Input Device Proximity Detection Return Manipulation Filtering
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Solution Overview
Problem
Conventional touch panel input devices often detect unintended manipulations, leading to erroneous input acceptance, which compromises user comfort and accuracy.
Innovation Solution
An input device comprising a display unit, a proximity detection unit, a manipulation judging unit, and a control unit that discriminates between valid and return manipulations, as well as contact and flick manipulations, to invalidate unintended signals and prevent erroneous detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If proximity detection is enabled to detect finger movements, then input versatility is improved, but erroneous manipulation detection increases
Solution Approach 1:
The system dynamically adjusts manipulation validity based on real-time proximity signal analysis. The manipulation judging unit evaluates the temporal and spatial characteristics of proximity signals to determine whether they represent intentional user actions or unintentional movements, allowing the system to adaptively validate or invalidate manipulations based on the detected pattern
Solution Approach 2:
The system uses feedback from the proximity detection unit to continuously monitor finger movements and provide input to the manipulation judging unit. This feedback loop enables the system to distinguish between valid manipulations and return manipulations by analyzing the sequence and characteristics of proximity signals, thereby improving manipulation accuracy while maintaining input versatility
2Ease of operation
If all proximity signals are accepted as valid inputs, then ease of operation is improved, but input accuracy deteriorates
Solution Approach 1:
The manipulation judging unit performs preliminary analysis of proximity signals before they are processed as valid inputs. By预先判断 (pre-judging) the validity of each manipulation based on proximity signal characteristics, the system filters out erroneous inputs while maintaining ease of operation for legitimate user actions
Solution Approach 2:
The system changes the parameter of manipulation validity from a fixed state to a dynamic state based on proximity signal analysis. The control unit invalidates specific proximity signals identified as return manipulations, thereby adjusting the acceptance criteria for inputs based on the detected manipulation pattern, which improves input accuracy without significantly impacting ease of operation
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 probability of accepting erroneous manipulations by correctly distinguishing between intended and unintended inputs, enhancing user experience and input accuracy.
Implementation Method 1
Touch panels which can detect coming into proximity of a finger... can detect a state that a finger is placed over the touch panel at a height position that is spaced from the touch panel by a certain distance... on the basis of a capacitance that is determined by a distance between the finger and the touch panel
Data Source
AI summary
An input device includes a display unit which displays data on a screen, a proximity detection unit which detects proximity of a finger to the screen and outputs a proximity detection signal, a manipulation judging unit which discriminates between a valid manipulation and a return manipulation of successive movement manipulations of the finger on the basis of proximity detection signals in accordance with the successive movement manipulations of the proximity detected finger, and a control unit which invalidates proximity detection signals corresponding to the discriminated return manipulation.