Deformable Housing Operation Input via Piezoelectric Detection
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Solution Overview
Problem
Existing electronic devices that rely on mechanical key input units or touch panels require users to check the operation position, leading to inefficiencies and inaccuracies, especially when operated quickly or in confined spaces, and existing sensor-based input methods struggle to distinguish between intended and unintended motions.
Innovation Solution
An electronic device with a deformable exterior housing that uses a deformation detecting unit and operation determining unit to register and respond to specific deformation patterns, allowing users to operate the device by applying external forces without needing to check the operation position, utilizing a piezoelectric film for precise deformation detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical key input units or touch panels are used, then the device can be operated, but the user needs to check the operation position which increases operation time and may cause mistakes
Solution Approach 1:
The exterior housing performs self-service by automatically indicating the operation position through its own deformation. When the user applies force to any part of the exterior, the housing itself deforms to show where the force was applied, eliminating the need for separate visual indicators and allowing the user to operate the device without checking operation position.
Solution Approach 2:
The patent uses deformation (change in shape) of the exterior housing as a visual feedback mechanism. The deformation acts like a color change indicator, showing the user exactly where their force was applied and what operation was detected, enabling intuitive operation without needing to refer to a separate display or indicator system.
2Ease of operation
If angular velocity sensors or acceleration sensors are provided to detect tapping or shaking operations, then operation input without checking position is enabled, but it becomes difficult to distinguish between intentional operations and unintentional motions
Solution Approach 1:
The exterior housing serves as an intermediary between the user's input force and the detection system. Instead of directly measuring motion with sensors, the force is first transmitted through the exterior housing which deforms in response. This intermediary mechanism filters out unwanted motions and only triggers detection when actual intentional pressing occurs, solving the false detection problem.
Solution Approach 2:
The patent replaces electronic sensor-based detection (angular velocity, acceleration) with a mechanical detection system. The deformation detecting unit measures physical deformation of the exterior housing caused by user pressure, providing more reliable and intentional operation detection compared to motion sensors that can be triggered by accidental bumps or vibrations.
3Adaptability or versatility
If a touch screen is provided to detect relative motions of fingers, then operation input is enabled, but the user needs to grip the device with an irregular hand shape to place multiple fingers on the screen
Solution Approach 1:
The patent segments the exterior housing into multiple independent detection regions. Each region can detect deformation separately, allowing the system to identify which specific areas were pressed by the user's fingers. This segmentation enables multi-finger operation detection without requiring the user to conform to a specific hand shape or grip pattern.
Solution Approach 2:
Instead of requiring the user to adapt their hand shape to fit a touch screen interface, the system is inverted to adapt to the user's natural hand position. The deformation detection system works with any hand grip configuration, allowing users to operate the device naturally without adjusting their hand shape to match a specific interface design.
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 accurate detection of user operations and improved operability by allowing users to apply forces arbitrarily on the device's exterior, distinguishing between intended and unintended deformations, and supporting multiple function modes with enhanced user interaction.
Implementation Method 1
utilizing a piezoelectric film for precise deformation detection
Data Source
AI summary
An electronic device that provides a number of function modes and operates by selecting one of the function modes. The device includes an audio output unit and a wireless communication unit that execute functions for the function modes. Moreover, a deformation detecting unit that detects deformation of an exterior housing by an external force and a storage unit that stores a correspondence between a deformation pattern and a response operation registered per function mode. The device also includes an operation determining unit that detects the deformation pattern based on the deformation and a control executing unit that reads a response operation of a current function mode associated with the deformation pattern and controls operation states of the audio output unit and the wireless communication unit.