Dynamic Error Recovery for SRAM Buffer Data Transfer
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Solution Overview
Problem
Existing systems face challenges in ensuring reliable data transfer between memory devices, particularly when using intermediate buffers like SRAM, which are prone to errors due to quantum phenomena, radiation, and other issues, leading to potential catastrophic failures in critical systems.
Innovation Solution
A system and method for dynamic error recovery during data transfer, using a transfer controller to segment data into smaller packets, monitor for uncorrectable errors, and re-transfer corrupted segments directly to the secondary memory, bypassing the unreliable intermediate buffer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transferred through an intermediate buffer (SRAM) to improve transfer speed between memory devices, then productivity is improved, but reliability deteriorates due to error-prone intermediate storage
Solution Approach 1:
The data transfer process is segmented into multiple smaller transactions, with error detection performed at each segment level rather than waiting for complete transfer. This allows early detection and recovery from errors without compromising the overall transfer speed achieved through intermediate buffering.
Solution Approach 2:
An error detection and recovery mechanism is introduced as an intermediary layer between the intermediate buffer and the destination memory. This mediator monitors data integrity, detects errors using parity or ECC codes, and manages retransmission without requiring system-level intervention, thus maintaining both speed and reliability.
2Reliability
If the entire data frame is re-transferred upon detecting an error to ensure reliability, then reliability is improved, but loss of time increases due to complete re-transfer
Solution Approach 1:
Error detection is performed on segmented portions of data during transfer rather than on the complete frame. When an error is detected in a segment, only that specific segment needs to be re-transferred rather than the entire data frame, significantly reducing the time penalty while maintaining reliability.
Solution Approach 2:
Instead of performing complete re-transfer action upon error detection, the system applies partial action by re-transferring only the corrupted segment. This reduces the excessive time loss associated with full re-transfer while still ensuring data reliability through targeted error correction.
3Productivity
If intermediate buffers are used to match data transfer rates between memory devices, then productivity is improved, but object-generated harmful factors increase due to errors from quantum phenomena and radiation
Solution Approach 1:
An error detection and correction system acts as an intermediary between the intermediate buffer and memory devices. This mediator detects errors generated by quantum phenomena and radiation through parity or ECC codes and manages retransmission, allowing the buffer to maintain its rate-matching function while mitigating the harmful effects of transmission errors.
Solution Approach 2:
The system creates redundant copies of data in the intermediate buffer with associated error detection codes (parity or ECC). These copies enable verification of data integrity without requiring additional physical buffers, allowing rate-matching functionality while protecting against errors through informational redundancy.
Data Source
AI summary
A system and method are provided for ensuring reliable data transfers by automatically recovering from un-correctable errors detected in data traversing throughout a system and being retrieved from an unreliable intermediate data buffer between a first memory and a secondary slower memory. Additionally, measures to compensate for the use of unreliable or error-prone components and interconnects, such as, for example, SRAM memory as a temporary buffer are provided. Further, measures to detect and correct errors—whatever the type—injected or occurring at any stage throughout traversal of the system are provided.