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:
Dec. 01, 2009
Filed:
Sep. 23, 2005
Arvind R. Aemireddy, Irving, TX (US);
Ronen Malka, St. Louis Park, MN (US);
Jeffrey A. Gleason, Burnsville, MN (US);
Scott M. O'brien, Bloomington, MN (US);
Arvind R. Aemireddy, Irving, TX (US);
Ronen Malka, St. Louis Park, MN (US);
Jeffrey A. Gleason, Burnsville, MN (US);
Scott M. O'Brien, Bloomington, MN (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A method and apparatus for detecting signal peaks caused by a thermal asperity event in a magnetic recording media to reduce data reading errors introduced by the thermal asperity event. A common mode voltage is determined for differential signals representing data bits read from the magnetic recording media and a threshold voltage produced responsive to the common mode voltage. A comparator determines if either of the differential signals exceeds the threshold voltage, thereby indicating the occurrence of a thermal asperity event.