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:
Apr. 09, 2002
Filed:
Aug. 28, 1998
Christopher Gordon Gervase Turner, Gauteng, ZA;
Johan Dawid Kruger, Gauteng, ZA;
David Edwin Proctor, Gauteng, ZA;
Supersensor (Proprietary) Limited, Goodwood, ZA;
Abstract
A reader arrangement for an electronic identification system includes a plurality of reader heads to for energizing transponders to .n to be read, and a controller therefor. The controller switches activation of the reader heads in a multi-phase sequential pattern including a first phase for activating a first set and of the reader heads and at least one further phase for activating a further set and of the reader heads. The switching is such that a complete cycle plus at least the first phase of a subsequent cycle is completed within a time period not longer than a reset period of the transponders. The reset period is the period between removal of an energizing signal from a transponder and the transponder re-entering a normal operational mode.