| abstract |
Analysis of a golfer's putting stroke towards a target-hole ( 2 ) is derived by an analyzer ( 12;50 ) from sensor-signals representative of initial ball-speed and direction, using accumulated sets of historical putting-data, each set of historical data including initial putted ball-speed and direction and the resultant ball-speed and direction in approach to the target-hole ( 2 ), together with representation of whether the putt was successful. Initial ball-speed and direction is sensed by opto-electronic sensors ( 45 ) responding to back-reflection of infrared beams ( 13 ) from retro-reflectors ( 22 - 26 ) on the putted ball ( 1;20;52 ), or, is using retro-reflectors ( 71 - 73; 77,75 ) on the putter ( 3;51;70;74 ). Resultant ball-speed and direction in approach to the target-hole ( 2 ), and whether the putt is successful, is sensed by a monitor ( 7 ) from infrared beams ( 8 - 10 ). |