Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7423939 | Method for manufacturing magneto-optical recording medium A method for manufacturing a magneto-optical recording medium in which reading of recorded information is performed through domain wall displacement in a reproduction layer is provided, in which magnetic separation of groove side-wall portions is performed more reli... | 09/09/2008 |
| 7315667 | Propagating light to be sensed Light to be sensed is spreaded across an entry surface of a transmission structure with a laterally varying energy transmission function. For example, the light could be output from a stimulus-wavelength converter, provided through an optical fiber, or it could come... | 01/01/2008 |
| 7200072 | Domain wall displacement magneto-optical recording and reproducing apparatus A recording/reproducing apparatus for a domain-wall-displacement magneto-optical recording medium with good format efficiency, capable of providing a good reproduction signal and securing a maximum recording region for a user is provided which comprises a recording ... | 04/03/2007 |
| 7180831 | Magneto-optical recording medium having a recording layer of columnar structure It is an object of the present invention to provide a magneto-optical recording medium including a recording film having at least a reproduction layer, an intermediate layer, and a recording layer, on an optical disk substrate, wherein the recording film is a magnet... | 02/20/2007 |
| 7173885 | Domain-wall-displacement-type magnetooptical recording medium A domain-wall-displacement-type magnetooptical recording medium is provided in which a floating magnetic field from a surrounding portion that operates on a recording/reproducing portion is suppressed. The recording medium includes a displacement layer having a comp... | 02/06/2007 |
| 7126884 | Magneto-optical recording medium having multiple magnetic layers In a magneto-optical recording medium, a first magnetic layer is made of a material using a Gd—Fe film or a Gd—Fe—Co film as a base so that a magnetic field normalized based on saturation magnetization of a magnetic domain wall driving field can be smaller tha... | 10/24/2006 |
| 7126886 | Magneto-optical recording medium and method for producing the same According to the present invention, a light beam is radiated to an area between recording tracks while the intensity of a magnetic field from the outside to a magneto-optical recording medium is suppressed to 50 Oe or less, whereby magnetic anisotropy formed between... | 10/24/2006 |
| 7110328 | Recording and reproducing apparatus for recording and reproducing information to and from a magneto-optical storage medium An information recording/reproducing apparatus for recording and reproducing information to and from a magneto-optical storage medium that includes a first magnetic layer for recording at least information, a second magnetic layer for regulating a switched connectiv... | 09/19/2006 |
| 7092318 | Magneto-optical recording medium having a plurality of magnetic layers In a magneto-optical recording medium, a first magnetic layer is made of a material using a Gd—Fe film or a Gd—Fe—Co film as a base so that a magnetic field normalized based on saturation magnetization of a magnetic domain wall driving field can be larger than... | 08/15/2006 |
| 7060373 | Magneto-optical recording medium and signal reproduction method A magneto-optical recording medium includes a first magnetic layer (reproduction layer), a second magnetic layer (control layer), a third magnetic layer (blocking layer), and a fourth magnetic layer (recording layer) having respective Curie temperatures TC1 | 06/13/2006 |
| 7020049 | Apparatus using a detected light beam power at a start of change of a magnetized state for setting a reproducing light beam In a magneto-optical disk drive using a domain wall moving magneto-optical recording medium, a test-writing operation adjustment to deal wit dynamic fluctuation factors is minimized, and a reproducing or recording laser power is automatically optimized. A power of a... | 03/28/2006 |
| 6985409 | Recording method and apparatus of domain wall displacement type magneto-optical recording medium The present invention provides a method of recording information on a magneto-optical recording medium of domain wall displacement type having a preformat area and a data area succeeding thereto, comprising the steps of generating a reproduction signal from said med... | 01/10/2006 |
| 6985428 | Optical recording medium, recording, and reproduction apparatus having multiple recording capacity features A recording and reproduction apparatus using a plurality of generations of optical recording media and an optical recording medium used in such a recording and reproduction apparatus, wherein the optical recording medium comprises first and second recording areas, t... | 01/10/2006 |
