Rapid Response Display Controller for Touch Screen Latency
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Solution Overview
Problem
Current touch screen devices experience high latency between touch events and screen responses, leading to user dissatisfaction and reduced productivity, especially in tasks requiring immediate feedback like drawing and writing.
Innovation Solution
A rapid response display controller with a reactive interpretation unit and feedback unit provides an initial fast display representation of touch information, followed by a final, more accurate representation from a routine response controller, reducing latency and enhancing user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a routine response display controller is used to process touch information, then the final display representation can be accurate and complete, but the response latency increases and user feedback is delayed
Solution Approach 1:
The patent divides the display controller into two separate controllers: a rapid response display controller for immediate feedback and a routine response display controller for final accurate rendering. This segmentation allows each controller to specialize in its function, with the rapid controller handling time-critical initial display and the routine controller handling detailed final display, thus resolving the contradiction between speed and accuracy
Solution Approach 2:
The rapid response display controller performs preliminary action by generating an initial display representation immediately upon receiving touch information, before the routine response controller has completed its processing. This preliminary fast display provides immediate user feedback, and the subsequent final display from the routine controller refines the accuracy without compromising the initial response time
2Speed
If touch screen processing is optimized for speed, then response latency is reduced, but display quality and accuracy may be compromised
Solution Approach 1:
The display processing is segmented into two quality levels: the rapid response controller provides a simpler, faster initial display representation, while the routine response controller generates a more accurate final display representation. This segmentation enables the system to deliver both high speed and high quality without compromise
Solution Approach 2:
The rapid response controller creates a copy or approximation of the touch information for immediate display, which is then replaced or refined by the final display representation from the routine response controller. This copying approach allows fast initial feedback while maintaining the option for accurate final rendering
Data Source
AI summary
A touch screen system includes a touch screen that provides touch information in response to a touch event. The touch screen system also includes a rapid response display controller having a reactive interpretation unit that provides an initial display representation of the touch information and a reactive feedback unit that provides the initial display representation to the touch screen for an initial display. The touch screen system further includes a routine response display controller that additionally receives the touch information and provides a final display representation of the touch information to the touch screen for a final display. A method of touch screen display management is also included.