"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 5327159 | Packed bus selection of multiple pixel depths in palette devices, systems and methods A palette device controllable by a digital computer with a video memory having a bus for supplying multiple color codes for the palette device in each bus cycle. The palette device includes a multiple-bit input for entry of the color codes from the bus, a... | 07/05/1994 |
| 5317678 | Method for changing color of displayed images by use of color components In order to accomplish a color adjustment capable of determining a color at a high degree of freedom, a variety of color expressions and corresponding input instructions are correlated to reflect the instruction of a color change by a certain expression u... | 05/31/1994 |
| 5309551 | Devices, systems and methods for palette pass-through mode A palette device for use with a digital computer that produces a video control signal and color code signals for a first bus and where the digital computer has a graphics coprocessor that produces a video control signal and color code signals for a second... | 05/03/1994 |
| 5309552 | Programmable multi-format display controller A programmable display controller allows reconfiguration of bit plane memory and video output connections based upon the type of display device employed. The display controller allows for the definition of multiple bit planes when the display device suppo... | 05/03/1994 |
| 5289565 | Methods and apparatus for CYMK-RGB RAMDAC A thirty-two bit frame buffer provides real time conversion of CYMK color data to RGB color data for display on a video monitor. The frame buffer operates at a video rate of 100 mHz and includes pipelined arithmetic using look up tables for some of the CY... | 02/22/1994 |
| 5283554 | Mode switching system for a pixel based display unit In a pixel display system, a plug-to-plug compatible pixel decoder palette is provided which is responsive to a predetermined sequence of commands on an I/O data channel to switch the mode of operation of the pixel decoder palette. The pixel coder palette... | 02/01/1994 |
| 5262944 | Method for use of color and selective highlighting to indicate patient critical events in a centralized patient monitoring system A centralized patient monitoring system includes a central station which receives patient information from bedside monitors. The patient information is presented on a video display screen and may include patient demographic information, physiological para... | 11/16/1993 |
| 5250928 | Graphics decoder A graphics decoder which stores color number data of each pixel of the display screen, which is acquired from a subcode signal, sequentially reads out the color number data to produce a graphics RGB signal referring to a color look-up table, and supplies ... | 10/05/1993 |
| 5235677 | Raster graphics color palette architecture for multiple display objects A raster graphics color palette architecture for multiple display objects or sprites includes a first memory for storing pen index information for each display object. The pen index information for each display object includes pen index information corres... | 08/10/1993 |
| 5228120 | Display system with direct color mode A display system having a display memory, a palette and a digital-to-analogue converter stage is able to support both an indirect color mode and a direct color mode. In the indirect color mode. pixel data from the display memory is used to access chromina... | 07/13/1993 |
| 5204665 | Color editing with simple encoded images In an original image in red, green, blue color space (RGB) defined by a large number of colors, color variety of the original image is accomplished by displaying a reduced representative color set. The reduced representative color set is produced by initi... | 04/20/1993 |
| 5191406 | Method and apparatus for rapid scanning of color images A scanner system digitizes 35 mm transparencies or negatives, and converts the image to a format compatible with popular microcomputer systems. This scanner system can accommodate various formats, and has variable zoom, pan and window size. Color separati... | 03/02/1993 |
| 5181014 | Method and apparatus for representing three-dimensional color data in a one-dimensional reference system A method and apparatus are disclosed for representing and displaying the true (actual) color of an image in an index color system. The user specifies the number of color levels necessary to represent the range of displayable colors, and specifies the colo... | 01/19/1993 |
| 5142273 | System for generating color blended video signal A symbol generator that provides a video color signal that presents different colors for different portions of a symbol is illustrated herein. The symbol generator includes a number of separate stages that are connected in series to provide a processing p... | 08/25/1992 |
| 5128658 | Pixel data formatting Pixel formats and a pixel mapping unit for use in a computer graphics terminal which provides an address input to a color look-up table. The disclosed pixel formats can be used to conserve frame buffer memory, color table memory, or both. For example, the... | 07/07/1992 |
| 5122783 | System and method for blinking digitally-commanded pixels of a display screen to produce a palette of many colors A frame rate duty cycle technique and dithering technique is applied to the output of a color look-up RAM in order to drive various flat panel displays. An integrated circuit chip in accordance with the invention includes a modulo-N gray scaling unit, whe... | 06/16/1992 |
| 5103217 | Electronic image processing Electronic image processing for manipulating data representing a three dimensional object. The three dimensional object. The three dimensional position and color of surface elements of an object are stored wherein the data for each surface element represe... | 04/07/1992 |
| 5103407 | Apparatus and method for color selection Apparatus and method for color selection comprising apparatus defining a color display and selection space including a first area in which colors of a range of different hues are displayed at substantially predetermined levels of luminance and saturation ... | 04/07/1992 |
| 5060055 | Color display circuit A color display circuit is disclosed which comprises: a video signal input section for receiving color information data, intensity information data, and vertical and horizontal synchronizing signals; a color mode selecting section for selectively outputti... | 10/22/1991 |
| 5051929 | Electronic memory state reallocation system for improving the resolution of color coding video systems The present invention provides means and methods for generating high resolution color computer generated graphic elements, such as lines, circles and curves, using a modified color-under coding system. A portion of the original luminance grey scale is rea... | 09/24/1991 |