| 6980508 | Optical recording medium, recording, and reproduction apparatus having multiple recording capacity features A recording and reproduction apparatus using a plurality of generations of optical recording media and an optical recording medium used in such a recording and reproduction apparatus, wherein the optical recording medium comprises first and second recording areas, t... | 12/27/2005 |
| 6980491 | Domain wall displacement type magneto-optical recording medium and recording method There is provided a domain wall displacement type magneto-optical recording medium and a recording method that allow signals recorded with a high density over the limit of resolution of optical systems to be regenerated without increasing complexity of a recording a... | 12/27/2005 |
| 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 |
| 6949302 | Magneto-optical recording medium having a reproducing layer composed to control movement of domain walls therein A magneto-optical recording medium includes at least a first magnetic layer, a second magnetic layer and a third magnetic layer which are layered in this order, the first magnetic layer being formed of a perpendicularly magnetized film having a relatively small wall... | 09/27/2005 |
| 6894954 | Domain wall-displacement type magneto-optical medium and reproducing method for the same A magneto-optical recording medium has a domain wall displacement layer, a recording layer for accumulating information and a switching layer arranged between said domain wall displacement layer and said recording layer and having a Curie temperature lower than thos... | 05/17/2005 |
| 6885628 | Optical recording medium, recording, and reproduction apparatus having multiple recording capacity features A recording and reproduction apparatus using a plurality of generations of optical recording media and an optical recording medium used in such a recording and reproduction apparatus, wherein the optical recording medium comprises first and second recording areas, t... | 04/26/2005 |
| 6795379 | Magneto-optical medium utilizing domain wall displacement and process of reproduction A magneto-optical medium of a domain wall displacement type is provided which does not cause inward leakage of signals caused by domain wall displacement from the rear of a reproducing light spot. The magneto-optical medium comprises a domain wall displacement layer... | 09/21/2004 |
| 6765847 | Optical disk and method of magnetically separating tracks of the optical disk On a disk-shaped substrate with pits and grooves, a first dielectric layer, a magnetic layer, and a second dielectric layer are formed. A data region used for recording/reproduction includes a plurality of tracks, and is divided into a plurality of segments. Each se... | 07/20/2004 |
| 6747919 | Magneto-optical recording medium, and method and apparatus for producing the same By irradiating a light beam between recording tracks of the magneto-optical recording medium, the magnetic anisotropy of at least one layer selected from the group consisting of the domain wall displacement layer and the recording layer formed between the recording ... | 06/08/2004 |
| 6707767 | Domain wall displacement magneto-optical storage medium, and method for reproducing thereof A magneto-optic recording medium in which information is reproduced while a recording magnetic domain is enlarged by displacing a domain wall based on a temperature distribution formed by a beam of light and having a maximum temperature Tr. The recording medium comp... | 03/16/2004 |
| 6614731 | Method and apparatus for recording magnetic domain having an arc shape convex in a forward scanning direction of a magneto-optical recording medium To provide an information recording method, an information recording apparatus and an information reproducing method and an apparatus for a domain wall mobile type magneto-optical medium. In the information recording method, a light beam scans on the medi... | 09/02/2003 |
| 6399174 | Magnetooptical recording medium on which high-density information can be recorded and method of reproducing the recorded information A magnetooptical recording medium includes a first magnetic layer, a second magnetic layer whose Curie temperature is lower than that of the first magnetic layer, and a third magnetic layer, comprising a vertically-magnetizing film, whose Curie temperatur... | 06/04/2002 |
| 6343052 | Magneto-optical medium having film with rounded upper corner and thickness decreasing to the side end on lands The present invention provides a domain wall displacement-type magnetooptical recording medium effective for decreasing jitter, in which a conventional herringbone recording mark can be changed to a linear mark. The magnetooptical recording medium of the prese... | 01/29/2002 |
