Synchronizing Digital Ink Stroke Rendering via Unique Identifiers
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Solution Overview
Problem
Collaborative computing systems face challenges in synchronizing ink rendering across multiple devices, leading to delays, jitter, and visual artifacts, particularly when handling ink sources from various devices and users, which detracts from the collaborative experience.
Innovation Solution
The implementation of a system that uses a global unique identifier to differentiate ink strokes and allocate processing resources dynamically, prioritizing uncommitted ink data for smooth rendering and efficiently managing resource allocation between in-process and completed ink strokes, ensuring synchronous and incremental rendering across devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple ink sources from different devices and users are handled simultaneously, then collaborative ink rendering capability is improved, but rendering delays and visual artifacts increase
Solution Approach 1:
The patent segments ink stroke data by assigning unique identifiers to differentiate between multiple ink sources (different devices, users, fingers, pens). This segmentation allows the system to track and render each ink source independently, preventing mixing of ink data and eliminating visual artifacts while maintaining collaborative rendering capability across multiple participants.
2Reliability
If ink strokes are rendered synchronously across multiple devices, then collaborative interaction quality is improved, but processing resource allocation complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where ink stroke data is transmitted from source devices to target devices, and the rendering status is tracked using unique identifiers. This feedback loop enables synchronous rendering by allowing devices to coordinate their rendering actions based on received ink data and status updates, achieving coordination without requiring complex centralized resource management.
3Reliability
If processing resources are dynamically allocated to prioritize uncommitted ink data, then rendering smoothness is improved, but system complexity increases
Solution Approach 1:
The patent dynamically adjusts processing resource allocation based on the commitment status of ink data. Uncommitted ink data (in-progress strokes) receives higher processing priority to ensure smooth rendering without gaps or jitter, while committed ink data (completed strokes) uses standard processing. This dynamic prioritization mechanism achieves smooth rendering by adapting resource allocation to the real-time state of ink operations without requiring complex manual resource management.
Data Source
AI summary
A method for operating a computing system is provided. The method includes at a local computing device and while an ink input is occurring, rendering a local uncommitted ink stroke on a local display based on the ink input and sending uncommitted ink data corresponding to the uncommitted ink stroke to a remote computing device, the uncommitted ink data including an uncommitted ink stroke path and a global unique identifier differentiating the uncommitted ink data from other uncommitted ink data corresponding to different computing devices and ink inputs. The method further includes responsive to receiving an ink stroke commitment input, rendering a local committed ink stroke on the local display and sending committed ink data including an ink commitment command and the global unique identifier associated with the uncommitted ink stroke path to the remote computing device.