Data Storage Controller Soft Error Recovery via Cache Rearrangement

The patent segments the error handling process into distinct phases: error detection, error correction attempt, and fallback system halt. The memory system is divided into functional blocks including error detection logic, error correction code (ECC) units, and status register interfaces. This segmentation allows each component to specialize in specific error handling tasks, improving overall reliability without proportionally increasing system complexity.

The patent implements preliminary error detection and correction actions before system failure occurs. Error detection logic continuously monitors memory operations, and ECC mechanisms are pre-configured to correct common bit-flip errors. Status registers are pre-prepared to track error states, enabling proactive error management that prevents catastrophic failures while maintaining system simplicity.

Instead of halting the entire system upon error detection, the patent applies partial action by only stopping the specific memory operation that encountered the error. The system continues to accept and process other operations normally, while isolating and handling the erroneous operation separately. This approach maintains productivity by allowing unaffected operations to proceed while still ensuring reliability through targeted error handling.

The patent segments the system operation into independent operation threads that can be individually halted and resumed. When an error is detected in one operation, only that specific operation thread is paused while others continue executing. This segmentation enables selective error handling that prevents system-wide stoppages, thereby maintaining productivity while preserving reliability.

The patent implements preliminary error detection and correction mechanisms that are activated before errors can propagate. Error detection logic is integrated into the memory interface to identify bit-flip errors early in the operation sequence. ECC codes are pre-calculated and stored alongside data, enabling rapid correction of soft errors without requiring system halt or data retransmission, thus maintaining both high storage capacity and reliability.

The patent converts the harmful effect of increased soft error rates (resulting from higher element density) into a beneficial feature by implementing sophisticated error detection and correction mechanisms. The higher density operations generate more error events, which in turn activate and refine the error handling subsystems. These subsystems, when functioning properly, actually improve overall system reliability by catching and correcting errors that would otherwise go undetected in high-density operations.