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| Number | Title | Issue Date |
| 7399539 | DWDD-type magneto-optic recording medium including buffer regions between recording track regions and method of producing the same A magneto-optic recording medium has a stacked structure composed of a memory layer, a domain wall displacement layer having domain wall-resistant magnetism smaller than the memory layer, and a switching layer having a lower Curie temperature than these layers inter... | 07/15/2008 |
| 7348647 | Digital memory cell device A digital magnetic memory cell device for read and/or write operations, having a soft-magnetic read and/or write layer system and at least one hard-magnetic reference layer system, which is designed as an AAF system and includes at least one reference layer, wherein... | 03/25/2008 |
| 7210155 | Magneto-optical recording medium having in-plane magnetizing layer A high-density magneto-optical recording medium having excellent jitter properties is provided. A pattern-dependent shift of the length of a recorded mark does not occur even when a minute mark has increased sensitivity to a recording magnetic field. A magneto-optic... | 04/24/2007 |
| 7173884 | Magnetooptic recording medium and its manufacturing method A first dielectric layer 3, a multilayer magnetic film 10 in which a first magnetic layer 4 having perpendicular magnetic anisotropy at room temperature, a second magnetic layer 5 having inplane magnetic anisotropy at room temperature, an... | 02/06/2007 |
| 7164623 | Magneto-optical recording medium The present invention provides a magneto-optical recording medium including a recording layer, an intermediate layer and a reproducing layer stacked in this order. Information recorded in the recording layer is transferred to the reproducing layer through the interm... | 01/16/2007 |
| 7161876 | Magneto-optical recording medium, and method for recording information in a recording layer A magneto-optical recording medium includes a substrate and a reproducing layer and a recording layer provided on the substrate. A recording magnetic domain is provided in the recording layer by heating the recording layer by irradiation with light and applying a re... | 01/09/2007 |
| 7151716 | Magneto-optical recording medium having a transfer control layer A magneto-optical recording medium, including a recording layer, a transfer control layer magnetically coupled to the recording layer, and a reproduction layer. The recording layer includes a recording magnetic domain in which information is recorded by a magnetizat... | 12/19/2006 |
| 7133330 | Magneto-optical recording apparatus having recovery processing unit A magnetooptic recording medium has at least a recording layer for recording data and a reproducing layer for reproducing the data recorded in the recording layer onto a substrate and reproduces the data by setting a proper reproducing laser power upon reproduction.... | 11/07/2006 |
| 7110327 | Magneto-optical recording and reproducing method, using reproducing layer with high saturation magnetization A magnetic recording medium comprises, on a substrate, a recording auxiliary layer, a recording holding layer, recording control layer, and a recording layer. The recording layer is constructed by using a ferri-magnetic material having perpendicular magnetization. T... | 09/19/2006 |
| 7050361 | Magneto-optical storage medium and optical disk drive A magneto-optical storage medium that protects against the effects of cross-talk, making it possible to further reduce the level of track density, and which also makes it possible to conduct high-density recording/playback with a reduced magnetic field for erasure a... | 05/23/2006 |
| RE38922 | Magneto-optical recording medium and method for reproducing information from a magneto-optical recording medium having three layers A magnetooptical recording medium has a first magnetic layer which is an in-plane magnetization film at both room temperature and high temperatures and changed to a perpendicular magnetization film at intermediate temperatures, and a second magnetic layer which is c... | 12/20/2005 |
| 6811889 | Magneto-optical recording medium having a GDFECO readout magnetic film A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording magnetic fi... | 11/02/2004 |
| 6767656 | Magneto-optical recording medium and method of reproducing the same A magneto-optical recording medium comprising four magnetic layers including a mask layer, a reproduction layer, an intermediate layer and a recording layer, wherein the reproduction layer and the recording layer each have a direction of easy magnetization extending... | 07/27/2004 |
