Patent application number | Description | Published |
20090066278 | STEPPING MOTOR DRIVE AND STEPPING MOTOR DRIVING METHOD - In a drive of a stepping motor, an electromotive force is generated on the coil of a motor with a sinusoidal wave having the same period as an energization period by smoothly rotating a rotor with microstep driving, and an induced power is stably detected by detecting the electromotive force at the zero cross of driving current. The detection around the current zero cross makes it possible to shorten a detection section, form a driving waveform with few distortions, and perform driving with a driving waveform as in an ordinary micro step. Thus a circuit is provided which is aimed at reducing noise, vibrations, and loss of synchronization, and increasing current consumption efficiency in the determination of stop. | 03-12-2009 |
20100156861 | DISPLAY DRIVER AND DISPLAY APPARATUS - A display driver includes a shift register; an OR circuit configured to perform an OR operation on data signals respectively representing bits in the shift register which are not adjacent to each other, and to output a result of the OR operation; a delay circuit configured to delay the output of the OR circuit, and to output the delayed output; timing generators respectively corresponding to the data signals, where each of the timing generators generates and outputs a first control signal including a first pulse and a second control signal including a second pulse in accordance with a corresponding one of the data signals and the output of the delay circuit; and output circuits respectively corresponding to the timing generators, where each of the output circuits outputs voltages of a first and a second power supply. A duration of the second pulse includes a duration of the first pulse. | 06-24-2010 |
20110181341 | PUSH-PULL DRIVER CIRCUIT - A push-pull driver circuit includes a control circuit which controls switching operations of a plurality of high-side transistors, a level-shift circuit which shifts a control signal, output by the control circuit when the control circuit performs turn-off control on the plurality of transistors, to a first voltage by which the plurality of transistors are turned off, and which inputs the shifted signal to a gate of one of the plurality of transistors, and a conduction-state selection circuit which, if an output of the level-shift circuit is the first voltage, inputs the output to gates of the rest of the transistors, and otherwise, according to the control by the control circuit, sets each of gate inputs of the rest of the transistors to either a high-impedance state or a second voltage by which the plurality of transistors are turned on. | 07-28-2011 |
20110254823 | DRIVE DEVICE AND DISPLAY DEVICE - The drive device includes a first switch section including switching elements, a second switch section including switching elements, and output circuits. Each of the output circuits includes a switching element having a first and a second end, a first voltage being supplied to the first end, and a first and a second rectifier element each having a current input terminal and a current output terminal connected to the second end of the switching element. Each of the output circuits corresponds to one of the switching elements of the first switch section and one of the switching elements of the second switch section, the one of the switching elements of the first switch section is connected to the current input terminal of the first rectifier element, and the one of the switching elements of the second switch section is connected to the current input terminal of the second rectifier element. | 10-20-2011 |
20120056574 | Stepping motor driver - In a drive of a stepping motor, an electromotive force is generated on the coil of a motor with a sinusoidal wave having the same period as an energization period by smoothly rotating a rotor with microstep driving, and an induced power is stably detected by detecting the electromotive force at the zero cross of driving current. The detection around the current zero cross makes it possible to shorten a detection section, form a driving waveform with few distortions, and perform driving with a driving waveform as in an ordinary micro step. Thus a circuit is provided which is aimed at reducing noise, vibrations, and loss of synchronization, and increasing current consumption efficiency in the determination of stop. | 03-08-2012 |
20120104985 | STEPPING MOTOR DRIVE UNIT - In a stepping motor drive unit which drives a stepping motor including coils having a plurality of phases, and has functions of causing both ends of one of the coils having one of the plurality of phases to have high impedance to detect an inductive voltage in the coil, and determining a rotation/stop state of the stepping motor based on a result of the detection, the stepping motor drive unit has a function of temporarily stopping, while causing the both ends of the coil having the one of the plurality of phases to have high impedance, PWM driving of at least one of the other coils to fix an energized state of the coil. | 05-03-2012 |
