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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02/09/1988 | US4724495 Digital formatter, controller, and head assembly for video disk recording system, and method |
02/09/1988 | US4724492 Recording disk data playback apparatus |
02/09/1988 | US4723648 High speed rotational supporting device |
02/09/1988 | CA1232681A1 Optical disk record player |
02/03/1988 | EP0255240A2 Magnetic disk device using metallic film disk as data recording medium |
02/02/1988 | US4723295 Recording disk data playback apparatus |
02/02/1988 | US4723235 System for playing back information recorded on a disk recording medium with an improved discrimination and playback start operation |
02/02/1988 | US4723234 Optical disc player |
02/02/1988 | US4723185 Recording and/or reproducing apparatus |
02/02/1988 | US4723181 Tape memory with integral disk index on reel |
02/02/1988 | US4723180 Intermittent drive type magnetic recording apparatus |
02/02/1988 | US4722505 Resilient mount with variable antivibration controls for record players |
01/27/1988 | EP0254328A2 Card accessing apparatus |
01/27/1988 | EP0254285A2 High density storage of information on a compact disc |
01/26/1988 | US4722078 Disc player |
01/26/1988 | US4722077 Transcription control over plural interconnected modules |
01/26/1988 | US4721850 Optical pickup device having a detector for detecting the light emitting intensity variation of a semiconductor light emitting element |
01/26/1988 | CA1232064A1 Disk drive |
01/20/1988 | EP0253626A2 Magnetic disc device |
01/20/1988 | EP0252984A1 Magnetic recording/regenerating apparatus |
01/20/1988 | CN87205568U Single recording and single playing multitrace radio cassette recorder |
01/13/1988 | EP0252445A1 Apparatus for optically recording and reproducing information in record tracks on a rotatable record disc |
01/12/1988 | US4719611 Apparatus for controlling a recording operation of an optical information recording apparatus |
01/12/1988 | US4719524 Signal reproduction apparatus including touched state pattern recognition speed control |
01/12/1988 | CA1231444A1 Flexible magnetic disk write protect device |
01/07/1988 | EP0251666A2 Apparatus for recording and reproducing information |
01/07/1988 | EP0251277A2 A recording/reproducing system for a magnetic recording medium |
01/07/1988 | EP0251210A1 A security system for protecting information |
01/05/1988 | US4718068 Stabilized laser device of optical information recording/reproduction apparatus |
01/05/1988 | US4718054 Servo error write blanking circuit for an optical recording disk |
01/05/1988 | US4717977 High capacity Winchester disk drive |
01/05/1988 | US4717976 Apparatus using disc-shaped record bearing medium |
01/05/1988 | US4717969 Apparatus for detecting servo-lock state in rotation of rotary recording medium |
01/05/1988 | US4717968 Video player with power-down capability |
01/05/1988 | US4717961 Electronic still camera preventing premature removal of recording disk |
12/29/1987 | US4716477 Mechanism for automatically loading a cassette in recording and/or reproducing apparatus including pinching means for applying varying pinching action |
12/23/1987 | EP0250236A1 Low viscosity, electrically conductive ferrofluid composition |
12/23/1987 | EP0249996A1 Optical recording and reproducing apparatus |
12/23/1987 | EP0249781A2 Compact disc (CD) player |
12/16/1987 | EP0249462A1 Recording disk reproducing apparatus |
12/16/1987 | EP0249458A2 Method of accessing data recorded on a disk at a high speed |
12/16/1987 | EP0249062A2 Disk drive actuator velocity limiting circuit |
12/15/1987 | US4713704 Disk storage spindle arrangement |
12/15/1987 | US4713703 Information recording and reproducing apparatus |
12/09/1987 | EP0248092A1 Method for monitoring the performance of the head-disc-interface and device for preventing data losses due to magnetic head-disc-interferences |
12/08/1987 | US4712208 Disc reproducing system for compensating mechanical imperfections |
12/08/1987 | US4712204 Optical disk and method for reproducing reference signal therefrom |
12/08/1987 | US4712203 Method and apparatus for thermo magnetic recording/erasing information with preselected magnetic field switching |
