| Patents for G11B 11 - Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups or by different subgroups of group; Record carriers therefor (14,351) |
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| 10/11/1994 | US5355353 Data recording system of magneto-optic type |
| 10/11/1994 | US5355257 Overload detection in an arrangement for recording an analog signal on a record carrier |
| 10/05/1994 | EP0618582A2 Information processing apparatus |
| 10/05/1994 | EP0618572A2 Magnetooptical recording medium on which high-density information can be recorded and method of reproducing the recorded information |
| 10/05/1994 | EP0618569A1 Focusing servo system and focus servo acquisition enable method |
| 10/04/1994 | US5353278 Magneto-optical disk and method of manufacturing the same |
| 10/04/1994 | US5353274 Beam diameter expansion of a multi-beam optical information system |
| 10/04/1994 | US5353268 Thermomagnetic recording system employing a medium having high storage density and direct-overwrite capability as a result of along-track isocoercivity |
| 10/04/1994 | US5353267 Magneto-optical light detector apparatus |
| 10/04/1994 | US5353266 Magnetooptical recording method |
| 10/04/1994 | US5353265 Magneto optical overwriting methods using a single optical head designed for a two-beam overwrite |
| 10/04/1994 | US5353175 Apparatus for using window signal generators to enable detection of header information such as an address mark, sector mark, or address information recorded on each sector of a disc recording medium only where such information could be present |
| 10/04/1994 | US5353171 Magneto-optical recording apparatus |
| 09/29/1994 | WO1994022139A1 Magnetooptic recording method, magnetooptic recording medium and magentooptic recording apparatus |
| 09/28/1994 | EP0616718A1 Optical scanning device. |
| 09/27/1994 | US5351229 Tribo-attractive contact slider for an optical read/write system |
| 09/27/1994 | US5351221 Apparatus for applying bias magnetic field including a rotatable magnet and a plurality of coils for controlling the rotation of the magnet |
| 09/27/1994 | US5351155 Magnetic head driving device with pre-recording energization with two inductors sharing a common magnetic core |
| 09/27/1994 | US5350917 Opto-magnetic recording polarization optical apparatus including a laser diode and a light absorbing film |
| 09/21/1994 | EP0616323A2 Digital recording and/or reproducing apparatus |
| 09/21/1994 | EP0616322A2 Disk apparatus and disk driving device |
| 09/20/1994 | US5349576 Apparatus and method for polarization switching of a readout beam in a magneto-optic storage system |
| 09/20/1994 | CA2013385C Optical/magnetic composite head having magnetic and optical heads in one integrated unit |
| 09/14/1994 | EP0615242A2 Apparatus for and method of recording signals onto a disk medium |
| 09/14/1994 | EP0615241A2 Apparatus for recording and reproducing signals onto and from a disk medium |
| 09/14/1994 | EP0615232A1 Optical recording and reading device |
| 09/13/1994 | US5347506 Optical disk player including a plurality of independent pick-ups |
| 09/13/1994 | US5347505 Optical medium recording method and apparatus employing pulse width delay and/or advancement |
| 09/13/1994 | US5347297 Apparatus and method for optimizing performance in an optical storage system read/write head |
| 09/13/1994 | US5347207 Disc shaped recording medium having a zero track address and multibit opposite polarity track addresses and an address discrimination circuit for reading such recording medium |
| 09/13/1994 | US5346789 Oriented biological material for optical information storage and processing |
| 09/07/1994 | EP0614177A2 Information recording and reproducing apparatus using probe |
| 09/07/1994 | EP0613579A1 Small size constant torque voice coil motor |
| 09/07/1994 | EP0276326B1 Optical disc recording/reproducing apparatus |
| 09/06/1994 | US5345435 Optical disc and method for recording on optical disc |
| 09/06/1994 | US5345434 Method and apparatus for correcting edge interval of record signal in an optical record/read-out apparatus |
| 09/06/1994 | US5345431 Write and erase assembly for magneto-optic drive apparatus |
| 09/06/1994 | CA2032866C Dielectric layer for magneto-optic storage media structures |
| 09/01/1994 | WO1994019802A1 Disk recording apparatus |
| 09/01/1994 | WO1994019800A1 Optical disc apparatus |
| 09/01/1994 | DE4405850A1 Magneto-optical recording medium |
| 08/31/1994 | EP0613144A2 Recording medium, recording apparatus and reproducing apparatus therefor |
| 08/31/1994 | EP0613135A2 Optical disc system |
| 08/31/1994 | EP0613127A1 Double-sided optical media for a disk storage drive |
| 08/30/1994 | USRE34710 Magneto-optical recording apparatus |
| 08/30/1994 | US5343460 Information processing device and information processing method |
| 08/30/1994 | US5343452 Data recording/reproducing apparatus of simultaneously performing both reproducing and recording from and in a single recording medium |
| 08/30/1994 | US5343449 Over-write capable magnetooptical recording medium having reading layer |
