Touch Sensing Signal Sequencing for Faster Low-Memory Processing
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Solution Overview
Problem
Touch sensing apparatuses face inefficiencies in processing large quantities of synchronization signals due to geometric progression in resource usage and prolonged processing procedures, leading to restricted efficiency and memory usage.
Innovation Solution
A signal processing method that divides sensing signals from multiple points into batches and performs sequential signal processing procedures, utilizing a control unit with a sequence generation component and signal processing components to efficiently process signals in a continuous transient manner, reducing memory requirements and signal transmission time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all sensing signals on the entire panel are processed simultaneously through multiple rounds of signal processing, then comprehensive touch detection is achieved, but processing efficiency is restricted and memory space requirements increase
Solution Approach 1:
The patent divides the entire panel into multiple regions and segments sensing signals by region rather than processing all signals simultaneously. The control unit performs signal processing on segmented regions sequentially or in parallel batches, reducing the memory space required at any given time while maintaining comprehensive touch detection coverage across the entire panel.
2Measurement precision
If multiple rounds of signal processing are performed on sensing signals, then detection accuracy is improved, but processing time increases
Solution Approach 1:
The patent performs preliminary signal processing operations in advance, such as pre-calculating reference capacitance values and preparing processing parameters before actual touch detection. This preliminary preparation reduces the processing time required during actual touch events while maintaining multi-round signal processing for accurate capacitance value detection.
3Reliability
If a relatively large quantity of hardware resources and long processing procedures are used, then signal processing capability is enhanced, but the relative relationship between resource usage and signal quantity presents nearly geometric progression
Solution Approach 1:
The patent implements dynamic signal processing where the control unit adjusts processing parameters, batch sizes, and region divisions based on the actual quantity of sensing signals and touch event characteristics. This dynamic adaptation allows the system to maintain high synchronization signal processing capability while avoiding geometric progression in hardware resource requirements by optimizing resource allocation in real-time.
Data Source
AI summary
A signal processing method for a touch sensing apparatus includes: sequentially dividing sensing signals of a plurality of sensing points on an entire panel into a plurality of signal sequences according to a batch in a signal generation order of the sensing points; and sequentially performing a plurality of signal processing procedures on the signal sequences.