Wearable Display Foreground Adaptation for Visibility and Power
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Solution Overview
Problem
Wearable display devices face challenges in enhancing user experience by ensuring image visibility over varying background colors and brightness levels, while also optimizing power usage and reducing processing power consumption.
Innovation Solution
The wearable device captures image data of the foreground using a front view sensor, determines its characteristics, and adjusts display characteristics such as color brightness and contrast to make the displayed image distinguishable from the background, and conserves power by dynamically adjusting brightness based on user eye detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display continuously adjusts brightness and color to match foreground conditions, then image visibility is improved, but power consumption increases
Solution Approach 1:
The display adjusts its characteristics periodically based on detected changes in foreground conditions rather than continuously, reducing power consumption while maintaining visibility. The system monitors for changes in foreground color or brightness and only adjusts display parameters when such changes are detected.
Solution Approach 2:
The system uses a sensor to detect foreground conditions and provides feedback to the display controller, which then adjusts display characteristics accordingly. This closed-loop feedback mechanism ensures optimal visibility while avoiding unnecessary adjustments that would waste power.
2Loss of information
If the display adjusts characteristics based on foreground conditions, then image distinguishability is improved, but processing power consumption increases
Solution Approach 1:
The system uses the existing foreground sensor data already captured for other purposes (such as augmented reality overlay generation) to determine display adjustment parameters, rather than requiring separate processing. The display controller directly uses the sensor's foreground color and brightness information to adjust display characteristics.
Solution Approach 2:
The patent combines the foreground detection function with the display adjustment function, using the same sensor data for both augmented reality content generation and display parameter control. This merging of functions eliminates redundant processing and reduces overall computational load.
3Illumination intensity
If the display maintains high brightness for visibility, then image visibility is improved, but power consumption increases
Solution Approach 1:
The display brightness is made dynamic rather than static, automatically adjusting based on detected foreground conditions. When the foreground is bright, the display reduces its brightness; when the foreground is dark, the display increases brightness. This dynamic adaptation maintains visibility while minimizing power consumption.
Solution Approach 2:
The system changes display parameters (brightness, color temperature) based on detected foreground conditions. By adjusting these parameters dynamically, the display maintains optimal contrast and visibility across varying environmental conditions without requiring constant high brightness output.
Data Source
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AI summary
A method, an apparatus, and a computer program product for managing a display device are provided. The apparatus may be a wearable device. The apparatus acquires data associated with a foreground corresponding to an image displayed on a display of the wearable device. The apparatus determines an image characteristic of the foreground based on the acquired data. The apparatus detects a change in the image displayed on the display. The apparatus adjusts, upon the detection of the change in the image, a display characteristic of the image based on the image characteristic of the foreground and the change in the image.