ELECTRONIC SHELF LABEL, ELETRIC SHELF LABEL SYSTEM WITH PARTIAL IMAGE UPDATE, AND OPERATION METHOD THEREOF

摘要

According to an embodiment of the present invention, an electronic price display device can comprise: a memory unit storing a basic image which has changing and unchanging areas; a wireless communication unit receiving an update image, which has a marginal area and a display area, from an external communication device; and a control unit overlapping the unchanging area with the marginal area of the update image, and overwriting the changing area with the display area.