Memory Device Buffer Management for High Frequency Data Read Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Memory systems face challenges in reducing read operation time and workload for memory controllers due to increasing data usage frequencies, as existing technologies do not efficiently manage high usage frequency data.
Innovation Solution
A memory device with a memory block and peripheral circuit that includes buffers to temporarily store and output high usage frequency data, allowing for optimized read operations through normal, backup, and restore read commands, thereby reducing the need for repeated sensing and enhancing data transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If data is read from memory block through sensing operation, then data can be accurately retrieved, but read operation time increases
Solution Approach 1:
The patent performs sensing operations in advance to proactively load frequently accessed data into buffers before it is actually needed. The memory controller identifies high usage frequency data and pre-loads it into buffer memory, so when a read command arrives for this data, it can be served immediately from the buffer without performing a time-consuming sensing operation on the memory block.
Solution Approach 2:
The patent introduces buffer memory as an intermediary layer between the memory block and the external interface. This buffer acts as a cache that stores frequently accessed data, allowing the system to serve read requests from the fast buffer rather than repeatedly accessing the slower memory block through sensing operations.
2Productivity
If sensing operation is performed on memory block, then data can be sensed and output, but workload of memory controller increases
Solution Approach 1:
The memory controller proactively manages the buffer by automatically identifying high usage frequency data and loading it into the buffer without external intervention. This self-service approach allows the controller to optimize data placement based on access patterns, reducing the need for repeated sensing operations and lowering overall workload.
Solution Approach 2:
The system uses feedback from data access patterns to dynamically manage buffer contents. The memory controller monitors which data is frequently accessed and uses this feedback information to make informed decisions about what data to pre-load into the buffer, creating a feedback loop that continuously optimizes performance and reduces controller workload.
3Loss of time
If high usage frequency data is temporarily stored in buffers, then read operation time is reduced, but device complexity increases
Solution Approach 1:
The buffer memory serves multiple functions: it acts as a cache for frequently accessed data, a temporary storage for data being transferred, and a mechanism for reducing read operation times. This multi-functionality justifies the added complexity by providing several performance benefits from a single structural addition.
Data Source
AI summary
The invention relates to a memory device and a memory system having the same. The memory device includes a memory block including a plurality of pages, a peripheral circuit including a plurality of buffers sensing data stored in a selected page of the plurality of pages, temporarily storing high usage frequency data, and outputting the data, and a control circuit controlling the peripheral circuit to output the data after performing a sensing operation on the selected page, storing the high usage frequency data to at least one of the buffers, or outputting the high usage frequency data without performing the sensing operation in response to a read command.


