Video Conversion Device Synchronizing Multi-Display Timing
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Solution Overview
Problem
Existing video display systems with multiple devices experience timing discrepancies due to different delay times, leading to discomfort and impaired immersion in multimedia shows or games, and require high-performance computers to synchronize video signals, increasing costs.
Innovation Solution
A video display system and method that employs a video conversion device with a processor and delay correction calculator to divide and adjust video signals for display devices with varying delay times, ensuring synchronized display timings by calculating and applying correction values based on detected delay amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video signals are converted and processed in real-time for multiple display devices using a high-performance computer, then display timing synchronization is achieved, but system cost increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing delay correction values for each display device based on their individual delay characteristics. Instead of performing complex real-time processing during video output, the system prepares correction data in advance that compensates for device-specific delays, enabling synchronized display without requiring high-performance real-time processing hardware
Solution Approach 2:
The patent uses copying by creating and storing correction value data that represents the delay characteristics of each display device. This correction data is then applied to video signals destined for each device, allowing the system to replicate the effect of complex real-time processing through pre-computed lookup tables rather than expensive hardware
2Device complexity
If video signals are output to multiple display devices without delay correction, then system complexity is reduced, but display timing difference increases causing discomfort
Solution Approach 1:
The patent applies parameter changes by adjusting the timing parameter of video signals based on pre-determined correction values specific to each display device. Instead of implementing complex synchronization control mechanisms, the system simply modifies the output timing parameter of each video signal according to stored correction data, achieving synchronization while maintaining low system complexity
Solution Approach 2:
The patent implements self-service by having each display device report its own delay characteristics to the video conversion device. The system then uses this self-provided information to automatically calculate and apply appropriate correction values, eliminating the need for external calibration or complex control systems
Data Source
AI summary
The video display system includes a plurality of display devices having mutually different display delay times and a video conversion device that divides an input integrated video signal into a plurality of video signals and respectively outputs the plurality of video signals to the plurality of display devices. At least one of the plurality of video signals is output in a delayed state to make a difference between display timings of the plurality of videos respectively displayed on the plurality of display devices substantially zero, based on the display delay times.