Display apparatus

A display apparatus for communicating with a computer main body through a digital packet video link (DPVL) system, the display apparatus comprising:

• a video signal processor to process a video signal output from a computer main body into a displayable video signal;
• a frame buffer to store frame information corresponding to the video signal;
• a power supply to supply power to the display apparatus;
• and
• a controller to control the video signal processor to display a picture based on the frame information stored in the frame buffer when a predetermined shutdown signal is output from the computer main body, and control the power supply to interrupt the power supplied to the display apparatus when a predetermined period has elapsed after receiving the shutdown signal to enter a power saving mode.

A display apparatus for communicating with a computer main body through a digital packet video link (DPVL) system, the display apparatus comprising:

• a video signal processor to process a video signal output from a computer main body into a displayable video signal;
• a frame buffer to store frame information corresponding to the video signal;
• an on screen display (OSD) generator to generate a shutdown message to indicate a shutdown state;
• a key input part to allow a user to input a key;
• and
• a controller to control the OSD generator to display the shutdown message when a query relating to a current state of the display apparatus is received through the key input part while the display apparatus receives the shutdown signal from the computer main body and displays a picture based on the frame information stored in the frame buffer.

A method for controlling a communication between a display apparatus and a computer main body through a digital packet video link (DPVL) system, comprising:

• processing a video signal output from a computer main body into a displayable video signal;
• storing frame information corresponding to the video signal;
• and
• displaying a picture based on the frame information when a predetermined shutdown signal is output from the computer main body, and changing the picture on the basis of the stored frame information when a predetermined period has elapsed after receiving the shutdown signal.