Resistive Memory Data Writing Method with Preliminary Verification
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Solution Overview
Problem
Resistive memory devices experience decreased performance over time due to the introduction of a middle resistance state during cycling, leading to inefficiencies in writing operations, which are further prolonged by the need for repeated verification and writing procedures.
Innovation Solution
A memory device and data writing method that involves performing multiple readings and comparisons to accurately determine the state of a target storage unit before executing a writing operation, thereby confirming the state more accurately and reducing the total writing time while enhancing durability and high temperature data retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeated verification and writing procedures are performed on resistive memory, then data writing reliability is improved, but writing time increases significantly
Solution Approach 1:
The patent performs preliminary verification of the current storage state before initiating the writing operation. By reading the current state and comparing it with the expected state in advance, the system determines whether writing is actually needed, avoiding unnecessary repeated writing cycles and reducing overall writing time while maintaining reliability.
Solution Approach 2:
The patent implements a feedback mechanism where the verification results are used to control subsequent writing operations. The system continuously monitors the storage state during the writing process and adjusts the number of writing cycles based on actual verification outcomes, rather than performing a fixed number of repeated operations.
2Measurement precision
If multiple readings and comparisons are performed before writing, then state confirmation accuracy is improved, but operation complexity increases
Solution Approach 1:
The patent divides the verification process into distinct segments: reading the current state, comparing with expected state, and deciding on writing action. This segmentation allows each step to be handled independently with clear logic, reducing overall operational complexity while maintaining high accuracy in state confirmation.
Data Source
AI summary
A data writing method is provided. According to the present application, the data writing method includes steps of receiving an expected data, performing a plurality of readings on a target storage unit to obtain a plurality of read data; determining whether the plurality of read data are the same as the expected data respectively to generate a plurality of comparison results; and performing a writing operation procedure on the target storage unit according to the plurality of comparison results and the expected data.