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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Yoshinari; Jiro
Address:
Tokyo, JP
No. of patents:
46
Patents:












Patent Number Title Of Patent Date Issued
8080348 Hologram recording material and hologram recording medium December 20, 2011
The present invention provides a hologram recording material which is suitable for volume hologram record and can attain high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, that is, storage stability, durability, low dimensional change
8021800 Hologram recording material, process for producing the same and hologram recording medium September 20, 2011
The present invention provides a hologram recording material which is suitable for volume hologram record and attains high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, durability, low shrinkage and high multiplicity in holographic me
7939221 Hologram recording material, process for producing the same and hologram recording medium May 10, 2011
The present invention provides a hologram recording material which is suitable for volume hologram record and attains high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, durability, low shrinkage and high multiplicity in holographic me
7932000 Hologram recording medium April 26, 2011
The present invention provides a hologram recording medium which can attain high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, durability, low dimension change (low shrinkage) and high multiplicity in holographic memory record using a
7883821 Process for producing titanium-containing metal oxide, hologram recording material, process for February 8, 2011
The present invention provides a process for producing a titanium-containing metal oxide the coloration of which is decreased; a hologram recording material suitable for holographic memory recording using a blue laser, wherein a titanium-containing metal oxide the coloration of which
7872787 Holographic multiplex recording method, holographic recording apparatus and holographic recordin January 18, 2011
A holographic multiplex recording method which can keep a recording data rate constant and equalize nonuniformity in recording due to vibrations or the like, and a holographic recording apparatus and a holographic recording medium, which employ the method. In a process of multiplex-r
7869106 Holographic recording method, holographic recording apparatus, holographic recording and reprodu January 11, 2011
A holographic recording method, a holographic recording apparatus, a holographic recording and reproducing method, a holographic recording and reproducing apparatus, and a holographic recording medium for recording information in an angle multiplex fashion as a hologram in a first format
7796312 Holographic recording method and holographic recording apparatus September 14, 2010
A holographic recording apparatus 10 realizes multilevel gray-scale recording by: controlling a reflection type spatial light modulator (DMD 18D) via a control unit 24 so that an object beam in an object optical system 18 is reflected in an exposure direction so as to be incident on a
7760407 Multilayer holographic recording medium and manufacturing method of the same, multilayer hologra July 20, 2010
A multilayer holographic recording medium that improves recording density and data transfer rates. The multilayer holographic recording medium, from which information is reproduced by a multilayer holographic memory reproducing apparatus, includes a plurality of deposited holographic
7757095 Personal identification method, personal identification system, and optical information recordin July 13, 2010
In a personal identification system 10 for identifying a user on the basis of biometric information, a hologram is formed in a holographic recording portion 13 of an optical information recording medium 12. The hologram is provided by the interference between a reference beam subjected t
7715072 Hologram retrieval method and holographic recording and reproducing apparatus May 11, 2010
Provided is a hologram retrieval method and a holographic recording and reproducing apparatus for preventing an increase in SNR, a decrease in retrieval accuracy, or the retrieval itself from being made impossible, which would otherwise occur because of a small size of data used for
7688698 Holographic recording method and apparatus March 30, 2010
When recording on a holographic recording medium by using a recording beam, the time required for an asking servo control to recover is reduced to increase the data transfer rate. In the holographic recording apparatus 10, a laser beam from a laser light source 16 is formed into a co
7680010 Method for recording information on optical recording medium March 16, 2010
A method for recording information on an optical recording medium is provided so that it is satisfied that 0.16.ltoreq.(L.sub.v.times.T.sub.cool)/(.lamda./NA).ltoreq.0.30 and 0.06.ltoreq.(L.sub.v.times.T.sub.top)/(.lamda./NA).ltoreq.0.14, where .lamda. is a write wavelength of a lase
7678506 Holographic recording medium and method for manufacturing the same March 16, 2010
A holographic recording medium in which a thick holographic recording layer is formed without the use of multilayering and without accompanying thickness unevenness, scattering, and nonuniformity of dynamic range, and a method for manufacturing the same. The holographic recording medium
7672210 Holographic recording medium, method for recording and reproducing the same, and reproducing app March 2, 2010
A holographic recording medium 10 is configured to have a recording layer 12 on which information can be recorded as holograms; and first and second heat generating layers 14A and 14B provided in a pair so as to sandwich the recording layer 12. Then, the first and second heat generat
