An occupant restraint system for a vehicle. The system is actuated based on sensed acceleration due to external forces operating on the vehicle. Vectors representing components of external forces are established. A synthesized vector is formed by combining them and calculations are made ...http://www.google.com.tw/patents/US5740041?utm_source=gb-gplus-share專利 US5740041 - Vehicle occupant restraint system responsive to accelleration
