Memory Controller Data Protection Engine
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Solution Overview
Problem
Existing data protection mechanisms in memory devices often degrade access performance and fail to recover data effectively during write operations, especially when errors occur during data transfer, leading to unrecoverable data errors and time-consuming reorganization processes.
Innovation Solution
A memory controller with a data protection engine and microprocessor that generates protection information based on the status of the memory device, determining which data portions to exclude from protection, and stores this information along with the protection information, allowing for targeted encryption and recovery operations without unnecessary data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data protection mechanisms are implemented in memory devices, then data security is improved, but access performance deteriorates due to additional processing overhead
Solution Approach 1:
The patent applies preliminary action by detecting the memory device status and determining which data portions to exclude from protection operations before the actual write operation occurs. This advance preparation allows the system to skip unnecessary protection processing during the write operation, thereby maintaining access performance while still providing data security for the portions that require protection.
Solution Approach 2:
The patent implements partial action by selectively applying protection operations only to specific portions of data that require protection, rather than processing all data uniformly. The microprocessor determines which data portions should be excluded from protection based on memory device status, and the data protection engine applies protection only to the remaining portions, reducing overall processing overhead while maintaining necessary security.
2Reliability
If protection operations are performed on all data portions, then data security is improved, but time consumption increases due to unnecessary processing
Solution Approach 1:
The patent applies the extraction principle by identifying and separating data portions that do not require protection operations from those that do. The microprocessor extracts the portions to be excluded based on memory device status detection, allowing the data protection engine to focus only on protecting the necessary portions, thereby reducing time consumption while maintaining data security.
Solution Approach 2:
The system performs preliminary detection of memory device status and determination of protection scope before executing protection operations. This advance identification of which data portions to exclude prevents unnecessary processing time during the actual protection operation, reducing overall time consumption while ensuring proper security coverage.
3Reliability
If error detection and recovery processes are implemented, then data reliability is improved, but access performance deteriorates due to additional verification steps
Solution Approach 1:
The patent applies preliminary action by detecting memory device status and determining protection scope before write operations occur. This advance preparation prevents the need for extensive error detection and recovery verification during subsequent read operations, as the system proactively identifies and protects against potential errors before they occur, thereby maintaining data reliability while minimizing performance impact.
Data Source
AI summary
A memory controller coupled to a memory device and configured to control access operations of the memory device includes a data protection engine and a microprocessor. The data protection engine is configured to generate protection information according to data received from a host device. The microprocessor is configured to detect a status of the memory device in response to one or more write operations for writing the data to the memory device, determine whether a portion of the data has to be excluded when generating the protection information corresponding to the data according to the status and accordingly generate a determination result, and store the protection information and the determination result together in the memory device. The determination result indicates which portion of the data is utilized to generate the protection information.