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:
Nov. 11, 2008
Filed:
Mar. 17, 2006
Wireless tag reader, wireless tag system, computer readable medium and wireless communication method
Yusuke Doi, Yokohama, JP;
Satoshi Ozaki, Kawasaki, JP;
Shirou Wakayama, Kawasaki, JP;
Masahiro Ishiyama, Kawasaki, JP;
Toshiyuki Umeda, Tokyo, JP;
Yusuke Doi, Yokohama, JP;
Satoshi Ozaki, Kawasaki, JP;
Shirou Wakayama, Kawasaki, JP;
Masahiro Ishiyama, Kawasaki, JP;
Toshiyuki Umeda, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
There is provided with a wireless tag reader communicating with a plurality of wireless tags each of which retains tag information piece and a bloom filter, the wireless tag reader comprising: a transmitter configured to transmit a read request signal simultaneously to the wireless tags to request the wireless tags to read out the bloom filters; a receiver configured to receive bloom filter signals simultaneously from the wireless tags to acquire a colliding bloom filter signal; a decoder configured to decode the colliding bloom filter signal to acquire a composite bloom filter which is equivalent to logic operation OR on the bloom filters; a data storage configured to store tag information pieces; and a filter verifier configured to verify each of tag information pieces in the data storage with the composite bloom filter to detect tag information pieces for which a verification result is positive or negative.