01); H01Q 1/22 (2006.01);
U.S. Cl.
CPC ...
G06K 19/0723 (2013.01); G06K 19/0701 (2013.01); G06K 19/0715 (2013.01); H01Q 1/2208 (2013.01); H01Q 1/2283 (2013.01);
Abstract
Of a wireless communication system, an RF tag which can operate normally even when a communication distance is extremely short, like the case where the RF tag is in contact with a reader/writer, whereby the reliability is improved. The RF tag which communicates data by wireless communication includes a comparison circuit which compares electric power supplied from outside with reference electric power and a protection circuit portion which is operated when the electric power supplied from outside is higher than the reference electric power in the comparison circuit.