Nonvolatile Memory Turbo Write Buffer Segmentation
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Solution Overview
Problem
Current storage devices face limitations in achieving fast write and read operations, particularly in nonvolatile memory systems, where existing technologies do not efficiently utilize buffer areas to enhance performance.
Innovation Solution
A storage device architecture that includes a nonvolatile memory device with distinct areas for turbo write and read operations, managed by a memory controller, which prioritizes data storage and movement between these areas to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single buffer area is used for both turbo write and normal write operations, then the device complexity is reduced, but the write speed performance deteriorates
Solution Approach 1:
The nonvolatile memory device is divided into multiple buffer areas: a first buffer area for turbo write operations and a second buffer area for normal write operations. This segmentation allows independent optimization of each buffer area's function, enabling high-speed turbo writes in the first area while maintaining normal write functionality in the second area, thereby resolving the contradiction between write speed and device complexity.
Solution Approach 2:
Different buffer areas are assigned different qualities and characteristics: the first buffer area is optimized for high-speed turbo write operations with specific cell configurations, while the second buffer area handles normal write operations. This local quality differentiation allows each area to perform its designated function optimally without compromising the other, achieving high write speed performance without excessive overall complexity.
2Quantity of substance
If multi-level cells are used throughout the storage device, then the storage capacity increases, but the read and write speeds deteriorate
Solution Approach 1:
The memory device is segmented into different regions with different cell types: a first region containing single-level cells for high-speed turbo write operations and a second region containing multi-level cells for high-capacity storage. This spatial segmentation allows the device to simultaneously achieve both high speed and high capacity by utilizing the appropriate cell type in the appropriate region.
Solution Approach 2:
The memory device achieves multi-functionality by combining different cell types in a unified structure: single-level cells provide high-speed write capability while multi-level cells provide high storage capacity. The memory controller manages both cell types coordinates their respective functions, making the overall device universally capable of both high-speed operations and high-capacity storage.
3Productivity
If data is written to multi-level cell areas during turbo write operations, then the storage capacity utilization increases, but the write speed decreases
Solution Approach 1:
During turbo write operations, the memory controller directs data to the first buffer area with single-level cells, excluding the second buffer area with multi-level cells from turbo write operations. This segmentation ensures that high-speed turbo writes only utilize the optimized single-level cell region, maintaining maximum write speed while multi-level cells remain available for normal write operations that prioritize capacity utilization.
Data Source
AI summary
A storage device includes a nonvolatile memory device that includes a first region including memory cells configured to store n-bit data and a second region including memory cells configured to store m-bit data and a memory controller, where n and m are natural numbers and n is less than m. The first region includes a first area and a second area, and the second region includes a third area. The memory controller is configured to perform one of a turbo write operation on the first area or the second area and a normal write operation on the third area, and configured to perform one of a turbo read operation on the first area or the second area and a normal read operation on the third area.