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:
May. 16, 2006
Filed:
Nov. 13, 2001
Applicants:
Seiichi Mita, Kanagawa-ken, JP;
Hideki Sawaguchi, Kodaira, JP;
Naoya Kobayashi, Odawara, JP;
Masaharu Kondo, Odawara, JP;
Inventors:
Seiichi Mita, Kanagawa-ken, JP;
Hideki Sawaguchi, Kodaira, JP;
Naoya Kobayashi, Odawara, JP;
Masaharu Kondo, Odawara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D 1/00 (2006.01); H04B 1/10 (2006.01); G11B 1/035 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a data demodulating method, predetermined input data is demodulated based upon a response characteristic of the partial response class 4; the demodulated input data is discrete-filtered to thereby produce filtering data; and the filtering data is maximum likelihood-decoded to thereby produce asymmetrical response data. Further, a magnetic recording/reproducing apparatus is arranged by using this data demodulating method.