Patents by Inventor Robert Raible

Robert Raible 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).

  • Circuit for interfacing mouse input device to computer system
    Patent number: 4886941
    Abstract: A computer system mouse-type input device. Movements of a track-ball motion sensor are converted to quadrature signals and are accumulated in a counting circuit. The contents of the counter are pulse-position modulated with waveforms characteristic of a resistive-capacitive charging circuit and are read periodically by a computer input channel normally used for input of potentiometer-generated commands. The pulse-position modulated signals are converted to digital values used by the computer to position the cursor on a display screen.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: December 12, 1989
    Assignee: Commodore Business Machines, Inc.
    Inventors: Hedley Davis, Robert Raible