Patents by Inventor Douglas A. Voorhies

Douglas A. Voorhies has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20020180740
    Abstract: A graphics pipeline system and associated method are provided with an integrated clipping operation. First included is a transform module positioned on a single semiconductor platform for transforming graphics data from a first space to a second space. Also provided is a lighting module positioned on the same single semiconductor platform as the transform module. The lighting module is adapted for performing lighting operations on the graphics data. A clipping operation is also performed utilizing the single semiconductor platform.
    Type: Application
    Filed: June 28, 2002
    Publication date: December 5, 2002
    Applicant: nVIDIA CORPORATION
    Inventors: John Erik Lindholm, Simon Moy, Kevin Dawallu, Mingjian Yang, John Montrym, David B. Kirk, Paolo E. Sabella, Matthew N. Papakipos, Douglas A. Voorhies, Nicholas J. Foskett
  • Patent number: 6489965
    Abstract: A system, method and computer program product are provided for improving display characteristics in a computer graphics pipeline. Initially, color data is received from memory of the computer graphics pipeline. Thereafter, the saturation and/or sharpness of the color data is altered for improving display characteristics. Next, the color data is outputted for being displayed by a display device.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: December 3, 2002
    Assignee: nVIDIA Corporation
    Inventor: Douglas A. Voorhies
  • Patent number: 6469707
    Abstract: A method and system for efficiently rendering and displaying the color intensity information of a pixel in a computer system is disclosed. The pixel includes a plurality of fragments. The method and system comprises providing a weighted average of a preselected number of the plurality of fragments for a pixel for a plurality of the color intensity information to a first portion of a register. The register is within a data structure in the computer system. The method and system also includes providing the color intensity information of a preselected number of fragments, except the one with the largest coverage to at least one additional portion of the register. The method and system further includes sending the information in the first portion and at least one additional portion to a memory in the computer system and sending the information in the first portion and at least one additional portion of the memory to a display.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: October 22, 2002
    Assignee: NVIDIA Corporation
    Inventor: Douglas A. Voorhies
  • Patent number: 6462737
    Abstract: A graphics pipeline system is provided with an integrated clipping operation. First included is a transform module adapted for being coupled to a buffer to receive graphics data therefrom. Such transform module is positioned on a single semiconductor platform for transforming the graphics data from a first space to a second space. Also provided is a lighting module coupled to the transform module and positioned on the same single semiconductor platform as the transform module. The lighting module is adapted for performing lighting operations on the graphics data received from the transform module. A range clamp inversion function and a clipping operation are performed on the same single semiconductor platform as the transform module and the lighting module.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: October 8, 2002
    Assignee: Nvidia Corporation
    Inventors: John Erik Lindholm, Simon Moy, Kevin Dawallu, Mingjian Yang, John Montrym, David B. Kirk, Paolo E. Sabella, Matthew N. Papakipos, Douglas A. Voorhies, Nicholas J. Foskett
  • Patent number: 6452595
    Abstract: A graphics pipeline system is provided for graphics processing. Such system includes a transform module adapted for receiving vertex data. The transform module serves to transform the vertex data from a first space to a second space. Coupled to the transform module is a lighting module which is positioned on the single semiconductor platform for performing lighting operations on the vertex data received from the transform module. Also included is a rasterizer coupled to the lighting module and positioned on the single semiconductor platform for rendering the vertex data received from the lighting module. During use, an antialiasing feature is implemented to improve a quality of the graphics rendering.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: September 17, 2002
    Assignee: Nvidia Corporation
    Inventors: John S. Montrym, Douglas A. Voorhies, Steven E. Molnar
  • Publication number: 20020105519
    Abstract: A graphics pipeline system is provided for graphics processing. Such system includes a transform module adapted for being coupled to a vertex attribute buffer for receiving vertex data. The transform module serves to transform the vertex data from object space to screen space. Coupled to the transform module is a lighting module which is positioned on the single semiconductor platform for performing lighting operations on the vertex data received from the transform module. Also included is a rasterizer coupled to the lighting module and positioned on the single semiconductor platform for rendering the vertex data received from the lighting module.
    Type: Application
    Filed: September 20, 2001
    Publication date: August 8, 2002
    Inventors: John Erik Lindholm, Simon Moy, Kevin Dawallu, Mingjian Yang, John Montrym, David B. Kirk, Paolo E. Sabella, Matthew N. Papakipos, Douglas A. Voorhies, Nicholas J. Foskett
  • Publication number: 20020047846
    Abstract: A graphics pipeline system is provided for graphics processing. Such system includes a transform module adapted for being coupled to a vertex attribute buffer for receiving vertex data. The transform module serves to transform the vertex data from object space to screen space. Coupled to the transform module is a lighting module which is positioned on the single semiconductor platform for performing lighting operations on the vertex data received from the transform module. Also included is a rasterizer coupled to the lighting module and positioned on the single semiconductor platform for rendering the vertex data received from the lighting module.
