Method for making available route data for a navigational device
First Claim
1. A method for making available route data for a navigational device, comprising:
- dividing up a route from a starting point to a destination requested by the navigational device into a plurality of route segments each including a part of the route;
transmitting a first route segment to a navigational unit of the navigational device upon request, the first route segment including a starting field around the starting point, the starting field including a plurality of possible routes and a main route to an intermediate destination on the route to the destination;
transmitting a second route segment, before the intermediate destination is reached, to the navigational unit of the navigational device, the second route segment including a plurality of possible routes around the intermediate destination as a starting field and a main route to one of an additional intermediate destination on the route to the destination and the destination; and
repeating the second route segment transmitting step for additional route segments for additional intermediate destinations until the destination is reached.
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Abstract
For the purpose of making available route data for a navigational device, an overall route is divided up into route segments which each include a part of the overall route. A first route segment is transmitted to the navigational device, upon its request, which around the starting point includes a starting field including a plurality of possible routes, as well as a main route to an intermediate destination. Before the intermediate destination is reached, a further route segment is transmitted to the navigational device, which includes a plurality of possible routes around the intermediate destination as its starting field, as well as a main route to an additional intermediate destination or to the destination itself. The latter step is repeated for route segments for further intermediate destinations until the destination is reached.
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Citations
15 Claims
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1. A method for making available route data for a navigational device, comprising:
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dividing up a route from a starting point to a destination requested by the navigational device into a plurality of route segments each including a part of the route; transmitting a first route segment to a navigational unit of the navigational device upon request, the first route segment including a starting field around the starting point, the starting field including a plurality of possible routes and a main route to an intermediate destination on the route to the destination; transmitting a second route segment, before the intermediate destination is reached, to the navigational unit of the navigational device, the second route segment including a plurality of possible routes around the intermediate destination as a starting field and a main route to one of an additional intermediate destination on the route to the destination and the destination; and repeating the second route segment transmitting step for additional route segments for additional intermediate destinations until the destination is reached. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15)
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7. A method for making available route data for a navigational device, comprising:
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dividing up a route from a starting point to a destination requested by the navigational device into a plurality of route segments each including a part of the route; transmitting a first route segment to a navigational unit of the navigational device upon request, the first route segment including a starting field around the starting point, the starting field including a plurality of possible routes and a main route to an intermediate destination on the route to the destination; transmitting a second route segment, before the intermediate destination is reached, to the navigational unit of the navigational device, the second route segment including a plurality of possible routes around the intermediate destination as a starting field and a main route to one of an additional intermediate destination on the route to the destination and the destination; repeating the second route segment transmitting step for additional route segments for additional intermediate destinations until the destination is reached; and providing an advisory notice on a display unit during a time period of loading a route segment into a display unit of the navigational device that no navigation is occurring.
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Specification