| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable feed back system which provides regularly updated values for performance of an athlete. SOLUTION: This system has a means for downloading a course from downloaded geographical passage points, a GPS receiver for obtaining passage points with a series of time records, a means for calculating feed-back data of the athletic performance from the passage points with a series of time records obtained by the GPS receiver, and a displaying system for displaying the feed-back data of the athletic performance to the athlete. The displaying system is set for displaying a course guiding direction indicator for guiding the athlete. COPYRIGHT: (C)2009,JPO&INPIT
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