Access point device that interfaces between electronic label device and management server

An access point device that interfaces between an electronic label device including a display and a management server, comprising:

• a server communication circuit connected to the management server through a first network;
• a wireless communication circuit connected to the electronic label device through a second network;
• a memory in which a display template including program instructions and configuration information of a display are stored;
• and
• a processor configured to execute the program instructions,
• wherein the program instructions, when executed by the processor, perform:
• a reception control operation of color display control data to control the server communication circuit to receive the color display control data from the management server;
• a reception operation of the color display control data to receive the color display control data from the server communication circuit;
• a processing operation of the color display control data to process the color display control data;
• a generation operation of color image data to generate the color image data to be displayed on the display from the color display control data according to the display template stored in the memory, but generating the color image data differently according to the configuration information of the display;
• and
• a transmission control operation of the color image data to control a wireless communication circuit to receive the color image data and wirelessly transmit the color image data to the electronic label device.