Patent application number | Description | Published |
20100172002 | OPTICAL PICKUP APPARATUS, REPRODUCTION APPARATUS, AND REPRODUCTION METHOD - An optical pickup apparatus includes: a light source to irradiate light onto a hologram recording medium onto which information is recorded by interference fringes of signal light and reference light; a spatial light modulation portion to generate the reference light by performing a spatial light modulation on the light from the light source; and an optical system to irradiate the reference light onto the hologram recording medium via a relay lens system and an objective lens and guide reproduction light obtained from the hologram recording medium in accordance with the irradiation of the reference light to an image pickup device via the objective lens and the relay lens system, the optical system being provided with, in an optical path between the relay lens system and the image pickup device, an angle permselective device that selectively transmits light with an incidence angle of a predetermined angle or less. | 07-08-2010 |
20100182662 | RECORDING/REPRODUCTION METHOD AND HOLOGRAM RECORDING MEDIUM - A recording/reproduction method of performing recording/reproduction of a hologram by illuminating a hologram recording medium, which has a recording layer in which information is recorded by interference fringes between signal light and reference light, with the signal light and/or the reference light as recording/reproduction light through an objective lens includes the step of: setting a focal position of the recording/reproduction light such that a distance from a surface of the hologram recording medium to the focal position of the recording/reproduction light is larger than a distance from the surface to a lower-layer-side surface of the recording layer and illuminating the hologram recording medium including an angle-selective reflective layer, which is formed below the recording layer and has a selective light reflection/transmission characteristic depending on a light incidence angle, with the recording/reproduction light the focal position of which has been set. | 07-22-2010 |
20100182663 | LIGHT ILLUMINATING APPARATUS AND LIGHT ILLUMINATING METHOD - There is provided a light illuminating apparatus including: a light source allowing light to illuminate a hologram-recording medium having a recording layer, where information is recorded by an interference fringe of a signal light and a reference light, and a cover layer on an upper-layer side thereof; a spatial light-modulator performing spatial light-modulation on the light from the light source to generate the signal light and/or the reference light; and a light illuminating unit allowing the light, which is subject to the spatial light-modulation by the spatial light-modulator, as a recording/reproduced light to illuminate the hologram-recording medium through an objective lens, wherein a focus position of the recording/reproduced light is set so that a distance from a surface of the hologram-recording medium to the focus position of the recording/reproduced light is smaller than a distance from the surface to a lower-layer side surface of the recording layer. | 07-22-2010 |
20100225985 | REPRODUCING DEVICE AND REPRODUCING METHOD - A reproducing device including a light source that emits light for reproducing recorded information to a hologram recording medium subjected to recording of information by interference fringes of signal light and reference light, a light irradiating unit that generates the reference light for obtaining a reproduced image according to the recorded information and DC light having uniform intensity and phase, and irradiates the hologram recording medium with both the reference light and the DC light and with only the DC light, a light receiving unit that performs light-reception for the DC light and the reproduced image, and performs light-reception for the DC light, and a difference calculating unit that calculates a difference between an image signal obtained based on a light-reception result of the reproduced image and the DC light, and an image signal obtained based on a light-reception result of the DC light. | 09-09-2010 |
20100245955 | LIGHT IRRADIATION DEVICE AND CONTROL METHOD - A light irradiation device includes: a focus servo control unit including a light source, a spatial light modulating unit, and a light irradiating unit, for focus servo control so that the ideal focal position of light via an objective lens is such that distance between an ideal focal position and a hologram recording medium surface is smaller than distance from the surface to the lower layer side face of the recording layer, and the focal position of light via the objective lens is constant at the ideal focal position; an objective-lens/relay-lens distance adjusting unit to adjust distance between the objective lens and a relay lens close to the objective lens; a light reception unit to receive marker light; and a constant distance control unit to control the objective-lens/relay-lens distance adjusting unit based on error between the ideal position of the marker light, and the actual position of the marker light. | 09-30-2010 |
20100265808 | HOLOGRAM DEVICE, TILT DETECTION METHOD, AND TILT CORRECTION METHOD - A hologram device includes: a light source for applying light to a hologram recording medium having a recording layer in which information recording is performed by interference fringes between signal light and reference light; a spatial modulation unit that generates the signal light and/or the reference light and generates a marker light in a predetermined position within an incident surface of the light from the light source by performing spatial light modulation on the light from the light source; a light applying unit that applies the light subjected to spatial light modulation by the spatial light modulation unit to the hologram recording medium via an objective lens; a light receiving unit that receives the light applied via the objective lens through the hologram recording medium; and a tilt detection unit that obtains a tilt error signal representing an error from an ideal angle of a tilt angle as an incident angle of the applied light via the objective lens to an information recording surface of the hologram recording medium based on a result of detection of an error between an ideal light reception position of the marker light in the light receiving unit and a real light reception position of the marker light by the light receiving unit. | 10-21-2010 |
