Remote Session Drawing Optimization with Spline Curves
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Solution Overview
Problem
Remote desktop technologies experience user experience degradation due to network latency and delays, particularly in drawing operations where line deviations occur, leading to a poor user experience when attempting to draw on remote applications.
Innovation Solution
A system and method that manage user input by calculating a spline curve based on sequential points to generate simulated input events, ensuring smooth and accurate drawing by injecting these events into the remote server, thereby reducing latency effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct mouse input events are transmitted to the remote server, then the system maintains simplicity in input handling, but network latency causes line deviations and poor drawing accuracy
Solution Approach 1:
The system performs preliminary actions by calculating spline curves and generating simulated input events locally before transmission. Instead of waiting for network round-trip delays, the client device pre-computes the smooth path using Bezier curves based on captured input command data, then transmits these pre-processed events to the remote server, eliminating the latency-induced drawing inaccuracies.
Solution Approach 2:
The patent introduces an intermediary mechanism (spline curve calculation and simulated input event generation) between the raw mouse input and the remote server processing. This intermediary layer transforms discrete, latency-prone mouse events into continuous, smooth drawing paths by interpolating intermediate points along Bezier curves, thereby mediating the conflict between direct input transmission and drawing accuracy.
2Shape
If simulated input events with intermediate points are generated, then drawing smoothness is improved, but input processing complexity increases
Solution Approach 1:
The patent applies curvature principles by using Bezier curves to generate smooth drawing paths. Instead of transmitting discrete linear mouse events, the system calculates curved paths (spline curves) that pass through or near the captured input points, creating visually smooth drawing lines. This curvature-based approach transforms jagged, discrete input into continuous, aesthetically pleasing output.
Solution Approach 2:
The system changes the parameters of input events by interpolating additional intermediate points between captured mouse positions. By modifying the density and distribution of input events (adding more points along the path), the system transforms sparse, discrete mouse movements into dense, continuous drawing trajectories, achieving smoothness without fundamentally changing the input device or interface.
Data Source
AI summary
Systems and methods for managing user input for a remote application session between a client device and a remote server are provided. Input command data is received from a client device for an application executing within a remote session established between the client device and the remote server. The input command data specifies a plurality of points within a graphical user interface where the input command data was captured on the client device. Spline curves are calculated based on a first subset of sequential points from the plurality of points. Simulated input events are generated that specify intermediate points calculated along the spline curves. The simulated input events are injected into the remote server for the application.