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. 24, 2015
Filed:
Jan. 14, 2011
Applicants:
Dieter Horst, Cadolzburg, DE;
Dan Yu, Beijing, CN;
Yong Yuan, Beijing, CN;
Inventors:
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q 5/22 (2006.01); G06K 7/00 (2006.01); G06K 7/10 (2006.01); G01S 13/84 (2006.01); G01S 13/75 (2006.01);
U.S. Cl.
CPC ...
G06K 7/0008 (2013.01); G01S 13/84 (2013.01); G06K 7/10009 (2013.01); G01S 13/75 (2013.01);
Abstract
A radio frequency identifying reader (RFID) and a method for locating a tag by the RFID includes transmitting, by the RFID reader, signals to the tag on at least two frequencies and receiving a corresponding reflection signal, combining, by the RFID reader, received reflection signals and acquiring the combined signal which is received, and mapping the combined signal that is received to a constellation point in a constellation map to locate the tag such that the tag can be more easily located.