Patent application number | Description | Published |
20090214379 | NI-BASED SINGLE CRYSTAL ALLOY - Disclosed is a single crystal alloy consisting essentially of, by weight, 0.06-0.09% carbon, 0.016-0.035% B, 0.2-0.4% Hf, 0-0.02% Zr, 6.5-8.5% Cr, 0.4-1.0% Mo, 5.5-9.5% W, 1.2-3.1% Re, 8-10% Ta, 0.3-1.0% Nb, 0-0.4% Ti, 4.7-5.4% Al, 0.5-5.0% Co, 0.1-5% Fe, and the balance of Ni and unavoidable impurities. The alloy is free from solidification cracks during casting a large-sized blade of gas turbines, has grain boundary strength sufficient for assuring the reliability during operation, and further has excellent oxidation resistance to a high combustion gas temperature while having excellent high-temperature strength comparable to that of a conventional single crystal alloy. | 08-27-2009 |
20120102966 | OPERATION CONTROL METHOD FOR GAS TURBINE AND OPERATION CONTROLLER FOR GAS TURBINE - An operation control method for a gas turbine comprising the steps of: making a molten salt map in a liquid phase state by calculating a dew point and a solidus temperature of molten salt for causing high-temperature corrosion on high-temperature components of the turbine due to impurities using a thermodynamic equilibrium calculation on the basis of the impurities contained in low-quality fuel and operation data of the gas turbine, indicating a surface temperature and a pressure of the high-temperature components of the turbine on the molten salt map to determine a superposition state thereof on a region of molten salt in a liquid phase, predicting a lifetime of the high-temperature components of the gas turbine by estimating a corrosion rate thereof, and controlling the flow rate of the low-quality fuel supplied to a combustor on the basis of the prediction of the lifetime of the high-temperature components so that an area of surface temperature and pressure regions of the high-temperature components superposing on the region of molten salt in the liquid phase on the molten salt map is reduced. | 05-03-2012 |
Patent application number | Description | Published |
20090072708 | Nitride phosphor and production process thereof, and light emitting device - To provide a phosphor containing a comparatively much red component and having high light emitting efficiency, high brightness and further high durability, the nitride phosphor is represented by the general formula L | 03-19-2009 |
20090230840 | Nitride phosphor and production process thereof, and light emitting device - To provide a phosphor containing a comparatively much red component and having high light emitting efficiency, high brightness and further high durability, the nitride phosphor is represented by the general formula L | 09-17-2009 |
20090284132 | Nitride phosphor and production process thereof, and light emitting device - To provide a phosphor containing a comparatively much red component and having high light emitting efficiency, high brightness and further high durability, the nitride phosphor is represented by the general formula L | 11-19-2009 |
20090309485 | Nitride phosphor and production process thereof, and light emitting device - To provide a phosphor containing a comparatively much red component and having high light emitting efficiency, high brightness and further high durability, the nitride phosphor is represented by the general formula L | 12-17-2009 |
20100277054 | Light Emitting Device - A light emitting device having a wavelength converting member for absorbing light from a pumping light source and converting its wavelength. Assuming a wavelength where the light from the pumping light source has a maximum energy intensity is a first wavelength, a wavelength where the light from the wavelength converting member has a maximum energy intensity is a second wavelength, a wavelength between the first and second wavelengths where emission spectrum of the light emitting device has a minimum energy intensity is a third wavelength, and a wavelength of 650 nm is a fourth wavelength, the ratio of energy intensity between the first and third wavelengths is 100:15-150, and the ratio of energy intensity between the first and fourth wavelengths is 100:45-200. | 11-04-2010 |
Patent application number | Description | Published |
20110115961 | ORGANIC ELECTRO-LUMINESCENT DISPLAY APPARATUS AND IMAGING APPARATUS INCLUDING THE SAME - Light is prevented from being emitted from a region that overlaps a contract hole in a structure in which light emitting devices are stacked. A stacked organic electro-luminescent display apparatus includes a contact hole that electrically connects a first electrode or a second electrode to a driving circuit. The first or second electrode and a second organic compound layer are provided in the contact hole, and the second organic compound layer existing in the contact hole does not emit light. | 05-19-2011 |
20110148831 | LIGHT-EMITTING APPARATUS - In a light-emitting apparatus including a cap layer disposed on a second electrode and a contact portion, which is disposed in an external region outside the light-emitting region and which electrically connects the second electrode to the drive circuit, the formation end of the cap layer is located in the side nearer to the light-emitting region than is the formation end of the second electrode. | 06-23-2011 |
20120062135 | DISPLAY APPARATUS AND METHOD OF DRIVING PIXEL THEREOF - A display apparatus includes a plurality of pixels each including first and second organic EL elements whose emitting periods are controlled by respective emitting-period control TFTs. The second organic EL element has a front luminance lower than that of the first organic EL element. An electric charge charged in a storage capacitor as a gradation display signal in a previous frame is erased through an erasing TFT and the second organic EL element. | 03-15-2012 |
20120127217 | DIMMING METHOD OF ORGANIC EL DISPLAYING APPARATUS AND ORGANIC EL DISPLAYING APPARATUS - A dimming method of an organic EL displaying apparatus having a displaying unit constructed by combining pixels each having a substrate, an organic EL element formed over the substrate, a power supply line for supplying a power source to the organic EL element, and at least one TFT provided on a wiring path from the power supply line to the organic EL element. The TFT has a semiconductor layer which is arranged between a source electrode and a drain electrode and is electrically connected to the source electrode and the drain electrode. A laser beam is irradiated from a downward direction of the substrate to a region which does not overlap a gate electrode, the source electrode, the drain electrode, and the wiring layer when seen as a plan view in a plane region where the semiconductor layer is provided. | 05-24-2012 |
20120127221 | ORGANIC ELECTROLUMINESCENCE DISPLAYING APPARATUS - An organic EL displaying apparatus which suppresses a defective display caused by a leak current at a time when an emission period controlling transistor is off is provided. The organic EL displaying apparatus comprises a plurality of pixels each of which includes an organic EL element, a power supply line, a driving transistor and the emission period controlling transistor, a data line, and a control line. In this apparatus, in a certain one of the pixels, a resistance R | 05-24-2012 |
20120133272 | ORGANIC EL DISPLAY APPARATUS - Provided is an organic EL display apparatus in which, depending on a situation in which a user uses the organic EL display apparatus, “display with high light use efficiency and high front luminance (luminous efficiency)” or “display with large view angle” is selectable. Pixels each include subpixels having different optical characteristics from each other, and the pixels and the subpixels are respectively arranged in a staggered pattern. Further, the subpixels are independently controlled. | 05-31-2012 |
20130210176 | METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DEVICE - Provided is a method of manufacturing an organic light emitting device capable of suppressing a patterning defect caused by a residue of a release layer, the method including: a first organic compound layer formation step; a first protective layer formation step; a second protective layer formation step; a second protective layer processing step; a first protective layer processing step; a first organic compound layer processing step; a second organic compound layer formation step; and a lift-off step in which the pattern of the second protective layer obtained in the second protective layer processing step is formed also in a second region. | 08-15-2013 |
