Brightness adjusting method for digital exterior mirror of motor vehicle, involves determining brightness signal based on brightness of environment of vehicle, and setting brightness of display based on signal and another brightness signal

摘要

The method involves determining a brightness signal (3) based on a brightness of an environment of a motor vehicle. Another brightness signal (4) is detected via a manually operable control device (9), where brightness of a display i.e. digital exterior mirror, is set based on the former brightness signal and the latter brightness signal. The brightness of the environment of the vehicle is determined by a camera. The former brightness signal is determined based on a mean value of pixel values within a window (11) of the camera. Independent claims are also included for the following: (1) an operating device (2) a system for adjusting brightness of a display.