baber/WOPTO huggingface dataset:
Patent JP-H09214462-A (JP)
Title: Orthogonal frequency division multiplex method/ synchronizing method, and modulator/demodulator for orthogonal frequency division multiplex
Inventor: SAEKI TOMONORI
IPC: H04J11/00
Filed: 1996-01-29
Abstract: PROBLEM TO BE SOLVED: To generate the reference signal of a precise phase at the time of generating the reference signal from a carrier and to reproduce the reference signal of the precise phase on a reception side even if the SN ratio of the carrier is inferior by phase-locking the reproduced reference signal with the reference signal which is FM-modulated and transmitted. SOLUTION: An AM modulation stage (step 1) has a stage (step 11) for FM-modulating the reference signal in one symbol period and a stage (step 12) for AM-modulating a digital signal in a symbol period except for the previous period. A detection stage (step 3) has a stage (step 31) for phase-locking the reproduced signal with the reference signal which is FM-modulated and transmitted. Thus, the synthesized wave signal of OFDM with the precise phase is demodulated on the reception-side without being interrupted by noise and an external signal. Synchronism can be obtained especially when the level of the carrier of OFDM is low. Furthermore, OFDM proof against impulse noise can be executed for the carrier of OFDM.
Patent JP-H03218847-A (JP)
Title: Ink jet recording device
Inventor: MIKAMI FUMIO
IPC: G01F23/00
Filed: 1990-01-25
Abstract: PURPOSE:To detect an inappropriate form of ink refill by detecting an ink amount increase in an ink storage device based on a residual ink amount detected by a residual ink detection device and a stored residual ink amount. CONSTITUTION:A voltage output in each paired electrodes of a residual ink amount sensor S1 is supplied to an ADIN terminal of CPU 50 to interprete the ink levels 1 to 5 corresponding to the height of arranged five paired electrodes. When the terminals 01 to 05 of CPU 50 reach the level of not more than 1 from a normal level of L due to the consumption of ink from a state where the ink is full, the terminal 01 is set to H and a transistor Tr1 is turned On. An electric current runs to a fuse FU1 from a power supply Vcc through a resistor R1 and fuses. The fuses become cut sequentially as ink consumption increases. If the fuses FU1, FU2 are cut and the fuses FU3 to FU5 remain uncut, a decrease in the ink amount below the level 2 is displayed, and an input to the ADIN is again checked. If the ink level is 1 or 2, it is interpreted that the ink amount has increases due to an inappropriate refilling action. Therefore, the system is stopped and a warning is sounded.
Patent JP-H02194342-A (JP)
Title: Optical spectrum analyzer
Inventor: HATORI MASAMI
IPC: G02F1/125
Filed: 1989-01-23
Abstract: PURPOSE:To analyze an extremely fine spectral width by effectively utilizing an element for performing the ordinary analysis of light spectrum and using a delay self heterodyne method or a delay self homodyne method. CONSTITUTION:A light beam L from a light source 23 is branched to two systems through optical fibers 24 and 26, a collimator lens 27 and a beam splitter 50. The light beam L passing through the beam splitter 50 is diffracted by a diffraction grating 28 for correcting wavelength fluctuation and incorporated in a light guide 12. A part of the guided light L1 is diffracted in terms of a surface acoustic wave 16 and advances as the guided light 5. However, the guided light L1 passing through the acoustic wave 16 as 0-th order light is diffracted by an acoustic and optical interaction with the surface acoustic wave 15 generated from a chirp interdigital transducer 17. The diffracted guided light L2 is diffracted through a linear diffraction grating 14 for outputting a light beam. It is because the spectrum of a beat signal is made to appear in an area distant from zero frequency that the light beam L is diffracted with the surface acoustic wave 16 to perform frequency shift in the delay self heterodyne method.
Patent JP-H06226339-A (JP)
Title: Manufacture of specially shaped bent pipe
Inventor: NAKAMURA MASANOBU
IPC: B21D26/041
Filed: 1993-01-29
Abstract: PURPOSE:To manufacture a specially shaped bent pipe having a square section and three-dimensionally bent side shape. CONSTITUTION:A round pipe material 2 is bent into a prescribed side shape, this pipe material is inserted into a bulging die 3 having a shape section of a prescribed bending shape, pressurized fluid 4 is pressed into the inner part of a round pipe material 2 for bulging, to form the bent pipe 1 having a square section shape.
