Haptic Pen Feedback With Adaptive Sound and Vibration
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Solution Overview
Problem
Existing haptic pens fail to replicate the full sensory experience of using a mechanical writing instrument, as they primarily rely on vibration simulation without incorporating other stimuli like sound, leading to a less comfortable writing experience.
Innovation Solution
An information processing system that synthesizes vibration and sound components based on the acoustic environment to enhance the writing experience, with features like silent mode and volume adjustment to optimize the output characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If only vibration component is supplied to the vibrating unit, then the device complexity is reduced, but the writing comfort and realism are insufficient
Solution Approach 1:
The patent combines vibration component and sound component into a single drive signal that is supplied to the vibrating unit. The controller synthesizes both components and outputs them through the same actuator, merging two functions (vibration and sound generation) into one signal transmission path. This reduces device complexity while improving writing comfort by providing both tactile and auditory feedback.
Solution Approach 2:
The vibrating unit serves multiple functions: it generates both vibration feedback and sound output using the same actuator. The drive signal contains both vibration component and sound component, allowing the single vibrating unit to perform dual roles. This multi-functionality improves writing realism without proportionally increasing device complexity.
2Ease of operation
If sound component is always output at high intensity, then the writing realism is improved, but the adaptability to different acoustic environments deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of sound component intensity based on acoustic environment detection. The controller detects ambient noise levels and automatically adjusts the sound output intensity accordingly. This allows the system to adapt to different environments (quiet rooms, noisy places, silent mode) while maintaining writing realism, resolving the contradiction between fixed high-intensity sound and environmental adaptability.
Solution Approach 2:
The system uses feedback from acoustic environment detection to adjust sound component intensity. The controller continuously monitors the acoustic environment and modifies the drive signal's sound component based on detected conditions. This feedback mechanism enables automatic adaptation to different acoustic contexts while preserving the immersive writing experience.
3Ease of operation
If sound component is synthesized with vibration component, then the writing experience is enhanced, but the energy consumption increases
Solution Approach 1:
The patent merges sound component and vibration component into a single drive signal that is supplied to one vibrating unit. By combining both functions (sound generation and vibration) into a single actuator and signal path, the system enhances writing experience without proportionally increasing energy consumption. The shared hardware resources reduce overall energy demand compared to separate systems.
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 improves the writing comfort by presenting sounds and vibrations tailored to the acoustic environment, providing a more immersive and realistic simulation of using a mechanical pen.
Implementation Method 1
a haptic pen is a digital pen having a haptic feedback function... The haptic feedback is realized by vibrating a vibrating body
Implementation Method 2
supplies, to the vibrating unit, a drive signal obtained by synthesizing a vibration component and a sound component
Data Source
AI summary
An information processing system includes an information processing apparatus and an input device, where the input device includes a vibrating unit, the information processing apparatus includes a touch sensor and a display unit, and the touch sensor and the display unit are superimposed on each other. A controller of the information processing apparatus or the input device supplies, to the vibrating unit, a drive signal obtained by synthesizing a vibration component and a sound component in response to contact of the input device with the touch sensor, and determines output characteristics of the sound component based on an acoustic environment of the information processing apparatus.