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:
Jun. 11, 2024
Filed:
Nov. 05, 2021
Applicant:
Centrak, Inc., Newtown, PA (US);
Inventor:
Karuppiah Annamalai, Yardley, PA (US);
Assignee:
CenTrak, Inc., Newtown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/029 (2018.01); G01S 5/00 (2006.01); G01S 5/02 (2010.01); H04W 4/33 (2018.01);
U.S. Cl.
CPC ...
H04W 4/029 (2018.02); G01S 5/0081 (2013.01); G01S 5/0226 (2013.01); G01S 5/02585 (2020.05); H04W 4/33 (2018.02);
Abstract
A system and methods are disclosed for synchronizing two or more groups of base stations in a wireless location system. In one embodiment, a first wireless base station belonging to a first group of wireless base stations transmits a first RF beacon for synchronizing the first group of wireless base stations and a second RF beacon that is used to synchronize a second group of wireless base stations. Wireless base stations in the first and second groups transmit respective non-RF (e.g., infrared, ultrasound, etc.) beacons that can be used to locate a portable tag.