Dynamic Superblock Construction for Memory Garbage Collection
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Solution Overview
Problem
Conventional memory devices use statically constructed superblocks for garbage collection, which can lead to inefficient data relocation and management, especially when blocks have varying amounts of valid data, resulting in suboptimal use of memory space.
Innovation Solution
A memory controller dynamically constructs superblocks based on the amount of valid data in each physical block during each garbage collection process, selecting blocks across multiple dies and channels to minimize data relocation and optimize free space creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If statically constructed superblocks are used for garbage collection, then the memory management structure is simple and stable, but the data relocation efficiency deteriorates when blocks have varying amounts of valid data
Solution Approach 1:
The patent applies the dynamics principle by transitioning from static superblock construction to dynamic superblock construction. The memory controller now dynamically determines superblock composition based on the amount of valid data in each physical block at the time of garbage collection, allowing the superblock structure to adapt to varying data distribution patterns and improve relocation efficiency while maintaining operational stability through controlled dynamic adjustment.
Solution Approach 2:
The patent implements parameter changes by modifying the superblock construction parameters from fixed static values to dynamic values based on valid data amounts. The memory controller evaluates the valid data quantity in each physical block and adjusts superblock composition accordingly, changing the structural parameters of garbage collection to optimize performance for different data distribution scenarios.
2Ease of manufacture
If statically constructed superblocks are used, then the firmware implementation is simpler, but the memory space utilization becomes suboptimal
Solution Approach 1:
The patent applies dynamics by making superblock construction adaptive rather than fixed. The memory controller dynamically evaluates physical blocks and adjusts superblock composition based on current valid data amounts, enabling optimal memory space utilization while maintaining manageable firmware complexity through algorithmic adaptation rather than hard-coded static structures.
Solution Approach 2:
The patent changes the parameters of superblock construction from static firmware-defined values to dynamic values determined at runtime based on actual data distribution. This allows the system to optimize memory space utilization by adjusting superblock parameters according to the actual amount of valid data in each block, rather than relying on predetermined static configurations.
3Productivity
If dynamic superblocks are constructed based on valid data amounts, then the data relocation efficiency is improved, but the computational complexity of garbage collection increases
Solution Approach 1:
The patent applies preliminary action by having the memory controller evaluate and determine the valid data amounts in physical blocks before constructing superblocks for garbage collection. This preliminary assessment allows the system to identify the most suitable blocks for inclusion in superblocks, optimizing data relocation efficiency while managing computational complexity through advance planning rather than reactive adjustments.
Solution Approach 2:
The patent implements parameter changes by using the evaluated valid data amounts as dynamic parameters for superblock construction. The memory controller adjusts superblock composition based on these parameters, achieving improved relocation efficiency while controlling computational complexity through systematic parameter-based decision-making rather than complex adaptive algorithms.
4Quantity of substance
If dynamic superblock construction is implemented, then the free space creation is optimized, but the memory controller operational complexity increases
Solution Approach 1:
The patent applies preliminary action by having the memory controller assess physical blocks and determine their suitability for superblock construction before executing garbage collection. This preliminary evaluation optimizes free space creation by identifying the best candidate blocks in advance, while managing operational complexity through structured assessment procedures rather than ad-hoc decision-making.
Solution Approach 2:
The patent implements parameter changes by using valid data amounts as dynamic parameters to guide superblock construction for optimized free space creation. The memory controller adjusts its operational parameters based on the evaluated data distribution, achieving efficient free space generation while controlling operational complexity through parameter-driven decision-making.
Data Source
AI summary
A memory device includes a memory array having non-volatile memory cells, and a memory controller configured to dynamically construct a superblock during each garbage collection process based, at least in part, on an amount of valid data present in each physical block of the memory array. Another memory device includes physical blocks of memory cells and a memory controller configured to construct a new superblock dynamically each time garbage collection occurs for the physical blocks regardless of whether any physical blocks are determined to be bad. Additional methods for managing operation of a memory device and related electronic systems are also described.