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Correlation of sectored servo position information

  • US 5,117,408 A
  • Filed: 09/29/1989
  • Issued: 05/26/1992
  • Est. Priority Date: 09/29/1989
  • Status: Expired due to Term
First Claim
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1. A method of determining transducer position relative to a disk in a data storage system, comprising:

  • reading track identification information from a disk in the data storage system to provide a coarse position signal identifying a track that the transducer is positioned over;

    reading position error samples from a disk in the data storage system to provide a fine position signal representing transducer position error within a track that the transducer is positioned over; and

    correlating the coarse position signal and the fine position signal so the coarse position signal and the fine position signal correspond to the same track on the disk, the step of correlating comprising;

    determining whether the transducer has moved between tracks after reading the track identification information and before reading the position error samples; and

    adjusting the coarse position signal to reflect proper track identification information when the transducer has moved.

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