Display apparatus, control method thereof, upgrade apparatus, and display system to authorize the upgrade operation when the booting operation is completed.

摘要

A display apparatus including: a display device; an image processor processing an image signal received from an image source according to a preset image processing process to display an image on the display device; a connector to which an upgrade apparatus upgrades the image processing process is connected and to which a server is connected to communicate with; and a controller comparing a first pairing key with a second pairing key stored in the server and selectively allowing or blocking a booting operation according to a comparison result, the first pairing key being generated based on a pre-stored first identification of the display apparatus and a second identification of the upgrade apparatus obtained from the upgrade apparatus when the display apparatus starts booting up.