Patent application number | Description | Published |
20090002281 | ACTIVE MATRIX ORGANIC ELECTROLUMINESCENCE DISPLAY AND ITS GRADATION CONTROL METHOD - An active matrix organic electroluminescence(EL) display comprises plural selection and data lines mutually crossed, and a pixel circuit connected to the selection and data lines and having switching devices, a storage capacitor and an organic EL device. In a part of a period that the pixel circuit connected to the selection line is being selected, an applied first data signal is held as a voltage at the storage capacitor of the selected pixel circuit. After the selection signal applying, a first current according to the held voltage is supplied to the organic EL device, and this emits light at luminance according to the first current. In another part of the period, a second current according to an applied second data signal is supplied to the organic EL device of the selected pixel circuit, and this emits light at luminance according to the second current. | 01-01-2009 |
20090002356 | DISPLAY APPARATUS AND DRIVING METHOD OF DISPLAY APPARATUS - A display apparatus including a pixel circuit including a light emitting element arranged in a site where a scanning line crosses a signal line; a holding capacitor; a first switch which opens and closes connection between one terminal of the light emitting element and the signal line in accordance with a signal applied to the scanning line; a second switch which opens and closes connection between one terminal of the holding capacitor and the signal line in accordance with a signal applied to the scanning line to control current to be supplied to the light emitting element, wherein in the pixel circuit selected by a signal of the scanning line, the first switch is closed to apply a voltage to one terminal of the light emitting element from a first voltage supply connected to the signal line and the second switch is closed to apply a voltage to one terminal of the holding capacitor from a second voltage supply connected to the signal line. | 01-01-2009 |
20100007656 | DISPLAY APPARATUS AND DRIVING METHOD THEREOF - Display image quality degradation caused by a burn-in phenomenon is prevented in a self-emission type display apparatus. A degradation characteristic acquisition circuit acquires degradation characteristics of a pixel region, and a boundary portion detection circuit detects a boundary of the degradation characteristics. A correction amount operation circuit arithmetically operates a correction amount based on the boundary, and a video signal correction circuit corrects a video signal. The correction amount is determined based on the boundary of the degradation characteristics such that emission luminance is gently varies in a periphery of a boundary of a pixel due to the burn-in phenomenon, and whereby the burn-in phenomenon becomes inconspicuous. | 01-14-2010 |
20100073265 | ACTIVE-MATRIX DISPLAY AND DRIVE METHOD THEREOF - An active-matrix display includes a data line, at least one select line, a control unit supplying a voltage signal and a current signal to the data line, and a pixel circuit receiving the voltage signal and the current signal from the data line to drive a light emitting element, the control unit including a voltage or first current source supplying a voltage or current pulse to the data line in order to make the voltage holding unit hold the voltage signal for making the light emitting element emit light having predetermined brightness in a first selection period in which the first switch is closed, a second current source supplying the current signal for making the light emitting element emit light having the predetermined brightness to the data line in a second selection period in which the first switch and the second switch are closed, a detection circuit detecting potential held in the voltage holding unit in the second selection period, and a correction unit correcting the voltage signal based on a relationship between the current signal and the detected potential. | 03-25-2010 |
20110121686 | DRIVING CIRCUIT FOR VIBRATION-TYPE ACTUATOR - A driving circuit is configured to drive a vibration-type actuator including a vibration member and a moving member. The vibration member includes an electro-mechanical energy conversion element and may generate a vibration wave in response to an alternating voltage applied to the electro-mechanical energy conversion element. The moving member is in contact with the vibration member and may move in response to the vibration wave relative to the vibration member. The driving circuit includes a capacitor and an inductor connected in series with the capacitor to the electro-mechanical energy conversion element. Parameters of the driving circuit may be set such that when a series resonance frequency of the inductor and the capacitor is denoted by fs and a resonance frequency of the vibration member is denoted by fm, a condition 0.73·fm05-26-2011 | |
