Apparatus and method for sensing an external magnetic field...

Details Apparatus and method for sensing an external magnetic field... Apparatus and method for sensing an external magnetic field...

2007-10-17

2010-11-02

Tzeng, Fred (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

Reexamination Certificate

active

07826162

ABSTRACT:
A hard disk drive is disclosed including a voice coil motor and a magnetic sensor communicating with a control circuit. A magnetic sensor reading is created and used to stop access operations in response to the reading of an external magnetic field that may be strong enough to disrupt a slider accessing a rotating disk surface. Also disclosed are a main flex circuit and head stack assembly including the magnetic sensor for use in a hard disk drive. Control circuits and processors are disclosed for receiving the magnetic reading to stop access operations in hard disk drives. The hard disk drive may be a Perpendicular Magnetic Recording (PMR) hard disk drive.

REFERENCES:
patent: 5777815 (1998-07-01), Kasiraj et al.
patent: 6738216 (2004-05-01), Kawana et al.
patent: 6753667 (2004-06-01), Sakamoto
patent: 6972920 (2005-12-01), Kim et al.
patent: 6995950 (2006-02-01), Lairson
patent: 7002766 (2006-02-01), Kisaka et al.
patent: 7411757 (2008-08-01), Chu et al.
patent: 7499250 (2009-03-01), Zhang
patent: 2003/0103287 (2003-06-01), Agematsu
patent: 2006/0092556 (2006-05-01), Hamaguchi
patent: 2006/0132951 (2006-06-01), Zaitsu
patent: 2006/0245108 (2006-11-01), Hsu
patent: 2007/0081276 (2007-04-01), Fukuzawa
patent: 2007/0153412 (2007-07-01), Takeda et al.

Affiliated with

Also associated with

Rating

Apparatus and method for sensing an external magnetic field... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for sensing an external magnetic field..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for sensing an external magnetic field... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4240278