ELECTRONIC SHELF LABEL TAG, ELECTRONIC SHELF LABEL SYSTEM AND OPERATION METHOD THEREOF

摘要

An electronic price display apparatus according to an embodiment of the present invention comprises: a communication unit to wirelessly communicate with an electronic price display relay apparatus; and a control unit to determine whether display information is updated by confirming an identifier of an update target electronic price display apparatus included in a wake-up frame received through the communication unit and to transmit an information request packet to the electronic price display relay apparatus by applying a random delay method in a contention window size included in the wake-up frame when the update is necessary.