| 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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| 07/13/1982 | US4339814 Spindle assembly for a video recorder-playback machine |
| 07/13/1982 | US4339778 Dual floppy disc machine |
| 07/06/1982 | US4338683 Videodisc player with constant turntable velocity |
| 07/06/1982 | US4338682 Tracking servo system of video disc player |
| 07/06/1982 | US4338642 Drive belt release mechanism for magnetic disk drives |
| 07/06/1982 | CA1127234A1 Motor speed control circuit |
| 06/30/1982 | EP0055089A1 Improvements in or relating to disc record players |
| 06/29/1982 | US4337533 Front loading type record player |
| 06/29/1982 | US4337532 System for controlling the change of read side for an optical reader for an information carrier |
| 06/29/1982 | US4337491 Brushless D.C. motor assembly |
| 06/23/1982 | EP0054438A1 Optical disk having an index mark |
| 06/10/1982 | EP0046793A4 Information storage apparatus. |
| 06/09/1982 | EP0053475A2 Record playing apparatus |
| 05/27/1982 | WO1982001784A1 Time reversal imaging apparatus for displaying x-ray images or the like |
| 05/26/1982 | EP0052454A2 Recording and/or reproducing equipment including a recording member |
| 05/25/1982 | US4332025 Disc clamping device |
| 05/25/1982 | US4331989 Magnetic disc file having dual lock mechanism |
| 05/25/1982 | CA1124395A1 Digital method and apparatus for rotating an information storage disk |
| 05/25/1982 | CA1124394A1 Variable angular velocity disc drive system for constant rate of information recovery |
| 05/12/1982 | EP0051429A1 Optical memory device and system |
| 05/11/1982 | US4329604 Low loss brushless DC motor |
| 05/11/1982 | US4329575 Video disc having a label for identifying material recorded thereon |
| 05/04/1982 | US4328575 Disc player having turntable height varying apparatus |
| 05/04/1982 | CA1123097A2 Error cancelling sync-off-tach tape drive system |
| 05/04/1982 | CA1123048A1 Apparatus for controlling the speed and direction of a dc motor |
| 04/28/1982 | EP0050368A1 Spindle assembly for a video recorder-playback machine |
| 04/27/1982 | US4327434 Video disc stylus position sensor system |
| 04/21/1982 | EP0049947A1 Motor control system |
| 04/20/1982 | US4326284 Video disc player having turntable assist apparatus |
| 04/20/1982 | CA1122319A1 Cross band coupling for stepper motor driven rigid magnetic disc |
| 04/20/1982 | CA1122035A1 Stroboscope device on a record player |
| 04/13/1982 | US4325133 Disc player apparatus |
| 04/07/1982 | EP0049136A2 Rotational speed controlling apparatus for recording disc |
| 04/06/1982 | US4323941 Integrated magnetic transducer |
| 04/06/1982 | CA1121510A1 Variable reluctance stepper motor drive and method of operation as a dc brushless motor |
| 03/23/1982 | CA1120586A1 Recording system |
| 03/16/1982 | US4320494 Switch device for a turntable |
| 03/10/1982 | EP0046793A1 Information storage apparatus. |
| 03/02/1982 | US4318144 Flexible magnetic disk recording apparatus |
| 02/23/1982 | US4317190 Pickup arm movement control system for record player |
| 02/16/1982 | US4316278 System for reading or recording indicia on a flexible disc |
| 02/16/1982 | US4316143 Speed deviation detector for servo controlled disc mastering turntable |
| 02/04/1982 | WO1982000383A1 Turntable system with low aggregate resonance |
| 02/02/1982 | US4314292 Magnetic recording or reproducing apparatus |
| 01/26/1982 | US4313191 Recording medium having a pilot signal with an aligned phase angle in adjacent tracks |
| 01/26/1982 | US4313189 Stylus position sensor for video disc player apparatus |
| 01/05/1982 | CA1115838A1 Information storage and retrieval system |
