Syndrome Check Circuitry for Distinguishing Memory-Host Error States
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Solution Overview
Problem
Existing memory systems lack the capability to differentiate between various combinations of errors detected by the memory system and the host system, leading to inadequate diagnostic information and potential introduction of additional errors during error correction.
Innovation Solution
Incorporating syndrome check circuitry that includes additional circuitry such as logic gates and inverters to compare signals from the memory system and the host system, allowing for differentiation between different error combinations and improved diagnostic capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If syndrome check circuitry is added to differentiate between error types, then diagnostic precision and reliability are improved, but device complexity increases
Solution Approach 1:
The syndrome check circuitry is segmented into distinct functional blocks: syndrome calculation units for both memory system and host system, separate comparison logic for different error combinations, and individual detection paths for each error type. This segmentation allows the complex error differentiation function to be implemented through modular, manageable components rather than a monolithic complex circuit.
Solution Approach 2:
The patent introduces an intermediary syndrome check circuitry that sits between the memory system and host system, acting as a mediator to compare syndromes from both sides. This intermediary component enables error differentiation without requiring direct complex interaction between the memory system and host system error detection mechanisms, simplifying the overall system architecture.
2Reliability
If traditional error correction is performed without error type differentiation, then processing speed is maintained, but additional errors may be introduced
Solution Approach 1:
The syndrome check circuitry performs preliminary error type differentiation before error correction is executed. By identifying the specific combination of errors (memory system only, host system only, both, or neither) in advance, the system can select appropriate correction strategies that avoid introducing additional errors, rather than applying generic correction that might harm the data further.
Solution Approach 2:
The patent implements a feedback mechanism where the syndrome check circuitry continuously monitors and compares error syndromes from both the memory system and host system. This feedback loop provides real-time information about error states, enabling dynamic adjustment of error correction actions to prevent the introduction of additional errors while maintaining high data transfer reliability.
Data Source
AI summary
Methods, systems, and devices for syndrome check functionality to differentiate between error types are described. A host system, a memory system, or some combination of both may include syndrome check circuitry to provide enhanced error diagnostic capabilities for data communicated between the host system and the memory system. The syndrome check circuitry may receive a first signal from the memory system indicating whether the memory system detected and attempted to correct an error in the data and may receive a second signal from the host system indicating whether the host system detected an error in the received data. The syndrome check circuitry may compare the first signal and the second signal using a set of logic gates to differentiate between different combinations of errors detected at one or both of the memory system or the host system.