Patents
Patents for G11B 19 - Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function (26,229)
09/1987
09/16/1987EP0237096A1 Record player
09/16/1987EP0236534A2 Data recording floppy disc with a safety switch
09/15/1987US4694446 Simplified sound reproducing device of random selecting type
09/15/1987US4694445 Record disc replacing means for a selective playing type sound reproducing device
09/15/1987US4694442 Disc reader with obliquity correction
09/15/1987US4694365 Recording medium for recording and/or reproducing apparatus
09/15/1987US4694163 Apparatus for scanning sheet-shaped recording medium with a bending roller
09/15/1987CA1226961A1 Sound generation and disk speed control apparatus for use with computer systems
09/09/1987EP0235615A2 Security device with security key for personal and work place computers
09/09/1987EP0235275A1 Video apparatus operable in a quiescent state
09/08/1987US4692915 Recording and reproduction apparatus having improved reliability with respect to externally applied vibration or impact
09/08/1987US4692832 Method for lowering the frictional coefficient of the magnetic head-disk interface in a lubricated magnetic disk storage system
09/08/1987US4692829 Magnetically biased aerodynamically released integral safety latch for rigid disk drive
09/08/1987US4692815 Photographing and recording method and apparatus for electronic still picture cameras
09/02/1987EP0234594A2 System capable of retrieving information from an optical memory
09/01/1987US4691311 Disc reading apparatus with disc shoot journaled in frame
09/01/1987US4691310 Compact disk read only memory recording system with speed control
09/01/1987US4691255 Power saving circuit arrangement for data transfer apparatus with a disklike record medium
08/1987
08/27/1987WO1987005144A1 Apparatus for the recording and/or play back of information on resp. by a driven recording medium
08/27/1987DE3702783A1 Recording and/or reproducing system
08/26/1987EP0233207A1 Stopping system for record-player.
08/25/1987US4689778 Optical disc recording/reproducing apparatus with recorded track-section detector
08/25/1987US4689705 Counter device for a magnetic recording disk cartridge
08/25/1987US4689698 Disk drive control for inhibiting operation upon battery voltage drop
08/18/1987US4688112 Power-saving data transfer apparatus with a flexible magnetic disk or the like
08/18/1987US4688107 Information recording and regenerating system
08/18/1987US4687596 Polar carrier, polyol, magnetic particles, surfactant
08/12/1987EP0232134A2 Optical disc and disc drive apparatus for writing/reading data into/from the disc
08/11/1987US4686665 Mode switching device in a disc playback device
08/11/1987US4686595 Apparatus for repositioning a transducer in the absence of electrical current to a drive system
08/11/1987US4686593 Overriding loading door for a magnetic recording/reproducing apparatus
08/11/1987US4686592 Disk drive assembly
08/11/1987US4686587 Record and/or playback device with cue signal indication and access
08/06/1987DE3702814A1 Recording and/or replay device
08/05/1987EP0231009A2 Optical recording medium
08/05/1987EP0230963A2 Information processing apparatus
08/04/1987US4685097 Power control system for a semiconductor laser
08/04/1987US4685095 Optical storage and retrieval device
07/1987
07/29/1987EP0230275A2 Reader/writer apparatus for optical memory card
07/28/1987US4683385 Pulse number detection circuit
07/21/1987US4682312 Disc player with search noise suppression
07/21/1987CA1224565A1 Twin track vertical read-write head structure
07/15/1987EP0228848A2 Disc reproducing apparatus
07/15/1987EP0228738A1 Disc player
07/14/1987US4680746 Recording disc rotary drive control apparatus
07/14/1987US4680744 Disc player having pick-up tilt servo system combined with disc presence detection circuits
07/08/1987CN86108503A Miniature motor
07/07/1987US4679181 Method for detecting an error in loading a recording disc
07/07/1987US4679102 Method and means for parking read/write heads in a disc drive using the back-EMF of the spindle motor to operate a stepper motor
07/07/1987US4679101 Information recording or erasing apparatus
