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, 2012
Filed:
Dec. 18, 2007
Steven George Hemmer, Lake Worth, FL (US);
Charles Russell Eurich, Coconut Creek, FL (US);
Steven George Hemmer, Lake Worth, FL (US);
Charles Russell Eurich, Coconut Creek, FL (US);
UTC Fire & Security Americas Corporation, Inc., Bradenton, FL (US);
Abstract
An improved battery-powered credential reader, which may be used in security and other applications, includes include a micro-power proximity detector. The micro-power proximity detector is configured to lengthen battery life by reducing power consumption requirements of the credential reader during periods when no credential is present. An antenna formed about a perimeter of a printed circuit board is configured to propagate an electrostatic sense field adjacent to and through the credential reader using only microamps of electrical current. A control circuit of the micro-power proximity detector is configured to activate the credential reader from a 'sleep' state when a disturbance in the electrostatic sense field caused by a credential is detected and/or registered.