Patent application number | Description | Published |
20120026204 | THREE-DIMENSIONAL DISPLAY AND DRIVING METHOD THEREOF - A three-dimensional (3D) display is disclosed. One aspect includes: a display unit including a plurality of pixels and a slit barrier selectively shielding light irradiated from the display unit. The display unit additionally includes a controller controlling the turn-on and turn-off of the slit barrier and generating a first back light compensation signal compensating the reduction of the luminance of the display unit when the slit barrier is turned off and a second back light compensation signal compensating the reduction of the luminance of the display when the slit barrier is turned on to compensate the luminance reduction by the slit barrier. According to at least one aspect of the 3D display using a slit barrier scheme, it is possible to minimize the deterioration of luminance by a slit barrier. | 02-02-2012 |
20120098848 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND FLAT PANEL DISPLAY DEVICE - An image processing device, an image processing method, and a flat panel display are disclosed. According to some aspects, the image processing device may include: an image determining unit for determining a kind of an input image as one of a moving picture, a photograph image, and a user interface image. A legibility improving unit may be configured to generate a legibility improved image by extracting specific pixels from pixels included in the input image according to the kind of the input image that is determined by the image determining unit and by modifying gray scale values of the extracted specific pixels. According to some aspects, an illuminance sensor for sensing external illuminance, and a brightness improving unit for correcting a gamma curve according to the external illuminance sensed by the illuminance sensor is provided. Brightness may be controlled according to a kind of an image and external illuminance so that an image processing device may increase outdoor visibility of an image by controlling brightness according to the kind of image and the external illuminance. | 04-26-2012 |
20120098849 | Display Device Capable of Controlling Viewing Angle and Driving Method Thereof - A viewing angle controllable display device and a driving method thereof. The viewing angle controllable display device includes: an image mixing unit generating a mixed image data signal by mixing an original image data signal, or a gray-adjusted original image data signal, with a protection image data signal that disturbs recognition of the original image; an output image selecting unit receiving the original image data signal or the mixed image data signal, and selecting an image data signal corresponding to an image output to a display panel; and a display panel receiving a data voltage corresponding to the image data signal selected and output from the output image selecting unit through a data drive to display an original image or a mixed image, responding to gate signals sequentially transmitted from a gate driver. | 04-26-2012 |
20130033517 | DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME - A display apparatus, which adjusts a luminance value of an image, and a method for driving the same are disclosed. The display apparatus includes a first image conversion unit that converts first image data into a plurality of second image data each including a luminance value, a luminance analysis unit that determines quantities of luminance values of the second image data, and determines a distribution of the luminance values, and a luminance adjustment unit that adjusts the respective luminance values of the second image data based on the quantities. | 02-07-2013 |
20130194494 | APPARATUS FOR PROCESSING IMAGE SIGNAL AND METHOD THEREOF - A video signal processing apparatus and a video signal processing method are provided. The video signal processing apparatus includes an image processing apparatus configured to receive and convert an external input image data signal into an output image data signal according to a color arrangement structure, wherein the image processing apparatus includes at least one current limiter to remap the external input image data signal with expanded number of bits. | 08-01-2013 |
20130208016 | DISPLAY APPARATUS AND DRIVING METHOD THEREOF - A display apparatus is disclosed. In one aspect the apparatus includes an encoder configured to encode a Nth first image data, where N is an integer of 2 or greater and a (N−1)th second image data at different rates. The display further includes a memory configured to store the encoded Nth first image data and the encoded (N−1)th second image data, a decoder configured to decode the encoded Nth first image data and the encoded (N−1)th second image data received from the memory and, an image processor configured to perform color processing on the decoded Nth first image data. It also includes an image converter configured to convert the Nth first image data received from the image processor into Nth second image data and an image quality enhancer configured to enhance image quality of the Nth second image data based on the decoded (N−1)th second image data. | 08-15-2013 |
20130278569 | IMAGE DISPLAY DEVICE AND DRIVING METHOD THEREOF - Disclosed is an image display device capable of reducing power consumption and improving display quality. The image display device includes pixels disposed at portions at which scanning lines and data lines intersect with each other; a scanning driving unit driving the scanning lines; a data driving unit driving the data lines; a driving frequency selecting unit generating a selecting signal including information on a driving frequency using data supplied from an external system; and a timing controlling unit controlling the scanning driving unit and the data driving unit using the driving frequency included in the selecting signal. | 10-24-2013 |
20140028700 | DEVICE AND METHOD FOR MAPPING COLOR GAMUT - A device for mapping a color gamut includes a color gamut determinator and a color gamut mapper. The color gamut determinator determines an output color gamut using a gain value corresponding to information of a first color gamut, information of a second color gamut and a control condition. The color gamut mapper converts the color gamut of an input image data into the output color gamut. Accordingly, it is possible to provide a device and method for mapping a color gamut, which can determine an optimal color gamut corresponding to a change in control condition, and accordingly improve color accuracy and color reproducibility. | 01-30-2014 |
20140063078 | METHOD OF CONTROLLING A DIMMING OPERATION, DIMMING OPERATION CONTROL DEVICE, AND FLAT PANEL DISPLAY DEVICE HAVING THE SAME - A method of controlling a dimming operation is disclosed. In one aspect, the method includes determining the brightness of an input image frame based on input image data, determining an input dimming value based on the brightness of the input image frame, selectively performing the dimming operation is based on a comparison of an absolute value of a difference between the input dimming value and a current output dimming value against a predetermined threshold value, where a value generated by adjusting the current output dimming value by a predetermined adjustment value is output as a next output dimming value when performing the dimming operation, and the input dimming value is output as the next output dimming value when not performing the dimming operation. | 03-06-2014 |
