EAS PULSE TRANSMISSION SYNCHRONIZATION

摘要

Interference in an electronic article surveillance (EAS) system is reduced by transmitting warning pulse at a predetermined time following the EAS marker exciter pulse. The predetermined time and duration of the warning pulse are chosen so that the warning pulse acts upon a noise interference avoidance process in a second non-cooperative EAS unit. More particularly, the warning electromagnetic pulse causes a timing change in a second synchronized electromagnetic exciter pulse produced by the second EAS unit when the second synchronized electromagnetic, exciter pulse is concurrent with the first receive interval. This timing change causes the second EAS unit to no longer interfere with the first EAS unit.