Image displayer having function of automatically eliminating afterimage and a method thereof

An image displayer comprising:

• a display;
• a processor for processing signals to be displayed on the display;
• a sensor for detecting a presence or a non-presence of a user within a predetermined range from the display when a still picture is output from the processor and displayed on the display beyond a pre-set time period;
• and
• a controller unit for controlling the processor to display an afterimage-eliminating picture to eliminate an afterimage due to the still picture on the display when the sensor detects the non-presence of a user,
• wherein if the sensor detects the presence of the user, the processor displays an on-screen display to allow the user to select whether to perform an afterimage-eliminating function.

An afterimage-eliminating method of an image displayer having a function of automatically eliminating an afterimage, the method comprising the steps of:

• processing signals inputted from an external device and outputting video signals to a display;
• sequentially comparing the video signals as outputted by each frame, thereby detecting a still picture in which identical video signals are inputted beyond a pre-set time;
• detecting whether there exists a user within a predetermined range from the display when the still picture is detected in the still image detecting step;
• and
• displaying on the display an afterimage-eliminating picture eliminating an afterimage caused, due to the still picture when it is detected that no user exists within the predetermined range,
• wherein the step of displaying the afterimage-eliminating picture on the display further comprises a step of outputting a pre-set On-Screen Display (OSD) information on receipt of a signal indicating that there exists the user within the predetermined range, thereby allowing the user to select whether to perform an afterimage-eliminating function.

An afterimage-eliminating method of an image displayer comprising:

• processing input signals to be displayed on a display;
• sequentially comparing the input signals;
• detecting a still picture when the respective, sequentially compared input signals are identical beyond a preset time period;
• detecting whether a user is within a predetermined range from the display when the still picture is detected;
• and
• displaying on the display an afterimage-eliminating picture for eliminating an afterimage due to the detected still picture when no user is detected,
• wherein the step of displaying the afterimage-eliminating picture on the display comprises a step of outputting a pre-set On-Screen Display (OSD) information if the user is detected to be within the predetermined range, thereby allowing the user to select whether to perform an afterimage-eliminating function.