Pointing Stick Module Rank Compensation for Sensing Consistency
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Solution Overview
Problem
Pointing stick modules generate different sensing signals when the same force is applied due to process drift, resulting in inconsistent performance across different modules.
Innovation Solution
A pointing stick module with a rank unit and controller that determines the rank of the sensing device by processing signals, allowing for consistent performance by selecting appropriate compensation parameters based on the detected rank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If different pointing stick modules are manufactured using standard processes, then production cost and complexity are reduced, but sensing performance consistency deteriorates due to process drift
Solution Approach 1:
The patent applies preliminary action by measuring the rank of each sensing device during the manufacturing process and storing this information in advance. This allows the system to pre-compensate for process drift variations before the device is used, ensuring consistent sensing performance across different modules without requiring complex manufacturing processes. The controller reads the stored rank value and applies appropriate compensation parameters to normalize the sensing output.
2Device complexity
If process drift is not compensated, then device complexity is minimized, but sensing signal consistency deteriorates across different modules
Solution Approach 1:
The patent applies parameter changes by introducing a rank compensation mechanism that adjusts sensing parameters based on the measured rank of each device. The controller stores compensation parameters corresponding to different rank values and applies the appropriate compensation when processing sensing signals. This allows the system to maintain simplicity while achieving consistent sensing performance by dynamically adjusting parameters rather than changing the physical device characteristics.
3Reliability
If rank detection and compensation mechanisms are added, then sensing performance consistency is improved, but device complexity increases
Solution Approach 1:
The patent minimizes the increase in device complexity by performing the rank measurement and compensation parameter selection in advance during manufacturing. The rank value and corresponding compensation parameters are stored in memory, eliminating the need for complex real-time adjustment mechanisms. During operation, the system simply retrieves the pre-determined compensation parameters based on the stored rank value, maintaining operational simplicity while achieving consistent sensing performance.
Data Source
AI summary
A pointing stick module comprising: a sensing device; a rank unit; a transmission device and a controller. The transmission device is coupled to the sensing device and the rank unit. Also, the controller is coupled to the transmission device and coupled to the rank unit via the transmission device. The controller obtains a rank signal via detecting the rank unit, and determines a rank of the sensing device according to the rank signal.