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:
Jul. 17, 2018
Filed:
May. 11, 2016
Applicant:
Kenichi Nakagawa, Tokyo, JP;
Inventor:
Kenichi Nakagawa, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2018.01); H04W 4/02 (2018.01); H04W 4/04 (2009.01); H04W 64/00 (2009.01); G01S 5/02 (2010.01); H04W 4/029 (2018.01); H04W 4/80 (2018.01);
U.S. Cl.
CPC ...
H04W 4/04 (2013.01); G01S 5/0252 (2013.01); H04W 4/029 (2018.02); H04W 4/043 (2013.01); H04W 4/80 (2018.02); H04W 64/006 (2013.01); Y02D 70/10 (2018.01);
Abstract
A position management system manages position information of a second apparatus which carries out wireless communications with a first apparatus that is installed indoors. The position management system determines radio field intensity of radio waves of the wireless communications that are received from the first apparatus when movement of the second apparatus is detected, acquires first position information that indicates a position of the second apparatus estimated based on the determined radio field intensity of the radio waves, and stores the acquired first position information associated with time information.