| 5008838 | Method for simultaneous initialization of a double buffer and a frame buffer A method is provided for generating pixel color information for use in producing an image of a line segment on a graphics display screen, the method comprising the steps of: denoting at least one planar region of the display screen that encompasses the li... | 04/16/1991 |
| 5003247 | Measuring device with variable color background A measuring device includes a display which is comprised of a plurality of adjacent display elements, each including a display area for exhibiting an indication of the measured value, substantially surrounded by a variable color background area. The color... | 03/26/1991 |
| 4967373 | Multi-colored dot display device A multi-colored dot matrix display device and its controller which has a microprocessor and address buffers, data buffers and video memory planes. Each video memory plane has an associated address buffer and an associated data buffer. A graph control data... | 10/30/1990 |
| 4958147 | Graphic display processing system and displayed pattern picking method used in the same A graphic display processing system is disclosed, in which a two-dimensional pattern or an image of a three-dimensional pattern can be displayed on the display screen of a display device, and moreover it can be rapidly judged whether or not each graphic d... | 09/18/1990 |
| 4958301 | Method of and apparatus for converting attributes of display data into desired colors in accordance with relation An apparatus for displaying display data without color competition includes a memory for storing the display data, attributes being assigned to portions of the display data in units of pixels, a controller for obtaining, in response to an input change ins... | 09/18/1990 |
| 4951228 | Method of generating raster data useful in reproducing a multitone image A priority grade is provided to each of several graphic figures. Respective contour lines of the graphic figures are classified into two groups according to respective locations. Respective contour lines in the two groups are serially selected in a descen... | 08/21/1990 |
| 4931929 | Design component selection computer with specification of product characteristics and of color by machine readable device A process for identification, description and display of design components, such as interior decoration products, selected by describing desired component characteristics to a digital computer. An image database is provided, preferably in the form of an a... | 06/05/1990 |
| 4924413 | Color conversion apparatus and method An apparatus and method in which a color graphics display system can run software written for either a color graphics system or a monochrome system, and in which a monochrome graphics system can run software written for either a monochrome system or a col... | 05/08/1990 |
| 4908779 | Display pattern processing apparatus A display pattern processing apparatus is responsive to pattern data and color codes input by an operator. A program memory stores program for execution, appropriate programs being selected for execution depending on the input pattern data. Simple color r... | 03/13/1990 |
| 4788535 | Display apparatus A display apparatus having an inverting circuit which can be switched to invert white signals into black signals and black signals into white signals of image signal to reverse the contract of a black and white signal. This contrast can be switched indepe... | 11/29/1988 |
| 4734619 | Display device with variable color background A variable color display device includes a plurality of variable color display areas arranged in a pattern and substantially surrounded by a variable color background area. The color of the background area is controlled to be substantially complementary t... | 03/29/1988 |
| 4734845 | System for simultaneous display of a trojectory upon a still picture A trajectory display system displays a still picture, which includes a machining region, and a trajectory by making a color designation in the form of a black base picture background color (a) and a three-color bit pattern R (red), G (green) and B (blue).... | 03/29/1988 |
| 4716403 | Liquid crystal display device A multi-color liquid crystal display includes liquid crystal micro-shutters which open and close filters arranged as dots in a mosaic or stripe pattern. Fine and clear color image display and color graphic display are realized in the device wherein the fi... | 12/29/1987 |
| 4695832 | Analog color selector An apparatus is disclosed with which a graphics designer can select an exact color to be shown on a video display device. The apparatus includes a control element movable in a region having at least two geometrical dimensions, each position in the region ... | 09/22/1987 |
| 4642780 | Space planning/facilities management system using priority and affinity colors Disclosed are a system and a method useful in fields such as architecture, space planning, interior design and corporate facility management, for efficiently designing and allocating space to the various subdivisions of an organization. Manipulation of co... | 02/10/1987 |
| 4524421 | Computerized graphics system and method using an electronically synthesized palette The disclosed system and method allow an artist to blend a desired color from available source (i.e., menu) colors and use the resulting blend color at the desired part of the picture and/or store the blend color for future use as a source color. A palett... | 06/18/1985 |
| 4501931 | Color information input system for electronic blackboard A color information input system in which handwritten information, such as letters or figures, etc., is input on an entry area by being converted into electrical signals. In order to display the handwritten information in color, different colored pens are... | 02/26/1985 |
| 4467322 | Digital shade control for color CRT background and cursors A color cathode ray tube is provided in a color monitor of a video display terminal. The red, green and blue color video input lines are connected to novel control circuits which permit the selection of several different shades of colors for the backgroun... | 08/21/1984 |
| 4155095 | Chroma control for television control apparatus Apparatus and method for including color control with an apparatus producing "black-and-white" signals for a television receiver. Logic circuits, which activate circuits for the generation of the color-carrying video signals, are responsive to coded or un... | 05/15/1979 |
| 4149152 | Color display having selectable off-on and background color control Circuit for controlling the color of dot elements in a raster scan display. A data memory stores the state (on or off) of dot elements which are mapped onto the raster scan display. At least one smaller auxiliary memory is provided to store one set of col... | 04/10/1979 |