Pen Input Sound Switching for Realistic Writing Feedback
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Solution Overview
Problem
Existing pen-shaped input devices for interactive displays fail to replicate the sensation of writing on a writing medium accurately, as they lack effective tactile and auditory feedback mechanisms.
Innovation Solution
An information processing system that includes a sensor unit to detect contact and proximity of the pen-shaped input device, a sound output unit to provide sound feedback, and a control unit to switch between silent and audible sound output based on the device's state, enhancing the tactile and auditory experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pen-shaped input device is used for inputting to an interactive display system, then the user can obtain a sensation similar to writing on a writing medium through tactile feedback, but the sensation is impaired when the device is detected within the detection limit distance without actual contact
Solution Approach 1:
The system performs preliminary action by outputting sound in advance when the pen-shaped input device is detected within the detection limit distance, before actual contact with the operation target surface. This preliminary sound output prepares the user's auditory expectation, ensuring that when contact is made, the writing sound is already playing, thereby maintaining the immersive writing sensation without interruption or delay.
Solution Approach 2:
The system implements feedback by continuously monitoring the position of the pen-shaped input device through the sensor unit and adjusting the sound output accordingly. When the device enters the detection limit distance, the system provides auditory feedback through sound output, and when contact is detected, it transitions to writing sound output, creating a continuous feedback loop that enhances the writing sensation reliability.
2Measurement precision
If sound output is delayed until actual contact is detected, then the writing sound timing is accurate, but the user experience is disrupted when the pen is hovered near the surface
Solution Approach 1:
The system outputs sound in advance when the pen-shaped input device is detected within the detection limit distance, before actual contact occurs. This preliminary action ensures that the sound is already playing when contact is made, maintaining the continuity of the writing sensation without disruption or timing issues.
Solution Approach 2:
The system dynamically adjusts the sound output state based on the real-time position of the pen-shaped input device. It transitions from a first state (within detection limit distance) to a second state (actual contact), adjusting the sound output accordingly to maintain writing sensation continuity while preserving contact detection accuracy.
3Ease of operation
If the system outputs sound continuously, then the user experiences continuous auditory feedback, but the writing sensation becomes less realistic when the pen is not in contact
Solution Approach 1:
The system dynamically changes the sound output based on the detected state of the pen-shaped input device. In the first state (within detection limit distance), it outputs sound; in the second state (actual contact), it outputs writing sound. This dynamic adjustment provides continuous auditory feedback while maintaining writing realism by switching to appropriate sound types based on contact status.
Solution Approach 2:
The system changes the parameter of sound output type based on the detected state. It transitions from general sound output to specific writing sound output when contact is detected, thereby maintaining auditory feedback continuity while preserving writing realism through appropriate parameter selection.
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 ensures a more immersive writing experience by providing tactile feedback through vibrations and sound effects that mimic writing on a real writing medium, thereby improving user interaction.
Implementation Method 1
a sensor unit that performs detection of contact of a pen-shaped input device with an operation target surface and presence of the pen-shaped input device within a detection limit distance on the operation target surface
Implementation Method 2
a sound output unit that outputs a sound corresponding to input sound data
Implementation Method 3
a stylus of a pen shape (pen-shaped input device) that is capable of providing tactile feedback by driving a tactile actuator to generate vibrations
Data Source
AI summary
An information processing system includes: a sensor unit that performs detection of contact of a pen-shaped input device with an operation target surface and presence of the pen-shaped input device within a detection limit distance on the operation target surface; a sound output unit that outputs a sound corresponding to input sound data; and a sound output control unit that inputs silent sound data to the sound output unit in response to the sensor unit detecting a first state in which the pen-shaped input device is detected within the detection limit distance, and inputs audible sound data to the sound output unit in response to the sensor unit detecting that, after the first state, a second state in which the pen-shaped input device is in contact with the operation target surface has been reached.