Patents by Inventor Richard Walter Johnson

Richard Walter Johnson 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).

  • Electronic Touch Screen Device Providing Signature Capture and Touch Activation
    Publication number: 20090141008
    Abstract: A touch screen device comprising a display screen, an electromagnetic digitizer disposed behind the display screen for detecting stylus proximity and stylus coordinates, and an infrared touch device secured in front of the display screen for detecting the coordinates of an infrared opaque object. The touch screen device also includes a controller in electronic communication with the electromagnetic digitizer and the infrared touch device. The controller provides an output signal based upon the infrared opaque object coordinates detected by the infrared touch device during periods of time that the electromagnetic digitizer is not detecting stylus proximity and provides an output signal based upon the stylus coordinates detected by the electromagnetic digitizer during periods of time that the electromagnetic digitizer is detecting stylus proximity.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 4, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Richard Walter Johnson, Charles Ray Kirk, Susan Ann Luerich