Shirou
Shirou Araki, Hiroshima JP
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20130148817 | ABNORMALITY DETECTION APPARATUS FOR PERIODIC DRIVING SYSTEM, PROCESSING APPARATUS INCLUDING PERIODIC DRIVING SYSTEM, ABNORMALITY DETECTION METHOD FOR PERIODIC DRIVING SYSTEM, AND COMPUTER PROGRAM - An abnormality detection apparatus for a periodic driving system includes a detection unit; a data obtaining unit for time series data from the detected sound; a determinism derivation unit configured to derive a plurality of values representing determinism providing an indicator of whether the time series data is deterministic or stochastic or a plurality of intermediate variations in a calculation process of the values representing determinism at a predetermined interval from the time series data; a probability distribution calculation unit. The abnormality detection apparatus further includes a determination unit configured to determine existence or non-existence of abnormality in the periodic driving system based on the probability distribution of the values representing determinism or the intermediate variations. | 06-13-2013 |
Shirou Asada, Aichi JP
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20080248204 | PREPREG AND METHOD OF MANUFACTURING THE PREPREG - The present invention relates to a prepreg which is free from the phenomenon that air is trapped between layers to generate voids, has good handling characteristics and can produce molded articles having any complicated shape and also relates to a method of producing the prepreg. A reinforced-fiber sheet is impregnated with a matrix resin so as to form a continuous resin layer at least in the inside thereof, and then, a protective film having an irregular surface is applied to at least one surface of the reinforced-fiber sheet impregnated with the matrix resin such that the irregular surface faces the reinforced-fiber sheet. In this state, the prepreg is allowed to leave at 30 to 60° C. under the atmosphere for 12 hours or more. The resulting prepreg ( | 10-09-2008 |
Shirou Fujita, Ueda-Shi JP
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20150252288 | METHOD FOR PRODUCING COMPOSITION CONTAINING HIGHLY UNSATURATED FATTY ACID ALKYL ESTER - The present invention provides a composition having a high content of highly unsaturated fatty acid alkyl ester. A method for producing a composition comprising a highly unsaturated fatty acid alkyl ester, the method comprising contacting a raw material comprising a highly unsaturated fatty acid alkyl ester with an aqueous solution comprising a silver salt and subsequently recovering an aqueous phase; adding an organic solvent to the aqueous phase, and subsequently recovering an organic solvent phase; and rectifying the organic solvent phase at a temperature of 170 to 190° C. and a column top vacuum degree of 1 Pa or less to recover the highly unsaturated fatty acid alkyl ester from the organic solvent phase. | 09-10-2015 |
Shirou Fujita, Kamakura-Shi JP
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20120069683 | SEMICONDUCTOR STORAGE DEVICE - According to one embodiment, a semiconductor storage device includes a cell array, an even line, an odd line, and sense amplifiers. The cell array includes memory cells holding data. The even line connects to the memory cells. The odd line connects to the memory cells. The memory cells connect to an odd column or the even column. Each the sense amplifiers selectively connect to the odd line or the even line. Each the sense amplifiers includes a latch circuit, a first transistor, a second transistor, and a third transistor. The latch circuit includes a first node and a second node, and holds the data supplied to the first node. The first transistor supplies read data to the latch circuit. The second transistor transfers the data held by the latch circuit to the wiring. The third transistor transfers the data held by the latch circuit to the wiring. | 03-22-2012 |
20140063952 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a semiconductor memory device includes memory cell arrays each including blocks. The block is unit of erase and includes string-groups. Each string-group includes strings each including a first transistor, memory cell transistors, a second transistor coupled in series. The first transistor is connected to different bit line and the second transistor is connected to same source line. The memory cell arrays are provided with different respective block address signals. The memory cell arrays are provided with different respective string address signals. Each of the block address signals specifies one block. Each of the string address signals specifies one string-group. | 03-06-2014 |
20140071756 | SEMICONDUCTOR MEMORY DEVICE AND CONTROLLER - According to one embodiment, a semiconductor memory device includes a plurality of blocks. The blocks includes a first selection transistor, a second selection transistor, a plurality of memory cell transistors, a first selection gate line and a second selection gate line, and word lines. One of the blocks holds information on a word line, a first selection gate line and/or a second selection gate line including a short-circuiting defect. | 03-13-2014 |
