A navigation system includes a driver presence sensor and engine running detection circuitry. When the detection circuitry determines that the engine of the vehicle is not running, the navigation system enters a low power mode. When the presence of the driver is detected, the navigation system begins...http://www.google.fr/patents/US6052646?utm_source=gb-gplus-shareBrevet US6052646 - Vehicle navigation system with improved powerup performance
Vehicle navigation system with improved powerup performance
