Visual Accelerator Bypasses OS for Touch Display Latency
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Solution Overview
Problem
Touch display devices experience significant latency in responding to user inputs due to the signal path passing through various processing circuits, resulting in perceived slow response times.
Innovation Solution
Incorporating a visual accelerator that creates a dedicated first signal path bypassing the operating system, allowing for immediate visualization of touch inputs within a designated visual acceleration area, thereby reducing latency by processing touch information independently of the data processing unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the touch signal passes through various processing circuits and applications before reaching the display, then the data processing is comprehensive, but the response time increases significantly
Solution Approach 1:
The patent divides the signal processing path into two separate paths: a first path for visual output that bypasses the operating system and application layers, and a second path for data processing that goes through the operating system and applications. This segmentation allows the visual response path to be optimized for speed while the data processing path handles comprehensive processing, resolving the contradiction between response time and processing comprehensiveness.
Solution Approach 2:
The patent introduces a visual accelerator as an intermediary component between the touch sensor and the display. This visual accelerator creates a dedicated first signal path that processes touch signals for visual output without routing through the operating system and application layers, thereby reducing latency while maintaining the ability to display comprehensive touch information.
2Measurement precision
If the touch signal passes through the operating system and application layers, then the data processing is thorough, but the latency time increases
Solution Approach 1:
The patent segments the signal processing into two independent paths: the first path for visual output bypasses the operating system and application layers to minimize latency, while the second path processes data through these layers for comprehensive analysis. This allows the system to achieve both fast visual response and thorough data processing simultaneously.
Solution Approach 2:
The patent extracts the visual processing function from the main data processing path by introducing a separate visual accelerator and first signal path. This extraction removes the operating system and application layer processing steps from the visual response path, thereby reducing latency while maintaining the ability to display accurate touch information.
Data Source
AI summary
A touch display device includes a touch sensor, a visual accelerator, and a display. The touch sensor senses a touch. The visual accelerator visualizes the touch. The display displays information corresponding to the visualized touch. When the touch is outside a visual acceleration area, the visual accelerator does not process the touch. When the touch is in the visual acceleration area, the visual accelerator visualizes the touch on the display.