Speed warning method and apparatus for navigation system
First Claim
1. A speed warning apparatus incorporated with a navigation system for generating a warning when a vehicle speed exceeds a threshold speed, comprising:
- a vehicle speed display unit;
a navigation system having a speed adjustment unit, a warning mechanism and a database providing speed limit information; and
a connecting element transmitting vehicle speed information from the vehicle speed display unit to the navigation system,wherein different threshold speeds are determined at once according to different speed limits along a route by inputting a number in the speed adjustment unit, which indicates a difference in percentage between each speed limit and the threshold speed.
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Abstract
A method and apparatus allows the driver to set a threshold speed for generating a warning by slightly modifying the speed limit, such that a warning mechanism can be activated when the vehicle speed exceeds the threshold speed. The method and apparatus achieves a convenient interface for the driver to set the threshold speeds at once according to different speed limits by setting a number such as a percentage in a speed adjustment unit. The number indicates the difference in percentage between the speed limit and the threshold speed. The threshold speed can be either higher or lower than the speed limit based on the driving style and preference of the driver.
29 Citations
20 Claims
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1. A speed warning apparatus incorporated with a navigation system for generating a warning when a vehicle speed exceeds a threshold speed, comprising:
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a vehicle speed display unit; a navigation system having a speed adjustment unit, a warning mechanism and a database providing speed limit information; and a connecting element transmitting vehicle speed information from the vehicle speed display unit to the navigation system, wherein different threshold speeds are determined at once according to different speed limits along a route by inputting a number in the speed adjustment unit, which indicates a difference in percentage between each speed limit and the threshold speed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for determining a threshold speed for generating a warning according to various speed limits along a route, comprising:
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a global positioning system to determine a route based on a current position and a destination; a database providing different speed limits along the route; a speed adjustment unit adapted to determine a threshold speed; a control unit adapted to control the number in the speed adjustment unit; and a speed information table including the different speed limits along the route and different threshold speeds corresponding to the different speed limits, wherein said threshold speeds are determined by a number set in the speed adjustment unit which indicates a difference in percentage between the speed limit and the threshold speed, and once the number is decided, different threshold speeds corresponding to the different speed limits along the route are determined automatically. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for providing speed information to a driver and determining a threshold speed for generating a warning, comprising the steps of:
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determining a route; providing and displaying speed limit information along the route on a speed information table; determining different threshold speeds at once according to different speed limits along the route by inputting a number in a speed adjustment unit which indicates the difference in percentage between the speed limit and the threshold speed; comparing the threshold speed and vehicle speed; and activating a warning mechanism when the vehicle speed exceeds the threshold speed. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification