Touch Panel Input Discrimination Using Area and Pressure Analysis
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Solution Overview
Problem
Touch panels often inadvertently register instructions when the user's touch position deviates from the intended input area, leading to unintended input issues.
Innovation Solution
A system that acquires touch information regarding the area and shape of the touch contact on a touch panel, determining whether an instruction input is intended based on the touch information, using a processor to differentiate between intended and unintended inputs by setting a threshold for pressure and adjusting the operation area accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the touch panel registers input based on touch position alone, then the input response is simple and fast, but unintended instructions are frequently input when touch position deviates from the neutral area
Solution Approach 1:
The patent changes the parameter basis for input recognition from only touch position to a combination of touch position, touch area, and touch pressure. By monitoring multiple parameters simultaneously, the system can distinguish between intentional inputs and accidental touches, thereby improving input accuracy while maintaining response speed through real-time parameter monitoring
2Reliability
If a neutral area is designated to prevent unintended input, then input accuracy improves, but the user must move their touch to the neutral area which reduces ease of operation
Solution Approach 1:
The system automatically analyzes touch characteristics (area, pressure, position) to determine whether an input is intentional, eliminating the need for users to manually move their touch to a neutral area. The touch panel itself provides the discrimination function through multi-parameter monitoring, making the operation more convenient while maintaining accuracy
3Ease of operation
If the touch panel accepts input from any position, then ease of operation is maximized, but unintended instructions are frequently registered
Solution Approach 1:
The patent enables the touch panel to accept inputs from any position by analyzing multiple parameters (position, area, pressure) rather than relying on position alone. This allows flexible operation across the entire panel surface while using pressure and area analysis to filter out unintended inputs, thus maintaining both operational flexibility and input accuracy
Data Source
AI summary
A non-transitory computer-readable recording medium has recorded therein a program for causing a processor to function as: a touch information acquirer configured to acquire touch information regarding at least one of an area and a shape of a touch area on a touch panel with which an object comes in contact; and a determiner configured to determine, when the touch information acquired by the touch information acquirer indicates that a contact between the object and the touch panel is present, whether input of an instruction regarding a direction in the touch panel is present, based on the touch information.