Signal Processing Circuit Defect Recovery via Adaptive Parameter Storage
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Solution Overview
Problem
Storage media defects such as scratches and fingerprints can cause data corruption by disrupting signal processing control loops, leading to prolonged recovery times and instability in reading and writing data.
Innovation Solution
A signal processing circuit with adaptive processing parameters, a logic control circuit, and a storage circuit that samples and stores these parameters at high frequencies, allowing for rapid recovery when defects are detected, thereby minimizing data corruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If defect recovery capability is implemented in medium apparatus, then data corruption is minimized, but recovery time is prolonged
Solution Approach 1:
The patent applies preliminary action by storing processing parameters at high frequency during normal operation, so that when a defect is detected, the recovery process can immediately use the most recent stored values without waiting for the control loop to naturally recover. This pre-preparation of recovery data significantly reduces the recovery time while maintaining data integrity.
Solution Approach 2:
The patent implements feedback by continuously monitoring the electrical signal for defect conditions and using this information to trigger the recovery mechanism. The system feeds back the defect detection status to the control circuit, which then retrieves the appropriate stored processing parameters to restore normal operation, creating a closed-loop recovery system.
2Measurement precision
If processing parameters are adaptively adjusted, then signal processing accuracy is improved, but system complexity increases
Solution Approach 1:
The patent applies copying by creating a stored copy of the processing parameters during normal operation. Instead of making the control loop infinitely complex to handle all possible defect conditions, the system copies the known good parameter values and uses these copies during recovery, simplifying the overall system architecture while maintaining high processing accuracy.
Solution Approach 2:
The patent implements parameter changes by switching between different processing parameters based on operational conditions. During normal operation, adaptive parameters are used for optimal processing; upon defect detection, pre-stored parameter values are retrieved and applied. This dynamic parameter switching achieves high accuracy without requiring overly complex adaptive mechanisms.
3Speed
If processing parameters are sampled at high frequency, then recovery speed is increased, but storage requirements increase
Solution Approach 1:
The patent applies preliminary action by performing high-frequency sampling during normal operation when the system is stable, so that the storage buffer is pre-filled with recent parameter values. This eliminates the need for continuous high-frequency storage during recovery, reducing overall storage requirements while maintaining fast recovery capability.
Solution Approach 2:
The patent implements partial action by sampling at high frequency only when necessary (during normal operation and immediately upon defect detection), rather than maintaining continuous high-frequency sampling throughout all operation. This selective high-frequency sampling achieves fast recovery when needed while minimizing storage consumption during normal operation.
Data Source
AI summary
A signal processing circuit includes a plurality of processing-circuit modules and a logic control circuit. The plurality of processing-circuit modules is configured to process an electrical signal. The plurality of processing-circuit modules has at least one processing parameter that is adaptively adjusted based on the electrical signal. The logic control circuit is configured to receive signals from the plurality of processing-circuit modules, validate the processing based on the received signals, and control a storage circuit to sample and store a value of the processing parameter when the processing is validated. Further, the logic control circuit is configured to control the storage circuit to maintain the value of processing parameter when the processing fails validation, and to control the storage circuit to recover the processing parameter in the plurality of processing-circuit modules to the stored value when the plurality of processing-circuit modules is disturbed by a defect.