Patents Assigned to Poa Sana, LLC
  • User input device for a computer system
    Patent number: 5914709
    Abstract: A user input device for an electronic device is disclosed. The user input device provides positional information using a grid of light. The grid of light is produced from a light source and waveguides. The grid of light is also received and processed using waveguides and a light detector. Optionally, optics may be used to enhance the operation of the user input device. The user input device is particularly suited for use as a user input device for a computer system or the like.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: June 22, 1999
    Assignee: Poa Sana, LLC
    Inventors: David S. Graham, Daniel A. Francis