20140369127 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a semiconductor memory device includes a first string; a second string; and a controller. The first string is coupled with a first bit line and includes first memory cells. The second string is coupled with a second bit line and includes second memory cells. The controller executes writing first data into the first memory cells and writing second data into the second memory cells simultaneously. The controller reads data from the first and second strings after writing the first and second data. | 12-18-2014 |
20150036430 | SEMICONDUCTOR MEMORY DEVICE - A controller controls a memory including first and second strings. The first and second strings configure first and second string groups, respectively. In each string group, a set of memory cell transistors each from each string configures a unit. The controller is configured to: sequentially write, in the first string group, data in first units to which serially-coupled memory cell transistors respectively belong; sequentially write, in the second string group, data in first units to which serially-coupled memory cell transistors respectively belong; and sequentially write, in the first string group, data in second units to which serially-coupled memory cell transistors respectively belong. | 02-05-2015 |
20150036434 | SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a semiconductor memory device reads data in units of page. The device includes: a memory cell array; a plurality of latch circuits; and an arithmetic operation circuit. The memory cell array holds data multiplexed in at least three pages. The latch circuits read and hold the multiplexed data at a startup. The arithmetic operation circuit performs operations by use of the multiplexed data. | 02-05-2015 |
20150248322 | MEMORY CONTROLLER AND MEMORY SYSTEM - According to one embodiment, a memory controller includes a controller that is configured to, when notified of an error by one of memory chips at a time of power supply startup, transmit a first command including an address to the memory chip by which the error was notified, when notified of a normal end by the memory chip in which the first command was received, transmit a second command including an address to the memory chip by which the normal end was notified. | 09-03-2015 |
Shirou Fujita, Kanagawa-Ken JP
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20120134211 | MEMORY SYSTEM - A memory system includes: a plurality of banks each including a memory cell array and a sense amplifier; a buffer circuit electrically connected to the plurality of banks; a switch circuit configured to switch on and off an electrical connection between the buffer circuit and each of the plurality of banks an interface electrically connected to the buffer circuit; and a controller configured to control the plurality of banks, the buffer circuit, the switch circuit and the interface, wherein for reading data held in the memory cell array by outputting the data to the interface in 5 clock cycles, the controller is configured to control the switch circuit in order that the switch circuit electrically connects a selected one of the banks to the buffer circuit upon the lapse of 1.5 clock cycles after a clock is inputted into the selected bank. | 05-31-2012 |
Shirou Fujita, Kamakura JP
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20150206590 | MEMORY SYSTEM - According to one embodiment, a memory system includes a nonvolatile semiconductor memory device and a controller. The system includes the nonvolatile semiconductor memory device including a plurality of memory cells; and the controller configured to control one of read operation, write operation, and a use frequency of the read operation or the write operation on the nonvolatile semiconductor memory device, and configured to change controlling for a memory cell belonging to a first group of the memory cells and to change controlling for a memory cell belonging to a second group located on an upper side or a lower side of the memory cell belonging to the first group. | 07-23-2015 |
Shirou Godai, Wako-Shi JP
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20130025389 | CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION - In a control apparatus for an automatic transmission having multiple speeds constituted by four sets and speed selecting mechanisms corresponding to the four sets, assuming the speeds as seven among eight speeds of A to H in order of gear ratio, the four sets are constituted by a first set of A having a largest gear ratio and C that is next but one; a second set including at least H having a smallest gear ratio; a third set of B and D between two of the first set; and a fourth set including two of E, F and G between the second and third sets, and one of first and second pressure regulators selectively supplies hydraulic pressure to two of the mechanisms corresponding to the first and second sets, while the other thereof selectively supplies hydraulic pressure to two of the mechanisms corresponding to the third and fourth sets. | 01-31-2013 |
Shirou Hasegawa, Tokyo JP
