Patents by Inventor Han Che Wang

Han Che Wang 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).

  • Controlling scrolls of a screen image
    Patent number: 6204838
    Abstract: The present invention discloses a pointing device for scrolling a screen image. The pointing device comprises a chassis, a housing having an opening on its top mounted on the chassis, a vertical sensor installed on the chassis below the opening, a plurality of horizontal sensors installed on the chassis beside the vertical sensor, and a control stick vertically installed inside the opening of the housing comprising a top end and a bottom end. The bottom end of the control stick is in contact with the vertical sensor whereas the top end of the control stick protrudes from the opening of the housing and can be horizontally moved within a predetermined angle with respect to the bottom end of the control stick serving as its center. The pointing device further comprises a plate horizontally installed at the bottom end of the control stick with its bottom side positioned above the horizontal sensors.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: March 20, 2001
    Assignee: Primax Electronics Ltd.
    Inventors: Han Che Wang, Shu-Ming Liu, Hong-Che Yen, Chen-Ming Chang