Display Brightness Control via Illuminance Verification

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Solution Overview

Problem

Existing display systems face inefficiencies in automatically adjusting screen brightness based on ambient illumination, often resulting in delayed or inappropriate brightness adjustments due to the time difference between detecting illumination state changes and responding with brightness control commands.

Innovation Solution

A system and method that utilize an illuminance sensor to detect changes in ambient light levels, confirm the reliability of these changes, and adjust screen brightness accordingly by requesting and verifying measurement data, ensuring that brightness adjustments are only made when the illumination state is consistently altered within a defined range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display system automatically adjusts screen brightness based on illuminance sensor detection, then the adaptability to ambient illumination is improved, but the reliability of brightness control deteriorates due to delayed or inappropriate adjustments

Engineering Contradiction:

Improveadaptability to ambient illuminationVSAvoidreliability of brightness control

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary actions by requesting measurement data from the illuminance sensor and confirming whether the detected illumination state change is reliable before executing brightness adjustment. This preliminary verification step prevents inappropriate adjustments while maintaining timely response to valid illumination changes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by continuously monitoring illumination states, comparing detected changes against expected patterns, and adjusting brightness based on confirmed valid events. The feedback mechanism ensures that brightness adjustments are made reliably only when genuine illumination changes are detected, avoiding false adjustments.

Inventive Principle:

Principle #23Feedback

2Reliability

If the system requests and verifies measurement data before adjusting brightness, then the reliability of brightness control is improved, but the response time and productivity deteriorate

Engineering Contradiction:

Improvereliability of brightness controlVSAvoidresponse speed of brightness adjustment

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system applies partial verification by requesting measurement data only when illumination state changes are detected, rather than continuously verifying all potential adjustments. This selective approach maintains reliability for necessary adjustments while minimizing the impact on response speed and system productivity.

Inventive Principle:

Principle #16Partial or excessive action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach enhances the reliability of screen brightness control by precisely reacting to ambient illuminance variations, preventing unnecessary brightness adjustments and improving the accuracy of display brightness management.

Implementation Method 1

displays are equipped with illuminance sensors. Illuminance sensors detect at least one light component, such as infrared

Methodology Applied

Scientific EffectIlluminance detection: Photoelectric Effect

Data Source

PatentUS9240161B2System and display for controlling display

Publication Date: 2016.01.19 SAMSUNG ELECTRONICS CO LTD

AI summary

A system and method that adjusts a screen brightness of a display, considering an ambient illumination state, are provided. The method includes receiving a signal, corresponding to an event related to an illumination state alteration, from a sensor, confirming the event, and adjusting, if the event is confirmed, a screen brightness of a display unit in accordance with the event.