| 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) |
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| 05/16/1989 | US4831243 Information memory apparatus for reading out information from a moving recording medium |
| 05/16/1989 | US4829657 In-spindle motor assembly for disk drive and method for fabricating the same |
| 05/10/1989 | EP0315195A2 Optical disc player |
| 05/09/1989 | US4829508 Carriage tilt control in an optical disk player |
| 05/09/1989 | US4829504 Apparatus for reproducing signals recorded on discs |
| 05/09/1989 | US4829502 Automatic loading disc player |
| 05/09/1989 | US4829497 Optical disc recording method and apparatus for digital data having a plurality of transmission rates |
| 05/09/1989 | US4829393 Automatic magnetic recording medium ejecting mechanism for use in a magnetic recording medium driving unit |
| 05/09/1989 | US4829388 Magnetic recording apparatus |
| 05/09/1989 | CA1253963A1 Electro-optical device |
| 05/03/1989 | EP0314390A1 Semiconductor laser control circuit |
| 05/02/1989 | US4827467 Record-player switch-off device |
| 05/02/1989 | US4827463 Disc memory device |
| 05/02/1989 | US4827168 Sealing structure in a motor for magnetic discs |
| 04/26/1989 | EP0313110A2 Autochanger type disc player |
| 04/25/1989 | US4825431 Disc reproducing apparatus |
| 04/25/1989 | US4825324 Still video camera with continuous picture-taking mode |
| 04/25/1989 | US4825315 Magnetic disc driving device |
| 04/25/1989 | US4825314 Disc drive |
| 04/25/1989 | US4825309 Circuit arrangement for the selective suppression and nonsuppression of read output in magnetic disk apparatus |
| 04/25/1989 | US4825302 Video recording camera |
| 04/25/1989 | US4825137 Time base control system for a spindle servo |
| 04/25/1989 | US4824122 Compact magnetic fluid low pressure seal |
| 04/25/1989 | CA1253249A1 Signal recording and reproducing apparatus for an opto-magnetic disk |
| 04/19/1989 | EP0312105A2 Optical disk player |
| 04/19/1989 | EP0312103A2 A disc rotating apparatus of a magnetic disc apparatus |
| 04/18/1989 | US4823214 Disk drive for cartridge disks |
| 04/18/1989 | US4823213 Recording and reproducing disc driving apparatus |
| 04/18/1989 | US4823203 Rotation speed detection circuit in a video disc playback device for detecting a state in which the rotation speed is double a normal speed |
| 04/18/1989 | US4823196 Image storage and retrieval apparatus |
| 04/12/1989 | EP0310756A2 Magnetic disk unit |
| 04/11/1989 | US4821251 Method and apparatus for recording or reproducing information in or from only a sector of an optical disk track without any defect by shifting a light beam to an adjacent track before a defective sector |
| 04/05/1989 | EP0309878A2 Method and/or device for programming audio or video apparatuses |
| 04/05/1989 | EP0309757A1 Retract/extract device for a record carrier |
| 04/04/1989 | US4819221 Apparatus for reading record carriers having substantially concentric or spiral tracks |
| 04/04/1989 | US4819153 Microprocessor controlled rigid disk file subsystem |
| 04/04/1989 | US4819104 Disk pack drive with electric motor having sintered permanent magnets |
| 04/04/1989 | US4819093 Rotary magnetic recording-reproducing apparatus with disc track checking |
| 04/04/1989 | US4818907 Brushless motor for driving magnetic disks |
| 03/28/1989 | US4817070 Information handling system for use with information containing storage discs |
| 03/28/1989 | US4817067 Optical recording medium |
| 03/28/1989 | US4816945 Improved locking and ejection mechanism for magnetic disk pack recording and reproducing apparatus |
| 03/28/1989 | US4816944 Recording and/or reproducing apparatus |
| 03/28/1989 | US4816942 Spring powered transducer retractor mechanism for data transfer apparatus |
| 03/28/1989 | US4816938 Process for determining data disk track centers |
| 03/28/1989 | US4816937 Recording and/or reproduction apparatus capable of retaining start up information |
| 03/28/1989 | US4816935 Video floppy system |
| 03/28/1989 | US4816934 Power-saving read/write circuit for apparatus for digital data transfer with a magnetic disk |
| 03/28/1989 | US4816722 Digital phase-locked loop filter |
| 03/23/1989 | DE3831022A1 Device for preventing the inadvertent insertion of a disc into a CD player in vehicles |
| 03/21/1989 | US4815066 Recording and/or reproducing apparatus |
| 03/21/1989 | US4815063 Disc motor control circuit for controlling the rotation of a disc in a disc playing device |
| 03/21/1989 | US4814914 Disc driving device having a reinforced base |
