INFORMATION REGENERATION DEVICE AND INFORMATION REGENERATION METHOD

Title:

INFORMATION REGENERATION DEVICE AND INFORMATION REGENERATION METHOD

Document Type and Number:

WIPO Patent Application WO/2012/140819

Kind Code:

A1

Abstract:

The problem of the present invention is to obtain a method of removing the effect of crosstalk from a regenerative signal by artificially generating a crosstalk component taking into account the frequencies of an adjacent track and a regenerative track and/or the phase shift therebetween. The problem of the present invention can be solved by an information regeneration device which includes a delay unit for outputting a regenerative signal for an Nth track in the regeneration of an (N + 1)th track (N is a natural number greater than or equal to two), a first waveform generating unit for generating a crosstalk component for the (N+1)th track on the basis of a first interference quantity that is a crosstalk quantity from the (N+1)th track to the Nth track and a first error quantity that is a deviation between the (N+1)th track and the Nth track, a second waveform generating unit for generating a crosstalk component for an (N-1)th track on the basis of a second interference quantity that is a crosstalk quantity from the (N-1)th track to the Nth track and a second error quantity that is a deviation between the (N-1)th track and the Nth track, and a waveform calculating unit for subtracting from the output of said delay unit the output of said first waveform generating unit and the output of said second waveform generating unit.

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Inventors:

ISHIHARA HAJIME (JP)
NAKAMURA YUSUKE (JP)

Application Number:

PCT/JP2012/001175

Publication Date:

October 18, 2012

Filing Date:

February 22, 2012

Export Citation:

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Assignee:

HITACHI CONSUMER ELECTRONICS (JP)
ISHIHARA HAJIME (JP)
NAKAMURA YUSUKE (JP)

International Classes:

G11B7/005; G11B20/10

Foreign References:

JP2002342938A	2002-11-29
JPH07334931A	1995-12-22
JP2003196840A	2003-07-11
JPH07249230A	1995-09-26
JP2005332453A	2005-12-02

Attorney, Agent or Firm:

INOUE, Manabu et al. (JP)
Manabu Inoue (JP)

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Claims:

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