Electronic Device Threshold Control for Press Detection

Solution Overview

Problem

Conventional electronic devices that detect presses in multiple stages impose a higher burden on users, as they require larger presses for higher stages, and setting smaller thresholds at even intervals can lead to unintentional detection of multiple stages with light touches, causing user discomfort and malfunctions.

Innovation Solution

The electronic device employs a control unit that sets thresholds in stages such that the difference between them gradually decreases as the press data increases or decreases, allowing for more precise detection and reducing user burden and malfunctions by adjusting thresholds based on the number of stages and predetermined values for the first or highest/lowest stages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If thresholds for multiple press stages are set at even intervals with smaller values, then the burden on the user is reduced, but unintentional light touches may concurrently detect multiple stages causing malfunctions

Engineering Contradiction:

Improveuser burdenVSAvoiddetection accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies local quality by making the threshold intervals non-uniform: larger intervals at lower press stages and smaller intervals at higher press stages. This localized adjustment of threshold spacing allows light touches to be distinguished from intentional presses at each stage, preventing accidental multi-stage detection while maintaining ease of operation.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements dynamics by making the threshold intervals adaptive rather than static. The interval between thresholds changes depending on the current press stage - wider at lower stages and narrower at higher stages. This dynamic adjustment optimizes both user burden and detection accuracy across different operating conditions.

Inventive Principle:

Principle #15Dynamics

2Reliability

If thresholds are set with larger intervals to prevent unintentional detection, then reliability is improved, but the burden on the user increases

Engineering Contradiction:

Improvedetection accuracyVSAvoiduser burden

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent applies local quality by making the threshold intervals non-uniform: larger intervals at lower press stages and smaller intervals at higher press stages. This localized adjustment of threshold spacing allows light touches to be distinguished from intentional presses at each stage, preventing accidental multi-stage detection while maintaining ease of operation.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements dynamics by making the threshold intervals adaptive rather than static. The interval between thresholds changes depending on the current press stage - wider at lower stages and narrower at higher stages. This dynamic adjustment optimizes both user burden and detection accuracy across different operating conditions.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS9715288B2Electronic device

Publication Date: 2017.07.25 KYOCERA CORP

AI summary

The electronic device includes a control unit 10 configured to set in stages a plurality of thresholds which relate to the data based on press and cause a predetermined processing to be executed. The control unit 10 sets the thresholds such that, as the data based on press increases, the difference between thresholds gradually decreases.