Matches 301 - 323 out of 323 < 1 2 3 4 5 6 7


Match Document Document Title
5235435 Method of producing halftone images  
An improved method is described for producing halftone images with halftone cell dimensions and orientation to match a desired screen grid by choosing reference halftone gray values for each pixel...
5216753 Halftone compression with sharpness preservation  
Method and apparatus for compressing and enhancing gray-level, halftone, image data in copiers and printers. The input data is digitally halftoned to provide input halftone cells containing a...
5201030 Method and apparatus for dithering graphic images  
The distance between the intensity value of the base value (that is, the closest quantized intensity value less than the input intensity value) and the input intensity value is adjusted according...
5179640 Generating repeating patterns from a pattern header  
A set of pattern headers is used to replicate repeating patterns used in digitally-simulated halftone screens. The use of pattern headers is suited to digital processing systems which are most...
5179641 Rendering shaded areas with boundary-localized pseudo-random noise  
A computer graphics technique for rendering shaded areas by using pseudo-random noise localized to image boundaries is disclosed. Calculated pixel values are initially generated using an...
5164717 Method and apparatus for the dithering of antialiased vectors  
In the method and apparatus of the present invention, dithered images are composited with separately rendered undithered images. The dithered image is first transformed back to its unquantized...
5162785 Method and devices for optimizing the contrast and the angle of view of a liquid crystal display  
A method is provided for optimizing the contrast and the angle of view of a liquid crystal display, this method consisting in periodically energizing a given zone of the display, permanently...
5153576 Mapping of color images to black-and-white textured images  
Mapping an image comprised of a plurality of pixels from color to black-and-white includes determining, on a pixel-by-pixel basis, the amount of a plurality of color components in a color image....
5111243 Apparatus and method for adjusting image contrast on a display device  
An apparatus for adjusting the image contrast of a display device, which includes a memory storing first data representing a predetermined image contrast, a driver for driving the display device,...
5111194 Artificial halftone processing apparatus  
An artificial halftone processing apparatus for binarizing input image information on the basis of the densities of pixels and combining a plurality of sets of resultant binary data to produce...
5089812 Liquid-crystal display  
A liquid-crystal display includes common electrodes and segment electrodes and responds to signals applied to the common electrodes and the segment electrodes, to display an image. A display...
5062001 Gray scale system for visual displays  
An image is projected in gray scale on a large screen without any flicker, the different colors or shades being indicated on the screen by individual shades of gray. The image is defined by a...
5016191 Half toning pixel processor  
A pixel processor converts data indicating origin, direction, length and intensity of each of a set of lines forming a picture into a half tone bit map on the picture. The pixel processor...
4857909 Image display apparatus  
An image display apparatus includes a conversion circuit which makes 1-bit information in display memory correspondence to a plurality of dot data on the display screen, so that more sophisticated...
4851825 Grayscale character generator and method  
A method and system for efficiently generating grayscale character fonts from bi-level master character fonts decomposed into rectangles. For each filter array to be used for converting master...
4789854 Color video display apparatus  
A color video display apparatus displays a first image represented by luminance and color difference data stored in a VRAM and a second image represented by color codes stored in the same VRAM on...
4755954 Intensity level windowing system for image displays  
A windowing system for use when using data to form video display images. The digital data is operated on by a transfer function delineated by predefined parameters or by newly generated parameters...
4703318 Character-based monochromatic representation of color images  
Forming a character-based monochromatic image from a digital representation of a color image by (1) forming a character-based representation of the color image in which a plurality of color...
4648045 High speed memory and processor system for raster display  
Disclosed is a high speed memory system having a parallel architecture which is particularly advantageous in controlling a multiline raster scanned display. Data for a plurality of scan lines is...
4591844 Line smoothing for a raster display  
This invention relates to a method of and apparatus for displaying a symbol on a display surface consisting of a matrix of discrete points (e.g. raster), where the symbol is divided into sections...
4044332 Halftone display, particularly for a high resolution radioactivity distribution detection system  
A device for presenting a halftone pictorial presentation composed of dot picture elements by selectively controlling the number of dot picture elements per unit area at locations on a display. In...
3961134 Bi-level display system  
Continuous tone images are displayed on a bi-level display device by establishing thresholds for each display element and actuating a particular element when its intensity φ bears a predetermine...
3590156 FLAT PANEL DISPLAY SYSTEM WITH TIME-MODULATED GRAY SCALE  
A picture display system using a flat panel image display device and a separate memory system for generating quantized video signals to control the display panel. A switching system is provided...

Matches 301 - 323 out of 323 < 1 2 3 4 5 6 7