SYSTEM AND METHOD OF AUTOMATICALLY AVOIDING SIGNAL INTERFERENCE BETWEEN PRODUCT PROXIMITY SUBSYSTEMS THAT EMIT SIGNALS THROUGH MUTUALLY FACING PRESENTATION WINDOWS OF DIFFERENT WORKSTATIONS

摘要

Signal interference is automatically avoided between product proximity subsystems that emit signals through mutually facing presentation windows of different workstations. A magnetometer in each workstation determines a direction faced by a respective presentation window. A controller in each workstation controls a respective product proximity subsystem to emit and receive a signal with a first signal characteristic when the respective magnetometer determines that the respective presentation window faces a first direction, and controls a respective product proximity subsystem to emit and receive a signal with a different second signal characteristic when the respective magnetometer determines that the respective presentation window faces a different second direction.

主权项

1. A system for automatically avoiding signal interference between product proximity subsystems that emit signals through mutually facing presentation windows of different workstations, comprising:
a magnetometer in each workstation, each magnetometer being operative for determining a direction faced by a respective presentation window; and a controller in each workstation and operatively connected to each magnetometer and each product proximity subsystem, each controller being operative for controlling a respective product proximity subsystem to emit and receive a signal with a first signal characteristic when the respective magnetometer determines that the respective presentation window faces a first direction, and for controlling a respective product proximity subsystem to emit and receive a signal with a second signal characteristic, which is different from the first signal characteristic, when the respective magnetometer determines that the respective presentation window faces a second direction, which is different from the first direction.