Low-Power Circuit Configuration Error Detection
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Solution Overview
Problem
Networked devices with reduced power consumption modes are susceptible to interference that can corrupt configuration information, leading to errors when exiting low-power states, which can cause system instability and require time-consuming resets in critical systems.
Innovation Solution
Incorporating error detection and correction circuitry that determines and stores redundancy information before entering a low-power state, allowing for error detection and correction upon exiting the state, thereby ensuring reliable configuration restoration without the need for system resets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the circuit enters a low-power state to reduce energy consumption, then energy efficiency is improved, but the configuration information stored in memory may be corrupted by interference during the low-power state
Solution Approach 1:
The patent applies preliminary action by calculating and storing redundancy information (such as checksums or error correction codes) in the memory along with the configuration information before the circuit enters the low-power state. This preliminary preparation enables error detection and correction capabilities to be activated when the circuit exits the low-power state, ensuring configuration information integrity without requiring system resets.
2Reliability
If error detection and correction circuitry is added to ensure configuration information integrity, then system reliability is improved, but device complexity increases
Solution Approach 1:
The patent uses redundancy information as an intermediary mechanism that mediates between the configuration information and the error detection/correction process. The redundancy bits serve as a buffer or mediator that carries error detection and correction capabilities without requiring complex additional circuitry. This intermediary approach enables reliable error handling while maintaining relatively simple circuit implementation.
3Use of energy by moving object
If configuration information is restored from memory after exiting low-power state, then power efficiency is improved, but errors in the restored configuration can cause system instability requiring time-consuming resets
Solution Approach 1:
The patent implements feedback by using the stored redundancy information to verify the integrity of configuration information after it is restored from memory following exit from low-power state. The error detection circuitry compares the restored configuration information against the stored redundancy data, providing feedback on whether the restoration was successful. This feedback mechanism enables immediate error detection and correction without requiring time-consuming system resets, thus reducing downtime while maintaining power efficiency.
Data Source
AI summary
Techniques for establishing a network connection via a physical medium after exiting a low-power state. The technique includes receiving circuit configuration information for configuring a circuit for establishing a network connection via a physical medium. The technique also includes determining first redundancy information based on the circuit configuration information. The technique also includes storing the determined first redundancy information and the circuit configuration information. The technique also includes entering, by the circuit, a low-power state, and exiting the low-power state. The technique also includes determining second redundancy information based on the stored circuit configuration information after the circuit has exited the low-power state. The technique also includes comparing the second redundancy information to the first redundancy information. The technique also includes detecting an error based on the comparing. The technique also includes outputting an indication of the detected error.