Patent JP-H04238938-A (JP)
Title: Roof opening or closing device in opening-closing roof stadium
Inventor: SUDA KENICHI
IPC: E04B1/32
Filed: 1991-01-11
Abstract: PURPOSE:To change tracks and the moving direction of a roof With simple operation by simplifying the composition of the tracks. CONSTITUTION:In a roof opening-closing device in an opening-closing roof stadium, the upper section space of the stadium is shielded with an external roof 1 and an internal roof 2 Which can be respectively independently moved, and a parallel track 3 and a rotational moving track 4 for supporting the external roof 1 and the internal roof 2 are arranged on the same setting surface level, and with the operation of a change-over track 6 set at the cross point of both the tracks, the external roof 1 and the internal roof 2 are parallel-moved and rotationally moved along both the tracks 3, 4.
Patent JP-H04235578-A (JP)
Title: Developing device
Inventor: SHOJI TAKEO
IPC: G03G15/08
Filed: 1991-01-11
Abstract: PURPOSE:To provide good images at all times through processing by stabilizing the charging of a toner on a developing sleeve and the forming of thin layers, both of which are carried out by a regulating member supported on a supporting member. CONSTITUTION:The thickness t2 of the supported portion of a regulating member 3 which is supported by a supporting member 4 is larger than the thickness t1 of the abutting portion of the regulating member 3 which is made to abut on a developing sleeve 2. Since the thickness t2 of the supported portion of the regulating member is larger than the thickness t1 of the abutting portion, stress on the regulating member 3 is dispersed and thereby fluctuations of contact pressure when the regulating member 3 abuts on the developing sleeve 2 are reduced and charging of toner and formation of thin layers can both be stabilized and images of good picture quality can be stably obtained through processing.
Patent JP-S59140456-A (JP)
Title: Electrophotographic sensitive body
Inventor: GUEN CHIYAN KEE
IPC: G03G5/06
Filed: 1983-02-01
Abstract: PURPOSE:To render an electrophotographic sensitive body exposable after it is positively charged electrostatically by positive corona discharge by using a photosensitive layer contg. 3 components of a specified perylene pigment, polyvinyl carbazole, and an electron attractive dye. CONSTITUTION:The same photosensitive layer disperses or dissolves 3 components of a perylene pigment represented by formula I , and poly-N-vinyl carbazole, and an electron attractive dye represented by formula II in which X, X', X'' are each halogen; Y is -COOH or -SO3H; Z, Z' are each H, halogen, -NO2, -CN, -OR, -COR, or 0NRR'; R, R' are each 1-3C alkyl; l is 0 or an integer of 1-4; n, m are each an 0 or an integer of 1-3 satsifying n+m>=4; and p, q are each 0 or an integer of 1-2.
Patent JP-H06253173-A (JP)
Title: Device with black correcting circuit for video display system
Inventor: CHIYAARUZU MAIKERU HOWAITO
IPC: H04N9/64
Filed: 1994-02-07
Abstract: PURPOSE: To appropriately operate black correction of a video display system. CONSTITUTION: A driver 12 of a cathode ray tube 14 includes a black level correction circuit 22 for generating currents running to the output edge of the driver 12, therefore, an offset voltage(EREF) tracking in an average picture level(APL). This offset voltage is added as the components of an output voltage(EOUT), and shifted so that an output voltage can be close to black according to the increase of the APL. Thus, the non-linearity of a CRT gamma and a light diffusion effect being the cause of the loss of definition with a fine part visually sensed in an area in which the high APL image is dark can be corrected.  In a developed example, the driver 12 is constituted of cascode amplifiers Q2 and Q3, and an offset voltage generating element includes a capacitively biased resistor R8, and this is connected through the resistor R4 with the emitter of a lower (emitter ground type) transistor Q2 of the cascode amplifier.
