Reader design for bit patterned media recording at 10 Tb/in2 density

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Abstract

A reader design for reading back at very high density is proposed for bit patterned media recording (BPMR). The idea is a rotated sense head, so that the shields are aligned down-track, combined with oversampled signal processing to regain the lost down-track resolution. Simulation results show that the proposed reader has more than 20 dB gain compared with a normally oriented head array for reading back at 10 Tbit/in2. The tradeoff between oversampling and increased target length is examined. Island jitters are found to be non-Gaussian distributed. The performance of the new design is investigated for various bit patterns, island jitter and head noise.

Original languageEnglish (US)
Article number6509445
Pages (from-to)5208-5214
Number of pages7
JournalIEEE Transactions on Magnetics
Volume49
Issue number10
DOIs
StatePublished - Oct 2 2013

Keywords

  • Bit-patterned media recording (BPMR)
  • ECC media
  • island jitter
  • magnetoresistive head

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