Patent application number | Description | Published |
20080258192 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF - This disclosure concerns a semiconductor device comprising an insulating film provided on a semiconductor substrate; a lower contact formed in the insulating film; a ferroelectric capacitor including a first lower electrode provided on the lower contact and connected to the lower contact, a second lower electrode provided on the first lower electrode and made of SRO (Strontium Ruthenium Oxide), a ferroelectric film including crystals, and an upper electrode provided on the ferroelectric film, grain diameters of the crystals being set to 30 nm to 150 nm by forming the ferroelectric film on the second lower electrode; and a wiring connected to the upper electrode. | 10-23-2008 |
20080258193 | FERROELECTRIC MEMORY AND METHOD OF MANUFACTURING THE SAME - A ferroelectric memory that stores information by using a hysteresis characteristic of a ferroelectric, has a semiconductor substrate; a lower electrode formed above said semiconductor substrate; a ferroelectric film formed on said lower electrode; and an upper electrode formed on said ferroelectric film, wherein said upper electrode includes an AO | 10-23-2008 |
20090091876 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THEREOF - A semiconductor device has a semiconductor substrate, and a capacitor which is provided on the upper side of the semiconductor substrate and composed of a lower electrode, an upper electrode and a dielectric film, the dielectric film being placed in between the lower electrode and the upper electrode, the lower electrode including a noble metal film, and a plurality of conductive oxide films formed in an islands arrangement on the noble metal film. | 04-09-2009 |
20090127603 | SEMICONDUCTOR MEMORY DEVICE AND MANUFACTURING METHOD THEREOF - A semiconductor memory device according to an embodiment comprises: a field-effect transistor formed on a substrate; an interlayer insulation film formed on the substrate on which the field-effect transistor is formed; and a ferroelectric capacitor including a lower electrode connected via a plug to one of source/drain regions of the field-effect transistor, and formed on the interlayer insulation film, a ferroelectric film having a perovskite crystal structure used as a basic structure, and an upper electrode, wherein a lattice matching region in which a lattice of the ferroelectric film is matched with a lattice of the lower electrode is formed in a range of a predetermined thickness of the ferroelectric film from the lower electrode. | 05-21-2009 |
20090267123 | SEMICONDUCTOR DEVICE - A semiconductor device includes: a semiconductor substrate; a plurality of transistors on the semiconductor substrate, each of the transistors has a source and drain region; an interlayer insulating film on the semiconductor substrate and the plurality of transistors; and at least three capacitors on the interlayer insulation film, each of them has a top electrode, a bottom electrode and an insulating film interposed therebetween; wherein the 1st and 2nd capacitors have an shared electrode, with the top electrodes of the 1st and 2nd capacitors, which has a 1st longer direction, the 2nd and 3rd capacitors have an shared electrode, with the bottom electrodes of the 2nd and 3rd capacitors, which has a 2nd longer direction different from the 1st direction. | 10-29-2009 |
20100330769 | Semiconductor device and method of manufacturing thereof - A semiconductor device has a semiconductor substrate, and a capacitor which is provided on the upper side of the semiconductor substrate and composed of a lower electrode, an upper electrode and a dielectric film, the dielectric film being placed in between the lower electrode and the upper electrode, the lower electrode including a noble metal film, and a plurality of conductive oxide films formed in an islands arrangement on the noble metal film. | 12-30-2010 |
20110140238 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF - According to an embodiment, there is provided a method for manufacturing a semiconductor device having a ferroelectric capacitor including a lower electrode, an upper electrode, and a dielectric film provided between the lower electrode and the upper electrode. The method includes firstly forming a conductive film on the lower electrode. Next, it includes forming an SRO film on the conductive film. Then, it includes performing a first thermal treatment crystallizing the SRO film. Then, it includes forming a first PZT film on the SRO film by the sputtering method and performing a second thermal treatment crystallizing the first PZT film. Then, it includes forming the second PZT film on the first PZT film by the CVD method. | 06-16-2011 |
20120007196 | MAGNETORESISTIVE RANDOM ACCESS MEMORY AND METHOD OF MANUFACTURING THE SAME - According to one embodiment, a magnetoresistive random access memory includes a magnetoresistive element in a memory cell, the magnetoresistive element including a first metal magnetic layer, a second metal magnetic layer, and an insulation layer interposed between the first and second metal magnetic layers. An area of each of the first and second metal magnetic layers is smaller than an area of the insulation layer. | 01-12-2012 |
20120112297 | MAGNETIC RANDOM ACCESS MEMORY AND METHOD OF FABRICATING THE SAME - According to one embodiment, a magnetic random access memory including a magneto resistive element, including a free layer including first metal atoms, a first metal layer on the free layer and including a first metal, a first interfacial magnetic layer on the first metal layer, a nonmagnetic layer provided on the first interfacial magnetic layer, a second interfacial magnetic layer on the nonmagnetic layer, a second metal layer on the second interfacial magnetic layer and including a second metal, and a pinned layer provided on the second metal layer and including the second metal atoms. | 05-10-2012 |
