Dynamic Restricted Area Definition for Touch Panel Error Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable devices with touch panels face operability issues due to unnecessary invalidation of touch operations at the inner peripheral edge, which can lead to erroneous interactions, especially when screens with low operation frequency are displayed, and existing solutions fail to differentiate between various screens and user intentions effectively.
Innovation Solution
A portable device and method that dynamically define a restricted area within the touch panel based on the screen being displayed and user activity, using modules for acceleration detection, imaging, and illuminance to determine when to restrict touch operations, ensuring accurate prevention of erroneous inputs without compromising usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a restricted area is defined at the inner peripheral edge of the touch panel to prevent erroneous operations, then operational reliability is improved, but ease of operation deteriorates due to unnecessary invalidation of touch operations
Solution Approach 1:
The patent applies dynamics by making the restricted area definition temporary and condition-based rather than permanent. The system dynamically determines whether to define a restricted area based on real-time detection of user activity (acceleration, illuminance, imaging), allowing the touch panel to adapt between restricted and unrestricted states according to actual usage conditions, thus preventing erroneous operations only when necessary while maintaining ease of operation during normal use
2Reliability
If a restricted area is defined to prevent erroneous operations on low-frequency screens, then reliability is improved, but device complexity increases due to multiple detection modules
Solution Approach 1:
The patent applies universality by designing the control unit to perform multiple functions: it integrates the determination of whether to define a restricted area, the definition of the restricted area itself, and the processing of touch operations all within a single control unit. This multi-functional approach consolidates what could be separate complex modules into one unified system, reducing overall device complexity while maintaining reliable erroneous operation prevention
3Measurement precision
If the acceleration detection module operates continuously to detect user activity, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by having the acceleration detection module operate intermittently rather than continuously. The control unit determines whether to activate the acceleration detection module based on current usage conditions (such as whether a restricted area needs to be defined), and the module operates only during periods when user activity detection is necessary, thereby reducing energy consumption while maintaining sufficient measurement precision for accurate user state detection
Data Source
AI summary
A portable phone device includes a display, a touch panel superimposed on the display and configured to detect a touch operation, an area defining module configured to define within the touch panel a restricted area in which acceptance of the touch operation is restricted, and a determination module configured to determine whether or not a screen being displayed on the display is a target screen for defining the restricted area. The area defining module defines the restricted area based on that the screen being displayed on the display is determined to be a target screen by the determination module.