Pen Mouse Inclining Compensation via Sensor Array
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Solution Overview
Problem
Conventional optical pen mice fail to effectively compensate for inclination angles caused by user-specific factors such as palm size, posture, and writing environment, resulting in inconsistencies between drawn lines and digital representations.
Innovation Solution
A pen mouse with an inclining compensation function, equipped with an optical sensor, sensor array, and processor, which analyzes the relative movement and activated sensing units to compute and compensate for inclined angles, adjust trace width based on pressure variation, and verify user authorization through a memory storage system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the optical navigation chip is disposed obliquely inside the pen tip to overcome drawing line inconsistency, then the calibration accuracy for fixed inclination angles is improved, but the adaptability to user-specific factors (palm size, posture, writing environment) deteriorates because the fixed hardware calibration cannot effectively overcome handwriting deviation
Solution Approach 1:
The patent transitions from a static, fixed hardware calibration approach to a dynamic software-based calibration system. The processor dynamically adjusts calibration parameters based on real-time sensing data from the sensor array, allowing the system to adapt to varying inclination angles and user-specific factors during operation rather than relying on a predetermined fixed angle
Solution Approach 2:
The patent changes the calibration parameter from a fixed physical angle (hardware disposition) to a variable software parameter that can be adjusted based on sensor input. The processor computes calibration parameters dynamically based on the activated sensing units and pressure distribution, enabling continuous adaptation to different writing conditions and user characteristics
2Device complexity
If conventional hardware calibration with fixed oblique disposition is used, then the device complexity is reduced, but the measurement precision of inclination angle deteriorates because it cannot accurately capture varied handwriting deviations
Solution Approach 1:
The patent replaces the mechanical hardware calibration system (fixed oblique disposition of optical chip) with an electronic/software-based system. The sensor array and processor compute inclination angles and calibration parameters electronically, substituting physical mechanical adjustment with digital signal processing and algorithmic compensation
Solution Approach 2:
The patent introduces a sensor array as an intermediary between the pen tip and the optical navigation chip. This intermediary component captures pressure and inclination information that the optical chip alone cannot detect, enabling more precise measurement without significantly increasing overall system complexity
3Ease of operation
If the optical navigation chip is disposed inside the pen tip with normal appearance, then the ease of operation is improved, but the calibration accuracy deteriorates because the optical navigation chip is slightly oblique relative to the reference plane due to inclination angle
Solution Approach 1:
The patent uses a sensor array to capture and copy the pressure distribution and inclination state, then uses this copied information to compute compensation parameters. Rather than physically adjusting the optical chip to match the inclination, the system creates a digital model of the inclination state and applies software-based correction
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
This solution provides improved calibration accuracy and operational efficiency by compensating for trace deviations and adjusting line widths, ensuring consistent digital representations and secure user authentication.
Implementation Method 1
an optical sensor adapted to sense a relative movement of an object
Implementation Method 2
The sensor array is a pressure sensor array or a capacitive sensor array
Implementation Method 3
The sensor array is a pressure sensor array or a capacitive sensor array
Data Source
AI summary
A pen mouse with an inclining compensation function includes an optical sensor, a sensor array, a pen tip and a processor. The optical sensor is adapted to sense a relative movement of an object. The sensor array has a plurality of sensing units. The pen tip is connected to the sensor array and adapted to activate at least one of the plurality of sensing units when being pressed by the object. The processor is electrically connected with the sensor array. The processor is adapted to compute a trace of the pen mouse via analysis of the relative movement and further to compensate the trace via analysis of the activated sensing unit.