20120217476 | SEMICONDUCTOR MEMORY DEVICE AND METHOD FOR MANUFACTURING THE SAME - According to one embodiment, a memory device with magnetroresistive effect element is disclosed. The element includes first metal magnetic film (MMF) with nonmagnetic element and axis of easy magnetization perpendicular (EMP), first insulating film, first intermediate magnetic film between the first MMF and the first insulating film, second MMF on the first insulating film and including nonmagnetic elements, the second MMF having axis of EMP, second intermediate magnetic film between the first insulating film and the second MMF, and diffusion preventing film including metal nitride having barrier property against diffusion of the nonmagnetic elements between the first MMF and the first intermediate magnetic film. | 08-30-2012 |
20120241879 | MAGNETIC RANDOM ACCESS MEMORY AND METHOD OF FABRICATING THE SAME - According to one embodiment, a semiconductor device, includes a magneto resistive element including a first magnetic layer, a first interface magnetic layer, a nonmagnetic layer, a second interface magnetic layer and a second magnetic layer as a stacked structure in order; and a metal layer including first metal atoms, second metal atoms and boron atoms, the metal layer being provided at least one region selected from under the first magnetic, between the first magnetic layer and the first interface magnetic layer, between the second interface magnetic layer and the second magnetic layer, and upper the second magnetic layer. | 09-27-2012 |
20120326251 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a semiconductor memory device includes plural magneto-resistance elements being two-dimensionally arrayed on a semiconductor substrate. In the semiconductor memory device, each of the magneto-resistance elements includes: a first magnetic layer formed on the semiconductor substrate; a non-magnetic layer formed on the first magnetic layer; and a second magnetic layer formed on the non-magnetic layer, and an insulating film buried between the magneto-resistance elements adjacent to each other, a powder made of a metallic material or a magnetic material being dispersed in the insulating film. | 12-27-2012 |
20120326252 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a semiconductor memory device includes plural magneto-resistance elements. In the semiconductor memory device, each of the magneto-resistance elements includes: a first magnetic layer formed on a semiconductor substrate, the first magnetic layer having an easy axis of magnetization perpendicular to a film surface thereof; a non-magnetic layer formed on the first magnetic layer; a second magnetic layer formed on the non-magnetic layer, the second magnetic layer having an easy axis of magnetization perpendicular to a film surface thereof; and a sidewall film provided so as to cover a sidewall of each of the magneto-resistance elements with a protective film interposed therebetween, the sidewall film providing a tensile stress to the magneto-resistance element along the easy axis of magnetization. | 12-27-2012 |
20130001715 | MAGNETORESISTIVE ELEMENT AND MANUFACTURING METHOD OF THE SAME - In accordance with an embodiment, a magnetoresistive element includes a lower electrode, a first magnetic layer on the lower electrode, a first interfacial magnetic layer on the first magnetic layer, a nonmagnetic layer on the first interfacial magnetic layer, a second interfacial magnetic layer on the nonmagnetic layer, a second magnetic layer on the second interfacial magnetic layer; and an upper electrode layer on the second magnetic layer. Either the first magnetic and interfacial magnetic layers or the second magnetic and interfacial magnetic layers constitute a storage layer. The other layers of the first magnetic and interfacial magnetic layers and the second magnetic and interfacial magnetic layers constitute a reference layer. The lower electrode includes an alloy layer or mixture layer of a precious metal and a transition element or a rare earth element, or comprises a conductive oxide layer. | 01-03-2013 |
20130001716 | MAGNETORESISTIVE ELEMENT AND MANUFACTURING METHOD OF THE SAME - In accordance with an embodiment, a magnetoresistive element includes a lower electrode, a first magnetic layer on the lower electrode, a first diffusion prevention layer on the first magnetic layer, a first interfacial magnetic layer on the first metal layer, a nonmagnetic layer on the first interfacial magnetic layer, a second interfacial magnetic layer on the nonmagnetic layer, a second diffusion prevention layer on the second interfacial magnetic layer, a second magnetic layer on the second diffusion prevention layer, and an upper electrode layer on the second magnetic layer. The ratio of a crystal-oriented part to the other part in the second interfacial magnetic layer is higher than the ratio of a crystal-oriented part to the other part in the first interfacial magnetic layer. | 01-03-2013 |
20130005148 | METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE - According to one embodiment, a method of manufacturing a semiconductor device, the method includes forming a pillar on a base layer, forming a insulating layer on the base layer to cover the pillar by using GCIB method, where a lowermost portion of an upper surface of the insulating layer is lower than an upper surface of the pillar, and polishing the insulating layer and the pillar to expose a head of the pillar by using CMP method, where an end point of the polishing is the lowermost portion of the upper surface of the insulating layer. | 01-03-2013 |
20130056349 | SPUTTERING TARGET AND METHOD OF MANUFACTURING MAGNETIC MEMORY USING THE SAME - Provided are a sputtering target including a target main body | 03-07-2013 |
20140042568 | NONVOLATILE SEMICONDUCTOR MEMORY DEVICE - A nonvolatile semiconductor memory device is provided with an MRAM chip including a magnetoresistive effect element having a reference layer whose magnetizing direction is set, a memory layer whose magnetizing direction is variable, and a nonmagnetic layer between these layers, and an enclosure having a thermal insulation area that covers part or the whole of the MRAM chip and prevents thermal fluctuation of the magnetization of the reference layer or memory layer. | 02-13-2014 |
20140070289 | FERROELECTRIC MEMORY AND MANUFACTURING METHOD THEREOF - According to one embodiment, a ferroelectric memory includes a gate insulation film formed on a semiconductor substrate, a ferroelectric film formed on the gate insulation film, and a control electrode formed on the ferroelectric film. The ferroelectric film is a film containing a metal, which is hafnium or zirconium, and oxygen, and contains an element other than the metal at a concentration lower than a concentration of the metal. | 03-13-2014 |
