| 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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| 03/11/1981 | EP0024858A2 Video record disc and playback apparatus and method for it |
| 03/03/1981 | US4254307 Sequential encoding and decoding apparatus for providing identification signals to a dictation recorder |
| 02/24/1981 | US4252353 Self-activating ferrofluid seals |
| 02/24/1981 | US4252326 Sound reproducing device |
| 02/11/1981 | EP0023845A1 Apparatus for recording a signal at constant relative tracing linear speed on a rotating recording medium |
| 02/03/1981 | US4247976 Method for production of a turntable with stroboscope marks |
| 01/27/1981 | US4247866 Nested loop video disc servo system |
| 01/27/1981 | US4247119 Record side identification apparatus for video disc player |
| 01/07/1981 | EP0021863A1 Digital process for checking the correct reproduction of a composite television signal and device for carrying out this process |
| 01/06/1981 | CA1093208A1 Apparatus for damping rotation of turntable |
| 12/30/1980 | US4242618 Speed controller for rotary machine |
| 12/16/1980 | US4239237 Turntable drive system for video disc player |
| 12/11/1980 | WO1980002770A1 Device for moving tone arm |
| 12/10/1980 | EP0020199A1 System for controlling the changing of the read side for the optical reader of an information carrier |
| 12/10/1980 | EP0020176A2 Disc, tape and hybrid disc-tape memory apparatus and drive assembly |
| 12/10/1980 | EP0019924A1 Method and apparatus for recording data signals on a recording medium |
| 11/25/1980 | US4236050 System for recovering information from a movable information storage medium having a pilot signal with an aligned phase angle in adjacent tracks |
| 11/18/1980 | US4234836 Phonograph turntable control system |
| 11/18/1980 | US4234195 Apparatuses for reproducing signals from rotary recording mediums |
| 11/12/1980 | EP0018791A1 Magnetic seal apparatus for magnetically permeable shaft |
| 10/29/1980 | EP0018156A1 Recording and replay apparatus employing rotary media |
| 10/15/1980 | EP0017004A1 Device for reducing vibrations in a record player |
| 10/14/1980 | US4228387 Variable reluctance stepper motor drive and method of operation as a DC brushless motor |
| 10/14/1980 | US4228326 System for recording information on a rotatable storage disc, in a substantially uniform recording density |
| 10/07/1980 | US4226425 Nonrecorded section detection in an automatic record |
| 09/30/1980 | US4225227 Multiple speed stroboscope device |
| 09/30/1980 | US4225142 Turntable system with low aggregate resonance |
| 09/30/1980 | CA1086860A1 Video player having safety devices actuated by unlatching |
| 09/17/1980 | EP0015764A1 Floppy disc drive assembly |
| 09/16/1980 | US4223359 Flexible magnetic disk recording apparatus |
| 09/16/1980 | US4223349 System for rotating an information storage disc at a variable angular velocity to recover information therefrom at a prescribed constant rate |
| 09/16/1980 | US4222574 Radial-tracking programmable record player |
| 08/20/1980 | EP0014231A1 Information storage apparatus |
| 08/12/1980 | US4216969 Carriage translating apparatus for video disc player |
| 08/06/1980 | EP0014058A1 Improvements relating to turntable mountings for record players |
| 08/06/1980 | EP0013903A1 Recording system using disk-shaped recording medium |
| 08/05/1980 | US4216512 Disc recorder with brushless DC motor drive |
| 07/09/1980 | EP0013024A1 Dictate station identifier |
| 07/08/1980 | US4211421 Video disc player having adjustable end-of-play switch |
| 07/08/1980 | CA1081360A1 Procedure for tightening tape wraps on a spindle |
| 06/24/1980 | US4209174 Shock starting type simplified phonograph |
| 06/17/1980 | CA1079538A1 Electronic tachometer with variable bandwidth differentiator |
| 06/10/1980 | US4206926 Video disc player having record size identification apparatus |
| 06/03/1980 | CA1078912A1 Illumination system |
| 05/28/1980 | EP0011495A1 Method and apparatus for rotating an information storage disc |
| 05/28/1980 | EP0011494A1 Method and apparatus for controllably rotating an information storage disc |