12/08/1987 | CA1230178A1 Disc playback apparatus |
12/03/1987 | DE3618236A1 Method and device for the electronic processing of stored video signals |
12/02/1987 | EP0247219A1 Direct access storage unit |
12/02/1987 | CN87103811A Optical disc player |
12/01/1987 | US4710827 Servo apparatus |
12/01/1987 | US4710825 Disc recording system with speed control |
11/25/1987 | EP0246830A2 Optical information recording and reproducing apparatus |
11/25/1987 | EP0246542A2 Optical disc player |
11/24/1987 | US4709282 Device for loading or unloading magnetic disc pack |
11/24/1987 | US4709279 Read/write amplifier power control device for a disk apparatus |
11/17/1987 | US4707818 Method and apparatus for recording digitized information on a disc |
11/17/1987 | US4707751 Supporting device of a shaft drive of a magnetic record and reproduction device |
11/17/1987 | US4707750 Automatic sequencer for a flexible disk loader/copier |
11/12/1987 | DE3715602A1 Disc drive |
11/10/1987 | US4706237 Disc player with strobe light illumination |
11/10/1987 | US4706233 Control system for record changer apparatus |
11/10/1987 | US4706138 Amplification of signals produced by a magnetic sensor |
11/10/1987 | US4706005 Control circuit of direct current servomotor for floppy disk drive |
11/10/1987 | CA1229173A1 Mass storage disk drive defective media handling |
11/10/1987 | CA1229165A1 Direct read after write |
11/04/1987 | EP0243973A2 Compact disk drive |
11/04/1987 | EP0243625A2 DC motor speed control |
10/29/1987 | DE3713321A1 Computer-plattenlaufwerksystem Computer disk drive system |
10/27/1987 | US4703379 Hard disk drive with erasing apparatus |
10/27/1987 | US4703374 Magnetic disk memory having a disk pack seated at both sides in resiliently-designed housing |
10/27/1987 | US4702101 Apparatus and method for testing the calibration of a hard disk substrate tester |
10/21/1987 | EP0242215A2 Apparatus for data recording disc playback |
10/21/1987 | EP0241770A1 A circuit for biasing a magnetoresistive sensor and amplifying signals produced thereby |
10/21/1987 | EP0241515A1 Transducer positioning mechanism |
10/20/1987 | US4701902 Automatic loading disc player |
10/20/1987 | US4701901 Disc player |
10/20/1987 | US4701898 Method and apparatus for locating a selected track on a record disc |
10/20/1987 | US4701896 Interactive plural head laser disc system |
10/20/1987 | US4701813 Method of protecting a magnetic recording medium in a magnetic recording/playback system and apparatus therefor |
10/20/1987 | US4701653 Disk drive with internal brake and static discharge |
10/20/1987 | CA1228421A1 Apparatus for reproducing information from a disc- shaped optically readable record carrier |
10/14/1987 | EP0241081A1 Compact disc drive apparatus specifically designed for storage of digital data and/or mixture of audio information and digital data |
10/14/1987 | EP0240678A2 Rotational velocity control with pulse width modulation |
10/13/1987 | US4700338 Automatic loading disc player |
10/13/1987 | US4700337 Control apparatus for a recording medium drive motor in a digital information reproducing apparatus |
10/13/1987 | US4700245 Drive pin for a data transfer apparatus with a disklike record medium |
10/13/1987 | US4700243 Power saving circuit arrangement for an apparatus for data transfer with flexible magnetic disk or the like |
10/13/1987 | US4700095 Construction for installing a stepping motor of a floppy disk drive unit |
10/06/1987 | US4698695 Recording disk data playback apparatus |
10/06/1987 | US4698542 Brushless direct current motor system |
09/30/1987 | EP0238755A1 Video signal recording apparatus |
09/23/1987 | EP0238194A2 Methods of and apparatus for recording signals on a disc-shaped recording medium |
09/23/1987 | EP0237991A2 Card guide device |
09/23/1987 | EP0237682A1 Control system for optical information reproducing apparatus |
09/22/1987 | US4695995 Front loading disk player with improved disk sensor positioning |
09/22/1987 | US4695993 Optical information recording and reproducing apparatus and optical disc |
09/16/1987 | EP0237117A2 Recording and/or reproducing apparatus |