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)
11/1985
11/05/1985US4551661 Driving apparatus for a recording medium
10/1985
10/29/1985US4550347 Method for recording information on a recording disc
10/16/1985EP0158067A1 Optical disc device
10/15/1985US4547820 Floppy disk drive apparatus
10/09/1985EP0156960A2 Disc, tape and hybrid disc-tape memory apparatus and drive assembly
10/08/1985US4546462 Optical data recording and reproducing apparatus
10/08/1985US4546461 Method for recording information on a recording disc
10/08/1985US4546397 Flexible magnetic disc cassette
10/08/1985US4546390 Combination still and motion picture electronic camera/recorder
10/08/1985CA1194996A1 Disc reproducing system for compensating mechanical imperfections
10/02/1985EP0155970A1 Apparatus for reproducing audio signal
10/01/1985US4544957 Time base correction apparatus
10/01/1985CA1194427A1 Device for loading and ejecting a disc in a disc player
09/1985
09/26/1985WO1985004277A1 Magnetic recording/reproducing apparatus
09/24/1985US4543650 Servo system including velocity and phase servo circuits for digital audio record disc reproducing apparatus
09/24/1985US4543621 Spiral track disk drive
09/17/1985US4542429 Apparatus for reducing starting adhesion between a magnetic disc and flying head
09/17/1985US4542423 Rotation control device for information recording disc
09/17/1985US4542388 Light or heat output stabilizing system
09/11/1985EP0154389A1 Optical recording apparatus
09/11/1985EP0154005A2 Twin track vertical read-write head structure
09/04/1985EP0153410A1 Apparatus for recording and reproducing signal
09/03/1985US4539711 Tuning control system for a pair of tuners employing a common channel skip memory
09/03/1985US4539670 Automatic disc loading apparatus
09/03/1985US4539668 Device for loading and ejecting a disc in a disc player
09/03/1985US4539667 Disc players
09/03/1985US4539666 Apparatus for controlling rotation of a record disk at a constant linear velocity
09/03/1985US4539612 Spindle bearing assembly for disk drive unit
09/03/1985US4539611 Drive motor for shallow disk drive assembly
08/1985
08/21/1985EP0152245A2 Optical disk control apparatus
08/21/1985EP0152071A2 Data transfer apparatus with a disklike record medium, and a method of operation therefor
08/21/1985EP0152070A2 Data transfer apparatus with a disklike record medium, and a method of operation therefor
08/20/1985US4536865 Bookshelf type record player
08/20/1985US4536864 Apparatus for reading an optically coded disc-shaped record carrier
08/20/1985US4536812 Magnetic disk cartridge
08/20/1985CA1192305A1 Servo system including velocity and phase servo circuits for digital audio record disc reproducing apparatus
08/20/1985CA1192304A1 Flexible disc recording and/or reproducing apparatus
08/15/1985WO1985003593A1 Storage device for a disk stack of a magnetic disk memory
08/14/1985EP0151260A1 Magnetic disc memory comprising a stack of discs with double sided bearing within a partially resilient casing
08/13/1985US4535438 Turntable platter for record players
08/13/1985US4535434 Optical disc and disc drive mechanism
08/13/1985US4535373 Labyrinth seal in disk storage drive
08/06/1985US4533965 Magnetic read/write circuit
08/06/1985CA1191559A1 Circuit for detecting existance of information signal
07/1985
07/30/1985US4532621 Device and method for recording information on a disk
07/30/1985US4532561 Playback speed control system
07/30/1985US4531846 Compact ferrofluid seal and bearing assembly
07/16/1985US4530083 Rotatable memory disk apparatus
07/16/1985US4530018 Information recording/reproducing apparatus with disk having sections of different angular velocity
07/09/1985US4528653 Record player with automatic music search function
07/09/1985CA1190319A1 Flexible magnetic disk cassette and a recording and/or reproducing apparatus for the same
07/04/1985WO1985002934A1 Method and apparatus for delivering messages
07/02/1985US4527273 Information processing system
07/02/1985US4527265 Position memory for laser reproduction unit
07/02/1985US4526484 Ferrofluid thrust and radial bearing assembly
07/02/1985US4526382 Radially polarized multiple-stage ferrofluid seal apparatus
07/02/1985US4526379 Stabilized ferrofluid-ferrofluid seal apparatus and method
06/1985
06/25/1985US4525752 Apparatus for recording and reproducing a digital signal
06/19/1985EP0144813A1 Recording and reproducing apparatus
06/18/1985US4524399 Magnetic disk memory power supply
06/18/1985US4524269 Card operation indicator for magnetic card drive devices
06/18/1985US4524109 Thin coating of polyisobutylene
06/11/1985US4523243 Magnetoresistive transducer using an independent recessed electromagnetic bias
06/06/1985WO1985002484A1 A disc type information storage and rerieval system
06/06/1985WO1985002481A1 Disk-shaped recording medium and apparatus for reproducing the same
06/05/1985EP0143474A1 Apparatus for reading an optically readable record carrier
06/04/1985US4521884 Method and apparatus for error data feedback in a diskette drive
06/04/1985US4521820 Insert for blocking operation of the disc write switch in use of computer diskettes
06/04/1985CA1188228A1 Turntable platter for record players
05/1985
05/21/1985US4519057 Digital audio disc player including apparatus for finding the beginning of a recorded audio signal
05/21/1985US4519056 Optical disk apparatus
05/21/1985CA1187607A1 Information carrier disk with angular coding means and a system for driving said disk in rotation
05/15/1985EP0141337A2 Apparatus for scanning sheet-shaped recording medium
05/08/1985EP0140193A1 Drive mechanism for fixed discs
05/08/1985EP0139779A1 Picture viewing and sound record/playback arrangement
05/08/1985EP0139778A1 Arrangement for viewing picture cards and for the co-ordinated recording/replay of sound information
05/07/1985US4516233 Disc record player having player control apparatus
05/07/1985US4516231 Optical disc system having momentum compensation
05/07/1985US4516177 Rotating rigid disk data storage device
05/07/1985US4516161 System for pausing reproduction in rotary recording medium reproducing apparatus
05/02/1985EP0139332A2 Apparatus for reproducing information from a disc-shaped optically readable record carrier
05/02/1985EP0139163A1 Multiple data transfer system having a plurality of disk drives
04/1985
04/30/1985US4514771 Method and apparatus for improving disk storage capacity
04/30/1985US4514732 Technique for increasing battery life in remote control transmitters
04/30/1985CA1186410A1 Video disc player having auxiliary vertical synchronizing generator
04/24/1985EP0138211A2 Disc rotation control device for a disc player
04/24/1985EP0137855A1 Data transfer system using digital disc
04/16/1985US4511930 Electro-optical information recording and reproduction system
04/09/1985US4510591 Slot type disc recorder and/or player apparatus
04/03/1985EP0135969A2 Optical disc player
04/02/1985US4509160 Disc drive assembly
04/02/1985CA1185012A1 Optical disc unit, fabrication method and cooperating write and/or read apparatus
04/02/1985CA1185011A1 Information signal reproducing apparatus
03/1985
03/28/1985WO1985001377A1 Apparatus for reproducing audio signal
03/26/1985US4507770 Control system for a disc player apparatus
03/26/1985US4506857 Adjustable mounting for a motor on a base
03/19/1985US4506304 Apparatus for transferring pre-recorded image signal information from one recording medium to a master recording medium
03/05/1985US4503473 For a floppy disc drive
02/1985
02/27/1985EP0133430A1 An improved brushless dc motor
02/26/1985US4502024 Pulse-width modulation circuit