| 6754140 | Magneto optical recording medium having multiple magnetic layers A magneto-optical recording medium for recording and reproducing data through light irradiation on a magnetic film side of the medium, the medium including at least one magnetic film which is formed on a substrate and has an easy axis of magnetization in a perpendic... | 06/22/2004 |
| 6707766 | Magneto-optical storage media A magneto-optical storage medium includes an interference layer, a magnetic domain expansion layer, an intermediate layer, a magnetic masking layer, a recording layer, and a protection layer which are sequentially formed on a substrate. The magnetic domain expansion... | 03/16/2004 |
| 6671233 | Magneto-optical recording medium and reproduction method therefor A magneto-optical recording medium comprises, on a substrate, a dielectric layer, a GdFeCo reproducing layer, a non-magnetic layer, and a TbFeCo recording layer. Upon reproduction, a DC magnetic field Hex is applied in the recording direction, and a repro... | 12/30/2003 |
| 6671234 | Magneto-optical storage media and method of reproducing the same A magneto-optical storage medium includes: a reproduction magnetic layer exhibiting in-plane magnetization at room temperature and changing to perpendicular magnetization at a critical temperature or higher; first and second in-plane magnetized layers wit... | 12/30/2003 |
| 6638597 | Magneto-optical recording medium In order to improve reproduction characteristics of a magneto-optical recording medium in a case of being subject to a magnetically induced super resolution readout process utilizing a blue-violet laser beam, there is provided a magneto-optical recording ... | 10/28/2003 |
| 6630252 | Magneto-optical recording medium comprising four magnetic layers An MO disk includes a readout layer, an intermediate layer and a recording layer each of which is made of a rare earth-transition metal amorphous material. The MO disk also includes a fourth magnetic layer formed on the recording layer and made of a rare ... | 10/07/2003 |
| 6545955 | Magneto-optic storage media and methods of reproducing the same The magneto-optical storage medium includes: a reproduction layer exhibiting in-plane magnetization at room temperature and changing to perpendicular magnetization above a transition temperature Tp1; a first in-plane magnetized layer disposed adjacent the repr... | 04/08/2003 |
| 6534162 | Magneto-optical recording medium A magneto-optical recording medium includes at least: a reproducing magnetic layer composed at least of Gd and Co showing an in-plane magnetization state at room temperature and a transition to a perpendicular magnetization state at temperatures of not lo... | 03/18/2003 |
| 6532196 | Magneto-optical recording medium comprising recording layer and reproducing layer In a magneto-optical recording medium comprising a recording layer and a reproducing layer, a transfer layer and a magnetic shielding layer are successively formed between the recording layer and the reproducing layer respectively. The reproducing layer i... | 03/11/2003 |
| 6521357 | Magneto-optical recording medium A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording ... | 02/18/2003 |
| 6456571 | Magneto-optical recording medium and reproducing method thereof A magneto-optical recording medium comprising a recording magnetic layer made of a perpendicularly magnetized film and a multilayer reproducing film, wherein the multilayer reproducing film has two reproducing magnetic layers which are in a in-plane magne... | 09/24/2002 |
| 6430115 | Magneto-optical recording device with three distinct layers A reproducing layer having perpendicular magnetization in a single layer, an in-plane magnetic layer, and a recording layer having perpendicular magnetization are formed in this order. When the reproducing layer, the in-plane magnetic layer, and the recor... | 08/06/2002 |
| 6400656 | Magneto-optical recording medium comprising recording layer and reproducing layer In a magneto-optical recording medium comprising a recording layer and a reproducing layer, a transfer layer and a magnetic shielding layer are successively formed between the recording layer and the reproducing layer respectively. The reproducing layer i... | 06/04/2002 |
| 6388956 | Magneto-optical storage media A magneto-optical storage medium includes an interference layer, a magnetic domain expansion layer, an intermediate layer, a magnetic masking layer, a recording layer, and a protection layer which are sequentially formed on a substrate. The magnetic domai... | 05/14/2002 |
