Map-matching golf navigation system
US6024655A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/47
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method for calibrating and updating a golf course position, yardage and measurement system for golf carts that utilize dead reckoning navigation, to avoid gradual buildup of error from components of the dead reckoning system as the golf cart is being driven on the course during play, for the purpose of aiding golfers in playing the course by displaying distance measurements between the golf cart and various course features of interest. In one embodiment, the method includes storing a map of the course golf cart path in the database of the cart navigation system, determining from a comparison of the golf cart position in the dead reckoning navigation system and the stored golf cart path whether the golf cart is on the cart path during at least a part of the play of each hole; and, if so, calibrating and updating the dead reckoning navigation system according to a correction of error in the indicated position of an icon representing the golf cart relative to the cart path on a display screen in the cart to restore the icon to the cart path. In another embodiment, the travel of the cart is compared to the meanderings of the cart path on the stored map by comparing the dead reckoning…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.