| 摘要 |
PROBLEM TO BE SOLVED: To provide a device providing a user with information including a putting direction so as to enter in a cup a golf ball on putting green in golf course. SOLUTION: A marker 10 is used for marking a position of the golf ball 200 on the green in the course. The system includes a detecting part for detecting an inclining degree to the horizon under the ball 200 lying in the mark position and in a specified direction to the cup 100, a first control part for calculating the putting direction, or the direction to which the user putts the ball 200, from the inclining degree, and a first display part for displaying the putting direction. COPYRIGHT: (C)2011,JPO&INPIT
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