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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
5402280 Method and apparatus for runout correction due to disk slip or spindle imbalance Mar. 28, 1995
5383070 Method and device for measuring disk drive alignment Jan. 17, 1995
5371637 Disk apparatus Dec. 6, 1994
5359504 Magnetic disk apparatus Oct. 25, 1994
5341351 Method and means for optimally accessing data residing on dual actuator DASDs Aug. 23, 1994
5333084 Electronically alignable flexible disk drive Jul. 26, 1994
5329409 Correction of current feedback offset for disc drive servo systems Jul. 12, 1994
5315451 Rotating storage track format emulation May. 24, 1994
5311379 Method and system for positioning head on target cylinder of disk May. 10, 1994
5305159 Magnetic disk apparatus Apr. 19, 1994
5305158 Positioning control apparatus Apr. 19, 1994
5303105 Shape memory alloy for centering a transducer carried by a slider in a support arm over a track on a magnetic disk Apr. 12, 1994
5299075 Apparatus and method for shock attenuation in a disk recording and/or reproduction system using variable gain acceleration sensor Mar. 29, 1994
5296995 Method of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatus Mar. 22, 1994
5283702 Power saving system for rotating disk data storage apparatus Feb. 1, 1994
5274511 Servo signal recording method and apparatus Dec. 28, 1993
5272578 Method for writing a uniform servo code into a magnetic disk drive Dec. 21, 1993
5270878 Magnetic recording and reproducing apparatus Dec. 14, 1993
5270880 Predictive read-write inhibit decision using fuzzy logic Dec. 14, 1993
5267110 Rotary actuator for a direct access storage device Nov. 30, 1993
5260846 Compact hard disk assembly having a head carriage positioning arts located within the outer circumference of a hard disk Nov. 9, 1993
5257149 Disc drive with offset address field Oct. 26, 1993
5255136 High capacity submicro-winchester fixed disk drive Oct. 19, 1993
5243479 Mounting structure for information recording and reproducing apparatus Sep. 7, 1993
5241431 Apparatus for adjustment of position slope for servo Aug. 31, 1993
5229901 Side-by-side read/write heads with rotary positioner Jul. 20, 1993
5210662 Tracking control apparatus for magnetic disk May. 11, 1993
5206570 Actuator servo compensation method Apr. 27, 1993
5202821 Sampled-data control system exhibiting reduced phase loss Apr. 13, 1993
5189578 Disk system with sub-actuators for fine head displacement Feb. 23, 1993
5177652 Dual-actuator transducer position control apparatus for seeking and following track on rotary disk Jan. 5, 1993
5172353 Track seeking control apparatus for use in data recording/reproduction systems having data tracks thereon Dec. 15, 1992
5166844 Disc drive apparatus having a mechanism for opening/closing the shutter of a disc cartridge Nov. 24, 1992
5165082 Method for writing servo signals on a servo disk in a magnetic disk apparatus Nov. 17, 1992
5162955 Apparatus for writing servo information onto a magnetic disk Nov. 10, 1992
5163162 System and method for data recovery in multiple head assembly storage devices Nov. 10, 1992
5153786 Extended range servo system for positioning a disk drive head over a selected track Oct. 6, 1992
5153789 Methods and apparatus for optimizing track seeking operations Oct. 6, 1992
5140476 Apparatus and method for tracing a track center of a magnetic disc Aug. 18, 1992
5140571 Disk drive apparatus with intermittently operated servo signal processor for low power consumption Aug. 18, 1992
5136439 Sectored servo position demodulator system Aug. 4, 1992
5136441 Position control device for positioning magnetic head on selected track Aug. 4, 1992
5119254 Data transducer position control system for rotating disk data storage equipment Jun. 2, 1992
5111348 Magnetic head including thermoelectric positioning means May. 5, 1992
5089757 Synchronous digital detection of position error signal Feb. 18, 1992
5087997 Position control system for read/write device Feb. 11, 1992
5077716 Optical recording and reproducing system having an accurate high-speed optical head positioning apparatus Dec. 31, 1991
5073832 Carriage controlling apparatus for floppy disk apparatus Dec. 17, 1991
5072318 Disk file with adaptive cancellation of nonrepeatable disk runout Dec. 10, 1991
5062019 Method and apparatus for accurately positioning a magnetic recording and reproducing head Oct. 29, 1991

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