Patents by Inventor Hemant V. Tengshe

Hemant V. Tengshe 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: 6637883
    Abstract: An eye-tracking system for displaying a video screen pointer at a point of regard of a user's gaze. The system comprises a camera focused on the user's eye; a support connected to the camera for fixing the relative position of the camera to the user's pupil; a computer having a CPU, memory, video display screen, an eye-tracking interface, and computer instructions for: segmenting the digital pixel data of the image of the eye into black and white sections based upon user selectable RGB threshold settings; determining the center of the eye based upon the segmented digital data; mapping the determined center of the eye to a pair of coordinates on the video screen; and displaying a pointer on the video display screen at the point of the regard. The processing performed by the computer includes a fine-tuning capability for positioning the cursor at point on the video screen substantially overlapping the point of regard, and a gaze activated method for selecting computer actions.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: October 28, 2003
    Inventors: Vishwas V. Tengshe, Hemant V. Tengshe, Venkatesh G. Tengshe