ECC Decoder Level Assignment for In-Order Data Transfer
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Solution Overview
Problem
Current storage devices face performance issues and power consumption challenges due to fixed clock rates and suboptimal error correction decoder levels, leading to inconsistent decoding times and latency in data transfer.
Innovation Solution
Implementing a system where the error correction decoder level is assigned based on syndrome weight rates, allowing for dynamic clock frequency adjustments to ensure simultaneous decoding completion across multiple decoding units, thereby adapting to system environment parameters and optimizing performance or power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is decoded using the first available decoding engine, then decoding can be performed quickly, but decoding completion times become inconsistent and latency increases
Solution Approach 1:
The patent assigns different decoding engines to different data blocks based on their specific characteristics (ECC decoder level requirements). Instead of using a uniform first-available approach, each data block receives a decoding engine matched to its needs, ensuring consistent completion times while maintaining high decoding speeds.
2Productivity
If clock rate is increased to improve performance, then system performance improves, but power consumption increases
Solution Approach 1:
The patent dynamically adjusts the clock frequency of decoding engines based on real-time system conditions and workload characteristics. The controller monitors system environment parameters and adapts clock rates accordingly, allowing the system to achieve high performance when needed while reducing power consumption during normal operations.
Solution Approach 2:
The system changes operational parameters (clock frequency) of decoding engines based on detected system conditions. By adjusting the clock rate parameter dynamically rather than maintaining a fixed high rate, the system optimizes the balance between performance and power consumption.
3Device complexity
If fixed clock rates are used in decoding engines, then system design is simplified, but latency and performance issues occur due to inability to adapt to different system environments
Solution Approach 1:
The patent introduces dynamic clock frequency adjustment capability to decoding engines while maintaining a relatively simple overall system architecture. The controller manages the complexity of adaptive frequency selection, allowing individual decoding engines to operate at optimized frequencies based on system conditions without requiring complex redesign of the entire system.
Data Source
AI summary
The present disclosure generally relates partial speed changes to improve in-order data transfer. Rather than determining an ECC decoder on a first available decoder basis, the ECC decoder may be based on the ECC decoder level. A memory device will have at least one FMU that has a syndrome weight (SW). The disclosure proposes assigning FMU's based on the SW rate. At the time the command is read, the data storage device determines which level of decoder will be assigned to the FMU. The determination will then be checked according to different system environment parameters to maintain performance or reduce power consumption. The arrangement allows a more flexible system design that can adapt according to the current system status.