Memory Disturbance Mitigation Using Resource-Aware Row Criteria
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Solution Overview
Problem
Increasing chip density in memory devices leads to electromagnetic coupling between adjacent memory cells, causing interference and voltage fluctuations that result in memory errors and data loss, and existing mitigation methods can lead to a denial-of-service situation due to excessive resource utilization.
Innovation Solution
Implement usage-based disturbance circuitry that dynamically adjusts mitigation criteria based on resource availability, performing proactive mitigation using a less strict secondary criterion when resources are ample and switching to a stricter primary criterion when resources are limited to prevent denial-of-service situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If chip density is increased to improve memory capacity, then storage capability is improved, but electromagnetic coupling between adjacent memory cells increases causing interference and voltage fluctuations
Solution Approach 1:
The patent introduces usage-based disturbance circuitry as an intermediary mechanism that monitors resource availability and dynamically adjusts mitigation criteria. This circuitry acts as a mediator between the high-density memory cells and the interference they generate, selectively applying mitigation techniques based on current resource conditions to reduce electromagnetic coupling effects without sacrificing capacity.
Solution Approach 2:
The patent dynamically changes the mitigation criteria parameters based on resource availability. When resources are abundant, less strict mitigation criteria are applied; when resources are limited, stricter criteria are enforced. This parameter adjustment allows the system to adapt to varying conditions and prevent denial-of-service situations while maintaining high memory capacity.
2Reliability
If proactive mitigation is performed using less strict secondary criterion when resources are ample, then interference mitigation effectiveness is improved, but resource utilization increases risking denial-of-service situations
Solution Approach 1:
The patent implements dynamic adjustment of mitigation criteria based on real-time resource availability monitoring. The usage-based disturbance circuitry continuously assesses resource conditions and switches between primary (stricter) and secondary (less strict) mitigation criteria accordingly. This dynamic approach allows the system to optimize reliability when resources permit while preventing resource exhaustion that could lead to denial-of-service conditions.
Solution Approach 2:
The patent incorporates feedback mechanisms where the usage-based disturbance circuitry monitors resource consumption and adjusts mitigation criteria based on this feedback. When resource utilization reaches certain thresholds, the system provides feedback to switch from secondary to primary mitigation criteria, ensuring that resource consumption remains within safe limits while maintaining effective interference mitigation.
3Productivity
If stricter primary criterion is used for usage-based disturbance mitigation, then resource consumption is reduced, but interference mitigation effectiveness decreases
Solution Approach 1:
The patent dynamically selects between primary and secondary mitigation criteria based on resource availability conditions. When resources are limited, the stricter primary criterion is applied to ensure resource efficiency. When resources are abundant, the system transitions to the less strict secondary criterion to enhance interference mitigation effectiveness. This dynamic selection resolves the contradiction by adapting to real-time conditions.
Solution Approach 2:
The patent performs preliminary assessment of resource availability before selecting mitigation criteria. The usage-based disturbance circuitry evaluates current resource conditions in advance and proactively chooses the appropriate mitigation approach. This preliminary action allows the system to optimize the balance between resource efficiency and mitigation effectiveness before resource constraints or interference issues arise.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces the probability of denial-of-service situations by efficiently utilizing resources and proactively mitigating interference, thereby enhancing memory device reliability and preventing data loss.
Implementation Method 1
Increasing chip density in memory devices leads to electromagnetic coupling between adjacent memory cells, causing interference and voltage fluctuations
Data Source
AI summary
Apparatuses and techniques for implementing aspects of proactive usage-based disturbance mitigation based on resource availability are described. In an example aspect, usage-based disturbance circuitry of a memory device performs usage-based disturbance mitigation based on multiple criteria. A primary criterion is associated with normal usage-based disturbance mitigation and can enable the memory device to balance power consumption with usage-based disturbance mitigation. At least one secondary criterion is less strict compared to the primary criterion. While a resource is available, the usage-based disturbance circuitry can proactively mitigate usage-based disturbance based on activated rows that satisfy the secondary criterion but don't yet satisfy the primary criterion. With these preemptive measures, the usage-based disturbance circuitry can reduce a probability of a waterfall event causing a denial-of-service (DOS) situation while the resource is available. If the resource becomes limited, the usage-based disturbance circuitry temporarily disables proactive usage-based disturbance mitigation until the resource becomes available again.