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)
12/1998
12/01/1998US5844865 System for storing and reproducing information from a disc shaped information carrier
12/01/1998US5844814 Optical position sensing device and method for sub-micron measurement
12/01/1998US5844754 Stackable actuator assembly having spring retaining system
12/01/1998US5844753 Magnetic head junction board and manufacturing method for the same
12/01/1998US5844750 Actuator arm assembly having an actuator arm wiring pattern and a head suspension wiring pattern
12/01/1998US5844744 Head positioning control apparatus of disk drive and method of controlling the same apparatus
12/01/1998US5844742 Radial self-propagation pattern generation for disk file servowriting
12/01/1998US5844675 Interchangeable sample stage with integral reference surface for magnetic-head suspension measuring instrument
12/01/1998US5844420 Fixture for testing a head gimbal assembly employing a flex interconnect circuit
12/01/1998US5844396 Voice coil motor drive unit for magnetic disk drive having a wave shaping unit including zener diodes with zener voltage set higher than a voltage applied to the coil in positioning the magnetic head, and lower than the voltage applied to the coil in movi
12/01/1998US5844395 Speed detection apparatus, speed control motor, and track jump control circuit
11/1998
11/26/1998WO1998053445A1 Encoded servo track configurations, servo writing heads and systems/methods regarding same
11/25/1998EP0880128A1 Magnetic head and process for producing the head
11/25/1998EP0880055A1 A magnetic head attachment structure in a photographic film apparatus
11/25/1998CN1199907A Method of detecting position on disk, disk unit and disk
11/25/1998CN1199902A Slider and head
11/25/1998CN1199901A Timing based servo longitudinal addressing
11/25/1998CN1199828A Dual etch step process for air bearing design with three etch depths
11/24/1998US5841752 Disc drive unit
11/24/1998US5841751 Recording-medium driving apparatus and recording-medium driving method with playback signal defect detector
11/24/1998US5841739 Accessing method and apparatus for use in hybrid optical recording device
11/24/1998US5841610 Miniature hard disc system having single voice coil magnet motor
11/24/1998US5841609 Assembly connecting suspension to actuator arm utilizing adhesive injecting hole
11/24/1998US5841606 Magnetic recording/reproducing device with magnetic shield between voice coil motor and flexible cable
11/24/1998US5840135 Actuator arms for disk drives
11/24/1998CA2159495C Swing-type actuator
11/19/1998WO1998052195A1 Method for use in a disk drive to calibrate demodulator gain without a/d conversion of cpes signal
11/19/1998WO1998037546A3 Actuator latch with improved shock resistance
11/19/1998WO1998037545A3 Methods and apparatus for preventing disk drive damage due to microprocessor failures
11/19/1998WO1998034219A3 Suspension with biaxially shielded conductor trace array
11/19/1998EP0906617A3 Actuator latch with improved shock resistance
11/18/1998EP0878801A2 Image processing apparatus and method
11/18/1998EP0878800A2 Disk device and disk device calibrating method
11/18/1998EP0878791A1 Suspension with integrated conductor trace array having optimized cross-sectional high frequency current density
11/18/1998CN1199489A Roll-biased head suspension for reduced track misregistration
11/18/1998CN1199225A Disk device and disk device calibrating method
11/17/1998US5838519 Printed circuit board, magnetic disk apparatus with the printed circuit board, and method for connecting the printed circuit board
11/17/1998US5838517 Shock protected high stack density suspension system
11/17/1998US5838515 PWM/linear driver for disk drive voice coil actuator
11/17/1998US5838512 Apparatus for reproducing digital servo data and digital user data, for use in a disk storage system
11/17/1998US5838511 Storage device and recording medium formatting method using a phase shift between data sectors in adjacent cylinders
11/17/1998US5837963 Method of manufacturing a thin film magnetic head with identification marks
11/16/1998CA2237949A1 Image processing apparatus and method
11/12/1998WO1998050911A2 Information processing with a plurality of optical discs
11/12/1998DE19816909A1 Actuating element with piezoelectric element for head positioning mechanism
11/11/1998EP0877372A2 Head positioning system with photosensor
11/11/1998EP0877230A2 Circuit for lateral photoeffect position sensor
11/11/1998EP0838074A4 Air actuated latching mechanism rotationally resistant to rotational shock force
11/11/1998CN1198565A Actuator using piezoelectric element and magnetic head positioning mechanism using said actuator
11/10/1998US5835468 Optical disk, recording/reproducing apparatus and method for rapidly recording/reproducing data on/from an optical disk using gray coding
