Touch-Type Portable Terminal Auto-Focusing Indicator Adjustment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Users of touch type portable terminals may incorrectly identify the auto focusing area due to improper responses to changes in the view angle of the lens, leading to inaccurate focusing.

Innovation Solution

A touch type portable terminal is designed with a touch panel, a display unit, a coordinate calculator, a measured distance value detector, storage for an indicator, a camera module, and a controller that calculates and displays the correct auto focusing area by moving an indicator on the display in response to view angle changes, ensuring accurate focusing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the lens moves to perform auto focusing, then the focusing accuracy is improved, but the view angle changes causing the indicator position to become inaccurate

Engineering Contradiction:

Improvefocusing accuracyVSAvoidindicator position accuracy

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The system continuously monitors the view angle of the lens during auto focusing and uses this feedback information to calculate and adjust the indicator position on the display, ensuring the indicator remains accurately positioned despite lens movement

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system pre-calculates the relationship between lens position and view angle changes, and proactively adjusts the indicator position before the user can perceive any displacement, preventing the loss of position information

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If a touch panel is used to replace physical buttons, then the device complexity is reduced and ease of operation is improved, but the precision of identifying the touched area may be compromised

Engineering Contradiction:

Improveoperational simplicityVSAvoidtouched area identification precision

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The system replaces physical button presses with touch panel detection, using electrical field changes in the touch panel to identify touched areas, thereby eliminating mechanical components while maintaining precision through coordinate calculation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8867909B2Touch-type portable terminal

Publication Date: 2014.10.21 LG INNOTEK CO LTD

AI summary

A touch type portable terminal is disclosed, whereby a user is prevented from viewing a wrong auto focusing area by indicating an indicator in response to changes in view angle of lenses during auto focusing operation.