baber/WOPTO huggingface dataset:
Patent JP-S63184264-A (JP)
Title: Manufacture of separator with rib
Inventor: KOSHIISHI TAMOTSU
IPC: H01M8/02
Filed: 1986-10-16
Abstract: PURPOSE:To enable a bipolar plate to be easily manufactured using a simple operation by uniformly kneading a mixture, making it a sheet attached with a one side groove, in the sheet only a thickness direction part of dually divided parts of the bipolar plate in the horizontal direction is thickened by a rolling mill, heat pressing with divided parts overlapped, and hardening a resin. CONSTITUTION:A mixture composed of a conductive material and a thermosetting resin such as a phenol resin or fran resin is made to be a clay-state by heat pressing, then the clay-state mixture is extruded to a sheet-state using an extruder etc., passed through between rolls of a rolling mill, and is made to be a sheet attached with a one-side groove. In this case, the sheet thickness is made to be thicker than that of the upper part 1 and the lower part 2 which are dually divided bipolar plate 3 finally to be manufactured in the thickness direction. And each is cut at a given dimension, plain surfaces of two sheets attached with one-side grooves are overlapped so that the grooves cross mutually and placed in a die, a resin is hardened by heat pressing, and thereby a bipolar plate 3 is made. This enables the bipolar plate 3 having conductivity and no permeability to be easily manufactured.
Patent JP-H1094190-A (JP)
Title: Charging circuit for lithium secondary battery
Inventor: YAMAGUCHI TAKASHI
IPC: H02J7/10
Filed: 1996-09-18
Abstract: PROBLEM TO BE SOLVED: To compensate for a change in charging voltage, due to the change in temperature and prevent the damage to a lithium secondary battery, due to excess voltage by inserting a temperature compensating means having nearly the same temperature characteristics as a reverse current blocking means for charging the lithium secondary battery in series with a voltage deviding means which determines the charging voltage. SOLUTION: A charging circuit 1 divides the voltage of a power supply 2 by a resistor 11, a diode 14 for compensating the temperature, and a resistor 12 and applies the divided voltage to a lithium secondary battery 3 though a reverse current blocking diode 13. The change in temperature of the charging circuit 1 caused by voltage drop due to the ambient temperature of the reverse current blocking diode 13 and generation of heat by the circuit itself is compensated, assuming that the temperature characteristics of the diode 14 for compensating for temperature are the identical to those of the blocking diode 13. By this method, the fluctuation in charging voltage V3 due to the change in temperature can be eliminated.
Patent JP-2000072991-A (JP)
Title: Ink composition and ink jet recording method
Inventor: MIYABAYASHI TOSHIYUKI
IPC: C09D11/00
Filed: 1998-08-31
Abstract: PROBLEM TO BE SOLVED: To obtain an ink compsn. which can improve scratch resistance, water resistance, and setting density of print images by incorporating a pigment, water, a water-soluble org. solvent, and fine polymer particles comprising at least two polymers different in refractive index and capable of forming a film into the same. SOLUTION: At least two vinyl monomers different in refractive index so that the difference in refractive index between a polymer which forms cores and a polymer which forms shells is 0.01-0.5 are subjected to multistage emulsion polymn. to give fine polymer particles comprising at least two polymers different in refractive index, capable of forming a film, and having particle sizes of 1-200 μm. 0.5-25 wt.%, esp. 2-15 wt.%, pigment having a particle size of 10 μm or lower, 10-40 wt.%, esp. 10-20 wt.%, water-soluble org. solvent boiling at 180 deg.C of higher, 1-10 wt.%, esp. 1-5 wt.%, fine polymer particles, water, and optionally a glycol ether and at least one surfactant selected from among anionic, nonionic, and amphoteric surfactants are compounded.
Patent JP-H0991157-A (JP)
Title: Task-device driver communication control method
Inventor: MOCHIDA MUNEAKI
IPC: G06F9/46
Filed: 1995-09-25
Abstract: PROBLEM TO BE SOLVED: To surely perform communication between the plural tasks of the equal priority and a device driver at high speed. SOLUTION: The 1st task investigates the state of a 2nd task occupation flag 2 by turning on a 1st task occupation flag 1 and when the 2nd task occupation flag 2 is turned on, control authority is applied to the other task by turning off the 1st task occupation flag. When the 2nd task occupation flag is turned off, the 1st task writes data in a data table and updates a task write pointer. When all the data are completely written in the data table, the 1st task occupation flag 1 is turned off, and the control authority of its own central processing unit is abandoned. A DSP driver reads data from a transmission data table until the contents of the write pointer get equal with the contents of a read pointer.
