Mobile Terminal Display Brightness Adjustment During Camera Startup

The patent applies preliminary anti-action by increasing the display screen brightness before and during the lens convergence process. By preemptively raising the brightness level, the patent counteracts the harmful effect of green or purple flashes that would otherwise appear around the preview image during camera startup. This preventive measure eliminates the visual artifact before it can degrade the user experience.

The patent applies periodic action by increasing the display screen brightness only during the specific convergence time period required for lens rolling off, rather than maintaining high brightness continuously. The brightness is restored to the original level after the convergence process completes. This time-limited approach ensures preview image quality during the critical startup phase while minimizing unnecessary energy consumption.

The patent applies feedback by using the predetermined convergence time as a trigger to automatically control the brightness adjustment. The system receives the convergence time parameter, uses it to determine the exact duration for which brightness should be increased, and automatically restores brightness after this period. This feedback-based automatic control eliminates the need for complex user interfaces or manual adjustments, simplifying the control mechanism while improving visual experience.