Patent application number | Description | Published |
20100207521 | LIGHT-EMITTING APPARATUS AND METHOD FOR MANUFACTURING SAME - A light-emitting apparatus including: a substrate; an LED chip mounted on a first surface of the substrate; a fluorescent material-containing layer containing a first fluorescent material, which fluorescent material-containing layer is provided above the first surface of the substrate so as to cover the LED chip; and a color-adjusting fluorescent layer that contains a second fluorescent material, which color-adjusting fluorescent material layer is formed in a layer provided on an outer side of the fluorescent material-containing layer in an emission direction, the color-adjusting fluorescent layer being formed in dots. Thus, the present invention provides a light-emitting apparatus and a method for manufacturing the same, each making it possible to carry out fine color adjustment so as to prevent a subtle color shift that occurs due to a factor such as a difference in concentration of a fluorescent material or the like. | 08-19-2010 |
20140159076 | LIGHT-EMITTING DEVICE - Improves light extraction efficiency. A light emitting device | 06-12-2014 |
20140175501 | LIGHT EMITTING DEVICE - Pkg resin crack is suppressed after dicing. | 06-26-2014 |
20150019168 | LED CLASSIFICATION METHOD, LED CLASSIFICATION DEVICE, AND RECORDING MEDIUM - An LED classification device classifies LEDs, the LEDs each including a combination of an LED element that emits a primary light and a phosphor that, upon excitation by the primary light, emits a secondary light having a longer wavelength than the primary light, the LEDs each emitting a combined light of the primary light and the secondary light, those ones of the LEDs whose primary lights having their chromaticities falling within a predetermined chromaticity range being classified as LEDs for use in a backlight of a liquid crystal display apparatus. The LED classification device calculates, for all of the LEDs to be classified, correction values for the chromaticities as obtained on the assumption that the primary lights have traveled through a color filter of the liquid crystal display apparatus, and correct chromaticities by subtracting the correction values from chromaticities obtained for all of the LEDs to be classified, respectively. | 01-15-2015 |
Patent application number | Description | Published |
20090262151 | INKJET PRINTER SYSTEM AND INK SUPPLY APPARATUS - An inkjet printer system includes a print head, a sub tank, a pressure controller, and a check valve. The print head is configured to eject ink. The sub tank is connected to the print head and has a pressure control hole. The pressure controller is connected to the pressure control hole to control an inner pressure of the sub tank. The check valve is provided at the pressure control hole to prevent ink in the sub tank from flowing into the pressure control hole from the sub tank. | 10-22-2009 |
20090262152 | INKJET PRINTER SYSTEM AND INK SUPPLY APPARATUS - An inkjet printer system includes a print head and a sub tank. The print head is configured to eject ink. The sub tank is provided above the print head and connected to the print head via a head-side supply passage. The sub tank has a first supplying hole and a second supplying hole which are connected to the head-side supply passage. A position of the first supplying hole is higher than a position of the second supplying hole. | 10-22-2009 |
20090262153 | INKJET PRINTER SYSTEM AND INK SUPPLY APPARATUS - An inkjet printer system includes a print head, a sub tank, and a sensor. The print head is configured to eject ink. The sub tank includes an ink supply chamber and an ink detection chamber. The ink supply chamber has an ink inlet hole and an ink outlet hole connected to the print head. Ink is supplied to the sub tank through the ink inlet hole. Ink is supplied to the print head from the sub tank through the ink outlet hole. The ink detection chamber communicates with the ink supply chamber. The sensor is configured to detect an amount of ink contained in the sub tank and includes a float member provided in the ink detection chamber to float in the ink. | 10-22-2009 |
20100295905 | INK SUPPLY DEVICE FOR INKJET PRINTER AND INKJET PRINTER - An ink supply device for an inkjet printer includes a sub-tank and a main tank. The sub-tank has an ink chamber to store liquid ink and is connected to a print head configured to eject the liquid ink via a head-side supply passage. The sub-tank has a plurality of supply holes which connect the ink chamber and the head-side supply passage. At least two of the plurality of supply holes have their openings on the ink chamber side formed at different heights. The main tank is connected to the sub-tank and contains the liquid ink to be supplied to the ink chamber. | 11-25-2010 |
Patent application number | Description | Published |
20110176840 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED THEREWITH - A developing device includes: a developing roller incorporating a fixed magnet body having a plurality of magnetic poles in a circumferential direction; a regulating member for regulating an amount of toner on the developing roller by means of a magnetic field formed by the regulating member and the fixed magnet body; and a magnetic-field generating member for scraping off, on an upstream of the regulating member in a rotational direction of the developing roller, toner which is not used for development on the developing roller. A relation Bm/Br>1 is satisfied, where Br represents a magnetic flux density of a distal end portion of the regulating member facing a surface of the developing roller and Bm represents a magnetic flux density of a distal end portion of the magnetic-field generating member facing the surface of the developing roller. | 07-21-2011 |
20130084107 | DEVELOPER CASE THAT SUPPRESSES CLOGGING DUE TO DEVELOPER, DEVELOPER REPLENISHMENT UNIT HAVING THE SAME, AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer case includes a main body, a first transportation portion, a first transportation member, a supply member, a discharge port, and a second transportation portion. The main body contains developer. The first transportation portion has a first region that receives developer from the main body and a second region that extends from the first region in a first direction. The first transportation member transports developer in the first direction. The supply member supplies developer to the first region. Developer is discharged through the discharge port. The second transportation portion has an inlet port communicating with the second region. Developer that has not been discharged through the discharge port is supplied to the second transportation portion through the inlet port. The second transportation portion transports developer in a second direction. | 04-04-2013 |
20130101317 | DEVELOPER CASE AND IMAGE FORMING APPARATUS TO WHICH DEVELOPER CASE IS APPLIED - A developer case has a main body, a cylindrical portion, and a rotating unit. The main body has a bottom wall. The cylindrical portion has a discharge port. The rotating unit is located so as to extend across the main body and the cylindrical portion, transports developer in the main body, and has a rotating shaft, a first transport member, a second transport member, and dispersing members. The rotating shaft has a first portion located in the main body and a second portion located in the cylindrical portion. The first transport member transports developer in a first transport direction from the cylindrical portion to the main body. The second transport member transports developer in a second transport direction from the main body to the cylindrical portion. The dispersing members move developer in the radial direction. | 04-25-2013 |
20140140732 | DEVELOPING APPARATUS AND IMAGE FORMING APPARATUS - A developing apparatus according to one aspect of the present disclosure includes a developing roller, a development housing, a first agitating screw, a toner supply inlet, a downstream-side reduction wall, and an upstream-side reduction wall. The developing roller is driven to rotate in the development housing, and carries toner on the circumferential surface thereof. Toner is circulated and conveyed in a first conveying path and a second conveying path in the development housing. The first agitating screw is disposed in the first conveying path, and conveys toner in a first direction. The downstream-side reduction wall is disposed downstream of the toner supply inlet. Further, the upstream-side reduction wall is disposed upstream of the toner supply inlet. An accumulation portion for toner is formed downstream and upstream of the toner supply inlet due to the downstream-side reduction wall and the upstream-side reduction wall. | 05-22-2014 |