20110227511 | DRIVING UNIT OF VIBRATION-TYPE ACTUATOR - A driving unit of a vibration-type actuator includes a command unit, a change making unit, an AC signal generating unit, and a filter unit. The command unit outputs a command signal that directs at least one of a frequency, an amplitude, and a phase difference of an AC signal. The change making unit makes a change to the command signal and outputs the command signal. The AC signal generating unit generates a generated AC signal in which at least one of a frequency, an amplitude, and a phase difference of the generated AC signal is modulated in accordance with the output of the change making unit. The filter unit selectively dampens a frequency component, of at least one of the output signal of the change making unit and an output signal of the AC signal generating unit, that excites vibration other than vibration in a predetermined vibration mode. | 09-22-2011 |
20110248652 | CONTROL CIRCUIT FOR VIBRATION-TYPE ACTUATOR - A control circuit is provided for a vibration-type actuator that generates a vibration wave in a vibrating member by applying an alternating voltage, and relatively rotates a moving member contacting protrusions of the vibrating member. The control circuit includes a feedback control circuit and a repetitive compensator. The feedback control circuit subjects the vibration-type actuator to feedback control based on a deviation between a relative speed between the moving member and the vibrating member and a command speed or a deviation between a relative position between the moving member and the vibrating member and a command position. The repetitive compensator provides a repetitive period that is set to T/(an integral multiple of fs), where T is a period of rotation of the moving member, and fs is a spatial frequency of a speed deviation based on a contact area distribution between the protrusions and the moving member. | 10-13-2011 |
20120194910 | VIBRATION MEMBER DRIVING CIRCUIT - A vibration member driving circuit causes vibrations in a vibration member at least including an electro-mechanical energy conversion element and an elastic body by applying alternating voltage to the electro-mechanical energy conversion element fixed to the elastic body. The vibration member driving circuit includes an inductor and capacitor serially connected to the electro-mechanical energy conversion element. 0.73*fm08-02-2012 | |
20120274243 | DRIVING CIRCUIT FOR VIBRATION APPARATUS - The present invention provides a driving circuit for a vibration apparatus which drives an object using a vibration wave generated by an electro-mechanical energy conversion element is equipped with an electrical resonance circuit, and which is capable of reducing harmonic components of an alternating voltage applied to an electro-mechanical energy conversion element. The electrical resonance circuit includes an electrostatic capacity of the conversion element, plural inductors connected in series with the conversion element, and a capacitor connected at one end between the plural inductors and connected in parallel with the conversion element. The electrical resonance circuit has at least two resonance frequencies including a first frequency and a second frequency and satisfies the relation: | 11-01-2012 |
20130249445 | CONTROL APPARATUS OF VIBRATION-TYPE ACTUATOR - Information regarding a rotational speed is detected by utilizing a variation in the amplitude at a frequency corresponding to the number of a plurality of protrusions of a vibrating member generated in an S-phase signal detected from a vibration detection electrode of a vibration-type actuator. | 09-26-2013 |
20140009088 | DRIVING CIRCUIT FOR VIBRATION-TYPE ACTUATOR - An apparatus includes a vibration-type actuator and a driving circuit. The vibration-type actuator includes a vibration member and a moving member, wherein the vibration member includes an electro-mechanical energy conversion element and the moving member is configured to move relative to the vibration member. The driving circuit includes a capacitor and an inductor connected in series with the capacitor to the electro-mechanical energy conversion element. In an example, parameters of the driving circuit are set such that, when a series resonance frequency of the inductor and the capacitor is denoted by fs and a resonance frequency of the vibration member is denoted by fm, a condition 0.73·fm01-09-2014 | |
20140071545 | CONTROL DEVICE, ACTUATOR INCLUDING CONTROL DEVICE, IMAGE BLUR CORRECTION DEVICE, INTERCHANGEABLE LENS, IMAGE PICKUP APPARATUS, AND AUTOMATIC STAGE - A control device includes: a controller that outputs control, signals pertaining to at least two directions, respectively, based on predetermined gains in a normal operation mode, and outputs control signals based on gains set with respect to the two directions, respectively, in a learning operation mode; a controlled amount calculating unit that receives the control signals and outputs signals pertaining to drive parameters with respect to at least two motors, respectively, wherein the controlled amount calculating unit includes: a characteristic difference calculating unit that calculates characteristic differences between at least the two motors based on the control signals; and a gain compensator that corrects controlled amount pertaining to drive parameters of at least the two motors according to the calculated characteristic differences of at least the two motors, and outputs the signals. | 03-13-2014 |
