Apparatus for deactivation of electronic article surveillance tags
US5493275A · kind A · utility
27Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Aug 9, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2411
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A deactivator for deactivating electronic article surveillance tags includes a deactivating coil, drive circuitry controllable for supplying driving signals to the deactivating coil, a reference signal generator for generating a reference signal having preselected characteristics varying with time, a comparator for comparing characteristics of the driving signals with the reference signal characteristics, and a control unit for controlling the drive circuitry in accordance with signal comparisons effected by the comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.