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| Number | Title | Issue Date |
| 8179401 | Reducing image artifacts in a color sequential display system Methods, systems, and apparatus, including computer program products, for reducing artifacts in a color sequential display system. A frame of a digital image is displayed by receiving frame data, determining dither patterns, applying the dither patterns to the data,... | 05/15/2012 |
| 7973801 | Method and device for processing video data for display on a display device A method for processing video data for display on a display device having a plurality of luminous elements comprising: applying a dithering function based on single ones of said luminous elements to at least part of said video data to refine the grey scale portrayal... | 07/05/2011 |
| 7940281 | Dithering method and related dithering module and liquid crystal display (LCD) A dithering method includes: utilizing a plurality of large dithering masks to perform dithering on a first set of Least Significant Bits (LSBs) of M-bit video data, utilizing a plurality of small dithering masks to perform dithering on a second set of LSBs of the M... | 05/10/2011 |
| 7903123 | System for programmable dithering of video data A programmable system for dithering video data. The system is operable in at least two user-selectable modes which can include a small kernel mode and a large kernel mode. In some embodiments, the system is operable in at least one mode in which it applies two or mo... | 03/08/2011 |
| 7864191 | Techniques for efficient dithering A system comprising a storage including an image file associated with a plurality of pixels and processing logic coupled to the storage. The processing logic is adapted to determine an average of least significant bits associated with a maximum of two of the plurali... | 01/04/2011 |
| 7864192 | Dithering system and method for use in image processing A dithering system includes a linear transformer, a dither data generator, an adder and a shifter. The transformer linearly transforms M bit input data using a linear function having a predetermined gradient in order to generate and output M bit transform data. The ... | 01/04/2011 |
| 7755638 | Tinted edge enhancement using look-up table edge pixel identification The present application is a method of producing digital image objects with enhanced halftone edges. The method operates by selecting a target pixel location within the digital image; observing a set of pixels within a pixel observation window superimposed on the di... | 07/13/2010 |
| 7692665 | Methods and systems for adaptive dither pattern application Embodiments of the present invention comprise methods and systems for adaptive dither pattern array generation and application. ... | 04/06/2010 |
| 7609277 | Method and apparatus for spatial and temporal dithering An apparatus and method for spatially and temporally dithering pixels. A pixel comprising at least one color component of a first size is provided. A dither addend is determined based on the display position of the pixel. The dither addend is added to the color comp... | 10/27/2009 |
| 7580044 | Method and apparatus for non-linear dithering of images A method for dithering an image is disclosed, which includes: storing a plurality of dithering parameters corresponding to a predetermined function for a predetermined input intensity range; and dithering pixels of the predetermined input intensity range according t... | 08/25/2009 |
| 7554555 | Methods and systems for adaptive dither pattern processing Embodiments of the present invention comprise methods and systems for adaptive dither pattern array generation and application. ... | 06/30/2009 |
| 7483039 | System for programmable dithering of video data A programmable system for dithering video data. The system is operable in at least two user-selectable modes which can include a small kernel mode and a large kernel mode. In some embodiments, the system is operable in at least one mode in which it applies two or mo... | 01/27/2009 |
| 7474316 | Bit-depth extension of digital displays via the use of models of the impulse response of the visual system A dithering pattern that is generated based on a spatial operation is used for a Bit-Depth Extension (BDE) technique for preventing contouring artifacts in an image displayed by a display having a bit-depth that-is less than the bit-depth of the image. The dithering... | 01/06/2009 |
| 7453468 | Intelligent color to texture converter A method for preserving color information in a black and white version of a color image includes the analysis of the color image. The analysis comprises a search for conflicting colors. Conflicting colors are colors that are normally transformed to the same gray lev... | 11/18/2008 |
| 7453469 | Slow dither display Embodiments of the invention provide an image display mode for displays, such as a television, that do not use the entire display field for displaying an image. A user selectable modification of the image display is provided, where the image may be stepped a predefi... | 11/18/2008 |
| 7443581 | Adjustable optical characteristic Embodiments of adjusting an optical characteristic are disclosed. ... | 10/28/2008 |
| 7420570 | Methods and systems for video processing using super dithering A super dithering method of color video quantization maintains the perceived video quality on a display with less bit depth of color than the input video. Super dithering relies on both the spatial and temporal properties of human visual system, wherein spatial dith... | 09/02/2008 |
| 7420571 | Method for processing a gray level in a plasma display panel and apparatus using the same A system and method for processing a gray level in a display device performs a random error diffusion operation on the video data using a first random coefficient value and a random dithering operation on the error-diffused video data using a second random coefficie... | 09/02/2008 |
| 7386186 | Apparatus and method for processing images A method and apparatus for processing an image. Specifically, one exemplary embodiment of the method comprises inputting an image into a pixel array producing pixel output signals, executing an image edge detection routine on the pixel output signals that detects pi... | 06/10/2008 |
| 7386185 | Image processing device and image processing method An image processing apparatus for automatically improving the contrast of an input image that is obtained from a digital camera or the like, and obtaining a sharper and clearing image. A contrast improvement unit (11) performs a contrast improvement process o... | 06/10/2008 |
