Electronic System Error Recovery via Redundant State Storage
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Solution Overview
Problem
Electronic systems, particularly automotive sensors, face errors due to interference and electrical or mechanical overstress conditions, which can lead to malfunctions and safety concerns, with existing technologies lacking effective methods for error detection and recovery.
Innovation Solution
An electronic system comprising digital storage circuitry, operational logic, redundancy logic, and error checking logic to determine and correct errors by generating redundant information and initiating corrective actions, ensuring system stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If digital storage circuitry is used to store operational state information, then the system achieves efficient data storage and processing, but the system becomes vulnerable to errors from interference and overstress conditions
Solution Approach 1:
The patent applies preliminary action by generating redundant information about the operational state before errors can occur. The redundancy logic circuit creates backup information that is stored separately, allowing the system to detect and correct errors that may later affect the primary operational state data, thus preventing error propagation while maintaining efficient digital storage.
Solution Approach 2:
The patent implements copying by creating redundant copies of operational state information through the redundancy logic circuit. This redundant information is stored in separate digital storage circuitry, providing a backup that can be used to detect and correct errors in the primary data, thereby improving reliability without sacrificing storage efficiency.
2Reliability
If redundancy logic is added to generate redundant information, then error detection capability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the error detection function into a separate, dedicated redundancy logic circuit that operates independently from the main operational logic. This modular approach allows the system to gain error detection capability while keeping the complexity localized to a specific circuit module rather than distributing it throughout the entire system.
Solution Approach 2:
The patent uses an intermediary approach by introducing a dedicated redundancy logic circuit that acts as a mediator between the operational logic and the error checking logic. This intermediate component generates redundant information without requiring direct modification of the core operational circuits, thus improving error detection while minimizing overall system complexity.
3Reliability
If error checking logic continuously monitors operational state, then system reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by having the error checking logic circuit periodically compare the operational state information with the redundant information rather than continuously monitoring. This periodic checking approach maintains system reliability by detecting errors when they occur while significantly reducing energy consumption compared to continuous monitoring.
Data Source
AI summary
An electronic system includes circuitry to detect errors in logic state in the system and to initiate corrective action when one or more errors are detected. In some embodiments, redundant information is stored within a system that is associated with an operational state of the system. If the operational state of the system is subsequently corrupted as a result of an electrical or mechanical overstress condition, resulting errors may be detected by comparing or otherwise processing the stored operational state information and the redundant information.