US Patent 7858891 Shape-changing control panel button based on activation/deactivation

A button configuration includes a shape-changing button that has a central region and a peripheral region. The peripheral region encircles the central region and defines a surface plane. The shape-changing button has an active state and an inactive state. The central region of the button protrudes from the surface plane and provides a push button function when the button is in the active state. The central region of the button extends substantially in the surface plane and provides no push button function when the button is in the inactive state. A control panel having shape-changing buttons is also provided.