20130114782 | DISPLAY PANEL DRIVE DEVICE - A display panel drive device includes: a ring counter circuit that includes a first ring counter having a plurality of flipflops connected in cascade, configured to operate in synchronization with a first clock signal with a first-stage one of the plurality of flipflops being set by an initial signal, and outputs signals using outputs of the plurality of flipflops; a shift register having a plurality of flipflops connected in cascade, configured to operate in synchronization with a second clock signal lower in frequency than the first clock signal with a first-stage one of the plurality of flipflops being set by the initial signal; and an output section configured to perform a logical operation between one of outputs of the ring counter circuit and one of outputs of the shift register, to generate a scanning line drive signal for a display panel. | 05-09-2013 |
20130147278 | INDUCTION LOAD DRIVING SYSTEM - When a direction command signal indicates a first direction, a signal for causing the other end of the induction load to be connected to a second power supply unit is output as a second control signal. In addition, after a passage of a first predetermined delay time after a first current detection value becomes less than a reference value of a conducting current, a signal for causing the one end of the induction load 5 to be connected to a first power supply unit is output as a first control signal. And, after a passage of a second predetermined delay time after the first current detection value becomes equal to or greater than the reference value of the conducting current, a signal for causing the one end of the induction load to be connected to the second power supply unit is output as the first control signal. | 06-13-2013 |
20140252950 | SEMICONDUCTOR LIGHT SOURCE LIGHTING CIRCUIT AND VEHICULAR LAMP - A semiconductor light source lighting circuit includes a voltage step-down unit configured to generate a drive voltage lower than an input voltage by turning on or off a first switching element in a voltage step-down mode, a voltage step-up unit configured to generate the drive voltage higher than the input voltage by turning on or off a second switching element in a voltage step-up mode, and a controller. The controller includes a charge pump unit configured to repeat charging from the drive voltage to a second capacitor and discharging from the charged second capacitor to the first capacitor in the voltage step-up mode, and a switch drive unit configured to apply a voltage higher than the voltage at the other end of the first switching element to the control terminal of the first switching element by using a voltage of the charged first capacitor. | 09-11-2014 |
Patent application number | Description | Published |
20100140019 | Lubricating system for gear train - This invention provides a lubricating system for a gear train including: a lubricating oil supply port configured to supply a lubricating oil in a direction vertical to both axes of a pair of gears and toward a mesh point at which the pair of gears are meshed with each other; a shroud configured to cover at least teeth of the pair of gears so as to form a flow passage of the lubricating oil between the pair of gears and the shroud; and a pair of discharge ports respectively configured to discharge the lubricating oil from the flow passage. The pair of discharge ports are respectively positioned at two portions of the shroud respectively opposed to the mesh point across respective axes of the pair of gears. | 06-10-2010 |
20130025405 | GEAR TRAIN LUBRICATING DEVICE - A gear train lubricating device configured to supply lubricating oil OL to a gear included in a gear train is provided. The gear train lubricating device includes: a shroud covering, among components constituting the gear, at least teeth of the gear; and a lubricating oil supply port through which the lubricating oil OL is supplied to a meshing position of the gear. The shroud has an outlet port formed therein, through which the supplied lubricating oil OL is discharged. The outlet port is formed in a portion of the shroud that is positioned radially outward from the gear, such that the outlet port is disposed at an angular position that is 90°±15° forward from the meshing position in a rotation direction R | 01-31-2013 |
20130095974 | PLANETARY GEAR SYSTEM AND GEAR REDUCER - A planetary gear system ( | 04-18-2013 |
20130102432 | PLANETARY GEAR SYSTEM - A planetary gear system ( | 04-25-2013 |
20130180803 | GEAR TRAIN LUBRICATING DEVICE - A lubricating device for a gear train ( | 07-18-2013 |
20150352477 | MIST SEPARATOR - A mist separator for separating liquid mist from a gas containing the liquid mist includes a rotor fixed to a hollow rotary shaft and includes main rotating vanes; and a stator axially juxtaposed to the rotor. The stator includes main fixed vanes located downstream of the main rotating vanes on a flow path for the gas; and a cover that covers outer peripheries of the main fixed vanes and the main rotating vanes. The main fixed vanes are formed so as to cause the gas to flow radially inward from the outer peripheries thereof while a flow rate of the gas is decreased, and the cover is provided with a cover discharge port to discharge a recovery liquid which is a collection of the liquid mist to the outside of the cover. | 12-10-2015 |
