Remote Controller Motion Sensor Jitter Filtering
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Solution Overview
Problem
Remote controller devices face difficulty in distinguishing intended hand motions from unintended hand jitter, especially in pointing modes where jitter is of similar magnitude to intended motion, leading to inaccurate cursor control on screens.
Innovation Solution
Incorporating a remote control device with at least two motion sensors, such as a three-axis accelerometer and a three-axis gyroscope, and a processing unit that can switch between linear and pointing modes, where the pointing mode filters out hand jitter to improve cursor accuracy on screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motion sensors are used to detect hand motion for cursor control, then the remote controller can track hand movements, but hand jitter of similar magnitude to intended motion causes inaccurate cursor positioning
Solution Approach 1:
The system dynamically switches between linear mode and pointing mode based on the detected hand motion characteristics. In linear mode, cursor position directly follows hand motion. In pointing mode, the system detects when hand jitter dominates and applies filtering algorithms to distinguish intended motion from jitter, thereby adapting the cursor control behavior to current hand stability conditions
Solution Approach 2:
The system changes the processing parameters of motion sensor data based on the operating mode. In linear mode, the cursor position is calculated with high sensitivity to hand motion. In pointing mode, the system adjusts filtering parameters to reduce the impact of high-frequency jitter while preserving low-frequency intended motion, effectively changing how motion parameters are interpreted
2Measurement precision
If linear mode is used for cursor tracking, then hand motion is accurately tracked, but hand jitter significantly affects cursor stability during pointing tasks
Solution Approach 1:
The system transitions from static linear mode to dynamic mode selection, where the operating mode changes based on real-time hand motion analysis. When instability is detected during pointing tasks, the system switches to pointing mode which applies stabilization filtering, thus dynamically adjusting cursor stability based on actual hand motion characteristics
3Stability of the object's composition
If pointing mode with filtering is used to reduce hand jitter, then cursor stability improves, but the responsiveness and direct tracking of hand motion decreases
Solution Approach 1:
The system dynamically adjusts the filtering intensity based on the operating mode. In linear mode, no filtering is applied for maximum responsiveness. In pointing mode, filtering is applied selectively to stabilize the cursor. This dynamic adjustment ensures that responsiveness is maintained when speed is critical while stability is enhanced when precision is needed
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 reduces the impact of hand jitter, allowing for precise cursor control during pointing tasks, enhancing user experience by accurately tracking intended hand motions even with significant hand jitter.
Implementation Method 1
The sensors can include a three-axis accelerometer and a three-axis gyroscope to accurately trace three dimensional motions
Implementation Method 2
The sensors can include a three-axis accelerometer and a three-axis gyroscope to accurately trace three dimensional motions
Data Source
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AI summary
Described herein is an intelligent remote controlling device. The device can include a six-axis motion sensor to accurately track three dimensional hand motions. For example, the sensors can include a three-axis accelerometer and a three-axis gyroscope. The remote control device can also include a processing unit integrated with the motion sensors in a single module. The processing unit can convert data regarding the hand motion to data regarding a cursor motion for a cursor that will be displayed on a screen of an electronic device. The processing unit can be integrated with the motion sensors in a single module. The processing unit can include at least two modes of functionality corresponding to different types of hand motion: a one to one mode where the cursor directly tracks the hand motion and a non-linear mode that filters data from the motion sensors to eliminate hand jitter.