Storage Device Receiving Circuit Abnormality Detection

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Solution Overview

Problem

Existing storage devices face challenges in detecting abnormalities in receiving circuits, leading to potential signal quality degradation and system failures, particularly at higher interface speeds.

Innovation Solution

Incorporating a decision feedback equalization (DFE) circuit with a feedback filter and a parameter management system that transmits correction factors to the host system, allowing for abnormality detection based on parameter values and their history, enabling early detection of signal quality issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the interface speed is increased to improve data transmission performance, then productivity is improved, but the receiving circuit becomes more susceptible to abnormalities and signal quality degradation

Engineering Contradiction:

Improvedata transmission speedVSAvoidreceiving circuit stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by performing abnormality detection on the receiving circuit before it causes actual data transmission failures. The detection mechanism monitors receiving circuit parameters in advance and identifies degradation trends, allowing the system to take preventive measures before reliability is compromised at high interface speeds.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback by continuously monitoring the receiving circuit's operational parameters and using this information to detect abnormalities. The detection mechanism provides real-time feedback on receiving circuit health, enabling the system to identify and respond to degradation caused by high-speed operation.

Inventive Principle:

Principle #23Feedback

2Reliability

If abnormality detection capabilities are added to the storage device, then reliability is improved, but device complexity increases

Engineering Contradiction:

Improveabnormality detection capabilityVSAvoidcircuit structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing the abnormality detection mechanism to share resources with existing storage device functions. The detection circuit leverages existing signal paths and processing resources, allowing one detection system to monitor multiple receiving circuit parameters simultaneously, thereby reducing overall device complexity while maintaining comprehensive monitoring capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements self-service by enabling the receiving circuit to perform its own abnormality detection using internally available parameters. The detection mechanism utilizes the receiving circuit's own operational data without requiring extensive external monitoring equipment, allowing the circuit to self-diagnose and report abnormalities.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10635514B2Storage device, host system, and information processing system

Publication Date: 2020.04.28 KIOXIA CORP

AI summary

A storage device includes a receiving circuit including a correction circuit configured to correct an input signal from a host system based on correction factors and output the corrected input signal as an output signal containing a data value that is to be stored in the storage device, an interface controller configured to adjust the correction factors based on a difference value generated by the correction circuit using the output signal, and a transmission circuit configured to transmit the correction factors to the host system.