| 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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| 09/22/1998 | CA2116497C Information recording and reproducing apparatus using probe |
| 09/22/1998 | CA2051192C Tracking method for memory apparatus |
| 09/16/1998 | EP0865035A2 Signal recording method, phase difference detecting circuit, and information storage apparatus |
| 09/16/1998 | EP0452884B1 A rewritable optical disc |
| 09/16/1998 | CN1193164A Optical data storage system of compensating trace error signal and degenerating noise of hard disc |
| 09/16/1998 | CN1193161A Light disc recording/reproducing apparatus and method thereof |
| 09/15/1998 | US5809005 Method for manufacturing a magneto-optical memory element |
| 09/15/1998 | US5809001 Bandwidth reduction in writeable optical data storage apparatus |
| 09/15/1998 | US5808994 Data reproduction apparatus |
| 09/15/1998 | US5808988 Reproduction of optical information by one-beam optics with reduced crosstalk as recorded in multi-phases and multi-levels at staggered lattice points, and apparatus and recording medium therefor |
| 09/15/1998 | US5808980 Seek actuator for optical recording |
| 09/15/1998 | US5808977 Tracking method and recording means thereby |
| 09/15/1998 | US5808973 Near field recording and reproducing apparatus |
| 09/15/1998 | US5808972 Stabilized overwriteable optical recording method using laser beam intensity settings |
| 09/15/1998 | US5807640 Optical recording medium, reproducing system, method of reproducing optical disk, method of fabricating optical disk original record, and method of stopping illegal program operation |
| 09/09/1998 | EP0863504A2 Magneto-optical memory medium and reproducing method thereof |
| 09/08/1998 | US5805744 Magneto-optical pickup device having phase compensating circuitry |
| 09/08/1998 | US5805565 Optical disk having wobbled information shared between tracks |
| 09/08/1998 | US5805564 Optical disk capable of detecting errors in address area and correcting errors in data area and recording method and apparatus therefor |
| 09/08/1998 | US5805558 Light signal detection circuit with dual light detecting means and arrangement thereof |
| 09/08/1998 | US5805552 Disc cartridge loading apparatus |
| 09/08/1998 | US5805551 Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
| 09/08/1998 | US5805550 Recording medium capable of recording a first data-type and a second data-type, playback method and playback device for playing back from the recording medium, and recording device for recording first-type data and second type data on the recording medium |
| 09/08/1998 | US5805546 Recording or reproducing apparatus having a spindle servo control linked to laser power control |
| 09/08/1998 | US5805539 Computer system for recording digital data onto a recording medium |
| 09/08/1998 | US5805536 Method for bandwidth reduction in writeable optical data storage apparatus |
| 09/08/1998 | US5805355 For use in a laser optical system |
| 09/08/1998 | US5804814 Optical pick-up head and integrated type optical unit for use in optical pick-up head |
| 09/08/1998 | US5804710 Atomic force microscope system with multi-directional voice coil actuator for controlling the stylus |
| 09/08/1998 | US5804520 Containing silicon oxide, lithium oxide and chlorine; microcrystalline structure |
| 09/02/1998 | EP0862171A2 Optical information recording apparatus, optical recording medium, and method for judging tracking polarity of optical recording medium |
| 09/02/1998 | EP0862169A1 Optical storage apparatus |
| 09/01/1998 | US5802174 Data recording medium |
| 09/01/1998 | US5802030 Information reproducing apparatus and method for reproducing information by using a multibeam spot |
| 09/01/1998 | US5802027 Reproduction clock phase correction circuit |
| 09/01/1998 | US5800950 Multilayer optical recording media with charge generating and charge transporting material for electrooptical effect |
| 08/27/1998 | DE19707052A1 Magneto=optical storage medium for binary information |
| 08/26/1998 | EP0860825A2 Information storage device having transducers operating in a pulse mode in synchronism with a clock |
| 08/26/1998 | EP0860818A2 Optical pickup integrated with optical system |
| 08/26/1998 | EP0860814A2 A cleaning device |
| 08/25/1998 | US5799212 Efficient recording medium |
| 08/25/1998 | US5798992 Laser diode monitoring apparatus for determining the decay of laser diode |
| 08/25/1998 | US5798987 Low noise magneto-optical disk drive |
| 08/20/1998 | WO1998036408A2 A magnetic structure urging an actuator assembly toward a home position |
| 08/19/1998 | EP0859359A1 Optical head apparatus |
| 08/19/1998 | CN1191036A Magneto-optical recording medium and method for recording and reproduction thereon |
| 08/19/1998 | CN1190776A Magnetic disk group with laser convex mark |
| 08/18/1998 | US5796712 Optical disk having identification signal recorded between and used in common for two mutually adjacent tracks and optical disk unit therefor |
| 08/18/1998 | US5796710 Information recording medium encoded to enable track following and method of recording |
| 08/18/1998 | US5796704 Optical disk apparatus and recording and reproducing method of optical recording medium |
| 08/18/1998 | US5796703 Apparatus for controlling an electrical current passed to a writing device in an optical storage system |
| 08/18/1998 | US5796701 Optical pickup and opto-magnetic signal reproducing apparatus |
