Data recording method in which pilot signal period coincides wit

Details Data recording method in which pilot signal period coincides wit Data recording method in which pilot signal period coincides wit

1994-03-03

1995-10-03

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

358323, 375 20, 375 19, G11B 509, G11B 2014, G11B 2016, H04N 989

Patent

active

054557194

ABSTRACT:
A pilot signal is superposed and recorded on data at the beginning of each track. The beginning portion of the track is constituted only of codewords having a disparity of each 10 bits which is +2, 0 or -2. Also, the cumulative value of the disparities of every 10 bits may fluctuate in a period coinciding with the period of the pilot signal to be superposed. Therefore, the frequency spectrum in the beginning part of the track has a peak at the frequency of pilot signal, and using this peak as the pilot signal, tracking is controlled during reproduction.

REFERENCES:
patent: 4511933 (1985-04-01), Hofelt et al.
patent: 4520346 (1985-05-01), Shimada
patent: 5136436 (1992-08-01), Kahlman
patent: 5140474 (1992-08-01), Kahlman et al.
patent: 5142421 (1992-08-01), Kahlman et al.
patent: 5245483 (1993-09-01), Van Gestel
patent: 5258879 (1993-11-01), Shimotashiro et al.
patent: 5267099 (1993-11-01), Fujiwara et al.
patent: 5317457 (1994-05-01), Matsumi et al.
IEEE Transactions on Magnetics, vol. 24, #2, Mar. 1988, KAS Immink, "Signal to Noise Ratio of Pilot Tracking Tones Embedded in Binary Coded Signals", pp. 2004-2009.

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