Navigation device and method

a technology of navigation device and navigation method, which is applied in the direction of navigation instruments, traffic control systems, instruments, etc., can solve the problems of inability to include transient road alterations, inability to accurately determine the location of the road, etc., to achieve dramatic accelerated processing and faster time frame
US20100332119A1Inactive Publication Date: 2010-12-30TOMTOM INT BV
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
TOMTOM INT BV
Publication Date
2010-12-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of operating a PND or navigation system is described, together with a PND or navigation system for performing such a method. The PND or navigation system includes memory storing map data consisting of base map data files, a display, GPS signal reception and processing device, such together forming a basis for navigation, route guidance, and map information display. In at least one embodiment, the method includes correlating the current location with the map data to derive map-specific parameters for that location and comparing the map-specific parameters with a motion-specific parameter, a vehicle-specific parameter, or the current location to determine whether the current location, motion or vehicle-related characteristic is permissible or appropriate therefore; and in the event that the current location, motion, or vehicle-related characteristic and derived map-specific parameter are seemingly at odds with one another, performing at least one secondary action. The secondary action may include but is not limited to the issuing of an approve / reject prompt to the user, or the automatic creation, modification or deletion of a new or pre-existing correction.
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Description

BACKROUND OF THE INVENTION

[0001] Portable navigation devices (PNDs) including GPS (Global Positioning System) signal reception and processing means are well known and are widely employed as in-car navigation systems. In essence, modern PNDs comprise:

[0002] a processor,

[0003] memory (at least one of volatile and non-volatile, and commonly both),

[0004] map data stored within said memory,

[0005] a software operating system and optionally one or more additional programs executing thereon, to control the functionality of the device and provide various features,

[0006] a GPS antenna by which satellite-broadcast signals including location data can be received and subsequently processed to determine a current location of the device,

[0007] optionally, electronic gyroscopes and accelerometers which produce signals capable of being processed to determine the current angular and linear acceleration, and in turn, and in conjunction with location information derived from the GPS signal, velocity and relat...

Claims

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