Digital signage system and data processing method in the same

1. A digital signage system comprising:

a first display device;

a second display device arranged a first spatial distance from the first display device, wherein the second display device has a display screen that at least partially overlaps a display screen on the first display device; and

a controller configured to:

control the first display device to display single image data at a first time, and

control the second display device to display the single image data at a second time based on the first spatial distance between the first display device and the second display device, wherein at least one of the first display device or the second display device is a transparent display, and

wherein the controller is further configured to:

detect a third display device being different from the first and second display devices and having a display screen that at least partially overlaps the display screen on the second display device has been positioned between the first display device and the second display device,

determine a second spatial distance between the first display device and the third display device, and a third spatial distance between the third display device and the second display device,

control the first display device to display the single image data at the first time,

control the third display device to display the single image data at a third time based on the second spatial distance, and

control the second display device to display the single image data at a fourth time based on the third spatial distance.

2. The digital signage system according to claim 1 , wherein the first spatial distance is equal to the second spatial distance.

3. The digital signage system according to claim 1 , wherein the first spatial distance is not equal to the second spatial distance.

4. The digital signage system according to claim 1 , wherein the controller is further configured to:

control the first display device to display the single image data with a first size on a position of the display screen of the first display device, and

control the second display device to display the single image data with the first size on a same corresponding position of the display screen of the second display device.

5. The digital signage system according to claim 1 , wherein the controller is further configured to:

control the first display device to display the single image data with a first size on a position of the display screen of the first display device, and

control the second display device to display the single image data with a second size on a same corresponding position of the display screen of the second display device.

6. The digital signage system according to claim 1 , wherein the controller is further configured to:

control the first display device to display the single image data with a first size on a position of the display screen of the first display device, and

control the second display device to display the single image data with a second size on a different corresponding position of the display screen of the second display device.

7. The digital signage system according to claim 1 , wherein the controller is further configured to:

change the first spatial distance between the first display device and the second display device.

8. The digital signage system according to claim 1 , wherein at least one of the first display device and the second display device includes a lamp unit, and

wherein the controller is further configured to differently control a brightness of the first display device and the second display device using the lamp unit.

9. The digital signage system according to claim 8 , wherein the controller is further configured to control the lamp unit to emit light when the single image data is displayed.

10. The digital signage system according to claim 8 , wherein when the first display device is farther from a reference than the second display device, the controller is further configured to control the lamp unit of the first display device to be darker than the second display device.

11. The digital signage system according to claim 1 , wherein the controller is further configured to:

detect the first spatial distance between the first display device and the second display device is changed, and

control the second display device to display the single image data at a third time based on the changed spatial distance between the first display device and the second display device.

12. The digital signage system according to claim 1 , wherein the controller is included in a server of the digital signage system.

13. The digital signage system according to claim 1 , wherein the first display device and the second display device are aligned in series from a reference such that the display screen of the second display device at least partially overlaps the display screen on the first display device.

14. The digital signage system according to claim 1 , wherein the first display device has a first size and the second display device has a second size different than the first size.

15. The digital signage system according to claim 1 , wherein the first display device located farthest from a reference is not the transparent display and the second display device closest to the reference is the transparent display.

16. A method of controlling a digital signage system including a first display device and a second display device arranged a first spatial distance from the first display device, wherein the second display device has a display screen that at least partially overlaps a display screen on the first display device, the method comprising:

controlling the first display device to display single image data at a first time;

controlling the second display device to display the single image data at a second time based on the first spatial distance between the first display device and the second display device;

detecting a third display device being different from the first and second display devices positioned between the first display device and the second display device, wherein the third display device has a display screen that at least partially overlaps the display screen on the second display device;

determining a second spatial distance between the first display device and the third display device, and a third spatial distance between the third display device and the second display device;

controlling the first display device to display the single image data at the first time;

controlling the third display device to display the single image data at a third time based on the second spatial distance; and

controlling the second display device to display the single image data at fourth time based on the third spatial distance,

wherein at least one of the first display device or the second display device is a transparent display.