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:
Apr. 26, 1994
Filed:
Mar. 09, 1992
Applicant:
Inventors:
Kanji Kawakami, Mito, JP;
Yoshiakira Karakama, Hadano, JP;
Masayuki Takagi, Odawara, JP;
Takayoshi Ohtsu, Kanagawa, JP;
Hisayasu Honma, Hiratsuka, JP;
Tetsuo Kobayashi, Kanagawa, JP;
Yutaka Sugita, Tokorozawa, JP;
Katsuya Mitsuoka, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 61 ; 360 46 ; 360 62 ;
Abstract
A magnetic recording apparatus for recording information on a magnetic recording medium. A circuit for generates a recording current pulse train and supplies the pulse train to a magnetic head. The last pulse of the recording current pulse train dampled waveform. A ripple current is superposed on the damped waveform.