Display Brightness Control Using Temperature-Based Power Thresholds
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Solution Overview
Problem
Existing displays cannot maintain high brightness in high-temperature environments due to reduced luminance settings, which are implemented to protect components from exceeding their temperature limits.
Innovation Solution
An electronic device with a temperature sensor, storage unit, and control element that uses a look-up table to adjust power consumption of light-emitting elements based on ambient temperature, allowing for dynamic luminance adjustments to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If luminance is reduced in high-temperature environments, then component temperature is controlled within limits, but display brightness is insufficient
Solution Approach 1:
The patent implements dynamic luminance adjustment by continuously monitoring ambient temperature and power consumption, then adaptively modifying display brightness in real-time. The control element dynamically selects from multiple luminance levels based on current thermal conditions, transforming the static display system into a dynamic one that responds to environmental changes.
Solution Approach 2:
The system changes the operating parameters of the display by adjusting luminance levels according to temperature thresholds. The control element modifies display parameters (brightness, power consumption) based on temperature readings, effectively using parameter changes to resolve the contradiction between thermal management and display performance.
2Reliability
If multiple temperature ranges are implemented with different luminance levels, then component protection is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-defining multiple temperature ranges and their corresponding luminance levels in a lookup table before operation. The control element simply queries this pre-prepared table based on current temperature, avoiding complex real-time calculations and reducing control system complexity while maintaining reliable component protection.
Solution Approach 2:
The system implements feedback by continuously monitoring ambient temperature and power consumption, comparing current values against predefined thresholds, and automatically adjusting luminance levels accordingly. This closed-loop feedback mechanism ensures component protection while maintaining relatively simple control logic through threshold-based decision making.
Data Source
AI summary
An electronic device includes a plurality of light-emitting elements, a temperature sensor, and a control element. The control element includes a storage unit, a comparison unit, and a first control unit. The storage unit stores a look-up table including different correspondences between different temperature ranges and different power thresholds. The comparison unit receives the first power consumption of the light-emitting elements, determines the predetermined power threshold in the different correspondences of the look-up table according to the ambient temperature, and compares the first power consumption with the predetermined power threshold to determine the second power consumption. The first power consumption is obtained by measuring the light-emitting elements. The first control unit drives the light-emitting elements according to the second power consumption.