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US 10,371,788 B2Granted
Device positioning
AssigneeNidatech Sweden AB
InventorsHåkan Dackefjord, Bogdan Shelest
Life of this patent
Estimating the term…
Abstract
Described are, among other things, a method, a device and a computer program wherein a large search area for a device that is to be located is successively narrowed by moving and/or rotating a locator device.
Claims14
A method of determining the location of a device comprising a radio transceiver, the method comprising:
- receiving in a mobile locator device a radio signal from said device,
- determining a distance to said device from the locator device at the position of the locator device, said determined distance having a determined distance accuracy, and/or determining a direction to the device with a determined direction accuracy, wherein said determined distance and/or direction is based on the radio signal received from the device,
- forming a geographical area with boundaries set as the determined distance+/−said determined accuracy, and/or as the determined direction+/−said determined direction accuracy,
- subdividing said geographical area into a number of sub-areas and removing any sub area that is not included in all geographical areas formed for each new position of the locator device,
- moving said locator device to a new position and repeating removal of subareas for new positions of the locator device until the total area of the remaining sub-areas is below a threshold value, and
- determining the location of the device as the area of the remaining sub-areas.
3 more elements
A mobile locator device for locating a device, the locator device comprising a radio transceiver, the locator device being adapted to:
- receive a radio signal from said device,
- determine a distance to said device from the locator device at the position of the locator device, said determined distance having a determined distance accuracy, and/or determine a direction to the device with a determined direction accuracy, wherein said determined distance and or direction is based on the radio signal received from the device,
- form a geographical area with boundaries set as the determined distance+/−said determined accuracy, and/or as the determined direction+/−said determined direction accuracy,
- subdivide said geographical area into a number of sub-areas, and remove any sub area that is not included in all geographical areas formed for each new position of the mobile device,
- determine the location of the device as the remaining area(s) when the total area of the remaining sub-areas is below a threshold value.
2 more elements
Dependencies are inferred from the claim text.