20140070290 | FERROELECTRIC MEMORY AND MANUFACTURING METHOD OF THE SAME - According to one embodiment, a ferroelectric memory includes a semiconductor layer, an interfacial insulating film formed on the semiconductor layer, a ferroelectric film formed on the interfacial insulating film, and a gate electrode formed on the ferroelectric film, wherein the ferroelectric film is a film which includes a metal that is hafnium (Hf) or zirconium (Zr) and oxygen as the main components and to which an element selected from the group consisting of silicon (Si), magnesium (Mg), aluminum (Al). | 03-13-2014 |
20140085971 | MAGNETORESISTIVE EFFECT ELEMENT - According to one embodiment, a magnetoresistive effect element includes the following structure. A first ferromagnetic layer has a variable magnetization direction. A second ferromagnetic layer has an invariable magnetization direction. A tunnel barrier layer is formed between the first and second ferromagnetic layers. An energy barrier between the first ferromagnetic layer and the tunnel barrier layer is higher than an energy barrier between the second ferromagnetic layer and the tunnel barrier layer. The second ferromagnetic layer contains a main component and an additive element. The main component contains at least one of Fe, Co, and Ni. The additive element contains at least one of Mg, Al, Ca, Sc, Ti, V, Mn, Zn, As, Sr, Y, Zr, Nb, Cd, In, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, and W. | 03-27-2014 |
20140117478 | SEMICONDUCTOR MEMORY DEVICE AND METHOD FOR MANUFACTURING THE SAME - According to one embodiment, a memory device with magnetroresistive effect element is disclosed. The element includes first metal magnetic film (MMF) with nonmagnetic element and axis of easy magnetization perpendicular (EMP), first insulating film, first intermediate magnetic film between the first MMF and the first insulating film, second MMF on the first insulating film and including nonmagnetic elements, the second MMF having axis of EMP, second intermediate magnetic film between the first insulating film and the second MMF, and diffusion preventing film including metal nitride having barrier property against diffusion of the nonmagnetic elements between the first MMF and the first intermediate magnetic film. | 05-01-2014 |
20140269033 | MAGNETIC MEMORY - According to one embodiment, a magnetic memory includes magnetoresistive effect elements each including a first magnetic layer, a tunnel barrier layer, and a second magnetic layer which are successively stacked, and a ferroelectric capacitor provided above the magnetoresistive effect elements via an insulating layer, and including a lower electrode, a ferroelectric film, and an upper electrode which are successively stacked. | 09-18-2014 |
20140284592 | MAGNETORESISTIVE EFFECT ELEMENT AND MANUFACTURING METHOD THEREOF - According to one embodiment, a magnetoresistive effect element includes a first ferromagnetic layer, a tunnel barrier provided on the first ferromagnetic layer, and a second ferromagnetic layer provided on the tunnel barrier. The tunnel barrier includes a nonmagnetic mixture containing MgO and a metal oxide with a composition which forms, in a solid phase, a single phase with MgO. | 09-25-2014 |
20140284732 | MAGNETORESISTIVE EFFECT ELEMENT AND MANUFACTURING METHOD THEREOF - According to one embodiment, a magnetoresistive effect element includes a first ferromagnetic layer, a tunnel barrier formed on the first ferromagnetic layer, and a second ferromagnetic layer formed on the tunnel barrier layer. The tunnel barrier includes a nonmagnetic oxide having a spinel structure. Oxides forming the spinel structure are combined such that a single phase is formed by a solid phase in a component ratio region including a component ratio corresponding to the spinel structure and having a width of not less than 2%. | 09-25-2014 |
Patent application number | Description | Published |
20090243010 | THINFILM DEPOSITION METHOD, THINFILM DEPOSITION APPARATUS, AND THINFILM SEMICONDUCTOR DEVICE - A substrate holding unit, a plasma treatment chamber, and a nanoparticle supplying chamber are housed in a single chamber. The substrate holding unit holds a substrate. The plasma treatment chamber includes a gas passage for introducing a source gas to a vicinity of the substrate and a plasma generating unit that generates a plasma from the source gas. The nanoparticle supplying chamber includes a spraying member for spraying a nanoparticle-containing medium onto a surface of the substrate. | 10-01-2009 |
20100088318 | INFORMATION SEARCH SYSTEM, METHOD, AND PROGRAM - Disclosed is a system in which an index registration unit registers an index, which will be used for search processing, as a partitioned index which is partitioned on a time series basis, and a search means reads indexes older than a specified point in time, which is used as a search base point, to perform search processing, thereby searching for information based on a point in time in the past. | 04-08-2010 |
20100094803 | DATA MANAGEMENT APPARATUS, METHOD AND PROGRAM - Disclosed is a data management apparatus comprising a message transfer/analysis unit that receives an object data access request from a client and returns a response; an object metadata storage unit that stores, as metadata, a set of ancillary information on data for an object and a data area corresponding to the ancillary information; an object metadata management unit that performs reading, updating, and registration processing for the metadata; a data conversion unit that sends the data access request to a data access unit, extracts object data; and a data access unit that sends a data access command, specified by the data conversion unit, to a file server or a database server and sends response data, received from the file server or the database server, to the data conversion unit. | 04-15-2010 |
20100148869 | POWER AMPLIFICATION CIRCUIT HAVING TRANSFORMER - In order to realize a wider bandwidth of a frequency characteristic of a power amplification circuit, outputs of differential push-pull amplifiers which are matched at respectively different frequencies are combined together by secondary inductors, and the combined signal is outputted. | 06-17-2010 |
