Portable Navigation Device Ambient Light Display Adjustment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Portable navigation devices lack the ability to automatically adjust display brightness and color schemes in response to changing ambient lighting conditions, requiring user intervention which is often inconvenient and inefficient.

Innovation Solution

A navigation device equipped with a processor that monitors ambient lighting conditions using sensors and adjusts display settings, including backlight levels and color schemes, to optimize visibility and power consumption based on the current lighting environment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual brightness adjustment is implemented, then user control over display visibility is improved, but user convenience deteriorates due to frequent intervention requirements

Engineering Contradiction:

Improveuser controlVSAvoiduser intervention time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The navigation device automatically adjusts display brightness by detecting ambient lighting conditions through a sensor and processing the signal to determine appropriate backlight levels, eliminating the need for manual user adjustment and frequent intervention

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system continuously monitors ambient light levels via a light sensor and uses this feedback to dynamically adjust display brightness, creating a closed-loop control system that adapts to changing lighting conditions without user input

Inventive Principle:

Principle #23Feedback

2Illumination intensity

If high backlight levels are used, then display visibility in bright conditions is improved, but power consumption increases

Engineering Contradiction:

Improvedisplay visibilityVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The display brightness is dynamically adjusted based on real-time ambient lighting conditions detected by the sensor, allowing the backlight level to vary from high in bright environments to low in dark environments, optimizing both visibility and power consumption

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the backlight intensity parameter in response to ambient light level changes, automatically selecting appropriate brightness levels to maintain display visibility while minimizing power consumption in different lighting scenarios

Inventive Principle:

Principle #35Parameter changes

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

The solution provides automatic and seamless adjustments to display settings, enhancing user experience by maintaining optimal visibility and extending battery life without user intervention, while also allowing for user-selectable preferences for different lighting scenarios.

Implementation Method 1

a light sensor to detect current ambient lighting conditions

Methodology Applied

Scientific EffectPhotoelectric Effect: Photoelectric Effect

Data Source

PatentUS8954263B2Portable navigation device

Publication Date: 2015.02.10 TOMTOM NAVIGATION BV

AI summary

A navigation device is configured to allocate display setting such as color schemes and screen contents to at least one ambient lighting condition, monitors and evaluates a signal indicative of ambient lighting conditions and determines whether display settings for the current ambient lighting conditions are already in use and to change display settings so that they suit current ambient lighting conditions if needed.