Dual Touch Panel Image Display Device for Unobstructed Manipulation
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Solution Overview
Problem
Conventional image displaying devices with touch panels face challenges in accurately selecting and manipulating image data without obstructing the view, particularly when scaling or rotating images, as the operating finger is hidden from view, limiting the precision and functionality of operations like partial zooming.
Innovation Solution
The implementation of dual touch panels on both the front and back sides of the display device, allowing concurrent detection of touch coordinates to enable precise image manipulation without blocking the view, using the characteristics of human digits to input coordinates accurately on both surfaces with one hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch panel is provided on the display screen to enable image manipulation operations, then operational functionality is improved, but the operating finger blocks the displayed image from view and prevents accurate selection of points for scaling and rotation
Solution Approach 1:
The patent introduces a second touch panel on the rear surface of the device, adding a spatial dimension to the interaction. Users can simultaneously touch the front display surface with one finger and the rear touch panel with the other finger, allowing accurate point selection without blocking the view. The control unit detects coordinates from both surfaces and determines overlapping regions to identify the intended target point for image manipulation operations.
2Ease of operation
If the display unit is made translucent to see the operating finger, then the finger visibility is improved, but the cost increases and the finger still blocks the displayed image from view
Solution Approach 1:
The patent divides the touch input function into two separate segments: a front touch panel for display interaction and a rear touch panel for coordinate input. This segmentation allows the display unit to remain opaque while still enabling accurate point selection through coordinated touches on both surfaces, eliminating the need to make the display translucent.
3Ease of operation
If operation keys are disposed on the rear side of the terminal, then the operator can view the display surface during operation, but the operation pad only serves as a switch and cannot be used as a pointing device for precise area selection
Solution Approach 1:
The rear touch panel is designed with multi-functionality, serving both as a coordinate input device for precise point selection and as a supplementary control interface. By detecting touch coordinates on the rear surface and combining them with front surface touch data, the system enables the rear panel to function as a pointing device for operations like partial zooming while maintaining display visibility.
Data Source
AI summary
Disclosed is an image displaying device including a first touch panel arranged on a display screen and generating first coordinate information representing a first coordinate pair denoting the location of a touch on the panel surface; a second touch panel arranged at the rear of the display screen and generating second coordinate information representing a second coordinate pair denoting the location of a touch on the panel surface; and a control unit detecting concurrent touches on the surfaces of the first and second touch panels and, if the concurrent touches are detected, detecting coordinate pairs overlapping between the first coordinate pairs and the second coordinate pairs to determine whether or not the overlapping coordinate pairs exist in a number not lower than specified. A method of and a program for displaying an image on such an image displaying device are also disclosed.