Voice guidance timing in a vehicle navigation system
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United States of America Patent
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May 18, 1999
Grant Date -
N/A
app pub date -
Oct 11, 1996
filing date -
Oct 11, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus are provided for providing route guidance to a user of a vehicle navigation system. A route is generated which corresponds to a plurality of maneuvers. A warning distance is determined from a particular geographic location associated with a particular maneuver, the warning distance being based in part on a variable parameter. A maneuver instruction corresponding to the particular maneuver is then provided at the warning distance from the particular geographic location. In some embodiments, where the particular maneuver corresponds to a first junction, and a second junction similar to the first junction is within the warning distance, the warning distance is adjusted to an adjusted warning distance.
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Family
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