Claims
- 1. A GPS receiver comprising:
correlation circuitry adapted to receive a control signal and provide data corresponding to a correlation of a signal with a generated frequency and a generated code at a plurality of time offsets based on said control signal, wherein said control signal is based on an occurrence of a transmission of an interference signal; circuitry adapted to provide said generated frequency and said generated code at said plurality of time offsets to said correlation circuitry; and
- 2. The GPS receiver of claim 1 wherein said transmission is from an associated wireless communications device, further wherein said interference signal is a communications signal transmitted from said wireless communications device.
- 3. The GPS receiver of claim 1 further comprising jammer response circuitry adapted to provide said control signal to said correlation circuitry based on the occurrence of the transmission of the interference signal.
- 4. The GPS receiver of claim 3 wherein said jammer response circuitry activates said control signal during said transmission and deactivates said control signal when said transmission is complete.
- 5. The GPS receiver of claim 3 wherein said jammer response circuitry is further adapted to repeatedly provide said control signal based on a wireless communications device repeatedly transmitting said interference signal, further wherein said interference signal is a communications signal.
- 6. The GPS receiver of claim 1 wherein said correlation circuitry comprises accumulation circuitry adapted to accumulate results of said correlation based on said control signal to provide said data.
- 7. The GPS receiver of claim 6 wherein said accumulation circuitry is further adapted to stop accumulation of said correlation when said control signal is active and resume accumulation when said control signal is deactivated.
- 8. The GPS receiver of claim 6 wherein said data is constant while said control signal is active.
- 9. A system comprising:
a receiver frontend adapted to receive a global positioning system (GPS) signal and provide a baseband signal based on said radio-frequency signal; correlation circuitry adapted to receive a control signal and provide data corresponding to a correlation of said baseband signal with a frequency and a generated code at a plurality of time offsets based on said control signal; circuitry adapted to provide said generated frequency and said generated code at said plurality of time offsets to said correlation circuitry; jammer response circuitry adapted to provide said control signal to said correlation circuitry based on an occurrence of a transmission of a communications signal; and wireless transmission circuitry adapted to transmit said communications signal, wherein said communications signal is much stronger than said GPS signal.
- 10. The GPS receiver of claim 9 wherein said correlation circuitry comprises accumulation circuitry adapted to accumulate results of said correlation based on said control signal to provide said data.
- 11. The GPS receiver of claim 10 wherein said accumulation circuitry is further adapted to stop accumulation of said correlation when said control signal is active and resume accumulation when said control signal is deactivated.
- 12. The GPS receiver of claim 11 wherein said data is constant while said control signal is active.
- 13. The GPS receiver of claim 9 wherein said jammer response circuitry activates said control signal during said transmission and deactivates said control signal when said transmission is complete.
RELATED PATENT APPLICATIONS
[0001] This U.S. patent application is related to the following concurrently filed U.S. patent applications:
[0002] i) USING FFT ENGINES TO PROCESS DECORRELATED GPS SIGNALS TO ESTABLISH FREQUENCIES OF RECEIVED SIGNALS by Warloe et al.;
[0003] ii) ADDRESS TRANSLATION LOGIC FOR USE IN A GPS RECEIVER by Warloe et al.;
[0004] iii) SAVING POWER IN A GPS RECEIVER BY CONTROLLING DOMAIN CLOCKING by Warloe et al.; and
[0005] iv) AN IMPROVED GPS RECEIVER by Warloe et al., wherein these related U.S. patent applications are incorporated herein by reference in their entireties.