| 03/21/1989 | US4814913 Compact magnetic disc assembly |
| 03/21/1989 | US4814904 Method of controlling erasing following format writing in a magnetic disc apparatus |
| 03/21/1989 | US4814652 Disk drive motor with thermally matched parts |
| 03/15/1989 | EP0307294A2 Auto-ejector of disk-like recording mediums |
| 03/15/1989 | EP0307136A2 Disk file including disk stack subassembly and method of assembly thereof |
| 03/14/1989 | US4812933 Magnetic disc recording and reproducing device |
| 03/14/1989 | US4812922 Still video signal playback apparatus with still video recording function |
| 03/09/1989 | WO1989002190A1 Automatic gain control system |
| 03/09/1989 | WO1989001850A1 An adaptive vision-based controller |
| 03/08/1989 | EP0306151A2 Fast speed reproduction system for a digital disc |
| 03/08/1989 | EP0306128A2 Disk player and scanning method therefor |
| 03/08/1989 | EP0305927A2 Optical card processing apparatus |
| 03/08/1989 | EP0305523A1 Optical card recording apparatus |
| 03/08/1989 | EP0305498A1 Crash-prevention for disk drive positioning system. |
| 03/08/1989 | EP0305480A1 In-spindle motor assembly for disk drive and method for fabricating the same. |
| 03/07/1989 | US4811319 Multi-disk player system |
| 03/07/1989 | US4811317 Clock resynchronization after a track jump |
| 03/07/1989 | US4811139 Device for recording and reproduction having head moving means |
| 03/07/1989 | US4811125 Information recording/regenerating circuit for a memory unit |
| 03/07/1989 | US4811120 Information signal recording and/or reproducing apparatus |
| 03/01/1989 | EP0305049A1 Apparatus for detecting whether information is recorded on a storage device |
| 02/28/1989 | US4809248 Memory device including a rotating disk and means for detecting change in frictional resistance between the disk and a read/record head |
| 02/28/1989 | US4809119 Circuit arrangement for the determination of the constant speed rotation of a disklike record medium |
| 02/28/1989 | US4809094 Method of accessing data recorded on a disk at a high speed |
| 02/28/1989 | US4808992 Component audio/video system with automatic turn-off of peripheral devices |
| 02/23/1989 | WO1989001573A1 Hydrodynamic bearing and a method for introducing lubricant into the bearing |
| 02/22/1989 | EP0304298A2 Magnetic head drive circuit |
| 02/22/1989 | EP0303700A1 Optical disk |
| 02/21/1989 | US4807210 Optical information processing apparatus |
| 02/21/1989 | US4807208 Compact-disk changer |
| 02/21/1989 | US4807204 Magneto-optical recording medium having pairs of mutually corresponding recording segments, and apparatus for recording information on the medium |
| 02/21/1989 | US4807072 Head position control mechanism for a magnetic disk apparatus with head locking |
| 02/21/1989 | US4807071 Mechanism for preventing damage to the magnetic head and medium of a magnetic recording/reproducing apparatus during transport |
| 02/21/1989 | US4807062 Multiple force retract circuit for a magnetic disk drive |
| 02/15/1989 | EP0303377A1 Method of recording position information of last track recorded with data in directory area |
| 02/14/1989 | US4805036 Synchronization of plural video reproducing systems |
| 02/08/1989 | EP0302680A2 An apparatus for recording and reproducing information on and from an optical disk |
| 02/08/1989 | EP0302666A2 Optical information processing apparatus provided with means for holding an optical system in a predetermined position when abnormality occurs to tracking or focusing control |
| 02/08/1989 | EP0302561A2 Suction holding device to hold a disc-like information carrier during reproduction |
| 02/08/1989 | EP0302507A2 Optical card recording/playing back apparatus |
| 02/08/1989 | EP0302138A1 Method of locating on a record disc a track, containing information, selected as target |
| 02/07/1989 | US4803576 Disc driving device |
| 02/07/1989 | US4803572 Recording/reproducing method and apparatus of magnetic disk unit in which playback commences before the magnetic head is completely centered on the track |
| 02/07/1989 | US4803571 Floppy disc magnetic head apparatus compatible with both horizontal and perpendicular recording media |
| 02/07/1989 | US4803568 Motor control apparatus effecting phase control on rotating body |
| 02/02/1989 | DE3822388A1 Plattenfoermiges aufzeichnungsmedium mit festwertspeicher-spuren, beschreibbaren bereichen und mit antriebseinrichtung Plattenfoermiges recording medium with a fixed value memory-traces, writable areas and with power supply device |
| 02/01/1989 | EP0301809A1 Video disc players |