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Class Information
Number: 360/77.04
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track centering > Rotary carrier > By memory storage of repeatable error or correction
Description: Subject matter including a signal storage device which is used to generate a transducer head position control signal.

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

Patent Number Title Of Patent Date Issued
8693134 Alternating wedge repeatable runout (WRRO) pattern Apr. 8, 2014
8693131 Writing and reading user data using servo spirals Apr. 8, 2014
8670206 Disk drive estimating repeatable runout of reference pattern based on repeatable runout of phase error Mar. 11, 2014
8665550 Method and system for reducing a disturbance associated with repeatable runout of a removable disc loaded into a storage system Mar. 4, 2014
8659250 Management apparatus of a rotating motor and an annexed load during power loss Feb. 25, 2014
8643976 Method for improved repeatable runout learning in a disk drive Feb. 4, 2014
8625231 Adjusting VGA analog gain for misaligned servo sectors in a disk drive Jan. 7, 2014
8625229 Servo control in a patterned-media magnetic recording disk drive using a reference table Jan. 7, 2014
8611037 Magnetic disk drive and method for servo burst data correction Dec. 17, 2013
8564898 Magnetic disk drive and control method Oct. 22, 2013
8559126 Method and apparatus for positioning a magnetic-recording head Oct. 15, 2013
8553348 Disk drive and servo-control method therefor Oct. 8, 2013
8526484 Content reproduction apparatus, content receiving apparatus, method of reproducing content, program, and content reproduction system Sep. 3, 2013
8514512 Disk storage device, controller of the same, controlling method performed by the same, and electronic device Aug. 20, 2013
8482877 Magnetic recording media, method for servowriting on same, and hard disk drive Jul. 9, 2013
8405928 Analog techniques to decode signals extracted from computer-readable storage media Mar. 26, 2013
8385166 Repeatable run out compensation Feb. 26, 2013
8369041 Method and apparatus for reducing repeatable runout in storage systems Feb. 5, 2013
8358484 Manufacturing method of disk drive device capable of reducing amount of unbalance, disk drive device and subassembly thereof Jan. 22, 2013
8315008 Magnetic disk device and head position control method Nov. 20, 2012
8305705 Disk drive cross correlating track crossing signal with ideal signal to calibrate jog value Nov. 6, 2012
8295004 Method and apparatus for measuring disk runout in a disk drive Oct. 23, 2012
8279551 Head positioning method for eccentric track and head positioning control device Oct. 2, 2012
8189286 Disk drive employing velocity insensitive servo burst pattern May. 29, 2012
8169732 Reducing written-in errors in servo patterns May. 1, 2012
8159774 Disk device and offset control method thereof Apr. 17, 2012
8154821 Magnetic head-positioning servo system, magnetic head test system and magnetic disk test system Apr. 10, 2012
8154822 Analog techniques to decode signals extracted from computer-readable storage media Apr. 10, 2012
8120871 Method and apparatus for reducing repeatable runout in storage systems Feb. 21, 2012
8111474 Eccentricity correction method, signal processing circuit, magnetic storage apparatus and perpendicular magnetic recording medium Feb. 7, 2012
8094405 Repetitive error correction method for disk-drive servo control systems Jan. 10, 2012
8089720 Hard-disk drive Jan. 3, 2012
8068307 Position control apparatus and disk apparatus using the same Nov. 29, 2011
8059360 Disk drive compensating for radial phase change of repeatable position error due to servo writing from spiral tracks Nov. 15, 2011
8054574 Method of measuring non-coherent runout for a disk drive Nov. 8, 2011
8049987 Position control apparatus and disk apparatus using the same Nov. 1, 2011
8045282 Measurement of track eccentricity on bit patterned media Oct. 25, 2011
8045287 Self-servo-write method with repeatable runout compensation Oct. 25, 2011
8009382 Position control apparatus and disk apparatus using the same Aug. 30, 2011
7995304 Circuits that use a postamble signal to determine phase and frequency errors in the acquisition of a preamble signal Aug. 9, 2011
7961422 Disk drive computing data center off-track from repeatable runout of write servo track and read servo track Jun. 14, 2011
7953502 Position control method, position control device, and medium storage device having disturbance suppression function May. 31, 2011
7940488 Storage device and gain adjusting device May. 10, 2011
7940489 Method and apparatus for repeatable run-out compensation May. 10, 2011
7933091 Magnetic disk drive and control method thereof Apr. 26, 2011
7924519 Eccentricity determination for a disk Apr. 12, 2011
7920448 Runout detection method Apr. 5, 2011
7903366 Write-once type storage apparatus, control circuit, and control method Mar. 8, 2011
7903367 Apparatus, system, and method for repeatable runout cancellation Mar. 8, 2011
7894156 Determination of wedge offset correction values for a disk drive Feb. 22, 2011

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