Variable threshold bipolar signal peak detector

Details Variable threshold bipolar signal peak detector Variable threshold bipolar signal peak detector

2005-09-23

2009-12-01

Feild, Joseph H (Department: 2627)

Dynamic magnetic information storage or retrieval

Checking record characteristics or modifying recording...

C360S031000, C360S067000

Reexamination Certificate

active

07626777

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.

REFERENCES:
patent: 5527110 (1996-06-01), Abraham et al.
patent: 5862007 (1999-01-01), Pham et al.
patent: 5901001 (1999-05-01), Meyer et al.
patent: 6049763 (2000-04-01), Christiansen et al.
patent: 6071007 (2000-06-01), Schaenzer et al.
patent: 6104557 (2000-08-01), Kasai et al.
patent: 6175457 (2001-01-01), Flynn
patent: 6265869 (2001-07-01), Takahashi
patent: 6304396 (2001-10-01), Ramalho et al.
patent: 6304401 (2001-10-01), Okamoto
patent: 6414806 (2002-07-01), Gowda et al.
patent: 6483657 (2002-11-01), Fioravanti et al.
patent: 6494085 (2002-12-01), Wakefield et al.
patent: 6603416 (2003-08-01), Masenas et al.
patent: 6724550 (2004-04-01), Lim et al.
patent: 6754015 (2004-06-01), Erden et al.
patent: 6940669 (2005-09-01), Schaenzer
Lee, Aaron, et al; “CMOS Circuits for Thermal Asperity Detection and Recovery in Disk-Drive Read Channels”; date unknown.
Groen, Eric, et al; “Hard Drive Data Recovery System”, Design Review, Senior Design Project; Iowa State University; Dec. 8, 1998.

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