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:
Aug. 06, 1991
Filed:
Aug. 04, 1989
Masahiro Kusunoki, Tachikawa, JP;
Koji Osafune, Hamura, JP;
Hiroshi Okamura, Hamura, JP;
Yoshihisa Nakamori, Oome, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A magnetic recording/reproducing apparatus includes a control section, a recording section and a medium access section having a head. The control section sets a write mode in response to an input write access command, and outputs write data and density indication data to the recording section. In the write mode, the recording section generates dummy data in accordance with the density indication data and modulates a write current in accordance with the write data and the dummy data subsequent to the write data. The modulated write current is supplied to the medium access section. A value of the write current is determined in accordance with the density indication data, and the write current decays with a time constant while the write current is modulated in accordance with the dummy data. The medium access section write-accesses a medium in accordance with the modulated write current in the write mode.