Electronic tags, ELS system, method for setting time information of ELS system and method for operating ELS system

摘要

An Electronic shelf labelling tag, method and system allows electronic tags 100 to possess real-time information, calibrate the time information to be approximate to time information of a server 10 and perform a reservation function by using the time information. The electronic tag for displaying product information comprises a control unit which appropriates time information form a server and maintains real time information. Time information is stored in first and second registers on the tag. In particular the server carries out division of the wakeup signal generated for a plurality of devices and transfers time information with the divided wakeup signal sent to each tag. The system further includes subsequent calibration time information signals sent at predetermined intervals.