Navigational guidance for crossing a boundary line
First Claim
1. A navigation device, comprising:
- a location determining component configured to generate geographic location data indicative of a geographic location of the navigation device and a boundary line formed over a body of water;
a processor configured to;
calculate a present speed and direction of the navigation device based upon changes in the geographic location data over time;
start a countdown timer having an expiration time indicating when a boat in which the navigation device is mounted needs to cross the boundary line; and
a display configured to;
display a graphical representation of the geographic location of the navigation device, the boundary line, and a predictor line extending from the geographic location of the navigation device in the direction in which the boat is traveling,wherein the predictor line has a length representing a predicted distance to be traversed by the boat when traveling at the calculated present speed for a time period equal to the expiration time of the countdown timer.
1 Assignment
0 Petitions
Accused Products
Abstract
A navigation device is disclosed that provides navigational guidance to boats needing to cross a boundary line at a milestone event time. Port and starboard laylines and guidelines may be displayed with the boundary line using wind direction data. The port and starboard layline angles may change with the wind direction, while their lengths may represent a distance traversed by the boat tacking at the port and starboard layline angles for a target time period at a target speed. A predictor line may be displayed extending from the boat in the direction in which the boat is traveling and may have a length indicating a distance traversed by the boat at its current speed until the milestone event time. The predictor line length and color may provide feedback regarding whether the boat will cross the boundary too early or too late given its current speed and direction.
-
Citations
20 Claims
-
1. A navigation device, comprising:
-
a location determining component configured to generate geographic location data indicative of a geographic location of the navigation device and a boundary line formed over a body of water; a processor configured to; calculate a present speed and direction of the navigation device based upon changes in the geographic location data over time; start a countdown timer having an expiration time indicating when a boat in which the navigation device is mounted needs to cross the boundary line; and a display configured to; display a graphical representation of the geographic location of the navigation device, the boundary line, and a predictor line extending from the geographic location of the navigation device in the direction in which the boat is traveling, wherein the predictor line has a length representing a predicted distance to be traversed by the boat when traveling at the calculated present speed for a time period equal to the expiration time of the countdown timer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A navigation device located within a sailboat, comprising:
-
a location determining component configured to generate geographic location data indicative of a geographic location of the sailboat and a starting line of a sailboat race; a processor configured to; calculate a present speed and direction of the sailboat based upon changes in the geographic location data over time; start a countdown timer having an expiration time indicating when the sailboat needs to cross the starting line for purposes of the sailboat race, and a display configured to; display a graphical representation of the geographic location of the sailboat, the starting line, and a predictor line extending from the geographic location of the sailboat in the direction in which the sailboat is traveling, wherein the predictor line has a length representing a predicted distance traversed by the sailboat when traveling at the calculated present speed for a time period equal to the expiration time of the countdown timer, and wherein the display is further configured to update the displayed predictor line based upon changes in the calculated present speed of the sailboat such that the displayed predictor line has a first color when the predicted distance is less than or equal to the distance between the sailboat and the starting line, and has a second color when the predicted distance is greater than the distance between the sailboat and the starting line. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A computer-implemented method in a mobile computing device, comprising:
-
receiving, by one or more processors, geographic location data indicative of a geographic location of a sailboat and a starting line of a sailboat race; calculating, by one or more processors, a present speed and direction of the sailboat based upon changes in the geographic location data over time; starting, by one or more processors, a countdown timer having an expiration time indicating when the sailboat needs to cross the starting line for purposes of the sailboat race; and displaying, by one or more processors, a graphical representation of the geographic location of the sailboat, the starting line, and a predictor line extending from the geographic location of the sailboat in the direction in which the sailboat is traveling, wherein the predictor line has a length representing a predicted distance traversed by the sailboat when traveling at the calculated present speed for a time period equal to the expiration time of the countdown timer, and updating, by one or more processors, the displayed predictor line based upon changes in the calculated present speed of the sailboat such that the displayed predictor line has a first color when the predicted distance is less than or equal to the distance between the sailboat and the starting line, and has a second color when the predicted distance is greater than the distance between the sailboat and the starting line. - View Dependent Claims (18, 19, 20)
-
Specification