Patents by Inventor Frederik L. Engel

Frederik L. Engel 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).

  • Data input device for use with a data processing apparatus and a data processing apparatus provided with such a device
    Patent number: 5781172
    Abstract: A joystick, mouse, or trackball having a rotationally-symmetrical member. The joystick or the like can be braked by an appropriate control signal from a data processing apparatus such as a computer. Mechanical feedback to the operator is thus realized. In accordance with the invention, the joystick, mouse or trackball also includes an accelerator which is capable of positively accelerating the joystick, mouse or trackball in a desired direction. The mechanical feedback is thus substantially improved.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: July 14, 1998
    Assignee: U.S. Philips Corporation
    Inventors: Frederik L. Engel, Reinder Haakma, Jozeph P. M. Van Itegem
  • Force feedback apparatus and method
    Patent number: RE38242
    Abstract: A joystick, mouse, or trackball having a rotationally-symmetrical member. The joystick or the like can be braked by an appropriate control signal from data processing apparatus such as a computer. Mechanical feedback to the operator is thus realized. In accordance with the invention, the joystick, mouse or trackball also includes an accelerator which is capable of positively accelerating the joystick, mouse or trackball in a desired direction. The mechanical feedback is thus substantially improved.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: September 2, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Frederik L. Engel, Reinder Haakma, Joseph P. M. van Itegem