In layman's terms, a "mechanical overlay" can be an audio equalizer, musical keyboard, or video game controller, with the "mechanical actuators" representing individual components of the overlay, such as buttons, keys, sliders, dials, wheels, switches, or joysticks.More details at Apple Insider.
Apple said in the filing that the underlying touch sensing device could be a touch pad that is built into a computing device such as a laptop computer or one affixed to a handheld PDA or digital media player. Similarly, the touch sensing device could also be a touch-screen built into a tablet PC or a standalone device such as a tablet-sized touch pad.
Apple working on mechanical overlay touch interface for iPods
Posted on Tuesday, Nov 21 2006 @ 02:40 CET by LSDsmurf