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:
Jun. 16, 1998
Filed:
Jan. 31, 1994
Yoshibumi Matsuda, Hachiouji, JP;
Masaaki Futamoto, Tukui-gun, JP;
Fumio Kugiya, Hachiouji, JP;
Yoshinori Miyamura, Nishitama-gun, JP;
Takeshi Nakano, Sagamihara, JP;
Hisashi Takano, Hachiouji, JP;
Kyo Akagi, Fuchu, JP;
Mikio Suzuki, Kokubunji, JP;
Yasuhide Ouchi, Kodaira, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
It is disclosed that a longitudinal magnetic recording medium and apparatus has recording sections having longitudinal magnetic films magnetically isolated in a recording direction. The magnetically isolated recording sections can record a single bit each so that the longitudinal magnetic recording medium can remove the irregular domain boundary of its own caused on boundaries of magnetization reversals in the recording direction. This can improve the signal-to-media noise ratio to a great extent in writing and reading.