Magnetic Command Input Through Closed Device Cases

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Solution Overview

Problem

Device cases, such as folding wallet styles, hinder users' ability to quickly access and provide complex inputs to their devices, as they often secure the device in a way that makes it difficult to interact with the primary input mediums like touch screens or physical keyboards, and become awkward to hold when opened.

Innovation Solution

A method that detects changes in a magnetic field associated with the device using a sensor, allowing users to input commands by manipulating a magnet on a track attached to the case, which corresponds to known commands and performs the corresponding functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the device is secured in a case, then device protection and secure holding are improved, but user interaction with the device is hindered

Engineering Contradiction:
Improvedevice protectionVSAvoiduser interaction
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

A magnet is introduced as an intermediary object that mediates between the user and the device. The magnet interacts with the device's magnetic field to trigger commands without requiring direct physical contact with the device itself, thus maintaining device security in the case while enabling user interaction.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces traditional mechanical input methods (touch screen, physical keyboard, buttons) with a magnetic field-based interaction system. The magnet's movement through different positions generates magnetic field variations that are detected by the device's sensor, substituting mechanical contact with magnetic field manipulation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If the case is opened for access, then input access is improved, but device stability and secure holding deteriorate

Engineering Contradiction:
Improveinput accessVSAvoiddevice stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The magnet serves as a mediator that enables input access without requiring the case to be opened. By moving the magnet to different positions, users can interact with the device while it remains securely closed in the case, maintaining both accessibility and stability.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If traditional input methods are used, then input accuracy is improved, but interaction speed when case is closed deteriorates

Engineering Contradiction:
Improveinput accuracyVSAvoidinteraction speed
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent replaces slow mechanical processes (opening case, physically accessing inputs) with rapid magnetic field-based interaction. The magnet can be quickly moved between positions to generate commands, providing both speed and accuracy without requiring physical access to the device.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enables users to effectively provide inputs to their devices while they are secured in a case, enhancing interaction efficiency and accuracy by allowing command inputs through magnetic field manipulation.

Implementation Method 1

detecting, using a sensor of an information handling device, a change in a magnetic field associated with the information handling device

Methodology Applied
Scientific EffectMagnetic field detection: Magnetic Field

Data Source

PatentUS11614504B2Command provision via magnetic field variation
Publication Date: 2023.03.28 LENOVO SWITZERLAND INTERNATIONAL GMBH
  • US11614504B2 patent drawing
  • US11614504B2 patent drawing
  • US11614504B2 patent drawing

AI summary

One embodiment provides a method, including: detecting, using a sensor of an information handling device, a change in a magnetic field associated with the information handling device; determining, using a processor, whether the change in the magnetic field corresponds to a known command; and performing, responsive to determining that the change in the magnetic field corresponds to the known command, a function dictated by the known command. Other aspects are described and claimed.