Magnetic disk apparatus having duplicate sync byte patterns

Details Magnetic disk apparatus having duplicate sync byte patterns Magnetic disk apparatus having duplicate sync byte patterns

1997-08-29

2000-11-14

Loomis, Paul

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data verification

360 46, 360 48, 360 51, G11B 509

Patent

active

061478261

ABSTRACT:
A writing unit writes a first sync byte pattern SB1 to the head of data and writes a second sync byte pattern SB2 to the end of the data (DATA+ECC). When the first sync byte pattern SB1 is not detected, the data is stored into a memory, and after that, a reading unit reads out the second sync byte pattern SB2 in the memory. When the second sync byte pattern SB2 is detected, the reading unit reads out the data of a predetermined length DL in which a position that is preceding to the detecting position by only a predetermined data length (DL) is set to the head position from the memory and demodulates.

REFERENCES:
patent: 5422760 (1995-06-01), Abbott et al.
patent: 5546243 (1996-08-01), Setoyama
patent: 5604646 (1997-02-01), Yamawaki
patent: 5696745 (1997-12-01), Yamawaki
patent: 5844920 (1998-12-01), Zook et al.
patent: 5959795 (1999-09-01), Wu

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