Mobile Terminal Screen Brightness Control via Timeout
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Solution Overview
Problem
Mobile terminals consume increasing amounts of power due to their sophisticated features, necessitating either high-capacity batteries or power-efficient designs.
Innovation Solution
A method and device for controlling screen brightness in mobile terminals, reducing power consumption by maintaining a lower brightness level during idle states and increasing it only after a short timeout upon detection of events such as touch inputs or incoming calls, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If screen brightness is maintained at high level continuously, then display visibility is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic screen brightness control by transitioning between different brightness levels based on device state. The controller adjusts brightness from a first level (higher visibility) to a second level (lower power consumption) based on whether the device is in active or idle state, making the brightness characteristic adaptive rather than static.
Solution Approach 2:
The patent employs periodic brightness adjustment through timeout mechanisms. After detecting user inactivity for a predetermined timeout period, the system periodically transitions to lower brightness mode. This creates a rhythmic pattern of brightness changes that balances visibility needs with power conservation.
2Use of energy by moving object
If screen brightness is reduced during idle states, then power consumption is reduced, but user response time increases
Solution Approach 1:
The patent implements preliminary action by maintaining the screen at a first brightness level during active states so that when the user returns from an idle period, the display is already optimized for immediate visibility. The timeout mechanism prepares for the transition to lower brightness before complete inactivity sets in, reducing the impact on user response time.
Solution Approach 2:
The system dynamically changes the brightness parameter based on temporal context. By monitoring the duration of idle states and adjusting brightness accordingly, the system optimizes the balance between power savings and user experience, changing the brightness parameter only when the timeout threshold is exceeded.
Data Source
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AI summary
A method, system, and device for controlling screen brightness of a mobile terminal are disclosed. In one embodiment, a mobile terminal comprises a display unit, a sensing unit, and a controller configured to maintain a brightness of the display unit at a reduced level of screen brightness during a non-active state of the mobile terminal, and restore the brightness of the display unit to a normal level of screen brightness after a short timeout subsequent to a detection of an event configured to activate the mobile terminal via the sensing unit.