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

摘要

A display apparatus, an upgrading apparatus, a display system, and a control method thereof. The display apparatus (100) includes: an image processor (120) which processes an image signal; a display (130) which displays an image based on the processed image signal; a connector (140) to which an upgrading apparatus (200) for processing the image signal is connected; a controller (170) 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..