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)
08/1989
08/29/1989US4862411 Multiple copy data mechanism on synchronous disk drives
08/29/1989US4862294 Disc erasing apparatus for selective erasure of disc tracks
08/29/1989US4862291 Scanning system in information reproducing apparatus
08/29/1989US4862051 Stepping motor's negative-phase braking control device
08/29/1989CA1258905A1 Slidable carriage mount for disc memory apparatus
08/23/1989EP0328556A1 Spherical pivoting actuator for read/record head
08/22/1989US4860271 Servo circuit for generating a tracking error signal for optical disk player
08/22/1989US4860137 Flexure-mounted radial access apparatus for disk recorder/player
08/22/1989US4860131 Method for recorrecting head position in a disk drive
08/22/1989US4859638 Magnetic head sliders, materials therefor, and the process for the production thereof
08/16/1989EP0328022A2 Interlocking braking and lock mechanisms for scanning apparatus of an information processing system
08/15/1989US4858221 Preformatted information medium and optical reader device
08/15/1989US4858046 Head feed device
08/15/1989US4858041 Tracking servo control
08/15/1989US4858040 Bimorph actuator for a disk drive
08/09/1989EP0327207A2 A method of writing a sector servo pattern for a record disk storage device
08/09/1989EP0327108A2 Transducer access control system
08/09/1989EP0326683A2 Capacitive measurement and control of the fly height of a recording slider
08/09/1989CN1004981B Regeneration-delaying method
08/08/1989US4855979 Disk playing method for disk player
08/08/1989US4855978 Video/compact disk player having reduced track search time
08/08/1989US4855977 Track seeking apparatus and method using sampled information
08/08/1989US4855853 Actuator for positioning heads in magnetic disc apparatus
08/08/1989US4855852 Mounting structure for magnetic head
08/08/1989US4855851 Head suspension for magnetic recording
08/08/1989US4855847 Video disk reproducing device having improved motor speed control
08/08/1989US4855654 Rotary body drive device
08/02/1989EP0326374A2 A moving coil linear motor
08/02/1989EP0325871A1 Memory unit
08/02/1989EP0179299B1 Alignment disk and method for producing it
08/01/1989US4853918 Tracking servo uses tangent function to determine tracking error signal
08/01/1989US4853913 Pick-up control circuits for disc information reproducing apparatus
08/01/1989US4853813 Magnetic head supporting device
08/01/1989US4853812 Structure for supporting magnetic head
08/01/1989US4853811 Magnetic disk drive with low profile head-suspension system
08/01/1989US4853810 Method and apparatus for controlling the flying height of the head in a magnetic storage unit
08/01/1989US4853808 Linear actuator for disc drive
07/1989
07/26/1989EP0325434A2 Track access control system
07/26/1989EP0324966A1 Plastic suspension arm assembly
07/26/1989EP0324962A2 Process for optimizing head position to overcome disk misclamping and imperfections
07/26/1989CN1034284A Disk drive having improved linear actuator
07/25/1989US4851939 Actuator driving apparatus and magnetic disk drive system with a smaller number of high power amplifiers than actuators
07/25/1989US4851933 Magnetic disk apparatus having magnetic head with pre-erase gap
07/25/1989US4851929 Recorder/player device with stationary recording medium and constant speed signal head drive
07/19/1989CN2041446U Sensor feed apparatus for reproducer of disc recording carrier
07/18/1989US4849955 Moving device for an optical recording system in a high density spiral track-forming apparatus
07/18/1989US4849840 Carriage device for floppy disk apparatus having head arm with regulating material
07/18/1989US4849819 Electronic still camera
07/11/1989US4847821 Process for searching for a track on a rotating plate-like information support and circuit for performing the process
07/11/1989US4847709 Reproducing apparatus
07/11/1989US4847708 Method and apparatus for automatically searching desired track position or recording region on information recording medium
07/11/1989US4847704 Disk driving device
07/11/1989US4847697 Reproducing speed control system for a video disk player
07/05/1989EP0323446A2 Recording and/or reproducing apparatus, in particular for still pictures
07/05/1989EP0323154A2 Data transducer position control system for disk storage drive system
07/04/1989US4845698 Method of skipping tracks while searching for a track and circuitry for carrying out the method
07/04/1989US4845697 Method of time limited searching for a track address on an optically read information disc
07/04/1989US4845579 Disc drive incorporating automatic wear compensation for a pivoted arm
07/04/1989US4845417 Driver for stepping motor
07/04/1989CA1256993A1 Device for translating a slide and electrodynamic apparatus comprising said device
06/1989
06/29/1989WO1989006035A1 Low drag stabilizer device for stabilizing the interface between a transducer and a moving medium
06/28/1989EP0321886A1 Method of speed-controlled positioning of a read/write head with regard to a rotating recording medium
06/27/1989US4843504 Superconductor devices useful for disk drives and the like
06/27/1989US4843502 Magnetic head slider loading mechanism for magnetic disk apparatus
06/27/1989US4843494 Data storage apparatus using optical servo tracks
06/22/1989DE3804825A1 Gedaempfte magnetkopfaufhaengungsanordnung Steamed magnetkopfaufhaengungsanordnung
06/21/1989EP0320975A2 Information recording/reproducing method and apparatus
06/21/1989EP0320593A2 Storage apparatus
06/21/1989EP0320520A1 A disk data storage file
06/20/1989US4841505 Pickup position control method enabling restart of reproduction after interruption
06/20/1989US4841499 Multi-disc player
06/20/1989US4841397 Head shifting device
06/20/1989US4841389 Magnetic transducer crash anticipation and response method and apparatus
06/20/1989US4841384 Servo protection circuit for disk drive
06/15/1989WO1989005506A1 Floppy disc drive with closed loop servoed high density read/write gap, and with low density read/write gap for the write updating of standard open loop formatted medium
06/14/1989EP0319803A2 Head position controlling circuit of a disc apparatus
06/13/1989US4839876 Track seeking using a track following loop
06/13/1989US4839756 Apparatus for read/write head loading and unloading in a data recording disk file
06/13/1989US4839753 Information recording disk
06/13/1989US4839751 Track-following servo for disk drive with multiple reference windows and time dependent logic circuitry
06/13/1989US4839543 Linear motor
06/07/1989EP0319247A2 Double-sided disk player
06/07/1989EP0318739A2 Apparatus for tracking an optical disc
06/06/1989US4837650 Head positioning device
06/06/1989US4837648 Floating magnetic head
05/1989
05/31/1989EP0318443A2 Track seeking using a track following loop
05/31/1989EP0317686A1 Data processing system using magnetic information carriers
05/31/1989EP0214256B1 System to ascertain the scanning speed of audio discs with contactless scanning
05/30/1989US4835754 Tracking control device of an optical pick-up
05/30/1989US4835753 Information playback system having an address search operation using a variable speed pickup positioning system
05/30/1989US4835644 Side loaded disk drive pivot
05/30/1989US4835643 Disk drive head actuator coil
05/30/1989US4835642 Magnetic head assembly for double-sided disk drive apparatus
05/30/1989US4835641 Magnetic disk apparatus
05/30/1989US4835633 Disk file digital servo control system with compensation for variation in actuator acceleration factor
05/30/1989US4835632 Disk file digital servo control system with multiple sampling rate
05/30/1989US4835631 Apparatus for controlling playback head tracking for rotary recording medium using average peak envelope position
05/30/1989US4835429 Flexible printed cable connected to an inner most end of motor coil
05/24/1989EP0317338A2 System and method for accessing tracks for optical disc apparatus
05/24/1989EP0316880A2 A magnetic head positioning mechanism for a magnetic disk device
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