Portable Terminal Backlight Control for Battery Conservation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional portable terminals with backlight functions consume unnecessary battery power due to fixed brightness settings, which may not suit users' needs, especially those with low visual acuity in low illumination environments.

Innovation Solution

A method and device for controlling backlight brightness in portable terminals, allowing users to select from preset steps and adjust brightness levels using a key input unit, with a control unit regulating the backlight accordingly, reducing battery consumption and improving usability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the backlight is turned on at a predetermined brightness determined during manufacturing, then the display is visible, but battery is unnecessarily consumed in low illumination environments

Engineering Contradiction:

Improvebacklight brightnessVSAvoidbattery consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The backlight brightness is changed from a fixed predetermined value to a dynamically adjustable value. The control unit allows users to select from multiple preset brightness steps and adjust the backlight intensity according to actual environmental lighting conditions, thereby reducing energy consumption when high brightness is not needed.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The backlight brightness parameter is changed from a single fixed value to multiple adjustable preset values. The memory stores multiple backlight brightness values corresponding to different steps, and the control unit retrieves and applies the appropriate brightness level based on user selection, enabling adaptation to different lighting environments.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If the backlight brightness is increased to help users with weak visual acuity, then usability is improved, but battery consumption increases

Engineering Contradiction:

Improveusability for users with weak visual acuityVSAvoidbattery consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The system provides dynamic backlight adjustment with multiple preset brightness steps, allowing users with weak visual acuity to select higher brightness levels when needed. The adjustability ensures that brightness can be optimized for individual user requirements without unnecessarily consuming battery power at lower brightness levels.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Multiple backlight brightness parameter values are stored in memory corresponding to different steps. Users can select from these preset values to find the optimal brightness for their visual needs, balancing usability improvement with energy conservation.

Inventive Principle:

Principle #35Parameter changes

3Use of energy by moving object

If the backlight brightness is reduced to save battery, then energy consumption is reduced, but users with weak visual acuity may have difficulty seeing the display

Engineering Contradiction:

Improvebattery consumptionVSAvoidvisibility for users with weak visual acuity

Core Design Contradiction:

Use of energy by moving objectVSEase of operation

Solution Approach 1:

The backlight system transitions from a fixed brightness level to a dynamically adjustable system with multiple preset steps. This allows the brightness to be adapted to match both energy conservation needs and individual user visual requirements, ensuring adequate visibility when higher brightness is selected.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system stores multiple backlight brightness parameter values in memory and allows users to select from different steps. This provides a range of brightness options that can be optimized for both energy efficiency and user visibility needs.

Inventive Principle:

Principle #35Parameter changes

4Ease of manufacture

If a fixed backlight brightness is used, then the device is simple to manufacture, but it cannot adapt to different lighting environments or user needs

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidadaptation to different lighting environments

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The invention introduces multiple preset backlight brightness parameters stored in memory, allowing the system to adapt to different lighting environments and user needs. The control unit retrieves and applies the appropriate brightness level based on user selection, providing environmental adaptability while maintaining a relatively simple manufacturing process.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9318074B2Portable terminal capable of controlling backlight and method for controlling backlight thereof

Publication Date: 2016.04.19 SAMSUNG ELECTRONICS CO LTD

AI summary

Disclosed is a method for controlling a backlight of a portable terminal, which includes the steps of storing preset backlight brightness values so as to correspond to the backlight brightness values to backlight steps, detecting a backlight brightness value stored so as to correspond to the backlight step required by a user in backlight regulation mode, and regulating the backlight brightness according to the detected backlight brightness value. Further, since the present invention can regulate the backlight brightness at night, the illumination intensity of which is low, the consumption of the battery can be reduced.