Patents
Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963)
01/1995
01/19/1995WO1995002246A1 System architecture for hdd
01/18/1995EP0399513B1 Pit pattern detecting method
01/18/1995CN1097519A Sled moter sliding prevention circuit
01/17/1995US5383073 Magnetic head supporting apparatus having a fulcrum point of load support offset from a slider center in an air upstream direction
01/17/1995US5383071 Apparatus for tracking control using recorded pilot signals
01/17/1995US5383068 Head position recognition method, a speed calculation method, and a head movement speed control device
01/17/1995US5383065 Magnetic disk recorder
01/17/1995US5382887 Method and apparatus for compensating positioning error in magnetic-head and magnetic-disk tester
01/17/1995US5382851 Swing-type actuator
01/17/1995CA2012800C Reliably detecting track crossings and controls associated therewith for track seeking in optic disk recorders
01/17/1995CA1334034C Disc drive system
01/11/1995EP0633563A2 Tape drive machines
01/11/1995CN1027401C Disk file with liquid film head-disk interfase technical field
01/10/1995US5381400 Information carrier, information recording and/or reproducing apparatus, and information detecting apparatus
01/10/1995US5381399 Apparatus for moving a load
01/10/1995US5381290 Bi-stable mechanical latch for disk drive actuator
01/10/1995US5381289 Suspension for in-line offset head mounting
01/10/1995US5381287 Hard disc drive
01/10/1995US5381282 Inter-sample switching of servo control in direct access storage devices
01/10/1995US5381281 Disk drive system using multiple embedded quadrature servo fields
01/10/1995US5381279 Disk drive system with adjustable spindle and actuator power to improve seek and access performance
01/04/1995EP0632453A2 Method for determining reproduction position of a reproduction device
01/04/1995EP0632432A2 Pivot support for actuator arm
01/03/1995US5379171 Microminiature hard disk drive
01/03/1995US5378886 Magnetic head drive device having a cogged belt
12/1994
12/28/1994EP0631281A2 Speed independent, air bearing slider
12/28/1994EP0631278A2 Speed and skew independent, air bearing slider
12/28/1994EP0631277A2 ID-less data sector format and data controller for disk drive
12/28/1994EP0630512A1 Removable cartridge disk drive for receiving a cartridge housing a 105mb 3.5 inch hard disk
12/28/1994EP0414702B1 Voice coil actuator
12/28/1994EP0406256B1 Disc drive fine servo velocity control and method for head positioning relative to a disc
12/27/1994US5377065 Miniature hard disk drive for portable computer having a rotary inertial latch for disk drive actuator
12/27/1994US5377064 Structure for supporting a slider with magnetic head for a linear magnetic disk unit
12/27/1994US5377063 Floating head slider and magnetic head for magnetic recording and reproducing
12/27/1994US5377058 Fly height servo control of read/write head suspension
12/22/1994WO1994029862A1 Rolling actuator bearing
12/21/1994EP0630006A1 Disc data recording and/or reproducing apparatus
12/21/1994EP0630003A2 Speed control motor and speed detection apparatus
12/20/1994US5375115 Disk recording and reproducing apparatus having a guide shaft compression mechanism which secures a guide shaft along which the head moves
12/20/1994US5375108 Optical disk device and method for controlling head movement thereof
12/20/1994US5375020 Method and apparatus for writing or reading servo information
12/14/1994EP0628964A2 Recording and/or reproducing apparatus
12/13/1994US5373403 Method and apparatus for automatic gain control amplifier adjustment for a magnetic medium
12/13/1994US5371939 Head locator for mounting a head to a gimbal
12/08/1994DE4418606A1 Self-locking positive guidance for an actuating element of a disk unit
12/07/1994EP0627732A1 Thin film transducer with reduced flying height
12/07/1994EP0627114A1 Method of reading a recording medium and system using said method
12/07/1994EP0627113A1 Data recording medium, recorder, reader and recording method
12/06/1994US5371726 Velocity controlling apparatus
