3D Laminated Memory Redundancy via Segmented Processors
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Solution Overview
Problem
Three-dimensional laminated memory technologies lack a mechanism for ensuring data stability and functional safety, particularly in vehicle operation systems, where data integrity and redundancy are critical for operational reliability.
Innovation Solution
A redundancy method and system that employs three processors with dedicated data buses and a result value comparator to compare and decide operation results, ensuring functional safety by isolating and comparing data processing outcomes across physically isolated processors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three processors with dedicated data buses and result value comparator are implemented, then functional safety and data stability are improved, but device complexity increases
Solution Approach 1:
The system divides the processing function into three separate processors (first, second, and third processors) that are physically isolated from each other. Each processor independently performs the same data operation, and their results are compared by a result value comparator to ensure functional safety through redundancy and voting mechanism.
Solution Approach 2:
A result value comparator is introduced as an intermediary component that receives operation result values from all three processors, compares them, and outputs the correct result based on majority voting. This mediator resolves the complexity of direct processor interaction while ensuring reliable output.
2Reliability
If dedicated data buses are allocated to each processor, then data stability is improved, but manufacturing cost increases
Solution Approach 1:
The data bus system is segmented into dedicated data buses for each processor (second processor has its own dedicated data bus, third processor has its own dedicated data bus). This physical separation ensures that data transmission for each processor is independent and protected from interference, thereby improving data stability.
3Reliability
If physically isolated processors are used for redundancy, then functional safety is improved, but device complexity increases
Solution Approach 1:
The processors are physically isolated from each other, with each processor being a separate physical entity. This segmentation provides inherent redundancy and fault isolation, where a failure in one processor does not affect the others, thereby improving functional safety.
Solution Approach 2:
The same data operation is copied and executed independently by three separate processors. The result value comparator then compares these copied operations' results to determine the correct output, ensuring functional safety through redundant execution.
Data Source
AI summary
A redundancy method of a three-dimensional laminated memory includes receiving, by first, second and third processors, a command for data operation, transmitting and receiving, by each of the second and third processors, data through dedicated data buses in order to perform the data operation, receiving, by the first processor, operation result values of the second and third processors from a main memory, comparing, by a result value comparator of the first processor, the operation result values of the first, second and third processors, and outputting, by the result value comparator, operation result values in correspondence with the result of comparison.