Dynamic Grid Density for Cursor Control on Large Displays
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Solution Overview
Problem
Existing user input devices, such as touch screens, face limitations in accuracy and latency, especially when interacting with larger display screens that lack a preexisting link, and are prone to wear and tear, making traditional interaction methods unsatisfactory.
Innovation Solution
A system utilizing a personal mobile computing device with a touch screen and a remote server to control cursor movement on a large display device, employing dynamic grid density that increases towards the edges of the touch screen, allowing for precise cursor control on the large display without relying on the screen size of the associated device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch screen is used as a user input device to control cursor movement on a large display screen, then ease of operation is improved, but measurement precision and interaction accuracy deteriorate
Solution Approach 1:
The patent applies local quality by implementing variable grid density across different regions of the touch screen. The grid density is higher near the edges and lower in the center, allowing users to achieve both coarse navigation (in low-density center regions) and fine precision control (in high-density edge regions) using the same touch interface, thereby resolving the contradiction between ease of operation and measurement precision.
Solution Approach 2:
The patent implements dynamics by making the grid density dynamic rather than static. The system adjusts grid density based on the cursor's position on the large display screen, automatically increasing density when the cursor approaches edges where precision is needed and decreasing density in central areas for easier navigation, thus adapting the measurement precision to the operational context.
2Adaptability or versatility
If a touch screen is used to interact with larger display screens, then adaptability is improved, but measurement precision and interaction accuracy worsen
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the grid density parameter based on cursor position and screen context. The system transforms the fixed grid density parameter into a variable one that changes according to the user's interaction needs, enabling the same touch screen to adapt to different interaction scenarios while maintaining measurement precision through localized high-density grids.
3Ease of operation
If traditional user input devices are used repeatedly by multiple users, then ease of operation is maintained, but reliability deteriorates due to wear and tear
Solution Approach 1:
The patent implements copying by using the mobile device's touch screen as a virtual copy of a physical input device. Instead of relying on physical wear-resistant components, the system creates a software-based touch interface that can be reset and reused indefinitely without degradation, eliminating wear and tear while maintaining ease of operation through familiar touch interactions.
4Device complexity
If a standard touch screen grid density is used uniformly across the screen, then device complexity is reduced, but measurement precision deteriorates at edges
Solution Approach 1:
The patent resolves this contradiction by applying local quality through non-uniform grid density distribution. Rather than using a simple uniform grid across the entire screen, the system implements varying grid densities in different local regions, with higher density near edges for precision and lower density in the center for ease of navigation, accepting the increased complexity as necessary for achieving edge precision.
Data Source
AI summary
A system for controlling cursor movement on an associated large display device using dynamic grid density. The system includes a personal mobile computing device and a remote server. The personal mobile computing device receives input from the user, via a touch screen, to control cursor movement on the associated large display device. The touch screen includes a grid that increases in density towards the edges of the touch screen. The personal mobile computing device sends the user input to the remote server. The remote server calculates corresponding cursor movement on the associated large display device. The dynamic grid density on the touch screen controls how far the cursor on the associated large display device moves in response to the user input on the touch screen. The remote server then send instructions to move the cursor on the associated large display device using to the calculated corresponding cursor movement.