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:
Oct. 14, 1997
Filed:
Aug. 04, 1995
Applicant:
Inventors:
Satoru Seko, Kanagawa, JP;
Toru Takeda, Saitama, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360135 ;
Abstract
A magnetic disk is provided with a track divided by servo areas to record servo signals and data areas to record data signals. Within the servo area, an exclusive region is previously formed to specifically record the servo signal. In one embodiment, the servo region is formed along the moving locus of a magnetic head while writing and reading data, which extends both along the radial direction and peripheral direction of the magnetic disk.