Memory Data Line Updating for Unauthorized Access Blocking
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Solution Overview
Problem
Memory devices face unauthorized access threats, as existing security measures are often implemented at the host level, leaving vulnerabilities such as providing valid data after detecting unauthorized access commands and lacking direct inhibition of data lines to prevent data output.
Innovation Solution
A memory device with integrated security measures verifies access commands using credentials stored in registers, inhibiting unauthorized access by changing data patterns output from data lines and preventing row activation, even if keeper latches are accessed, to maintain data security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If security measures are implemented at the host level, then ease of operation is improved, but reliability deteriorates due to vulnerabilities in data output
Solution Approach 1:
The patent introduces an intermediary security mechanism at the memory device level that acts as a mediator between the host and the memory array. This intermediary layer verifies credentials and controls data line outputs, preventing unauthorized data access while maintaining ease of operation through automated security checks.
Solution Approach 2:
The security function is segmented from the host system and placed directly within the memory device. This segmentation allows independent security verification at the memory level, improving reliability by creating a separate security enforcement point that does not depend on host-level security implementation.
2Reliability
If data lines are inhibited to prevent unauthorized data output, then reliability is improved, but loss of information increases due to potential blocking of valid data
Solution Approach 1:
The system performs preliminary credential verification before inhibiting data lines. By checking credentials in advance and only blocking data lines when unauthorized access is detected, the system ensures reliability through prevention while avoiding loss of information by allowing legitimate data access to proceed without interruption.
Solution Approach 2:
The security mechanism uses feedback from credential verification to dynamically control data line inhibition. When credentials are valid, data lines remain active and information flows normally. When credentials are invalid, feedback triggers data line inhibition to prevent unauthorized data output, thus balancing reliability with information availability.
Data Source
AI summary
Apparatuses and methods related to updating data lines for data generation in, for example, a memory device or a computing system that includes a memory device. Updating data lines can include updating a plurality of data lines. The plurality of data lines can provide data form the memory array responsive to a receipt of the access command. The plurality of data lines can also be updated responsive to a determination that an access command received at a memory device is unauthorized.