12/06/1994US5371724 Data transducer positioning system with an overrun prevention capability
12/06/1994US5371637 Of a contact-start-stop system
12/05/1994CA2123436A1 Thin film transducer with reduced flying height
11/1994
11/30/1994EP0626687A1 Optical disk apparatus utilizing memory allocation
11/30/1994EP0626685A2 Digital signal processor for a disk drive
11/30/1994CN1026836C Slider and disk storage apparatus with the slider
11/29/1994US5369538 Rotary disk drive actuator
11/29/1994US5369535 Fixed block architecture disk file with improved position identification and error handling
11/29/1994US5369345 Method and apparatus for adaptive control
11/23/1994EP0625780A2 Signal reproducing apparatus
11/23/1994EP0625755A2 Median value detection technique
11/22/1994US5367419 Floating magnetic head slider with flexure wings located within slider L-shaped members and upper surface of slider
11/22/1994US5365700 Apparatus and method for producing magnetic head sliders
11/17/1994EP0624305A1 Carrier strip head interconnect assembly
11/17/1994DE4407472A1 Speed and position estimator
11/15/1994US5365586 Method and apparatus for fingerprinting magnetic media
11/15/1994US5365503 Digital recording and reproducing apparatus
11/15/1994US5365389 Crash stop and magnetic latch for optimum use of disc space
11/15/1994US5365060 Relative velocity sensing device
11/10/1994WO1994025822A1 Interferometric flying height measuring device
11/08/1994US5363359 Method and apparatus for generating velocity error signals
11/08/1994US5363354 Disk player with variable level search time
11/08/1994US5363262 Disk drive having an improved transducer suspension assembly
11/08/1994US5363261 Disk drive actuator latch
11/08/1994US5363260 Magnetic disk apparatus and method for manufacturing the same
11/08/1994US5363253 Tape drive fast seek to end-of-track
11/02/1994EP0622783A2 Servo circuit for magnetic disk apparatus
11/02/1994EP0622782A2 Disk drive with passive multiple fly height slider and cooperative disk pattern
11/02/1994CN1026448C Tribo-attractive contact data storage system
11/01/1994US5361182 Magnetic carriage latch for a disc drive
11/01/1994US5361136 Apparatus for detecting crosstalk in reproduced high-vision signal
11/01/1994CA2014172C Track access control system in rotating disc devices with eccentricity correction
10/1994
10/27/1994WO1994024669A1 Magnetic recording head with continuously monitored track following servo
10/27/1994WO1994024641A1 Method and apparatus for process control, tension control, and testing of magnetic media
10/27/1994WO1994024639A1 Method and apparatus for noise reduction in magnetic media
10/27/1994WO1994024638A1 Method and apparatus for fingerprinting and authenticating magnetic media
10/27/1994CA2159801A1 Method and apparatus for fingerprinting and authenticating magnetic media
10/27/1994CA2159800A1 Method and apparatus for noise reduction in magnetic media
10/26/1994EP0621586A1 Optical disk drive
10/26/1994CN1094177A Rotary information recording/reproducing apparatus
10/25/1994US5359474 System for the sub-micron positioning of a read/write transducer
10/25/1994CA2014535C Apparatus for recording and reproducing information on and from an optical disk
10/25/1994CA1332761C Distance-controlled tunneling transducer and direct access storage unit employing the transducer
10/19/1994EP0620548A1 Recording and/or reproducing apparatus and method of controlling same
10/19/1994EP0620547A2 Magnetic recording medium and magnetic recording reproducer
10/18/1994US5357386 Disc drive with head/disc assembly having sealed connectors
10/18/1994US5357384 Rotating disk data storage apparatus capable of preventing head travel when the disk is not loaded
10/12/1994EP0619042A1 A disk recording system
10/11/1994US5355486 System for allocating tasks between two actuators servicing the same magnetic disk media in a single disk drive
10/11/1994US5355267 Suspension attachment apparatus for a disk drive
10/11/1994US5355260 Servo system for positioning a read/write head within a storage device with means for detecting malfunctions in the servo data