Patents Assigned to Visual Information Technologies, Inc.
  • Patent number: 5146592
    Abstract: An image processor having an image algorithm processor (66) operating under control of a writable control store (94), and a number of parallel image processors (72) operating under control of instruction words from a writable control store (100). An image memory controller (68) receives memory addresses from the image algorithm processor (66) for coordinating the reading and writing of an image memory (82) using pixel data processed by the parallel image processor set (72). The image memory controller (68) arbitrates memory address request cycles, memory refresh cycles and screen refresh cycles. The image memory (82) includes different planes (84, 86 and 88) associated with red, green and blue pixel data. Associated with each image memory plane is a video processor (106) for converting parallel image data to high speed serial image data.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: September 8, 1992
    Assignee: Visual Information Technologies, Inc.
    Inventors: David M. Pfeiffer, David T. Stoner, John P. Norsworthy, Dwight D. Dipert, Jay A. Thompson, James A. Fontaine, Michael K. Corry
  • Patent number: 5129060
    Abstract: An image processor having an image algorithm processor (66) operating under control of a writable control store (94), and a number of parallel image processors (72) operating under control of instruction words from a writable control store (100). An image memory controller (68) receives memory addresses from the image algorithm processor (66) for coordinating the reading and writing of an image memory (82) using pixel data processed by the parallel image processor set (72). The image memory controller (68) arbitrates memory address request cycles, memory refresh cycles and screen refresh cycles. The image memory (82) includes different planes (84, 86 and 88) assocated with red, green and blue pixel data. Associated with each image memory plane is a video processor (106) for converting parallel image data to high speed serial image data.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: July 7, 1992
    Assignee: Visual Information Technologies, Inc.
    Inventors: David M. Pfeiffer, David T. Stoner, John P. Norsworthy, Dwight D. Dipert, Jay A. Thompson, James A. Fontaine, Michael K. Corry
  • Patent number: 5109348
    Abstract: Disclosed is an image processor having an image algorithm processor (66) operating under control of a writable control store (94), and a number of parallel image processors (72) operating under control of instruction words from a writable control store (100). An image memory controller (68) receives memory addresses from the image algorithm processor (66) for coordinating the reading and writing of an image memory (82) using pixel data processed by the parallel image processor set (72). The image memory controller (68) arbitrates memory address request cycles, memory refresh cycles and screen refresh cycles. The image memory (82) includes different planes (84, 86 and 88) associated with red, green and blue pixel data. Associated with each image memory plane is a video processor (106) for converting parallel image data to high speed serial image data.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: April 28, 1992
    Assignee: Visual Information Technologies, Inc.
    Inventors: David M. Pfeiffer, David T. Stoner, John P. Norsworthy, Dwight D. Dipert, Jay A. Thompson, James A. Fontaine, Michael K. Corry
  • Patent number: 5091960
    Abstract: A look-ahead image is employed during ray tracing of the image rendering process to eliminate the processing of pixels which are of no interest within a given boundary of the ray. During rendering, ray tracing is carried out by jumping over the pixels of no interest to thereby enhance the rendering speed.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: February 25, 1992
    Assignee: Visual Information Technologies, Inc.
    Inventor: Timothy L. Butler
  • Patent number: 4985848
    Abstract: An image processor having an image algorithm processor (66) operating under control of a writable control store (94), and a number of parallel image processors (72) operating under control of instruction words from a writable control store (100). An image memory controller (68) receives memory addresses from the image algorithm processor (66) for coordinating the reading and writing of an image memory (82) using pixel data processed by the parallel image processor set (72). The image memory controller (68) arbitrates memory address request cycles, memory refresh cycles and screen refresh cycles. The image memory (82) includes different planes (84, 86 and 88) associated with red, green and blue pixel data. Associated with each image memory plane is a video processor (106) for converting parallel image data to high speed serial image data.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: January 15, 1991
    Assignee: Visual Information Technologies, Inc.
    Inventors: David M. Pfeiffer, David T. Stoner, John P. Norsworthy, Dwight D. Dipert, Jay A. Thompson, James A. Fontaine, Michael K. Corry
  • Patent number: 4955024
    Abstract: Disclosed is an image processor having an image algorithm processor (66) operating under control of a writable control store (94), and a number of parallel image processors (72) operating under control of instruction words from a writable control store (100). An image memory controller (68) receives memory addresses from the image algorithm processor (66) for coordinating the reading and writing of an image memory (82) using pixel data processed by the parallel image processor set (72). The image memory controller (68) arbitrates memory address request cycles, memory refresh cycles and screen refresh cycles. The image memory (82) includes different planes (84, 86 and 88) associated with red, green and blue pixel data. Associated with each image memory plane is a video processor (106) for converting parallel image data to high speed serial image data.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: September 4, 1990
    Assignee: Visual Information Technologies, Inc.
    Inventors: David M. Pfeiffer, David T. Stoner, John P. Norsworthy, Dwight D. Dipert, Jay A. Thompson, James A. Fontaine, Michael K. Corry