Electronic shelf label with action triggering

1. An electronic shelf label ( 2 A- 2 K), which comprises:

a display unit ( 13 A) comprising a display ( 15 ), and which is designed for displaying image content, and

a communication module ( 11 ), which is designed for wireless communication for the purpose of receiving image data, which represent the image content, and for transferring the image data to the display unit ( 13 A),

characterized in that

a detector unit ( 13 B) is provided, which is designed for detecting an incorrect positioning, which differs from a desired positioning, of the electronic shelf label ( 2 A- 2 K), and for outputting an action signal (IR) when the incorrect positioning is detected, and which is designed to digitally store the state of the detection of the incorrect positioning,

and in that

the electronic shelf label ( 2 A- 2 K) is designed to change the image content when the action signal (IR) is present, and to only carry out an image-content-changing activity again following the change of the image content which took place due to the detection of the incorrect positioning, after the stored state of the detection of the incorrect positioning had been deleted with the aid of a communication via the communication module ( 11 ).

2. The shelf label ( 2 A- 2 K) according to claim 1 , wherein the detector unit ( 13 B) comprises a photodiode.

3. The shelf label ( 2 A- 2 K) according to claim 1 , wherein the detector unit ( 13 B) comprises a proximity sensor.

4. The shelf label ( 2 A- 2 K) according to claim 1 , wherein the detector unit ( 13 B) comprises a tilt or inclination sensor.

5. The shelf label ( 2 A- 2 K) according to claim 1 , wherein the detector unit ( 13 B) comprises a time-of-flight sensor.

6. The shelf label ( 2 A- 2 K) according to claim 1 , which comprises a long-term energy storage device ( 13 H) for electrically supplying the detector unit ( 13 B) during its detection activity.

7. The shelf label ( 2 A- 2 K) according to claim 1 , which comprises a long-term energy storage device ( 13 H) for electrically supplying the display unit ( 13 A) during its image-content changing activity.

8. The shelf label ( 2 A- 2 K) according to claim 6 , wherein the communication module ( 11 ):

is designed for wireless communication according to a time slot communication method, wherein in the time slot communication method, a number of time slots in a repeating sequence per time slot cycle are available for communication, each time slot is preferably identified by a unique time slot symbol, and

comprises an energy-saving sleep state, in which it is not ready to communicate, and

comprises an active state, in which it is ready to communicate, and wherein

the communication module ( 11 ) is designed to change from the sleep state to the active state promptly upon the occurrence of the time slot to which the shelf label ( 2 A- 2 K) is assigned, and

wherein the long-term energy storage device ( 13 H) is used for the electrical supply of the detector unit ( 13 B) during the active and the sleep state.

9. The shelf label ( 2 A- 2 K) according to claim 8 , wherein

the long-term energy storage device ( 13 H) is used during the sleep state for the electrical supply of the display unit ( 13 A) during its image-content changing activity.

10. The shelf label ( 2 A- 2 K) according to claim 6 , wherein the communication module ( 11 ):

is designed for communication according to a near field communication—abbreviated to NFC—specification and designed to generate a supply voltage (VCC 1 ) for the shelf label ( 2 A- 2 K) when receiving an NFC signal, wherein the long-term energy storage device ( 13 H) is used for electrically supplying the detector unit ( 13 B) during the absence of the NFC signal.

11. The shelf label ( 2 A- 2 K) according to claim 10 , wherein

the long-term energy storage device ( 13 H) is used during the absence of the NFC signal for the electrical supply of the display unit ( 13 A) during its image-content changing activity.

12. The shelf label ( 2 A- 2 K) according claim 1 , wherein the design for changing the image content comprises the measure that

the display unit ( 13 A) is designed to directly receive the action signal (IR), particularly as an interrupt signal, and as a consequence of the receipt of the action signal (IR), to delete the last-displayed image content.

13. The shelf label ( 2 A- 2 K) according to claim 1 , wherein the design for changing the image content comprises the measure that

the display unit ( 13 A) is caused to display, instead of the last-displayed image content, a message as image content, which displays the internal state of the detection, particularly in combination with a call to action.

14. A shelf label system ( 1 ), which comprises at least one electronic shelf label ( 2 A- 2 K) according to claim 1 .