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. 07, 2004
Filed:
Jun. 27, 2002
Applicant:
Inventors:
Charles B. Swope, Coral Springs, FL (US);
Chet A. Lampert, Plantation, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 1/700 ; G01C 1/900 ; G01C 9/00 ; G06F 1/500 ;
U.S. Cl.
CPC ...
G01C 1/700 ; G01C 1/900 ; G01C 9/00 ; G06F 1/500 ;
Abstract
A first set of coordinates ( ) of a device and an estimated positional error (“EPE”) radius ( ) is measured. An EPE circle ( ) is derived, in which the device is approximately located, from the first set of coordinates ( ) and the EPE radius ( ). When it is determined that the EPE radius ( ) exceeds a predetermined threshold, a first range ( ) between the device and a ranging site ( ) is measured, and a locus of points ( ) on and within the EPE circle ( ) is determined, wherein a distance between the ranging site ( ) and each point in the locus of points ( ) approximately equals the first range ( ).