| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 04/13/1994 | EP0592192A2 Magneto-optical recording and reproduction |
| 04/13/1994 | EP0591954A2 Magnetic head suspension assembly fabricated with integral load beam and flexure |
| 04/12/1994 | US5303223 Head carriage apparatus moved by a lead-screw shaft including resilient means for pressing the lead-screw shaft in a slanting direction toward the head carriage |
| 04/12/1994 | US5303105 Shape memory alloy for centering a transducer carried by a slider in a support arm over a track on a magnetic disk |
| 04/12/1994 | US5303104 Disk drive apparatus having carriage driving mechanism |
| 04/12/1994 | US5303103 Head drive mechanism with resilient signal transmitting member |
| 04/12/1994 | US5303101 Active magnetic latch for disk drive and method |
| 04/12/1994 | US5303100 Magnetic disk device with floating-type magnetic head |
| 04/12/1994 | US5303099 Hard disk driver including a flying head slider |
| 04/12/1994 | US5303096 Merging of heads into disk drives using low melting wax |
| 04/12/1994 | US5302560 Process for the production of magnetic head sliders |
| 04/12/1994 | CA2021359C Magnetic head suspension assembly in a disk drive |
| 04/12/1994 | CA1328505C Removable cartridge disc drive with radial arm voice coil actuator |
| 04/06/1994 | EP0590676A2 Magnetic disc unit |
| 04/06/1994 | EP0590226A1 Magnetic tape storage unit with improved ability to read data by using a set of multiple read elements |
| 04/05/1994 | US5301173 Optical recording apparatus with two tracking error signals |
| 04/05/1994 | US5301072 Sample data position error signal detection for digital sector servo |
| 03/30/1994 | EP0589726A2 Magnetic recording/reproducing apparatus |
| 03/30/1994 | EP0589270A1 Magnetic head suspension apparatus |
| 03/30/1994 | CN1084617A Air bearing magnetic head slider |
| 03/29/1994 | US5299183 Optical data record/reproduction apparatus with tubular coil body |
| 03/29/1994 | US5299083 Read/write head positioning mechanism for flexible disk drive device |
| 03/29/1994 | US5299082 Actuator assembly with compensated outer arms |
| 03/29/1994 | US5299081 Magnetic head suspension assembly |
| 03/29/1994 | US5299080 Floating head slider with improved suspension for use in magnetic/optical disk recording apparatuses |
| 03/29/1994 | US5299079 Flying head slider with control grooves to establish a uniform flying height |
| 03/29/1994 | US5299075 Apparatus and method for shock attenuation in a disk recording and/or reproduction system using variable gain acceleration sensor |
| 03/29/1994 | US5298730 Optical card apparatus in which retrial of locating operation of optical card is retried on another track at the time of loading the same |
| 03/29/1994 | US5297330 Forming magenetic gap in core chip for reading and writing information |
| 03/24/1994 | DE4331732A1 Access speed control circuit for optical disc systems - adds output of square wave oscillator to speed difference signal to control speed of head carriage moving coil motor. |
| 03/23/1994 | EP0587905A1 Data recording medium and data recording apparatus |
| 03/22/1994 | US5297127 Optical device |
| 03/22/1994 | US5297024 Voice coil driver with variable gain in seek and track-follow modes |
| 03/22/1994 | US5296986 Rotary intertial latch for disk drive actuator to protect against rotational shock force |
| 03/22/1994 | US5296985 Magnetic disk unit using negative pressure to counterbalance having head lifting mechanism |
| 03/22/1994 | US5296983 Slider spring under "tension-compression" |
| 03/17/1994 | WO1994006119A1 Magnetic head guidance and calibration system and method description |
| 03/16/1994 | EP0587458A2 Double-sided disk player |
| 03/16/1994 | EP0587350A2 Optical disc apparatus and miserasing preventing circuit and method |
| 03/16/1994 | EP0586597A1 Low profile head disk assembly |
| 03/15/1994 | US5295031 Rotary positioning apparatus |
| 03/15/1994 | US5295026 Magnetic disk drive |
| 03/15/1994 | CA2100019A1 Magnetic head suspension apparatus |
| 03/15/1994 | CA2091592A1 Disk recording/reporduction device and a method of operation thereof |
| 03/10/1994 | DE4330614A1 Head positioner control system for magnetic and magneto=optical disk storage device drives - contains head drive controller with periodic positioning error compensation system contg. repetitive controllers |
| 03/08/1994 | US5293282 Multiple actuator disk drive |
| 03/02/1994 | EP0584999A1 Disc drive apparatus |
| 03/02/1994 | EP0584983A1 Unitary magnetic transducer and suspension structure |
| 03/02/1994 | CN1083252A Zoned record carrier |
| 03/02/1994 | CN1023922C Sectored servo independent of data architecture |
