Touch Panel Movable Region Segmentation for Drag Operation Control
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Solution Overview
Problem
Conventional electronic devices with touch panels face reduced operability due to unintended stopping of display objects when their drag operations approach or exceed the boundaries of the movable area, limiting the effective range for touch operations.
Innovation Solution
A display device with a processor and memory that distinguishes between tap and drag operations, allowing the display object to move within a defined movable region while preventing movement outside this region, thereby enhancing touch operation usability by utilizing the wider detectable region for touch inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display object is allowed to move freely across the entire detectable region, then the touch operation range is expanded, but the display object may stop unintentionally at region boundaries reducing operability
Solution Approach 1:
The display area is divided into two distinct regions: a movable region where the display object can be dragged, and a detectable region that is larger and includes the movable region. This segmentation allows the system to differentiate between operations intended to move the object and those intended for other purposes, preventing unintended stops at boundaries.
Solution Approach 2:
Different regions of the display have different functional properties. The movable region has the property of allowing object movement, while the detectable region has the property of accepting touch inputs but not necessarily moving the object. This local differentiation resolves the contradiction by providing appropriate behavior in each region.
2Reliability
If the display object movement is restricted to a small movable region, then unintended stops are prevented, but the effective range for touch operations is limited
Solution Approach 1:
The solution extends the touch interaction model by introducing a hierarchical relationship between two regions: the movable region (second region) and the detectable region (first region). The detectable region serves as an extended input zone that accepts touches without requiring the object to move, while the movable region maintains the traditional drag-to-move behavior. This dimensional extension resolves the contradiction by providing both restricted movement safety and expanded operational range.
Data Source
AI summary
A display device displays a display object on a display part, controls a display on the display part, detects an indicator contacts the display part, and determines an input operation to the display part based on a detection result in the detecting. The display includes a first region being a detectable region and a second region being a part of the first region and a movable region where the display object moves according to the input operation. When a tap operation is detected, the display object is moved to coordinates of the tap operation being in the second region, and the display object is not moved toward coordinates of the tap operation being outside the second region. When a drag operation is detected, the display object is moved within the second region in accordance with a coordinate change due to the drag operation in the first region.