20140233985 | DEVELOPING DEVICE AND IMAGE FORMING APPRATUS PROVIDED THEREWITH - A developing device includes: a housing, a refill developer storage part, a developing roller, a developer conveyance path, a developer receiving port, a conveyance member, and a magnetic member. The developing roller is driven into rotation in the developing housing and carries a toner on a circumferential surface thereof. The toner is conveyed inside the first conveyance path and the second conveyance path of the developing housing in a circulating manner. A first stirring screw is disposed on the first conveyance path and conveys the toner in a first direction. Downstream of the toner refill port, a magnet is arranged. The magnetic member forms a magnetic blush from a top panel of the developing housing towards the first stirring screw. A refill toner flowed-in through the toner refill port is so conveyed as to fall below the magnetic blush whereby the refill toner is favorably stirred with a surrounding toner. | 08-21-2014 |
20150078786 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS THEREWITH - A developing device includes: a developer container having first and second transport passages, for containing developer; a developer carrier for carrying, on its surface, developer inside the second transport passage; a first stirring/transporting member having a rotary shaft and a transport blade formed on its circumferential surface, for stirring/transporting developer inside the first transport passage; a second stirring/transporting member for stirring/transporting developer inside the second transport passage in a direction opposite to the first stirring/transporting member; a first developer passing portion for delivering developer from the first to the second transport passage; and a second developer passing portion for delivering developer from the second to the first transport passage. In a part of the first stirring/transporting member facing the first developer passing portion, a paddle portion is formed which is devoid of the rotary shaft and which has a plurality of first ribs parallel to the rotary shaft. | 03-19-2015 |
Patent application number | Description | Published |
20110264424 | APPARATUS ABNORMALITY DIAGNOSIS METHOD AND SYSTEM - A technique relating to an apparatus abnormality diagnosis system, capable of easily creating and adding/updating an diagnosis model with respect to an initial and new failure case, and appropriately and efficiently achieving diagnosis of abnormality and instruction of operation using the model. In the abnormality diagnosis system, an diagnosis model creating process unit creates a structured abnormality model expressing a structured abnormality of maintenance operation type to an alarm and apparatus event relating to the maintenance operation type by a graph network structure based on acquisition of maintenance operation data (S | 10-27-2011 |
20110276828 | APPARATUS ANOMALY MONITORING METHOD AND SYSTEM - There is provided a technique related to an apparatus anomaly monitoring method and capable of achieving a model which can detect an anomaly with high accuracy, monitoring with using the model, and others. In an apparatus anomaly monitoring system, a model creation module ( | 11-10-2011 |
20120136629 | APPARATUS ABNORMALITY MONITORING METHOD AND SYSTEM - The present invention relates to an apparatus abnormality monitoring method, and it provides a technology that can achieve accurate abnormality detection, cause diagnosis, and others. This system relates to monitoring of a newly-installed apparatus (T) among a plurality of similar apparatuses | 05-31-2012 |
20130132000 | MONITORING DIAGNOSTIC DEVICE AND MONITORING DIAGNOSTIC METHOD - An abnormality monitoring process milt ( | 05-23-2013 |
20140022540 | ANALYSIS METHOD, ANALYSIS DEVICE, AND ETCHING PROCESSING SYSTEM - Among the multiple OES data wavelengths, an analysis device identifies the wavelength of light emissions from a substance contained in the plasma from among multiple light emission wavelengths within the chamber by way of the steps of: measuring the light emission within the chamber during etching processing of the semiconductor wafer; finding the time-based fluctuation due to changes over time on each wavelength in the measured intensity of the light emissions in the chamber; comparing the time-based fluctuations in the wavelength of the light emitted from the pre-specified substance; and by using the comparison results, identifying the wavelength of the light emitted from the substance caused by light emission within the chamber. | 01-23-2014 |
Patent application number | Description | Published |
20110150530 | IMAGE FORMING APPARATUS - An image forming apparatus including, a photosensitive body for carrying toner images, a transfer section for nipping the recording sheet at a position facing the photosensitive body and transferring the toner images carried on the photosensitive body onto a recording sheet, a driving section for driving the photosensitive body, and a control section for giving instructions to the driving section to conduct a velocity control to rotate the photosensitive body at a predetermined velocity, wherein the control section sets a gain of velocity control to be greater than normal condition, at a time which is at least one of a time when the recording sheet enters the transfer section, or a time when the recording sheet separates from the transfer section. | 06-23-2011 |
20110222922 | FIXING APPARATUS AND IMAGE FORMING APPARATUS INCORPORATING THE SAME - Disclosed is a fixing device, which makes it possible to prevent the air blasting section from deterioration, caused by heat transferred from the duct to the air blasting section. The fixing device includes a fixing section to fix the toner image onto the paper sheet; a heat source; and a separating section to separate the paper sheet from the pair of fixing members. On the other hand, the separating section includes: a gas blasting section to blast a gas; and a duct to guide the gas towards the pair of fixing members, and that is provided with a duct wall serving as a heat receiving surface to receive radiation heat irradiated from the fixing section, and at least one of the gas blasting section and the duct is provided with such a connection structure that suppresses heat transferring action from the duct to the gas blasting section. | 09-15-2011 |
20110280603 | FIXING DEVICE AND IMAGE FORMING APPARATUS - In order that the air surrounding a fixing member is prevented from entering a blowing section for blowing separation air, a wind speed setting section is provided with switchable control modes, namely, a first control mode (control mode for operating the blower fan at a wind speed for separation) and a second control mode (control mode for operating the blower fan at a low speed). This structure allows the blower fan to be controlled in conformity to any one of these first and second control modes. | 11-17-2011 |
20110305492 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes: a fixing section which passes a sheet through a fixing nip portion formed by a pair of fixing members and thereby fixes a toner image on the sheet by heating; a blowing section which separates the sheet from the fixing members by blowing separation wind from a sheet discharge side of the fixing nip portion to the fixing members; an opening setting section which is provided with an opening region in which an opening width in a sheet width direction is adjustable, and adjusts a blowing range in the sheet width direction of the separation wind blown through the opening range from the blowing section to the fixing members; a temperature detection sensor for detecting temperature of the fixing members; and a control section which controls the opening width of the opening setting section based on the temperature detected of the fixing members. | 12-15-2011 |
