Patent Number: 8,791,796

Title: Wireless tag device, storage medium storing control program for wireless tag device, and control method for wireless tag device

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.

Inventors: Shiotsu; Shinichi (Kawasaki, JP), Inano; Satoshi (Kawasaki, JP), Tanaka; Hideki (Kawasaki, JP)

Assignee: Fujitsu Limited

International Classification: H04Q 5/22 (20060101)

Expiration Date: 7/29/12018