Apparatus and method for using head gear to sense the motion of the wearer's head and output a signal indicative of the motion. Sensors are used to detect head motion about two mutually perpendicular axes. The sensor signal is fed into a microprocessor to compute a feedback signal indicative of the deviation...http://www.google.fr/patents/US6331168?utm_source=gb-gplus-shareBrevet US6331168 - Golf training head gear for detecting head motion and providing an indication of head movement
Golf training head gear for detecting head motion and providing an ...
