Multi-Touch Display Control via Shadow Image Feedback
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Solution Overview
Problem
Conventional techniques for distributing images from one information terminal to multiple display devices can result in unintended actions when individual operations are performed on the touch screens, as the system fails to distinguish between simultaneous touch operations on different screens, leading to actions different from the users' intentions.
Innovation Solution
A display control device connected to an information terminal and multiple display devices via a network, which receives image information and coordinate data from touch operations, overlays a shadow image on other screens to indicate the touch position, allowing users to recognize and coordinate their operations, thereby preventing unintended actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an image is distributed from one information terminal to a plurality of display devices, then the user can perform operations on the display through multiple touch screens, but individual operations performed on the touch screens may cause execution of unintended actions
Solution Approach 1:
The system provides visual feedback by overlaying a shadow image on the touch screen where no touch operation is currently being performed. This shadow image indicates the position where a touch operation would be executed, allowing users to see the effect of their touch before actually performing it, thus preventing unintended actions
Solution Approach 2:
The shadow image acts as an intermediary between the user's touch input and the actual execution of the operation. It provides a preview or indication of where the touch will be registered, serving as a mediator that helps users understand the system's response before committing to the action
2Ease of operation
If touch operations are performed on multiple touch screens simultaneously, then user interaction is enhanced, but the system cannot distinguish between operations on different screens leading to mistaken inputs
Solution Approach 1:
The system uses visual differentiation through shadow images to indicate which touch screen and position is currently active. The shadow image provides visual information that helps distinguish between multiple touch operations, preventing confusion about which screen is receiving input
Data Source
AI summary
A display control device according to one embodiment includes a processor. The processor receives image information indicating a first image appearing on a display from an information terminal, controls a first display device and a second display device based on the image information to display the first image on a first touch screen and a second touch screen, receives first coordinate information indicating a contact position on the first image from the first display device when a touch operation that brings a finger or an object into contact is performed in a range in which the first image is displayed in the first touch screen, overlays and displays a second image at a position corresponding to the first coordinate information on the first image displayed on the second touch screen when the first coordinate information is received, and transmits the received first coordinate information to the information terminal.