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20100193506 | LITZ WIRE COIL - A litz wire coil is formed of two litz wires, each having a number of single wires equal to one half of a predetermined number of single wires and each stranded collectively in mutually reverse directions and wound in parallel. The two litz wires are shaped into a coil and then pressed into a predetermined shape by means of a die. Since the number of single wires within each of two litz wires is set equal to one half of a predetermined number, electrical resistance substantially equal to that of a single litz wire coil is attained without increasing the single wire diameter and without thickening the insulating film on the individual wires. Since two litz wires are collectively stranded in mutually reverse directions, risk of cross-cutting the single wires upon pressing is eliminated, | 08-05-2010 |
20100237063 | RETICULATE HEATER FOR STEERING WHEEL - A reticulate heater for a steering wheel exhibits flexibility, elasticity and waterproofness. The reticulate heater comprises a reticulate heat generating element ( | 09-23-2010 |
Shirou Hayashihara, Osaka JP
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20090244713 | MICRO LENS ARRAY SHEET FOR USE IN BACKLIGHT DEVICE AND MOLDING ROLL FOR MANUFACTURING SUCH MIRCO LENS ARRAY SHEET - A micro lens array sheet includes a sheet type base and a plurality of micro lenses arranged on the base. The surface of each micro lens includes a convex part and a peripheral edge part. The convex part has a spherical or elliptical surface. The peripheral edge part is formed between the convex part and the base and curved in a concave shape. Since the surface of the peripheral edge part is curved in a concave shape, the flat part can be narrower than a conventional micro lens array sheet. Therefore, luminance unevenness attributable to the flat part can be suppressed. | 10-01-2009 |
Shirou Honma, Yokohama-Shi JP
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20100022717 | A terminal isocyanate group-containing polyamide resin, alkoxysilane-modified polyamide resin, processes for production of the resins, hot-melt adhesive agent, and cured resin product - A terminal isocyanate group-containing polyamide resin can be produced by reacting a terminal carboxyl group-containing oligomer and a polyisocyanate compound at such a ratio that the amount of an isocyanate group exceeds that of a carboxyl group. An alkoxysilane-modified polyamide resin can be produced by reacting the terminal isocyanate group-containing polyamide resin with an alkoxysilane compound containing a secondary amine. | 01-28-2010 |
20100029860 | ALKOXYSILANE-CONTAINING RESIN, MODIFIED ALKOXYSILANE-CONTAINING RESIN, THEIR PRODUCTION METHODS, HOT MELT ADHESIVE, AND RESIN CURED PRODUCT - An alkoxysilane-containing resin is produced by reacting a terminal carboxyl group-containing oligomer with an isocyanato alkoxysilane compound. | 02-04-2010 |
Shirou Honma, Hyogo JP
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20080314173 | Transmission of vehicle - The invention provides a transmission of a vehicle which can smoothly execute shift-up and shift-down operations. The transmission is provided with change gears, a shift member, a change drum, a change shaft rotationally operated at a predetermined angle by a rider, and a change operation force transmitting mechanism transmitting the rotation of the change shaft to the change drum. The change operation force transmitting mechanism includes a driven body integrally rotating with the change drum and having a concave portion in an inner peripheral surface, a pole holder arranged in an inner side of the driven body and rotationally reciprocating on the basis of a rotational reciprocation of the change shaft, a pole held to the pole holder, and being displaceable around a supporting point between an engaged state in which a leading end is engaged with the concave portion and a non-engaged state in which a leading end is away from the concave portion toward an inner side in a diametrical direction of the pole holder, an energizing means for energizing the pole to the engaged state, and a limiting means for limiting in such a manner that the supporting point of the pole is not displaced with respect to the pole holder. | 12-25-2008 |
Shirou Nagata, Saitama JP
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20090002174 | Wireless tag, wireless tag communication system, wireless tag access device, method of detecting corresponding wireless tags and computer readable medium - A wireless tag includes at least one of a signal radiation unit that radiates a first linking signal based on an instruction from a wireless tag access device, and a signal detection unit that detects a second linking signal that has been radiated and provides the second linking signal to the wireless tag access device. | 01-01-2009 |
Shirou Nakano, Minamikawachi-Gun JP
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20120090913 | ELECTRIC POWER STEERING SYSTEM - A controller applies slight rotational torque to a drive gear of a reduction mechanism also in a predetermined range in which a motor does not produce any steering operation assist force. That is, the motor is caused to produce slight rotational torque not enough to drive a driven gear, and the rotational torque direction is reversed under a given condition. Accordingly, a backlash between the drive gear and the driven gear is eliminated. | 04-19-2012 |
Shirou Ogawa, Osaka-Shi JP
