Handheld Device Motion Path Character Input

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Solution Overview

Problem

Current character input methods on handheld electronic devices, such as keyboards and screen handwriting, are inconvenient and require users to learn specific arrangements, making them difficult to use, especially in environments like bumpy transportation.

Innovation Solution

A character input method that senses the motion path of a handheld device, transforms it into a stroke path, and recognizes the input character without the need for a keyboard, using a motion sensing unit, processing unit, and display unit, allowing one-handed operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a keyboard is used for character input, then input speed and functionality are improved, but ease of operation deteriorates due to the need to learn keyboard arrangements and operations

Engineering Contradiction:
Improveinput speedVSAvoidease of operation
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical keyboard system with a motion sensing system that detects the movement trajectory of the handheld device itself. Instead of requiring physical key presses on a QWERTY keyboard, the system senses the natural motion path of holding and moving the device to input characters, thereby eliminating the need to learn keyboard arrangements while maintaining input functionality

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

Solution Approach 2:

The handheld device serves itself as the input tool by utilizing its own motion trajectory for character input. The device's natural movement through space during normal handling is converted into input signals, eliminating the need for separate input tools like keyboards or handwriting pens, and making the device intuitive to operate without learning curves

Inventive Principle:
Principle #25Self-service

2Ease of operation

If screen handwriting is used for character input, then ease of operation is improved, but reliability deteriorates in bumpy or crowded mass transportation vehicles due to the need to hold the device with one hand and handwriting pen with the other

Engineering Contradiction:
Improveease of operationVSAvoidreliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent merges the input tool (handwriting pen) with the handheld device itself by using the device's motion sensing capabilities. The natural movement of the device during transport is utilized for input purposes, eliminating the need to hold separate tools and ensuring reliable operation even in unstable environments like moving vehicles

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the manual handwriting pen system with an automated motion sensing system that detects device movement. This substitution eliminates the need for precise manual control required in screen handwriting, allowing reliable character input even when the device is moving or being held in one hand during transport

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 input characters without a keyboard, reducing the need for learning input methods and improving convenience, especially in challenging environments, while being cost-effective and appealing to various user groups.

Implementation Method 1

a motion sensing unit, sensing a motion path of the handheld electronic device

Methodology Applied
Scientific EffectMotion sensing: Accelerometer

Data Source

PatentUS8405642B2Character input method and handheld electronic device
Publication Date: 2013.03.26 INVECTEC APPLIANCES CORPORATION
  • US8405642B2 patent drawing
  • US8405642B2 patent drawing
  • US8405642B2 patent drawing

AI summary

A character input method applicable to a handheld electronic device is provided. The character input method includes the following steps. Firstly, a motion path of the handheld electronic device is sensed. Next, the motion path is transformed into a stroke path. Afterward, an input character corresponding to the stroke path is recognized.