20140118426 | DISPLAY DEVICE, APPARATUS FOR COMPENSATING DEGRADATION AND METHOD THEREOF - A display device includes: a plurality of pixels; a degradation compensator for using a temperature weight value for a reference temperature, a luminance weight value for a reference luminance, and a material weight value for a reference material, for calculating a reference using time when a degradation rate of the pixels is changed to a reference degradation rate of a reference degradation curve, and for generating a control variable according to the reference using time; and a power supply for controlling a voltage difference between a first power source voltage for supplying a driving current to the pixels and a second power source voltage according to the control variable. | 05-01-2014 |
20140140616 | DEVICE FOR CONVERTING COLOR GAMUT AND METHOD THEREOF - A color gamut conversion device includes: a target color coordinate converter configured to convert each RGB value of red (R), green (G), blue (B), cyan (C), magenta (M), yellow (Y), and white (W) of a target color coordinate into a tristimulus value XYZ; a reference conversion matrix generator configured to generate a first reference conversion matrix for converting each tristimulus value XYZ into an R′G′B′ value according to a color gamut of a reference display; a low power corrected value calculator configured to calculate a low power corrected value for correcting the R′G′B′ value; a lookup table (LUT) generator configured to generate an LUT including an R″G″B″ value corresponding to each RGB value by using a second reference conversion matrix that the low power corrected value is applied to the first reference conversion matrix; and a color gamut converter configured to convert image data of the RGB values into image data of the R″G″B″ values using the LUT. | 05-22-2014 |
20140285533 | DISPLAY DEVICE, DATA PROCESSING DEVICE FOR THE SAME, AND METHOD THEREOF - A data processing device includes a gamma processor applying a gamma function to grayscale data including red grayscale data, green grayscale data, and blue grayscale data to generate luminance data including red luminance data, green luminance data, and blue luminance data, a first compensation coefficient generator generating a first compensation coefficient, a second compensation coefficient generator calculating a first grayscale ratio of the blue grayscale data and a second grayscale ratio of the red grayscale data, and generating a second compensation coefficient, a data compensation coefficient generator generating a data compensation coefficient by multiplying the first compensation coefficient and the second compensation coefficient, a data compensator generating compensation luminance data by adding the luminance data to a value of the data compensation coefficient multiplied by the luminance data, and an inverse processor generating compensation grayscale data. | 09-25-2014 |
20140292820 | IMAGE CONTROL DISPLAY DEVICE AND IMAGE CONTROL METHOD - An image control technology that enables low power consumption with less compromise in the overall quality of the image is disclosed, in which color information of an image is saved while minimizing degradation of picture quality, and improving text readability. In one aspect, an image control display device includes an image controller configured to measure at least one of luminance values and chroma values of pixels of an input image. In addition, the image controller is configured to detect an edge using the at least one of luminance and chroma values and is configured to invert color information of the input image into inverted image data. The image controller is further configured to generate output image data comprising an inverted region and an exception region, where the inverted region displays the inverted image data and the exception region displays uninverted input image data. The display device additionally includes a data driver configured to receive the output image data and to apply a plurality of data voltages corresponding to the output image data to a display panel. | 10-02-2014 |
20140300625 | DISPLAY DEVICE AND METHOD OF COMPENSATING COLORS OF THE DISPLAY DEVICE - Provided is a display device including: a display panel comprising a plurality of pixels, each of the plurality of pixels configured to display one of three primary colors; and a color compensator configured to receive color data comprising gradation data corresponding to each of the three primary colors and configured to increase chroma of a color in which the three primary colors are mixed, by compensating a color of the color data based on color ratios of the three primary colors. | 10-09-2014 |
20140306979 | APPARATUS FOR COMPENSATING COLOR CHARACTERISTICS IN DISPLAY DEVICE AND COMPENSATING METHOD THEREOF - An apparatus and method for compensating color characteristics in individual display devices that each include a display unit including a plurality of pixels to display images according to compensated image data signals, a test data input section to transmit a predetermined test image data signal to the pixels to display a test image, a luminance measuring unit to receive luminance information from the display unit displaying the test image and determine actual luminance ratios of a first color, a second color, and a third color from the received luminance information, a compensation ratio determiner to calculate a compensation ratio from both the actual and reference luminance ratios of each color and a data compensator to generate the compensated image data signals by adjusting external input video signals according to the compensation ratio. | 10-16-2014 |
20150054864 | COLOR COMPENSATION DEVICE AND DISPLAY DEVICE USING THE SAME, AND COLOR COMPENSATION METHOD - A color compensation method is disclosed. In one aspect, the method includes predetermining target color coordinates, measuring luminance and chromaticity from an image displayed on a display panel, and calculating compensation color coordinates by using the target color coordinates and the device color coordinates. The method also includes generating compensation data by using the target color coordinates, the device color coordinates, and the compensation color coordinates, receiving an external video signal, and converting the RGB data of the external video signal into the RGB data of the compensation color coordinates by using the compensation data corresponding to the RGB data of the external video signal. The compensation color coordinates are determined according to the values of the target color coordinates and the device color coordinates. | 02-26-2015 |