Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › G11B 21 - Head arrangements not specific to the method of recording or reproducing
Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963)
12/1999
12/07/1999US5999361 Servo control device and method using a minimal bias table for displacement control of a plant responsive to bias forces
12/07/1999US5999359 Head positioning system with photosensor
12/07/1999US5999351 Multi-track density direct access storage device
12/07/1999US5997755 Damage-reduced magnetic head
12/01/1999EP0864147A4 Fault-tolerant sample-data servo pattern
12/01/1999EP0804793B1 Fm detection of slider-disk interface
12/01/1999CN1237260A Disc head slider having surface discontinuities to minimize fly stiction
11/1999
11/30/1999US5995479 Optical head adjusting apparatus
11/30/1999US5995478 Optical disk player having a phase adjusting device for optical pickup
11/30/1999US5995466 Optical pickup lens cleaning device for double-sided disk player
11/30/1999US5995464 Transporting device for moving a reproducing head of an information recorded disk reproducing apparatus
11/30/1999US5995461 Method and system for simultaneous storage and/or retrieval (storval) of a plurality of data on a disk means
11/30/1999US5995335 In-stack adjustable magnetic head suspension
11/30/1999US5995330 Rigid disk drive with dynamic head loading apparatus
11/30/1999US5995329 Hard magnetic disc unit having head gimbal assemblies
11/30/1999US5995328 Multi-layered integrated conductor trace array interconnect structure having optimized electrical parameters
11/30/1999US5995327 Magnetic disk device for restraining vibration of head mounting part
11/30/1999US5995326 Head gimbal protection for a disk drive
11/30/1999US5995322 Magnetic disk apparatus
11/30/1999US5995321 Carriage structure for disk device
11/30/1999US5995318 Head positioning control system for disk drives each formed by assembling disks after servo control information is written externally on respective disks and disk drive
11/30/1999US5995317 Method and apparatus for real-time filtering of a position error signal for a disk drive servo system
11/30/1999US5995316 initialization method and apparatus for a runout cancellation method
11/30/1999US5995310 Magnetic disk device with dummy write function
11/30/1999US5995305 Disk drive using off-track margin to obtain optimal performance parameters
11/30/1999US5994035 Overcoating with protective film and photoresist; development;etching
11/25/1999WO1999060571A1 Method and apparatus utilizing field ratioing demodulation techniques for a null-type servo pattern
11/25/1999WO1999060570A1 Surface hardened swage mount for improved performance
11/25/1999WO1999060567A1 Asynchronous analog demodulator and method for a null-type servo pattern
11/25/1999WO1999060566A1 Asynchronous digital demodulator and method for a null-type servo pattern
11/25/1999WO1999060565A1 Surface hardened swage mount for improved performance
11/24/1999EP0959460A1 A method and system for writing a timing-pattern on a storage medium
11/24/1999EP0959459A1 A method and system for determining which of a plurality of heads in a recording device writes the widest track
11/24/1999EP0959458A1 Disk device
11/24/1999EP0959457A1 Disk device
11/24/1999EP0959456A1 Disk device
11/24/1999EP0959455A1 Disk device
11/24/1999CN1236504A Automatic gain control circuit, e. g. for use in a hard disk drive
11/23/1999US5991257 Disk with zones of tracks segmented into data frames, with tracks closer to the disk edge having more frames, and a data recording/reproducing method and apparatus using such disk
11/23/1999US5991249 Optical track sensing device
11/23/1999US5991247 Optical information recording/reproducing apparatus and method wherein an elastic member supporting an objective lens holder is set in a neutral state
11/23/1999US5991124 Rotary disc drive actuator utilizing plural axially spaced and partially overlapped voice coils
11/23/1999US5991120 Contact type magnetic disk apparatus
11/23/1999US5991118 Slider for magnetic head and magnetic memory apparatus
11/23/1999US5991115 Method and apparatus for determining separation between read and write elements of a transducer
11/23/1999US5991114 Disc drive having gram load reducer and method of operating gram load reducer
11/23/1999US5991113 Slider with temperature responsive transducer positioning
11/23/1999US5991112 Non-contact servotrack writing with phase sensitive detection
11/23/1999US5987733 Method of making a flexure vertical motion stop
