Memory System Dynamic Writing Protection
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Solution Overview
Problem
Existing memory systems face errors due to unstable power supplies and control signals during data writing, leading to permanent data corruption or loss, as traditional writing protection schemes often result in unnecessary blank periods where data can be inadvertently overwritten.
Innovation Solution
A memory system with a first control unit for prohibiting data writing during a writing protection period and a second control unit for allowing data writing based on a variable writing period related to the specific data writing process, ensuring the memory device enters a protected state immediately after data is written, thus preventing erroneous writing or erasing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed writing protection period is used, then the memory device is protected during the protection period, but unnecessary blank periods remain where erroneous writing can occur
Solution Approach 1:
The patent applies dynamics by making the writing protection period variable rather than fixed. The protection period dynamically adjusts based on the actual data writing process duration. The controller monitors when data writing is completed and sets the protection period to extend from that completion point until the next scheduled writing operation, thereby eliminating unnecessary blank periods while maintaining adequate protection throughout the actual writing process.
2Ease of operation
If a fixed data writing period is used, then the writing process can be simple, but the memory device may suffer erroneous writing during blank periods when no data writing is performed
Solution Approach 1:
The patent implements feedback by having the controller monitor and detect when the data writing process is actually completed. Based on this feedback information, the controller dynamically adjusts the writing protection period to start exactly when writing completes and continue until the next writing operation. This feedback mechanism ensures protection is active during actual writing operations while eliminating unnecessary blank periods where erroneous writing could occur.
Data Source
AI summary
A memory system is disclosed. The memory system includes a memory device, a first control unit, and a second control unit. The memory device is utilized for storing data. The first control unit is coupled to the memory device for prohibiting a data writing process performed on the memory device during a writing protection period. The second control unit is coupled to the memory device for allowing the data writing process to be performed in the memory device according to a writing period after the writing protection period, wherein the writing period is related to the data writing process.