20140074297 | CONTROL DEVICE, ACTUATOR INCLUDING CONTROL DEVICE, IMAGE BLUR CORRECTION DEVICE, REPLACEMENT LENS, IMAGING DEVICE AND AUTOMATIC STAGE - Provided is a vibration type driving device enabling multidirectional driving of a moving body while considering a difference in transfer characteristics of the synthesized driving force of a plurality of motors between at least two mutually crossing directions. | 03-13-2014 |
20140232300 | VIBRATION MEMBER DRIVING CIRCUIT - A vibration member driving circuit causes vibrations in a vibration member at least including an electro-mechanical energy conversion element and an elastic body by applying alternating voltage to the electro-mechanical energy conversion element fixed to the elastic body. The vibration member driving circuit includes an inductor and capacitor serially connected to the electro-mechanical energy conversion element. 0.73*fm08-21-2014 | |
20140292233 | DRIVING CIRCUIT FOR VIBRATION-TYPE ACTUATOR - A driving circuit to drive a vibration member comprising an electro-mechanical energy conversion element includes a transformer connected in parallel to the electro-mechanical energy conversion element. The transformer includes a primary coil configured such that an alternating voltage is applied to the primary coil, and a secondary coil connected to the electro-mechanical energy conversion element in parallel, and an inductor connected to the primary coil in series, Parameters of the driving circuit are set such that, when a frequency of a peak voltage applied to the electro-mechanical energy conversion element is denoted by fe and a driving frequency of the vibration member is denoted by fd, a condition fe<1.5·fd is satisfied. | 10-02-2014 |
Patent application number | Description | Published |
20110294036 | POROUS ELECTRODE SUBSTRATE, METHOD FOR PRODUCING THE SAME, MEMBRANE ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL - Provided is a porous electrode substrate having high mechanical strength, good handling properties, high thickness precision, little undulation, and adequate gas permeability and conductivity. Also provided is a method for producing a porous electrode substrate at low costs. A porous electrode substrate is produced by joining short carbon fibers (A) via mesh-like of carbon fibers (B) having an average diameter of 4 μm or smaller. Further provided are a membrane-electrode assembly and a polymer electrolyte fuel cell that use this porous electrode membrane. A porous electrode substrate is obtained by subjecting a precursor sheet, in which short carbon fibers (A) and short carbon fiber precursors (b) having an average diameter of 5 μm or smaller have been dispersed, to carbonization treatment after optional hot press forming and optional oxidization treatment. | 12-01-2011 |
20120100456 | POROUS ELECTRODE SUBSTRATE AND METHOD FOR PRODUCING THE SAME - The present invention provides a porous electrode substrate that has low production cost, high mechanical strength, thickness precision, and surface smoothness, and sufficient gas permeability and electrical conductivity, and a method for producing the same. In the present invention, for example, a porous electrode substrate that includes short carbon fibers (A) joined together via three-dimensional mesh-like carbon fibers (B) is produced by a method including a step (1) of dispersing short carbon fibers (A), and short carbon fiber precursors (b) to be fibrillated by beating, to produce a precursor sheet; and a step (2) of subjecting the precursor sheet to carbonization treatment at a temperature of 1000° C. or higher. | 04-26-2012 |
20120115063 | POROUS ELECTRODE SUBSTRATE AND METHOD FOR PRODUCING THE SAME - The present invention provides a porous electrode substrate that has high sheet strength, low production cost, and sufficient gas permeability and electrical conductivity, and a method for producing the same. In the present invention, the porous electrode substrate is produced by producing a precursor sheet including short carbon fibers (A), and one or more types of short precursor fibers (b) that undergo oxidation and/or one or more types of fibrillar precursor fibers (b′) that undergo oxidation, all of which are dispersed in a two-dimensional plane, subjecting the precursor sheet to entanglement treatment to form a three-dimensional entangled structure, then impregnating the precursor sheet with carbon powder and fluorine-based resin, and further heat treating the precursor sheet at a temperature of 150° C. or higher and lower than 400° C. This porous electrode substrate includes a three-dimensional entangled structure including short carbon fibers (A) dispersed in a three-dimensional structure, joined together via oxidized fibers (B), short carbon fibers (A) and oxidized fibers (B) being further joined together via carbon powder and fluorine-based resin. | 05-10-2012 |
