Predictive diagnosis of a data read system
First Claim
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1. A method of diagnosing a data read system comprising a read channel for processing a signal, the method comprising the steps of:
- measuring at least one metric of the read channel during processing of a signal containing unknown data;
comparing the at least one metric against at least one stored nominal metric;
diagnosing whether there is a potential problem with the data read system based on the comparison;
diagnosing whether there is a potential problem with a data medium based on the comparison; and
generating a warning in response to a result of the comparison.
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Abstract
A data read system comprising a read channel for processing a signal, and a diagnostic controller in communication with the read channel. The diagnostic controller is configured to measure at least one metric of the read channel during processing of a signal containing unknown data. The measured metric is then compared against a stored nominal metric and a warning is generated in response to a result of the comparison. In particular, the warning is generated only if the difference between the measured metric and the stored nominal metric exceeds a threshold.
17 Citations
21 Claims
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1. A method of diagnosing a data read system comprising a read channel for processing a signal, the method comprising the steps of:
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measuring at least one metric of the read channel during processing of a signal containing unknown data; comparing the at least one metric against at least one stored nominal metric; diagnosing whether there is a potential problem with the data read system based on the comparison; diagnosing whether there is a potential problem with a data medium based on the comparison; and generating a warning in response to a result of the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A data read system comprising a read channel for processing a signal, and a diagnostic controller in communication with the read channel, wherein the diagnostic controller is configured to:
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measure at least one metric of the read channel during processing of a signal containing unknown data; compare the measured at least one metric against at least one stored nominal metric; diagnose whether there is a potential problem with the data read system based on the comparison; diagnose whether there is a potential problem with a data medium based on the comparison; and generate a warning in response to a result of the comparison. - View Dependent Claims (18, 19, 20)
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21. Means for diagnosing a data read system comprising a read channel for processing a signal, the means comprising:
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means for measuring at least one metric of the read channel during processing of a signal containing unknown data; means for comparing the at least one metric against at least one stored nominal metric; means for diagnosing whether there is a potential problem with the data read system based on the comparison; means for diagnosing whether there is a potential problem with a data medium based on the comparison; and means for generating a warning in response to a result of the comparison.
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Specification