20120027443 | IMAGE FORMING APPARATUS - An image forming apparatus including: a photoreceptor for bearing a toner image; a transfer body onto which the toner image borne by the photoreceptor is transferred; a drive section for driving the photoreceptor and transfer body respectively, and a control section for controlling the drive section so as to drive the photoreceptor and transfer body at a predetermined driving speed, wherein the control section, under a state in which the control section controls to drive the transfer body at the predetermined driving speed, controls to: a) drive the photoreceptor while changing the driving speed of the photoreceptor within a range of driving speeds between low speed and high speed, including the predetermined driving speed, b) extract torque characteristics under the control which includes the change of driving speed of the photoreceptor, and c) determine the driving speed of the photoreceptor based on the extracted torque characteristics. | 02-02-2012 |
20120098917 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus to form an image by scanning with a light beam through a polygon mirror, having a motor drive section to rotate and drive the polygon mirror based on a polygon drive clock pulse and an image processing section capable of adjusting image magnification through image processing, and a control section to control that at least image magnification adjustment by changing revolution of the polygon mirror or image magnification adjustment through the image processing in the image processing section is selected in accordance with an output form of the image when the image magnification is adjusted. | 04-26-2012 |
20120127520 | OPERATION PANEL AND IMAGE FORMING APPARATUS - Provided is an operation panel using a touch panel method disposed on an image forming apparatus, wherein a CPU judges whether the same coordinate of an input section is in a pressurization when the operation panel is turned on and whether the first time period has elapsed while the above pressurization continues at the same coordinate, makes a display section to display a massage that the input section is unusable and a message to prompt a user to switch the input section to a substitution device, judges whether the pressurization continues after the second time period and the first time period have elapsed and makes the display section to display a warning to indicate that a malfunction occurs at the input section of the operation panel in case the input section is judged to be in the pressurization after the second time period elapsed. | 05-24-2012 |
20120147115 | IMAGE FORMING APPARATUS - An image forming apparatus including; an exposure section provided with, a light emitting element, a polygon mirror to receive light beams from the light emitting element, and to expose an image carrier using light beam via the polygon minor based on image data; an image processing section to adjust image magnification by image processing of the image data; and, a control section configured to select at least either of a first magnification adjustment to change a rotation speed of the polygon mirror and a second magnification adjustment to carry out image processing of the image data by the image processing section, based on comparison results between a paper interval time during recording paper conveyance in image formation and the first magnification adjustment time required to stabilize polygon mirror rotation in the first magnification adjustment, when adjusting image magnification with respect to recording paper. | 06-14-2012 |
20120189329 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus having a first sheet dimension sensor at a conveyance path in a reverse conveyance section | 07-26-2012 |
20120200025 | IMAGE FORMING APPARATUS - Provided is an image forming apparatus which enables quick removal of remaining sheets in the image forming apparatus via an orthogonal reverse section in case a jam occurs inside the image forming apparatus. The image forming apparatus includes a main conveyance section to convey a sheet in the image forming apparatus and to convey the sheet to an ejected sheet section; an orthogonal reverse section to receive the sheet from the main conveyance section and turn over the sheet without swapping a front edge for a rear edge of the sheet by conveying the sheet in a direction perpendicular to a sheet conveyance direction of the main conveyance section and a sheet ejection section to eject the sheet in the orthogonal reverse section outside the orthogonal reverse section along a direction to turn over the sheet by the orthogonal reverse section. | 08-09-2012 |
20120217698 | SHEET REVERSING APPARATUS, IMAGE FORMING APPARATUS AND SHEET REVERSING METHOD - A sheet reversing apparatus including: a right angle reversing conveyance section which reverses front/back sides of a sheet while changing a conveyance direction of the sheet, being conveyed in a first conveyance direction, to a second conveyance direction perpendicular to the first conveyance direction; a sheet skew sensor which detects a sheet skew of the sheet being conveyed by the right angle reversing conveyance section; and a sheet skew correction mechanism which corrects the sheet skew of the sheet while the sheet is being conveyed by the right angle reversing conveyance section. | 08-30-2012 |
20120250058 | PRINTING CONTROL APPARATUS, IMAGE FORMING APPARATUS AND PRINTING SYSTEM - A printing control apparatus connected via a network with one or more of image forming apparatuses includes: a power source detection section which detects an image forming apparatus turned on; and a setting section which sets a mode shift time for shifting from a normal power mode to a power saving power mode a power consumption of which is less than a power consumption of the normal power mode of each of the image forming apparatuses; and a notice section which notices the set mode shift time to the image forming apparatus corresponding to the mode shift time, wherein the setting section changes the mode shift time when a plurality of image forming apparatuses which has been turned on is connected with the network, by comparing with a case when the network is connected with only one image forming apparatus turned on. | 10-04-2012 |
20140348528 | FIXING UNIT AND IMAGE FORMING APPARATUS - An image forming apparatus is provided with a fixing unit in which flickers can be effectively reduced while inhibiting electric current imbalance. The fixing unit comprises a fixing heater, a switching unit for switching the fixing heater on/off with an AC power source, and a control unit which controls the switching unit to switch in units of the half wave period of the AC power source AC, and a storing unit for storing a plurality of energization patterns which define the ways of performing the switch control. Each energization pattern corresponds to a control cycle which contains a three or more odd number of the half wave periods each of which is either an OFF period and an ON period, and all the half wave periods of the smaller in number of the ON periods and the OFF periods are not successively arranged. | 11-27-2014 |
Patent application number | Description | Published |
20100166468 | IMAGE FORMING APPARATUS - An image forming apparatus includes a first image carrying member for carrying a first toner image; a second image carrying member for carrying a second toner image in a maximum amount, of the second toner image carried on the second image carrying member, larger than a maximum amount of the first image carried on the first image carrying member; a first transfer member for electrostatically transferring the first toner image onto a transfer medium in a first transfer nip formed by bringing the transfer medium into contact with the first, image bearing member; and a second transfer member for electrostatically transferring the second toner image onto the transfer medium in a second transfer nip formed by bringing the transfer medium into contact with the second bearing member so that a length of the second transfer nip with respect to a movement direction of the transfer member is longer than a length of the first transfer nip with respect to the movement direction. | 07-01-2010 |
