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:
Jul. 29, 2014
Filed:
Mar. 29, 2012
Shinichi Shiotsu, Kawasaki, JP;
Satoshi Inano, Kawasaki, JP;
Hideki Tanaka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A wireless tag device can communicate with an inquiry device includes: a local terminal storage unit storing local terminal identification information which can be discriminated from another wireless tag device; a reception detection unit detecting a signal transmitted from the inquiry device or another wireless tag device; an inquiry signal receiving unit receiving the detected inquiry signal if the inquiry signal is transmitted using a first frequency from the inquiry device; a reply signal transmitting unit transmitting a reply signal in response to the inquiry signal using a second frequency different from the first frequency; and a report signal transmitting unit transmitting a report signal including the local terminal identification information stored in the local terminal storage unit using a third frequency different from the second frequency if the inquiry signal transmitted from the inquiry device cannot be detected continuously in a specified time period in the reception detection unit.