private BrightnessCorrection() {
_config = new DisplayConfiguration("brightness.properties", true);
_config.addObserver(this);
reloadConfig();
_currentBrightness = _configuredBrightness;
_newBrightness = _configuredBrightness;
System.out.println("Initial brightness: " + _currentBrightness);
initBrightnessSensorReader();
}
