Patent ID: 11915672
Assignee: HANSHOW TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 13:
14. The method according to claim 11, wherein the electronic shelf label comprises an infrared sensor, a near-field communication (NFC) acquisition circuit, and a main controller connected to the infrared sensor and the NFC acquisition circuit; and
wherein electronic shelf label modifies the frame-listening cycle of the current time period to the fast frame-listening cycle in response to receiving the external trigger signal comprises:
the infrared sensor sends a frame-listening cycle modification signal in response to acquiring a human body approaching signal or in response to determining that the NFC acquisition circuit acquires an NFC communication signal;
the main controller modifies the frame-listening cycle of the current time period to the fast frame-listening cycle according to the frame-listening cycle modification signal; and
the main controller sends a heartbeat signal comprising the current frame-listening cycle to the base station, so that the base station sends the current frame-listening cycle of the electronic shelf label to the server.