Mobile terminal, image display device and user interface provision method using the same

1. A method of controlling a system including a display device and a mobile terminal, the method comprising:

performing, in the display device, a data communication with the mobile terminal wirelessly;

capturing, in the mobile terminal, a current screen;

generating, in the mobile terminal, screen information based on the captured current screen;

setting, in the mobile terminal, right and left margins in the screen information when the mobile terminal is in a portrait mode and the display device is in a landscape mode;

transmitting, in the mobile terminal, the screen information with the right and left margins to the display device wirelessly, when the mobile terminal is in the portrait mode and the display device is in the landscape mode;

displaying, in the display device, a first mirroring image with the right and left margins based on the screen information when the mobile terminal is in the portrait mode and the display device is in the landscape mode;

setting, in the mobile terminal, upper and lower margins in the screen information when the display device is in a portrait mode and the mobile terminal is in a landscape mode;

transmitting, in the mobile terminal, the screen information with the upper and lower margins to the display device wirelessly, when the display device is in the portrait mode and the mobile terminal is in the landscape mode; and

displaying, in the display device, a second mirroring image with the upper and lower margins based on the screen information when the display device is in the portrait mode and the mobile terminal is the landscape mode.

2. The method of claim 1 , further comprising:

transmitting, in the display device, data on a screen posture direction of the display device to the mobile terminal wirelessly, wherein the display device is able to be in the portrait mode or the landscape mode; and

sensing, in the mobile terminal, a screen posture direction of the mobile terminal; and

comparing, in the mobile terminal, the sensed screen posture direction of the mobile terminal with the data on the screen posture direction of the display device.

3. The method of claim 2 , further comprising:

transmitting, in the mobile terminal, audio information to the display device wirelessly such that the audio information is output via a speaker of the display device while the first or second mirroring image is output via a screen of the display device.

4. The method of claim 3 , further comprising:

when the display device corresponds to a source device and the mobile terminal corresponds to a sink device, transmitting, in the display device, another screen information being different than the screen information to the mobile terminal wirelessly.

5. The method of claim 4 , further comprising:

transmitting, in the mobile terminal, information for a decoding method supported by the mobile terminal to the display device wirelessly, wherein the another screen information is generated by the display device based on an encoding method corresponding to the decoding method supported by the mobile terminal.

6. A mobile terminal capable of connecting to a display device wirelessly, the mobile terminal comprising:

a short range communication module configured to perform a data communication with the display device wirelessly;

a display unit configured to output a current screen; and

a controller coupled with the short range communication unit and the display unit, wherein the controller is configured to:

capture the current screen displayed in the display unit;

generate screen information based on the captured current screen;

set right and left margins in the screen information and cause the short range communication unit to transmit the screen information with the right and left margins to the display device wirelessly when the mobile terminal is in a portrait mode and the display device is in a landscape mode; and

set upper and lower margins in the screen information and cause the short range communication unit to transmit the screen information with the upper and lower margins to the display device wirelessly when the display device is in a portrait mode and the mobile terminal is in a landscape mode.

7. The mobile terminal of claim 6 , wherein the controller is further configured to:

cause a sensing unit to sense a screen posture direction of the mobile terminal;

cause the short range communication unit to receive data on a screen posture direction of the display device from the display device wirelessly, wherein the display device is able to be in the portrait mode or the landscape mode; and

compare the sensed screen posture direction of the mobile terminal with the data on the screen posture direction of the display device.

8. The mobile terminal of claim 7 , wherein the controller is further configured to:

cause the short range communication unit to transmit audio information to the display device wirelessly such that the audio information is output via a speaker of the display device while a mirroring image is output via a screen of the display device.

9. A display device capable of connecting to a mobile terminal wirelessly, the display device comprising:

a display;

an audio output unit;

a wireless signal input unit configured to perform a data communication with the mobile terminal wirelessly; and

a controller coupled with the wireless signal input unit, the audio output unit and the display, wherein the controller is configured to:

cause the wireless signal input unit to receive screen information and audio information from the mobile terminal wirelessly;

cause the display to display a first mirroring image based on the screen information when the mobile terminal is in a landscape mode and the display device is in a landscape mode;

cause the display to display a second mirroring image with right and left margins based on the screen information when the mobile terminal is in a portrait mode and the display device is in the landscape mode; and

cause the display to display a third mirroring image with upper and lower margins based on the screen information when the display device is in a portrait mode and the mobile terminal is the landscape mode.

10. The display device of claim 9 , wherein the controller is further configured to:

control the wireless signal input unit to receive the upper and lower margins with the screen information and the audio information from the mobile terminal wirelessly when the display device is in the portrait mode and the mobile terminal is in the landscape mode.

11. The display device of claim 10 , wherein the controller is further configured to:

control the wireless signal input unit to receive the right and left margins with the screen information and the audio information from the mobile terminal wirelessly when the mobile terminal is in the portrait mode and the display device is in the landscape mode.

12. The display device of claim 11 , wherein the controller of the display device is further configured to:

measure a screen posture direction of the display device, and the wireless signal input unit is further configured to transmit data on the screen posture direction of the display device to the mobile terminal wirelessly.

13. The display device of claim 12 , wherein the audio output unit is configured to output the same audio information regardless of the display device's mode and the mobile terminal's mode.

14. The display device of claim 13 , wherein the wireless signal input unit configured to perform the data communication based on NFC.

15. The display device of claim 14 , wherein the display device corresponds to a source device and the mobile terminal corresponds to a sink device, and

wherein the controller is further configured to:

cause the wireless signal input unit to receive information for a decoding method supported by the mobile terminal from the mobile terminal wirelessly;

generate another screen information being different than the screen information based on an encoding method corresponding to the decoding method supported by the mobile terminal; and

cause the wireless signal input unit to transmit the another screen information to the mobile terminal.

16. The display device of claim 9 , wherein the display device corresponds to a television having a tuner configured to receive a broadcast signal from a broadcast station and an user interface configured to receive a command from a remote controller.

17. The display device of claim 9 , wherein the screen information relates to a current screen captured by the mobile terminal.