Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2005-05-03
2005-05-03
Tran, Sinh (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
06888694
ABSTRACT:
The present invention relates to controlling an actuator for positioning a read/write head in storage devices such as disk drives. More specifically, the invention relates to using a sensor to detect the disk vibration amplitude perpendicular to the disk surface, and using feed forward control to cancel or counteract the tendency of the read/write head to deviate off-track due to disk vibration. Various approaches are proposed to detect the disk vertical vibration.
REFERENCES:
patent: 3863124 (1975-01-01), Pierce et al.
patent: 4136364 (1979-01-01), Beery et al.
patent: 4258398 (1981-03-01), Bixby et al.
patent: 4424368 (1984-01-01), Swartz et al.
patent: 5031055 (1991-07-01), Yanagisawa
patent: 5162661 (1992-11-01), Sato et al.
patent: 5377058 (1994-12-01), Good et al.
patent: 5526208 (1996-06-01), Hatch et al.
patent: 5856895 (1999-01-01), Schaenzer et al.
patent: 5862015 (1999-01-01), Evans et al.
patent: 5936787 (1999-08-01), Ohmi
patent: 6064540 (2000-05-01), Huang et al.
patent: 6097559 (2000-08-01), Ottesen et al.
patent: 6097565 (2000-08-01), Sri-Jayantha et al.
patent: 6166874 (2000-12-01), Kim
patent: 6181520 (2001-01-01), Fukuda
patent: 6185171 (2001-02-01), Bassett et al.
patent: 6351341 (2002-02-01), Lee et al.
patent: 6381088 (2002-04-01), Despain et al.
patent: 6473259 (2002-10-01), Kuo et al.
patent: 6487028 (2002-11-01), Sri-Jayantha et al.
patent: 6501606 (2002-12-01), Boutaghou et al.
patent: 6501625 (2002-12-01), Boismier et al.
patent: 6568289 (2003-05-01), Nakajima
patent: 6570730 (2003-05-01), Lewis et al.
patent: 6590748 (2003-07-01), Murphy et al.
patent: 895 225 (1999-02-01), None
patent: 04271072 (1992-09-01), None
Alexei H. Sacks, Marc Bodson and William Messner, Advanced Methods for Repeatable Runout Compensation, Mar., 1995, IEEE Transactions on Magnetics, vol. 31, No. 2.
Jingliang Zhang, Ruifeng Chen, Guoxiao Guo, and Teck-Seng Low, Modified Adaptive Feedforward Runout Compensation for Dual-Stage Servo System, Sep., 2000, IEEE Transactions On Magnetics, vol. 36, No. 5.
Rich Ehrlich and Dick Curran, Major HDD TMR Sources and Projected Scaling with TPI, Mar., 1999, IEEE Transactions on Magnetics, vol. 35, No. 2.
Yuhong Huang, Michael Banther, Priyadarshee D, Mathur and William C. Messner, Design and Analysis of a High Bandwidth Disk Drive Servo System Using an Instrumented Suspension, Jun., 1999, IEEE/ASME Transactions on Mechatronics, vol. 4, No. 2.
Guo Guoxiao
He Zhimin
Ong Eng Hong
Zhang Jingliang
Agency for Science Technology and Research
Habermehl James L
Renner , Otto, Boisselle & Sklar, LLP
Tran Sinh
LandOfFree
Active control system and method for reducing disk... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active control system and method for reducing disk..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active control system and method for reducing disk... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3380213