20110103811 | IMAGE FORMING APPARATUS - An image forming apparatus includes a photosensitive member; an exposure device for exposing to light the photosensitive member to form an electrostatic latent image by using exposure image data for an output image to which an information image to be formed so as to be made difficult to be visually recognized with respect to background color has been added; developing portion for developing the electrostatic latent image with color toner into a color toner image; a transparent toner image forming portion for forming a transparent toner image located on the color image on a recording material; and an image processing portion for generating the exposure image data so that a toner amount of the information image on which the transparent toner image is superposed is less than that of the information image on which the transparent toner image is not superposed. | 05-05-2011 |
20110305473 | IMAGE HEATING APPARATUS - An image heating apparatus includes a rotatable belt member for heating an image on a recording material; a rotatable member pressing against said belt member; a nip forming member, provided inside said belt member, for cooperating with said rotatable member to form a nip for nipping and feeding the recording material; a projection provided on a side of said nip forming member near the nip and projecting toward the nip; and an executing portion for executing a first image heating mode operation in which an image formed on the recording material having a first thickness with said projection projected into a nip region and a second image heating mode operation in which an image formed on the recording material having a second thickness which is smaller than the first thickness with said projection is outside the nip region. | 12-15-2011 |
20120107002 | IMAGE FORMING APPARATUS - In an image forming apparatus including an image forming unit which forms an image in which toner containing a wax is used on a recording material, and a fixing device which heats the toner image formed on the recording material at a nip portion which nips and conveys the recording material, when the fixing device heats the recording material on which a toner image having a toner maximum carrying amount of toner is formed, when a temperature of a surface of the toner layer reaches a temperature at which an endothermic amount indicates a peak in a relationship between a temperature of the toner and the endothermic amount, a condition of the fixing device at the nip portion is set so that a temperature of an interface between the toner and the recording material is lower than a temperature of a surface of the toner. | 05-03-2012 |
20120163870 | IMAGE FORMING APPARATUS - In order to output a print with high gloss uniformity, a transparent toner is consumed in a large amount. For that reason, when a constitution of a color developing device and a constitution of a transparent developing device are made substantially identical, a charge amount of the transparent toner is lowered with continuous image formation. In a state in which the transparent toner is not sufficiently charged, an electrostatic image formed on a photosensitive member cannot be sufficiently developed with the toner. | 06-28-2012 |
20130089349 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming unit that forms an unfixed toner image on a recording material and a fixing unit, wherein, in a case where an image is formed by using the toners of the plurality of colors, when a specific gravity of the toners is ρ (g/cm | 04-11-2013 |
20130170849 | IMAGE FORMING APPARATUS - When an unfixed toner image is formed on a recording material, a toner amount per unit area satisfying: A<(ρΠL)/30√3 when a specific gravity of a toner is ρ (g/cm | 07-04-2013 |
Patent application number | Description | Published |
20080282076 | INFORMATION PROCESSING DEVICE - Abstract An information processing device, including: a processing unit; a peripheral circuit module; and a boot address register, wherein the information processing device comprises a first operation mode and a second operation mode having an operating current which is lower than that of said first operation mode, wherein the boot address register holds an address of an instruction to be executed by said processing unit first when the boot address register returns from said second operation mode to said first operation mode, wherein the address is output from said boot address to the processing unit when said information processing device shifts from said second operation mode to said first operation mode. | 11-13-2008 |
20120151197 | INFORMATION PROCESSING DEVICE - Information processing system including a first and a second operation mode with operating current lower than the first, a register holding an address of an instruction executed by a processing unit first when a boot address register returns from second to first operation mode, wherein the address is output to the processing unit when second to first operation mode shifting, wherein the boot address register is rewritable, an information holding circuit holding a value of a peripheral circuit module register, wherein the information holding circuit holds, in the second operation mode, information about the peripheral circuit module register, and, transfers information held in the information holding circuit to the peripheral circuit module register regarding a second-to-first operation mode shift, and wherein when an interrupt request is posted from outside the system in the second operation mode, the information processing system performs interrupt processing corresponding to the interrupt request. | 06-14-2012 |
Patent application number | Description | Published |
20080203004 | ULTRAVIOLET IRRADIATION WATER TREATMENT APPARATUS - An ultraviolet irradiation water treatment apparatus includes a vessel having a cylindrical side portion, and plural rod-shaped ultraviolet lamps are disposed in parallel with a central axis of the side portion in the vessel. A water inlet pipe through which water flows into the vessel is provided in an outer wall of the side portion at a position in a tangential direction of an inner periphery of the side portion. | 08-28-2008 |
20090166276 | WATER TREATMENT SYSTEM - Disclosed is a water treatment system including a raw water tank, a module which includes a filtration membrane, a feed pump, a filtered water tank, a backwash pump which flows filtered water backward from the filtered water tank to the module, a valve and a channel which switch the direction of the water flow between the forward and reverse directions, a controller which suspends the supply of raw water from the raw water tank to the module, switches the valve and channel to the reverse direction, makes the backwash pump to supply filtered water from the filtered water tank to the module thereby backwashing the filtration membrane, and washing drainage treatment line including which treats backwashing drainage generated by backwashing of the filtration membrane, and returns the water to the raw water tank. | 07-02-2009 |
20110024646 | ULTRAVIOLET IRRADIATION WATER TREATMENT APPARATUS - An ultraviolet irradiation water treatment apparatus includes a vessel having a cylindrical side portion, and plural rod-shaped ultraviolet lamps are disposed in parallel with a central axis of the side portion in the vessel. A water inlet pipe through which water flows into the vessel is provided in an outer wall of the side portion at a position in a tangential direction of an inner periphery of the side portion. | 02-03-2011 |
Patent application number | Description | Published |
20090148552 | Mold apparatus - A mold apparatus for two-color molding provided with a movable partitioning member able to be used even when a first cavity for molding a first thermoplastic resin and a second cavity for molding a second thermoplastic resin are completely different in shape or their connecting part is not simple in shape, that is, a mold apparatus for integral molding of two types of thermoplastic resins to produce a two-color shaped article having a movable partitioning member partitioning a space for molding two types of thermoplastic resin into a first space for molding a first thermoplastic resin and a second space for molding a second thermoplastic resin, wherein the movable partitioning member is provided with a hole forming part of the second space | 06-11-2009 |
20090148553 | Mold apparatus - A mold apparatus for two-color molding enabling the use of a general-use mold apparatus with a short support sprue and simple structure, having a fixed side mold, a movable side mold freely openable and closable with respect to the fixed side mold, and a movable partitioning member which is arranged at least at one of the fixed side mold and the movable side mold and partitions a space for molding two types of thermoplastic resin into a first space for molding a first thermoplastic resin and a second space for molding a second thermoplastic resin, wherein a compact injection molding unit injecting the first thermoplastic resin is built-in, and a nozzle of a compact injection molding unit is made to directly adjoin the first space. | 06-11-2009 |
