Image Synchronization Analysis Device for VR Display Channels

Solution Overview

Problem

Immersive virtual reality systems with multiple display channels often experience synchronization issues, leading to image shifts and discomfort for users due to desynchronization between graphics cards and display means, with no existing device capable of analyzing these shifts to determine their origin.

Innovation Solution

An analysis device comprising sensors and analysis means that detect image reception times across multiple display channels, allowing for precise quantification of time shifts and identification of synchronization problems, including the use of auxiliary signals to determine display delays and malfunction sources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If synchronization means are used to synchronize images on multiple display channels, then image synchronization is improved, but image shift and desynchronization problems still occur due to graphics card and display means malfunctions

Engineering Contradiction:

Improveimage synchronizationVSAvoidimage shift

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements a feedback mechanism by detecting the actual display timing of images on multiple display channels and comparing it with the expected synchronized timing. The system measures time shifts between display channels and generates diagnostic information about synchronization status, enabling identification of malfunctioning graphics cards or display means. This feedback loop allows the system to monitor and diagnose synchronization issues rather than merely attempting to prevent them.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces an intermediary diagnostic system that acts as a mediator between the display channels and the user. This intermediary device detects images displayed on each channel, measures their timing, and provides diagnostic information about synchronization status. The intermediary translates complex synchronization issues into analyzable data, enabling identification of the root cause without requiring direct modification of the graphics cards or display means.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple display channels are used to provide immersive virtual reality experience, then user immersion is improved, but synchronization problems between channels increase

Engineering Contradiction:

Improveimmersive experienceVSAvoidsynchronization stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the synchronization monitoring function into independent detection channels, with each display channel being monitored separately. The diagnostic system processes each channel independently, measuring image display timing for each display means individually. This segmentation allows the system to identify which specific channel is malfunctioning without affecting the operation of other channels, maintaining overall system versatility while improving synchronization reliability.

Inventive Principle:

Principle #1Segmentation

3Reliability

If synchronization means are implemented to coordinate graphics cards, then image timing is improved, but the origin of synchronization problems cannot be identified

Engineering Contradiction:

Improveimage timingVSAvoidmalfunction origin detection

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent implements a feedback mechanism by detecting the actual display timing of images on multiple display channels and comparing it with the expected synchronized timing. The system measures time shifts between display channels and generates diagnostic information about synchronization status, enabling identification of malfunctioning graphics cards or display means. This feedback loop allows the system to monitor and diagnose synchronization issues rather than merely attempting to prevent them.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces an intermediary diagnostic system that acts as a mediator between the display channels and the user. This intermediary device detects images displayed on each channel, measures their timing, and provides diagnostic information about synchronization status. The intermediary translates complex synchronization issues into analyzable data, enabling identification of the root cause without requiring direct modification of the graphics cards or display means.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3577541B1Device for analyzing the synchronization of images on different display paths

Publication Date: 2021.03.10 PSA AUTOMOBILES SA

Figure 1

AI summary

A device (DA) for analyzing a system (SI) comprising display means (PI1, EA1; PI2, EA2) responsible for displaying images, graphics cards (CG1, CG2) responsible for defining said images, and synchronization means (MS) for synchronizing the times of identical image definition by the graphics cards (CG1, CG2). This device (DA) comprises sensors (C1, C2) associated with display means (PI1, EA1; PI2, EA2) and generating a main signal representing a new image in case of detection of the display of one such new image by the associated display means, and analysis means (MA) responsible for determining a first time of reception of each of the main signals, then, when the first times of reception determined are representative of a same new image, determining a first time difference between said first times of reception determined.