Electronic shelf label and controlling method therefor

1 . An electronic price indicator comprising:

a display displaying product information;

a near field communication (NFC) module configured to communicate with a user terminal;

a Bluetooth module configured to communicate with the user terminal; and

a processor configured to control the display to display the product information received from the user terminal through the Bluetooth module,

wherein the processor is further configured to

release a sleep mode when receiving an interrupt from the user terminal through the NFC module, and

perform Bluetooth communication with the user terminal by initiating a scan for a predetermined period of time to receive an advertising signal from the user terminal.

2 . The electronic price indicator of claim 1 , wherein the processor is further configured to search for a unique connection key included in the advertising signal, and perform a Bluetooth connection with the user terminal, based on a found unique connection key.

3 . The electronic price indicator of claim 2 , wherein the processor is further configured to return to the sleep mode when the unique connection key is not found from the advertising signal for the predetermined period of time.

4 . The electronic price indicator of claim 1 , wherein the processor is further configured to transmit information of the electronic price indicator to the user terminal through the NFC module according to the interrupt from the user terminal.

5 . The electronic price indicator of claim 4 , wherein the information of the electronic price indicator comprises a media access control (MAC) address, a tag type, and a unique connection key.

6 . The electronic price indicator of claim 5 , wherein the processor is further configured to transmit a connection request to the user terminal when a unique connection key included in the advertising signal from the user terminal is found.

7 . The electronic price indicator of claim 6 , wherein, when a tag type included in the connection request is consistent with a tag type received through the NFC module, the Bluetooth communication with the user terminal is maintained.

8 . The electronic price indicator of claim 6 , wherein, when a MAC address included in the connection request is consistent with a MAC address received through the NFC module, the Bluetooth communication with the user terminal maintains is maintained.

9 . The electronic price indicator of claim 1 , wherein the processor is further configured to generate the interrupt according to an NFC touch of the user terminal, and the generated interrupt triggers the Bluetooth module.

10 . A control method of an electronic price indicator, the control method comprising:

releasing a sleep mode when receiving an interrupt from a user terminal through a near field communication (NFC) module;

initiating a scan for a predetermined period of time to receive an advertising signal from the user terminal; and

performing Bluetooth communication with the user terminal.

11 . The control method of claim 10 , further comprising

searching for a unique connection key included in the advertising signal,

wherein a Bluetooth connection with the user terminal is performed based on a found unique connection key.

12 . The control method of claim 11 , further comprising, when the unique connection key is not found from the advertising signal for the predetermined period of time, returning to the sleep mode.

13 . The control method of claim 11 , further comprising, when the unique connection key included in the advertising signal from the user terminal is found, transmitting a connection request to the user terminal.

14 . The control method of claim 13 , wherein, when a tag type included in the connection request is consistent with a tag type received through the NFC module and a MAC address included in the connection request is consistent with a MAC address received through the NFC module, the Bluetooth communication is maintained.

15 . A computer-readable recording medium having recorded thereon a program for executing the control method of an electronic price indicator of claim 10 .