Patents by Inventor John Van Dusen

John Van Dusen 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).

  • Palm scanner using a programmable nutating mirror for increased resolution
    Patent number: 6928195
    Abstract: A system and method for increasing image resolution in a palm print scanner. The method of the invention requires the synchronization of a nutating mirror with a camera frame sync. A first image is scanned at a first nutation position. The mirror is nutated by a fraction of a pixel amount in one direction. Another image is scanned at a second nutation position. The process of nutating the mirror to a different nutation position and scanning an image is repeated until all sub-pixels needed to increase an image resolution are obtained. All of the sub-pixels obtained are then interlaced to obtain a higher resolution image.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: August 9, 2005
    Assignee: Cross Match Technologies, Inc.
    Inventors: Walter G. Scott, John Van Dusen, Richard D. Irving
  • Palm scanner using a programmable nutating mirror for increased resolution
    Publication number: 20020090147
    Abstract: A system and method for increasing image resolution in a palm print scanner. The method of the invention requires the synchronization of a nutating mirror with a camera frame sync. A first image is scanned at a first nutation position. The mirror is nutated by a fraction of a pixel amount in one direction. Another image is scanned at a second nutation position. The process of nutating the mirror to a different nutation position and scanning an image is repeated until all sub-pixels needed to increase an image resolution are obtained. All of the sub-pixels obtained are then interlaced to obtain a higher resolution image.
    Type: Application
    Filed: December 18, 2001
    Publication date: July 11, 2002
    Inventors: Walter G. Scott, John Van Dusen, Richard D. Irving