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Browse by Category: Main > Information Technology
Class Information
Number: 360/77.02
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track centering > Rotary carrier
Description: Subject matter which controls a transducer centering position relative to a circular revolving medium.










Sub-classes under this class:

Class Number Class Name Patents
360/77.04 By memory storage of repeatable error or correction 625
360/77.03 By nonmagnetic sensing (e.g., optical, capacitive) 253
360/77.05 By servo signal component from carrier surface separate from information signal bearing surface 199
360/77.07 By tracking signal recorded on or immediately beneath surface 234
360/77.06 Reproduced data signal used for tracking 198


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
8705198 Write position compensation Apr. 22, 2014
8707147 Viterbi decoder method and apparatus with RI detector in servo channel Apr. 22, 2014
8693131 Writing and reading user data using servo spirals Apr. 8, 2014
8674644 Motor drive circuit Mar. 18, 2014
8659250 Management apparatus of a rotating motor and an annexed load during power loss Feb. 25, 2014
8638522 Information recorder and information recording method for recording data after an occurrence of off track writing Jan. 28, 2014
8634159 Magnetic recording disk drive with three sensors for rotational and linear vibration compensation Jan. 21, 2014
8630055 Systems and methods for medium contact detection Jan. 14, 2014
8614858 Systems and methods for sync mark detection metric computation Dec. 24, 2013
8587889 Disk storage apparatus, disk control apparatus and write control method Nov. 19, 2013
8564898 Magnetic disk drive and control method Oct. 22, 2013
8559122 Integrated spiral certification head for media magnetic testing including PMR and LMR media Oct. 15, 2013
8553348 Disk drive and servo-control method therefor Oct. 8, 2013
8542458 Magnetic disk drive and method for controlling microactuator in magnetic disk drive Sep. 24, 2013
8520334 Disk storage device, controller of the same, controlling method performed by the same, and electronic device Aug. 27, 2013
8510931 Method to reduce servo pattern runout on a prewritten disc Aug. 20, 2013
8514512 Disk storage device, controller of the same, controlling method performed by the same, and electronic device Aug. 20, 2013
8488268 Disk device Jul. 16, 2013
8477447 Asymmetry correction in read signal Jul. 2, 2013
8467142 Recording medium, recording/reproduction device and method for controlling recording/reproduction device Jun. 18, 2013
8462453 Magnetic transfer method and magnetic transfer device Jun. 11, 2013
8412360 Method and system for robust attenuation of mechanical resonances using a multi-rate low pass filter Apr. 2, 2013
8405928 Analog techniques to decode signals extracted from computer-readable storage media Mar. 26, 2013
8405924 Method and apparatus for improved address mark detection Mar. 26, 2013
8339727 Transitioning between modes of control for motor of recording device Dec. 25, 2012
8339723 Split sector formatting of storage disks Dec. 25, 2012
8331053 Systems and methods for adjacent track interference (ATI) risk management Dec. 11, 2012
8320067 Refresh operations using write/read commands Nov. 27, 2012
8299744 Control techniques for motor driven systems Oct. 30, 2012
8299746 Move-sled-home device and method for use in optical disc drive Oct. 30, 2012
8300350 Magnetic disk drive using offset in positioning head to read data and head positioning method Oct. 30, 2012
8284090 Method and apparatus for analog to digital conversion of small signals in the presence of a large DC offset Oct. 9, 2012
8279546 Systems and methods for sync mark detection using correlation Oct. 2, 2012
8261172 Viterbi decoder method and apparatus with RI detector in servo channel Sep. 4, 2012
8228017 Control techniques for motor driven systems Jul. 24, 2012
8223452 Writing and reading user data using servo spirals Jul. 17, 2012
8213103 Write synchronization in patterned magnetic media Jul. 3, 2012
8212503 Driving circuit for voice coil motor and method thereof Jul. 3, 2012
8203800 Servo design in data storage media Jun. 19, 2012
8189285 Method and system for automatic time base adjustment for disk drive servo controllers May. 29, 2012
8179627 Floating guard band for shingle magnetic recording May. 15, 2012
8169728 Magnetic medium having an artificial pattern structure using a gradient of a magnetization reversal field and a method of use thereof May. 1, 2012
8154823 Information recording and reproducing apparatus, information recording and reproducing system, information processing apparatus and information reproducing apparatus Apr. 10, 2012
8154822 Analog techniques to decode signals extracted from computer-readable storage media Apr. 10, 2012
8154821 Magnetic head-positioning servo system, magnetic head test system and magnetic disk test system Apr. 10, 2012
8154813 Embedded servo on track for bit-patterned device Apr. 10, 2012
8139303 Method for production of magnetic recording medium, magnetic recording medium and magnetic recording and reproduction device Mar. 20, 2012
8134796 Embedded track information for patterned media Mar. 13, 2012
8107187 Transitioning between modes of control for motor of recording device Jan. 31, 2012
8102613 System, method and apparatus for determining track pitch in a hard disk drive to satisfy the requirements of both off-track capacity and adjacent track erasure Jan. 24, 2012

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