According to SiRF, "SiRFDiRect gives our portable navigation device customers a competitive edge by enabling them to provide in-car system navigation accuracy."

In-Car GPS systems tap into the car's accelerometer and brake light to determine speed and position when no GPS signal is available. SiRF's DR sensor achieves the same accuracy, seamlessly switching between DR and regular GPS, but can be embedded in the device or mounted on the dashboard. SiRF says the chips will be available to OEM manufacturers in Q3 this year.