Inspection apparatus and inspection method of magnetic disk...

Details Inspection apparatus and inspection method of magnetic disk... Inspection apparatus and inspection method of magnetic disk...

2011-08-16

2011-08-16

Negrón, Daniell L (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

C360S075000

Reexamination Certificate

active

08000047

ABSTRACT:
The present invention provides a technique for converting burst data to digital data, applying FFT operation to 2n(n is an integer) pieces of digital data in response to any start signal synchronized with a sector signal, applying a window function centered around data corresponding to a frequency of a burst data signal component before the FFT operation, and performing head positioning based on a result as the detected value of the burst data.

REFERENCES:
patent: 6700369 (2004-03-01), Makuuchi et al.
patent: 6754025 (2004-06-01), Shepherd et al.
patent: 07-141807 (1995-06-01), None
patent: 2007-242152 (2007-09-01), None

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