7589876 Holographic memory reproduction method and apparatus September 15, 2009
A method and apparatus for performing reproduction position servo-control without reducing the recording capacity of a holographic recording medium. Upon the reproduction of a holographic recording medium 18, part of a reproduction beam serving as a servo beam is projected onto a rec
7583422 Holographic recording medium and holographic recording and reproducing method September 1, 2009
A white-light reconstruction hologram and a Fourier hologram for data can be recorded in a same holographic recording medium. The holographic recording medium includes, in a substantially identical plane, a white-light reconstruction holographic recording layer region capable of form
7580340 Optical recording medium and a method for testing the same August 25, 2009
An optical recording medium and a method for testing that optical recording medium are provided, which can prevent degradation of a reproduction signal in the case where the optical recording medium is stored at a high temperature for a long time, which enables stable recording and r
7554706 Holographic recording method, apparatus therefor, and holographic recording and reproducing appa June 30, 2009
A holographic recording method and apparatus capable of performing phase code multiplex recording without employing a phase spatial light modulator. The holographic recording apparatus 10 performs phase spatial modulation of a reference beam to be projected onto a holographic recordi
7545723 Holographic recording medium, method for manufacturing the same, and holographic recording-repro June 9, 2009
In a holographic recording medium, noise is prevented from being generated by servo light in a recording layer without scarifying recording regions. A holographic recording medium 12 has a servo layer 16 formed on a recording layer 14 on a substrate 13 via a spacer layer 15. The servo
7545546 Holographic recording medium and method for manufacturing the same June 9, 2009
A holographic recording medium which has parallelism of high precision and causes little substrate deformation ascribable to contraction of its recording areas when recording interference fringes, and a method for manufacturing the same. The holographic recording medium has a hologra
7542185 Holographic recording medium, holographic record erasing method, and holographic recording and r June 2, 2009
A holographic record erasing method and a holographic recording and reproducing apparatus in which data reproduction can be disabled without irradiating a holographic recording medium with a high energy erasing beam or physically destroying the medium. A holographic recording medium
7532373 Holographic recording method, holographic recording apparatus, holographic memory reproducing me May 12, 2009
The pitch of light beam spots on a light receiving surface of an address detector upon search of information recorded on a holographic recording medium is decreased to reduce a distance between the holographic recording medium and the address detector. In a holographic recording and
7525894 Apparatus and method for recording and reproducing optical information April 28, 2009
In recording of information, an information beam as S-polarization is incident on an optical information recording medium. After passing through the optical information recording medium, the information beam is reflected by reflection apparatus and passes through a polarization contr
7518972 Holographic multiplex recording method April 14, 2009
A holographic multiplex recording method is provided in which remaining dynamic range in each recording area is made more uniform upon holographic multiplex recording. In this holographic recording method, a first-stage recording spot row RX.sub.1 is formed by arranging recording spo
7483191 Holographic recording method, holographic memory reproduction method, holographic recording appa January 27, 2009
A holographic recording and reproduction apparatus has a spatial light modulator for converting digital information to a two-dimensional image and for intensity modulating an object beam based on the two-dimensional image. The spatial light modulator is configured to employ four or more
7471606 Method of recording information on optical recording medium, and information recording and repro December 30, 2008
An information recording method enables the precise formation of a recording mark on a recording layer having a high light transmittance such as an L1 layer of a double-layered optical recording medium. The information recording method uses the following recording strategy. A laser b
7446916 Holographic recording and reproduction apparatus, and method with temperature adjustment device November 4, 2008
A holographic memory reproduction apparatus which makes a wavelength of a reproducing laser beam coincident with a wavelength of a laser beam used for holographic recording when information is reproduced from a holographic recording medium. In the holographic memory reproduction appa
7385893 Method for forming marks on write-once medium than applying second beam with power level lower t June 10, 2008
A write-once high density optical recording medium capable of a high speed recording that effectively forms space between recording marks. A recording layer 18 of a high speed write-once optical recording medium 10 is formed by laminating a first sub recording layer 18A and a second sub
7385741 Holographic recording system and optical chopper June 10, 2008
A holographic recording system with a simple structure is provided that can make a holographic recording beam follow a recording medium traveling even at high speed. The holographic recording system 10 includes a chopper lens 30 that travels in synchronization with and in a same dire
