Touch Screen State Control via Proximity Thresholds

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Solution Overview

Problem

Touch screens in devices like smartphones can become unstable due to false triggers from proximity sensors when placed in pockets or bags, leading to unintended state changes.

Innovation Solution

A method and device that detect whether the touch screen is in a preset state and determine if induction information from a suspended object reaches specific thresholds, controlling the screen to switch to that state if necessary, thereby preventing false triggers and maintaining stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the proximity sensor triggers anti-mistaken touch function when contacting pocket or bag surface, then false touches are prevented, but the smart phone becomes unstable

Engineering Contradiction:
Improveanti-mistaken touch functionVSAvoidsmart phone stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The system continuously monitors induction information from the proximity sensor and dynamically adjusts touch screen state based on real-time feedback. When induction information exceeds thresholds, the system switches to anti-mistaken touch mode; when thresholds are met, it returns to normal mode, creating a stable feedback loop that prevents erratic state changes

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent changes the operational parameters of the touch screen by switching between different preset states (normal state and anti-mistaken touch state) based on induction information thresholds. This parameter switching allows the system to adapt to different environmental conditions while maintaining stability through controlled state transitions

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the touch screen switches state based on proximity sensor detection, then false touches are avoided, but the touch screen becomes unstable when shaken or moved

Engineering Contradiction:
Improvefalse touch preventionVSAvoidtouch screen state stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The system performs preliminary detection of induction information before switching touch screen states. By evaluating whether induction information reaches preset thresholds before making state changes, the system prevents premature or erroneous state transitions that would occur with simple proximity-based triggering

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The continuous monitoring and threshold-based state switching creates a stable feedback mechanism that responds to genuine environmental changes while filtering out transient disturbances from shaking or movement, thereby maintaining touch screen stability during normal usage

Inventive Principle:
Principle #23Feedback

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

Ensures the touch screen remains in a stable state even when the device is shaken or moved, preventing unintended interactions and enhancing user experience.

Implementation Method 1

sensing a distance by a proximity sensor of a touch screen

Methodology Applied
Scientific EffectProximity sensing: Capacitance

Data Source

PatentUS10318069B2Method for controlling state of touch screen, and electronic device and medium for implementing the same
Publication Date: 2019.06.11 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • US10318069B2 patent drawing
  • US10318069B2 patent drawing
  • US10318069B2 patent drawing

AI summary

A method, an electronic device, and a medium for controlling a state of a touch screen are provided. The method includes: detecting whether the touch screen is in a first preset state; determining whether induction information of a suspended object reaches a first set of preset thresholds, if the touch screen is not in the first preset state; and controlling the touch screen to be switched from a current state to the first preset state, if the induction information reaches the first set of preset thresholds.