Beacon Signal Timing Adjustment for Input Device Noise Interference
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Solution Overview
Problem
Input devices, such as touch sensor devices, face de-synchronization issues due to noise interference when transmitting beacon signals, leading to incomplete detection of user input from objects like capacitive pens and styluses.
Innovation Solution
A control system alters the timing schedule for beacon signal transmission to avoid noise interference by detecting noise patterns and implementing delays, ensuring reliable communication between the input device and the input object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the input device transmits beacon signals continuously to maintain synchronization, then synchronization reliability is improved, but noise interference causes de-synchronization
Solution Approach 1:
The system transmits beacon signals periodically rather than continuously, adjusting the transmission timing to avoid noise interference periods. The controller delays beacon signal transmission until after the noise interference period has passed, ensuring reliable synchronization without continuous transmission
Solution Approach 2:
The system detects noise interference in advance and preemptively delays beacon signal transmission until the noise period has passed. This preliminary detection and avoidance action prevents de-synchronization before it occurs, maintaining synchronization reliability
2Object-affected harmful factors
If the input device delays beacon signal transmission to avoid noise interference, then noise mitigation is improved, but transmission timing accuracy deteriorates
Solution Approach 1:
The controller receives feedback about noise interference detection and adjusts the beacon signal transmission timing accordingly. The system monitors for noise periods and dynamically modifies transmission timing to avoid noise while maintaining synchronization, using feedback to balance noise avoidance with timing accuracy
3Device complexity
If the input device uses standard beacon signal transmission timing, then device complexity is minimized, but noise interference causes incomplete user input detection
Solution Approach 1:
The system dynamically adjusts beacon signal transmission timing based on detected noise interference conditions. Rather than using fixed standard timing, the controller modifies transmission delays in response to noise detection, ensuring complete user input detection while adding manageable complexity to the transmission control
Data Source
AI summary
A method is provided. The method comprises: providing, by a control system of an input device, one or more first beacon signals to an input object; based, at least in part, on force data from the input object, detecting, by the control system, noise interference associated with providing at least one of the one or more first beacon signals to the input object; based, at least in part, on detecting the noise interference, altering, by the control system, a timing schedule for providing one or more subsequent beacon signals; and providing, by the control system, the one or more subsequent beacon signals to the input object based, at least in part, on the timing schedule.