Systems, functional data, and methods to bias map matching
First Claim
1. A navigation system, comprising:
- a storage device for housing navigation data; and
a navigation device for communicating with and retrieving navigation data from the storage device, wherein the navigation device generates a current score associated with a current position and a current bearing of the navigation device, the current score determines whether the device is located on a planned route and is biased to map the current position to a position on the planned route if the current score is within a predefined tolerance level.
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Abstract
Devices, systems, functional data and methods are provided for biasing an active location to an acceptable location within a planned route of a map. The navigational device with map biasing capabilities includes a processor communicating with a memory. In biasing a map, an active position and a planned position are received, and an active score and a planned score are associated with each position, respectively. The active position is checked to ensure it falls within a second range, and if it does the active score is made to fall within a first range associated with the planned score, such that the active position is biased to appear as if it were the planned position.
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Citations
20 Claims
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1. A navigation system, comprising:
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a storage device for housing navigation data; and
a navigation device for communicating with and retrieving navigation data from the storage device, wherein the navigation device generates a current score associated with a current position and a current bearing of the navigation device, the current score determines whether the device is located on a planned route and is biased to map the current position to a position on the planned route if the current score is within a predefined tolerance level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A navigation system, comprising:
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a navigation device; and
instructions processing on the navigation device, wherein the instructions generate a current score associated with a current position of the navigation device, and wherein the current score is regularly compared to thoroughfare scores associated with positions of thoroughfares on a planned route for the navigation device, and the current score is biased in favor of being on the planned route when the current score falls within a predefined threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A navigation system, comprising:
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a navigation device in communication with a positioning system to determine a current position for the navigation device; and
instructions which bias the current position of the navigation device to a route position on a planned route when the current position when compared to thorough fare positions is within a predefined threshold. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification