An expansion unit 50, 60 or 70 is connected to a controller body 10 including an analog direction key 12, a digital direction key 14, command buttons 20a-20z, command levers 22l, 22r, etc. An expansion unit 50 including a photo emitting unit 52 is connected to thereby make the controller cordless. An...http://www.google.es/patents/US20020103026?utm_source=gb-gplus-sharePatente US20020103026 - Controller and expansion unit for controller
Número de solicitud: 10/106,022 Número de publicación: US 2002/0103026 A1 Fecha de presentación: 27 Mar 2002 Patente emitida: US7081051 ( Fecha de emisión 25 Jul 2006)