| 6338911 | Magneto-optical recording medium A reproduction layer, a magnetic domain extending layer, an intermediate layer, and a recording layer are formed in this order. The magnetic domain extending layer, the intermediate layer, and the recording layer are exchange-coupled. The intermediate lay... | 01/15/2002 |
| 6269056 | Recording method for a magneto-optical recording medium for position adjustment of a magnetic head A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length o... | 07/31/2001 |
| 6265062 | Magnetic recording medium capable of reproducing information by displacing magnetic wall and recording-reproducing method therefor A magnetic recording medium comprising first, second and third magnetic layers laminated in succession, wherein when (1) the magnetic wall energy density, saturation magnetization, magnetic wall coercivity and film thickness of the first magnetic layer at... | 07/24/2001 |
| 6249489 | Information recording-reproducing method utilizing domain wall displacement, and magneto optical medium Disclosed herein is an information recording-reproducing method, wherein a domain wall is displaced on a recording medium in which information has been recorded, thereby conducting the reproduction of the information, the method comprising, projecting a l... | 06/19/2001 |
| 6084830 | Signal reproducing apparatus for reproducing information by moving magnetic walls A micro mark on a magnetic recording medium is reproduced in a signal reproducing apparatus by causing a magnetic wall to move on the recording medium. A partial temperature profile is applied on the medium by a heating device which is adapted to be movab... | 07/04/2000 |
| 6041024 | Signal reproducing apparatus utilizing displacement of magnetic wall A signal reproducing apparatus reproduces a micro mark by causing a magnetic wall to be displaced on a magnetic recording medium. A partial temperature distribution is caused on the medium by a light beam irradiated thereon by using a heating device. A ma... | 03/21/2000 |
| 5966348 | Information reproducing method and apparatus for reproducing information by moving magnetic wall Method and apparatus for reproducing information by enlarging a magnetic domain on a medium by moving a magnetic wall. The apparatus includes a heating device for partially heating the medium in order to cause movement of the magnetic wall, and a magnetic... | 10/12/1999 |
| 5962154 | Magneto-optical recording medium exclusively for reproduction, method of manufacturing the same and method of reproducing information from the medium A magneto-optical recording medium, in which a magnetic wall is displaced to thereby enlarge a magnetic domain so as to reproduce a micro magnetic domain representing information, that has a non-magnetic substrate, a magnetic layer laminated on the substr... | 10/05/1999 |
| 5956296 | Information reproducing apparatus for reproducing information by magnetic wall movement An information reproducing apparatus for reproducing information by moving a magnetic wall along an information track on a recording medium. The apparatus includes an optical system for irradiating the recording medium with a light spot of an oval shape h... | 09/21/1999 |
| 5956297 | Signal reproducing apparatus using movement of magnetic wall In a signal reproducing apparatus, information is reproduced by moving a magnetic wall on a magnetic recording medium while effecting relative movement between a light spot and the medium. A light spot is irradiated for forming a temperature distribution ... | 09/21/1999 |
| 5831944 | Magnetooptical recording medium and method for reproducing information from a magnetooptical 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... | 11/03/1998 |
| 5448422 | Magnetic head drive circuit including capacitors for storing charge to drive a magnetic head coil A drive circuit apparatus for driving a magnetic head includes a magnetic core, a coil wound around the magnetic core, and a unit for supplying current to the coil. The supplying unit includes first and second capacitors and a charging unit such that the ... | 09/05/1995 |
| 5418076 | Magnetic-optical recording medium A magneto-optical recording medium in which n layers (n is an odd number equal to or more than 5) of magnetic thin film are exchange-coupled to be laminated on a substrate, and assuming that the n layers of magnetic thin film are the first magnetic layer,... | 05/23/1995 |
| 5258237 | Magneto-optic recording medium A megneto-optic recording medium which is comprised of a first, a second, a third and a fourth magnetic layers coupled each other between the adjacent layers by an exchange force, wherein said first through fourth magnetic layers satisfy Tc1 | 11/02/1993 |
