A portable handheld device for collecting and displaying golf round data.
The data collected for each stroke includes the location, time and club
used and the resulting ball position achieved. Locations on the golf
course are determined by radiolocation. Data transfers between the
handheld device and external storage are by direct connection or cellular
telephone or some other wireless link. Before each drive or approach
shot, player performance and course distance information are used to help
the player choose the correct club. Putt break prediction is provided
before putting strokes. Information that a stroke has been taken and
which club was used can be entered manually by the player or sensed
automatically from telemetry equipped golf clubs. Golf round data
collected is used to produce play souvenirs, records and analyses. Any
selected stroke in a round can also be replayed on a graphical display of
the handheld device.