Track sector detection system for rotating disk data storage app

Details Track sector detection system for rotating disk data storage app Track sector detection system for rotating disk data storage app

1994-12-02

1996-05-14

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7702, 360 48, 360 50, G11B 5596

Patent

active

055173713

ABSTRACT:
A system for detecting the servo sectors of a rotating magnetic disk solely from read pulses representative of information read on the disk. Each servo sector has a first or intersector gap, an automatic gain control data zone, a second gap, and a track data zone. Sector pulses indicative of the servo sectors are generated when all these gaps and zones are detected. Preferably, for the production of a write enable signal, the sector pulses thus produced are further compared with window pulses obtained by imparting a prescribed delay to the sector pulses. Writing on the disk is enabled when the sector pulses agree in time with the window pulses.

REFERENCES:
patent: 4636885 (1987-01-01), Yamada et al.
patent: 5027284 (1991-06-01), Kawahara
patent: 5036408 (1991-07-01), Leis et al.
patent: 5126895 (1992-06-01), Yasuda et al.
patent: 5307218 (1994-04-01), Kitamura et al.
patent: 5442299 (1995-08-01), Emori

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