20100148872 | POWER AMPLIFIER HAVING TRANSFORMER - A power amplifier amplifying and compositing differential signals and capable of suppressing harmonics is provided. The power amplifier includes first amplifiers amplifying a first input signal and a second input signal, which are differential signals, a first coil receiving the first input signal and the second input signal amplified by the first amplifiers, a second coil magnetically coupled with the first coil and outputting a composite signal of the amplified first input signal and second input signal, a third coil magnetically coupled with the second coil, and a first capacitor coupled between both ends of the third coil, wherein one end of the first capacitor is coupled to a ground node. | 06-17-2010 |
20110063028 | POWER AMPLIFIER - A power amplifier comprises a plurality of primary inductors provided on a substrate in a circular geometry as a whole; a plurality of amplifier pairs; a secondary inductor; and a connection wiring. Each amplifier pair is coupled to two ends of a corresponding primary inductor, and amplifies and output to the corresponding primary inductor a pair of first and second signals given as differential input signals, respectively. The secondary inductor is provided adjacent to the primary inductors in a circular geometry, further combines and outputs signals made by combining first and second signals in each primary inductor. The connection wiring is provided inside the primary inductors on the substrate and electrically couples middle points of respective primary inductors with each other. | 03-17-2011 |
20120133431 | POWER AMPLIFICATION CIRCUIT HAVING TRANSFORMER - In order to realize a wider bandwidth of a frequency characteristic of a power amplification circuit, outputs of differential push-pull amplifiers which are matched at respectively different frequencies are combined together by secondary inductors, and the combined signal is outputted. | 05-31-2012 |
20130009709 | POWER AMPLIFIER - A power amplifier comprises a plurality of primary inductors provided on a substrate in a circular geometry as a whole; a plurality of amplifier pairs; a secondary inductor; and a connection wiring. Each amplifier pair is coupled to two ends of a corresponding primary inductor, and amplifies and output to the corresponding primary inductor a pair of first and second signals given as differential input signals, respectively. The secondary inductor is provided adjacent to the primary inductors in a circular geometry, further combines and outputs signals made by combining first and second signals in each primary inductor. The connection wiring is provided inside the primary inductors on the substrate and electrically couples middle points of respective primary inductors with each other. | 01-10-2013 |
20130013570 | FILE STORAGE APPARATUS, DATA STORING METHOD, AND DATA STORING PROGRAM - An extraction unit extracts, in accordance with a format of a file which the client apparatus requests a file storage apparatus to store to storing means, data possibly made into independent data as an independent file from the file which is data in a portion that can be stored to the storing means. A duplicate determination unit determines whether the storing means stores data matching the data possibly made into independent data that is extracted by the extraction unit or remaining data which are data obtained by deleting the data possibly made into independent data from the file. A storing processing unit stores, to the storing means, the data possibly made into independent data or the remaining data which do not match data stored to the storing means, on the basis of the determination result made by the duplicate determination unit. A restoring unit restores a file by connecting the remaining data and the data possibly made into independent data which are stored to the storing means by the storing processing unit, in accordance with a request made by the client apparatus. | 01-10-2013 |
20130069723 | POWER AMPLIFICATION CIRCUIT HAVING TRANSFORMER - In order to realize a wider bandwidth of a frequency characteristic of a power amplification circuit, outputs of differential push-pull amplifiers which are matched at respectively different frequencies are combined together by secondary inductors, and the combined signal is outputted. | 03-21-2013 |
20130080403 | FILE STORAGE APPARATUS, FILE STORAGE METHOD, AND PROGRAM - A file storage apparatus comprises: duplication determination unit that determines whether file supplied from client apparatus and file stored in storage unit coincide with each other in same format, and stores the file supplied from client apparatus in the storage unit if the files do not coincide in the same format; and storage management unit that associates, if duplication determination unit determines that the files coincide in the same format, format of the file supplied from the client apparatus with the file stored in the storage unit, reads file stored in the storage unit in response to file read request from client apparatus, converts, if format associated with the read file exists, the read file into the format, and provides the converted file. | 03-28-2013 |
20130218851 | STORAGE SYSTEM, DATA MANAGEMENT DEVICE, METHOD AND PROGRAM - A storage system is characterized in that the storage system includes duplication-determination-unit determining means for determining a duplication determination unit, which is a unit to be used in determining duplications of data, on the basis of a duplication generation rate computed for each of a plurality of data division units obtained as a result of division of data stored in a storage device, and duplication eliminating means for carrying out processing to eliminate duplications of the data stored in the storage device on the basis of the duplication determination unit determined by the duplication-determination-unit determining means. | 08-22-2013 |
20150347516 | DISTRIBUTED STORAGE DEVICE, STORAGE NODE, DATA PROVIDING METHOD, AND MEDIUM - A distributed storage device according to the present invention includes: a plurality of storage nodes, the plurality of storage nodes includes: a data storage unit that accumulates stream data output from a device; a first time frame generation unit that generates a time frame synchronized with another storage node and associates a data element included in stream data accumulated in the data storage unit with one of time frames; a data selection unit that selects a data element associated with a predetermined time frame from the stream data accumulated in the data storage unit, based on an access request from a client terminal; and a data transmission unit that transmits a data element selected by the data selection unit to the client terminal. | 12-03-2015 |
