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Class Information
Number: 360/77.06
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track centering > Rotary carrier > Reproduced data signal used for tracking
Description: Subject matter for processing a reproduced information signal to control the transducer position.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7397627 |
Method of detecting position of head for recording medium |
Jul. 8, 2008 |
| 7397628 |
Two degree of freedom position control method, two degree of freedom position control device, and medium storage device |
Jul. 8, 2008 |
| RE40413 |
Method and apparatus for developing a dynamic servo signal from data |
Jul. 1, 2008 |
| 7312946 |
Method and apparatus for servo control in a disk drive |
Dec. 25, 2007 |
| 7283320 |
Magnetic recording medium including servo and data bands in the magnetic layer |
Oct. 16, 2007 |
| 7268968 |
Vibration suppression for servo control |
Sep. 11, 2007 |
| 7265933 |
Disk drive computing repeatable run out while actuator arm is pressed against crash stop |
Sep. 4, 2007 |
| 7248429 |
Adaptive settling control method and apparatus in track seek mode of disc drive |
Jul. 24, 2007 |
| 7227708 |
System and method for determining long-range erasure of adjacent tracks in hard disk drive |
Jun. 5, 2007 |
| 7209311 |
Data storage device and control method therefor to prevent off-track writing |
Apr. 24, 2007 |
| 7203023 |
Magnetic recording unit and magnetic recording medium |
Apr. 10, 2007 |
| 7158338 |
Servo track having periodic frames of tone field and embedded synchronization marks |
Jan. 2, 2007 |
| 7106022 |
Velocity controlled disk drive head retraction with offset removal |
Sep. 12, 2006 |
| 7106549 |
Magnetic recording and reproducing apparatus and magnetic recording medium |
Sep. 12, 2006 |
| 7088535 |
Off-track retry method in hard disk drive |
Aug. 8, 2006 |
| 7085094 |
Interleaved repeatable runout correction for data storage device |
Aug. 1, 2006 |
| 7072137 |
Data read device, read method and circuit controlling read device |
Jul. 4, 2006 |
| 7009805 |
Detection of track misregistration within user data channel |
Mar. 7, 2006 |
| 7005849 |
System and method for high-speed massive magnetic imaging on a spin-stand |
Feb. 28, 2006 |
| 6989949 |
Performance test method of head gimgal assembly with precise positioning actuator |
Jan. 24, 2006 |
| 6950271 |
Disk drive and disk drive control method |
Sep. 27, 2005 |
| 6940677 |
Writing distinct servo patterns on individual transducers according to transducer read/write head characteristics in a data storage device |
Sep. 6, 2005 |
| 6924960 |
Timing compensation in a self-servowriting system |
Aug. 2, 2005 |
| 6914743 |
Vibration cancellation in a disk drive by using an acceleration sensor and adaptively adjusting its gain to minimize external acceleration effects |
Jul. 5, 2005 |
| 6906485 |
Spindle motor control using a current profile to taper current transitions |
Jun. 14, 2005 |
| 6888695 |
Information recording and reproducing apparatus having higher drive pulse frequency during seeking operation than during following operation |
May. 3, 2005 |
| 6873488 |
Enhanced MR offset with dynamic tuning range |
Mar. 29, 2005 |
| 6853511 |
Average position error measurement in a data storage device |
Feb. 8, 2005 |
| 6839196 |
Magnetic track following servo algorithm using signal quality |
Jan. 4, 2005 |
| 6795266 |
Magnetic disc drive |
Sep. 21, 2004 |
| 6785075 |
Self-writing servo and clock fields on a recording medium |
Aug. 31, 2004 |
| 6771455 |
Control system and control method for positioning a head above a desired position on disk |
Aug. 3, 2004 |
| 6678106 |
Determining data sector splits across servo bursts in a disc drive |
Jan. 13, 2004 |
| 6657801 |
Disk drive with improved characterization segment pattern and method of recording the same |
Dec. 2, 2003 |
| 6611397 |
Servo burst pattern defect detection |
Aug. 26, 2003 |
| 6600622 |
System and method for detecting displacement of disk drive heads on micro actuators due to contact with disks |
Jul. 29, 2003 |
| 6594103 |
Read channel generating absolute value servo signal |
Jul. 15, 2003 |
| 6545836 |
Servo control apparatus and method using absolute value input signals |
Apr. 8, 2003 |
| 6532130 |
Head for reading magnetically stored data |
Mar. 11, 2003 |
| 6525897 |
Apparatus for developing a dynamic servo signal from data in a magnetic disc drive and method |
Feb. 25, 2003 |
| 6389384 |
Servo processor code evaluation using a virtual disc drive |
May. 14, 2002 |
| 6381088 |
Apparatus for developing a dynamic servo signal from data in a magnetic disc drive and method |
Apr. 30, 2002 |
| 6268975 |
Tape drive utilizing encoded file markers to locate target positions |
Jul. 31, 2001 |
| 6266205 |
Parallel servo with ultra high bandwidth off-track detection |
Jul. 24, 2001 |
| 6249396 |
Magnetic media having partitioned and presaturated data tracks |
Jun. 19, 2001 |
| 6204989 |
Controlling a media master writing machine to produce curvilinear servo sector patterns |
Mar. 20, 2001 |
| 6157510 |
Magnetic storage device with multiple read elements which are offset laterally and longitudinally |
Dec. 5, 2000 |
| 6144516 |
Head displacement measuring method and apparatus and data recording/reproducing method and apparatus |
Nov. 7, 2000 |
| 6081401 |
Step gap head tracking servo |
Jun. 27, 2000 |
| 6078461 |
In situ offset correction for position error signal |
Jun. 20, 2000 |
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