Patent JP-H03108884-A (JP)
Title: Ccd image pickup device
Inventor: HOJO JUNICHI
IPC: H04N5/341
Filed: 1989-09-21
Abstract: PURPOSE:To simplify the constitution and to prevent mixture of an undesired charge by selecting 4 bus lines for supplying a transfer clock to an effective bit part of a horizontal register and 2 lines for 1st and 2nd dummy bit parts. CONSTITUTION:Four bus lines 4a1, 4b1, 5a1, 5b1 supplying transfer clocks phi1, phi2 are provided to an effective bit part 2a of a horizontal register 2. The transfer clocks phi1, phi2 are selected and supplied to the said 4 bus lines to transfer switchingly a signal charge in both directions of an erected image output section 3 and a mirror image output section 6. Moreover, a 1st dummy bit section 2b has only to transfer the signal charge to the erected image output section 3 and a 2nd dummy bit section 2c has only to transfer the signal charge to the mirror image output section 6, then the two but lines are enough to supply the transfer clocks. Thus, the circuit pattern is simplified and the reverse charge transfer to the parts 2b, 2c does not exist, then the mixture of the undesired charge from an output section not in use is prevented.
Patent JP-H03113799-A (JP)
Title: Optical storage device
Inventor: TAKARAGAWA KOJI
IPC: G02F3/02
Filed: 1989-09-25
Abstract: PURPOSE:To increase storage capacity by executing write by installing a reflection medium in the wave guide of an accumulation area according to contents, and executing read by taking autocorrelation with a signal reflected by the medium, and pulse-compressing it. CONSTITUTION:At the time of the write, the reflection media R1... are installed at the address positions of the wave guide 2 correspondingly to information 0,1, and no medium is installed for the information 0. At the time of the read, the code sequence of (011) is issued from an encoder A, and optical pulse generators S1,S2 issue the pulses of lambda1, lambda2 in response to 0,1. At that time, a autocorrelation waveform is taken by switching a SW group into positive and negative bias voltages respectively according to the code sequence. An incident pulse train is changed in its propagation path by a directional coupler C, and is filtered by filters F1,F2, and as the result, the reflected signal of R1 becomes F1,F2. These pass through delay lines T1, T2 with taps, and output waveforms T1,T2 are obtained through detectors D11 to D23, and are synthesized by an output terminal O, and the signal corresponding to the autocorrelation waveform can be obtained, and resolution is raised, and the storage capacity is increased.
Patent JP-H0696617-A (JP)
Title: Heat radiating sheet
Inventor: NAGAHAMA KATSUYASU
IPC: H01L23/373
Filed: 1992-09-16
Abstract: PURPOSE:To provide a heat radiating sheet excellent in electrically insulating property and thermal conductivity, where silicone rubber sheets can be prevented from being stuck to each other, by making boron nitride powder exist on the sheet filled with electrically insulative and thermally conductive inorganic powder. CONSTITUTION:100 parts by weight of silicone rubber sheet is filled with 30-500 parts by weight of electrically insulative and thermally conductive inorganic powder such as BN, followed by molding into a predetermined shape. Boron nitride powder having an average particle diameter of about 50mum or less, preferably 10mum or less exists on the sheet preferably about 0.1-1.0g/m<2> by an electrostatic applying method, a spray applying method, or the like.
Patent JP-H0293595-A (JP)
Title: Buzzer driving circuit
Inventor: SHITANDA KOJI
IPC: G10K9/12
Filed: 1988-09-30
Abstract: PURPOSE:To vary the sound volume of a piezoelectric buzzer with a single power source by driving the piezoelectric buzzer with the output obtained by gating a pulse signal selected among plural pulse signals which have frequencies higher than a frequency nearly equal to the resonance frequency of the piezoelectric buzzer and differ in duty by using a pulse signal of frequency nearly equal to the resonance frequency. CONSTITUTION:Pulse generating circuits 23-25 generate the pulse signals PA, PB, and PC which have frequencies higher than the resonance frequency of the piezoelectric buzzer 31 and differ in duty according to a basic clock and a pulse selecting circuit 26 selects the pulse signals PA, PB, and PC according to a control signal from a microcomputer 27. Then the selected pulse signal P is gated by an AND circuit 28 with the pulse signal P outputted by a pulse generating circuit. Consequently, the amplitude of a component having a frequency close to the resonance frequency can be varied with the duty of the pulse signal, to the sound volume of the piezoelectric buzzer can be varied with the single power source.
