Mobile Terminal Brightness Control via Sensor Fusion

The patent introduces an acceleration sensor as an intermediary device to verify whether brightness adjustment is truly needed. The acceleration sensor detects device orientation changes, and only when both the light sensor detects brightness change AND the acceleration sensor confirms orientation change does the system adjust display brightness. This intermediary verification mechanism prevents false adjustments caused by multiple point light sources.

The patent implements a feedback mechanism where the acceleration sensor provides verification feedback to confirm whether brightness adjustment is appropriate. The system continuously monitors both light sensor data and acceleration sensor data, and only executes brightness adjustment when the acceleration sensor confirms that the device orientation has actually changed. This feedback loop eliminates misoperation interference while preserving automatic brightness control benefits.

The patent applies preliminary action by requiring the acceleration sensor to verify orientation change before executing brightness adjustment. Instead of immediately responding to light sensor detections, the system first checks whether the device orientation has genuinely changed through acceleration sensor data. This preliminary verification prevents unnecessary brightness fluctuations while maintaining angular adaptability when actual orientation changes occur.