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:
May. 19, 2009
Filed:
Jun. 04, 2007
Peng Luo, Fremont, CA (US);
Keung Youn Cho, San Jose, CA (US);
Hao Ping Wen, Sunnyvale, CA (US);
Shuyu Sun, Saratoga, CA (US);
Peng Luo, Fremont, CA (US);
Keung Youn Cho, San Jose, CA (US);
Hao Ping Wen, Sunnyvale, CA (US);
Shuyu Sun, Saratoga, CA (US);
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A hard disk drive with a disk that has a servo field with an A servo burst and a B servo burst. The A servo burst has a trimmed erase band. The trimmed erase band can be created by offsetting the write head relative to a burst centerline to reduce the width of the erase band. For example, the write head can be moved toward a centerline of the A servo burst. The offset can be a function of write current and cylinder location of the disk. The offsets are selected so that the resultant burst profiles do not contain a flat minimum portion.