| 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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| 11/01/1990 | WO1990013120A1 Cassette detector for cassette loading apparatuses |
| 10/31/1990 | CN1046633A Regulating circuit |
| 10/30/1990 | US4967294 Magnetic recording/reproducing device which discriminates recorded and unrecorded tracks |
| 10/25/1990 | WO1990013093A1 Improved magnetic disk drive apparatus and method |
| 10/25/1990 | CA2053264A1 Magnetic disk drive apparatus and method |
| 10/24/1990 | EP0393266A1 Improved spindle motor for a disc drive |
| 10/23/1990 | US4965691 Sealed removable cartridge for use with a high density disc drive with magnetic clutch |
| 10/23/1990 | US4965686 Disc drive assembly for magnetic disc memory unit |
| 10/23/1990 | US4965685 Removable cartridge disc drive with radial arm voice coil actuator |
| 10/23/1990 | US4965682 Speed control device |
| 10/23/1990 | US4965476 Stabilized disk drive spin motor |
| 10/23/1990 | CA1275502C2 Still image recording and/or reproducing apparatus |
| 10/17/1990 | EP0392532A2 Card reader/writer of manual scanning type |
| 10/17/1990 | EP0392500A2 Spindle motor |
| 10/17/1990 | EP0392020A1 Magnetooptical recording apparatus |
| 10/16/1990 | US4964109 Fast speed reproduction system for digital disc |
| 10/10/1990 | EP0391627A2 Speed detection apparatus, speed control motor, and track jump control circuit |
| 10/10/1990 | EP0391588A2 Disc cartridge |
| 10/10/1990 | EP0391465A1 Device having a standard-size loading aperture |
| 10/10/1990 | EP0391424A2 Disk reproducing apparatus |
| 10/09/1990 | US4962494 Optical disk playback device having automatic volume control |
| 10/03/1990 | EP0390041A2 Remote-control apparatus for electronics apparatus |
| 10/03/1990 | EP0389689A1 Method for transmitting a transmission signal and a transmitting device and a receiving device for use in the method |
| 10/03/1990 | CN1009872B Information reproducing and recording system |
| 10/02/1990 | CA1274914A1 Record and/or playback device |
| 10/02/1990 | CA1274911A1 Still image recording and/or reproducing apparatus |
| 09/26/1990 | EP0389261A2 Compact-type device for reproducing data |
| 09/26/1990 | EP0389161A2 Passive payload for a cartridge handling system |
| 09/26/1990 | EP0389159A2 Mechanical sense of touch in a control system |
| 09/26/1990 | EP0388551A2 Method for setting the loop gain in a focusing servo loop |
| 09/26/1990 | EP0388452A1 Connectorless hermetic optical disk system |
| 09/26/1990 | EP0220251B1 Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support |
| 09/25/1990 | US4959740 Disc recording and/or reproducing apparatus including means for minimizing the effects of temperature changes |
| 09/25/1990 | US4959733 Motor rotation control apparatus with motor rotational frequency memory |
| 09/20/1990 | WO1990006579A3 Improved disc unit |
| 09/19/1990 | EP0387879A2 Optical videodisk player |
| 09/18/1990 | US4958339 Optical card with increased data storage capacity and recording/reproducing apparatus therefor |
| 09/18/1990 | US4958314 Information recording/reproducing apparatus |
| 09/12/1990 | EP0386914A1 Disc player |
| 09/12/1990 | EP0386913A1 Disc player |
| 09/12/1990 | EP0386705A1 Optical card processing apparatus |
| 09/12/1990 | EP0386371A2 Disk drive spindle motor |
| 09/12/1990 | EP0153410B1 Apparatus for recording and reproducing signal |
| 09/11/1990 | USRE33328 Write protect control circuit for computer hard disc systems |
| 09/11/1990 | US4956832 Tracking-deviation detector apparatus capable of preventing overwriting of data on an adjacent track |
| 09/11/1990 | US4956570 Pilot circuit with integrated circuit with preset firing delay for MOS power transistors |
| 09/06/1990 | DE4006584A1 Doppeleinlegesperre fuer einen plattenspieler Double lock insert for a phonograph |
| 09/05/1990 | EP0385696A1 Disk drive with an actuator locking system |
| 09/05/1990 | EP0385498A2 Recording and reproducing apparatus for optical disk |
| 09/04/1990 | US4954909 Data memorizing device which determines the movement of the recording head |
| 08/29/1990 | EP0384762A2 Wet rigid disk drive assembly with a conical spindle bearing |
| 08/29/1990 | EP0384073A2 Disc playing apparatus |
| 08/28/1990 | US4953151 Apparatus for detecting whether information is recorded on a storage device |
| 08/28/1990 | US4953150 Optical recording apparatus having improved erasing capability |
| 08/28/1990 | US4953043 Magnetic recording or reproducing apparatus with erasing capability |