    Type: Application
    Filed: September 20, 2001
    Publication date: April 25, 2002
    Inventors: John Erik Lindholm, Simon Moy, Kevin Dawallu, Mingjian Yang, John Montrym, David B. Kirk, Paolo E. Sabella, Matthew N. Papakipos, Douglas A. Voorhies, Nicholas J. Foskett
  • Publication number: 20020027553
    Abstract: A graphics pipeline system is provided for graphics processing. Such system includes a transform module adapted for being coupled to a vertex attribute buffer for receiving vertex data. The transform module serves to transform the vertex data from object space to screen space. Coupled to the transform module is a lighting module which is positioned on the single semiconductor platform for performing lighting operations on the vertex data received from the transform module. Also included is a rasterizer coupled to the lighting module and positioned on the single semiconductor platform for rendering the vertex data received from the lighting module.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 7, 2002
    Inventors: John Erik Lindholm, Simon Moy, Kevin Dawallu, Mingjian Yang, John Montrym, David B. Kirk, Paolo E. Sabella, Matthew N. Papakipos, Douglas A. Voorhies, Nicholas J. Foskett
  • Patent number: 6342888
    Abstract: A graphics pipeline system is provided for graphics processing. Such system includes a transform module adapted for receiving vertex data. The transform module serves to transform the vertex data from a first space to a second space. Further, the transform module of the graphics pipeline system is capable of carrying out a blending operation. Coupled to the transform module is a lighting module which is positioned on the single semiconductor platform for performing lighting operations on the vertex data received from the transform module. During use, the lighting module of the graphics pipeline system is capable of carrying out a fog operation.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: January 29, 2002
    Assignee: nVidia Corporation
    Inventors: John Erik Lindholm, Simon Moy, Kevin Dawallu, Mingjian Yang, John Montrym, David B. Kirk, Paolo E. Sabella, Matthew N. Papakipos, Douglas A. Voorhies, Nicholas J. Foskett
  • Patent number: 6198488
    Abstract: A graphics pipeline system is provided for graphics processing. Such system includes a transform module adapted for being coupled to a vertex attribute buffer for receiving vertex data. The transform module serves to transform the vertex data from object space to screen space. Coupled to the transform module is a lighting module which is positioned on the single semiconductor platform for performing lighting operations on the vertex data received from the transform module. Also included is a rasterizer coupled to the lighting module and positioned on the single semiconductor platform for rendering the vertex data received from the lighting module.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: March 6, 2001
    Assignee: NVidia
    Inventors: John Erik Lindholm, Simon Moy, Kevin Dawallu, Mingjian Yang, John Montrym, David B. Kirk, Paolo E. Sabella, Matthew N. Papakipos, Douglas A. Voorhies, Nicholas J. Foskett
  • Patent number: 5704024
    Abstract: An apparatus for generating a reflection from a three-dimensional environment map. The apparatus includes a reflection vector generator which receives an eye vector and a normal vector neither of which need be normalized. This reflection vector generator generates a reflection vector without vector normalization. The reflection vector generator then couples to a decoder to supply the generated reflection vector. The decoder, in turn, determines a location where the reflection vector indexes the selected 2-dimensional map which forms part of the environment map.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: December 30, 1997
    Assignee: Silicon Graphics, Inc.
    Inventors: Douglas Voorhies, James Foran
  • Patent number: 5109481
    Abstract: A system for quadratic and higher order interpolation of pixel color and other pixel values into a bitmap image enables enhanced shading for generation of realistic computer graphics images. The system incorporates modules for executing incremental evaluation of pixel values, utilizing forward differencing in N arbitrary directions of incremental evaluation. The system alternatively incorporates non-incremental evaluation elements for directly evaluating polynomials or executing a spline function of control points.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: April 28, 1992
    Assignee: Hewlet-Packard Company
    Inventors: Olin G. Lathrop, David B. Kirk, Douglas A. Voorhies
  • Patent number: 5097427
    Abstract: Texture mapping apparatus includes a memory for storing input texture values, interpolators for generating illumination values for sets of display pixels, elements for addressing the memory to generate output texture values, and logic elements for combining the output texture values and the illumination values to generate display color values for each pixel.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: March 17, 1992
    Assignee: Hewlett-Packard Company
    Inventors: Olin G. Lathrop, Douglas A. Voorhies, David B. Kirk
  • Patent number: 4566000
    Abstract: Image display equipment has a memory element for storing a selected combinatorial function of a cursor pattern and image field existing at an addressed cursor position, and has a controllable selector for displaying, at the cursor field, either the image field or the combined cursor field and image pattern. A single display memory can store the image field, the cursor pattern, and the selected combination of cursor pattern and image field. Selection logic addresses the stored combination pattern in lieu of the image field to provide the desired cursor display at the addressed cursor position.
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: January 21, 1986
    Assignee: Prime Computer, Inc.
    Inventors: Craig E. Goldman, Douglas A. Voorhies