Display Apparatus Sensor Signal Noise Filtering
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Solution Overview
Problem
Existing display apparatuses struggle to effectively utilize changes in sensor signals without being overwhelmed by noise, particularly in situations where multiple changes occur within a predetermined period, leading to unnecessary actions and potential overload.
Innovation Solution
A method and apparatus that detect a first change in a sensor signal, initiate a first action, and then delay performing subsequent actions until a predetermined period ends, ensuring that only changes detected after this period are acted upon, thereby avoiding immediate reactions to noise-induced changes and maintaining continuous operation when multiple individuals are present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display apparatus immediately responds to every change in sensor signal, then the system can detect all changes including genuine changes, but the system becomes overloaded by noise-induced changes and performs unnecessary actions
Solution Approach 1:
The system performs preliminary filtering by detecting changes within a predetermined time period after a first change is detected. This preliminary action prevents subsequent changes detected during this period from triggering immediate responses, thereby filtering out noise-induced changes before they can overload the system with unnecessary actions.
Solution Approach 2:
The predetermined time period acts as an intermediary mechanism between sensor signal detection and system response execution. By introducing this time-based mediator, the system can distinguish between genuine changes (those occurring outside the predetermined period) and noise-induced changes (those occurring within the period), enabling reliable operation without overload.
2Productivity
If the display apparatus ignores changes in sensor signal during a predetermined period, then the system avoids noise-induced overload, but it may miss genuine changes that occur immediately after the first change
Solution Approach 1:
The system performs preliminary detection of changes during the predetermined period without executing immediate responses. This preliminary monitoring ensures that genuine changes are not missed, while the deferred response execution prevents noise-induced overload, thus maintaining both efficiency and detection accuracy.
Solution Approach 2:
The system uses feedback by continuously monitoring sensor signal changes during the predetermined period. When a change is detected within this period, the system adjusts its response timing based on whether it occurs before or after the period ends, ensuring that genuine changes are captured while filtering out noise.
3Adaptability or versatility
If the display apparatus performs multiple actions in response to multiple sensor signal changes, then the system responds comprehensively to all detected changes, but the system becomes overloaded and cannot maintain continuous operation
Solution Approach 1:
The system performs preliminary filtering of sensor signal changes by establishing a predetermined time period after the first change. Changes detected during this period are filtered out from triggering immediate responses, reducing the total number of actions performed while maintaining comprehensive response to genuine changes that occur outside this period.
Solution Approach 2:
The system implements periodic response execution by deferring actions until the predetermined time period ends. This periodic approach allows the system to maintain continuous operation by spacing out response actions, preventing overload while still responding comprehensively to genuine changes through the structured timing mechanism.
Data Source
AI summary
A method for operating a display apparatus, the method including, detecting a first change in a first sensor signal from a first sensor, performing a first action in response to the detection of the first change, detecting changes in the first sensor signal in a first period that starts in response to the detection of the first change, maintaining the first action during the first period, and performing a second action after the first period if a second change in the first sensor signal last detected in the first period among the changes in the first sensor signal is different from the first change.