Write Transfer Control for Buffer Space Before Target Operations

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Solution Overview

Problem

Storage devices experience performance degradation due to insufficient free space when securing space for target operations, leading to inefficiencies in data management.

Innovation Solution

The storage device suspends the transmission of ready-to-transfer requests for write commands before initiating target operations, using a buffer memory to manage data transfer and ensure sufficient free space is available.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the controller secures free space by deleting data to execute target operations, then the target operation can be performed, but performance degradation occurs during the deletion process

Engineering Contradiction:

Improveability to execute target operationsVSAvoidperformance during data deletion process

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The controller determines a first time point when target operation is needed and suspends ready-to-transfer request transmission at a second time point (earlier than the first time point) to secure buffer memory space in advance. This preliminary action prevents the need for data deletion during critical operations, thereby avoiding performance degradation while ensuring target operations can be executed when needed.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If the controller suspends transmission of ready-to-transfer requests to secure buffer memory space, then sufficient free space is available for target operations, but write data transmission is delayed

Engineering Contradiction:

Improveavailability of buffer memory spaceVSAvoiddelay in write data transmission

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The controller dynamically manages the suspension and resumption of ready-to-transfer request transmission based on buffer memory space availability and target operation timing. The suspension is temporary and controlled, with automatic resumption after target operation completion, creating a dynamic balance between space security and transmission efficiency.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If the controller deletes data to secure free space for target operations, then the target operation can execute, but previously stored necessary data is lost

Engineering Contradiction:

Improvespace availability for target operationsVSAvoiddeletion of necessary data

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

By determining the first time point for target operation and suspending transmission at an earlier second time point, the controller secures buffer memory space before it is needed, eliminating the need to delete previously stored necessary data while still ensuring adequate space for target operations.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12625818B2Storage device controlling ready-to-transfer request for write command and operating method thereof

Publication Date: 2026.05.12 SK HYNIX INC

AI summary

A storage device receives a write command requesting to write write data from a host, determines a first time point at which a memory starts performing a target operation different from an operation of storing the write data, and, after determining the first time point, suspends transmission of a ready-to-transfer request for the write command from a second time point as a time point earlier than the first time point.