11/18/1999WO1999059150A1 Controlling a media master writing machine to produce curvilinear servo sector patterns
11/18/1999WO1999059147A1 Near field optical head and reproduction method
11/17/1999CN1235351A Mask and expoure method thereof
11/16/1999US5986853 Transducer suspension system
11/16/1999US5986850 Positive pressure optical slider having wide center rail
11/16/1999US5986846 Methods and apparatus for track centering an arcuate scanner head assembly
11/16/1999US5986845 Apparatus for positioning magnetic head and method of the same
11/16/1999US5986833 Data recording method for recording absolute address data on a tape storage medium
11/16/1999US5986451 Low z-height loader for a head gimbal assembly
11/16/1999US5986426 Adaptive pulse width modulated motor control
11/16/1999US5986362 Magnetic circuit for voice coil motor of flat-coil type
11/16/1999US5985403 Sliding durability; fluoro compound and extreme pressure lubricants; wear and friction resistance; computers
11/16/1999US5985163 Partially etched protective overcoat for a disk drive slider
11/16/1999US5984104 Protective carrier for magnetic head assembly
11/11/1999WO1999049460A3 Optical scanning unit comprising a first and a second lens unit
11/10/1999EP0955629A1 Method for manufacturing a hard disk read/write unit, with micrometric actuation
11/10/1999EP0954862A1 Impact features on suspensions for improved damage resiliancy in disk drives
11/10/1999CN1234581A Method and apparatus of producing information storage device
11/09/1999US5982735 Tilt angle adjustable mechanism for compact disc recording/reproducing device
11/09/1999US5982711 Device for reading data from or writing data to magnetic storage media and a method of positioning a tape head relative to the magnetic storage media
11/09/1999US5982589 Head drum assembly for use in a video cassette recorder
11/09/1999US5982588 Elongated rear bearing for linear actuator
11/09/1999US5982584 Integrated lead suspension flexure with serially arranged metal-backed and suspended insulator portions for hygrothermal compensation
11/09/1999US5982582 Flying-type magnetic head and having rhombic or cut rhombic lubricating surfaces
11/09/1999US5982579 Magnetic disk apparatus and method and apparatus for assembling magnetic disk apparatus
11/09/1999US5982573 Disk drive and method for minimizing shock-induced damage
11/09/1999US5982571 Disk drive with closed loop commutator and actuator oscillator
11/09/1999US5982570 Information storing device and method for controlling same to record/reproduce information by selecting one of working modes
11/09/1999US5982494 Non-contact position sensor
11/09/1999US5979249 Actuator resonance tester for a disk drive
11/09/1999US5979236 Balancing apparatus
11/02/1999US5978752 Model validation algorithm for characterizing parameters and uncertainty in a disc drive
11/02/1999US5978350 Optical disc and optical disc driving device
11/02/1999US5978329 Technique for closed loop servo operation in optical disc tracking control
11/02/1999US5978177 Magnetic head suspension comprising a flexure bonded to a load beam via a flexible resin
11/02/1999US5978176 Magnetic head for a magnetic disk having a slider with indented portions for providing heat dissipation
11/02/1999US5978174 Magnetic recording component
11/02/1999US5978170 Recording/reproducing apparatus and servo-information recording method
11/02/1999US5978169 Repeated servo runout error compensation in a disc drive
11/02/1999US5978168 MR head differential micro-jog
11/02/1999US5978167 Disk unit creating a position sensitivity correction value using positive and negative cross point values of two-phase servo signals
11/02/1999US5978166 Method of and apparatus for positioning a rotary magnetic head drum in an arcuate scan system
11/02/1999US5974663 Method of manufacturing connecting rod
10/1999
10/27/1999EP0951718A1 Bernouilly type flexible media stabilization for laser servowriting
10/27/1999CN1233054A Magnetic head
10/27/1999CN1232995A Image forming method
10/26/1999US5974013 Disc reproducing apparatus and head position calculating method
10/26/1999US5974007 Apparatus for moving a carriage assembly from an initial position to a target position
10/26/1999US5974006 Method for reading CD-ROM
10/26/1999US5973888 Crash stop and disk drive employing the crash stop
10/26/1999US5973886 Adjustable head load ramp for digital video disk drive system
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