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Magnetic hard disk drive

  • US 7,184,236 B2
  • Filed: 09/21/2004
  • Issued: 02/27/2007
  • Est. Priority Date: 11/20/2000
  • Status: Expired due to Fees
First Claim
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1. A magnetic hard disk drive comprising:

  • a magnetic hard disk comprising servo areas and data areas divided into a plurality of sector blocks,a magnetic head comprising a reproducing element and a recording element, anda data processing circuit for processing magnetic information input or output from the magnetic head,wherein the data area have at least one micro-servo area comprising IDAM field and a parity code field, formed between at least two of said plurality of sector blocks,the data processing circuit has an IDAM detector, a memory for a parity code, and comparator that compares a parity code, and comparator that compares a parity code of a target recording track with the parity code in the memory, anda HDC that output the parity code of a target recording track to the comparator.

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