Patent application number | Description | Published |
20080204603 | VIDEO DISPLAYING APPARATUS AND VIDEO DISPLAYING METHOD - A video displaying apparatus, for suppressing a blur of moving picture, or dynamic false contour, from generation thereof, comprises: an input unit for inputting a motion picture; a motion vector detection unit for detecting a motion vector starting from a pixel of one (1) field and ending at a pixel of other one (1) field, among a plural number of fields included in the motion pictures, which are inputted into said input unit, or fields, which are produced from said plural number of fields; a sub-field conversion unit for converting the motion pictures, which are inputted to said input unit, into light-emission data for sub-fields; a sub-field reconstruction unit for reconstructing the light-emission data for sub-fields, which is outputted from said sub-field conversion unit, through a calculating process with using the motion vector, which is detected by said motion vector detection unit; and a display unit for displaying the picture with using the light-emission data, which is outputted from said sub-field reconstruction unit, wherein the sub-field reconstruction unit selects the motion vector ending at a reconstruction target pixel of said other one (1) field, among the motion vectors detected by the motion vector detection unit, and calculates a position vector, by multiplying a predetermined function onto this, and thereby reconstructing the light-emission data for one (1) sub-field of the reconstruction target pixel, with using the light-emission data for sub-fields corresponding to the one (1) sub-fields within the pixel, which is indicated by the position vector. | 08-28-2008 |
20080316148 | PLASMA DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A technique capable of suppressing or preventing generation of flickers (blinks) by a sustain period control as well as capable of ensuring or enhancing display quality in a PDP device. The PDP device adjusts a sustain pulse of the sustain period for every subfield by selecting a combination of one or more than one cycle so that start and end timings of a field in fields before and after change are almost the same according to a display load ratio of the subfield of the field. Field weighted emission center positions then becomes almost the same, and flickers and the like are suppressed. | 12-25-2008 |
20090002279 | Plasma display device and control method thereof - A plasma display device is provided which expresses a video with gradations by selecting each of a plurality of subfields forming one field, each of the subfields having a weighted number of sustain pulses. A sustain pulse number calculation unit calculates a display load factor of an input video signal and calculates a total number of sustain pulses of one field according to the display load factor. A gradation number selection unit selects a gradation number being a sum of weights of all of the subfields according to the calculated total number of sustain pulses. | 01-01-2009 |
20090153441 | Plasma Display Device - A plasma display device is provided which includes: drive circuits which supply, to display electrodes, progressive scan pulses for performing display on display lines of a plasma display panel based on respective display data, or simultaneous scan pulses for performing display based on the same display data with one even-numbered display line and one odd-numbered display line vertically adjacent to each other of the plasma display panel taken as a set, in each sub-frame of a plurality of weighted sub-frames in one frame; a motion detection circuit which detects a motion of an image based on an image signal; and a sub-frame number decision circuit which decides the number of sub-frames in which the simultaneous scan pulses are supplied in the one frame, according to the motion of the image. | 06-18-2009 |
20090179828 | PLASMA DISPLAY DEVICE - There is provided a plasma display device capable of preventing a moving picture pseudo contour and blurring of a moving picture. The plasma display device includes a plasma display panel in which one display line is formed of a display electrode pair composed of two display electrodes and the display electrode pair on an even display line and the display electrode pair on an odd display line are alternately arranged, the driving circuits supplying voltage to the display electrodes to perform display based on the same display data with one even display line and one odd display line adjacent up and down paired in the plasma display panel, the motion detecting circuit detecting motion in an image based on the image signal and ratio determining circuits determining the ratio of the number of sustain pulses on the even display line to the number of sustain pulses on the odd display line forming the pair. | 07-16-2009 |
20100141562 | PLASMA DISPLAY DEVICE - A plasma display device expressing a video is provided. A memory stores selection patterns being combinations of subfields lighting for expressing gradation values constituting gradation numbers. The selection patterns corresponding to gradation values constituting a first gradation number and selection patterns corresponding to gradation values constituting a second gradation number are stored in the memory while being partially shared with each other. | 06-10-2010 |
20100141563 | PLASMA DISPLAY DEVICE AND CONTROL METHOD THEREOF - A plasma display device and display method are provided. The plasma display device expresses a video with gradations by controlling lighting of subfields forming one field, each of the subfields having a weighted luminance. A load factor calculation unit calculates a display load factor of an input video signal. A sustain pulse number change and control unit changes and controls a total number of sustain pulses of one field according to the display load factor. A gradation number conversion processing unit selects a gradation number expressed by the plasma display device according to the total number of sustain pulses and converts the input video signal into a display video signal of the selected gradation number. An error diffusion processing unit spatially diffuses a value corresponding to a decimal fraction when the gradation value of the display video signal in the selected gradation number has the value corresponding to the decimal fraction. | 06-10-2010 |
20100141674 | DISPLAY DEVICE - The disclosed invention provides a display device for performing a gradation display, using a plurality of subframes of image into which one frame of image is divided, and a display method that reduces dynamic false contour noises occurring when the image is displayed and is suitable for plasma display panels and the like. Dynamic false contour noise reduction is performed by detecting luminance on/off state change (carry up/carry down) in a region where a smooth tone level change occurs and interchanging the tone values of pixels in the region. The reduction processing is controlled, based on an amount of motion of an original image and a display load ratio, so that dynamic false contour noise reduction is performed favorably. By carrying out different ways of processing for each frame, noise reduction in the time domain is performed. | 06-10-2010 |
20100182304 | MATRIX DISPLAY DEVICE - A matrix display device has first and second discharge sustaining electrode drive circuits that perform power recovery for the capacitance load through an LC resonance circuit using an inductor. During a luminescence emission period, a discharge is effected for display by applying an alternating voltage between each of plural first discharge sustaining electrodes and each of plural second discharge sustaining electrodes with a capacitance load corresponding to each display pixel. In the address scanning operation, the scan drive circuit selects the first discharge sustaining electrode per line, and in the discharge sustaining operation, the scan drive circuit provides a function for recovering power on the first discharge sustaining electrode. This is intended to decrease loss in the power recovery operation. | 07-22-2010 |