The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2012
Filed:
Aug. 04, 2008
Sundararajan Sankaranarayanan, Wexford, PA (US);
Mehmet Fatih Erden, Pittsburgh, PA (US);
Raman Chatapuram Venkataramani, Pittsburgh, PA (US);
Sundararajan Sankaranarayanan, Wexford, PA (US);
Mehmet Fatih Erden, Pittsburgh, PA (US);
Raman Chatapuram Venkataramani, Pittsburgh, PA (US);
Seagate Technology LLC, Cupertino, CA (US);
Abstract
An equalizer employed in conjunction with bit-patterned media (BPM) is designed to take advantage of a common topology associated with BPM in which each data track is comprised of a plurality of sub-tracks. The equalizer-target filter pair is designed as multiple-input/multiple-output (MIMO) system, in which the readback signal is divided into readback signals associated with each sub-track. The MIMO equalizer takes into account differences in the channel response associated with each sub-track. A detector is configured to receive a plurality of equalized inputs provided by the MIMO equalizer, wherein the detector generates in response estimates of the user data stored on each of the plurality of sub-tracks.