Pen-Shaped Input Vibration Control for Paper-Like Writing
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Solution Overview
Problem
Existing pen-like stylus devices fail to replicate the tactile sensation of writing on a real writing medium, such as paper, during input operations on interactive displays.
Innovation Solution
An information processing system that includes a contact parameter detection unit to detect contact states and a feedback control unit to derive feedback levels based on the detected parameters, driving tactile sensation reproduction parts in the pen-shaped input device to simulate the sensation of different writing instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pen-shaped input device generates vibration through a tactile actuator, then tactile feedback is provided, but the sensation is not close enough to writing on a real writing medium
Solution Approach 1:
The patent changes the parameters of tactile feedback by detecting contact parameters (pressure, position, speed) and dynamically adjusting vibration feedback levels based on the selected writing instrument type. This allows the tactile actuator to reproduce different writing sensations (pencil, ballpoint pen, fountain pen) by modifying vibration characteristics to match real-world writing experiences
Solution Approach 2:
The system implements a feedback mechanism where contact parameters detected during writing operations are used to derive appropriate feedback levels. The tactile actuator receives control signals based on this feedback loop, adjusting vibration in real-time to simulate the tactile sensation of different writing instruments on paper
2Adaptability or versatility
If vibration is emitted from the pen-shaped input device, then tactile sensation is reproduced, but the sensation does not closely match actual writing experience
Solution Approach 1:
The patent employs parameter changes by associating different feedback levels with different writing instrument types. The system detects contact parameters and derives feedback levels that correspond to the selected instrument (pencil, ballpoint pen, fountain pen), thereby adapting the tactile feedback to match the specific characteristics of each writing tool
Solution Approach 2:
The tactile feedback system is made dynamic by continuously adjusting vibration characteristics based on real-time contact parameter detection. The feedback control unit modifies vibration frequency, amplitude, and pattern dynamically during writing operations to accurately reproduce the varying tactile sensations encountered when using different writing instruments on paper
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 system provides a tactile feedback that closely mimics the experience of writing on a real writing medium, enhancing the input sensation using a pen-shaped input device.
Implementation Method 1
a pen-like stylus (pen-shaped input device) capable of providing tactile feedback by generating a vibration through drive of a tactile actuator
Data Source
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AI summary
An object of the present invention is to create a sensation similar to that of actually writing on a writing medium. An information processing system includes a contact parameter detection unit configured to detect one or more contact parameters corresponding to a contact state of a pen-shaped input device with respect to an operation target surface, and a feedback control unit configured to derive a feedback level corresponding to a writing instrument type set for the pen-shaped input device based on the detected contact parameter and drive a tactile sensation reproduction part in the pen-shaped input device based on the derived feedback level.