| 6333899 | High density magneto-optical recording medium and production method thereof A magneto-optical recording medium having a magnetic film stack structure includes a recording layer, a reproducing layer, and an intermediate layer formed between the recording layer and the reproducing layer. The intermediate layer has an easy magnetiza... | 12/25/2001 |
| 6333890 | Memory device with a plurality of common data buses According to an aspect of the present invention, a memory device having a plurality of banks carries out bank interleaving by use of a plurality of common data buses, the number of which is less than the number of the banks. The present invention enables ... | 12/25/2001 |
| 6272077 | Magneto-optical recording medium having intermediate layer of in plane magnetization A magneto-optical memory medium according to the present invention comprises a reproducing layer, which has in-plane magnetization at room temperature and perpendicular magnetization when heated to above a predetermined temperature by a reproducing light ... | 08/07/2001 |
| 6147939 | Magneto-optical recording medium having intermediate layer of in-plane magnetization A magneto-optical memory medium according to the present invention comprises a reproducing layer, which has in-plane magnetization at room temperature and perpendicular magnetization when heated to above a predetermined temperature by a reproducing light ... | 11/14/2000 |
| 6118736 | Magneto-optical recording medium having a reading layer in which transferred recording marks are extended A magneto-optical recording medium and a reading method thereof are disclosed, in which the reading output is hardly reduced even in bits written at sufficiently narrower intervals than the optical diffraction limit of light for reading. The magneto-optic... | 09/12/2000 |
| 5955191 | Magneto-optical recording medium and a reproducing method using such a medium A super-resolution magneto-optical recording medium has a reproducing layer, an in-plane magnetization layer and a recording layer. The reproducing layer and the recording layer are magnetostatically coupled, and each of the layers is made of a rare-earth... | 09/21/1999 |
| 5939187 | Magneto-optical recording medium A magneto-optical recording medium includes a reproducing layer which has in-plane magnetization at room temperature and has perpendicular magnetization at an elevated temperature of not less than a critical temperature, a recording layer made of a perpen... | 08/17/1999 |
| 5879822 | Magneto-optical recording medium using in-plane magnetization film and capable of reproducing at super-high resolution and method of reproducing for such medium A magneto-optical recording medium is constructed by a reproduction layer which assumes an in-plane magnetization state at room temperature and becomes a perpendicular magnetization film at temperatures between room temperature and a Curie temperature, a ... | 03/09/1999 |
| 5863649 | Magneto-optical recording medium In a magneto-optical recording medium including a reading-out layer, which is in an in-plane magnetization state at a room temperature and in a perpendicular magnetization state when the temperature rises, and a recording layer, which is in a perpendicula... | 01/26/1999 |
| 5830589 | Magneto-optical recording medium, and information reproducing method using the medium A magneto-optical recording medium includes a reproducing layer, a recording layer and an intermediate layer provided between the reproducing layer and the recording layer. The reproducing layer is an in-plane magnetization film at least at room temperatu... | 11/03/1998 |
| 5810979 | Magnetooptical recording medium, method for producing the same, method for recording or reproducing information in or from the same A method of producing a magneto-optical recording medium provided with a reproducing layer on a recording film on a substrate, the reproducing film being in-plane magnetized at room temperature and perpendicularly magnetized at an elevated temperature, an... | 09/22/1998 |
| 5790513 | Magneto-optical recording medium capable of super resolution reproduction and information reproduction method using the same A magneto-optical recording medium includes a first magnetic layer which becomes an in-plane magnetization film at room temperature, and a perpendicular magnetization film at a temperature between room temperature and the Curie temperature of the layer, a... | 08/04/1998 |
| 5777953 | Arrangement of magneto-optical recording medium which capable of reproducing an individual bit A magneto-optical recording medium is arranged so that (1) a first transparent dielectric layer, (2) a reproduction layer showing in-plane magnetization at room temperature while showing perpendicular magnetization in response to temperature rise, (3) a s... | 07/07/1998 |
