Patent ID: 6029121
Filing Date: 2000-02-22
Classification: A63B,G01S

Abstract:
A golf course distance measuring system, comprising:a base unit located at a known location on a golf course;a portable, hand-held unit to be carried by a user such as a golfer or course surveyor;means located in said base unit, for receiving a plurality of first positional satellite timing signals;means located in said base unit for entering and storing said known location of said base unit;means located in said base unit, for calculating a plurality of numerical correction factors utilizing said first positional satellite timing signals and said known location of said base unit;means located in said base unit, for transmitting said plurality of numerical correction factors to said hand-held unit;means located in said hand-held unit, for receiving a plurality of second positional satellite timing signals;means located in said hand-held unit, for transmitting and receiving radio communication signals for receiving said plurality of transmitted numerical correction factors;means located in said hand-held unit for applying said plurality of transmitted numerical correction factors to said plurality of second positional satellite timing signals to produce an accurate position of said hand-held unit;means located in said hand-held unit for transmitting request data wherein said request data includes said accurate position of said hand-held unit;means located in said base unit for receiving and storing said request data;means located in said base unit for receiving and storing a plurality of previously stored locations of various points of interest found on a golf course;means located in said base unit for using said request data and said stored locations to calculate data representing a distance between said user and a point of interest on a golf course;means located in said base unit for transmitting said distance data to said hand-held unit;means located in said hand-held unit for receiving said distance data;means located in said hand-held unit for displaying said distance data;a microprocessor located in said hand-held unit for controlling all said means therein;a programmable computer located in said base unit for controlling all said means therein; andmeans for supplying power to said hand-held unit.