Providing location data about a mobile entity
First Claim
1. A method of obscuring the location of a mobile entity to a specified accuracy level, wherein available location data having a known accuracy greater than said specified accuracy has its accuracy decreased by combining with the components of the available location data, additional components randomised over a range set by the difference between the known accuracy of the available location data and the specified accuracy level.
5 Assignments
0 Petitions
Accused Products
Abstract
A method and device is provided for obscuring the location of a mobile entity to a specified accuracy level. Available location data that has a known accuracy greater than the specified accuracy has its accuracy decreased (85) by combining with the components of the available location data, additional components randomized over a range set by the difference between the known accuracy of the available location data and the specified accuracy level.
96 Citations
10 Claims
- 1. A method of obscuring the location of a mobile entity to a specified accuracy level, wherein available location data having a known accuracy greater than said specified accuracy has its accuracy decreased by combining with the components of the available location data, additional components randomised over a range set by the difference between the known accuracy of the available location data and the specified accuracy level.
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6. A mobile device comprising a processing subsystem for carrying out processing tasks, a location-discovery subsystem for obtaining the location of the device to known accuracy, and communication subsystem for sending the location of the device to a remote entity;
- the processing subsystem being operative to control the sending out of the device location at a desired accuracy level less than said known accuracy for which purpose the processing subsystem is provided with accuracy-reduction means for combining with components of the device'"'"'s location as provided by the location-discovery subsystem, additional components randomised over a range set by the difference between the known accuracy of the location provided by the location-discovery subsystem data, and said desired accuracy level.
- View Dependent Claims (7, 8, 9, 10)
Specification