20120141911 | POROUS ELECTRODE SUBSTRATE, METHOD FOR PRODUCING THE SAME, PRECURSOR SHEET, MEMBRANE ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL - The provision of a porous electrode substrate that has large sheet strength, low production costs, high handling properties, high thickness precision and surface smoothness, and sufficient gas permeability and electrical conductivity. A porous electrode substrate including a three-dimensional entangled structure including short carbon fibers (A) dispersed in a three-dimensional structure, joined together via three-dimensional mesh-like carbon fibers (B). A method for producing a porous electrode substrate, including a step (1) of producing a precursor sheet including short carbon fibers (A), and short carbon fiber precursors (b) and/or fibrillar carbon fiber precursors (b′) dispersed in a two-dimensional plane; a step (2) of subjecting the precursor sheet to entanglement treatment; and a step (3) of subjecting this sheet to carbonization treatment at 1000° C. or higher. It is preferable to include a step (4) of subjecting the sheet to hot press forming at lower than 200° C. between step (2) and step 3), and to further include a step (5) of subjecting the sheet after hot press forming to oxidation treatment at 200° C. or higher and lower than 300° C. between step (4) and step (3). | 06-07-2012 |
20130224625 | POROUS ELECTRODE SUBSTRATE AND PROCESS FOR PRODUCTION THEREOF, POROUS ELECTRODE SUBSTRATE PRECURSOR SHEET, MEMBRANE-ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL - Provided are: a porous electrode substrate which has excellent handling properties and surface smoothness and satisfactory gas permeability and electrical conductivity, and enables the reduction of damage to a polymer electrolyte membrane when integrated into a fuel cell; and a process for producing the porous electrode substrate. Specifically provided are: a porous electrode substrate comprising a three-dimensional structure (Y-1) produced by bonding short carbon fibers through carbon and a three-dimensional structure (Y-2) produced by bonding short carbon fibers through carbon, wherein the three-dimensional structures (Y-1) and (Y-2) are layer stacked on and integrated with each other, the short carbon fibers form a three-dimensional entangled structure in the structure (Y-1), and the short carbon fibers do not form a three-dimensional entangled structure in the structure (Y-2); a process for producing the electrode base material; a precursor sheet for producing the electrode base material; a membrane-electrode assembly which involves the electrode base material; and a polymer electrolyte fuel cell. | 08-29-2013 |
20130302714 | POROUS ELECTRODE SUBSTRATE, METHOD FOR MANUFACTURING SAME, MEMBRANE ELECTRODE ASSEMBLY, POLYMER ELECTROLYTE FUEL CELL, PRECURSOR SHEET, AND FIBRILLAR FIBERS - Provided is a porous electrode substrate having excellent thickness precision, gas permeability and conductivity, handling efficiency, low production costs and a high carbonization rate during carbonization. Also provided are a method for manufacturing such a substrate, a precursor sheet and fibrillar fiber used for forming such a substrate, along with a membrane electrode assembly and a polymer electrolyte fuel cell that contain such a substrate. The method for manufacturing a porous electrode substrate includes step (1) for manufacturing a precursor sheet in which short carbon fibers (A) and carbon fiber precursor (b) are dispersed, and step (2) for carbonizing the precursor sheet, and the volume contraction rate of carbon fiber precursor (b) in step (2) is 83% or lower. The present invention also relates to a porous electrode substrate obtained by such a manufacturing method, a precursor sheet and fibrillar fiber used for forming the substrate, along with a membrane electrode assembly and a polymer electrolyte fuel cell containing the substrate. | 11-14-2013 |
20130323620 | POROUS ELECTRODE SUBSTRATE, METHOD FOR MANUFACTURING SAME, PRECURSOR SHEET, MEMBRANE ELECTRODE ASSEMBLY, AND POLYMER ELECTROLYTE FUEL CELL - According to the present invention, a porous electrode substrate with greater sheet strength, lower production cost, and excellent gas permeability and conductivity as well as its manufacturing method are provided. Also provided are a precursor sheet for forming such a substrate, and a membrane electrode assembly and a polymer electrolyte fuel cell containing such a substrate. The method for manufacturing such a porous electrode substrate includes the following steps [1]˜[3]: [1] a step for manufacturing a sheet material in which short carbon fibers (A) are dispersed; [2] a step for manufacturing a precursor sheet by adding a water-soluble phenolic resin and/or water-dispersible phenolic resin to the sheet material; and [3] a step for carbonizing the precursor sheet at a temperature of 1000° C. or higher. The present invention also relates to a porous electrode substrate obtained by such a manufacturing method as well as a precursor sheet to be used for manufacturing the substrate, a membrane electrode assembly and a polymer electrolyte fuel cell. | 12-05-2013 |
Patent application number | Description | Published |