11/10/1998US5835311 Shock-resistant data storage system actuator assembly
11/10/1998US5835310 Insertable miniature hard disc drive having a reduced size transducer head suspension
11/10/1998US5835309 Rotating disk data storage device
11/10/1998US5835308 Integrally molded disk device actuator with ground path
11/10/1998US5835307 Magnetic disk unit having bent spring arm
11/10/1998US5835306 Integrated gimbal suspension assembly with assymetric bond pad
11/10/1998US5835304 Magnetic recording/reproducing device having a magnetic head and a lift arm presser assembly wherein a lift arm pressing spring pressers a lift arm downward at a point closer to the magnetic head than to a middle point between the magnetic head and a cent
11/10/1998US5835303 Disk drive information storage device
11/10/1998US5835302 Compensating for variations in torque capability of voice coil motors
11/10/1998US5835300 Dynamic compensation of servo burst measurement offsets in a disc drive
11/10/1998US5835224 To measure displacement in a direction of a movable object
11/10/1998US5834864 Magnetic micro-mover
11/10/1998US5834084 Dielectric layer comprising an epoxy interleaved with polytetrafluroethylene fibers
11/10/1998US5833871 Method of finishing the surface of a floating type magnetic head
11/10/1998US5832763 Gram load adjusting method for magnetic head suspensions
11/05/1998WO1998049810A2 Data storage and/or retrieval methods and apparatuses and components thereof
11/05/1998WO1998049677A1 Object positioning using discrete sliding mode control with variable parameters
11/04/1998EP0875887A1 Reduction of an error caused by a shock
11/03/1998US5831962 Optical pickup carrying system
11/03/1998US5831961 Information processing apparatus with probe undergoing circular motion
11/03/1998US5831797 Slider with mesa for optical disc data storage system
11/03/1998US5831795 Head loading mechanism for a disk drive
11/03/1998US5831792 Slider having a debris barrier surrounding a transducer
11/03/1998US5831791 Negative Pressure air bearing slider having transition region between positive and negative pressure regions
11/03/1998US5831790 Removable cartridge disk drive with a compact mechanism for engaging the disk cartridge and drive spindle motor
11/03/1998US5831787 Head position demodulating method
11/03/1998US5831786 Disk drive having position sensor for ramp load and unload, and method for its use
11/03/1998US5831782 Method and apparatus for supplying optimal bias current to a magnetic head
11/03/1998US5831781 Method and apparatus for detecting flying height variation of head in disk storage system
11/03/1998US5831733 Apparatus and methods for measuring gaps while compensating for birefringence effects in the measurement path
10/1998
10/29/1998WO1998048415A1 A flying magnetic head positioner having rotational fine positioning and adjustable actuator load
10/29/1998WO1998048412A2 Microactuator servo system in a disc drive
10/29/1998WO1998048411A1 Adjustable head loading apparatus
10/28/1998CN1197273A Levitation type head for accessing zone-texture storage medium and disk apparatus having levitation type head
10/28/1998CN1197267A Head suspension with self-shielding ingegrated conductor trace array
10/27/1998US5828632 Disk recording and reproducing apparatus
10/27/1998US5828629 Optical recording and/or reproducing apparatus with stupping motor drive frequency which is lower than resonant frequency of transmission system
10/27/1998US5828522 Velocity control of head load/unload mechanism in a disk drive using dither
10/27/1998US5828516 Method of detecting position of a head of disk recording system using a digital servo control method
10/27/1998US5828513 Servo address apparatus and positioning methods for read, write and seek operations in a direct access storage device
10/27/1998US5828512 Information processing apparatus having a floating-type head
10/27/1998US5828508 Technique for reducing overhead in a data storage system
10/27/1998US5828054 Focusing method and system for focus capture and focus control in optical disc system including detection of Quad Sum signal to close focus
10/22/1998WO1998047137A1 Runout calibration for disc drive system
10/22/1998WO1998047136A2 Processing of disc-drive pickup signals
10/22/1998WO1998046966A1 Apparatus and methods for measuring gaps while compensating for birefringence effects in the measurement path
10/22/1998WO1998031009A3 Actuator bearing cartridge for top down assembly
10/22/1998WO1998014935A3 A magnetic recording head having a carbon overcoat array on slider air bearings surfaces
10/21/1998EP0872009A1 One-piece magnet return path assembly for a disk drive actuator
10/21/1998EP0871867A1 Method and apparatus for positioning a magnetoresistive head
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