Patent application number | Description | Published |
20080320434 | PHOTOMASK MANAGEMENT METHOD AND PHOTOMASK WASH LIMIT GENERATING METHOD - A photomask is washed and at least one physical amount of transmittance and phase difference of the photomask, dimension of a pattern, height of the pattern and a sidewall shape of the pattern is measured. After this, the two-dimensional shape of a borderline pattern previously determined for the photomask is measured. Lithography tolerance is derived by performing a lithography simulation for the measured two-dimensional shape by use of the measured physical amount. Then, whether the photomask can be used or not is determined based on the derived lithography tolerance. | 12-25-2008 |
20090202924 | METHOD OF EVALUATING A PHOTO MASK AND METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE - A method of evaluating a photo mask, includes measuring each dimension of a plurality of pattern portions of a mask pattern formed on a photo mask, obtaining an inter-pattern distance between the pattern portion and a pattern different from the pattern portion with respect to each of the pattern portions, obtaining a dimensional difference between the measured dimension of the pattern portion and a target dimension of the pattern portion with respect to each of the pattern portions, grouping the dimensional difference obtained for each pattern portion into a plurality of groups in accordance with the inter-pattern distance obtained for each pattern portion, obtaining an evaluation value based on the dimensional difference in each group with respect to each of the groups, and evaluating the photo mask based on the evaluation value. | 08-13-2009 |
20120202140 | FLARE PREDICTION METHOD, PHOTOMASK MANUFACTURING METHOD, SEMICONDUCTOR DEVICE MANUFACTURING METHOD, AND COMPUTER-READABLE MEDIUM - According to one embodiment, a flare prediction method in photolithography includes determining a pattern density distribution of a pattern layout, determining an inclination of a variation in the pattern density distribution, and performing a flare calculation in a plurality of partition sizes based on the inclination of a variation in the pattern density distribution. | 08-09-2012 |
Patent application number | Description | Published |
20100323282 | METHOD OF CORRECTING A FLARE AND COMPUTER PROGRAM PRODUCT - A method of correcting a flare comprising: calculating a distribution of a flare value corresponding to pattern data on the pattern data as a flare map; calculating an occupancy of a pattern having a predetermined flare value on the pattern data as a flare value occupancy for each flare value, by using the flare map; determining a reference flare value to be a reference of the flare value based on the distribution of the flare value occupancy; and performing a pattern correction corresponding to the flare value with a pattern correction amount at the reference flare value as a reference. | 12-23-2010 |
20120198395 | FLARE VALUE CALCULATION METHOD, FLARE CORRECTION METHOD, AND COMPUTER PROGRAM PRODUCT - In a flare value calculation method according to an embodiment, an average optical intensity is calculated for each of mask patterns in a case where an exposure process is performed on a substrate using the mask patterns. Then, pattern correction amounts for the mask patterns corresponding to the average optical intensity and information about the dimensions of the mask patterns are calculated for each mask pattern. Then, post-correction mask patterns are prepared by performing pattern correction on each of the mask patterns using the pattern correction amount. Then, a flare value of an optical system of an exposure apparatus is calculated using a pattern average density of the post-correction mask patterns. | 08-02-2012 |
20120244707 | METHOD OF CORRECTING MASK PATTERN, COMPUTER PROGRAM PRODUCT, MASK PATTERN CORRECTING APPARATUS, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE - In the method of correcting a mask pattern according to the embodiments, a mask pattern correction amount for a reference flare value is calculated as a reference mask correction amount, for every type of patterns within the layout, and a change amount of the mask pattern correction amount corresponding to the change amount of the flare value is calculated as the change amount information. A mask pattern corresponding to the flare value of the pattern is created based on the reference mask correction amount and the change amount information corresponding to the pattern, extracted from the information having the pattern, the reference mask correction amount, and the change amount information correlated with each other, and based on a difference between the flare value of the pattern and the reference flare value. | 09-27-2012 |