Patent ID: 8013786

Claim:
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.