Memory Control Unit Prediction of Write Mode Throughput Shifts

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Solution Overview

Problem

Existing memory systems struggle to predict and manage performance changes due to varying available memory space, leading to inefficiencies in system throughput during large data writes.

Innovation Solution

A memory control unit calculates and communicates the available data space to a host device, allowing proactive management of performance modes to maintain optimal throughput by anticipating and avoiding slowdowns through dynamic tracking and garbage collection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the memory device operates without predicting available space, then the device complexity is reduced, but the system throughput deteriorates during large data writes

Engineering Contradiction:
Improvesystem throughputVSAvoidmemory device complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The memory device performs preliminary calculations of available data space before write operations occur. The control unit predicts how much data can be written in burst mode and sustained mode, allowing the host device to plan write operations in advance and avoid performance degradation during actual writes.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The memory device provides feedback to the host device about available data space through status registers. This feedback mechanism enables the host to adjust its write strategy based on current memory conditions, optimizing system throughput without requiring complex host-side prediction algorithms.

Inventive Principle:
Principle #23Feedback

2Productivity

If the memory device calculates and communicates available data space, then the system throughput is improved, but the device complexity increases

Engineering Contradiction:
Improvesystem throughputVSAvoidmemory device complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The memory device performs self-service by autonomously calculating and tracking its own available data space across different performance modes. The control unit monitors memory conditions and updates status registers without external intervention, reducing the need for complex host-device coordination protocols.

Inventive Principle:
Principle #25Self-service

3Productivity

If the host device proactively manages performance modes, then the system throughput is optimized, but the loss of time increases due to monitoring and adjustments

Engineering Contradiction:
Improvesystem throughputVSAvoidtime for monitoring and adjustment
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The host device performs preliminary assessment of available data space before initiating large write operations. By checking status registers in advance and planning write strategies beforehand, the host avoids time-consuming adjustments during active write operations, optimizing overall system throughput.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12554404B2MNAND field to predict device performance
Publication Date: 2026.02.17 MICRON TECHNOLOGY INC
  • US12554404B2 patent drawing
  • US12554404B2 patent drawing
  • US12554404B2 patent drawing

AI summary

A memory device includes a memory array and a memory control unit. The memory array includes memory cells. The memory control unit is configured to calculate an amount of data that can be written by a host device to the memory device in a burst performance mode before changing to sustained performance mode; calculate an amount of data that can be written to the memory device in the sustained performance mode before changing to writing the memory according to a dirty performance mode; and provide results of the calculations to the host device.