摘要:
Discloses herein is a method and apparatus for processing video data of a display device in which dithering noise generating when a motion picture is displayed can be minimized. According to the present invention, the method of processing the video data of the display device includes the steps of comparing data of an ith frame (i is a natural number) and data of a (i+1)th frame to determine whether the data of the (i+1)th frame is a motion picture or a still image, and employing a different dithering method depending upon the determination result of the motion picture or the still image.
摘要:
Disclosed herein are method and apparatus for processing the gray level in which error diffusion noise can be minimized while enhancing the power of gray level representation. According to an embodiment of the present invention, the method includes the steps of performing a random error diffusion operation on the video data, and performing a dithering operation on the error-diffused video data. According to another embodiment of the present invention, the method includes the steps of performing a random error diffusion operation on the video data using a first random coefficient value, and performing a random dithering operation on the error-diffused video data using a second random coefficient value. According to still another embodiment of the present invention, the method includes the steps of performing a random error diffusion operation on video data of a corresponding pixel using error conversion coefficients and a random error diffusion coefficient each calculated from pixels adjacent to the corresponding pixel, and performing a dithering operation on the random error-diffused video data using a plurality of dither mask patterns which are divided on a per gray level basis and on a per frame basis.
摘要:
Method for driving a plasma display panel, wherein an address reinforcement period is added between an address period and a sustain period, and a scan voltage Vw of positive polarity and a third DC voltage Zdc3 are applied, for inducing floating charges in discharge cells, whereby preventing erratic discharge caused by the floating charges at a high temperature.
摘要:
The present invention relates to a plasma display apparatus and driving method thereof, and more particularly, to a plasma display apparatus implementing gray levels and driving method thereof. The plasma display apparatus according to the present invention comprises a plasma display panel in which a plurality of scan electrodes and a plurality of sustain electrodes are formed on a substrate, drivers for driving the plurality of the scan electrodes and the sustain electrodes, and a sustain pulse controller for controlling the drivers to set a total number of sustain pulses applied to the scan electrodes and the sustain electrodes to be at least one or more of a plurality of sub-fields in which a sub-field having an odd number constitutes one frame. The present invention can implement a finer gray level. Accordingly, half-tone noise when implementing a low gray level can be reduced and the picture quality can be improved.
摘要:
A plasma display apparatus and a method of driving the same, more particularly to, a plasma display apparatus considering the gray level values of sub-fields and a method of driving the same are provided. The plasma display apparatus controls the magnitudes of reset pulses or the widths of scan pulses in units of sub-fields thereby improving contrast, preventing driving margins from deteriorating, stabilizing discharges and improving. brightness.
摘要:
A plasma display panel (PDP) driving apparatus, a signal processing method for PDP and an image display apparatus for PDP are disclosed, wherein a load effect caused by a shape of an image displayed on the PDP in displaying image corresponding to inputted image data on the PDP to thereby enable to display an even picture quality regardless of the shape of the image. In order to accomplish this object, the PDP driving apparatus reflects a ratio between a horizontal component load and a vertical component load and an entire load as well to thereby compensate the number of sustain pulses of subfield mapping data.
摘要:
The present invention relates to a plasma display apparatus and, more particularly, to a plasma display apparatus in which the ability to represent gray levels can be improved and halftone noise can be reduced by improving a plasma display apparatus and image processing method thereof. According to the present invention, the plasma display apparatus includes a motion detection unit that detects motion information of input image signal data, and a halftoning unit that halftones the image signal data by using at least one or more of a dithering method and an error diffusion method according to the motion information received from the motion detection unit.
摘要:
Disclosed herein is a method and apparatus for driving a plasma display panel in which signal distortion can be minimized while reducing contour noise. According to the present invention, the method of driving the plasma display panel includes the steps of performing a first inverse gamma correction operation on externally inputted video data, performing a confined error diffusion operation on the first inverse gamma corrected video data within a range of a dither mask pattern of an upper gray scale, dithering the confined error diffused video data by using a plurality of dither mask patterns which are separated every gray scale and every frame, performing a second inverse gamma correction operation on the dithered video data, and mapping the second inverse gamma corrected video data to a sub-field pattern in which one frame includes one or more selective writing sub-fields and one or more selective erasing sub-fields.