Off-Plane Capacitive Touch Activation on E-Reader Housing
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Solution Overview
Problem
Conventional e-reader devices rely on mechanical buttons and switches for user input, which can wear out and break over time, and lack a sleek form factor due to the need for visible indicators, while also not intuitively guiding user input without visual cues.
Innovation Solution
A computing device with a touch-sensitive activation plane on its housing, featuring a surface with a distinct planar orientation that allows intuitive user input without the need for mechanical buttons or visual indicators, using capacitive sensors to detect taps and gestures for controlling the device's functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical buttons and switches are used for user input, then user input functionality is provided, but the device lacks durability due to wear and breakage over time
Solution Approach 1:
The patent replaces mechanical buttons and switches with a touch-sensitive activation plane that uses capacitive sensing technology. This eliminates moving mechanical parts that wear out, providing a durable input mechanism that detects user input through changes in electrical capacitance when a conductor (such as a finger) approaches or touches the surface.
2Shape
If mechanical buttons are used for user input, then input functionality is provided, but the device lacks a sleek form factor due to visible indicators
Solution Approach 1:
The patent creates a localized region on the housing with different electrical properties (capacitive characteristics) that distinguishes the activation plane from the rest of the housing. This allows the touch-sensitive area to be visually subtle while still providing tactile and electrical feedback to guide user interaction, maintaining a sleek appearance without sacrificing usability.
3Device complexity
If conventional buttons are used, then user input is detected, but visual cues are required which compromise the sleek design
Solution Approach 1:
The patent uses the housing itself as an intermediary element that serves dual purposes: it maintains the sleek visual design while simultaneously providing the input interface. The activation plane integrates sensing capabilities directly into the housing structure, eliminating the need for separate visual indicators and mechanical buttons, thereby achieving both aesthetic simplicity and functional clarity.
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 touch-sensitive activation plane enhances user interaction by providing durable and visually appealing input methods, guiding user input intuitively and enabling seamless control of e-reader functions, such as powering the device, launching applications, and navigating paginated content.
Implementation Method 1
the sensor being a capacitive sensor configured to detect changes in capacitance in response to proximity of a conductor to the activation plane
Data Source
AI summary
A computing device includes a housing and a display assembly having a screen. The housing at least partially circumvents the screen so that the screen is viewable. A touch sensor is provided with a portion of the housing having a different planar orientation than a remainder of the housing. For example, the touch sensor may be provided with a portion of the housing that is off-plane with the screen of the display assembly. A processor is provided within the housing to detect a first user interaction with the touch sensor, and to interpret the first user interaction as a first user input. The processor further executes one or more instructions in response to the first user input.