06731442 is referenced by 28 patents and cites 1 patents.

A method is disclosed for detecting defects in a recordable medium such as a hard disc drive based on error energy. The method may include the steps of writing test data to the medium and reading back the test data. The method may also include the steps of computing an error energy based on the square of the difference between the read back data and an ideal version of the test data and comparing the error energy with an energy threshold. The method generates a defect signal when the error energy exceeds the energy threshold. The method may also be used to identify the media defect according to its error energy profile. An apparatus for detecting defects in a recordable medium is also disclosed.

Title
Method and apparatus for detecting media defects
Application Number
10/66231
Publication Number
6731442 (B2)
Application Date
January 31, 2002
Publication Date
May 4, 2004
Inventor
Mingyou Hu
Singapore
US
Quek Leong Choo
Singapore
US
David Loh
Singapore
US
Myint Ngwe
Singapore
US
Ming Jin
Singapore
US
Agent
Kirk A Cesari
US
Assignee
Seagate Technologies
CA, US
IPC
G11B 27/36
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