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:
Jul. 05, 2005
Filed:
May. 15, 2001
Philip R. Mckee, Frisco, TX (US);
Eric J. Moeller, Plano, TX (US);
Fredrick L. Bauer, Colleyville, TX (US);
Philip R. McKee, Frisco, TX (US);
Eric J. Moeller, Plano, TX (US);
Fredrick L. Bauer, Colleyville, TX (US);
Praxis Technology Group, Inc., Dallas, TX (US);
Abstract
A system () for determining a presence, identity, and duration of presence in a given area of an object includes one or more mobile transmitters () that periodically send out a beacon signal. A node () includes a receiver () that receives a beacon signal whenever a mobile transmitter () is within a threshold range of the node (). The node () includes a controller () that determines a signal strength of each received beacon signal. The controller () compares the signal strength of each received beacon signal to a reference signal strength associated with the threshold range in order to determine whether the mobile transmitter () was within the desired detection area of the node (). A base unit () sorts received information packets for processing by a base computer () in order to determine what mobile transmitter () was at what node () and for how long.