Matches 1 - 50 out of 55 1 2 >


Match Document Document Title
7920458 Optical recording medium, and recording and reproducing method  
An optical recording medium is provided with at least a substrate, light absorbing and heat generating parts each of which absorbs light and generates heat, and recording parts, and each of the...
7887939 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof  
An information recording medium comprises a substrate, a second recording layer, a second light transmitting layer, a first recording layer for recording different information from that to be...
7709112 Information recording medium, and apparatuses for reproducing, recording, and recording and reproducing thereof, and methods for reproducing, recording, and recording and reproducing thereof  
An information recording medium comprises a substrate, a second recording layer, a second light transmitting layer, a first recording layer for recording different information from that to be...
7586833 Magneto-optical recording medium  
A magneto-optical recording medium in which the inside of grooves formed along recording tracks is a signal recording area in groove recording, and the domain wall displacement detection method is...
7548398 Thermally assisted magnetic recording medium  
A thermally assisted magnetic recording medium includes a substrate having a first surface and a second surface opposite to the first surface. A recording layer is formed on the first surface of...
7463401 Integrated micro-optical systems  
An integrated micro-optical system includes at least two wafers with at least two optical elements provided on respective surfaces of the at least two wafers, at least one of the two optical...
7433276 Domain wall displacement detection system magneto-optical recording medium and its manufacturing method  
A domain wall displacement detection (DWDD) system magneto-optical recording medium forms a land 3 and a groove 4 as signal recording areas. When a domain wall displacement improvement is changed...
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...
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...
7359291 Magneto-optical storage medium capable of recording plural rows of marks on each track  
An optical disk recording method of recording data on an optical disk by applying laser light to a track of the optical disk, includes the steps of a) driving a plurality of laser light sources in...
7090933 Magneto-optical recording medium including a soft magnetic layer, a protective layer and a silane coupling agent layer, in this order  
The invention is a magneto-optical recording medium characterized by containing at least a soft magnetic layer, a protective layer, a resin layer having a servo pattern formed thereon, a reflecting...
7012857 Magneto optical recording medium having a multilayer recording film of different thickness  
A magneto optical recording medium capable of stable recording and readout using a DWDD system is provided. The magneto optical recording medium of the present invention comprises an optical disk...
6999398 Method and apparatus for recording information on information recording medium  
Information is recorded on an information recording medium such as a magneto-optical recording medium, having two recording tracks arranged alternately, typically in a double spiral manner. The two...
6982944 Optical recording medium having relation between groove depths and pit depths  
An optical information-recording medium having in-groove pits, which is excellent in recording and reproduction characteristics and tracking characteristics, is provided. A method for producing the...
6980490 Optical disk and manufacturing method for the same  
An optical disk is made of tracks that are magnetically separated from one another by scanning a focused light beam over lands between tracks at a predetermined power and annealing to lower the...
6975564 Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same  
An optical disk of the present invention includes a substrate and a recording layer disposed above the substrate, and reproduces an information signal by a DWDD system, using light incident from...
6853513 Magnetic scanning system  
A scanning device for scanning data-carrying disks. The disks include a magnetisable layer to and from which data is written and read using a magnetic transducer, such as a Giant Magneto-Resistive...
6804175 Thermally assisted magnetic recording medium having non-recording areas  
A storage medium for thermally-assisted magnetic recording has a recording layer which substantially parallel tracks for recording information. The recording layer includes a series of recording...
6801479 Method for recording plural rows of record marks in one track in magneto-optical recording device  
An optical disk recording method of recording data on an optical disk by applying laser light to a track of the optical disk, includes the steps of a) driving a plurality of laser light sources in...
6773782 Magnetic memory medium having a magnetic film laminated on a substrate and a non-magnetic film formed thereon, and method of manufacturing the same  
The surface of a disk medium includes a substrate whose surface includes grooves and lands. A non-magnetic underlayer and a magnetic recording layer are formed on the substrate. Smoothing...
6759137 Opto-magnetic recording medium with a garnet ferrite recording layer, and opto-magnetic information recording/reproducing device  
This invention relates to magneto-optical recording media such as magneto-optical disks and cards, manufacturing methods of the medium and a magneto-optical recording and playback device to record...
6724694 Disk mastering based on near-field optical systems  
Structures of storage media for optical storage systems, especially for systems in the near-field configuration to couple radiation between the optical head and the media at least in part by...
6690626 Optical disk with magnetic layer separated magnetically between tracks and method of magnetically separating tracks of the optical disk  
On a disk-shaped substrate in which a predetermined region ranging in a radial direction is used as a data region for recording/reproduction, a first dielectric layer, a magnetic layer, and a...
6687200 Recording/reproducing apparatus for recording data in recording pits  
A recording/reproducing apparatus is configured to displace near-field light for recording or reproduction and tracking illumination light toward an outer periphery of a recording pit when an...
6570826 Optical recording medium allowing high-density recording and reproduction of information  
A magnetically induced super-resolution (MSR) magneto-optical recording medium capable of reproducing a recorded mark smaller in size than a beam spot, having recording tracks consisting of lands...
6501728 Optical disc having groove and land tracks  
An over-writable magneto-optical recording medium in which a recording section has at least a first dielectric layer, a first recording layer, a second recording layer, and a second dielectric...