20090198987 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM STORING COMPUTER PROGRAM - An information processing apparatus includes a transceiver unit transmitting and receiving information to and from an external device is provided. The apparatus includes a setting information storage unit storing setting information related to an operating environment in association with user identification information, a judging unit judging whether the information that the transceiver unit transmits to or receives from the external device includes given information, an extraction unit extracting the given information from the information including the given information, a specifying unit specifying a user on the basis of the given information, and a setting unit reading the setting information stored in the setting information storage unit in association with the user identification information and setting the user operating environment on the basis of the setting information. | 08-06-2009 |
20090290553 | BASE STATION APPARATUS, COMMUNICATION SYSTEM AND COMPUTER PROGRAM - There is provided a base station apparatus which allocates communication bands for terminal units from an available communication band, and performs wireless communications with the terminal units using the allocated communication bands, including: a priority table storing priority information used for deriving a priority of the communication; a detecting part detecting a situation change concerning the communications; a band derivation part deriving communication bands required for the communications with terminal units to communicate, when the detecting part detects the situation change; a priority derivation part deriving priorities of the communications with the terminal units on the basis of the priority information stored in the priority table; and an allocating part allocating the communication bands derived by the band derivation part for the wireless communications with the terminal units in the order of descending priorities derived by the priority derivation part. | 11-26-2009 |
20100135270 | COMMUNICATION SYSTEM, CALL CONTROL DEVICE, BASE STATION DEVICE AND RECORDING MEDIUM - A communication system for calling a plurality of terminal devices in response to a single request of call connection, assigning, for a single terminal device which answered the call, a communication band to be occupied in a communication band which can be used, and establishing the call connection in the assigned communication band, the communication system includes a deriving section that derives a communication band required for the call connection of each of the terminal devices to be called when the request of call connection is received, a securing section that secures a communication band including the maximum width in each of the derived communication bands in the communication band which can be used; and an assigning section that assigns a communication band to be occupied in the secured communication band to the terminal device which answered the call. | 06-03-2010 |
20100246796 | FORWARDING APPARATUS, TELEPHONE SERVER, FORWARDING METHOD, AND FORWARDING SYSTEM - A forwarding apparatus includes: a transmission source acquisition part for acquiring a first telephone number of a telephone corresponding to a transmission source of digital information; a call destination receiving part for receiving, from the telephone server, a second telephone number of a telephone called through the telephone number acquired by the transmission source acquisition part; a forwarding destination identifying part for identifying a forwarding destination corresponding to a telephone having the second telephone number received by the call destination receiving part; and a forwarding part for forwarding the digital information to the forwarding destination identified by the forwarding destination identifying part. | 09-30-2010 |
20140050053 | ESTIMATION DEVICE AND ESTIMATION METHOD - A computer-readable recording medium storing an estimation program for causing a computer to execute a process, the process includes: executing sound image localization processing for each of pieces of sound data output by a plurality of sound sources; and specifying, on the basis of a change in orientation of a listener caused in accordance with the sound image localization processing, at least one of the plurality of sound sources related to the listener. | 02-20-2014 |
20140307877 | INFORMATION PROCESSING APPARATUS AND SOUND PROCESSING METHOD - An information processing apparatus includes a forward deciding unit that makes a decision as to a user's forward according to the user's orientation information, a sound generating unit that creates sound data assigned to each of virtual sound sources placed in a plurality of directions preset in advance, a compressing unit that performs compression on the created sound data by the sound generating unit in different ways between the created sound data corresponding to the user's forward obtained by the forward deciding unit and the created sound data corresponding to a direction other than the user's forward, and a communication unit that transmits the compressed sound data by the compressing unit. | 10-16-2014 |
20150032240 | INFORMATION PROVISION DEVICE, INFORMATION PROVISION METHOD, AND INFORMATION PROVISION SYSTEM - An information provision device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, selecting a content corresponding to position information of a user from contents stored in a storage unit in advance; multiplexing the contents using a multiplex number that corresponds with familiarity of the user with the selected content; and providing the multiplexed contents to the user. | 01-29-2015 |