The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2014
Filed:
Feb. 12, 2013
Kabushiki Kaisha Toshiba, Tokyo, JP;
Tomokazu Okubo, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a data reproduction apparatus includes a decoder, a cancellation process module and a calculator. The cancellation process module cancels, from equalized-waveform data of a read signal, the interference between a signal read from a first track and a signal read form a second track adjacent to the first track. The calculator calculates, for a specific window, a first cancellation coefficient necessary to cancel the interference. The calculator further calculates a second cancellation coefficient by correcting the first cancellation coefficient based on a ratio of the number of adjacent bits of opposite polarity to the number of all bits in the specific window.