Patent attributes
A vehicular vision system includes a rear backup camera and a display device including a video display screen. The rear backup camera is electrically powered no later than 200 milliseconds after a driver of the vehicle shifts the vehicle transmission into reverse gear to commence a backup event. A valid video signal is available from the rear backup camera no later than 500 milliseconds after electricity is provided to the camera. The vehicular vision system displays on the video display screen stable rear backup video images derived from captured image data no later than two seconds after the driver shifts the vehicle transmission into reverse gear. Commencing when the vehicle transmission was shifted into reverse gear to begin the backup event, only rear backup video images derived from image data captured by the rear backup camera are displayed on the video display screen for the duration of the backup event.