Patent JP-S62172235-A (JP)
Title: Apparatus for detecting minute leakage
Inventor: MATSUNOBU TAKASHI
IPC: G01M3/16
Filed: 1986-01-27
Abstract: PURPOSE:To detect a leaked fluid easily, by changing electrostatic capacity by quantity corresponding to the difference between relative dielectric constants of air and the fluid when the internal fluid is leaked from machinery and the gap between capacitor electrodes is filled with said fluid. CONSTITUTION:When leakage was generated in the vicinity of the welded joint part 6 of piping 1, water leaked from the piping 1 is penetrated in a liquid permeable insulating member 11. The capacity C(F) of a capacitor constituted of a detection electrode 7, the member 11 and the piping 1 can be shown by the formula when dielectric constant is set to epsilon0, relative dielectric constant to K, the area of electrodes to S and the distance between electrodes to d. As a result, if the area S, the distance d and the dielectric constant epsilon0 are constant, the capacity of the capacitor is determined by the relative dielectric constant K of the substance filling the space between electrodes. If the substance between electrodes changes from air to water, the capacity C increase up to 80 times and the change in the capacity can be detected easily.
Patent JP-2000216381-A (JP)
Title: Field effect transistor
Inventor: HOSHI MASAKATSU
IPC: H01L29/78
Filed: 1999-01-22
Abstract: PROBLEM TO BE SOLVED: To enhance a drain breakdown voltage, simplify process, and lower channel resistance. SOLUTION: An epitaxial region 220 comprising an N-type SiC is formed on a wide-band gap semiconductor wafer 210 comprising an N+-type SiC, a channel region 230 comprising an N-type SiC and a source region 240 comprising an N+-type SiC are laminated and formed on an epitaxial region 220, a plurality of grooves 250 which reach the epitaxial region 220 are formed on a prescribed region on the main side of the epitaxial region 220, a semiconductor region 260 comprising a P-type SiC is formed on an adjacent section of the groove 250, a gate electrode 280 is formed in the groove 250 via a gate insulating film 270, a source electrode 300 is formed insulated from the gate electrode 280 by an interlayer insulating film 290, and a drain electrode 310 is formed on the backside of the wide-band gap semiconductor wafer 210.
Patent JP-H03218412-A (JP)
Title: Angle sensor
Inventor: YOMO HIDEAKI
IPC: G01C9/18
Filed: 1990-01-24
Abstract: PURPOSE:To accurately detect an inclination angle in the form of an electric signal by changing the pressure of liquid to be operated to a semiconductor pressure sensor corresponding to the inclination of a container. CONSTITUTION:A circular thin film diaphragm 11 is formed on a silicon substrate 10 and resistors R1-R4 are provided at the diaphragm 11. The resistors R1-R4 are connected to a Wheatstone bridge and a semiconductor pressure sensor 3 is constituted. The sensor 3 is fitted to a supporting substrate 2 at the almost center of the container 1 and a circular hole 9 is provided at the central part of the substrate 2 so that liquid 7 sealed in the container 1 can hit the diaphragm 11 even from a B direction as well. When the container 1 is inclined, the liquid 7 is moved and pressure to be loaded to the sensor 3 on both sides is unbalanced. Then, the diaphragm 11 is distorted and the resistance values of the resistors R2 and R3 at the central part are increased by tensile stress. Further, the resistance values of the resistors R1 and R4 at a peripheral part are reduced by compressive stress. Thus, by taking out the electric signal through terminals 5 and 6, the inclination angle of the container 1 can be detected.
Patent JP-S63183363-A (JP)
Inventor: SEKINE YOJI
IPC: F25D17/08
Filed: 1987-01-26
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-S57126808-A (JP)
Title: Production of ethylene copolymer having wide molecular weight distribution
Inventor: KAWAI SEIJI
IPC: C08F4/00
Filed: 1981-01-30
Abstract: PURPOSE: To obtain the titled copolymer having good melt flow and excellent uniformity, by slurry-polymerizing ethylene with other olefins while maintaining at least two connected reaction zones in the liquid-filled state.  
     CONSTITUTION: An ethylene copolymer, density <0.945g/cm 3 , is produced by slurry-polymerizing ethylene with other olefins by using H 2  as a MW modifier in at least two serially connected reaction zones having no vapor phase and filled with liquid. In this polymerization, the titled copolymer having good uniformity is obtained by carrying out the polymerization under pressure while continuously introducing a high-activity supported Ziegler catalyst and an organometallic compound catalyst into the first reaction zone, thereby to form high-MW polymer particles, transferring the polymer slurry into the second reaction zone and effecting the polymerization under conditions providing a hydrogen/ethylene ratio greater than that in the first reaction zone thereby to grow a polymer having a MW lower than that in the first stage and, if necessary, carrying out the third and subsequent steps of polymerization, controlling the average polymer production per solid catalyst in each stage except the final stage to below 30,000 and selecting the polymer production in each stage so as to provide a total production of 50,000 times. 