20090174113 | Two-color molding method - A two-color molding method with a short cycle time and a multicolor molding method including that two-color molding method, whereby, by performing an elastomer molding step using a time Z from a time t | 07-09-2009 |
Patent application number | Description | Published |
20110026988 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - In a fixing device, a stationary member is provided inside a belt member and pressed against a rotary pressing member via the belt member to form a nip between the rotary pressing member and the belt member through which a recording medium bearing a toner image passes. An expandable heating member is provided inside the belt member to face an inner circumferential surface of the belt member to heat the belt member. A regulator contacts a downstream portion of the heating member provided downstream from a center of the nip in a direction of rotation of the belt member to expand the downstream portion of the heating member. | 02-03-2011 |
20110044734 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - In a fixing device, a pressing member rotates in a predetermined direction of rotation. A flexible fixing member is disposed opposite the pressing member to rotate in accordance with rotation of the pressing member. A nip formation member is provided inside a loop formed by the fixing member and pressed against the pressing member via the fixing member to form a nip between the fixing member and the pressing member through which a recording medium bearing a toner image passes. A contact member pressingly contacts an outer circumferential surface of the rotating fixing member at both ends of the fixing member in an axial direction thereof. | 02-24-2011 |
20110052245 | FIXING DEVICE, IMAGE FORMING APPARATUS INCORPORATING SAME, AND FIXING METHOD - In a fixing device, a metal member is provided inside a fixing belt to heat the fixing belt. A first lubricant is applied between the metal member and the fixing belt at a center portion of the fixing belt in an axial direction of the fixing belt that contacts a recording medium bearing a toner image. A second lubricant having a viscosity greater than a viscosity of the first lubricant is applied between the metal member and the fixing belt at lateral edge portions of the fixing belt in the axial direction of the fixing belt that do not contact the recording medium. | 03-03-2011 |
20110052282 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - In a fixing device, a nip formation member is provided inside a loop formed by a fixing member rotating in a predetermined direction of rotation. A pressing member is pressed against the nip formation member via the fixing member to form a nip between the fixing member and the pressing member through which a recording medium bearing a toner image passes. The fixing member and the pressing member rotate and convey the recording medium bearing the toner image through the nip. The heat conduction member faces an inner circumferential surface of the fixing member to guide the fixing member sliding over the heat conduction member and to transmit heat to the fixing member. The heat conduction member includes a plurality of convex portions provided on an outer circumferential surface of the heat conduction member and contacting the inner circumferential surface of the fixing member. | 03-03-2011 |
20110076071 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - A fixing device includes a fixing member, a nip formation member, a pressing member, and a low-friction sheet. The nip formation member is provided inside a loop formed by the fixing member rotating in a predetermined direction of rotation. The pressing member is pressed against the nip formation member via the fixing member to form a nip between the fixing member and the pressing member through which a recording medium bearing a toner image passes. The fixing member and the pressing member rotate and convey the recording medium bearing the toner image through the nip. The low-friction sheet, over which the fixing member slides, covers the nip formation member. The nip formation member includes a first sandwiching member covered by the low-friction sheet, and a second sandwiching member sandwiching the low-friction sheet together with the first sandwiching member. | 03-31-2011 |
20130251430 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - A fixing device to fix a toner image on a sheet includes a first rotary member that rotates in a predetermined direction and a second rotary member that contacts an outer circumferential surface of the first rotary member. A stationary member is fixed inside the first rotary member to press the first and second rotary members together to form a nip portion between the rotary members. A reinforcement member is fixedly provided inside the first rotary member and pressed against the stationary member. The fixing device includes heat source to heat the first rotary member and a reflector to reflect heater light emitted from the heat source toward the first rotary member. | 09-26-2013 |
Patent application number | Description | Published |
20110170917 | Fixing device and image forming apparatus incorporating same - A fixing device includes a tubular, stationary metal pipe, a flexible fuser belt, a rotatable pressure member, a fuser pad, and a lubricant. The metal pipe is subjected to heating. The flexible fuser belt is looped for rotation around the metal pipe to transfer heat radially outward from the heated metal pipe. The rotatable pressure member extends opposite the metal pipe with the fuser belt interposed between the metal pipe and the pressure member. The fuser pad is held stationary inside the loop of the fuser belt to press against the pressure member through the fuser belt to form a fixing nip. The lubricant is of a given particle size and deposited between the metal pipe and the fuser belt. The surface of the metal pipe has a rough section which exhibits a surface roughness equal to or greater than the particle size of the lubricant. | 07-14-2011 |
20110182638 | HEAT CONDUCTION UNIT, FIXING DEVICE, AND IMAGE FORMING APPARATUS - A heat conduction unit includes a flexible endless belt, a heat conductor disposed in proximity to an inner circumferential face of the endless belt and having a cross-section substantially identical to a cross-section of the endless belt, a heat source that heats the heat conductor to heat the endless belt, a pressing roller disposed opposite the heat conductor to rotate the endless belt in accordance with rotation of the pressing roller, a nip formation member disposed opposite the pressing roller and within a loop formed by the endless belt to form a nip between the endless belt and the pressing roller, and a pushing member disposed within the loop to support the nip formation member. The heat conductor has at least two different cross-sectional shapes perpendicular to a long direction of the heat conductor at different positions in the long direction of the heat conductor. | 07-28-2011 |
20110200370 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - A fixing device includes a substantially cylindrical metal member, a heater positioned to heat the metal member, an endless, flexible fixing member disposed rotatably around the metal member and heated by the metal member to heat and fix a toner image, a rotary pressing member disposed opposite the metal member and pressed against an outer circumferential surface of the fixing member to form a nip therebetween, and a stationary member disposed at an inner circumferential surface side of the fixing member and pressed by the pressing member via the fixing member to form the nip. At least when the fixing member is relatively moved toward the metal member during assembly of the fixing member with the metal member, the metal member includes at least one protruding portion protruding axially outward from an axial end of the metal member to guide the fixing member axially toward the metal member. | 08-18-2011 |
Patent application number | Description | Published |
