Passive Stylus with Magnet Chamber for Signal Generation
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Solution Overview
Problem
The increasing complexity and cost of manufacturing styluses with internal components such as circuits and batteries make them expensive and inefficient, necessitating a cost-effective solution for a stylus with an engageable member like a button or deflectable tip that can be easily and efficiently operated.
Innovation Solution
A stylus design that includes a main body with an engagement member, such as a moveable button or deflectable tip, which alters a mechanical relationship to generate a signal detected by a magnetometer or other detector, allowing the device to perform actions without internal electronics or batteries, using a magnet that moves within a magnet chamber or connects electrical contacts upon engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stylus includes internal components such as circuits and batteries, then the stylus can generate signals and perform actions, but the manufacturing cost and complexity increase
Solution Approach 1:
The patent extracts the power source and signal processing functions from the stylus itself, relying instead on the device's detector to provide power and process signals. The stylus is reduced to essential mechanical components (engagement member, magnet, mechanical link) that interact with the device's detection system, eliminating batteries and complex circuits while maintaining signal generation capability
Solution Approach 2:
The patent introduces a magnet as an intermediary element that transmits mechanical engagement information to the device's magnetometer detector. The magnet serves as a passive mediator that converts mechanical button engagement into detectable magnetic field changes without requiring active electronics or power sources in the stylus
2Reliability
If a stylus includes internal components such as circuits and batteries, then the stylus can generate signals and perform actions, but the manufacturing cost increases
Solution Approach 1:
The patent extracts the power source and signal processing functions from the stylus itself, relying instead on the device's detector to provide power and process signals. The stylus is reduced to essential mechanical components (engagement member, magnet, mechanical link) that interact with the device's detection system, eliminating batteries and complex circuits while maintaining signal generation capability
Solution Approach 2:
The patent adopts a minimalist approach using inexpensive, simple components that can be easily manufactured and replaced if needed. The stylus uses basic mechanical parts and a magnet rather than expensive electronics, making it cost-effective and suitable for mass production
3Ease of operation
If the engagement member is engaged by a user, then a signal is generated, but the mechanical relationship must be altered to detect the engagement
Solution Approach 1:
The patent replaces complex mechanical engagement detection mechanisms with a magnetic field-based detection system. Instead of using mechanical switches, contacts, or sensors within the stylus, the engagement member's movement is translated into magnetic field changes that are detected by the device's magnetometer, simplifying the stylus's mechanical structure
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
This solution provides a cost-effective, passive stylus that can perform actions like clicks and drags without electronics or batteries, reducing manufacturing costs and complexity while maintaining functionality.
Implementation Method 1
The stylus generates a signal in response to the altered mechanical relationship. The detector detects the signal generated by the stylus, and the CPU performs an action in response to detection of the signal. The detector may include a magnetometer that detects the signal as a characteristic of a magnetic field.
Implementation Method 2
The stylus may include a biasing mechanism that returns the magnet to an at-rest position in response to disengagement of the engagement member.
Data Source
AI summary
A system and method may include a device including a user interface, a detector, and a central processing unit (CPU) in communication with the detector. The CPU controls operation of the device. A stylus is used to input data with respect to the device. The stylus may include a main body and an engagement member operatively coupled to the main body. The engagement member alters a mechanical relationship within the main body in response to engagement by a user. The stylus generates a signal in response to the altered mechanical relationship within the main body. The detector detects the signal generated by the stylus. The CPU performs an action in response to detection of the signal.