US Patent 5,999,084, granted in 1999 covers a "sensor having a housing" and a depressible actuator in a "resilient dome cap," appearing to cover pressure-sensitive controller buttons. Patents 6,102,802, 6,135,886, 6,343,991, 6,351,205, 6,400,303, and 6,208,271 all basically cover the concept of controllers that include analog pressure-sensitive buttons.
The company also claims that the following patents have been violated: 6,906,700 (3D Controller with Vibration), 6,344,791 (Variable Sensor with Tactile Feedback), 6,347,997 (Analog Controls Housed with Electronic Displays) and 6,222,525 (Image Controller with Sheet Connected Sensors). A patent similar to 6,906,700 (3D Controller with Vibration) held by Immersion Corp. cost Sony millions when it lost a lawsuit brought against it over the company's DualShock technology.
It is interesting that Anascape hasn't targetted Sony with a lawsuit but Ars technica points out that pressure-sensitive buttons were available as early as 2000 with the release of the PlayStation 2 console, for which development probably started before Armstrong even filed his earliest patents. Neither Microsoft or Nintendo have commented about the suit yet.
Sources:
Ars technica
IGN
Written by: James Delahunty @ 4 Aug 2006 19:47