Displacement Detection Device Single-Axis Hovering Control
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Solution Overview
Problem
Conventional mouse devices struggle to accurately perform single-axis operations, especially in hovering modes, leading to difficulties in drawing straight lines or controlling cursor movements effectively, as they often require additional peripheral devices to compensate for two-axis movements.
Innovation Solution
A displacement detection device equipped with an image sensor and processing unit that differentiates between contact and hovering modes on a working surface, adjusting the output ratio of detected displacements in different axes based on hovering height, allowing partial or full output of displacements to facilitate single-axis operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional mouse device is used for hovering operation, then the device can detect displacement in both axes, but it cannot perform single-axis operations accurately
Solution Approach 1:
The patent implements dynamic adjustment of displacement output by detecting hovering height and selectively outputting displacement data. When hovering height exceeds a threshold, the system suppresses one axis displacement and only outputs the other axis, enabling single-axis operation mode. This dynamic switching between full-scale output and selective suppression resolves the contradiction by adapting the output behavior to the operational context.
2Ease of operation
If a conventional mouse device is used for drawing straight lines, then two-axis movements are detected, but additional peripheral devices are required to draw straight lines
Solution Approach 1:
The patent extracts and suppresses the unwanted axis displacement information during hovering operation. By identifying when the device is in hovering mode and selectively outputting only the relevant axis displacement, the system eliminates the need for additional peripheral devices to constrain movement, enabling straight line drawing with the mouse alone.
3Measurement precision
If the device outputs full scale displacement in hovering mode, then all movement information is provided, but single-axis control accuracy deteriorates
Solution Approach 1:
The patent applies local quality by treating different axes differently based on hovering height. When hovering above the threshold, the system applies suppression to one axis while maintaining full-scale output for the other axis. This selective application of displacement suppression ensures that only the necessary displacement information is transmitted, improving cursor control accuracy for single-axis operations while preserving essential movement data.
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
Enhances the usability of the device by allowing precise single-axis control during hovering operations, reducing unwanted displacements and improving cursor control accuracy, thereby increasing the device's practicality for tasks like gaming and drawing.
Implementation Method 1
an image sensor configured to detect reflected light from the working surface and successively output image frames
Data Source
AI summary
A displacement detection device includes an image sensor, a processing unit and an output unit. The image sensor is configured to detect reflected light from a working surface to successively output image frames. The processing unit is configured to identify a hovering height and calculate a first axis displacement and a second axis displacement according to the image frames. The output unit is controlled by the processing unit to output a first ratio of the first axis displacement but not to output the second axis displacement when the hovering height is higher than a predetermined height.