Remote Memory Diagnostics via Encrypted Data Transmission
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Solution Overview
Problem
Current methods for diagnosing memory array devices in automotive systems detect errors only after failure, leading to significant delays and costs due to the need for physical removal and shipping of memory units for testing, and do not allow for proactive corrective actions.
Innovation Solution
A system and method for securely and remotely diagnosing memory devices using encrypted diagnostics data transmitted from a remote server to the memory device, which decrypts and analyzes the data to assess the health of memory cells, allowing for early detection of degradation and mitigation of failures before they occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If memory units are physically removed and shipped to ATE for debugging, then failure analysis can be performed, but it takes significant time and increases costs
Solution Approach 1:
A remote server acts as an intermediary between the memory device and the diagnostic system. The server receives encrypted diagnostic data from the memory device via encrypted channels, decrypts it, and performs failure analysis remotely, eliminating the need to physically remove and ship memory units while maintaining secure diagnostic capabilities
Solution Approach 2:
The patent replaces the mechanical process of physically removing and shipping memory units with an electronic/digital system. Diagnostic data is transmitted electronically through encrypted channels to a remote server, substituting the physical logistics chain with a digital data transmission system that achieves the same diagnostic goal without time loss
2Measurement precision
If memory units are removed from the system for testing, then diagnostics can be performed, but corrective actions cannot be taken before failure
Solution Approach 1:
The system performs preliminary diagnostic actions by continuously monitoring memory device health through encrypted diagnostic data transmission. By detecting degradation trends before failure occurs, the system enables proactive corrective actions to be taken while the device is still operational, preventing catastrophic failures before they happen
Solution Approach 2:
The patent implements a feedback mechanism where diagnostic data is continuously collected from the memory device, analyzed by the remote server, and used to assess device health. This feedback loop enables ongoing monitoring and early detection of degradation, allowing the system to respond to potential failures before they occur rather than waiting for actual failure events
3Reliability
If memory diagnostics are performed in a secure environment, then code security is maintained, but data access is restricted
Solution Approach 1:
The remote server serves as a secure intermediary that handles all data access operations. The memory device transmits encrypted diagnostic data to the server, which maintains the security credentials and cryptographic keys. This allows the server to decrypt and analyze the data while the memory device itself never exposes its security credentials, maintaining code security while enabling remote data access
Solution Approach 2:
The patent extracts the security-sensitive cryptographic operations from the memory device and places them in the remote server environment. The memory device only performs encrypted data transmission, while the server handles decryption and analysis. This separation allows secure code to remain protected in the device while enabling accessible analysis in the server environment
Data Source
AI summary
Disclosed are systems and methods for diagnosing the health of a plurality of memory cells in a memory array. Diagnostics are initiated from a remote server via an encrypted channel on the memory device embedded in an end-use system. The memory device includes a plurality of memory cells in a memory array. At the remote server, encrypted diagnostics data is received in response to execution of a diagnostics program by the memory device on the plurality of memory cells. The diagnostics data pertains to the health of the memory cells. The encrypted diagnostics data is decrypted into decrypted diagnostics data and the decrypted diagnostics data is analyzed to determine the health of the memory cells. Failure mitigation is performed for the memory device if the analyzing indicates unhealthy memory cells.