Display apparatus using key signals and control method thereof

摘要

A display apparatus including an image processor which processes a video signal is provided. The display apparatus includes; a display which displays an image based on a processed video signal; a receiver which receives a key signal input by a user; a storage which stores a password key; and a controller which receives a user's first key signal which comprises an arrow key signal when a password is set up for the display apparatus, sets up and stores the password key which corresponds to the received first key signal, receives a user's second key signal when access is attempted, and allows the access in response to the received second key signal and the stored password key matching each other through a comparison.