Input Device Vibration Timing for Response Latency
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Solution Overview
Problem
Existing input devices experience time lag in informing users of input operations due to noise-induced erroneous signals from pressure sensors, leading to user discomfort as the vibration response is delayed.
Innovation Solution
An input device with an acceleration or pressure detection unit that initiates vibration upon detection, allowing the vibration unit to start vibrating before the determination of an effective input operation is confirmed, and stops vibration if no effective input is detected within a predetermined time, reducing the time lag and user discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the vibration starts after the determination result is obtained, then the accuracy of input detection is improved, but the response time deteriorates causing user discomfort
Solution Approach 1:
The vibration unit starts vibrating in advance when acceleration or pressure is detected, before the input determination unit completes its determination. This preliminary action reduces the perceived response time for the user while the determination process continues in parallel, resolving the contradiction between fast response and accurate detection.
Solution Approach 2:
The system dynamically adjusts the vibration timing based on detection results. The vibration starts immediately upon detecting acceleration or pressure, and its continuation or termination depends on the subsequent determination result, creating a dynamic response that balances speed and accuracy.
2Speed
If the vibration starts immediately when acceleration or pressure is detected, then the response speed is improved, but erroneous vibration due to noise may occur
Solution Approach 1:
The system uses feedback from the input determination unit to control the vibration unit. The vibration starts immediately upon detection but is terminated if the determination result indicates it was noise. This feedback mechanism allows fast initial response while maintaining reliability through subsequent verification.
Solution Approach 2:
The vibration unit performs preliminary vibration when acceleration or pressure is detected, before the determination result is available. This allows the system to respond immediately to potential inputs while the determination process validates whether the detection was genuine, resolving the conflict between speed and reliability.
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
Quickly informs users of input operations by initiating vibration without waiting for determination results, ensuring timely feedback on effective or ineffective inputs and minimizing the impact of noise-induced errors.
Implementation Method 1
an acceleration sensor 2 that detects acceleration applied to the touch panel 1
Implementation Method 2
a pressure sensor may output an erroneous signal due to influences such as noise
Data Source
AI summary
An input device includes an input operation unit, on which an input operation is performed; an input operation detection unit that detects at least one of acceleration and pressure to the input operation unit; an input determination unit that determines whether the at least one of acceleration and pressure detected by the input operation detection unit is an effective input operation; and a vibration unit that, when the at least one of acceleration and pressure is detected by the input operation detection unit, starts to vibrate before the input determination unit outputs a determination result.