20150378856 | STORAGE SYSTEM, STORAGE DEVICE, CONTROL METHOD AND CONTROL PROGRAM OF STORAGE DEVICE, MANAGEMENT DEVICE, AND CONTROL METHOD AND STORAGE MEDIUM - Convenience of data access is to be secured. A storage system includes two or more storage devices that store original data or copy data of the original data, and a management device that identifies a first storage device for storing the original data and a second storage device for storing the copy data. The storage devices each include two or more data storage units different in accessibility, a data copy control unit that controls generation of the copy data, an access frequency control unit that pseudo-conforms the access frequency to the copy data to the access frequency to the original data, and a data storage location control unit that determines the storage location of the original data and the copy data based on the access frequency and accessibility. | 12-31-2015 |
Patent application number | Description | Published |
20130342139 | POWER CONVERTING DEVICE, MOTOR DRIVING DEVICE, AND REFRIGERATING AND AIR-CONDITIONING APPARATUS - A power converting device includes a rectifying circuit that rectifies voltage of an alternating-current power supply; smoothing means that smoothes output voltage from the rectifying circuit; short-circuiting means that is disposed more closely to the alternating-current power supply than the smoothing means and that short-circuits the alternating-current power supply and controls at least one of electric current and voltage; a reactor that is disposed more closely to the alternating-current power supply than the short-circuiting means; one or more backflow preventing elements that prevent electric current from flowing backward from a load side toward the alternating-current power supply; commutating means for performing a commutation operation for causing electric current to flow toward a different path that is connected in parallel with the one or more backflow preventing elements; malfunction detecting means for detecting a malfunction of the commutating means; and switching control means that performs operation control of the commutating means in accordance with detection by the malfunction detecting means. | 12-26-2013 |
20140204491 | BACKFLOW PREVENTING MEANS, POWER CONVERTING DEVICE, AND REFRIGERATING AND AIR-CONDITIONING APPARATUS - For example, backflow preventing means is provided, which reduces a recovery electric current occurring in the event of backflow of an electric current so as to ensure high efficiency, high reliability, etc. The backflow preventing means includes a backflow preventing element, such as a rectifying element, which is connected between an alternating-current power supply and a load and prevents the electric current from flowing backward from the load toward the alternating-current power supply; and commutating means for performing a commutation operation for causing the electric current to flow toward a different path that is connected in parallel with the backflow preventing element, whereby a conduction loss and a loss caused by the electric current can be reduced. | 07-24-2014 |
20140339900 | POWER SUPPLY SWITCHING DEVICE AND SWITCH BOARD - A power supply switching device and switch board checks whether or not a primary-side voltage of a remote shutoff breaker and a secondary-side voltage thereof become a rated voltage after a commercial power system is recovered from a blackout. Next, when both primary-side voltage and secondary-side voltage become the rated voltage, a contactor is actuated to interconnect a home power system with the commercial power system. Hence, charging of the home power system without causing a user to notice such a charging upon recovery of the commercial power system from a blackout can be prevented. As a result, the safety for the user can be ensured. | 11-20-2014 |
20150028780 | AIR CONDITIONER - An air conditioner includes: an outdoor fan provided in an outdoor unit; a permanent magnet synchronous motor that drives the outdoor fan; an inverter that uses a DC power source as a power source and applies a voltage to the permanent magnet synchronous motor; an inverter control means that controls the output voltage of the inverter; and a shunt resist connected between the DC power source and the inverter. If the outdoor fan is rotating due to an external force while the inverter is stopped, the inverter control means causes the inverter to operate using a brake sequence that brakes the rotation of the outdoor fan, and then causes the inverter to operate using a drive sequence that power-drives the outdoor fan. | 01-29-2015 |
20150288201 | CHARGING/DISCHARGING DEVICE - A charging/discharging device includes a charging/discharging connector that electrically connects a storage battery and the charging/discharging device, a cable that is connected to the charging/discharging connector at one end and is connected to the charging/discharging device at the other end, a power conversion unit, a control unit that controls an operation of the power conversion unit, and an abnormality detection unit that outputs an abnormality detection signal for stopping an operation of the power conversion unit to at least any of the control unit and the power conversion unit, when an output from a comparator and an ON signal from the control unit are input to an AND circuit. | 10-08-2015 |
20150381062 | POWER CONVERSION APPARATUS AND REFRIGERATION AIR-CONDITIONING APPARATUS - Provided is a power converter for converting electric power between a power source and a load, including: a boosting device including a boost rectifier configured to prevent a backflow of a current from the load side to the power source side, the boosting device being configured to change a voltage of electric power supplied from the power source to a predetermined voltage; a commutation device configured to perform a commutation operation of directing a current flowing through the boosting device to another path; and a controller configured to perform control related to the voltage change of the boosting device and control related to the commutation operation of the commutation device, in which the commutation device is configured to flow, when the commutation device performs the commutation operation, a current generating a voltage causing reverse recovery of the boost rectifier to the commutation device side. | 12-31-2015 |
