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. 01, 2011
Filed:
May. 31, 2006
Applicants:
Tomoyuki Mochizuki, Yokohama, JP;
Hideki Sano, Yokohama, JP;
Inventors:
Tomoyuki Mochizuki, Yokohama, JP;
Hideki Sano, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04Q 5/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A technique of preventing occurrence of interference even when a plurality of RFID antennas are used simultaneously. Each RFID antenna is attached with a calibration RFID tag. A combination of RFID antennas that causes a problem is acquired based on whether information held by the calibration RFID tag can be read from each of the RFID antennas that have performed reading simultaneously. Then, an RFID antenna use procedure is generated such that the RFID antennas in the acquired combination are not used simultaneously. Each RFID antenna is operated according to the generated use procedure.