| 05/28/1980 | EP0011493A1 Method and apparatus for precisely controlling the angular velocity of an information storage disc |
| 05/28/1980 | EP0011068A1 Turntable for record playing deck |
| 05/27/1980 | US4205260 Motor control system |
| 05/27/1980 | CA1078511A1 Process for controlling the starting and stopping of the reading of a recording support |
| 05/27/1980 | CA1078303A1 Phonograph record player/changer |
| 05/15/1980 | WO1980001015A1 Magnetic reproducer |
| 05/13/1980 | US4203061 Rotational speed indicating apparatus |
| 05/13/1980 | US4202551 Acoustic dampening assembly for record player turntable |
| 05/13/1980 | CA1077621A1 Video disc player mechanism control system |
| 04/29/1980 | US4200344 Magnetic disc stores |
| 04/22/1980 | CA1076255A1 Lid interlock and turntable brake system |
| 04/15/1980 | US4198057 Simplified record player |
| 04/08/1980 | US4197489 Spindle drive system |
| 04/01/1980 | US4195846 Phonograph turntable control system |
| 04/01/1980 | US4195845 Turntable rotation controlling apparatus |
| 03/25/1980 | US4194743 Record player |
| 03/04/1980 | US4191382 Turntable rotation control device |
| 02/26/1980 | US4190870 Disk drive assembly |
| 02/26/1980 | US4190860 Digital method and apparatus for rotating an information storage disc |
| 02/26/1980 | US4190859 Tracking control apparatus for use in apparatus for reproducing video signals from a rotary recording medium |
| 02/19/1980 | CA1072209A1 End of play circuit |
| 02/19/1980 | CA1072208A1 Fixed head, direct access storage device |
| 02/12/1980 | US4188648 Data security apparatus for magnetic recording disc drive |
| 01/23/1980 | EP0007200A1 Method and apparatus for controlling the reading of information from an information storage medium |
| 01/23/1980 | EP0007199A1 Method and apparatus for information retrieval from an optically readable storage medium |
| 01/15/1980 | US4184114 Arrangement for indicating revolutional speed of a revolving body |
| 01/09/1980 | EP0006631A1 Disk storage apparatus |
| 01/08/1980 | CA1069442A1 Phonograph record player with repeat control |
| 01/01/1980 | CA1069211A Turntable speed lock system |
| 12/25/1979 | US4180802 Random autoplay |
| 12/25/1979 | CA1068614A Automatic control for phonographs playing records of different speeds |
| 12/18/1979 | CA1068220A1 Inertial phonograph device |
| 12/04/1979 | US4176847 Device for preventing slipping of turntable out of shaft |
| 11/27/1979 | US4176378 Signal pickup arm lifting/lowering and groove skipper apparatus |
| 10/03/1979 | EP0004476A1 Time base error correction for optical disc players |
| 10/02/1979 | CA1063727A1 Turntable speed control system |
| 09/11/1979 | CA1062367A1 Cassette tape recorders |
| 09/04/1979 | US4166621 Programmable record changer |
| 08/28/1979 | CA1061465A1 Video disc player |
| 08/14/1979 | US4164769 Cross band coupling for stepper-motor-driven, rigid magnetic disc |
| 08/14/1979 | US4164766 Disc memory apparatus magnetic head carriage manual control |
| 08/14/1979 | US4164756 Disc record groove skipper |
| 07/31/1979 | CA1059620A1 Apparatus for reading a disk-shaped record carrier to be placed on a turntable |
| 07/31/1979 | CA1059616A1 Servo system for video signal recording and reproducing apparatus |
| 07/24/1979 | US4162511 Velocity correction system for video disc player |
| 07/10/1979 | CA1058091A1 Record player with automatic record centering |
| 07/03/1979 | US4160197 Circuit arrangement for record players performing the setting back of the disc into a pre-determined start position |
| 06/05/1979 | US4157568 Method and apparatus for optically reproducing a rotatable record with a scanning light beam of changing size |
| 06/05/1979 | CA1056055A1 Storage system having a universal disk drive and a family of data modules |
| 05/08/1979 | US4153257 Record stamper playback turntable |
| 05/01/1979 | US4152584 Magnetic card reading apparatus with novel card forwarding means |
| 04/10/1979 | CA1052282A1 Turntable direct-drive system |
| 04/03/1979 | US4148077 Method of playing back video records through television receiver operating at a different line standard |
| 03/20/1979 | CA1051078A1 Direct drive for turntables |