Thermal asperity compensation in perpendicular recording system

Dynamic magnetic information storage or retrieval – Checking record characteristics or modifying recording...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C360S046000, C360S053000, C360S045000, C360S065000, C360S031000

Reexamination Certificate

active

06995932

ABSTRACT:
A detection circuit or a perpendicular recording system includes a channel circuit to amplify the read data signal. A transient detector generates a transient detect signal. A first path and a second path are coupled to an output of the channel circuit. The first path includes a first data detector that generates a first detected data signal in response to detecting data in the read data signal. A second path includes a series connected combination of a data filter and a second data detector. The filter generates a filtered data signal in which low frequency components of the read data signal are attenuated. The second data detector generates a second detected data signal in response to detecting data in the filtered data signal. Either the first detected data signal or the second detected data signal is coupled to a data processor based on whether a transient is detected.

REFERENCES:
patent: 5233482 (1993-08-01), Galbraith et al.
patent: 5745978 (1998-05-01), Aboaf et al.
patent: 5831456 (1998-11-01), Sutardja
patent: 5920449 (1999-07-01), Tagawa
patent: 5933299 (1999-08-01), Tanaka et al.
patent: 5995313 (1999-11-01), Dakroub
patent: 6005726 (1999-12-01), Tsunoda
patent: 6040953 (2000-03-01), Malone et al.
patent: 6101054 (2000-08-01), Tsunoda
patent: 6104557 (2000-08-01), Kasai et al.
patent: 6119261 (2000-09-01), Dang et al.
patent: 6130791 (2000-10-01), Muto
patent: 6130793 (2000-10-01), Ohmori et al.
patent: 6137643 (2000-10-01), Flynn
patent: 6147827 (2000-11-01), Southerland et al.
patent: 6212047 (2001-04-01), Payne et al.
patent: 6414806 (2002-07-01), Gowda et al.
patent: 6501610 (2002-12-01), Sugawara et al.
patent: 2002/0060869 (2002-05-01), Sawaguchi et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Thermal asperity compensation in perpendicular recording system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermal asperity compensation in perpendicular recording system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal asperity compensation in perpendicular recording system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3650717

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.