Patent JP-H04127914-A (JP)
Title: Detecting device for amount of displacement and controller for direction of displacement at tip part of mandrel bar for manufacturing hot extruded tube
Inventor: USHIJIMA EIJI
IPC: B21C25/04
Filed: 1990-09-17
Abstract: PURPOSE:To prevent ununiform thickness of a tube and bad surface property from generation by detecting an amount of displacement at the tip of a mandrel, deciding whether it does not reach a tolerance and always controlling the direction of the tip of the mandrel bar to a fixed direction. CONSTITUTION:The apparent amount of displacement from a shaft center is detected by a detector 1 for the amount of displacement at the tip part of the mandrel bar. A signal for the amount of displacement from the detector 1 for the amount of displacement at the tip part of the mandrel bar is cpmpared by a means 5 for deciding conformity of the amount of displacement at the tip part of the mandrel bar with a peset allowable amount of displacement to decide the conformity of the amount of displacement. When the amount of displacement does not exceed the allowable value, the maximum displacement direction at the tip part of the mandrel bar is controlled by a means 6 for controlling the maximum displacement direction at the tip part of the mandrel bar so that it is fixed by signals from the decision means 5 and a signal in this case. In this way, the bent state at the tip part of the mandrel bar can be grasped and the bent direction can be controlled to be fixed.
Patent JP-H0564150-A (JP)
Title: Dropout detection circuit
Inventor: TAKASE YUTAKA
IPC: H03L7/00
Filed: 1991-08-30
Abstract: PURPOSE:To eliminate the effect due to fluctuation in a time base by taking a difference between a frequency of a reproduction signal and a frequency of a signal synchronously with a time base error signal, applying waveform shaping to the obtained signal and processing the signal to be a pulse train so as to detect a dropout. CONSTITUTION:An output signal P(t) of a PLL circuit 1 and a video signal S(t) are multiplied by a multiplier 2 to obtain a sum component and a difference component of two signal frequencies. A signal S(t)XP(t) LPF resulting from eliminating the sum component at an LPF 3 from the signal S(t)XP(t), the signal is given to a waveform shaping circuit 4, and a dropout is detected by a monostable multivibrator(MMV) 5 by using the synchronization of the signal subject to pulse train processing at the circuit 4. Then a time difference between a dropout detection signal and a reproduction video signal is corrected by a delay circuit (DELAY) 6, the result is inputted to a dropout correction circuit, and its output is used for a correction signal. The detection accuracy of the dropout detected in this way is set depending on the content of recording information and the detection accuracy is enhanced without the need of taking a time base fluctuation component into account.
Patent JP-2001070935-A (JP)
Title: Method and device for water treatment using photocatalyst
Inventor: KUBOTA NOBUHIKO
IPC: C02F1/32
Filed: 1999-08-31
Abstract: PROBLEM TO BE SOLVED: To decrease treating time for oxidative degradation and increase the treatment volume of raw water, in a water treatment method where organic substances in the raw water is oxidatively degraded by a photocatalyst, by circulating mixed water, obtained by mixing the raw water with granular photocatalyst, in an oxidative degradation tank, and radiating the exciting light of the photocatalyst to the mixed water. SOLUTION: In an oxidative degradation tank 1, mixed water X is prepayed by mixing waste water, which is supplied from an inflow port 1a and contains various organic substances U, with granular photocatalysts P to be stored. An air supply device 2 supplies compressed air of a prescribed pressure to a gas jetting port 1c of the oxidative degradation tank 1 to forcibly circulate the mixed water X. At this time, the mixed water X is divided into a center zone Kt and an outer circumferential zone Kg by a partition wall 3, and is revolved by revolving plates 4. A plurality of ultraviolet lamps are arranged in the zones Kt, Kg respectively to irradiate the mixed water X, containing the organic substances U and the granular hotocatalysts P, with ultraviolet rays.  Thereby the photocatalyst P causes photoexcitation, so that the organic substances U contacting well with the photocatalyst P is oxidatively degraded efficiently.
