GPIO Signal Confirmation Logic for Digital Noise Reduction
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Solution Overview
Problem
Existing methods for signal noise reduction in digital chips, such as those used in computers, require significant hardware and software resources and lead to inefficiencies and errors due to the need for timer-based delay processes across numerous GPIO pins.
Innovation Solution
A method that reduces signal noise by performing logical operations on recent and previous signals to confirm a new signal, using AND and OR operations to determine consistency, thereby eliminating the need for timer-based methods and reducing program code complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If timer-based delay processes are used for each GPIO pin, then signal noise can be reduced, but hardware resources and software complexity increase significantly
Solution Approach 1:
The patent merges the signal processing function for multiple GPIO pins into a single dedicated processing unit. Instead of having separate timer-based delay circuits for each pin, one processing unit handles all pins by sequentially reading their states and applying the same noise reduction logic, thereby reducing hardware resources while maintaining signal reliability
Solution Approach 2:
The dedicated processing unit is designed to be universal, capable of processing signals from any number of GPIO pins through the same algorithmic approach. This multi-functional unit replaces numerous specialized timer circuits, reducing overall system complexity while maintaining the ability to handle signal noise across all pins
2Reliability
If timer-based methods are used for signal confirmation, then noise reduction is achieved, but program code complexity and resource consumption increase
Solution Approach 1:
The patent replaces the mechanical timer-based delay system with a software algorithm that performs logical operations on sequential signal readings. This substitution eliminates the need for hardware timers and associated program code, reducing resource consumption while achieving the same signal confirmation function through efficient bitwise operations
3Reliability
If separate processing is implemented for each GPIO pin, then individual signal noise can be reduced, but the system becomes inefficient when pins are added
Solution Approach 1:
The processing unit is designed with universal functionality to handle any number of GPIO pins through the same algorithmic approach. When new pins are added to the system, the processing unit automatically incorporates them without requiring additional hardware circuits or program code modifications, maintaining both signal accuracy and system scalability
Data Source
AI summary
A method and system of signal noise reduction used for digital chips to prevent errors when signal noise occurs includes checking whether a recent received signal is logically consistent. If the recent signal is consistent, then the consistent signal is adopted. If the recent signal is not consistent, then a previous confirmed signal is adopted.