Memory Controller HPB Entry Generation for Faster Lookup
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing data storage devices face significant performance issues due to time-consuming lookup operations in mapping tables as the memory size increases, affecting read speed and access performance.
Innovation Solution
A data processing method that configures a memory block as an active block to record logical addresses in a first mapping table and updates a second mapping table based on the first, generating Host Performance Booster (HPB) entries to improve read speed by delivering these entries to the host device, thereby optimizing the mapping information for faster data access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mapping table is used to record mapping relationships between physical addresses and logical addresses, then the data storage device can manage memory spaces, but the lookup operation becomes time-consuming as the table size increases
Solution Approach 1:
The patent divides the mapping table into multiple sub-mapping tables, each managing a specific memory space or address range. This segmentation reduces the size of individual lookup tables, allowing faster search operations while maintaining comprehensive memory management coverage across all memory spaces.
Solution Approach 2:
The patent pre-calculates and stores mapping relationships in an optimized format before actual data access occurs. By preparing mapping information in advance and organizing it in a structure that facilitates quick retrieval, the system reduces lookup time during actual read operations without compromising memory management capability.
2Quantity of substance
If the mapping table size increases to accommodate larger memory size, then more memory spaces can be managed, but the time required for looking up or searching in the mapping table increases enormously
Solution Approach 1:
The patent segments the large mapping table into multiple smaller sub-tables, each handling a portion of the total memory space. This allows the system to support large memory capacities while keeping individual lookup operations fast, as the search is confined to smaller sub-tables rather than the entire mapping table.
Solution Approach 2:
The patent introduces a hierarchical or multi-dimensional structure to the mapping table organization. By adding another dimension (such as memory space identifier or address range partitioning), the system can quickly narrow down the search space and locate the relevant sub-table, reducing search time while maintaining support for large memory capacities.
Data Source
AI summary
A data storage device includes a memory device and a memory controller. The memory controller is configured to configure a predetermined memory block as an active memory block to receive data from a host device and accordingly record a plurality of logical addresses in a first mapping table. In response to a determination of recommending for activating one or more sub-regions of the memory device or delivering one or more Host Performance Booster (HPB) entries is required, the memory controller is further configured to update a second mapping table based on the first mapping table before delivering the HPB entries to the host device. The memory controller is further configured to generate the HPB entries according to the second mapping table after the second mapping table has been updated based on the first mapping table and deliver a packet comprising the HPB entries to the host device.