Magnetic disc apparatus employing constant-density recording and

Details Magnetic disc apparatus employing constant-density recording and Magnetic disc apparatus employing constant-density recording and

1995-05-31

1997-05-20

Kim, W. C.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 48, 360 49, G11B 509

Patent

active

056317832

ABSTRACT:
A magnetic disc apparatus employing a constant-density recording type and a magnetic disc driver for accessing data thereon. The magnetic disc apparatus comprises a plurality of tracks extended in a circumferential direction on the magnetic disc apparatus surface; a plurality of servo and data information areas which are provided in the circumferential direction of each track; a WID (wedge identification) field for recording the ID for data sectors positioned in one data information area, the ID being recorded in only one interval for each data information area; and a PID (pseudo identification) field positioned in front of each data sector and having an interval corresponding to transfer time of the PID (i.e. the ID of a corresponding data sector) generated from a WID field during access of the magnetic disc apparatus.

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