Plasma display apparatus and method for processing image thereof

A method for processing images in a plasma display apparatus comprising;

• (a) A gray level signal division step of dividing a signal gray level signal input for one frame into a first gray level signal and a second gray level signal;
• (b) A high pass filtering step of filtering the first gray level signal in high frequency bandwidth;
• and
• (c) A low pass filtering step of filtering the second gray level signal in low frequency bandwidth.

A plasma display apparatus comprising,

• a gray level signal divider dividing a gray level signal input for one frame into a first gray level signal and a second gray level signal;
• a frame memory part storing the first gray level signal and the second gray level signal based on frame unit;
• a high pass filter filtering the first gray level signal of the present frame through high frequency bandwidth;
• an average signal generator converting the second gray level signal of the present (N) frame and a next (N+1) frame to generate an average signal;
• and
• a low pass filter filtering the average signal in low frequency bandwidth.

A method for processing images with the plasma display apparatus comprising;

• (a) a gray level signal dividing step of dividing a gray level signal input for one frame into a first gray level signal and a second gray level signal;
• (b) a frame memory step of storing the first gray signal and the second gray level signal based on a frame unit;
• (c) a high pass filtering step of filtering the first gray level signal of the present frame through high frequency bandwidth;
• (d) an average signal generating step of converting the second gray level signal of the present (N) frame and a next (N+1) frame to generate an average signal;
• and
• (e) a low pass filtering step of filtering the average signal through low frequency bandwidth.

A plasma display apparatus comprising,

• a gray level signal divider dividing a gray level signal input for one frame into a first gray level signal and a second gray level signal;
• a frame memory part storing the first gray level signal and the second gray level signal based on a frame unit;
• a high pass filter filtering the first gray level signal of the present frame in high frequency bandwidth;
• an average signal generator converting the second gray level signal of the present (N) frame and a next (N+1) frame to generate an average signal;
• a low pass filter filtering the average signal in low frequency bandwidth;
• a Y signal convertor converting the second gray level signal into R (Red), G (Green) and B (Blue) luminance signal of the present frame and the next frame;
• a gray level signal selector selecting the second gray level signal of the present frame and the next frame according to the difference of the gray level values between the present frame and the next frame of the luminance signal input from the Y signal converting part;
• a noise removing part removing the noise of the selected gray level signal;
• and
• a selector adding the gray level signal from which noise is removed to any one gray level signal among the first gray level signal of the present frame after the division, the second gray level signal of the present frame and the second gray level signal of the next frame.

A method for processing image with plasma display apparatus comprising;

• (a) a gray level signal dividing step of dividing a gray level signal input for one frame into a first gray level signal and a second gray level signal;
• (b) a frame memory step of storing the first gray level signal and the second gray level signal in a frame unit;
• (c) a high pass filter step of filtering the first gray level signal of the present frame through high frequency bandwidth;
• (d) an average signal generating step of converting the second gray level signal of the present (N) frame and a next (N+1) frame to generate an average signal;
• (e) a low pass filter step of filtering the average signal through low frequency bandwidth;
• (f) a Y signal converting step of converting the second gray level signal into R (Red), G (Green) and B (Blue) luminance signal of the present frame and the next frame;
• (g) a gray level signal selecting step of selecting the second gray level signal of the present frame and the next frame depending on the difference of the gray level values between the present frame and the next frame of the luminance signal input from the Y signal converting part;
• (h) a noise removing step of removing the noise of the selected gray level signal;
• and
• (i) a selecting step of adding the gray level signal from which to remove noise to any one gray level signal among the first gray level signal of the present frame after the division, the second gray level signal of the present frame and the second gray level signal of the next frame.