Preamble pattern and magnetic recording system using the...

Details Preamble pattern and magnetic recording system using the... Preamble pattern and magnetic recording system using the...

2006-11-28

2006-11-28

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

C360S051000, C360S053000

Reexamination Certificate

active

07142379

ABSTRACT:
A magnetic recording system having a magnetic-recording medium with data sectors wherein a preamble pattern of a prescribed cycle is recorded, the preamble pattern having the cycle of a predetermined T, wherein T represents a minimum duration of a data-recorded bits in the data sectors. The system includes a magnetic head to reproduce the preamble pattern and a signal-processing circuit to process data to be recorded in and reproduced from the data sectors. The signal-processing circuit including (i) a sampler for sampling a signal reproduced from the preamble pattern and (ii) a corrector for correcting the amplitude by using maximum and minimum amplitude values in each cycle of the preamble pattern sampled by the sampler.

REFERENCES:
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patent: 5552942 (1996-09-01), Ziperovich et al.
patent: 6724707 (2004-04-01), Van Woudenberg et al.
patent: 8-315517 (1996-11-01), None
patent: 2000-021096 (2000-01-01), None

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