| 08/28/1990 | US4952786 Information recording and reproducing apparatus having switching means for disabling control of medium drive by a phase locked loop in a playback mode |
| 08/22/1990 | EP0383562A1 Optical information recording and/or reproducing apparatus with device for prohibiting movement of optical head |
| 08/22/1990 | EP0383551A1 Disk drive with actuator returning and holding device |
| 08/22/1990 | EP0383454A2 Method and apparatus for preventing parasitic electrical discharges in magnetic disk drives |
| 08/22/1990 | EP0383451A1 Optical disc recording and reproducing apparatus |
| 08/22/1990 | EP0383299A2 Optical disk recording/reproducing apparatus and its disk rotary driving apparatus |
| 08/21/1990 | US4951276 Recording apparatus with switch actuated memory storage of recording medium removal or loading and backup power supply for memory |
| 08/21/1990 | US4950877 Apparatus for transporting card-like information recording medium |
| 08/21/1990 | US4950876 Optical card recording/reproducing apparatus with compensation for displacement deviation between data area of optical card and laser beam |
| 08/16/1990 | EP0382192A1 Scanning tunneling microscope memory apparatus |
| 08/15/1990 | CA2001392A1 Method and apparatus for preventing parasitic electrical discharges in magnetic disk drives |
| 08/14/1990 | US4949328 Disk player for playing both sides of a disk or multiple disks without ejection thereof and a disk player with a disk being played that overlaps disks stored in a storage receptor |
| 08/14/1990 | US4949323 Disk reproduction apparatus and method for high speed accessing of desired information data by checking address data |
| 08/14/1990 | US4949322 Random-play control system in disk player |
| 08/14/1990 | US4949201 Disk drive head position controller with static bias compensation and plural velocity detectors |
| 08/14/1990 | US4949199 Magnetic recording/reproduction apparatus |
| 08/14/1990 | US4949000 D.C. motor |
| 08/14/1990 | CA1272803A1 Apparatus for reading information from a record carrier |
| 08/09/1990 | WO1990009051A1 Under-the-hub disk drive spin motor |
| 08/08/1990 | EP0381368A2 Rigid disk drive with secured shaft |
| 08/08/1990 | EP0381158A2 Memory device |
| 08/08/1990 | EP0380746A2 Recording medium playing apparatus |
| 08/08/1990 | EP0380708A1 Overwrite type magnetooptical recording apparatus |
| 08/07/1990 | US4947280 Rotary magnetic reproducing apparatus with disc sensing logic |
| 08/07/1990 | US4947273 Autoloading, interchangeable-media, disk-drive apparatus |
| 08/01/1990 | EP0380256A1 Disc drive safety latch using shape memory metals |
| 07/31/1990 | US4945441 Zero-cross point detecting circuit |
| 07/31/1990 | US4945435 Noninfluencing fastener for disk drives |
| 07/26/1990 | DE4001355A1 Control system for brushless DC motor for magnetic disc - has magnet poles and coils which have number of phases with current applied at one of phases for each specified time |
| 07/25/1990 | EP0379444A2 Audio after recording apparatus |
| 07/24/1990 | US4944037 Optical system for recording information in erasable and non-erasable modes |
| 07/24/1990 | US4943907 Speed controller for recording and playback apparatus |
| 07/24/1990 | US4943748 Motor with cup-shaped rotor having cylindrical portions of different diameter |
| 07/23/1990 | CA2008231A1 Disc drive safety latch using shape memory metals |
| 07/20/1990 | CA2007362A1 Audio after recording apparatus |
| 07/18/1990 | EP0378222A1 Magnetic recording medium and method of magnetically recording and reading data |
| 07/17/1990 | US4942486 Recording disk having read-only recording area and writable recording area and a driving apparatus therefor |
| 07/17/1990 | US4942484 Floppy disk drive with closed loop servoed high density read/write gap, and with low density read/write gap for the write updating of standard open loop formatted medium |
| 07/11/1990 | EP0377340A2 Recording/reproducing device |
| 07/10/1990 | US4941140 Optical disc player |
| 07/10/1990 | US4941139 Checking media operations and recording during optical recording |
| 07/03/1990 | US4939601 Playback apparatus having a single mode selecting pushbutton |
| 07/03/1990 | US4939600 Efficient head positioner power amplifier |
| 07/03/1990 | CA1271258A1 Device for determining a centring error of a round track-shaped information structure in an optical record carrier relative to the axis of rotation of a turntable supporting the record carrier, apparatus provided with such a device, and record carrier... |
| 06/27/1990 | EP0374235A1 Phase-control circuit. |