Method for generating a reference signal from unique servo mark

Details Method for generating a reference signal from unique servo mark Method for generating a reference signal from unique servo mark

1992-01-24

1994-03-08

Hajec, Donald

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 49, 360 50, 360 48, G11B 509

Patent

active

052932761

ABSTRACT:
A plurality of data sequences having patterns distinguishable from informational data are recorded as a servo mark portion of servo information on a disk. Upon decoding a predetermined number of these data sequences, a determination is made as to whether an accurately located servo mark has been detected. The detected servo mark provides a reference from which the beginning of recorded servo burst data can be located, thereby enabling all of the servo burst data to be read. The presence of defects does not inhibit the detection of the servo mark.

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Patent Abstracts of Japan, vol. 10, No. 344, Nov. 20, 1986, JP-A-61 144 776, Ricoh Co. Ltd.

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