Display Apparatus Frame Synchronization via Identification Matching
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Solution Overview
Problem
In electronic apparatuses with separate processors for video and graphic signals, delays in one signal can cause mismatched or distorted images when mixed for display, leading to inconvenience for users.
Innovation Solution
A display apparatus with a main processor that identifies matching video and graphic frames based on assigned identification information, controls the processors to delay and synchronize the frames, and outputs them at a reference point in time set by a sync signal, ensuring proper alignment and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate processors are used for video and graphic signals to improve image quality, then image processing capability is improved, but signal synchronization is deteriorated causing mismatch and distortion
Solution Approach 1:
A main processor acts as an intermediary between the video processor and graphic processor. It assigns identification information to frames from both processors, identifies matching frames based on this information, and controls the timing of frame output to ensure synchronization. This mediator coordinates the independent operations of separate processors while maintaining signal alignment.
2Productivity
If separate processing paths are used for video and graphic signals, then processing efficiency is improved, but frame alignment is deteriorated causing boundary distortion
Solution Approach 1:
The main processor implements a feedback mechanism by assigning identification information to frames from both video and graphic processors, then using this information to identify matching frames. Based on this identification, it controls the timing of frame output to ensure proper alignment, creating a closed-loop system that maintains synchronization despite independent processing paths.
3Speed
If frames are output simultaneously from separate processors, then display speed is improved, but synchronization is deteriorated causing image mismatch
Solution Approach 1:
The main processor performs preliminary actions by assigning identification information to frames from both processors before the frames are output. It identifies matching frames based on this pre-assigned information and controls the timing of frame output in advance, ensuring that frames are synchronized when displayed while maintaining high display speed.
Data Source
AI summary
A display apparatus may include: a display; a video processor configured to process a video signal; a graphic processor configured to process a graphic signal; a mixer configured to mix a video corresponding to the video signal processed by the video processor and a graphic corresponding to the graphic signal processed by the graphic processor to be displayed together on the display; and a main processor configured to identify a video frame and a graphic frame, to which matching identification information is assigned, based on identification information assigned to a plurality of video frames of the video signal and identification information assigned to a plurality of graphic frames of the graphic signal in order of the respective frames, and control the video processor and/or the graphic processor to delay and output at least one of the identified video frame and the identified graphic frame to make the video of the identified video frame and the graphic of the identified graphic frame be displayed together on the display.