A wireless control device includes a small, lightweight housing worn by an operator, for example on the operator's wrist, and a controlled device, for example a personal computer. Several optical emitters, preferably light emitting diodes operating in the infrared range, and several optical detectors...http://www.google.es/patents/US20020024500?utm_source=gb-gplus-sharePatente US20020024500 - Wireless control device
Número de solicitud: 09/947,564 Número de publicación: US 2002/0024500 A1 Fecha de presentación: 7 Sep 2001 Patente emitida: US6747632 ( Fecha de emisión 8 Jun 2004)
