| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a portable device and a desktop device with key pads withstanding environmental rigors. <P>SOLUTION: An embodiment of a system for controlling a graphical user interface of a device includes a tiltable member, an electrically conductive member, a substrate, a drive circuit, a switch, and signal logic. The tiltable member is configured for tilting by a user. The electrically conductive member is configured to move in response to the tilting. The substrate is spaced apart from the electrically conductive member by a gap and has sense electrodes isolated from each other and disposed on the substrate. The drive circuit provides the electrically conductive member with an electrically driven signal. The switch is centrally located between the sense electrodes, wherein the tiltable member is connected to the switch to enable the switch to be actuated in response to tilting of the tiltable member. The signal logic transforms capacitance measurement and actuation of the switch into a signal indicating an input function in a graphical user interface. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