     COPYRIGHT: (C)1982,JPO&Japio
Patent JP-H01190569-A (JP)
Title: Braking force control device
Inventor: IWATA KAZURO
IPC: B60T8/30
Filed: 1988-01-25
Abstract: PURPOSE:To improve safety of a vehicle by providing a cam member turning in proportion to the vertical force applied to right and left rear wheels on a member forming a non-suspended portion of a rear suspension to control braking forces of right and left rear wheels individually through a P valve. CONSTITUTION:A stabilizer 3 which is a member forming a non-suspended portion of a rear suspension is fixed to a car body at two places of a laterally extending portion of the car body. Cam-like members 4a, 4b are fixed to two, right and left portions of the stabilizer 3. These cam-like members 4a, 4b are provided in such a manner that if there is no torsion in the stabilizer 3, the forward end portions 4c thereof are at the same height and a little upward from the horizontal state. Two, right and left road sensing proportioning valves 5a, 5b are disposed a little to the front side of the car body from the respective cam-like members 4a, 4b, and the forward ends of the operating ends 6a, 6b are disposed in such a manner as to be freely brought into sliding contact with the lower side portions of the above forward end portions 4c.
Patent JP-S60159369-A (JP)
Title: Fuel injection device of diesel engine
Inventor: YAMAUCHI HIROBUMI
IPC: F02M61/14
Filed: 1984-01-28
Abstract: PURPOSE:To device increase of the output of an engine by linearly changing the lift suppression start position of a needle valve decided by the applied pressure to a plunger member for controlling the lift of the needle valve in a fuel nozzle depending on the operating condition of the engine. CONSTITUTION:In a fuel injection nozzle 7 of an engine, high pressure fuel is introduced into a pressure fuel chamber 14 from a fuel introducing port 9 and the fuel is injected into the combustion chamber from a fuel injection port 8 by opening a needle valve opposing to a spring 17. The lift of the needle valve 16 at this time is specified by the extent of the abutment of a needle valve spring seat 16a to a plunger member 18. In the above arrangement, a fuel exhaust passage 19 is connected to a pressure passage 20 communicating to the rear end of a plunger 18b of the plunger member 18 through a communicating passage 28. A pressure control valve 21 is provided at the connecting portion of both the passages 20, 28 and the valve 21 controls the fuel pressure to apply to the plunger member 18 under a high load and high speed operation of the engine.
Patent JP-S60157434-A (JP)
Title: Double feed prevention of sheet material
Inventor: NAKANO MAKOTO
IPC: B65H7/12
Filed: 1984-01-27
Abstract: PURPOSE:To stop feeding of sheet material upon detection of sheet having different thickness by providing means for detecting the thickness of sheet material in the carrying path of sheet material. CONSTITUTION:Upon rotation of double feed detection roller 10 in the direction (c), the sheet material in upper layer is held between a pair of double feed detection rollers 9, 10 and carried further in the direction (b) to move said roller 10 upward by the distance corresponding with the thickness of sheet material. Consequently, Piezo elements 11-13 are pushed with such pressure as corresponding with the motion to produce corresponding voltage which is fed through an amplifier to a microcomputer. An input corresponding with the thickness of single sheet has been stored in the microcomputer to be compared with the input fed from Piezo electric element and if the latter is higher than the stored level, an output is produced to stop the sheet material feed roller 2 through control means and to provide a double feed display.
Patent JP-S5399267-A (JP)
Title: Method and apparatus for controlling injection molding machine
Inventor: TAKAGI MASAO
IPC: B29C45/76
Filed: 1977-02-14
Abstract: PURPOSE:To keep a uniform plasticized state of a resin and to prevent the molding defect, such as burr, by comparing the pressure in an injection cylinder with the preset value, and controlling the factors affecting the degree of plasticization.
Patent JP-S63182939-A (JP)
Title: Communication control equipment
Inventor: ABE MINORU
IPC: H04L29/06
Filed: 1987-01-26
Abstract: PURPOSE:To cope with the revision or addition of a communication control function flexibly by executing the communication function of a high-order level according to the system control program of a semi-fixed storage means and a communication control program transferred from a host device in the case of initializing. CONSTITUTION:In the initializing state, a processor 106 of a communication controller 100 sends a program transfer request to an operation controller 202 via a control line of a port 1 according to the control of a system control program of a ROM 108. A buffer control circuit 120 of the communication controller 202 stores once the program and data into a buffer 104. A processor 108 reads a communication control program from a buffer 104 according to the instruction of the system control program of the ROM 108 and stores it in a variable program storage area 302 of a RAM 110. The function having the possibility of revision or addition in the function is stored in the RAM 110 in this way.
