Stylus Input Adapter Fulcrum Mechanism for 3D Space Detection
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Solution Overview
Problem
Conventional styluses require contact with a surface to detect user input, limiting their functionality in three-dimensional space and not allowing for the detection of inputs without physical contact.
Innovation Solution
The integration of an adapter with a stylus that converts user input into detectable forces for the tip sensor, enabling input detection in open space and combined input capabilities when contacting a surface, using a fulcrum mechanism to convert input forces into axial forces detectable by the tip sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional stylus design is used, then the structure remains simple, but input detection is limited to surface contact only
Solution Approach 1:
The adapter enables the stylus to perform multiple functions: it can detect inputs in open space without surface contact, and also detect combined inputs when the stylus contacts a surface. This multi-functionality resolves the contradiction by expanding input detection capabilities while maintaining a relatively simple overall structure through modular adapter design.
Solution Approach 2:
The adapter acts as an intermediary component between the user and the tip sensor. It receives various user inputs (pressure, rotation, depression) and converts them into axial forces that the tip sensor can detect, thereby enabling versatile input detection without requiring complex integration into the stylus body.
2Ease of operation
If adapter with fulcrum mechanism is integrated, then input detection in open space is enabled, but device complexity increases
Solution Approach 1:
The fulcrum mechanism provides a mechanical solution to enable open space input detection. By using a simple fulcrum pivot point, the adapter converts lateral user inputs into axial forces detectable by the tip sensor, achieving ease of operation in open space without requiring complex electronic or mechanical systems.
3Measurement precision
If adapter is added to stylus, then input detection sensitivity is improved, but manufacturing complexity increases
Solution Approach 1:
The adapter is designed as a separate, modular component that can be manufactured independently and then attached to the stylus. This segmentation allows for specialized manufacturing of the adapter with its precision fulcrum mechanism, while the main stylus body remains simple to manufacture, thereby improving input detection sensitivity without significantly increasing overall manufacturing complexity.
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 the stylus to receive and record inputs without surface contact, enhancing user interaction in three-dimensional space and providing a more sensitive and responsive input detection system.
Implementation Method 1
The adapter can include a fulcrum to convert inputs into axial forces detectable by the tip sensor
Data Source
AI summary
An input device, such as a hand-held stylus, can be used to receive inputs and track motion of a user in three-dimensional space, for example during a drawings session. The tip sensor can detect contact with an object by receiving a force toward a body of the stylus. Inputs from the user can be applied to a tip sensor of the stylus via an adapter. The inputs provided via the adapter can be different from inputs applied by contact with an object. Accordingly, the stylus can interpret the user inputs to initiate, terminate, or modify characteristics of the drawing session.