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:
Feb. 17, 2004
Filed:
Jul. 21, 2000
Applicant:
Inventors:
Mikio Kuwahara, Kokubunji, JP;
Ayumu Koide, Yokohama, JP;
Katsuhiko Tsunehara, Kokubunji, JP;
Nobukazu Doi, Hachioji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 7/20 ; G01C 2/126 ; H04B 7/185 ;
U.S. Cl.
CPC ...
H04Q 7/20 ; G01C 2/126 ; H04B 7/185 ;
Abstract
In a wireless terminal position measuring method for estimating the position of a terminal using signals sent from at least three base stations accommodated by a cellular communication system, position of the terminal is estimates according to the triangulation method by selecting three base stations arbitrarily, a plurality of estimated positions thus calculated are stored in a memory and averaged thereafter to obtain a final estimated position.