Navigation device for receiving satellite broadcast distribution of map data
First Claim
Patent Images
1. A navigation device comprising:
- a central processing unit;
a computer storage medium in communication with the central processing unit;
a satellite broadcast receiver in communication with the central processing unit and with the computer storage medium, wherein the receiver receives broadcast map data; and
a direction sensor, in communication with the central processing unit, that determines a travel heading of the navigation device, wherein the broadcast map data is stored in the computer storage medium as a function of the travel heading of the navigation device.
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Abstract
A navigation device having a satellite broadcast receiver for receiving a broadcast transmission of map data for use in the navigation device. The navigation device also includes a location determining device such as a global positioning system receiver to determine a geographic location of the navigation device. The location of the device is compared with the received map data, and if there is a match, the map data is stored in a computer storage medium and displayed on a screen.
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Citations
16 Claims
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1. A navigation device comprising:
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a central processing unit;
a computer storage medium in communication with the central processing unit;
a satellite broadcast receiver in communication with the central processing unit and with the computer storage medium, wherein the receiver receives broadcast map data; and
a direction sensor, in communication with the central processing unit, that determines a travel heading of the navigation device, wherein the broadcast map data is stored in the computer storage medium as a function of the travel heading of the navigation device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of providing map data to a navigation device comprising:
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receiving a broadcast transmission including map data corresponding with a first geographic location;
determining a direction of travel for the navigation device;
comparing the first geographic location with the direction of travel of the navigation device; and
if the first geographic location matches the direction of travel, storing the map data in a computer storage medium as a function of the direction of travel of the navigation device. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
determining a second geographic location corresponding with the first geographic location of the navigation device;
comparing the first geographic location to the second geographic location; and
if the first geographic location matches the second geographic location, storing the map data in the computer storage medium.
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9. The method of claim 8 wherein the operation of determining a second geographic location includes receiving a global positioning satellite signal.
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10. The method of claim 9 further including the operation of displaying a map image corresponding with the map data.
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11. The method of claim 7 wherein the map data is in a bit-map format.
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12. The method of claim 7 wherein the map data is in vector graphic format.
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13. The method of claim 7 wherein the map data is in a rastor graphic format.
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14. The method of claim 7 wherein the map data is in a geographic information system format.
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15. The method of claim 8 wherein the first geographical location includes a first latitude component and a first longitude component, and the second geographic location includes a second latitude component and a second longitude component.
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16. A navigation device comprising:
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means for receiving a satellite broadcast transmission of map data;
means for receiving a global positioning satellite transmission to determine a location of the navigation device;
means for determining a direction of travel for the navigation device;
means for storing the map data as a function of the direction of travel of the navigation device; and
means for displaying the map data.
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Specification