Wide write head with thermal asperity detector and method of...

Details Wide write head with thermal asperity detector and method of... Wide write head with thermal asperity detector and method of...

2005-09-06

2005-09-06

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Checking record characteristics or modifying recording...

C360S031000

Reexamination Certificate

active

06940669

ABSTRACT:
A system for detecting thermal asperities and magnetic defects on a disc. The system includes a wide write head and a certification head. The wide write head includes a thermal asperity detector and a write element. A method for detecting thermal asperities and magnetic defects comprising writing a track with the wide write head, reading defects with the certification head, and scanning for thermal asperities with the thermal asperity detector. A burst pattern can be written to the disc upon locating a asperity of defect.

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