초록 ▼

A simplified method of matching a golfer to a golf club and a golf ball by measuring the golfer's club head speed and comparing that measured value to recorded sets of data which correlates a few key variables that can accurately match the golfer with the most suitable golf club and golf ball design

A simplified method of matching a golfer to a golf club and a golf ball by measuring the golfer's club head speed and comparing that measured value to recorded sets of data which correlates a few key variables that can accurately match the golfer with the most suitable golf club and golf ball designed to achieve optimum driving performance.

대표청구항 ▼

A simplified method of matching a golfer to a golf club and a golf ball by measuring the golfer's club head speed and comparing that measured value to recorded sets of data which correlates a few key variables that can accurately match the golfer with the most suitable golf club and golf ball design

A simplified method of matching a golfer to a golf club and a golf ball by measuring the golfer's club head speed and comparing that measured value to recorded sets of data which correlates a few key variables that can accurately match the golfer with the most suitable golf club and golf ball designed to achieve optimum driving performance. orrect said respective errors in said current positions and travel directions to thereby obtain said corrected current positions and travel directions, without application of said filter processing, when it is judged by said error judgement means that said predetermined amount is exceeded. 2. A vehicle navigation apparatus comprising: sensor means for producing signals indicative of amounts of change in heading direction of a vehicle and amounts of change in distance traveled by said vehicle; current position calculation means for calculating successive current positions and travel directions of said vehicle based on said signals produced from said sensor means, said current position calculation means including Global Positioning Satellite (GPS) receiving means for receiving GPS system radio waves and for thereby deriving position measurement data relating to said vehicle, means for applying predetermined filter processing to said position measurement data, and GPS correction means for periodically applying data resulting from said filter processing to correct respective errors in said current positions and travel directions which are calculated by said current position calculation means to obtain corrected current positions and travel directions; error judgement means for judging a deviation which is indicative of at least one of said respective errors in said current positions and travel directions, to determine whether or not said deviation exceeds a predetermined amount, wherein said GPS correction means is adapted to directly apply said position measurement data to correct said respective errors in said current positions and travel directions to thereby obtain said corrected current positions and travel directions, without application of said filter processing, when it is judged by said error judgement means that said predetermined amount is exceeded; map data storage means for storing and providing map data including road map data; means for estimating a travel path which has been traversed by said vehicle up to an estimated current position of said vehicle, based on said corrected current positions and travel directions; and means for periodically performing a map matching processing operation, to compare said travel path with said road map data and apply correction for a residual error in said corrected current positions, based on results of said comparison, to obtain a final corrected current position of said vehicle. 3. A vehicle navigation apparatus as claimed in claim 2, further comprising; display means; and means for reading out, from said map data storage means, road map data corresponding to a region in which said vehicle is currently located and supplying said road map data together with data expressing said final corrected current position, to thereby produce a display of a road map of said region with said final corrected current position visibly distinguished therein. 4. A vehicle navigation apparatus as claimed in claim 2, further comprising means for providing a guidance function comprising: means operable for externally inputting data indicative of a required destination of said vehicle; means for calculating an optimum route extending from said final estimated current position of said vehicle to said destination; display means; and means for reading out from said map data storage means road map data corresponding to a region containing said optimum route and supplying said road map data to said display means together with data expressing said final corrected current position and said optimum route, for thereby producing a display indicative of a relationship between said final estimated current position and said optimum route. 5. A vehicle navigation apparatus as claimed in claim 1, wherein said respectiv