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:
Aug. 11, 2009
Filed:
Jun. 20, 2005
Applicants:
Takehiro Kawai, Kyoto, JP;
Keisuke Saito, Kyoto, JP;
Shinichiro Okamura, Kyoto, JP;
Inventors:
Assignee:
Omron Corporation, Kyoto-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 13/74 (2006.01); G01S 13/08 (2006.01); G08B 13/14 (2006.01); H04M 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A direction estimating section estimates the incoming direction of a radio wave from an RFID tag in each of antennas. A position calculating section calculates the position of the RFID tag on the basis of the incoming direction of the radio wave estimated in the direction estimating section.