Remote control method and remote control system using mobile terminal

A method of remotely controlling an image processing device, the method comprising:

• searching for and pairing with a mobile terminal, which is performed by an image processing device;
• receiving screen state information of the image processing device, which is performed by the paired mobile terminal, wherein the screen state information includes pan-tilt-zoom support information that includes information on whether pan, tilt, and zoom are possible and information about an area in a display where PTZ is performed;
• generating a menu screen on the basis of the received screen state information, which is performed by the paired mobile terminal;
• and
• receiving an input from a user through the menu screen and controlling a display of the image processing device according to a function of the menu screen selected by the user, which is performed by the paired mobile terminal.

A mobile terminal comprising:

• a receiver receiving screen state information transmitted by an image processing device;
• a menu screen generator generating a menu screen based on the screen state information;
• an input portion receiving an input from a user through the menu screen;
• and
• a remote controller controlling a display of the image processing device according to a function of the menu screen received through the menu screen and selected by a user,
• wherein the menu screen generator generates the menu screen based on the screen state information including at least one of screen state information of the image processing device, content information output to the display of the image processing device, real-time output state information of a content output to the display of the image processing device, screen split mode information of the image processing device, pan-tilt-zoom (PTZ) support information of a source terminal, audio output state information of the image processing device, time information, and recording state information.