20110102505 | LIQUID EJECTING APPARATUS AND LIQUID EJECTING PRINTING APPARATUS - A carriage apparatus of an ink jet recording apparatus, which discharges a photocurable ink and photocures the discharged ink, thereby forming a desired image on the recording medium, includes a plurality of recording heads for discharging the ink with respect to the recording medium; a recording carriage on which the plurality of recording heads is mounted so as to be divided into a plurality of recording portions; a plurality of photocuring units which is disposed to photocure the ink on the recording medium; and a photocuring carriage on which a plurality of photocuring units is mounted and which is disposed in a plane with a gap between the photocuring carriage and the recording carriage, wherein, in the photocurable carriage, a plurality of holding portions for holding the respective photocuring units forms a narrow part, respectively and is connected with each other. | 05-05-2011 |
20110102526 | CARRIAGE APPARATUS OF INK JET RECORDING APPARATUS AND INK JET RECORDING APPARATUS EQUIPPED THEREWITH - A carriage apparatus of an ink jet recording apparatus, discharges a photocurable ink, while moving with respect to a recording medium in main scan and sub scan directions. The carriage apparatus includes a first recording portion having recording heads for discharging a first ink to the recording medium. A first half curing unit irradiates and half cures the first ink. A second recording portion at a downstream side of a sub scan direction with respect to the first recording portion discharges the second ink to the recording medium and has fewer recording heads than the first recording portion. A second half curing unit irradiates the second ink with light to half cure the second ink. A main curing unit at the downstream side of the sub scan direction of the second recording portion irradiates the recording medium with light, thereby fully curing the half cured first and second inks. | 05-05-2011 |
20110102527 | CARRIAGE DEVICE OF INK JET RECORDING APPARATUS AND INK JET RECORDING APPARATUS HAVING THE SAME - Ink jet recording apparatus carriage device which discharges light cure type ink onto a recording medium while moving along a first guide shaft and a second guide shaft, which are disposed parallel to each other, curing the discharged ink by light, thereby forming a desired image on the recording medium, includes: head unit having recording head which discharges the ink onto the recording medium and recording carriage on which the recording head is mounted; light curing unit having a plurality of light curing sections which cures the ink on the recording medium by light and light curing carriage on which the plurality of light curing sections are mounted; carriage base slidably supported on the first guide shaft; and support frame having one end fixed to the carriage base and the other end slidably supported on the second guide shaft, wherein the head unit is supported in a cantilever manner on the carriage base. | 05-05-2011 |
Patent application number | Description | Published |
20090298255 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF - A semiconductor device including a SRAM section and a logic circuit section includes: a first n-type MIS transistor including a first n-type gate electrode formed with a first gate insulating film interposed on a first element formation region of a semiconductor substrate in the SRAM section; and a second n-type MIS transistor including a second n-type gate electrode formed with a second gate insulating film interposed on a second element formation region of the semiconductor substrate in the logic circuit section. A first impurity concentration of a first n-type impurity in the first n-type gate electrode is lower than a second impurity concentration of a second n-type impurity in the second n-type gate electrode. | 12-03-2009 |
20110006374 | METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE INCLUDING A SRAM SECTION AND A LOGIC CIRCUIT SECTION - A semiconductor device including a SRAM section and a logic circuit section includes: a first n-type MIS transistor including a first n-type gate electrode formed with a first gate insulating film interposed on a first element formation region of a semiconductor substrate in the SRAM section; and a second n-type MIS transistor including a second n-type gate electrode formed with a second gate insulating film interposed on a second element formation region of the semiconductor substrate in the logic circuit section. A first impurity concentration of a first n-type impurity in the first n-type gate electrode is lower than a second impurity concentration of a second n-type impurity in the second n-type gate electrode. | 01-13-2011 |
20110156150 | SEMICONDUCTOR DEVICE AND DESIGN METHOD THEREOF - A semiconductor device includes a plurality of first cells having a first cell height, and a plurality of second cells having a second cell height. Each of the first cells has a first MIS transistor of a first conductivity type, and a substrate contact region of a second conductivity type. Each of the second cells has a second MIS transistor of the first conductivity type, a power supply region of the first conductivity type, and a first extended region of the first conductivity type that is silicidated at a surface thereof. The first cell height is greater than the second cell height. | 06-30-2011 |
20150084106 | SOLID-STATE IMAGING DEVICE AND METHOD OF MANUFACTURING THE DEVICE - A solid-state imaging device includes unit pixels formed on a semiconductor substrate. Each of the unit pixels includes a photoelectric converter, a floating diffusion, a pinning layer, and a pixel transistor. The pixel transistor includes a gate electrode formed on the semiconductor substrate, a source diffusion layer, and a drain diffusion layer. At least one of the source diffusion layer or the drain diffusion layer functions as the floating diffusion. The pinning layer is covered by the floating diffusion at a bottom and a side at a channel of the pixel transistor. A conductivity type of the floating diffusion is opposite to that of the pinning layer. | 03-26-2015 |
Patent application number | Description | Published |
20080222478 | Retransmission method and wireless communication system - Disclosed herewith is a communication method employed for a wireless communication system. The method controls retransmission in case where wireless communication between a data transmitter and a data receiver in the system is unstable, thereby suppressing increasing of a communication delay time that might otherwise be caused by the retransmission control, thereby reducing transmission error occurrence. The transmitter node transmits a wireless signal including data while the receiver node receives the wireless signal and checks the received signal for error existence. If not detecting any error in the received data, the receiver node transmits an ACK (Acknowledgement) signal to the transmitter node. If detecting an error in the received data, the receiver node does not transmit the ACK (Acknowledgement) signal to the transmitter node. At this time, an interception node intercepts the data transmitted from the transmitter node and stores the intercepted data in a data storage unit. And if not detecting the ACK (Acknowledgement) signal transmitted from the receiver node, the interception node retransmits the stored data to the receiver node. If detecting the ACK (Acknowledgement) signal, the interception node does not retransmit the stored data to the receiver node. | 09-11-2008 |
20090232113 | WIRELESS COMMUNICATION SYSTEM, BASE STATION AND TRANSMISSION TIMING CONTROL METHOD - A wireless communication system includes first and second transmitting stations cooperating with each other to transmit data signals in parallel to the same receiving station. The first transmitting station transmits data at a slot reference timing of each TDMA slot within a data transmission period. The second transmitting station calculates the adjustment amount of data transmission timing for the receiving station within a propagation delay time measurement period, and transmits data at a transmission timing determined by a slot reference timing and the adjustment amount in each TDMA slot within the data transmission period. | 09-17-2009 |
20110134848 | WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD - There is provided a wireless communication system in which a feedback volume is reduced as exceeding a communication speed demanded by a mobile station. The wireless communication system includes: a plurality of base stations | 06-09-2011 |
