Input Device Conductive Tip Segmentation for Signal Efficiency
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Solution Overview
Problem
Existing input devices with conductive tips suffer from low transmission and reception efficiency due to small tip sizes, leading to incorrect input point recognition when tilted or poorly placed.
Innovation Solution
An input device with a conductive tip and a resonant circuit unit, along with a connection part that encloses the tip to increase the coupling area, and a processor that analyzes signal patterns to detect tilt characteristics and compensate for input point errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the conductive tip is made small to enable precise input selection, then input precision is improved, but coupling capacitance becomes too small causing transmission and reception efficiency to deteriorate
Solution Approach 1:
The conductive tip is divided into two functional parts: a small exposed tip portion for precise input selection and a larger connection part with greater cross-sectional area for enhanced coupling capacitance. This segmentation allows each part to fulfill its specific function optimally without compromise
Solution Approach 2:
The connection part extends the conductive structure in the vertical dimension (into the device body) rather than increasing the horizontal tip size. This dimensional transition enables increased coupling area without affecting the precision of the exposed tip portion
2Reliability
If a large conductive tip is made to improve transmission and reception efficiency, then coupling capacitance is improved, but input point recognition becomes incorrect when the input device is tilted or poorly placed
Solution Approach 1:
By separating the conductive tip into a small exposed portion and a larger connection part, the invention ensures that only the small tip portion contacts the touch screen for precise input point recognition, while the larger connection part remains inside the device to provide sufficient coupling capacitance without interfering with positioning accuracy
Solution Approach 2:
Different parts of the conductive structure have different sizes and functions: the exposed tip is small for precision contact, while the connection part is large for electrical coupling. This local differentiation resolves the contradiction between size requirements for different functions
3Reliability
If the conductive tip size is increased to enhance signal transmission, then transmission efficiency is improved, but the device complexity increases due to additional structural components
Solution Approach 1:
The connection part serves dual functions: it provides the necessary coupling capacitance for signal transmission and simultaneously acts as a structural connector between the conductive tip and the device body. This merging of functions increases transmission efficiency without proportionally increasing complexity
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
Enhances transmission and reception efficiency, accurately recognizing input points and allowing for various interactions based on tilt characteristics, preventing incorrect recognition and improving user interaction with electronic devices.
Implementation Method 1
When the input device is implemented in the capacitive coupling method, the input device may include a conductive tip. Accordingly, when the conductive tip of the input device touches the touch screen of the electronic device or approaches within a predetermined distance, capacitive coupling is achieved between the conductive tip and electrodes in the touch screen.
Implementation Method 2
a resonant circuit unit configured to generate a response signal corresponding to a signal received by the conductive tip and output the response signal through the conductive tip
Data Source
AI summary
An input device and method for control based on input device tilt is provided. The input device includes a conductive tip formed at one end of the input device, a resonant circuit unit configured to generate a response signal corresponding to a signal entering through the conductive tip and output the response signal through the conductive tip, and a connection part formed between the conductive tip and a body of the input device to enclose a periphery of the conductive tip so as to have a part of the conductive tip exposed from one end of the input device. The connection part includes a metal member having a larger cross-section area than a cross-section area of the conductive tip and which affects signal intensity in response to input device tilt as detected by a touch screen of an electronic device.