US 7,071,871 B2 · Low power dissipation tracking architecture for GPS navigation systems

Abstract

A low power GPS tracking system. The novel system includes a first circuit adapted to collect samples of a signal for a first predetermined length of time and in accordance therewith generate an output signal, and a second circuit for cyclically powering on the first circuit for the first predetermined length of time and powering off the first circuit, or a portion thereof, for a second predetermined length of time. In an illustrative embodiment, the first circuit includes a receiver adapted to receive a GPS signal and output GPS data samples, and a processor adapted to calculate a navigation solution from the GPS data samples using an integrate and dump signal processing technique.

Claims23

Dependent claims

A system comprising:

a circuit including a processor adapted to collect samples of a GPS signal for a first predetermined length of time and in accordance therewith generate an output signal including a navigation solution, said processor, or portions thereof, being adapted to power on and off during said first and second predetermined lengths of time respectively;
said processor being adapted to calculate said navigation solution from said samples using an integrate and dump technique, and
first means for cyclically powering on said circuit for said first predetermined length of time and powering off said circuit, or a portion thereof, for a second predetermined length of time.

Dependencies are inferred from the claim text.

Low power dissipation tracking architecture for GPS navigation systems

Life of this patent

Low power dissipation tracking architecture for GPS navigation systems

Life of this patent

Abstract

Claims23