Display apparatus and method of controlling display apparatus

1. A display apparatus wirelessly connectable with a host apparatus, the display apparatus comprising:

a communication interface configured to wirelessly receive first image data, generated by the host apparatus, from the host apparatus;

a user interface configured to display image data; and

a controller configured to control the user interface to generate, by the display apparatus, second image data, that is not based on image data received by the display apparatus from the host apparatus, by operations of an operating system of the display apparatus,

wherein the communication interface is further configured to detect a state of a wireless connection with the host apparatus as being in a connected state or a disconnected state, and

wherein the controller, according to the detected state of the wireless connection with the host apparatus, controls the user interface to display at least one of the second image data generated by the display apparatus and the received first image data generated by the host apparatus.

2. The apparatus as claimed in claim 1 , wherein:

while the received first image data is being displayed, when the state of the wireless connection with the host apparatus is in the disconnected state, the controller controls the user interface to display the generated second image data, and

while the second image data is being displayed, when the state of the wireless connection with the host apparatus is in the connected state, the controller controls the user interface to display the received first image data.

3. The apparatus as claimed in claim 1 , wherein when the wireless connection with the host apparatus is in the connected state, the user interface is further configured to receive a selection of image data to be displayed on the user interface by a user.

4. The apparatus as claimed in claim 3 , wherein the controller controls the user interface to display the generated second image data or the received first image data according to the received selection by the user.

5. The apparatus as claimed in claim 1 , wherein when the wireless connection with the host apparatus is in the connected state, the controller controls the user interface to display the received first image data and the generated second image data together.

6. The apparatus as claimed in claim 1 , wherein the communication interface receives the first image data and voice data corresponding to the first image data, and

wherein the user interface outputs the voice data at the same time with displaying the first image data.

7. The apparatus as claimed in claim 1 , wherein the received first image data is encoded image data,

wherein the display apparatus further comprises a decoder which performs hardware decoding of the received first image data, and

wherein the user interface displays the hardware-decoded first image data.

8. The apparatus as claimed in claim 1 , wherein the wireless communication method is 802.11n or 802.11ac which uses a 5 Ghz band.

9. A method of controlling a display apparatus wirelessly connectable with a host apparatus, the method comprising:

wirelessly receiving first image data, generated by the host apparatus, from the host apparatus;

generating, by the display apparatus, second image data, that is not based on image data received by the display apparatus from the host apparatus, by operations of an operating system of the display apparatus;

detecting a state of a wireless connection with the host apparatus as being in a connected state or a disconnected state; and

displaying at least one of the second image data generated by the display apparatus and the received first image data generated by the host apparatus according to the detected state of the wireless connection with the host apparatus.

10. The method as claimed in claim 9 , wherein the displaying comprises:

while the received first image data is being displayed, when the state of the wireless connection with the host apparatus is in the disconnected state, displaying the generated second image data, and

while the second image data is being displayed, when the state of wireless connection with the host apparatus is in the connected state, displaying the received first image data.

11. The method as claimed in claim 9 , further comprising:

when the wireless connection with the host apparatus is in the connected state, receiving a selection of image data to be displayed on the user interface by a user.

12. The method as claimed in claim 9 , wherein the displaying comprises:

when the wireless connection state with the host apparatus is in the connected state, displaying the received first image data and the generated second image data together.

13. The method as claimed in claim 9 , further comprising:

when the wireless connection with the host apparatus is in the connected state, receiving a selection of an image data to be displayed on the user interface of the display apparatus;

wherein the displaying comprises displaying the generated second image data or the received first image data according to the received user selection.

14. The method as claimed in claim 9 , wherein the receiving comprises receiving the first image data and voice data corresponding to the first image data,

wherein the displaying comprises outputting the voice data at the same time as displaying the received first image data.

15. The method as claimed in claim 9 , wherein the received first image data is encoded image data,

wherein the control method further comprises hardware decoding of the received first image data; and

the displaying comprises displaying the hardware decoded first image data.

16. The method as claimed in claim 9 , wherein the wireless communication method is 802.11n or 802.11ac which uses a 5 Ghz band.