Abstract:
A display apparatus, an upgrading apparatus, a display system, and a control method thereof. The display apparatus includes: an image processor which processes an image signal; a display which displays an image based on the processed image signal; a connector to which an upgrading apparatus for processing the image signal is connected; a controller which controls the connector to receive upgrade information about a function to be upgraded from the upgrading apparatus if the upgrading apparatus is connected to the display apparatus through the connector, and controls the display to display the received upgrade information. Thus, a user can easily recognize the functions improved or added by the upgrade as compared with that before the upgrade, and a user may become more comfortable and confident about the upgrade.