6483785 Magneto-optical recording method using the relation of beam diameter and an aperture of converging lens  
Featured is a recording and reproducing method for recording and reproducing information on and from a recording medium. The medium includes a base having a property that a light can be transmitted...
6418091 Magneto-optical recording medium having oxidized side wall between land and groove  
There are provided a magneto-optical disk, a super-resolution magneto-optical disk and a domain wall moving magneto-optical disk whose cross-talk, cross-write and cross-erasure are suppressed and...
6392972 Optical storage unit having a dual position optical phase adjuster  
An optical storage unit which uses a light beam to record information on and/or reproduce information from a recording medium. The recording medium is provided with at least one land and at least...
6262968 Optical information processing apparatus  
An optical information processing apparatus includes an optical recording medium having an information recording area constituted by groove portions and land portions alternately arranged in a...
6262955 Tracking control method and apparatus and recording medium adaptive to the same  
A tracking control method and apparatus for providing a stable tracking control for an optical recording medium of land/groove recording system. Wobbling signals are detected from each side of a...
6256266 Magneto-optical recording medium having lands and grooves of discontinue regions  
A magneto-optical recording medium has a plane structure in which are alternately arranged a groove having discontinuous regions formed at every 120 μm, for example, and land having discontinuous ...
5987002 Magneto-optical recording medium and method and apparatus for reproducing data therefrom  
A magneto-optical recording medium formed to record an information signal on both of lands and grooves provides a capability of reproducing an excellent signal with a small magnitude of crosstalk...
5870353 Magneto-optic recording medium, having the lands and grooves magnetized in one direction  
A high-quality magneto-optic signal is obtained by setting an optimum phase condition at the time of reproducing the land or groove record in a magneto-optic recording medium. By adjusting the...
5852591 Magneto-optical recording medium and head unit for a magneto-optical recording medium  
A magneto-optical recording medium having a substrate and magneto-optical recording film. The substrate is formed from a material having light transmittivity. One surface of the substrate is...
5831942 Phase compensation adjustor for magneto-optical recording device  
A high-quality magneto-optic signal is obtained by setting an optimum phase condition at the time of reproducing the land or groove record in a magneto-optic recording medium. By adjusting the...
5831943 Stabilized overwriteable optical recording method using laser beam intensity settings  
A stabilized overwriteable optical recording method, wherein overwriting is performed sufficiently because erasure does not become poor with the low level laser beam intensity PL being set too low....
5818811 Information recording and reproducing method for recording information on and reproducing information from an optical recording medium including a land portion divided into a plurality of information tracks  
An optical recording medium including a substrate formed with a groove portion and a land portion, and a magnetic layer laminated on the substrate, the width of the land portion and the width of...
5805565 Optical disk having wobbled information shared between tracks  
In an optical disk recording medium having grooves and lands formed on a substrate and information recording areas formed in association with both the groove and the land, prepits are disposed on a...
5798987 Low noise magneto-optical disk drive  
A magneto-optical disk drive comprises a magneto-optical disk having a land area and a groove area both for recording data therein. The disk drive emits a laser beam having a first wavelength and...
5790483 Magneto-optical disk drive device that writes and reads from two sides of a disk  
A disk drive device is provided to realize a simultaneous dual side access to thus increase the online capacity. Two independent focussed light emitting devices focus light on first and second...
5694379 Magneto-optical recording medium and recording apparatus therefor  
A magneto-optical recording medium capable of exhibiting a high track density and preventing occurrence of a crosstalk, is disclosed which is adapted for magneto-optically recording an information...
5618638 Optical magnetic recording medium  
An optical-magnetic recording medium comprising a tracking guide layer and a recording layer disposed on a substrate in which the recording layer is made of a magnetic material having a certain...
5499229 Track scanning for reproducing address information by crosstalk  
On an optical disk, information is recorded on both grooves and lands as guide tracks for guiding a light beam. The width of each groove and that of each land are set substantially equal to each...
5420832 Half height magnetooptical-disk recording and/or reproducing apparatus for a 5.25 inch large capacity magnetooptical-disk  
An optical disk recording and/or reproducing apparatus is provided which is capable of storing a large amount of information, transferring data at a high speed, supporting SCSI-1 and SCSI-2, and...
5414652 Magneto-optical memory element  
A magneto-optical memory element including: grooves, formed on at least one surface of a transparent substrate, for guiding a light beam; a magneto-optical recording layer formed on the surface of...
5341362 Optical memory device having guide tracks shaped for increasing the quality of information signals  
An optical memory device comprising a substrate and guide tracks having a depth of λ/8n or less formed on said substrate, wherein λ is the wavelength of laser light used for the optical memory d...
5258973 Method of pre-processing over-write capable magnetooptical recording medium, and pre-processed over-write capable magnetooptical recording medium  
An over-write capable magnetooptical recording medium is pre-processed by subjecting a track separation zone to a pre-processing field which aligns the magnetization of a recording layer in a...
5199022 Disk having data memorizing portion including land-shaped and groove-shaped areas, and writing/reading apparatus for the same  
A magneto-optical data reading member includes a transparent disk substrate, and land-shaped areas formed on the disk substrate in a spiral manner so as to be parallel with each other, and...
5191564 Over-write capable magnetooptical recording medium having groove depth of 800 Å or less  
There is disclosed an over-write capable magnetooptical recording medium, which includes a substrate having spirally or concentrically formed land portions, and grooves formed between the adjacent...
Matches 1 - 50 out of 55 1 2 >