Acceleration data is repeatedly acquired, and an acceleration vector having a magnitude and a direction of an acceleration represented by the acceleration data is sequentially accumulated so as to calculate an accumulation vector. A following vector which follows, at a predetermined rate, the accumulation...http://www.google.com/patents/US7980952?utm_source=gb-gplus-sharePatent US7980952 - Storage medium having information processing program stored thereon and information processing apparatus
Storage medium having information processing program stored thereon and ...
