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:
Jan. 23, 2001
Filed:
Jun. 26, 1998
Applicant:
Inventors:
Takashi Kuroda, Yamato, JP;
Yuji Kigami, Yamato, JP;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/09 ;
U.S. Cl.
CPC ...
G11B 5/09 ;
Abstract
To realize simplification of the structure and high reliability in the disk drive. When a position of a target sector on a disk,is detected while skipping data sectors including a first region which is written using a first read/write clock (RDWTCLK) and a second region which is written using a second read/write clock, a controller,in a HDC,presets to a counter,an offset value which is based on the length of a sector to be skipped and a difference in the frequency between the first and the second RDWTCLKs and counts the first RDWTCLK fed from a CLK generator,of a channel IC,to detect the position of the target sector.