Dual Compression Memory Device Storage Capacity

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Solution Overview

Problem

Current memory devices face inefficiencies in physical space utilization due to limitations in data compression techniques, leading to suboptimal capacity utilization and increased storage needs.

Innovation Solution

Implementing a dual compression ratio scheme in memory devices, where data is compressed only if it achieves a compression ratio greater than or equal to a defined threshold, allowing for efficient storage and decompression, and utilizing a Compute Express Link (CXL) system for high-bandwidth connectivity and memory coherency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If data compression is applied to increase storage capacity utilization, then physical space utilization is improved, but device complexity increases due to additional compression logic and processing requirements

Engineering Contradiction:

Improvestorage capacity utilizationVSAvoidcompression logic complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The memory device is divided into distinct regions: a first region for uncompressed data and a second region for compressed data. This segmentation allows the system to apply compression selectively rather than universally, improving storage utilization while avoiding the complexity of compressing all data. The controller manages these regions separately, simplifying the overall compression logic.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of applying compression to all data, the patent applies compression partially - only to data that benefits from it. The controller determines which data should be compressed based on specific criteria, and only applies compression in the second region when advantageous. This partial action approach improves storage capacity without requiring full-system compression complexity.

Inventive Principle:

Principle #16Partial or excessive action

2Quantity of substance

If compression threshold is set low to maximize storage efficiency, then physical capacity utilization is improved, but processing overhead increases due to more frequent compression operations

Engineering Contradiction:

Improvephysical capacity utilizationVSAvoidprocessing overhead

Core Design Contradiction:

Quantity of substanceVSUse of energy by moving object

Solution Approach 1:

The patent introduces a configurable compression threshold parameter that controls when compression should be applied. By adjusting this threshold, the system can balance between storage efficiency and processing overhead. The controller compares the compression ratio against this threshold parameter before deciding to compress data, allowing optimization of the trade-off between physical capacity utilization and processing energy consumption.

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If dual compression ratio scheme is implemented to enhance storage efficiency, then physical capacity utilization is improved by up to 33%, but device complexity increases due to multiple compression regions and management logic

Engineering Contradiction:

Improvephysical capacity utilizationVSAvoidmulti-region management complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system includes automated mechanisms for managing the dual-region compression system. The controller automatically determines when to compress data, manages the allocation between first and second regions, and handles the complexity of multi-region management without requiring external intervention. This self-service approach reduces the operational complexity despite the dual-region architecture.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250094047A1Dual compression in memory devices

Publication Date: 2025.03.20 MICRON TECHNOLOGY INC

AI summary

A variety of applications can include a memory device implementing a dual compression scheme. A memory subsystem of the memory device can be arranged into multiple regions. A first region of the memory subsystem can be used to store non-compressible data. A second region can be used to store compressible data. The second region can have a first subregion and a second subregion. The first subregion can be used to accept compressible data as non-compressed data corresponding to a compression ratio being less than a threshold compression ratio. The second subregion can be used to accept compressed data corresponding to a compression ratio being greater than the threshold compression ratio. Additional apparatus, systems, and methods are disclosed.