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:
Apr. 12, 2005
Filed:
Feb. 07, 2001
James M. Rochelle, Knoxville, TN (US);
David M. Binkley, Charlotte, NC (US);
Lloyd G. Clonts, Lenoir City, TN (US);
Brian K. Swann, Seymour, TN (US);
Rungwit Sangsingkeow, Knoxville, TN (US);
James M. Rochelle, Knoxville, TN (US);
David M. Binkley, Charlotte, NC (US);
Lloyd G. Clonts, Lenoir City, TN (US);
Brian K. Swann, Seymour, TN (US);
Rungwit Sangsingkeow, Knoxville, TN (US);
CMS Partners, Inc., Knoxville, TN (US);
Abstract
A proximity detection system for determining when a single channel receiver becomes proximate to any point on a wireless closed boundary continuously generated by a transmitter. The transmitter includes a magnetic field generator broadcasting a composite, modulated, time-varying magnetic field signal of a particular carrier frequency. The receiver forms a measure of the broadcast magnetic field intensity incident to the location of the receiver or a measure of the power or energy of incident field.