Visual navigation aid with point of interest feature
First Claim
Patent Images
1. A visual navigation aid comprisinga radar antenna;
- means for storing map data;
a compass;
means for sensing the position of said radar antenna;
a display;
means for inputting at least one point of interest; and
a controller, said controller responsive to said radar antenna to depict a radar sweep on said display, said controller responsive to said map data storage means to depict a map on said display;
said controller responsive to said compass, said position sensing means and said point of interest input means for controlling said display to depict the point of interest in its proper position on both the map and the radar sweep,whereby radar targets, map features and the point of interest may be correlated.
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Accused Products
Abstract
A navigation aid is provided comprising a radar antenna, a position sensor, a compass, map/chart data, a display, and a controller. The controller determines whether the display depicts a chart, a radar sweep or both. Preferably, the visual navigation aid includes a point of interest feature, wherein at least one point of interest is visually selected on the chart or radar sweep by a cursor or the like. The controller also computes the location of the selected point of interest for display on the chart or radar sweep. In another aspect, the invention comprises methods for inputting and displaying a point of interest on a chart or radar sweep.
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Citations
22 Claims
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1. A visual navigation aid comprising
a radar antenna; -
means for storing map data; a compass; means for sensing the position of said radar antenna; a display; means for inputting at least one point of interest; and a controller, said controller responsive to said radar antenna to depict a radar sweep on said display, said controller responsive to said map data storage means to depict a map on said display; said controller responsive to said compass, said position sensing means and said point of interest input means for controlling said display to depict the point of interest in its proper position on both the map and the radar sweep, whereby radar targets, map features and the point of interest may be correlated. - View Dependent Claims (2, 3, 4, 5)
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6. A method for displaying a point of interest on a radar sweep from a radar antenna comprising the steps of:
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selecting the point of interest on a chart; determining the location of the point of interest; receiving a current geographical position of the radar antenna; comparing the current position of the radar antenna to the point of interest location; computing range and bearing from the radar antenna to the point of interest location; and displaying the point of interest on the radar sweep at the point of interest location. - View Dependent Claims (7, 8, 9)
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10. A method for displaying a point of interest on a chart comprising the steps of:
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visually selecting a point of interest on a radar sweep from a radar antenna; determining initial range and initial bearing from the radar antenna to the point of interest; receiving an initial geographical position of the radar antenna; calculating a location of the point of interest; and displaying the point of interest on the chart at the point of interest location. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A visual navigation aid comprising:
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a radar antenna; means for storing map data; a compass; means for sensing the geographic position of said radar antenna; a display; and a controller responsive to said radar antenna to depict a radar sweep on said display, and responsive to said map data storage means to depict a map on said display; said controller responsive to said compass and to said geographic position sensing means for controlling said display to depict the radar targets and chart features in geographic correlation. - View Dependent Claims (22)
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Specification