Display Frame Mixing With Transparency Synchronization
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Solution Overview
Problem
Existing electronic apparatuses with separate video and graphic processors often experience delays and mismatches in processing video and graphic signals, leading to distorted or mismatched images when overlapped on the screen.
Innovation Solution
A display apparatus with a main processor providing area information for video frames, a video processor outputting video frames, a graphic processor outputting graphic frames, and a mixer adjusting transparency based on generated transparency information to align and overlap video and graphic frames without distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate video processor and graphic processor are provided to process video signal and graphic signal respectively, then image quality is improved, but processing delay and signal mismatch occur causing distorted images
Solution Approach 1:
The patent introduces a mixer as an intermediary component that receives both video and graphic signals along with transparency information, and combines them into a single synchronized output signal. The mixer acts as a mediator that coordinates the timing and alignment of signals from separate video and graphic processors, preventing distortion while maintaining the benefits of separate processing paths for image quality.
2Productivity
If separate processing paths are used for video and graphic signals, then processing capability is enhanced, but timing mismatch and image distortion occur
Solution Approach 1:
The patent applies preliminary action by generating transparency information in advance based on video frame area information before the mixing process. This transparency information is prepared beforehand to guide the mixer in properly aligning and combining video and graphic signals, ensuring accurate image alignment while maintaining enhanced processing capability from separate processing paths.
3Adaptability or versatility
If video and graphic signals are overlapped on screen, then display functionality is enhanced, but mismatch and distortion occur due to separate processing
Solution Approach 1:
The patent implements feedback by using transparency information that is generated from video frame area information and fed back to the mixing process. This feedback mechanism ensures that the graphic signals are properly aligned with video signals in terms of timing and spatial positioning, enabling enhanced display functionality with overlapped content while preventing mismatch and distortion through continuous synchronization feedback.
Data Source
AI summary
A method performed by a display apparatus, includes: outputting, by a video processor, a video frame comprising a first area corresponding to area information for the video frame; outputting a graphic frame; generating transparency information corresponding to the area information of the video frame; providing the area information of the video frame and the generated transparency information; adjusting a transparency of a second area of the graphic frame based on the area information and the transparency information; and outputting an image overlapping the video frame and the graphic frame comprising the second area having the adjusted transparency.