Electronic Pen Gyroscope Writing Data Correction
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Solution Overview
Problem
Electronic pens using sensors to detect writing movements on a surface often produce distorted writing data due to the device being held at arbitrary angles relative to the writing surface, causing the recorded writing to appear rotated compared to the user's intended orientation.
Innovation Solution
Incorporating a gyroscope to sense rotation and a correction component that calculates an offset angle based on the rotation data, adjusting the writing data to correct for the device's tilt and orientation relative to a reference axis, ensuring accurate alignment with the physical writing on the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electronic writing device is held at arbitrary angles relative to the writing surface, then the ease of operation is improved, but the measurement precision of the writing data deteriorates
Solution Approach 1:
The gyroscope continuously provides feedback about the device's rotation angle, which is used by the correction component to dynamically adjust and correct the writing data coordinates, ensuring accuracy regardless of device orientation
Solution Approach 2:
The system changes the parameter of coordinate transformation by calculating correction angles based on gyroscope data, applying rotational transformations to the writing data to compensate for device tilt and maintain measurement precision
2Measurement precision
If a gyroscope and correction component are added to correct writing data, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The gyroscope serves multiple functions: detecting device orientation, providing rotation angle data for correction, and enabling the system to handle various writing angles, making the additional component justify its inclusion through multi-purpose utility
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 solution effectively corrects writing data by applying correction angles to each sample, resulting in straight and accurate representation of written lines, even when the pen is held at offset angles, thereby aligning digital writing with the physical writing on the surface.
Implementation Method 1
a gyroscope configured to sense rotation of the electronic writing device and generate rotation data corresponding to the rotation
Data Source
AI summary
In embodiments of correcting writing data generated by an electronic writing device, an electronic writing device includes a positional sensor configured to sense movement of the electronic writing device when the device is used to write on a writing surface, and to generate writing data corresponding to the movement of the electronic writing device. The device also includes a correction component that is configured to correct each sample of writing data using rotation data generated by a gyroscope. To do so, the correction component calculates an offset angle of the electronic writing device relative to a reference axis of the positional sensor based at least in part on the rotation data generated by the gyroscope. The correction component then determines a correction angle based on the offset angle, and adjusts the sample of writing data by applying the correction angle to the sample of the writing data.