Method and communication system for limiting the functionality of an electronic device
AssigneeTrimble Navigation Limited
InventorDavid Gildea
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Abstract
Embodiments of the present invention recite a method and system for limiting the functionality of a mobile electronic device. In one embodiment, a Global Navigation Satellite System (GNSS) receiver configured to determine a GNSS Doppler frequency shift measurement corresponding to a GNSS signal. A control component is configured to control an operation of the mobile electronic device in response to a control signal which is generated when the GNSS Doppler frequency shift measurement is used to determine that the speed of the mobile electronic device exceeds a speed threshold.
Claims32
A mobile electronic device comprising:
- a Global Navigation Satellite System (GNSS) receiver configured to determine a GNSS Doppler frequency shift measurement corresponding to a GNSS signal;
- and
- a control component configured to control an operation of said mobile electronic device in response to a control signal received from a system comprising a speed determiner configured to use said GNSS Doppler frequency shift measurement to determine a speed of said mobile electronic device wherein said speed determiner is further configured to use a geographical position corresponding to said mobile electronic device and an orbital parameter for a GNSS satellite to determine an expected value proportional to an expected range rate between said mobile electronic device and a GNSS satellite and configured to use said expected value with said GNSS Doppler frequency shift measurement to determine said speed and wherein said control signal is generated when said GNSS Doppler frequency shift measurement is used to determine that said speed of said mobile electronic device exceeds a speed threshold.
A method for limiting the functionality of a mobile electronic device, said method comprising:
- using a Global Navigation Satellite System (GNSS) receiver to determine a GNSS Doppler frequency shift measurement corresponding to a GNSS signal;
- and
- controlling an operation of said mobile electronic device in response to receiving a control signal from a system comprising a speed determiner configured to use said GNSS Doppler frequency shift measurement to determine a speed of said mobile electronic device and to use a geographical position corresponding to said mobile electronic device and an orbital parameter for a GNSS satellite to determine an expected value proportional to an expected range rate between said mobile electronic device and a GNSS satellite and to use said expected value with said GNSS Doppler frequency shift measurement to determine said speed and wherein said control signal is generated when said GNSS Doppler frequency shift measurement is used to determine that said speed of said mobile electronic device exceeds a speed threshold.
Dependencies are inferred from the claim text.