METHOD FOR GENERATING MANOEUVRE GRAPHICS IN A NAVIGATION DEVICE
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Abstract
A technique for controlling a navigation device to generate a navigation manoeuvre graphics for a road junction manoeuvre is proposed. A device embodiment of this technique comprises a routing module adapted to provide routing information pertaining to a scheduled route, with the scheduled route comprising the road junction. Furthermore, an interface to a map database is provided, with the map database containing road data pertaining to the upcoming road junction. A processor of the navigation device analyses the road data to determine one or more junction geometry parameters of the road junction and to compose, based on the junction geometry parameters and from a plurality of pre-defined graphical junction elements, junction graphics data representative of the road junction. The processor is further adapted to generate, from the routing information and the junction geometry parameters, manoeuvre indication graphics data representative of the junction manoeuvre. A display module may then render navigation manoeuvre graphics based on the junction graphics data and the manoeuvre indication graphics data.
77 Citations
29 Claims
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1-15. -15. (canceled)
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16. A method of controlling a navigation device to generate a navigation manoeuvre graphics for a road junction manoeuvre, the method comprising the following steps performed by the navigation device:
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providing a plurality of pre-defined graphical junction elements in a vector graphics format; receiving, from a routing module of the navigation device, routing information pertaining to a scheduled route, the scheduled route comprising a road junction; retrieving, from a map database, road data pertaining to the road junction, wherein the retrieved road data comprises lane information for the road junction; analysing the road data to determine one or more junction geometry parameters of the road junction, wherein at least one of the determined junction geometry parameters relates to the lane information; composing, based on the junction geometry parameters and from the plurality of pre-defined graphical junction elements, junction graphics data representative of the road junction and the lane information; generating, from the routing information and the junction geometry parameters, manoeuvre indication graphics data representative of a lane based junction manoeuvre; and generating a navigation manoeuvre graphics based on the junction graphics data and the manoeuvre indication graphics data. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A navigation device adapted to generate a navigation manoeuvre graphics for a road junction manoeuvre, comprising:
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a graphics element storage module adapted to store a plurality of pre-defined graphical elements, wherein the graphical elements are stored in a vector graphics format; a routing module adapted to provide routing information pertaining to a scheduled route, the scheduled route comprising a road junction; an interface to a map database containing road data pertaining to the road junction, wherein the road data comprises lane information for the road junction; and a processor adapted to analyse the road data to determine one or more junction geometry parameters of the upcoming road junction, wherein at least one of the determined junction geometry parameters relates to the lane information, to compose, based on the junction geometry parameters and from the plurality of pre-defined graphical junction elements, junction graphics data representative of the road junction and the lane information, to generate, from the routing information and the junction geometry parameters, manoeuvre indication graphics data representative of a lane based junction manoeuvre; and
to generate a navigation manoeuvre graphics based on the junction graphics data and the manoeuvre indication graphics data. - View Dependent Claims (28, 29)
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Specification