Dynamic Self-Switchable CPI Resolution for Optical Mouse Sensors
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Solution Overview
Problem
Existing optical mouse sensors have fixed CPI resolution settings, which are not adaptable to varying application needs, such as different surfaces and user preferences, leading to suboptimal performance in environments like kitchens or gaming environments that require dynamic responsiveness and accuracy.
Innovation Solution
An optical mouse sensor with a dynamic self-switching CPI resolution capability, utilizing a processor and memory to detect movement variables like velocity, acceleration, or user preferences, and adjust the CPI resolution accordingly to optimize performance for specific applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed CPI resolution is used, then device simplicity is maintained, but adaptability to different applications deteriorates
Solution Approach 1:
The patent implements dynamic CPI resolution switching by enabling the optical mouse sensor to automatically adjust its CPI setting based on detected movement characteristics. The sensor transitions from a static fixed-CPI state to a dynamic adaptive-CPI state, resolving the contradiction between adaptability and complexity by introducing controlled dynamics through movement-based detection and switching logic
Solution Approach 2:
The optical mouse sensor performs self-adjustment of CPI resolution by detecting its own movement characteristics and autonomously selecting appropriate CPI settings. This self-service mechanism eliminates the need for external control systems or user intervention, achieving adaptability while minimizing the increase in device complexity
2Measurement precision
If high CPI resolution is maintained, then position accuracy is improved, but responsiveness to fast movement deteriorates
Solution Approach 1:
The patent dynamically adjusts CPI resolution based on movement velocity detection. When fast movement is detected, the sensor switches to lower CPI settings to maintain responsiveness; when slow movement is detected, it switches to higher CPI settings to maximize position accuracy. This dynamic adaptation resolves the contradiction between measurement precision and response speed
Solution Approach 2:
The sensor changes the CPI resolution parameter in response to detected movement characteristics. By modifying this critical parameter based on real-time movement conditions, the system optimizes the balance between position accuracy and response speed for different usage scenarios
Data Source
AI summary
An optical mouse employs an optical mouse controller and an optical mouse sensor. In operation, the optical mouse sensor generates an image sensing report signal indicative of a movement of the optical mouse over a surface of an object and communicates the image sensing report signal to the optical mouse controller based on a CPI resolution setting of the optical mouse sensor. To be responsive to varying applications, the optical mouse sensor detects a dynamic movement variable associated with the movement of the optical mouse over the surface of the object and controls a switching of the CPI resolution setting among at least two different CPI resolutions based on a detection of the dynamic movement variable.