Input Device Sensor Switching for Signal Detection Sensitivity
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Solution Overview
Problem
Existing terminal input devices suffer from mutual interference between capacitive and electromagnetic sensors, leading to reduced sensitivity in signal detection due to simultaneous activation of both sensor types.
Innovation Solution
An input device with a single detection unit connected to multiple sensors, where a controller manages connections and disconnections between the sensors and the detection unit to determine the input type and avoid interference, allowing for separate detection of capacitive and electromagnetic signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If capacitive sensor and electromagnetic sensor are simultaneously activated, then the input device can detect both capacitive signal and electromagnetic signal, but mutual interference occurs during signal detection and sensitivity is reduced
Solution Approach 1:
The patent implements dynamic switching between capacitive sensor and electromagnetic sensor based on the type of input detected. The system transitions from static simultaneous activation to dynamic selective activation, where only the appropriate sensor is active at any given time. This resolves the contradiction by maintaining versatility through multiple sensors while improving sensitivity through selective activation that prevents mutual interference.
Solution Approach 2:
The system employs periodic switching between different sensor modes, alternating between capacitive detection mode and electromagnetic detection mode. This periodic action allows the system to cycle through different detection types, ensuring that only one sensor type is active during each detection cycle, thereby eliminating mutual interference while maintaining the ability to detect both signal types.
2Reliability
If capacitive sensor and electromagnetic sensor are simultaneously activated, then both input types can be detected, but mutual interference causes reduced detection sensitivity
Solution Approach 1:
The system incorporates feedback mechanisms where the output from the detection unit informs the control unit about the current input state. Based on this feedback, the control unit dynamically adjusts which sensor is activated. This feedback loop ensures reliable detection by selecting the appropriate sensor based on real-time conditions while managing device complexity through automated control rather than manual switching.
Solution Approach 2:
The detection system performs self-service by automatically determining which sensor type should be active based on the characteristics of the detected signal. The system self-regulates the sensor activation without requiring external intervention, thereby maintaining detection accuracy while minimizing the complexity of external control mechanisms.
Data Source
AI summary
In an embodiment of the present invention, there provides an input device, a touch screen, and a user device, in order to increase the sensitivity of signal detection. The present invention relates to the field of signal detection. The input device comprises: a detection unit, a controller, and at least two sensors, wherein the detection unit corresponds to the at least two sensors, the at least two sensors are connected to the controller, and the at least two sensors correspond to at least two input types of the input device. The detection unit is configured to detect an input signal. The sensors are configured to determine the corresponding input type of the input signal after receiving the input signal detected by the detection unit. The controller is configured to control connections and disconnections between the at least two sensors and the detection unit. The embodiment of the present invention is used for signal detection.