| 08/30/1994 | US5343448 External magnetic field device for a magnetooptical information recording and reproducing apparatus |
| 08/30/1994 | US5343447 Self-cooling optomagnetic disk device with locking internal mechanism |
| 08/30/1994 | US5342682 Method of molding optical recording drums |
| 08/24/1994 | EP0612069A2 Magneto-optical disc |
| 08/24/1994 | EP0612068A2 Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein |
| 08/24/1994 | EP0612067A2 Optical disc recording apparatus |
| 08/24/1994 | EP0612066A1 A magneto-optical disk and a playback method thereof |
| 08/24/1994 | EP0392020B1 Magnetooptical recording apparatus |
| 08/24/1994 | EP0232134B1 Optical disc and disc drive apparatus for writing/reading data into/from the disc |
| 08/24/1994 | CN1091223A Data destruction preventing method, recording apparatus provided with data destruction preventing capability, and disc recorded with guard band |
| 08/23/1994 | US5341362 Optical memory device having guide tracks shaped for increasing the quality of information signals |
| 08/23/1994 | US5341360 Method and apparatus for calibrating laser write power by averaging upper and lower knees of a calibration profile |
| 08/23/1994 | US5341359 Abnormality detection of a recording medium in a magneto-optical recording system |
| 08/23/1994 | US5341357 Optical disc recording apparatus |
| 08/23/1994 | US5341349 Magnetooptical recording medium having improved sensitivity |
| 08/23/1994 | US5340647 Improved reflection, sensitivity |
| 08/23/1994 | CA2027024C Magnetic head for magneto-optical recording and magneto-optical recording head |
| 08/18/1994 | DE4404635A1 Floating optical scanning head, which is integrally formed with a light source and a photodetector, and optical disc (disk) device having such a scanning head |
| 08/17/1994 | EP0611202A1 Magnetooptical reproducing head and apparatus for reproducing magnetically recorded data from multiple tracks |
| 08/17/1994 | EP0611155A2 Recording and/or reproducing apparatus for disc-shaped recording medium |
| 08/17/1994 | EP0611120A2 Overwrite capable magnetooptical recording method |
| 08/17/1994 | EP0610816A2 Rigid foil based on cyclo-olefin copolymer |
| 08/16/1994 | US5339298 Over-write capable magnetooptical recording method with widened power margin, and magnetooptical recording apparatus used in this method |
| 08/16/1994 | US5338331 Low-permeability high-strength target material for the formation of thin magnetooptical recording films |
| 08/10/1994 | EP0609617A2 Recording and reproducing apparatus |
| 08/10/1994 | EP0609398A1 Method and device for recording-reading information on a moving optical or magneto-optical medium |
| 08/09/1994 | US5337305 Information storage system |
| 08/09/1994 | US5337303 Disk storage device having light receiving device located at improved position |
| 08/09/1994 | US5337300 Signal sensing device of magneto-optic disk device for detecting error signal and information record signals with common photo sensor |
| 08/09/1994 | US5337293 Magneto-optical recording method and recording medium for use in the same |
| 08/09/1994 | US5337197 Method and system for maintaining directory consistency in magneto-optic media |
| 08/09/1994 | US5336531 Magneto-optical disk and manufacturing methods thereof |
| 08/04/1994 | WO1994017524A1 Optical data storage and retrieval system and method |
| 08/03/1994 | EP0609024A2 Disc recording and/or reproducing apparatus |
| 08/03/1994 | EP0609013A2 Recording and reproducing apparatus |
| 08/03/1994 | EP0608842A1 Optical pick-up device |
| 08/03/1994 | EP0608643A2 Magneto-optical recording medium and method for reproducing from the magneto-optical recording medium |
| 08/03/1994 | EP0608432A1 Polarizing element and optical element, and optical head |
| 08/03/1994 | CN1090420A Information recording medium, equipment and reader and recording method |
| 08/03/1994 | CN1090415A Method and recordeing device for recording signals on a record carrier |
| 08/03/1994 | CN1090413A Method and system for reading record medium |
| 08/02/1994 | US5335220 Optical recording element and driving system |
| 08/02/1994 | US5335213 Positional detection of a magneto-optic recording medium for controlling irradiation of a relief region |
| 08/02/1994 | US5335197 Storage medium, storage method and stored information reading method |
| 08/02/1994 | US5334849 Apparatus for and method of verifying etching of optical servo information on magnetic media |
| 08/02/1994 | CA2011913C Recording-reproducing apparatus, and recording-reproducing method |
| 07/27/1994 | EP0608134A2 Magneto-optical recording medium |
| 07/27/1994 | EP0608126A2 Information recording medium and method of fabricating same |
| 07/26/1994 | US5333167 Mask structure for x-ray exposure and x-ray exposure device and method using it |
| 07/26/1994 | US5333124 Magnetic optical disk player having improved servoresponse sensitivity |
| 07/26/1994 | CA2036759C Magnetooptic device and its driving method |
| 07/22/1994 | CA2113842A1 Recording and reproducing apparatus |