Power Consumption Controller for Self-Luminous Displays
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Solution Overview
Problem
Self-luminous display devices face challenges in controlling power consumption, as existing techniques often result in image quality degradation by converting video signals even when they do not exceed the allowable power limit.
Innovation Solution
A power consumption controller comprising a power consumption calculation section, a status determination section, and a peak brightness control section that calculates power consumption in real time and controls peak brightness only when the limit is exceeded, using a simple system configuration to manage power usage effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If video signal conversion is applied to control power consumption, then power consumption is reduced, but image quality degrades
Solution Approach 1:
The patent changes the parameter being controlled from video signal conversion to peak brightness adjustment. By modifying the brightness parameter dynamically based on calculated power consumption levels, the system reduces power usage without degrading image quality through signal conversion. This is achieved by the peak brightness control section adjusting brightness based on power consumption calculation results.
Solution Approach 2:
The system performs self-monitoring and self-adjustment of power consumption through the power consumption calculation section that continuously calculates power usage based on displayed images, and automatically adjusts peak brightness through the peak brightness control section when limits are exceeded, eliminating the need for external intervention or frame memory storage.
2Use of energy by moving object
If frame memory is used to store video signals for power consumption estimation, then power consumption control is enabled, but device complexity increases
Solution Approach 1:
The patent extracts the essential function of power consumption control from the frame memory storage approach. Instead of storing entire video frames, the system only calculates power consumption from current display data and compares it against limits, removing the unnecessary frame memory component while maintaining effective power control through the power consumption calculation section and status determination section.
Solution Approach 2:
The power consumption calculation is segmented into discrete controllable components: the power consumption calculation section computes usage based on current images, the status determination section compares against limits, and the peak brightness control section applies adjustments only when needed. This segmentation eliminates the need for comprehensive frame storage while maintaining control capability.
3Use of energy by moving object
If continuous power consumption monitoring is implemented, then power consumption is kept within limits, but processing load increases
Solution Approach 1:
The system applies partial monitoring action by calculating power consumption continuously but only taking control action (brightness adjustment) when the power consumption exceeds the predetermined limit. The status determination section enables this selective action by comparing calculated power consumption against limits and triggering peak brightness control only when necessary, reducing unnecessary processing load while ensuring compliance.
Data Source
AI summary
A power consumption controller includes (a) a power consumption calculation section which sequentially calculates the power consumption level of a self-luminous display device based on a video signal input from the beginning of each frame up to the time of calculation, (b) a power consumption status determination section which determines whether the calculated power consumption level exceeds a reference value for comparison by constantly comparing the two levels. If this is the case, the same section detects the timing at which the power consumption exceeds the reference value for comparison and (c) a peak brightness control section which controls the peak brightness of the self-luminous display device if the power consumption level exceeds the reference value for comparison based on the detected timing.