Display apparatus, upgrading apparatus, display system and control method thereof

A display apparatus comprising:

• an image processor which processes an image signal;
• a connector which connects with an upgrading apparatus for updating at least one function of the display apparatus;
• a storage which stores a program for allowing the upgrading apparatus to implement an operation corresponding to an upgrade of the function;
• a communicator which communicates with a program providing apparatus for updating the program;
• and
• a controller which updates the program, stored in the storage, based on an update file received from the program providing apparatus, and controls the upgrading apparatus to access at least a part of the updated program to execute the program.

A method of controlling a display apparatus displaying an image based on an image signal, the method comprising:

• connecting the display apparatus with an upgrading apparatus for upgrading at least one function of the display apparatus;
• updating a program stored in the display apparatus, based on data received from a program providing apparatus, such that the upgrading apparatus perform an operation corresponding to an upgrade of the function;
• and
• accessing by the upgrading apparatus at least a part of the updated program to execute the program.

A method of controlling an upgrading apparatus of a display apparatus, the method comprising:

• connecting the upgrading apparatus to the display apparatus displaying an image;
• transmitting upgrade information about a function to be upgraded from the upgrading apparatus to the display apparatus;
• and
• processing an image signal corresponding to the image displayed by the display apparatus using the upgraded function.

A display system comprising:

• an display apparatus which comprises a first image processor to process an image signal, and a display to display an image based on an image signal;
• and
• an upgrading apparatus which is connected to the display apparatus and comprises a second image processor to process the image signal,
• wherein if the upgrading apparatus is connected to the display apparatus, the upgrading apparatus transmits function information to be upgraded by the upgrading apparatus to the display apparatus, the display apparatus receives the function information to be upgraded from the upgrading apparatus, and the received function information is displayed on the display.

A method of controlling a display system comprising a display apparatus provided with a first image processor, and an upgrading apparatus connectable to the display apparatus and comprising a second image processor, the method comprising:

• deactivating the upgrading apparatus if a test of performance is requested in which performance of the upgrading apparatus before and after the upgrading apparatus is connected to the display apparatus, is tested;
• testing the performance of the display apparatus in a state in which the upgrading apparatus is deactivated;
• activating the upgrading apparatus;
• testing the performance of the display apparatus in the state in which the upgrading apparatus is activated;
• and
• displaying results of the testing.

A method of controlling a display system comprising a display apparatus, and an upgrading apparatus comprising software for upgrading the display apparatus, the method comprising:

• determining whether the upgrading apparatus connected to the display apparatus is authenticated;
• transmitting, by an update server, an update file for software to the display apparatus if the upgrading apparatus is authenticated;
• transmitting, by the display apparatus, the update file for the software to the upgrading apparatus;
• and
• updating the software of the upgrading apparatus based on the received update file for the software,
• wherein the update file for the software comprises a universal software update file for the upgrading apparatus.