Head-Mounted Display Upper Limb Motion Character Input

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Solution Overview

Problem

Existing wearable devices with head-mounted displays lack intuitive and efficient methods for user interaction, particularly for selecting and manipulating character inputs, relying on complex gestures or cumbersome controls.

Innovation Solution

A wearable device with a head-mounted display unit, a detector for upper limb recognition, and a controller that executes character selection and type changing processes based on specific body motions, such as approaching or separating fingers, allowing for simple and intuitive input operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If complex gestures or cumbersome controls are used for character input, then character selection and manipulation can be achieved, but ease of operation deteriorates

Engineering Contradiction:

Improveease of character inputVSAvoidgesture complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system uses the user's own body motions to directly control character input operations. The detector captures natural upper limb movements, and the controller automatically interprets these motions as specific commands (character selection, deletion, type changing), eliminating the need for separate control interfaces or complex gesture recognition systems.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanical control interfaces (buttons, keyboards, complex gesture recognition) with a motion detection system that captures upper limb movements and converts them directly into input commands. This substitution simplifies the interaction mechanism while maintaining full character input functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If traditional control methods are used, then character input functionality is provided, but productivity deteriorates due to cumbersome operations

Engineering Contradiction:

Improveinput efficiencyVSAvoidtime for character input

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The system performs preliminary detection and interpretation of upper limb motions to prepare character input commands in advance. By continuously monitoring detector data and pre-processing motion patterns, the system readyes commands before they are fully executed, reducing latency and improving input speed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The controller continuously processes detector output data to maintain an ongoing stream of character input operations. Rather than discrete, interrupted interactions, the system sustains continuous motion detection and command generation, allowing users to input characters fluidly without breaking the interaction flow.

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS10551932B2Wearable device, control method, and control program

Publication Date: 2020.02.04 KYOCERA CORP

AI summary

A wearable device according to an example of embodiments includes a display unit configured to display characters, a detector configured to detect a user's upper limb existing in a real space, and a controller. When a first body motion of allowing one part and the other part of the upper limb to approach each other is detected from a detection result of the detector, the controller executes a character selection process of selecting the characters. The wearable device is attachable to the head.