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20120000588 | PNEUMATIC TIRE - Provided is a pneumatic tire including a hook-and-loop fastener which has a plurality of engaging elements provided at one surface of a base, in which the base of the hook-and-loop fastener is adhered to an inner surface of the tire so that the engaging elements are located near an inner cavity of the tire, and in which a protrusion is provided at one surface of the base of the hook-and-loop fastener to prevent the engaging elements from being crushed. | 01-05-2012 |
Shirou Sonoke, Kanagawa JP
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20150126594 | LIQUID COMPOSITION CONTAINING TAXANE-BASED ACTIVE INGREDIENT, PROCESS FOR PRODUCING SAME, AND LIQUID PREPARATION - A liquid composition which includes a taxane-based active ingredient (a) selected from the group consisting of docetaxel and a derivative thereof; at least one glycol (b); and at least one surfactant component (c) selected from the group consisting of a polysorbate, a polyoxyethylene glycol ester, and a polyoxyethylene castor oil derivative, in which a volume ratio of the glycol (b) to the surfactant component (c) is in a range of form 45/55 to 55/45, and a total content of the glycol (b) and the surfactant component (c) with respect to a total volume of the liquid composition is 95% (v/v) or more. | 05-07-2015 |
Shirou Sugimoto, Kariya-City JP
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20090248245 | VEHICLE DISPLAY UNIT - A vehicle display unit for a vehicle includes a display panel, a transmitting panel, a peripheral wall member, and a sounding body. The display panel faces a vehicle interior of the vehicle and displays visual information to a vehicle occupant of the vehicle. The transmitting panel is disposed on a vehicle interior side of the display panel. The visual information is transmitted to the vehicle occupant through the transmitting panel. The peripheral wall member surrounds a space between the display panel and the transmitting panel in a circumferential direction of the display panel. The sounding body is attached on an outer circumferential surface of the peripheral wall member and is configured to provide auditory information for the vehicle occupant by generating a sound wave. The peripheral wall member has a communicating hole, which opens toward the sounding body and communicates with the space. | 10-01-2009 |
Shirou Taniguchi, Kitaadachi-Gun JP
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20140061535 | NEMATIC LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT USING SAME - A liquid crystal composition in which deterioration of viscosity that is associated with an increase in Δn and an increase in Δ∈ is suppressed, and a liquid crystal display element having a markedly improved response speed by using the relevant liquid crystal composition. The liquid crystal composition has a large value of Δn and negative Δ∈, and have large absolute values thereof. Also, the liquid crystal composition has low η, has excellent liquid crystal properties, and exhibits a liquid crystal phase that is stable in a wide temperature range. Furthermore, since the liquid crystal composition is chemically stable to heat, light, water and the like, the liquid crystal composition is capable of low voltage driving, and is practically useful and highly reliable. | 03-06-2014 |
Shirou Taniguchi, Kita-Adachi-Gun JP
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20150159087 | LIQUID CRYSTAL COMPOSITION HAVING NEGATIVE DIELECTRIC ANISOTROPY, AND LIQUID CRYSTAL DISPLAY DEVICE USING THE LIQUID CRYSTAL COMPOSITION - Provided are a liquid crystal composition having negative dielectric anisotropy and a liquid crystal display device that uses the liquid crystal composition. The present invention relates to a liquid crystal composition having a negative dielectric anisotropy (Δ∈) and useful as an electro-optic liquid crystal display material, and a liquid crystal display device that uses the liquid crystal composition. The liquid crystal composition contains one or more compounds represented by general formula (I) and one or more compounds represented by general formula (II). Since the rate of change in operation voltage versus temperature can be decreased by using the liquid crystal composition of the present invention, the invention is effective for improving the display quality in a low-temperature zone. Thus, the liquid crystal composition is suitable for use in vehicle-mounted displays and mobile appliances that are expected to be used in cold areas and outdoors. | 06-11-2015 |
Shirou Yamaguchi, Tokyo JP
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20110017183 | TWO-STROKE INTERNAL COMBUSTION ENGINE - There is provided a reverse scavenged two-stroke internal combustion engine that is capable of effectively suppressing the short-circuiting of fresh charge (unburnt air-fuel mixture), while at the same time being capable of further improving scavenging efficiency, combustion efficiency, etc. The horizontal sectional shape of at least one pair of scavenging passages ( | 01-27-2011 |
