公开(公告)号：US20220270554A1

公开(公告)日：2022-08-25

申请号：US17682048

申请日：2022-02-28

Applicant: TOPPAN Inc.

Inventor： Katsuhiko MOROSAWA

IPC: G09G3/34 ,  G02F1/167 ,  G02F1/1685

Abstract: An information display device includes a display that displays information, a communication unit that contactlessly communicates with an information communication medium, a communication control unit including a transceiver and a power converter such that the transceiver receives the display information from the information communication medium through the communication unit and that the power converter converts an electromagnetic wave received by the communication unit into electric power, and a display control unit including a storage, a voltage monitor, and a display driver such that the storage stores the display information received by the transceiver, that the voltage monitor monitors a voltage of electric power supplied from the power converter, and that the display driver updates, based on the display information stored in the storage, the information displayed on the display.