Screen Sharing Wake-Up Control to Prevent Display Flicker

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Solution Overview

Problem

Existing terminal device control technologies face limitations in maintaining screen sharing and locking states simultaneously, leading to user experience issues and potential exposure of personal information when the device is left unattended.

Innovation Solution

A method and system that enables a terminal device to temporarily suspend screen capture and display functions upon inactivity, allowing for secure unlocking via a connected portable device based on proximity and authentication, ensuring seamless transitions without display flickering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If the terminal device maintains screen sharing function during idle period, then the screen sharing continuity is improved, but the security risk increases due to potential information exposure

Engineering Contradiction:

Improvescreen sharing continuityVSAvoidinformation exposure risk

Core Design Contradiction:

Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by making the screen capture function adaptable to different operational states. The system dynamically adjusts the screen sharing behavior based on whether the terminal is in an active or idle state, transitioning between capturing and non-capturing modes to balance continuity and security requirements

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements periodic action through the disable period mechanism. The screen capture function is periodically suspended during idle periods and then resumed when activity is detected, creating a rhythmic pattern of capture and non-capture that addresses both continuity and security concerns

Inventive Principle:

Principle #19Periodic action

2Speed

If the terminal device turns on display panel immediately upon wake-up signal, then the response speed is improved, but the screen flickering issue worsens

Engineering Contradiction:

Improvewake-up response speedVSAvoiddisplay stability

Core Design Contradiction:

SpeedVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action by performing the disable period operation before resuming screen capture. This preparatory step ensures that the display panel is fully activated and stable before the screen sharing function is re-enabled, preventing flickering while maintaining quick wake-up response

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements beforehand cushioning through the disable period mechanism that acts as a buffer between wake-up and screen capture resumption. This cushioning period allows the display system to stabilize before full operation resumes, preventing visual disturbances

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12511092B2Display system, terminal device and terminal device control method

Publication Date: 2025.12.30 SILICON MOTION INC

AI summary

A terminal device control method, comprising: performing, by a processor of a terminal device, a stream function to capture at least one part of a display screen of the terminal device, wherein the at least one part of the display screen is transmitted to an external display; when receiving a wake-up signal, the processor turning on a display panel of the terminal device to display the display screen; stopping, by the processor, performing the stream function during a disable period, so that the processor stops capturing the at least one part of the display screen; and after the disable period, resuming to perform the stream function to resume transmitting the at least one part of the display screen to the external display.