OLED Power Estimation via Color Histogram Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices with OLED display screens face challenges in accurately estimating power consumption due to varying energy requirements of different colored subpixels, making it difficult to provide users with accurate battery drain information and inform developers about power usage.
Innovation Solution
The implementation of circuits and methods that estimate power consumption by determining the content of images displayed, using color value counting and histogram calculations to generate average color values, which are then used to estimate power dissipation, and inform users and developers about battery life and usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If OLED display screens use different colored subpixels with different efficiency, then the display quality and color accuracy are improved, but the power consumption estimation becomes difficult and inaccurate
Solution Approach 1:
The patent segments the power consumption calculation by subpixel type (red, green, blue) and further by content characteristics (average color values, histogram distributions). This segmentation allows accurate tracking of power usage for each subpixel category, resolving the measurement difficulty caused by varying efficiencies of different colored subpixels.
Solution Approach 2:
The patent introduces multiple parameters to track power consumption: average color values per subpixel, histogram distributions of color frequencies, and content-dependent power factors. By changing from a single aggregate power measurement to multiple content-specific parameters, the system achieves precise power estimation despite varying subpixel efficiencies.
2Measurement precision
If the system tracks detailed color values and histograms for each subpixel, then power consumption estimation accuracy is improved, but the device complexity and computational requirements increase
Solution Approach 1:
The patent performs preliminary calculations of average color values and histogram distributions during the normal display operation. By pre-computing these content characteristics and storing them in buffers, the system reduces the complexity of real-time power estimation, as the heavy computational work is done in advance rather than during power measurement.
Solution Approach 2:
The patent introduces intermediary data structures (buffers storing average color values, histogram arrays, content descriptors) that mediate between the complex display content and the power estimation logic. These intermediaries simplify the final power calculation by pre-organizing the data in a form that directly maps to power consumption models.
Data Source
AI summary
Circuits, methods, and apparatus that may estimate the power being consumed by an OLED display screen of an electronic device, may provide further information about that power usage, may modify or change functions performed by the electronic device based on that power usage, and may inform an application's developer about the amount of power being used by the electronic device while the electronic device is running the application. One example may estimate the power being used by an OLED display screen of an electronic device by determining the content of images being displayed during a duration. The estimated power may then be presented to a user. The estimated power may be used in decisions to modify or change parameters of the screen or other device components.