Multi-Screen Picture Synchronization Using Software Display Timing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current display picture synchronization methods rely on hardware connections, leading to high implementation costs and complex cabling, and there is a lack of effective software solutions for synchronous multi-screen display.

Innovation Solution

A software-based display picture synchronization method using frame drop information and clock synchronization to ensure synchronized display across multiple devices, avoiding asynchronization by managing frame display times and decoding delays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hardware connection method is used for picture frame transmission, then picture frame synchronization can be achieved, but implementation cost increases and cabling becomes complex

Engineering Contradiction:

Improvepicture frame synchronizationVSAvoidcabling complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical hardware connection system with a software-based synchronization system. Instead of using physical wired connections to transmit picture frames, the system uses software processes to manage frame timing and synchronization through virtual coordination between display devices, thereby eliminating complex cabling while maintaining synchronization reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a time management mechanism as an intermediary between picture frame transmission and display. This intermediary layer handles the synchronization logic by coordinating display times of picture frames across multiple devices, eliminating the need for direct hardware connections and complex cabling infrastructure

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If hardware connection method is used for picture frame transmission, then picture frame synchronization can be achieved, but implementation cost increases

Engineering Contradiction:

Improvepicture frame synchronizationVSAvoidimplementation cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces expensive hardware connection systems with cost-effective software-based synchronization. By using software processes to manage frame timing and coordination rather than physical hardware infrastructure, the system achieves synchronization at lower implementation cost while maintaining reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses virtual copying of timing information and frame data instead of physical duplication through hardware connections. By transmitting and synchronizing picture frames through software-based time coordination, the system eliminates the need for expensive physical duplication infrastructure while maintaining synchronization accuracy

Inventive Principle:

Principle #26Copying

3Device complexity

If software solution is used for picture frame synchronization, then implementation cost decreases and cabling simplifies, but picture frame asynchronization may occur

Engineering Contradiction:

Improvecabling complexityVSAvoidpicture frame synchronization

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent implements feedback mechanisms that monitor and adjust picture frame display timing in real-time. By continuously tracking frame transmission status and display timing, the system can detect and correct potential asynchronization issues, ensuring reliable synchronization while maintaining software-based simplicity

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent uses dynamic time management that adjusts display timing based on actual frame transmission conditions. The system dynamically coordinates picture frame display times across multiple devices, adapting to network conditions and device performance to prevent asynchronization while maintaining software-based implementation

Inventive Principle:

Principle #15Dynamics

4Ease of operation

If picture frame is displayed without checking display time capability, then display operation is simplified, but synchronous display cannot be achieved

Engineering Contradiction:

Improvedisplay operation simplicityVSAvoidsynchronous display

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent performs preliminary checks of display time capability before picture frame display operations. By pre-validating whether a device can display a frame at the required time, the system ensures synchronous display capability is maintained while keeping the overall operation simple through automated time management

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12530163B2Display picture synchronization method, system, and electronic device

Publication Date: 2026.01.20 HUAWEI TECH CO LTD

AI summary

A display picture synchronization method includes a source device that sends a first picture frame and a first specified display time corresponding to the first picture frame to each of the sink devices. If each of the sink devices successfully receives the first picture frame and determines that the first picture frame is capable of being displayed based on the first specified display time, each of the devices for performing picture frame synchronization display displays the first picture frame based on the first specified display time. Each of the devices for performing picture frame synchronization display does not display the first picture frame if a first sink device in the sink devices fails to receive the first picture frame or successfully receives the first picture frame but determines that the first picture frame is incapable of being displayed based on the first specified display time.