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:
May. 01, 2007
Filed:
May. 03, 2002
Robert W. Boyd, Rogersville, TN (US);
Donald K. Belcher, Rogersville, TN (US);
Michael A. Wohl, Rogersville, TN (US);
David S. Wisherd, Sunnyvale, CA (US);
Robert W. Boyd, Rogersville, TN (US);
Donald K. Belcher, Rogersville, TN (US);
Michael A. Wohl, Rogersville, TN (US);
David S. Wisherd, Sunnyvale, CA (US);
Wherenet Corp, Santa Clara, CA (US);
Abstract
A location system includes a plurality of signal readers for receiving signals from a wireless transmitter to be located. The signals include a wideband, spread spectrum signal and a timing marker appended a predetermined time in front of the wideband, spread spectrum signal for indicating the presence of the wideband, spread spectrum signal. A location processor is operatively coupled to the signal readers for detecting the timing markers of signals and responsive to a detection of a timing marker, correlating a signal as a first-to-arrive signal and conducting differentiation of first-to-arrive signals to locate a wireless transmitter.