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Browse by Category: Main > Information Technology
Class Information
Number: 360/78.08
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track changing > For rotary carrier (e.g., disc) > Specified spatial pattern during access
Description: Subject matter wherein the motion of the transducer head between tracks has at least one controlled change in direction.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8630056 Hybrid drive adjusting spin-up profile based on cache status of non-volatile semiconductor memory Jan. 14, 2014
8599510 Disk drive adjusting data track density based on write condition when writing to contiguous data tracks Dec. 3, 2013
8576511 Disk drive executing log structured writes to physical zones based on power mode Nov. 5, 2013
8125729 Disk drive and error-recovery processing method Feb. 28, 2012
8089720 Hard-disk drive Jan. 3, 2012
8031429 Multi-directional self servo-writing for a disk drive Oct. 4, 2011
7710683 Multi-arm disk drive system having interleaved read/write operations and method of controlling same May. 4, 2010
7706096 Disk drive device manufacturing method thereof, and method for specifying data track pitch for the disk drive device Apr. 27, 2010
7706094 Storage device and servo information writing method Apr. 27, 2010
7679851 Methods and structure for improved disk head switching to avoid zipper zones Mar. 16, 2010
7661189 Apparatus for adjusting static attitude of thin film magnetic head Feb. 16, 2010
7626778 Tape drive apparatus Dec. 1, 2009
7617358 Methods and structure for writing lead-in sequences for head stability in a dynamically mapped mass storage device Nov. 10, 2009
7561367 Bi-directional debris sweeping profile Jul. 14, 2009
7522364 Control circuit for information storage device Apr. 21, 2009
7486471 Methods and apparatus for constraining transducer velocity based on disk rotational latency while seeking in a disk drive Feb. 3, 2009
7477477 Hard disk drive and command execution method Jan. 13, 2009
7471486 Disk drive estimating seek time according to a seek profile and a variance group Dec. 30, 2008
7466506 Magnetic recording disk drive with head positioning servo control system for disk surfaces with identical servo patterns Dec. 16, 2008
7457077 Method and apparatus for optimally write reordering Nov. 25, 2008
7457069 Magnetic disk drive with flying height control, control method, and manufacturing method Nov. 25, 2008
7430093 Seek control method of hard disk drive, recording medium storing method and hard disk drive adopting method Sep. 30, 2008
7375917 Idle seek calibration method for magnetic disk drive and magnetic disk drive with an intermission calibration May. 20, 2008
7298572 Fly height adjusted sweep cycle for a disc drive Nov. 20, 2007
7295395 Sensing a prior transducer position by a motion pattern Nov. 13, 2007
7295396 Magnetic disk drive Nov. 13, 2007
7287315 Apparatus for measuring slider mounting position in magnetic head, and magnetic head manufacturing system using the measurement apparatus Oct. 30, 2007
7280309 Access performance adjusting method and storage apparatus Oct. 9, 2007
7208898 Near time-optimal jerk trajectory for positioning a control object Apr. 24, 2007
7209310 Disk drive identifying starting track by performing multiple load operations Apr. 24, 2007
7203029 Method and apparatus for controlling track seek servo of disk drive Apr. 10, 2007
7158340 Magnetic recording and reproducing apparatus and magnetic recording medium Jan. 2, 2007
7149044 Methods, apparatus and computer program products for writing tracks on a disk based on an available stroke Dec. 12, 2006
7123435 Method and apparatus for overwriting data in a disk drive Oct. 17, 2006
7120726 Virtual track for serpentine track format Oct. 10, 2006
7113363 Seek error retry method of a disk device and disk device Sep. 26, 2006
7061714 Disk drive modifying estimated seek times for a rotational position optimization algorithm based on change in estimated seek time parameter Jun. 13, 2006
7019927 Information signal recording and playback method and apparatus therefor Mar. 28, 2006
7002762 Method for intersymbol interference removal in data recovery Feb. 21, 2006
6995935 Methods for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness Feb. 7, 2006
6980386 Apparatus and method for writing data to an information storage disc Dec. 27, 2005
6950264 Disk drive system for controlling seek operations Sep. 27, 2005
6930849 Disk drive unit, controller for actuator, and method for controlling hard disk drive and disk drive unit Aug. 16, 2005
6927935 Method and apparatus for head positioning using servo control in a disk drive Aug. 9, 2005
6917490 System and method for storing information in a disk drive Jul. 12, 2005
6819522 Positioning control apparatus Nov. 16, 2004
6754019 System and method for implementing a rotary memory device Jun. 22, 2004
6747833 Magnetic disk drive with a head oscillation function and the control method thereof Jun. 8, 2004
6744591 Positioning control method Jun. 1, 2004
6724558 Servo writing in a disc drive with substantially identical heads having read and write elements in a radial offset position Apr. 20, 2004

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