20160049783 | BACKFLOW PREVENTING DEVICE, POWER CONVERSION DEVICE, AND REFRIGERATION AIR-CONDITIONING APPARATUS - A backflow preventing device includes a backflow preventing element connected between a power source and a load, for preventing a backflow of a current from the load side to the power source side, a commutation device configured to perform a commutation operation of causing a current to flow through an other path connected in parallel to the backflow preventing element, and a controller configured to change a pulse width of a commutation drive signal for controlling the commutation device to perform the commutation operation based on a current flowing through the backflow preventing element, and transmitting the commutation drive signal having the changed pulse width to the commutation device. The controller transmits the pulse to the commutation device only for a necessary time period so that the commutation device performs the commutation operation, to thereby reduce electric power relating to the commutation operation not contributing to the power conversion. | 02-18-2016 |
20160056715 | POWER CONVERSION APPARATUS AND REFRIGERATION AIR-CONDITIONING APPARATUS - A power converter for converting electrical power from a power source to a load, including: a boosting device including a boost rectifier configured to prevent a backflow of a current from the load to the power source, the boosting device being configured to change a voltage of electrical power from the power source to a predetermined voltage; and a commutation device including: a commutation operation device configured to perform a commutation operation of directing a current flowing through the boosting device to an other path; and a commutation rectifier including a plurality of rectifiers and connected in series on the other path, the commutation rectifier being configured to rectify a current relating to commutation, thereby reducing a capacitance component. | 02-25-2016 |
Patent application number | Description | Published |
20120020474 | RECORDING DEVICE, CONTROLLER, CONTROL METHOD OF RECORDING DEVICE - According to some embodiments, there is provided a recording device. The recording device includes: a recording medium having a plurality of sectors; a first writing module configured to write, on a first sector of the plurality of sectors, a first data encrypted using a first encryption key and first encryption key information indicative of the first encryption key; and a re-encrypting module configured to: read the first data from the recording medium; decrypt the first data using the first encryption key to generate decrypted first data; encrypt the decrypted first data using a second encryption key to generate encrypted second data; and write, on the first sector, the encrypted second data and second encryption key information indicative of the second encryption key. | 01-26-2012 |
20120072735 | STORAGE DEVICE, PROTECTION METHOD, AND ELECTRONIC DEVICE - According to one embodiment, a storage device encrypts/decrypts data with an encryption key to write/read the data to/from the storage area. In the storage device, an elapsed time counter starts counting triggered by turning on of the storage device. A receiver receives a command containing a password and time information from a host device. The time information indicates current date and time. A calculator calculates elapsed time from last command input to current command input based on the time information and a counter value. An adder adds the elapsed time to time information contained in a command received last time. A time information determination module determines the consistency of the time information. A disabling module disables the encryption key if the time information is not consistent. An authentication module authenticates the password if the time information is consistent and allows access to the storage area if the password is successfully authenticated. | 03-22-2012 |
20120072736 | MEMORY DEVICE, MEMORY SYSTEM, AND AUTHENTICATION METHOD - According to one embodiment, a memory device includes a third partial key write module, an encryption key write module, and a decryption module. The third partial key write module is configured to combine a second partial key received from the current host device with the first partial key in the partial key memory device and to write a generated third partial key into the volatile memory after the device authentication. The encryption key write module is configured to combine the third partial key with the second user authentication information and to write a generated encryption key into the volatile memory after the user authentication. The decryption module is configured to decrypt the encrypted data based on the encryption key in the volatile memory based on a read request received from the current host device and to output obtained data to the current host device when the user authentication has succeeded. | 03-22-2012 |
20120137139 | DATA STORAGE DEVICE, DATA CONTROL DEVICE AND METHOD FOR ENCRYPTING DATA - According to one embodiment, a data storage device includes an encryption module, a write module, and a controller. The encryption module encrypts or decrypts data. The write module writes, on a storage medium, encrypted data of data received from a host, the encrypted data being encrypted by the encrypting module. The controller causes the encryption module to encrypt data received from a host and to transfer the encrypted data to the write module through a buffer memory, during normal encryption process, and to re-encrypt the data recorded on the storage medium, during re-encryption process. During the re-encryption process, the controller causes the encryption module to decrypt the encrypted data read from the storage medium, to store the decrypted data into the buffer memory, and to re-encrypt the decrypted data from the buffer memory by the encryption module and to transfer the re-encrypted data to the write module. | 05-31-2012 |
