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:
Mar. 13, 2001
Filed:
Feb. 12, 1999
Brent F. Balch, Fort Lauderdale, FL (US);
William R. Accolla, Andover, MA (US);
John A. Allen, Methuen, MA (US);
James A. Cook, Boynton Beach, FL (US);
Sensormatic Electronics Corporation, Boca Raton, FL (US);
Abstract
A method for wireless synchronization of a first and second magnetic electronic article surveillance (EAS) systems arranged for operation in close proximity to one another. The method includes the steps of programming each of the first and second EAS systems for transmitting at least one unique signal into a partially overlapping interrogation zone of the EAS systems and for receiving any signals from the interrogation zones at respective and predetermined transmit and receive phases relative to a common reference. The first EAS system transmits at least one unique signal containing phase information which is received and identified at the second EAS system during one of its receiver phases as the one unique signal. The second EAS system uses the conveyed phase information received to transmit synchronously with transmissions from the first EAS system.