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:
Jan. 04, 2000
Filed:
Sep. 17, 1996
Peter H Plocher, Duluth, GA (US);
NCR Corporation, Dayton, OH (US);
Abstract
A system and method of locating a wireless device which relies on signal strength measurements and the known positions of receiving sensors. The system includes a number of transceivers each including a transmitter which transmits a first signal to the wireless device, a plurality of receivers including a plurality of sensors and at least one signal strength determining circuit for determining signal strengths of second signals received by the sensors, and a control circuit for controlling transmission of the first signal and reception of the second signals. A storage medium contains the locations for each of the sensors. A computer coupled to the control circuit instructs the control circuit to transmit the first signal and determines a location of the wireless device from the signal strengths and from the locations of the sensors.