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:
Dec. 17, 2002
Filed:
Mar. 20, 1998
Victor Allen Vega, Hercules, CA (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A radio frequency identification tag ( ) includes stored tag information ( ) and at least one antenna element ( ). The tag also includes a programmable tag circuit state that is either “on” or “off” based on an “on/off” command signal ( ) received by the antenna element. When the tag circuit state is “on,” upon receiving an exciter signal ( ) from a proximately-located electrostatic exciter ( ), the tag becomes energized, thereby causing it to generate a read signal ( ) containing a carrier signal ( ) and based on the stored tag information. The antenna element then electrostatically sends the read signal to a proximately-located reader ( ), which detects the carrier signal and, under proper conditions, also the stored tag information.