Interactive Cord with Integrated Light Sources and Capacitive Touch
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Solution Overview
Problem
Conventional in-line controls for cords, such as those used in headphones and household appliances, are prone to mechanical failure, corrosion, and limited expressiveness due to hardware-based designs, which can lead to bulkiness and increased costs.
Innovation Solution
An interactive cord with a fabric cover incorporating conductive threads for capacitive touchpoints and integrated light sources, allowing for touch input detection and feedback, eliminating the need for separate hardware controls and enhancing user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardware buttons are used for in-line controls, then control functionality is provided, but reliability deteriorates due to mechanical failure and corrosion
Solution Approach 1:
The patent replaces mechanical hardware buttons with capacitive touchpoints integrated into the fabric cover. The conductive threads woven into the fabric create capacitive sensing areas that detect touch input through electrical capacitance changes, eliminating mechanical moving parts that are prone to failure and corrosion.
Solution Approach 2:
The patent uses a fabric cover with conductive threads woven into it to create the control interface. This flexible fabric structure replaces rigid hardware buttons, providing a more durable and corrosion-resistant control mechanism that integrates seamlessly with the cord.
2Adaptability or versatility
If more control functions are added, then expressiveness improves, but device complexity increases due to more hardware requirements
Solution Approach 1:
The patent implements a capacitive touch interface where different touch patterns (single touch, double touch, long press, sliding gestures) on the same fabric surface can trigger multiple control functions. This allows one fabric cover with conductive threads to provide diverse control expressiveness without requiring separate hardware buttons for each function.
Solution Approach 2:
The patent uses variations in touch parameters (duration, position, sequence, pressure) detected by the capacitive sensors to differentiate between different control commands. This allows multiple functions to be controlled through a single interface by interpreting different touch patterns rather than requiring separate hardware controls.
3Ease of operation
If hardware controls are integrated into the cord, then control functionality is provided, but the cord becomes bulkier
Solution Approach 1:
The patent integrates control functionality directly into the fabric cover that already surrounds the cord. The conductive threads are woven into the existing fabric structure, adding minimal thickness while providing full control functionality. This maintains cord flexibility and aesthetics while enabling in-line controls.
4Ease of operation
If hardware controls are exposed to sweat and skin, then in-line control functionality is maintained, but reliability deteriorates due to corrosion and electrical shorts
Solution Approach 1:
The fabric cover acts as a protective barrier between the user's skin and the conductive threads. The fabric material is naturally resistant to sweat corrosion and can be treated for enhanced durability, protecting the conductive elements from direct exposure to moisture and bodily fluids while maintaining capacitive touch functionality.
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
The solution provides a durable, expressive, and cost-effective control mechanism that reduces bulkiness and corrosion risks, enabling advanced functionality through capacitive sensing and visual feedback.
Implementation Method 1
The fabric cover includes one or more conductive threads woven into the fabric cover to form one or more capacitive touchpoints which are configured to enable reception of touch input
Implementation Method 2
The fabric cover further includes one or more light sources. A controller can control the light sources to output light to visually indicate a position of the capacitive touchpoint on the fabric cover and/or to provide feedback by outputting light responsive to detecting touch input
Data Source
AI summary
This document describes an interactive cord with integrated light sources. An interactive cord includes a cable, a cover that covers the cable, and a plurality of light sources integrated into the cover. The cover includes capacitive touchpoints that enable reception of touch input that causes a change in capacitance to one or more conductive threads effective to trigger a function at a computing device. Different conductive threads can be used at different capacitive touchpoints to trigger different functions. The light sources are configured to indicate a position of a respective capacitive touchpoint on the cover.