Patents by Inventor David P. Todd

David P. Todd 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).

  • Patent number: 8029138
    Abstract: A method is provided for stimulating a motion-detecting visual pathway of a subject. A subject is tasked with fixating on a central stimulus displayed on a computer-driven display. While the subject is visually fixated, a peripheral stimulus is presented on the display. At least one characteristic of the peripheral stimulus is altered so as to trigger the motion-sensitive visual pathway of the subject. The altered characteristic may be the spatial locus, size, pattern, luminosity or hue of the stimulus. The altered and base stimulus may be alternately displayed in a cyclical manner to sustain the display of a dynamic peripheral stimulus. While alternately displaying the base and altered stimulus, the subject's response, indicative of their detection of the stimulus, may be monitored and recorded. The dynamic peripheral stimulus may be, for example, a repetitively translating object, or a repetitively blinking object.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: October 4, 2011
    Assignee: NovaVision, Inc.
    Inventor: David P. Todd
  • Patent number: 7753526
    Abstract: Alteration of a fixation or peripheral stimulus displayed on a computer-driven display allows a human subject to maintain extended visual fixation upon the resulting dynamic stimulus. The fixation is presented upon the display and the stimulus is altered to allow resensitization of the subject's retina, thereby allowing prolonged visual fixation upon the resulting dynamic target. A dynamic stimulus may utilize a frequency doubling illusion.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: July 13, 2010
    Assignee: NovaVision, Inc.
    Inventor: David P. Todd
  • Patent number: 7748846
    Abstract: Alteration of a fixation or peripheral stimulus displayed on a computer-driven display allows a human subject to maintain extended visual fixation upon the resulting dynamic stimulus. The fixation is presented upon the display and the stimulus is altered to allow resensitization of the subject's retina, thereby allowing prolonged visual fixation upon the resulting dynamic target. A dynamic stimulus may utilize a frequency doubling illusion.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: July 6, 2010
    Assignee: NovaVision, Inc.
    Inventor: David P. Todd
  • Patent number: 7642990
    Abstract: A head-guide for diagnosing or training vision of a user and methods of user thereof are disclosed. The head-guide may include a head-support for orienting a head of the user, a display-support for orienting a display. The head-guide may also include a guide-support connected to the head-support and the display-support. The head-support and display-support may be pre-configured to fix the relative position of the head and the display and the display may present visual stimuli to diagnose or train the vision of the user.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: January 5, 2010
    Assignee: NovaVision, Inc.
    Inventors: David P. Todd, Bernhard Sabel
  • Patent number: 4987848
    Abstract: A dual purpose visual identification and safety flag comprising at least one sheet portion carrying a non-emergency visible identification display and substantially coextensive with the sheet portion, a flexible radar reflecting portion of silver anodized rip-stop nylon.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: January 29, 1991
    Inventor: David P. Todd