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. 12, 2007
Filed:
Oct. 13, 2004
Applicant:
Toshifumi Hatagami, Kawasaki, JP;
Inventor:
Toshifumi Hatagami, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 21/12 (2006.01); G11B 15/46 (2006.01); G11B 20/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus that controls a head that reads data from and writes data to a recording medium of which a spinning speed is controlled based on a clock signal includes a clock-error detecting unit that detects an error in the clock signal, and a head-retraction control unit that controls the head in such a way that the head is safely retracted when the error is detected by the clock-error detecting unit.