Display Motion Interpolation Control for Reduced Motion Judder
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Solution Overview
Problem
Display devices experience video stuttering and motion tremors when playing videos with different frame rates, such as movies at 24 Hz on TVs set to 60 Hz, leading to discomfort due to varying degrees of motion judder.
Innovation Solution
A display device that adjusts the number of interpolation frames based on the video's properties to reduce motion shake, using a controller to determine and generate additional frames as needed to match the desired output frequency, considering the degree of motion shake in each scene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If motion processing is applied to convert video frequency from 24 Hz to 60 Hz, then video playback smoothness is improved, but motion judder and visual shaking increase causing viewer discomfort
Solution Approach 1:
The patent applies dynamics by making the interpolation frame generation process adaptive rather than static. The controller dynamically adjusts the number of interpolation frames based on motion magnitude detection in different video scenes. For high-motion scenes, fewer interpolation frames are generated to reduce visual shaking, while for low-motion scenes, more interpolation frames are generated to maintain playback smoothness. This dynamic adjustment resolves the contradiction between improving playback smoothness and reducing motion judder.
2Stability of the object's composition
If a fixed number of interpolation frames is generated for frequency conversion, then video output frequency consistency is improved, but visual quality deteriorates due to excessive shaking in high-motion scenes
Solution Approach 1:
The patent applies parameter changes by modifying the number of interpolation frames based on detected motion magnitude. The controller changes this critical parameter dynamically - reducing the number of interpolation frames in high-motion scenes to minimize visual shaking, and increasing them in low-motion scenes to maintain frequency consistency and playback smoothness. This parameter adaptation resolves the contradiction between maintaining frequency consistency and preserving visual quality.
3Object-affected harmful factors
If motion processing is enhanced to reduce motion shake, then visual comfort is improved, but video playback smoothness deteriorates due to insufficient interpolation frames
Solution Approach 1:
The patent applies local quality by treating different video scenes differently based on their motion characteristics. Instead of applying a uniform motion processing approach to the entire video, the controller analyzes motion magnitude in each scene and applies appropriate interpolation frame generation locally. High-motion scenes receive fewer interpolation frames to reduce shaking and improve visual comfort, while low-motion scenes receive more interpolation frames to maintain playback smoothness. This localized approach resolves the contradiction between visual comfort and playback smoothness.
Data Source
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AI summary
The present disclosure relates to a display device and a method for operating the same. The display device according to an embodiment of the present disclosure may include a display unit; an external device interface unit configured to receive a video having a first frequency from a first device; and a controller configured to: determine a number of interpolation frames generated to output an original video having a first frequency as a final video having a second frequency through the display unit based on the video having the first frequency, and generate interpolation frames as many as the determined number of interpolation frames, and change the number of interpolation frames based on whether a property of the original video satisfies a condition related to a degree of motion shake.