20140238371 | Two-Stroke Internal Combustion Engine - The scavenging passage includes a wall surface that defines an orientation direction of a main scavenging gas flow spouting from the scavenging port to the cylinder chamber. In a boundary portion between the scavenging port and the scavenging passage, a wall surface located on an opposite side of the exhaust port is composed of an inclined surface inclined in a direction further away from the exhaust port than a wall surface of a deep portion of the scavenging passage. The scavenging port includes a rear wall surface located in a portion on the opposite side of the exhaust port. The rear wall surface continues to the inclined surface to extend in the direction away from the exhaust port and generates an incidental scavenging gas flow incidental to the main scavenging gas flow and higher in speed than the main scavenging gas flow. | 08-28-2014 |
20140299099 | Internal Combustion Engine - A main nozzle ( | 10-09-2014 |
Shirou Yamashita, Saga JP
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20090241699 | MICRO-LIQUID TRANSFER APPARATUS AND MICRO-LIQUID TRANSFER METHOD - In a micro-liquid transfer apparatus including two washing tanks (first washing tanks A and B), operations to transfer a sample are carried out using two pin tools (pin tools A and B) alternately. While one pin tool A is being mounted on a pin tool holder and is being used to transfer a liquid, the other pin tool B is waiting in a state where the lower end portions of their associated pins are immersed in the first washing tank B. While one pin tool A is being mounted on a pin tool holder and is being used to transfer a very small amount of liquid, the lower end portions of the respective pins of the other pin tool are washed, whereby the liquid transfer operations can be made in progress with no interruption and thus the generation of the operation waiting time can be prevented. | 10-01-2009 |
Shirou Yamashita, Yamanashi JP
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20130276281 | LOWER SUPPORTING PIN LAYOUT DETERMINATION APPARATUS AND LOWER SUPPORTING PIN LAYOUT DETERMINATION METHOD - A lower supporting pin module | 10-24-2013 |
20130291379 | ELECTRONIC COMPONENT MOUNTING DEVICE, ELECTRONIC COMPONENT MOUNTING METHOD, AND METHOD FOR CHANGING ARRANGEMENT OF BOTTOM RECEPTION PIN MODULE - A bottom reception pin module | 11-07-2013 |
20130298382 | BOTTOM RECEPTION PIN MODULE FOR ELECTRONIC COMPONENT MOUNTING DEVICE, SUBSTRATE BOTTOM RECEPTION DEVICE, AND SUBSTRATE BOTTOM RECEPTION METHOD - A bottom reception pin module | 11-14-2013 |
20140201998 | LOWER RECEIVING PIN ARRANGEMENT METHOD AND LOWER RECEIVING PIN RETURN METHOD - A pre-array temporary placement area A | 07-24-2014 |
Shirou Yoshidomi, Fukuoka JP
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20080272834 | Absolute Multi-Revolution Encoder - To reduce the consumption current of the backup power supply of an absolute multi-revolution encoder thereby to elongate the life time of the backup power supply. | 11-06-2008 |
20100060112 | ENCODER WITH MOTOR - With a motor with an encoder of the invention, a stopper gap formed between a stopper formed on an outer circumferential surface of a hub of the encoder and a bearing cover of an anti-load side bracket is set smaller than an encoder gap to prevent that a rotating disk is made contact with a fixed slit even when an excessive force is applied to an output shaft of the motor with the encoder. | 03-11-2010 |
20110068731 | LINEAR ENCODER, LINEAR MOTOR SYSTEM, AND METHOD OF MANUFACTURING LINEAR ENCODER - An encoder includes: a main scale having two or more band-shaped tracks in each of which an optical main grating is formed so that longitudinal direction of the main scale corresponds to a measurement axis direction; and an index scale opposed to the main scale so as to form a diffraction interference optical system in cooperation with the main grating, disposed so as to be movable relative to the main scale in the measurement axis direction, and in which two or more optical index gratings are formed. A plurality of slits included in the main grating in at least one track are formed so as to be inclined at a predetermined inclination angle from a direction perpendicular to the measurement axis direction so that pitch of the slits in the track becomes equal to the pitch of the slits in the at least one other track. | 03-24-2011 |
20110069390 | ROTARY ENCODER, ROTARY MOTOR, ROTARY MOTOR SYSTEM, DISK, AND METHOD OF MANUFACTURING ROTARY ENCODER - An encoder includes a disc-shaped disk disposed so as to be rotatable about a rotation axis and having at least one ring-shaped track in which a rotating grating is formed and at least one fixed grating which is fixedly disposed opposed to the disk so that the fixed grating and the rotating grating construct a diffraction interference optical system. Each of a plurality of slits included in the at least one rotating grating is formed along a curved line obtained by making each of a plurality of radial lines using the rotation axis as a center curved in the circumferential direction at a predetermined curve degree so that a pitch of the slits can be set to a predetermined value. | 03-24-2011 |
