Display System Indicator Coordinate Conversion
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Solution Overview
Problem
Existing display systems struggle to accurately process the movement of an indicator when it is moved between adjacent images displayed on different devices, leading to recognition issues and inability to perform intended operations.
Innovation Solution
A display system comprising an information processing device, first and second display devices, specifying units for indicator positions, output units for coordinate and identification information, and a conversion unit to align coordinates across different devices, enabling seamless processing of indicator movement between adjacent images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If separate display devices are used to display adjacent images, then display area and functionality are improved, but indicator movement recognition accuracy deteriorates when the indicator moves between devices
Solution Approach 1:
The patent introduces a coordinate conversion unit as an intermediary mechanism that receives indicator position data from multiple display devices, converts the coordinates to a unified reference system, and outputs standardized position information. This mediator resolves the incompatibility of coordinate systems between separate display devices, enabling accurate tracking of indicator movement across device boundaries without requiring the display devices themselves to be physically connected or share a common coordinate system.
Solution Approach 2:
The patent transitions from individual display device coordinate systems to a unified global coordinate system by adding a dimensional layer of coordinate transformation. The conversion unit maps local coordinates from each display device to a common reference frame, effectively adding a transformation dimension that reconciles the spatial relationships between indicators on different devices and enables seamless cross-device interaction.
2Speed
If pen-up and pen-down events are detected based on proximity to bezel, then device interaction responsiveness is improved, but false recognition occurs when indicator moves between adjacent display devices
Solution Approach 1:
The patent implements a feedback mechanism where the coordinate conversion unit continuously receives indicator position information from multiple display devices and maintains an updated understanding of the indicator's global position. This feedback loop enables the system to distinguish between legitimate pen-down events (indicator intentionally placed on a specific device) and false events caused by proximity to bezels, by continuously monitoring whether the indicator's converted coordinates correspond to valid interaction regions on the target device.
Solution Approach 2:
The system dynamically adjusts its event detection behavior based on the indicator's current position and movement context. Rather than using fixed proximity thresholds that trigger pen-up/pen-down events regardless of context, the system dynamically evaluates the indicator's position relative to display device boundaries and content regions, adjusting its interpretation of user intent based on real-time spatial information and movement history.
Data Source
AI summary
Each projector specifies coordinates of a position which is indicated by an indicator, and outputs coordinate information representing the coordinates which are specified, and identification information identifying a display position of the image. An information processing device includes a conversion unit converting the coordinate information into coordinate information representing coordinates in a coordinate system of the information processing device on the basis of the identification information.