Patent JP-H03108704-A (JP)
Title: Manufacture of oxide superconducting coil
Inventor: UNO NAOKI
IPC: H01F6/06
Filed: 1989-09-22
Abstract: PURPOSE:To conduct large current and to obtain a high central magnetic field by using a tape-shaped oxide superconductive wire material wherein an oxide superconductive material layer is covered with a metal layer for a power feeding lead and a coil conductor, and performing the connection between the current feeding lead and the coil conductor by bonding the oxide superconductor material layers in a respective inner layer. CONSTITUTION:A power feeding layer 3 is arranged on a core 4 in parallel with the width direction of the core 4. An end 6 of each coil conductor 5 comprising oxide superconductive material is connected to the specified position of the power feeding lead 3. Then, the coil conductor 5 is wound on the core 4, and a coil molded body is obtained. Then, the coil molded body is heat-treated, and a pancake-shaped oxide superconductive coil is manufactured. At this time, a tape-shaped oxide superconductive wire material wherein an oxide superconductive material layer 2 is covered with a metal layer 1 is used for the power feeding lead 3 and the coil conductor 5. The connection between the power feeding lead 3 and the coil conductor 5 is performed as follows. The metal layer 1 of each wire material is removed. The oxide superconductive materials 2 in the exposed inner layers are bonded together. The metal layer 1 around the bonded part is welded and tightly sealed. Heat treatment is performed by heating the material to a temperature higher than the temperature where the oxide superconductive material is partially welded.
Patent JP-H06101310-A (JP)
Title: Clay tile-roofing structure of dropping verge part of roof
Inventor: ISHINO YOSHIHIDE
IPC: E04D1/30
Filed: 1992-09-16
Abstract: PURPOSE:To enable the clay tile-roofing of the drooping verge part of a roof to be easily and finely carried out without requiring high-degree technique and skill, and also to maintain a tile-roofed condition excellent in stability and durability. CONSTITUTION:In a concrete roof, tile-placing steps 4a, 4b, 4c forming stairs in the direction of the inclination of the sheathing are formed with mortar or the like, on the sheathing 1a of the drooping verge part (a) that is sloped toward the direction of the end thereof. On each of the tile-placing steps 4a 4b, 4c, tile-receiving seats 5 formed in a block shape of a required length are fixedly arranged so as to be opposite to each other on both sides of the step along the longitudinal direction, and flat tiles 10 are placed on these seats 5 for carrying out the tile-roofing of the drooping verge part (a). The tile- receiving seat 5 is formed in a block shape of an approximately trapezoidal shape in section, and a recessed groove is formed on the undersurface thereof, continuously in the longitudinal direction.
Patent JP-S62107501-A (JP)
Title: Corrugated horn
Inventor: ABE AKIRA
IPC: H01P1/211
Filed: 1985-11-02
Abstract: PURPOSE:To obtain a required frequency region by adopting the structure that the bottom of each corrugated slot is formed stepwise in the axial direction of the horn or tilted in a converse way in the axial direction of the horn so as not too adopt the ring loading but to adopt various shapes to the slot bottom. CONSTITUTION:The bottom 71 of the slot 81 is processed stepwise, that is, the depth of each step is different. The depth of the shallower tread at the 1st flight is D1, the width of the flight is B1, and the depth of the 2nd flight is D2 and the width is B2. In selecting the dimensions D1, D2, B1, B2, T, H properly, the admittance frequency characteristic is changed and it is possible to widen or shift the frequency region at which the excellent radiation performance is obtained. When the bottom of the corrugated slot is formed with three flights or over, or even when the tread between flights is not in parallel with each other, or the bottom of the corrugated slit is tapered, the similar effect is obtained. Even when the shape of the corrugate is optional, for example, a ring is loaded at the inlet of the slot, the operating frequency band is changed.
