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:
Feb. 03, 2015
Filed:
Mar. 27, 2014
Western Digital Technologies, Inc., Irvine, CA (US);
Alvin J. Wang, Fremont, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A data storage device is disclosed comprising a head actuated over a disk. A read signal from the head is sampled to generate signal samples, and the signal samples are filtered with an equalizer filter to generate equalized samples. The equalized samples are filtered with an inter-track interference (ITI) filter to generate ITI attenuated samples, and a data sequence is detected based on the ITI attenuated samples. In one embodiment, the ITI filter comprises a transfer function:1−HPF()and in another embodiment the ITI filter comprises a transfer function:1−LPF()where erepresents a noise sequence in the equalized samples, HPF represents a high pass filter operating on e, and LPF represents a low pass filter operating on e.