Video Output Setting Verification for Display Compatibility

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Solution Overview

Problem

Existing video display control devices struggle to output video signals that are compatible with the specific display settings of connected devices, leading to potential display issues due to variations in synchronization signal specifications and allowable ranges among different manufacturers.

Innovation Solution

A video display control device that includes processors to extract and verify video output settings compatible with the display device, using methods like Extended Display Identification Data (EDID) to ensure proper display by testing each candidate setting before allowing user selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the video display control device outputs a video signal conforming to the video output setting supported by the display device, then the video signal specifications are met, but the display device may still not be able to display the video properly due to deviations in synchronization signal specifications

Engineering Contradiction:

Improvevideo signal specification conformityVSAvoiddisplay compatibility

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The system performs preliminary verification by outputting test video signals with different synchronization signal specifications before actual video playback. This preliminary action identifies the compatible specification range of the display device, ensuring that subsequent video output uses verified compatible settings rather than relying solely on standard specifications.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes synchronization signal parameters (such as horizontal/vertical synchronization frequencies and pulse widths) to find the optimal set of parameters that the display device can properly process. By adjusting these parameters within allowable ranges, the system adapts the video signal to match the specific characteristics of the connected display device.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If the video display control device supports multiple video output settings, then versatility is improved, but complexity of determining compatible settings increases

Engineering Contradiction:

Improvevideo output setting supportVSAvoidsetting verification process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system segments the verification process into distinct steps: first identifying supported video output settings from display device information, then separately verifying synchronization signal specifications for each setting. This segmentation allows the complex verification process to be broken down into manageable, systematic steps that can be automated.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system uses feedback from the display device's response to test signals to automatically determine compatible settings. By monitoring whether the display device properly processes each test signal, the system receives feedback that guides the selection of appropriate video output settings, eliminating the need for manual configuration complexity.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20260031062A1Video display control device, control method therefor, and program

Publication Date: 2026.01.29 SONY INTERACTIVE ENTERTAINMENT LLC

AI summary

Provided is a video display control device that extracts one or more candidates for a video output setting with which a connected display device is able to perform display, and outputs a video signal based on the video output setting of the candidates to verify whether or not the display device is able to perform display, for each of the one or more candidates.