07/02/1987WO1987003996A1 Magnetic recording/regenerating apparatus
07/01/1987EP0227158A1 Device for determining a centring error of an information structure in an optical record, record-scanning apparatus provided with such device and record carrier for use in this apparatus
07/01/1987EP0227061A2 Disk drive apparatus providing increased track density
06/1987
06/30/1987US4677658 Remote dictating apparatus
06/30/1987US4677510 Data transfer apparatus with a disklike record medium
06/30/1987US4677509 Spindle assembly for magnetic disks
06/30/1987US4676672 Precision spindle
06/24/1987EP0226309A2 Card reading apparatus
06/24/1987CN86108820A Rotary brake rigging and its making method
06/23/1987US4675856 Optical storage and retrieval device
06/23/1987US4675855 Reproducing rate control apparatus for information recording disc
06/23/1987US4675763 Magnetic disk drive with a disk leveling mechanism
06/23/1987US4675749 Disc player system with digital information demodulation operation
06/16/1987US4674080 Disc loading and unloading apparatus for use in a disc player
06/16/1987US4673997 Electrically conductive ferrofluid bearing and seal apparatus and low-viscosity electrically conductive ferrofluid used therein
06/16/1987CA1223067A1 Servo data driven motor speed control
06/10/1987EP0224852A2 Construction for installing a stepping motor of a floppy disk drive unit
06/10/1987EP0224498A1 Record playback counter
06/09/1987US4672597 Clock signal reproducing circuit for a player reproducing information of a disc
06/09/1987US4672595 System for controlling rotary drive of recorded disk player
06/09/1987US4672486 Apparatus for rotating a magnetic disc
06/09/1987US4672474 Synthetic control track signal producing apparatus for video tape machines
06/04/1987DE3542542A1 Disc drive
06/03/1987EP0224465A2 Variety mode selection device and process for automatic changer apparatus
06/03/1987EP0224378A2 Means for parking read/write heads in a disc drive using the back-emf of the spindle motor to operate a stepper motor
06/03/1987EP0224250A2 Optical recording medium and method and apparatus for correcting angular deviation thereof
06/02/1987USRE32431 System for rotating an information storage disc at a variable angular velocity to recover information therefrom at a prescribed constant rate
06/02/1987US4670868 Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items
06/02/1987US4670867 Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items
06/02/1987US4670866 Recording medium disk continuous-driving apparatus
06/02/1987US4670799 Erasing apparatus
05/1987
05/27/1987EP0223676A1 Rotation driving system for at least one magnetic disc, and electrical motor included in this system
05/27/1987EP0223611A2 Method for mapping around defective sectors in a disc drive
05/27/1987EP0223576A2 Light control circuit of an optical disc system
05/27/1987DE3541681A1 Method and device for the electronic recording of texts
05/27/1987CN86107104A Record disc replacing means for a selective playing type sound reproducing device
05/26/1987US4669075 Optical disk control apparatus
05/26/1987US4669072 Control apparatus for optical video disk recorder/player
05/26/1987US4669009 Floppy disc recording and/or reproducing apparatus having a loading mechanism for loading a cartridge which accomodates a floppy disc
05/26/1987US4669007 Magnetic recording/reproducing apparatus
05/21/1987WO1987003132A1 A storage disk drive mechanism
05/19/1987US4667314 Compact disc player for playing a sequence of discs and selecting a sequence of stored programs in each disc to be played
05/19/1987US4667258 Disk drive with multiple head cartridge
05/19/1987US4667137 Single excitation pulse brushless DC motor
05/13/1987EP0221097A1 Elastic support system with adjustable shock absorption for record players.
05/12/1987US4665454 Data transfer apparatus for use with a magnetic disk cartridge
05/12/1987US4665453 Floppy disc recording and/or reproducing apparatus
05/12/1987US4665446 Magnetic recording and reproducing apparatus
05/12/1987US4665445 Floppy disk drive apparatus
05/12/1987US4665443 Signal recording and reproducing apparatus