| 12/15/1981 | US4306259 Flexible-disc drive spindle assembly with brushless DC motor |
| 12/09/1981 | EP0041072A1 Rubber sheet for turntable |
| 12/08/1981 | US4305104 Information storage position control apparatus |
| 12/08/1981 | US4305101 Method and apparatus for selectively recording a broadcast |
| 12/08/1981 | US4304060 Phonograph actuated elements |
| 12/02/1981 | EP0040880A1 Apparatus for reproducing information stored in discs |
| 11/24/1981 | US4302833 Automatic record size detector |
| 11/24/1981 | US4302832 Radial-tracking programmable record player with record handling door mechanism |
| 11/17/1981 | US4301529 Drive control mechanism for a phonograph |
| 11/17/1981 | US4301486 System for recording information on a flexible information storage media |
| 11/03/1981 | CA1111964A1 Video disc player |
| 11/03/1981 | CA1111906A1 Motor control system |
| 10/27/1981 | US4297736 Device for adjusting and fixing detecting means relative to the index mark on a recording disc |
| 10/20/1981 | CA1111133A1 Control system for disk drive |
| 10/20/1981 | CA1110977A1 Phonograph turntable |
| 10/13/1981 | CA1110763A1 Video disc player |
| 10/13/1981 | CA1110762A1 Rotational speed indicating apparatus |
| 09/29/1981 | US4291886 Automatic record changer |
| 09/23/1981 | EP0036222A2 Focus servo system and focussing method |
| 09/22/1981 | US4291346 Optoelectronic system for determining the position of a magnetic head transducer on a flexible magnetic recording disc |
| 09/16/1981 | EP0035803A2 Disc spindle servo system |
| 09/09/1981 | EP0035289A2 Optical tracking system |
| 09/09/1981 | EP0035288A2 Optical tracking method and system |
| 09/09/1981 | EP0035287A2 Signal correction system and method |
| 09/08/1981 | US4288825 Magnetic card handling apparatus |
| 09/03/1981 | WO1981002492A1 Information storage apparatus |
| 09/01/1981 | US4286789 Simplified record player |
| 08/26/1981 | EP0034380A1 Improvements relating to drive motor mountings for record players |
| 08/25/1981 | US4286282 Periodically biased video disc player servo system |
| 08/25/1981 | US4286281 Video format signal recording and reproducing device |
| 08/18/1981 | US4285018 Disk file |
| 08/18/1981 | US4285016 Disc, tape and hybrid disc-tape memory apparatus and drive assembly |
| 08/11/1981 | US4283671 Automatic residual phase error compensation circuit for a digital servo control system |
| 07/22/1981 | EP0032269A1 Record player |
| 07/21/1981 | US4279423 Phonograph decoupling apparatus |
| 07/14/1981 | US4278923 Apparatus for maintaining a rotating member at a constant speed |
| 07/14/1981 | US4278846 Video disc locked groove clearance system |
| 07/09/1981 | WO1981001907A1 Indicator device for cassettes loaded with magnetical information carrier |
| 06/23/1981 | US4275426 Floppy disc drive |
| 06/09/1981 | US4272795 Information storage system and recording cartridge having precise alignment features |
| 05/28/1981 | WO1981001481A1 Rubber sheet for turntable |
| 05/19/1981 | US4268905 Autonomous fault diagnosis for disk drive using an internal microprocessor |
| 05/12/1981 | CA1100886A1 Phonograph actuated elements |
| 05/12/1981 | CA1100885A1 Record player with direct drive turntable |
| 05/06/1981 | EP0028177A1 Integrated magnetic transducer |
| 05/05/1981 | CA1100413A1 Automatic record player |
| 04/28/1981 | CA1100233A1 Scanning light beam of changing size |
| 04/07/1981 | US4260163 Phonographic source |
| 04/01/1981 | EP0026152A1 Front loading type record player |
| 03/31/1981 | US4258838 Automatic phonograph bonus award system |
| 03/24/1981 | US4258299 Apparatus for controlling the speed and direction of rotation of a DC motor |
| 03/24/1981 | US4257614 Record players |
| 03/17/1981 | US4256312 Turn table device for record players |