Touch Prediction Software for Latency Compensation
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Solution Overview
Problem
Touch screens experience latency issues, which can impede user interactions and reduce productivity, as the processing of touch inputs is not instantaneous, leading to lag that affects the accuracy and responsiveness of user commands.
Innovation Solution
Incorporating touch prediction software that compensates for latency by predicting subsequent touch positions based on sensed positions and characteristics, such as the number of contact points and trajectory, allowing for improved user interaction by selecting between sensed and predicted positions to enhance the touch screen's responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch input processing is performed through multiple hardware and software components, then the touch screen can recognize different types of touches and provide comprehensive functionality, but latency and lag occur that reduce responsiveness and user experience
Solution Approach 1:
The patent applies preliminary action by predicting future touch positions before the actual touch occurs. The system analyzes current touch position, velocity, and acceleration to calculate where the touch will be in the next time interval, and pre-prepares the corresponding UI state. This allows the display to show the touch feedback at the predicted position rather than waiting for the actual touch to be processed, effectively compensating for processing latency.
2Measurement precision
If the touch processing pipeline includes noise filtering and multiple processing stages, then measurement accuracy of touch positions is improved, but the processing time increases causing perceivable lag
Solution Approach 1:
The patent introduces an intermediary prediction layer between the touch sensing hardware and the UI rendering system. Instead of directly processing raw touch data through the complete pipeline, the system inserts a prediction module that generates predicted touch positions based on motion patterns. This intermediary allows the UI to respond to predicted positions while the full processing pipeline continues to refine actual touch measurements in the background, decoupling response speed from processing accuracy.
3Speed
If the system uses sensed touch positions directly for display feedback, then the response is timely, but the feedback appears lagged to users due to processing delays in the touch pipeline
Solution Approach 1:
The system performs preliminary calculation of predicted touch positions using motion physics models before the actual touch processing completes. By calculating where the touch will be based on current velocity and acceleration vectors, the system can display feedback at the correct perceived position while the full measurement pipeline continues to process. This creates the appearance of instantaneous response while maintaining accurate touch measurement through the complete processing chain.
Data Source
AI summary
A computer configured to selectively use prediction to compensate for a latency of an input device. The input device may be a touch screen. Processing of touch inputs may lead to a latency between the user performing a touch input and the touch screen display responding to the touch input. A touch screen component predicts a subsequent position of a touch contact point based on the sensed positions of the touch contact point. The component may be a software component that provides a predictive output that can be selectively used based on a characteristic of a touch input. The component may be generic such that it may be applied on multiple types of computers equipped with different types of touch sensing hardware configured with any suitable settings. The component's output may be used to control the touch screen display.