Data reproducer

Details Data reproducer Data reproducer

2005-11-16

2009-06-30

Tran, Thang V (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S124150, C369S047530, C369S044320

Reexamination Certificate

active

07554897

ABSTRACT:
It is an object of the present invention to provide a data reproducer in which the quality of a reproduction signal is improved. A data reproducer of the present invention includes a phase-difference detecting section which obtains the cross correlation value between the head pattern in a track to be reproduced and a reproduction signal, synchronous detectors which respectively obtain the cross correlation value between the head pattern of a track adjacent to the track to be reproduced and the reproduction signal, and crosstalk value detector which obtains the direction and ratio of crosstalk in accordance with these cross correlation values. The data reproducer has a correcting function which corrects the offset and gain of a reproduction signal in accordance with a phase difference and cross correlation value obtained by the phase-difference detecting section.

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Zi-Ning Wu et al., “A MMSE Interpolated Timing Recovery Scheme for The Magnetic Recording Channel”, 1997 IEEE International Conference on Communications, Montreal, Jun. 8, 1997, pp. 1625-1629.

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