1
David Gillespie, Timothy P Allen, Aaron T Ferrucci: Pressure sensitive scrollbar feature. Synaptics Incorporated, D Alessandro & Ritchie, March 30, 1999: US05889236 (446 worldwide citation)

A proximity sensor system includes a sensor matrix array having a characteristic capacitance on horizontal and vertical conductors connected to sensor pads. The capacitance changes as a function of the proximity of an object or objects to the sensor matrix. The change in capacitance of each node in ...


2
Timothy Allen, Shawn P Day, Aaron T Ferrucci: Method and apparatus for scroll bar control. Synaptics Incorporated, Malcolm B Wittenberg, August 24, 1999: US05943052 (359 worldwide citation)

An apparatus for touchpad-based scroll control and method for scroll control comprising a data packet processor working in conjunction with a touchpad. A scroll zone, having a central axis, is defined on the touchpad. After detecting a user running a finger on the touchpad in a direction substantial ...