A haptic feedback planar touch control used to provide input to a computer. A touch input device includes a planar touch surface that inputs a position signal to a processor of the computer based on a location of user contact on the touch surface. The computer can position a cursor in a displayed graphical...http://www.google.de/patents/US6429846?utm_source=gb-gplus-sharePatent US6429846 - Haptic feedback for touchpads and other touch controls