7304774 Holographic recording medium December 4, 2007
A holographic recording medium 10 includes: a recording layer 12; two substrates 14 and 16 sandwiching the same; and a photosensitive protective layer 18 covering these recording layer 12 and substrates 14 and 16 entirely. The recording layer 12 is set so that its photosensitivity co
7274497 Holographic recording medium, method for adding address information to same, and method of addre September 25, 2007
Provided are a holographic recording medium, a method for adding address information to the holographic recording medium, and a method for addressing that can identify two-dimensional information pages by a simple addressing operation. In the holographic recording medium 12, two-dime
7110335 Recording and reproducing method for optical recording medium and optical recording medium September 19, 2006
A write-once type optical recording medium is provided, which is low-cost and capable of maintaining the recording and reproducing stability high while enabling the relative ratio of read power to write power to be set high.The high-speed write-once type optical recording medium 10 inclu
6982111 Optical recording medium and recording method for optical recording medium January 3, 2006
To obtain an optical recording medium capable of recording at various recording transfer rates from a low speed to a high speed, by using a simple recording strategy.A recording layer 18 of a write-once optical recording medium capable of recording from a low speed to a high speed is
6961161 Holographic recording and reproducing apparatus November 1, 2005
An image detected by a CCD image sensor 108 when only a non-modulated signal light is applied to a holographic memory 120 in which data is not recorded is ensured as a noise pattern. When data is reproduced, the previously obtained noise pattern is subtracted from a reproduced image
6953616 Multi-layered optical recording medium October 11, 2005
A multi-layered optical recording medium comprising a plurality of sets of at least a recording layer formed of an inorganic material and a resin layer formed of an energy-beam curable resin as an overlaying layer of the recording layer on a base with a fitting center hole formed in a ce
6733858 Optical recording medium and optical recording method therefor May 11, 2004
Provided is a medium having a phase change recording layer wherein crystallization of the recording layer is facilitated, and at the same time, wherein the region to be crystallized is crystallized at an accurate dimension. The optical recording medium has a recording layer 4 comprising
6656559 Optical recording medium and optical recording method therefor December 2, 2003
A write once medium having a phase change recording layer is provided. In this medium, stable recorded state and high crystallizability of the recording layer are simultaneously realized. The optical recording medium has a recording layer 4 comprising at least one phase change layer 41 a
6560182 Optical recording method May 6, 2003
In overwriting in an optical recording medium of phase change type at a high linear velocity, an increase in jitter is prevented without increase a laser power, by an optical recording method using a pulse train having at least 1 unit pulse of an upward pulse and a downward pulse continu
6540397 Optical information storage medium April 1, 2003
An optical information medium comprising at least two data layers for bearing recorded information, and a servo layer for bearing tracking servo, information which is independently formed from the data layers; wherein the medium is used with a recording or reading system wherein a da
6399173 Optical recording medium and method for making the same June 4, 2002
In phase change optical recording media wherein initialization process of the recording layer has been the rate determining and cost-increasing factor in the production of the medium, the production cost is reduced by reducing the time required for the initialization and simplification o
6333913 Optical recording medium and optical recording method December 25, 2001
An optical recording medium of phase change type wherein favorable recording/reproducing properties are realized in high density recording, in particular, when the minimum mark length is up to 0.6 .mu.m and the track pitch is up to 0.7 .mu.m is provided. An optical recording method w
6195326 Phase-change type medium for use in high density recording February 27, 2001
An optical recording medium of phase change type is provided. In this medium, cross erase is sufficiently suppressed and favorable recording/reproducing properties are realized in high density recording, and in particular, when the track pitch is less than 0.7 .mu.m. The medium compr
4642270 Magnetic recording medium February 10, 1987
In a magnetic recording medium comprising a non-magnetic substrate and a magnetic thin film formed on the surface thereof and including at least two layers, the upper layer in the form of a crystalline cobalt-chromium alloy layer suitable for perpendicular magnetization is placed on the
4636448 Magnetic recording medium January 13, 1987
In a magnetic recording medium particularly for perpendicular magnetization comprising a non-magnetic substrate and a magnetic thin film formed on the surface thereof and including at least two layers, a lower layer with low coercive force and high permeability, for example, of permalloy
4618542 Magnetic thin film October 21, 1986
A magnetic thin film comprised of at least one, usually two magnetic metals selected from iron, nickel, and cobalt is vapor phase grown on a substrate, for example, polyimide film by introducing chemical compounds of the metals in vapor form, a reducing gas, and optionally, an oxidizing










 
 
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