Patent JP-S56112048-A (JP)
Title: Power source circuit for klystron
Inventor: MATSUZAKI OSAMU
IPC: H03F3/56
Filed: 1980-02-09
Abstract: PURPOSE:To obtain a power source circuit of small size and low coat by connecting a power source including ripples to a ripple removing filter circuit and peak-to-peak value holding filter circuit, and by connecting, in addition, a stabilizing circuit to the power source, in order to obtain voltages of a collector electrode, cathode electrode, and body electrode. CONSTITUTION:The input fed from an input terminal 1 is boosted with a boosting transformer 3, rectified with a rectifier 4, and branches into two filter circuits 5, 14. Ripples of the output voltage from the filter circuit 5 are reduced down to a required low level, and this output is applied between a collector electrode 8 and cathode electrode 9 as a collecotor voltage of a klystron 6. The output voltage of a peak-to- peak value holding filter circuit 14 is applied to a body electrode 7 through a voltage stabilizing circuit 13.
Patent JP-S55111331-A (JP)
Title: Ice raking-up and absorbing transportation apparatus on fishing vessel
Inventor: KAGAWA YASUHIRO
IPC: F25C5/02
Filed: 1979-02-13
Abstract: PURPOSE: To perform crushing of ice which is frozen in an ice tank and carring-out of ice from the tank onto deck easily and in high efficiency by means of mechanical force.  
     CONSTITUTION: The travelling body 6 which travels in reciprocation alng a horizontal guide rail 4 of an elevating frame 3 supports a horizontal screw-type ice raking-up apparatus 7 which extends at right angle to the rails 4 and supports the lower opened type suction hood 8 which covers the top of the ice raking-up apparatus. With the suction hood 8, an ice sucking pipe 9 having flexibility is connected at the position opposite to the ice raking end part. Accordingly, when the ice raking-up apparatus 7 is driven, the ice which is frozen in the ice tank 1 can be crushed easily by mechanical force, and the crushed ice is raked-up in the longitudinal direction of the ice raking-up apparatus 7 compulsorily, and thus ice can be sucked and transported certainly and in high efficiency by the negative pressure attraction force in the suction hood 8 and in the ice sucking pipe 9. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-H02197510-A (JP)
Title: Blast furnace operation control system
Inventor: AMANO SHIGERU
IPC: C21B5/00
Filed: 1989-01-24
Abstract: PURPOSE:To rapidly grasp the blast furnace conditions, to accurately judge the conditions and to take action by starting inference based on a knowledge engineering system even when a change in the control items of the furnace is grapsed. CONSTITUTION:The slow change in the blast furnace conditions is periodically inferred by using knowledge engineering, and the furnace is operated based on the result. A detecting means for the changes in >=1 control item is simultaneously provided as the preliminary stage for the knowledge engineering system. When the measured value for the control item is out of the control limit, inference based on the knowledge engineering system is temporarily started.
Patent JP-H03218805-A (JP)
Title: Manufacture of tile
Inventor: SHIMAO TOSHIHIRO
IPC: B28B11/22
Filed: 1990-01-24
Abstract: PURPOSE:To prevent a tile from being burnt in the deformed state because of adhering materials or from accidents in an oven generated by clogging in transfer of tiles in the oven by sliding the rear face of a molded body relatively to a cleaning tool to clean the rear face in the middle of transferring of a tile formed body. CONSTITUTION:In the tile forming process, a tile formed body 16 manufactured by the press molding of a powdery stock is sucked by a suction head 14 and transferred in the arrow mark direction together with a suction box 10 and a substrate 18. In the middle of said process, relative rear faces of a main body section 16a and a curved piece 16b of the tile formed body 16 are slided along a cleaning brush 20 and stains of stock powder particles or the like adhered on the rear face are cleaned and removed. Respective tile formed bodies 16 passing through the brush 20 are placed on a belt 26 of a conveyor device 24 and transferred to the following process. When the tile formed body 16 is placed on a burning table and burnt thereon in the following burning process, the stock powder particles are adhered to the burning table, and the tile formed body 16 can be burnt well.