Patent ID: 6480149
Filing Date: 2002-11-12
Classification: G01S

Abstract:
A position determining accessory module for use with a user terminal, comprising:an antenna for receiving broadcast position information; position calculation circuitry coupled to said antenna for computing location data from said position information; a battery; a first connector coupled to said battery, said connector comprising a power bus for conveying power from said battery to said accessory module circuitry and to said user terminal, a first signal for identifying said position determining accessory module to said user terminal, and a second signal operating to cause a power up condition in said accessory control module, and further operating to indicate a temperature of said battery to said user terminal; and a second connector comprising a first digital data bus for conveying at least control signals between said user terminal and said position determining accessory module, said second connector further comprising an analog signal bus for conveying location data to said user terminal from said position calculation circuitry.