System and method for writing servo information and data to a pl

Details System and method for writing servo information and data to a pl System and method for writing servo information and data to a pl

1993-08-23

1994-12-13

Hajec, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 7705, G11B 1512, G11B 5596

Patent

active

053734025

ABSTRACT:
A system for writing servo information to a plurality of magnetic discs in a servo write mode, and for writing data to the plurality of magnetic discs in a data write mode in disclosed. The system includes a servo binary input buffer for receiving a mode signal and for directing the write signal based upon the mode signal. A first plurality of switches, coupled to the servo binary input buffer and to a disc select buffer, directs the write signal to a selected portion of a plurality of write heads. A second plurality of switches, coupled to the first plurality of switches, to the plurality of write heads, and to a head select buffer, supplies the write signal to one write head in the selected portion of the plurality of write heads during the data write mode, and supplies the write signal to one half of the write heads in the selected portion of the plurality of write heads during the servo write mode.

REFERENCES:
patent: 4912576 (1990-03-01), Janz
patent: 4967292 (1990-10-01), Moteki
patent: 4969056 (1990-11-01), Negishi et al.
patent: 5053897 (1991-10-01), Ikeshita
patent: 5132852 (1992-07-01), Price
patent: 5241435 (1993-08-01), Saito et al.

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