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:
Dec. 06, 2005
Filed:
Sep. 30, 2004
Charles B. Swope, Coral Springs, FL (US);
Jason A. Rapps, Tamarac, FL (US);
Julio A. Sanchez, Coral Springs, FL (US);
Daniel A. Tealdi, Hialeah, FL (US);
Charles B. Swope, Coral Springs, FL (US);
Jason A. Rapps, Tamarac, FL (US);
Julio A. Sanchez, Coral Springs, FL (US);
Daniel A. Tealdi, Hialeah, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A location determination system () utilizes a low accuracy timing infrastructure () to synchronize a personal tracking device () having high accuracy timing location determination devices integrated therein. The PTD () includes a radio frequency (RF) location unit () and integrated sensors, such as altimeter (), GPS receiver () and inertial navigation unit (IMU) (). The RF location unit () receives a synchronization command from the low accuracy timing infrastructure () and provides timing data representing range information in response thereto. The range information is used by the high accuracy timing infrastructure () to compute updated X, Y, Z coordinates of the PTD ().