20120087265 | WIRELESS COMMUNICATION SYSTEM, INTEGRATED BASE STATION, AND TERMINAL - A frame time having a certain period of time is divided into: a time period (for inter-base-station time division multiplex communication) in which one of the base stations has a transmission right in the simultaneous transmission and carries out inter-base-station time division multiplex communication so as to avoid interference between the base stations; and a time period (for inter-base-station simultaneous communication) for communication which is simultaneously carried out between the plurality of base stations. Furthermore, the time periods are switched for the communication. | 04-12-2012 |
20120134279 | DISTRIBUTED ANTENNA SYSTEM, DISTRIBUTED ANTENNA SWITCHING METHOD, BASE STATION APPARATUS AND ANTENNA SWITCHING DEVICE - In a distributed antenna system in which plural antennas are dispersed spatially, a base station apparatus | 05-31-2012 |
20120142351 | CELLULAR SYSTEM AND HAND-OFF QUALITY IMPROVEMENT METHOD - A base station calculates numerical value data regarding hand-off quality by carrier and by neighbor station. The base station transmits the calculated numerical value data to a management apparatus. The base station receives an improvement instruction from the management apparatus, changes transmission electric power or a transmission direction of an electric wave of a carrier designated with the improvement instruction. The management apparatus determines an improvement subject base station and an improvement subject carrier from a management table using previously-set improvement determination conditions. The management apparatus transmits the improvement instruction to change the transmission electric power or transmission direction of the electric wave of the improvement subject carrier to the improvement subject base station. | 06-07-2012 |
20120149411 | DISTRIBUTED ANTENNA SYSTEM, BASE STATION DEVICE, AND ANTENNA SELECTION CONTROL METHOD - An optimum communication mode and an optimum antenna are selected according to traffic and a radio propagation status of a terminal. With the use of traffic information between a base station and the terminal, an SISO communication or an SIMO communication is conducted if the traffic is small. It is determined whether the MIMO communication should be conducted, or not, if the traffic is large. An antenna that can exert the effect as the MIMO communication is selected by using the radio propagation channel state information between the distributed antennas of the base station and the antenna of the terminal. Also, because the selection of the antenna is changed by conducting the MIMO communication, an antenna optimum for the terminal that conducts the SISO communication or the SIMO communication is re-selected taking the interference influence on the terminal that conducts the SISO communication or the SIMO communication into account. | 06-14-2012 |
20120214491 | BANDWIDTH CONTROL SYSTEM - A bandwidth control system is provided, enabling the prevention of a resource shortage in the base station, caused by preliminary authentication which reserves resources in advance. The bandwidth control system limits a bandwidth of a communication path used for the preliminary authentication, in the case where a count of successful authentication of the wireless terminal belonging to the first wireless system and a count of successful preliminary authentication transmitted from the wireless terminal belonging to the second wireless system establish a predetermined relationship. | 08-23-2012 |
20120214528 | DISTRIBUTED ANTENNA SYSTEM, COMMUNICATION CONTROL METHOD AND BASE STATION APPARATUS - The selection range of antenna candidates effective for MIMO communication is widened in a base station to increase the throughput of MIMO communication. A terminal sends a sounding signal at given time intervals with the maximum transmission power or with an antenna selection transmission power threshold or larger. With this transmission, since the number of antenna candidates that receive the signal is increased at a base station in the distributed antenna system, the radio propagation channel state between the terminal and the base station apparatus is checked to select the combination of antennas having good orthogonality. Before the terminal sends the sounding signal, the terminal reserves beforehand the transmission timing of the sounding signal or performs carrier sensing to determine whether a surrounding terminal is sending a signal to avoid the collision/interference of packets of sounding signals between terminals. | 08-23-2012 |
20120243513 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND RADIO COMMUNICATION METHOD - To secure a constant level or more of radio communication quality for each user equipment performing radio communication with a base station apparatus, and to increase the number of user equipment which the base station apparatus can accommodate under a condition of assuring the radio communication quality. In a radio communication system where there exist a base station apparatus having multiple antennas and user equipment for performing radio communication with a first antenna group including one or more of the antennas, the first antenna group is made configurable for each user equipment individually, and addition/deletion of the antenna to/from the first antenna group is performed based on the communication quality of each user equipment so that the number of antennas within the first antenna group may be minimized within a range satisfying a required value of the communication quality between the base station apparatus ad the user equipment. | 09-27-2012 |
20130070625 | WIRELESS COMMUNICATION SYSTEM AND BASE STATION - To reduce an uplink interference in a network with a first base station of a large output and a second base station of a small output. Detecting the interference, the second base station urges the first base station to hand over a terminal causing it to the second base station. Multiple base stations and one or more terminals exist in this system, each terminal connects with one base station, and a serving base station is changed according to a communication state of each terminal. If the different second base station other than the first base station to which the terminal connects detects a large interference, the second base station will multicast transmit information for urging handover to the base stations except itself. The base station having received the information specifies a terminal giving the interference to the second base station, and makes it to be handed over thereto. | 03-21-2013 |
20130128760 | DISTRIBUTED ANTENNA SYSTEM AND WIRELESS COMMUNICATION METHOD USED IN SAID SYSTEM - A distributed antenna system that forms a plurality of communication areas and allows a plurality of terminals to communicate simultaneously, while minimizing variability in the quality of communication among the terminals. Said distributed antenna system: provides one or more logical antenna ports to wireless front-end units provided with remote radio heads (RRHs); forms a plurality of communication areas; determines the terminals that will communicate in each communication area; controls connection between the logical antenna port(s) and the front-end units per communication area; and uses signal-processing devices associated with the logical antenna ports to perform signal processing for each terminal. | 05-23-2013 |
20130190024 | BASE STATION, SYSTEM, AND METHOD OF UPLINK INTERFERENCE COORDINATION IN WIRELESS COMMUNCIATION - A macro base station includes a communication prohibited period setting unit of setting an uplink communication prohibited period to a user equipment belonging to the base station, and prohibits an uplink communication from the user equipment to a wireless communication base station per se during the uplink communication prohibited period. The user equipments belonging to the wireless communication base station per se and the second base station are divided into plural groups, and the uplink communication prohibited period is set to different time periods for the respective groups. Thereby, a communication characteristic is prohibited from being deteriorated at the second base station by an interference affected with the second base station separately from the first base station by the user equipment communicating with the first base station in the uplink communication. | 07-25-2013 |