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:
Jul. 18, 2006
Filed:
May. 03, 2004
Nobuyuki Ishii, Odawara, JP;
Kazuhisa Murakami, Ninomiya, JP;
Sadahiro Nishida, Odawara, JP;
Takashi Takenaka, Fujisawa, JP;
Nobuyuki Ishii, Odawara, JP;
Kazuhisa Murakami, Ninomiya, JP;
Sadahiro Nishida, Odawara, JP;
Takashi Takenaka, Fujisawa, JP;
Hitachi Global Storage Technologies Japan, Ltd., Odawara, JP;
Abstract
A magnetic disk drive has an external environment monitoring function. Data is stored on available disk media while the magnetic disk drive is in an unfavorable environment. Under favorable conditions, the data is then moved to a write-restricted area of the media, which was unavailable while the magnetic disk drive was in the unfavorable environment. The magnetic disk drive uses a temperature sensor/atmospheric pressure sensor as a monitoring device and exercises a function, for example, for reading a reference signal stored in a predetermined area of the medium at predefined intervals. When the external environment is favorable for the magnetic disk drive, the present invention can increase the information storage capacity determined appropriate under the current operating conditions.