20110298411 | ENCODER, SERVO UNIT AND ENCODER MANUFACTURING METHOD - An encoder includes a disk including a first track and a second track each being ring-shaped and provided with a rotary grating, and a first detector and a second detector that are fixedly disposed so as to respectively face the first track and the second track each provided with a fixed grating that detects diffracted interfering light. A plurality of slits of the first track are formed as curved slits. The first detector facing the first track is disposed at a position where a tangent of each of the slits included in the diffraction grating of the first track becomes parallel to a tangent of each of the slits included in the diffraction grating of the second track at a position where the second detector faces the second track. | 12-08-2011 |
20120205527 | ENCODER, OPTICAL MODULE AND SERVO SYSTEM - An encoder includes a slit array along a first measurement axis, and an optical module capable of relatively moving with respect to the slit array. The optical module comprises a point light source that irradiates the part of the slit array, and a light receiving array comprising a plurality of light receiving elements along a second measurement axis and arranged in positions offset with respect to the point light source. The light receiving elements is receiving light irradiated from the point light source and reflected from the reflection slit. The plurality of light receiving elements comprises respective shapes such that the light receiving element nearer to the point light source comprises a shorter length in a width direction and end parts on an opposite side of the light receiving element with respect to the point light source are arranged side by side in positions along the second measurement axis. | 08-16-2012 |
20120206024 | SERVO MOTOR MANUFACTURING METHOD, SERVO MOTOR MANUFACTURING APPARATUS, SERVO MOTOR, AND ENCODER - This disclosure discloses a servo motor manufacturing method, includes a disk position adjusting that adjusts a position of a rotating disk with respect to a shaft, in a case where said rotating disk to which at least one concentric pattern is formed around a disk center is to be fixed to said shaft of a motor, wherein in said disk position adjusting, said concentric pattern is used as a scale of a linear encoder to adjust an eccentricity of said rotating disk. | 08-16-2012 |
20130229138 | REFLECTION ENCODER, SERVO MOTOR, AND SERVO UNIT - Reflected light can be effectively utilized by increasing a light receiving area. Incremental light receiving element groups are separated and arranged in the circumferential direction of a rotating unit while placing a light source therebetween. First and second absolute light receiving element groups are arranged at both sides of the outside and inside of the light source in the radial direction of the rotating unit. As a result, first and second absolute light receiving elements are continuously arranged, and also the incremental light receiving element groups and the absolute light receiving element groups can be arranged to surround the periphery of the light source from four directions. | 09-05-2013 |
20140300254 | MOTOR, MOTOR SYSTEM, AND MOTOR ENCODER - A motor according to an embodiment includes a motor body, a rotating body, and a magnetic field sensor. The motor body rotates a shaft about the axis line thereof. The rotating body includes a permanent magnet and rotates along with the rotation of the shaft. The magnetic field sensor includes a magnet body having a large Barkhausen effect with the long direction thereof serving as the easy magnetization direction and is positioned to face the permanent magnet when the rotational position of the rotating body is at a given rotational position. The easy magnetization direction of the magnetic body is in a direction along a plane orthogonal to the rotation center line of the rotating body. | 10-09-2014 |
Shirou Yoshioka, Iwaki-Shi JP
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20130101363 | CUTTING INSERT AND INDEXABLE MILLING TOOL - A cutting insert is suitable for pocket machining. The cutting insert ( | 04-25-2013 |
Shirou Yoshioka, Nishinomiya-Shi JP
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20090271575 | CACHE MEMORY, SYSTEM, AND METHOD OF STORING DATA - A cache memory according to the present invention is a cache memory that has a set associative scheme and includes: a plurality of ways, each way being made up of entries, each entry holding data and a tag; a first holding unit operable to hold, for each way, a priority attribute that indicates a type of data to be preferentially stored in that way; a second holding unit which is included at least in a first way among the ways, and is operable to hold, for each entry of the first way, a data attribute that indicates a type of data held in that entry; and a control unit operable to perform replace control on the entries by prioritizing a way whose priority attribute held by the first holding unit matches a data attribute outputted from a processor, wherein when a cache miss occurs and in the case where (i) valid data is held in an entry of the first way among entries that belong to a set selected based on an address outputted from the processor, (ii) all of the following attributes match: the data attribute of the entry; the data attribute outputted from the processor; and the priority attribute of the first way, and (iii) an entry of a way other than the first way does not hold valid data, the entry being one of the entries that belong to the selected set, the control unit is further operable to store data into the entry of the way other than the first way. | 10-29-2009 |