Wearable Display Motion Blur Reduction via Black Frame Insertion
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Solution Overview
Problem
Current wearable electronic devices, such as Head-Mounted Displays (HMDs), face challenges in enhancing picture quality, particularly in reducing motion blur and shadow effects, due to limitations in frame rate and screen technology, which affect user experience during fast-motion content.
Innovation Solution
The implementation of a Head-Mounted Theater (HMT) module that senses adaptive screen settings, including stereoscopic mode, user input, and device connection, to adjust display parameters like inserting black images or altering AMOLED drive clocks, thereby improving motion clarity and reducing shadow effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the frame rate is increased to reduce motion blur, then motion clarity is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent implements motion blur reduction by inserting black images periodically between display frames at specific timings (e.g., during horizontal retrace periods). This periodic insertion of black frames creates temporal separation that reduces motion blur without requiring continuous high frame rates, thereby avoiding increased device complexity while maintaining motion clarity.
2Measurement precision
If the frame rate is increased to reduce motion blur, then motion clarity is improved, but power consumption increases
Solution Approach 1:
The system reduces power consumption by periodically inserting black images only during specific intervals (horizontal retrace periods) rather than maintaining continuous high frame rates. This periodic approach reduces the overall energy demand while still achieving motion blur reduction through temporal frame separation.
Solution Approach 2:
The patent inserts black images in advance during horizontal retrace periods before the actual display content is rendered. This preliminary action prepares the display medium to reduce motion blur effects before they occur, allowing for lower overall power consumption while maintaining motion clarity.
3Measurement precision
If black images are inserted to reduce motion blur, then motion clarity is improved, but picture quality deteriorates due to shadow effects
Solution Approach 1:
The patent applies different quality treatments to different regions and timings of the display. Black images are inserted specifically during horizontal retrace periods rather than uniformly across all frames. This localized approach reduces motion blur in critical areas while minimizing the overall impact on picture quality and shadow effects.
Solution Approach 2:
The system inserts black images partially - only during specific horizontal retrace periods rather than in every frame. This partial action is sufficient to reduce motion blur effects while avoiding excessive black frame insertion that would cause noticeable shadow effects and degrade overall picture quality.
4Object-generated harmful factors
If display parameters are adjusted to reduce shadow effects, then picture quality is improved, but motion clarity may deteriorate
Solution Approach 1:
The patent optimizes multiple display parameters simultaneously - inserting black images during horizontal retrace periods, adjusting frame timing, and controlling display refresh rates. These coordinated parameter changes achieve a balance where shadow effects are minimized while motion clarity is maintained through proper temporal separation of frames.
Data Source
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AI summary
A display method for a display device is provided. The display method comprises activating a Head Mounted Theater (HMT) mode, the HMT mode activating a Head Mounted Theater (HMT) mode, the HMT mode displaying two images which are substantially same each other on first and second areas respectively, separated from each other, in a display area of the display device, and adjusting a display time, for displaying a black screen in the first and second areas, of a unit frame time when the HMT mode is activated.