Patent JP-H03108904-A (JP)
Title: Digital waveform generation circuit
Inventor: KODAIRA YUICHI
IPC: H03B28/00
Filed: 1989-09-22
Abstract: PURPOSE:To obtain the digital waveform generation circuit in which a clock noise when the same level is generated successively is reduced by generating a DAC control clock when change occurs in digital data read out from a mem ory, and converting the digital data to an analog signal. CONSTITUTION:When data is registered on the memory 2, one bit Dg is allocat ed to the presence/absence of the change of the content of the data, and 0 is registered when no change occurs in the data, and 1 when it occurs. When no change occurs in memory data even when an address changes, Dg shows 0, and a gate 6 is closed, and no DAC control clock is generated. When the address changes from phi2 to phi3. Dg shows 21 if the memory data changes from DATA1 to DATA2, and the gate 6a is opened, then, the DAC control clock is generated. A D/A converter 3 receives the DAC control clock, and performs the D/A conversion of the DATA2. Thereby, it is possible to realize the digital waveform generation circuit in which no clock noise when the same level is generated successively occurs.
Patent JP-H04125527-A (JP)
Title: Infrared image pickup device
Inventor: DOI SHOJI
IPC: G03B11/04
Filed: 1990-09-17
Abstract: PURPOSE:To offer the infrared image pickup device which improves suppression effect to light made incident on an image pickup element except from a lens by providing a cylinder body where plural shield plates with opening windows are fixedly arranged and a light absorber is internally applied. CONSTITUTION:After shield plate constitution parts 15a, 16a, 17a, and 18a fixed to a cylinder constitution part 11a by spot welding, a blackening process for applying the light absorber in a cylinder constitution part 11a and to the shield plate constitution parts 15a, 16a, 17a, and 18a is carried out and a blackening process for a cylinder constitution part 11b is carried out similarly. Then the cylinder constitution parts 11a and 11b are connected by spot welding to form the cylinder body 11. Consequently, light which is made incident as shown by solid lines II and III except from the lens is reflected many times by the blackened internal peripheral surface of the cylinder body 11 and shield plates 15 - 18 and the majority (about 99%) of the light is absorbed by the light absorber when reflected once, so almost no light reaches the photodetection surface 10a of the image pickup element 10. Consequently, the image signal outputted by the image pickup element 10 is prevented from varying in level.
Patent JP-H1176194-A (JP)
Title: Rf probe for magnetic resonance imaging
Inventor: TAKAHASHI TETSUHIKO
IPC: G01R33/32
Filed: 1997-09-11
Abstract: PROBLEM TO BE SOLVED: To provide an RF probe for MRI, with which the part of a subject near its surface can be examined with high sensitivity and a wide area can be examined. SOLUTION: An RF probe includes: an approximately cylindrical multiple RF coil 405 in which a plurality of RF coils (elements 101-108) receiving magnetic resonance signals are arranged in the circumferential direction of a rough cylinder; a signal combining circuit (phase shifter 803 and signal adder 805) in which the signals received from the elements 101-108 are made in pairs and transmitted to a signal processing system 407, with each of the pairs of signals added together as they are deviated from each other by a predetermined phase; a selection means (signal bypass 811) for selecting the signals from a part of the elements 101-108 among the signals received by all the elements 101-108 and for transmitting the signals to the signal processing system;  and connection means (switches 802, 806) for connecting the output of either the signal combining circuit or the selection means to the signal processing system 407. Therefore, one RF probe can deal with two measurement modes, and, for example, can examine both sides of the brain simultaneously and examine the part of the brain near the surface with high sensitivity.
Patent JP-H1075586-A (JP)
Title: Dead-time compensator for synchronous pwm
Inventor: TANAKA MASATSUGU
IPC: H02P27/08
Filed: 1996-08-29
Abstract: PROBLEM TO BE SOLVED: To minimize the discrepancy between a dead-time and a dead-time compensation and suppress the hunting of an output current and a torque fluctuation by a method in which the excessive time or the deficit time of one pulse of PWM is calculated from the increased/decreased value of the sudden change of an output voltage in the pulse change at the time of acceleration/deceleration of an inverter. SOLUTION: The respective phase voltages before and after the pulse change at the time of acceleration/deceleration of an inverter are inputted to an A/D converter 9 by voltage detectors 8, the output of the A/D converter 9 is inputted to a CPU 1 which calculates its effective value and the effective value is stored in a memory 4. A jump voltage is calculated from the voltage effective value and a dead-time compensation value is increased/decreased in accordance with the direction of the jump voltage to determine the dead-time compensation value. The determined dead-time compensation value is stored in the memory 4.  The output of a phase calculation circuit 2 and the output of an output voltage calculation circuit 3 are compensated with the dead-time compensation value stored in the memory 4 and then are inputted to a PWM calculation circuit 5 which outputs commands for the respective phases to switching devices 6.