초록 ▼

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 begin

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 power up, switching from a low power to a full power operational mode. If the detection circuitry does not determine that the engine is running within a predetermined time period, the navigation system reenters the low power mode. The detection circuitry monitors the vehicle's electrical system and determines that the engine is running when an AC content exceeds a predetermined threshold.

대표청구항 ▼

[ What is claimed is:] [1.] A method for operating an electrical system for a vehicle including the steps of:a. maintaining an electrical component of an electrical system for a vehicle in a low power mode when the electrical component is not being utilized and an engine in the vehicle is not runnin

[ What is claimed is:] [1.] A method for operating an electrical system for a vehicle including the steps of:a. maintaining an electrical component of an electrical system for a vehicle in a low power mode when the electrical component is not being utilized and an engine in the vehicle is not running;b. predicting when said electrical component will be utilized;c. generating a warmup signal based upon said prediction; andd. switching said electrical component from said low power mode to an operating mode based upon said warmup signal, d steps b-d being performed prior to the engine in the vehicle running.