| 08/18/1998 | US5796683 Magneto-optical recording device having a controllable polarizing filter |
| 08/18/1998 | US5796534 Apparatus which performs an ID operation simultaneously with a servo operation using a data recording medium with the ID area recorded immediately before the servo area |
| 08/18/1998 | US5796102 Measuring device for measuring the intensity and/or polarization of electromagnetic radiation, for determining physical properties of a preparation, and for reading information from a storage medium |
| 08/13/1998 | WO1998035347A1 Information recording/reproducing apparatus |
| 08/13/1998 | WO1998035346A1 Optical pickup device |
| 08/13/1998 | DE19803008A1 Optical disc with tracks and bridges for recording |
| 08/12/1998 | EP0858075A2 Memory control in recording and/or reproducing apparatus |
| 08/12/1998 | EP0808498B1 Overcoat for optical recording medium |
| 08/12/1998 | EP0645043B1 Apparatus for and method of verifying etching of optical servo information on magnetic media |
| 08/11/1998 | US5793743 Reading a magnetic storage medium with a probe that detects tunneling current induced in a magnetic layer by a non-ionizing light beam |
| 08/11/1998 | US5793741 Optical information recording medium |
| 08/11/1998 | US5793738 Optical disc |
| 08/11/1998 | US5793737 Method and apparatus for writing optical recording media with optimum value of write power |
| 08/11/1998 | US5793735 Wavefront aberration compensation in an optical data recording and reproducing apparatus with crystal liquid matrix |
| 08/11/1998 | US5793732 Optical apparatus having reflecting porton split by an edge |
| 08/11/1998 | US5793725 Optical information recording/reproducing apparatus having a composite prism with a plurality of emission surfaces |
| 08/11/1998 | US5793723 Method and a system for adjusting optical recording device involving an optical recording medium of non-uniform heat characteristics |
| 08/11/1998 | US5793713 Magneto-optical recording device and method for judging the recorded signals by detecting magnetization states |
| 08/11/1998 | US5793712 Magneto-optical reproducing method using a reproducing layer of horizontal magnetized state at room temperature |
| 08/11/1998 | US5793711 Composite magneto-optic memory and media |
| 08/11/1998 | US5793556 High speed PES demodulator |
| 08/11/1998 | US5793546 Data transmitting apparatus and data reproducing apparatus using format compatibility to achieve upward and downward compatibility |
| 08/11/1998 | US5792571 Magneto-optical recording medium having large kerr rotational angle in short wavelength range |
| 08/04/1998 | US5790513 Magneto-optical recording medium capable of super resolution reproduction and information reproduction method using the same |
| 08/04/1998 | US5790505 Optical data recording/reproducing method and apparatus for determing an optimum recording power |
| 08/04/1998 | US5790504 Integrated optical head with an emitting light splitting polarizing prism and a detecting light splitting polarizing element |
| 08/04/1998 | US5790502 Optical pickup with conversion of diffusion angle of outgoing light relative to diffusion angle of incident light |
| 08/04/1998 | US5790501 Information reproducing device |
| 08/04/1998 | US5790499 Method for protecting data recorded on a partial read-only memory (ROM) medium from unauthorized copying |
| 08/04/1998 | US5790495 Data generator assembly for retrieving stored data by comparing threshold signal with preprocessed signal having DC component |
| 08/04/1998 | US5790484 Disc recording/reproducing apparatus having memory control which allows recording immediately upon loading of the disc |
| 08/04/1998 | US5790483 Magneto-optical disk drive device that writes and reads from two sides of a disk |
| 08/04/1998 | US5790482 Optical disk apparatus for recording information using a light intensity modulation method with a partial response detector |
| 07/29/1998 | EP0855709A1 Disk apparatus |
| 07/29/1998 | EP0855704A2 A magnetic head driving device |
| 07/28/1998 | US5787399 Portable recording/reproducing device, IC memory card recording format, and recording/reproducing mehtod |
| 07/28/1998 | US5787228 Portable vehicle articulated windshield defroster with heated air-flow and timer |
| 07/28/1998 | US5787064 Optical head with a plurality of optical sensors to receive reflected light beams for reproducing focusing, tracking and RF signals |
| 07/28/1998 | US5787060 Optical data recording/reproducing apparatus for producing data and servo signals using different light receiving areas of a light receiver |
| 07/28/1998 | US5787056 Magneto-optical recording medium with multiple magnetic layers |
| 07/28/1998 | US5786078 Increasing thickness, decreasing curie temperature of layers; stability |
| 07/22/1998 | EP0727085B1 Method and apparatus for retrieving digital data from a magnetic storage medium |
| 07/22/1998 | EP0485234B1 Information recording and reproducing device |
| 07/22/1998 | CN1188558A Device for recording information carrier, method and information carrier therefor |
| 07/21/1998 | US5784353 Optical disk initializing apparatus |
| 07/21/1998 | US5784347 Optical disk device having optical phase compensator |
| 07/21/1998 | US5784343 Magneto-optical recording and/or reproducing apparatus having a plurality of optical systems |
| 07/21/1998 | US5783320 Magneto-optical recording medium and process for producing the same |