Wireless synchronization of pulsed magnetic EAS systems
US6201469A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2488
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.