Electronic Writing Instrument Trajectory Association
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Solution Overview
Problem
Existing display systems struggle to accurately identify which object is written with which electronic writing instrument, especially when multiple instruments trace trajectories that intersect or overlap.
Innovation Solution
An information processing device acquires and processes detection results from both external and internal sensors of the electronic writing instrument to associate the object with the correct instrument, using a combination of light trajectory and movement data to ensure accurate identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only a single sensor (either external or internal) is used to detect trajectory, then the device complexity is reduced, but the measurement precision and reliability of instrument identification deteriorates when trajectories intersect or overlap
Solution Approach 1:
The patent combines multiple sensor systems (external sensor and internal sensor) into a unified trajectory detection framework. The external sensor captures light trajectories while the internal sensor detects movement trajectories, and both are processed together to achieve high-precision instrument identification even when trajectories intersect or overlap.
Solution Approach 2:
The patent introduces an information processing device as an intermediary that receives and processes detection results from both external and internal sensors. This intermediary performs trajectory processing and association operations to identify which electronic writing instrument wrote which object, resolving the identification problem without requiring direct complex interaction between multiple sensors.
2Reliability
If multiple sensors are used to detect trajectories, then the reliability of identifying which object is written with which instrument improves, but the device complexity increases
Solution Approach 1:
The patent segments the trajectory detection function into two independent sensor systems: an external sensor for light trajectory detection and an internal sensor for movement trajectory detection. Each sensor system operates independently with its own detection mechanism, allowing the system to maintain high reliability through multiple data sources while managing complexity through functional segmentation.
Solution Approach 2:
The information processing device performs multiple functions: it processes detection results from external sensors, processes detection results from internal sensors, generates trajectory information from both sources, and performs association operations to identify instrument-object relationships. This multi-functional approach consolidates complexity into a single processing unit rather than requiring separate systems for each function.
3Loss of information
If trajectory data from multiple sensors is processed and associated, then the certainty of object-instrument association improves, but the information processing complexity increases
Solution Approach 1:
The patent performs preliminary processing of detection results before association operations. The information processing device first processes the detection result from the external sensor to generate first trajectory information, then processes the detection result from the internal sensor to generate second trajectory information. These preliminarily processed trajectory information are then used in the association operation, reducing the complexity of the final matching process.
Solution Approach 2:
The patent implements a feedback mechanism where the information processing device uses both first trajectory information and second trajectory information to perform association operations. The system compares and correlates data from both sensor systems, using the feedback from one trajectory source to refine the identification using the other source, thereby improving association certainty while managing processing complexity through iterative refinement.
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 allows for precise identification of objects written with specific electronic writing instruments, even when trajectories intersect, enhancing the certainty and accuracy of instrument association.
Implementation Method 1
The electronic writing instrument has a light-emitting portion. Light emitted from the light-emitting portion of the electronic writing instrument is captured by a camera.
Data Source
AI summary
An information processing device includes: an acquisition unit and an association unit. The acquisition unit acquires first information, generated by processing a detection result which is output from a first sensor provided outside an electronic writing instrument, which includes a trajectory traced by the electronic writing instrument in writing of an object on a display image and second information, generated by processing a detection result which is output from a second sensor provided in the electronic writing instrument to detect a movement of the electronic writing instrument, which includes a trajectory traced by the electronic writing instrument in writing of the object on the display image. The association unit associates the object with the electronic writing instrument using the first information and the second information.