20120260023 | STORAGE DEVICE, PROTECTION METHOD, AND ELECTRONIC APPARATUS - According to one embodiment, a storage device includes, when power is supplied to a storage unit, counting of an elapsed time is started. If a command is input from a host device, and the elapsed time from input of a previous command to input of a current command is calculated based on time information clocked by the host device and on a counter value counted until the corresponding command is input. Matching of the time information is determined based on a temporal relation between the adding result of adding the calculated elapsed time to the time information included in the previous command and the time information included in the current command. When the mismatching is determined, data in the storage unit is invalidated. | 10-11-2012 |
20120260349 | STORAGE DEVICE, STORAGE SYSTEM, AND AUTHENTICATION METHOD - According to one embodiment, a storage device that has a nonvolatile semiconductor memory includes an authentication information storage unit that previously stores first apparatus authentication information to authenticate an authorized host device and first user authentication information to authenticate an authorized user. The storage device executes apparatus authentication on the basis of second apparatus authentication information received from a newly connected host device and the first apparatus authentication information in the authentication information storage unit and executes an invalidation process of user data stored in the nonvolatile semiconductor memory, when the apparatus authentication is failed. | 10-11-2012 |
20130275775 | STORAGE DEVICE, PROTECTION METHOD, AND ELECTRONIC DEVICE - According to one embodiment, a storage device encrypts/decrypts data with an encryption key to write/read the data to/from the storage area. In the storage device, an elapsed time counter starts counting triggered by turning on of the storage device. A receiver receives a command containing a password and time information from a host device. The time information indicates current date and time. A calculator calculates elapsed the from last command input to current command input based on the time information and a counter value. An adder adds the elapsed time to time information contained in a command received last time. A time information determination module determines the consistency of the time information. A disabling module disables the encryption key if the time information is not consistent. An authentication module authenticates the password if the time information is consistent and allows access to the storage area if the password is successfully authenticated. | 10-17-2013 |
20130290736 | DATA STORAGE DEVICE, DATA CONTROL DEVICE AND METHOD FOR ENCRYPTING DATA - According to one embodiment, a data storage device includes an encryption module, a write module, and a controller. The encryption module encrypts or decrypts data. The write module writes, on a storage medium, encrypted data of data received from a host, the encrypted data being encrypted by the encrypting module. The controller causes the encryption module to encrypt data received from a host and to transfer the encrypted data to the write module through a buffer memory, during normal encryption process, and to re-encrypt the data recorded on the storage medium, during re-encryption process. During the re-encryption process, the controller causes the encryption module to decrypt the encrypted data read from the storage medium, to store the decrypted data into the buffer memory, and to re-encrypt the decrypted data from the buffer memory by the encryption module and to transfer the re-encrypted data to the write module. | 10-31-2013 |
20140298448 | STORAGE DEVICE, STORAGE SYSTEM, AND AUTHENTICATION METHOD - According to one embodiment, a storage device that has a nonvolatile semiconductor memory includes an authentication information storage unit that previously stores first apparatus authentication information to authenticate an authorized host device and first user authentication information to authenticate an authorized user. The storage device executes apparatus authentication on the basis of second apparatus authentication information received from a newly connected host device and the first apparatus authentication information in the authentication information storage unit and executes an invalidation process of user data stored in the nonvolatile semiconductor memory, when the apparatus authentication is failed. | 10-02-2014 |
20150235020 | STORAGE DEVICE, STORAGE SYSTEM, AND AUTHENTICATION METHOD - According to one embodiment, a storage device that has a nonvolatile semiconductor memory includes an authentication information storage unit that previously stores first apparatus authentication information to authenticate an authorized host device and first user authentication information to authenticate an authorized user. The storage device executes apparatus authentication on the basis of second apparatus authentication information received from a newly connected host device and the first apparatus authentication information in the authentication information storage unit and executes an invalidation process of user data stored in the nonvolatile semiconductor memory, when the apparatus authentication is failed. | 08-20-2015 |
20150309946 | STORAGE DEVICE, PROTECTION METHOD, AND ELECTRONIC APPARATUS - According to one embodiment, a storage device includes, when power is supplied to a storage unit, counting of an elapsed time is started. If a command is input from a host device, and the elapsed time from input of a previous command to input of a current command is calculated based on time information clocked by the host device and on a counter value counted until the corresponding command is input. Matching of the time information is determined based on a temporal relation between the adding result of adding the calculated elapsed time to the time information included in the previous command and the time information included in the current command. When the mismatching is determined, data in the storage unit is invalidated. | 10-29-2015 |
20160139850 | MANAGING METHOD OF STORAGE DEVICE, COMPUTER SYSTEM AND STORAGE MEDIUM - According to one embodiment, a managing method of a storage device including a storage unit capable of being divided into a plurality of storage areas, and being capable of setting an access restriction for each of the storage areas, the method includes setting access restriction information on the access restriction to a desired one of the storage areas, and setting predetermined information which indicates whether the desired storage area is accessible or not and which is capable of being recognized by a host system. | 05-19-2016 |