Networked electronic article surveillance systems with synchronized tracking
US10121362B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2017 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Aug 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Systems and methods for operating an Electronic Article Surveillance (“EAS”) system. The method comprising: receiving, by an electronic device, a synchronization signal transmitted from a remote Wireless Device Manager (“WDM”); performing first transmit and receive operations at the electronic device that are synchronized in accordance with the remote WDM's AC power line zero crossing specified by the synchronization signal; detecting when the synchronization signal is no longer being received by the electronic device; and performing second transmit and receive operations at the electronic device that are synchronized in accordance with the electronic device's local AC power line zero crossing, when the synchronization signal has not been received by the electronic device for a specified period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.