| 03/01/1994 | US5291471 Recording/reproducing system using phase encoding of optical storage medium |
| 03/01/1994 | US5291464 Speed and position control apparatus for positioning a movable object |
| 03/01/1994 | US5291361 Disk drive with low elevated head unloading mechanism |
| 03/01/1994 | US5291360 Head suspension assembly for a disk drive |
| 03/01/1994 | US5291359 Head suspension assembly including a flexure having rails arranged for interfacing with a head ramp |
| 03/01/1994 | US5291348 High density servo tracking |
| 02/23/1994 | EP0583989A2 Slider for a magnetic head |
| 02/23/1994 | EP0583985A2 Method of making magnetic recording head slider and the resulting slider |
| 02/23/1994 | EP0583921A1 Unitary magnetic transducer and suspension structure for longitudinal operation |
| 02/23/1994 | EP0583797A1 Suspension arm mounting assembly |
| 02/23/1994 | EP0345352B1 Track-jump device for a disc device |
| 02/22/1994 | US5289450 Method of and apparatus for playing back recordable optical disc |
| 02/22/1994 | US5289408 Memory apparatus using tunnel current techniques |
| 02/22/1994 | US5289325 Rigid disk drive with dynamic head loading apparatus |
| 02/22/1994 | US5289088 DC linear motor |
| 02/16/1994 | EP0582720A1 Disk reproducing apparatus |
| 02/16/1994 | EP0582673A1 Head suspension assembly |
| 02/16/1994 | CN1082236A Predictive read-write inhibit decision using fuzzylogic |
| 02/16/1994 | CN1082233A Recording and reproduction of items of information using rom-ram storage media |
| 02/15/1994 | US5287235 Slider air bearing surface with angled rail configuration |
| 02/15/1994 | US5287234 Speed gain control based upon access time for each cylinder |
| 02/15/1994 | US5287046 Method and system for actuator control for direct access storage devices |
| 02/09/1994 | EP0582463A1 Voice coil motor and disc drive |
| 02/09/1994 | EP0582284A1 Magnetic head suspension assembly |
| 02/08/1994 | US5285435 Controlling positioning of recording/reproducing head by combining a position differentiation and a drive current integration |
| 02/08/1994 | US5285432 Track jump control circuit |
| 02/08/1994 | US5285431 Information storage device with head position detection outside a user utilizable region and an optical disk drive device having target velocity-controlled head actuation |
| 02/08/1994 | US5285337 Liquid-bearing data recording disk file with transducer carrier having support struts |
| 02/08/1994 | US5285327 Apparatus for controlling reading and writing in a disk drive |
| 02/02/1994 | EP0581364A1 Seal for bearings in small angle oscillation applications |
| 02/01/1994 | US5283776 Track-counting method for use in optical disk apparatus |
| 02/01/1994 | US5283773 Steering laser beam while etching optical servo tracks for magnetic disks |
| 02/01/1994 | US5283705 Head retracting mechanism for a magnetic disk drive |
| 02/01/1994 | US5283704 Rotary actuator for disk drive assemblies |
| 02/01/1994 | US5283702 Power saving system for rotating disk data storage apparatus |
| 01/31/1994 | CA2091911A1 Seal for bearings in small angle oscillation applications |
| 01/27/1994 | DE4224043A1 Recording and playback system for digital disc systems - has write protected servo information recorded on track sections to provide accurate positioning of heads |
| 01/25/1994 | US5282190 Data storage disk drive with a piezoelectric member and a resilient member between a head and a disk |
| 01/25/1994 | US5282103 Magnetic head suspension assembly fabricated with integral load beam and flexure |
| 01/24/1994 | CA2074496A1 Hard drive head array |
| 01/19/1994 | CN1081000A Method for controlling digital closed servo loop system, digital closed servo loop system, and disk storage apparatus using the system |
| 01/18/1994 | US5280340 Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings |
| 01/18/1994 | US5279775 Acousto-optical intensity control of laser beam during etching of optical servo information of magnetic media |
| 01/12/1994 | EP0578598A2 Hybrid servo pattern and demodulation system for direct access storage device actuator positioning |
| 01/12/1994 | EP0578228A2 Microactuator |
| 01/12/1994 | CN1023518C System and method for data recovery in multiple head assembly storage device |
| 01/11/1994 | US5278820 Apparatus and method for a radial access mechanism for a disk player/recorder |
| 01/11/1994 | US5278819 Disk storage device having a carriage locking mechanism |
| 01/11/1994 | US5278814 Apparatus for recording and reproducing information on and from an optical disk |
| 01/11/1994 | US5278714 Adjustable structure for attaching a rotary head to a rotary drum of a video cassette recorder |