| 7379624 | Image processing method and apparatus An image processing method includes the steps of performing resolution conversion processing on input image data to increase the number of grayscale levels, performing edge enhancement processing to increase the number of grayscale levels of the input image data, an... | 05/27/2008 |
| 7379072 | Method for determining weighting factors for the color calculation of a color value of texels for a footprint In a method for determining weighting factors for the color calculation of a color value of texels for a footprint covering a plurality of texels in a texel grid, in a graphic system, form information of the footprint is determined at first. Afterwards, the edges of... | 05/27/2008 |
| 7370929 | Printer, dither matrix generation method, and recording medium A printer has a head where outlets are arranged in a width direction perpendicular to a predetermined scan direction, and a printing paper moves under the head in the scan direction. In a basic dither matrix which is an array where element values are arranged in a c... | 05/13/2008 |
| 7369277 | Image processing apparatus, drawing processing method, and computer program A drawing instruction processor refers to a bit map line table that shows whether the bit arrays in the row unit are the same in the order of concentrations. The drawing instruction processor decides whether dither patterns to be used for the adjacent specified draw... | 05/06/2008 |
| 7369276 | Multi-level halftoning providing improved texture uniformity A method for multi-level halftoning an input digital image to form an output digital image which includes a multi-level error diffusion halftoning process incorporating periodic dither signals whose amplitudes are adjusted as a function of the error-diffusion textur... | 05/06/2008 |
| 7365711 | Driving apparatus of plasma display panel and method for displaying pictures on plasma display panel A plasma display panel (PDP) driving apparatus and a method for displaying pictures on the PDP increases the ability to express low gray scales without increasing the number of sub-fields. Input picture signal data are delayed by one frame and the number of high-ord... | 04/29/2008 |
| 7365883 | Dither matrix design using sub-pixel addressability A method of generating a dither matrix for an output device having sub-pixel addressability that permits the attenuation of tone for less than whole pixels. An original representative pixel grid is expanded to a super-resolution by replication of the pixel grid in b... | 04/29/2008 |
| 7362325 | 2D/3D line rendering using 3D rasterization algorithms This patent discloses a system and method to compile a set of display points that define a two dimensional representation of a straight line graphic object using three dimensional rasterization algorithms. In one embodiment, a three dimensional (3D) graphics acceler... | 04/22/2008 |
| 7355570 | Method of expressing gray level of high load image and plasma display panel driving apparatus using the method In a method of expressing a gray level of a high load image and an apparatus for driving a Plasma Display Panel (PDP) using the method, a load ratio of the input image signal is calculated, and an error diffusion of a lower bit of gray level data corresponding to th... | 04/08/2008 |
| 7352373 | Systems and methods for multi-dimensional dither structure creation and application Embodiments of the present invention comprise systems and methods for creation, modification and implementation of dither pattern structures. ... | 04/01/2008 |
| 7352375 | Driving method of light emitting device A method of driving a light emitting device in which a plurality of pixels having a light emitting element are formed, characterized by including: setting j display periods (where j is a natural number) to appear in one frame period, each of the j display periods co... | 04/01/2008 |
| 7348991 | Video/graphics text mode enhancement method for digitally processed data A text enhancement unit is introduced in order to alleviate the degradation of text characters on computer or television displays. The text enhancement unit uses an enhancement process to regain uniformity and intensity that may be lost during image processing. The ... | 03/25/2008 |
| 7336275 | Pseudo random number generator and method A pseudo random number generator that generates a plurality of intermediate values, where each successive intermediate value is based, at least in part, on one of the succeeding intermediate values, where a final value based on a subset of the plurality of intermedi... | 02/26/2008 |
| 7333656 | Image processing method and image processing apparatus An image processing method comprises forming a histogram of an entire image, determining a ratio between a reference luminance value and a reference threshold value at a maximum frequency, dividing the image into local areas, forming a histogram of each local area, ... | 02/19/2008 |
| 7330193 | Low noise dithering and color palette designs Methods for choosing and combining colors from a color palette to render an image color tone are disclosed. A set of up to four palette colors are chosen and the weighted factors for combining the chosen palette to render the image color are determined. The weighted... | 02/12/2008 |
| 7330291 | Dither mask creating method and creating device In a computer generation of a dither mask for conversion of a continuous-tone image into a halftone image, a pixel array having a size in accordance with the dither mask is partitioned into blocks. Initial pixel values are determined such that the occurrences of pix... | 02/12/2008 |
| 7330191 | System for secure text display Techniques for securely displaying text on a display panel involve destroying spatial and temporal correlations in an otherwise uniform visual field. The techniques render the displayed text secure with respect to attempts to copy the text using a video capture devi... | 02/12/2008 |
| 7327355 | LCD monitor with dual interface and control method thereof An LCD monitor with a dual interface, having a DVI-I connector through which digital and analog video signals from a computer main body are input, and digital and analog display modes according to the type of the input video signal. The monitor includes a signal sen... | 02/05/2008 |
| 7327373 | 3D dither algorithm A four-time resolution refinement of 3D-dither algorithm is provided in this present invention. A 4×2 pixel-block is treated as an observed unit in this present invention, which includes two 2×2 pixel-blocks. In order to eliminate moving lines and dithered edges, ... | 02/05/2008 |
| 7327340 | Liquid-crystal driving circuit and method A liquid-crystal driving circuit has an image data processor that, for example, encodes the present image, decodes the encoded image, delays the encoded image by one frame interval, decodes the delayed encoded image, and uses the two decoded images to generate compe... | 02/05/2008 |
