Memory Region Partitioning for Unified Parameter Management
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Solution Overview
Problem
In memory devices, analog value variations over time due to factors like charge leakage and temperature distortions degrade readout performance, requiring complex characterization and management of each memory page separately, leading to increased memory overhead and computational complexity.
Innovation Solution
Partitioning memory into regions where all pages are written within a predefined maximum time interval, allowing characterization and management using a single set of parameters, and enabling storage parameter calculation based on a subset of pages, thereby reducing memory space and computational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each memory page is characterized and managed separately to account for analog value variations, then readout performance is maintained, but memory overhead and computational complexity increase
Solution Approach 1:
The patent merges multiple memory pages into a single memory region and applies a unified set of storage parameters to all pages within that region. This is achieved by enforcing a maximum time interval constraint that ensures all pages in a region are written within a short time window, making their analog value variations similar enough to be managed collectively rather than individually.
Solution Approach 2:
The patent changes the management approach from page-level parameters to region-level parameters. By defining storage parameters at the memory region level rather than at the individual page level, the system reduces the number of parameters that need to be tracked and managed, thereby reducing memory overhead and computational complexity while maintaining readout performance through the time interval constraint.
2Adaptability or versatility
If storage operations are performed without time constraints, then storage flexibility is maximized, but analog value variations degrade readout performance
Solution Approach 1:
The patent introduces a dynamic time interval constraint that adapts to the storage operations being performed. The maximum time interval is defined relative to the writing time of pages in a memory region, creating a flexible yet constrained storage model that maintains analog value consistency while allowing reasonable storage flexibility.
Solution Approach 2:
The patent establishes the maximum time interval constraint in advance before storage operations begin. This preliminary definition of the time window allows the system to proactively manage analog value variations by ensuring all pages in a region are written within the acceptable time frame, preventing degradation before it occurs.
Data Source
AI summary
A method includes accepting data for storage in a memory that is partitioned into multiple memory regions. A memory region is selected for storing the data. At least part of the data is stored in the selected memory region, subject to verifying that all the storage operations applied to the selected memory region are performed within a predefined maximum time interval.