One-Handed Gesture Control for Two-Screen Portable Displays
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Solution Overview
Problem
Conventional portable display devices with touch panels are not suitable for one-handed operation, especially when used as mobile terminals or for applications requiring two-screen displays, as virtual keyboards and mice interfere with the view and require a more intuitive input method.
Innovation Solution
A portable display device with a two-screen display unit that recognizes and executes commands based on the position and movement of user's fingers, entering a command-accepting state when a fixed coordinate is pressed and allowing intuitive gestures for page turning, bookmarking, and window changes by associating chronologically changing coordinates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a virtual keyboard or virtual mouse is displayed on the two-screen display to accept input operations, then input functionality is provided, but the view is interfered with and the device is not suitable for one-handed operation
Solution Approach 1:
The patent extracts the input operation functionality from the display area by implementing gesture recognition directly on the touch panel surface. Instead of overlaying virtual keyboards or mice that occupy display space, the system recognizes gestures made by the user's finger or stylus directly on the screen, eliminating the need for dedicated input interface elements and preserving the full display area.
Solution Approach 2:
The patent replaces the mechanical interaction model of virtual keyboards and mice with a direct tactile interaction model. By detecting finger position, movement, and pressing actions directly on the touch panel, the system substitutes the indirect mechanical interface (clicking virtual buttons) with direct tactile gestures, enabling more natural one-handed operation without visual interference.
2Ease of operation
If gesture recognition is always active, then intuitive input is enabled, but false inputs may occur when the device is not being held
Solution Approach 1:
The patent implements preliminary detection of holding state before enabling gesture recognition. The system first determines whether the device is being held by detecting the position and movement patterns of the user's finger on the touch panel. Only after confirming the holding state does the system activate gesture recognition functionality, preventing false inputs from accidental touches when the device is stationary or not being used.
Solution Approach 2:
The patent makes the gesture recognition system dynamic by adjusting its sensitivity and activation state based on the detected holding condition. The system transitions between different operational modes: inactive when not held, active when held, allowing it to adapt to the current usage state and maintain reliability while enabling intuitive input when appropriate.
3Volume of moving object
If the device size is reduced to be held with one hand, then portability is improved, but the display area and input precision are reduced
Solution Approach 1:
The patent replaces traditional coordinate detection methods with advanced touch panel technology that can precisely detect finger position, movement vectors, and pressing力度 even on small surfaces. By utilizing the capacitive or resistive properties of the touch panel, the system achieves high measurement precision for gesture recognition without requiring large display areas, enabling accurate input on compact one-handed device form factors.
Data Source
AI summary
Provided is a portable display device sufficiently small to be held with one hand that enters a state for accepting a gesture when a fixed coordinate position near a central portion between a left display unit (14a) and a right display unit (14b) is pressed with a thumb Ftl of one hand holding the device, and accepts a command for performing such as page flipping processing based on a gesture inputted with an index finger Ffr of the other hand. Thus, it is possible to achieve an interface for input operations suitable for a two-screen display screen, where holding a two-screen portable display device naturally causes the device to enter a command accepting state to allow gesture recognition, and to enter a command non-accepting state when the portable display device is not held, in order to prevent a command from being falsely executed due to an unintended contact and such to the display screen.