Electronic system with data refresh mechanism and method of operation thereof
First Claim
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1. An apparatus comprising:
- a media;
a head configured to write data on the media;
a read channel, coupled to the head, configured to detect servo data from the media; and
control circuitry, coupled to the read channel, configured to;
generate a position error signal (PES), associated with a write operation of an aggressor track, from the servo data,compare a first threshold to the PES for detecting a write unsafe condition,compare a second threshold, within the first threshold, to the PES for detecting a write squeeze condition, andcontrol a refresh operation of a victim track based on at least one of the comparisons.
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Abstract
An apparatus includes: a media; a head configured to write data on the media; a read channel, coupled to the head, configured to detect servo data from the media; and control circuitry, coupled to the read channel, configured to: generate a position error signal (PES), associated with a write operation of an aggressor track, from the servo data, compare a first threshold to the PES for detecting a write unsafe condition, compare a second threshold, within the first threshold, to the PES for detecting a write squeeze condition, and control a refresh operation of a victim track based on at least one of the comparisons.
451 Citations
24 Claims
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1. An apparatus comprising:
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a media; a head configured to write data on the media; a read channel, coupled to the head, configured to detect servo data from the media; and control circuitry, coupled to the read channel, configured to; generate a position error signal (PES), associated with a write operation of an aggressor track, from the servo data, compare a first threshold to the PES for detecting a write unsafe condition, compare a second threshold, within the first threshold, to the PES for detecting a write squeeze condition, and control a refresh operation of a victim track based on at least one of the comparisons. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of operating an apparatus, the method comprising:
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generating a position error signal (PES), associated with a write operation of an aggressor track, from servo data; comparing a first threshold to the PES for detecting a write unsafe condition; comparing a second threshold, within the first threshold, to the PES for detecting a write squeeze condition; and controlling a refresh operation, of a victim track, based on at least one of the comparisons. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification