Display Burn-In Prevention via Sensor-Driven Periodic Shutdown

Solution Overview

Problem

Display apparatuses face burn-in issues when continuously showing the same content for an extended period, leading to afterimages or habituation, which can affect later displays.

Innovation Solution

A display apparatus with a sensor to detect user usage and a processor that sets a burn-in prevention state by temporarily turning off the display during non-use periods, adjusting these periods based on detected usage patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of stationary object

If the display continuously shows the same content for a long period, then the display functionality is maintained, but burn-in occurs causing afterimages or habituation

Engineering Contradiction:

Improvecontinuous display durationVSAvoidburn-in

Core Design Contradiction:

Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The display apparatus implements periodic action by automatically turning off the display during predetermined time periods (such as nighttime hours) when no user input is detected. This periodic interruption prevents continuous static display content from causing burn-in while maintaining display functionality during active use periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system employs feedback mechanisms where the processor monitors user input signals and adjusts display operation accordingly. When no input is detected during a set period, the system feedbacks by activating the power supply switch to turn off the display, thereby preventing burn-in based on actual usage patterns.

Inventive Principle:

Principle #23Feedback

2Object-affected harmful factors

If the display is turned off during non-use periods, then burn-in is prevented, but display continuity is interrupted

Engineering Contradiction:

Improveburn-in preventionVSAvoiddisplay continuity

Core Design Contradiction:

Object-affected harmful factorsVSDuration of action of stationary object

Solution Approach 1:

The display apparatus dynamically adjusts its operation state based on detected user activity. The system transitions between on and off states according to real-time input detection, creating a flexible display continuity that prevents burn-in during inactive periods while maintaining responsiveness during active use.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system performs self-service by automatically detecting user input and controlling display power state without manual intervention. The processor monitors input signals and autonomously decides when to turn the display on or off, balancing burn-in prevention with display continuity based on actual usage patterns.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If the display remains on continuously, then user convenience is maintained, but power consumption increases

Engineering Contradiction:

Improveuser convenienceVSAvoidpower consumption

Core Design Contradiction:

Ease of operationVSUse of energy by stationary object

Solution Approach 1:

The display apparatus implements periodic action by automatically turning off the display during predetermined time periods (such as nighttime hours) when no user input is detected. This periodic interruption prevents continuous static display content from causing burn-in while maintaining display functionality during active use periods.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system employs feedback mechanisms where the processor monitors user input signals and adjusts display operation accordingly. When no input is detected during a set period, the system feedbacks by activating the power supply switch to turn off the display, thereby preventing burn-in based on actual usage patterns.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11402896B2Display apparatus and display action control method

Publication Date: 2022.08.02 CASIO COMPUTER CO LTD

AI summary

A display apparatus includes a display which performs digital display; a sensor which detects use of the display apparatus by a user; and at least one processor. The processor controls the display to set a digital display to be in a burn-in prevention state in a first time period. When the sensor detects use in a second time period including the first time period, the processor stops the burn-in prevention state and changes data regarding setting of the first time period.